Vendor import of clang release_34 branch r197841 (effectively, 3.4 RC3):vendor/clang/clang-release_34-r197841

https://llvm.org/svn/llvm-project/cfe/branches/release_34@197841

267 files changed, 16426 insertions, 6835 deletions

diff --git a/include/clang/ARCMigrate/ARCMT.h b/include/clang/ARCMigrate/ARCMT.h
index c167d3c3192b..196f6c0b731f 100644
--- a/include/clang/ARCMigrate/ARCMT.h
+++ b/include/clang/ARCMigrate/ARCMT.h
@@ -97,6 +97,8 @@ class MigrationProcess {
   FileRemapper Remapper;
 
 public:
+  bool HadARCErrors;
+
   MigrationProcess(const CompilerInvocation &CI, DiagnosticConsumer *diagClient,
                    StringRef outputDir = StringRef());
 
diff --git a/include/clang/ARCMigrate/ARCMTActions.h b/include/clang/ARCMigrate/ARCMTActions.h
index 2daaf73065c2..45c8b4ed1a39 100644
--- a/include/clang/ARCMigrate/ARCMTActions.h
+++ b/include/clang/ARCMigrate/ARCMTActions.h
@@ -57,14 +57,12 @@ public:
 /// \brief Migrates to modern ObjC syntax.
 class ObjCMigrateAction : public WrapperFrontendAction {
   std::string MigrateDir;
-  bool MigrateLiterals;
-  bool MigrateSubscripting;
+  unsigned    ObjCMigAction;
   FileRemapper Remapper;
   CompilerInstance *CompInst;
 public:
   ObjCMigrateAction(FrontendAction *WrappedAction, StringRef migrateDir,
-                    bool migrateLiterals,
-                    bool migrateSubscripting);
+                    unsigned migrateAction);
 
 protected:
   virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,StringRef InFile);
diff --git a/include/clang/ARCMigrate/FileRemapper.h b/include/clang/ARCMigrate/FileRemapper.h
index 94c9e8f31acb..f7677cc8620a 100644
--- a/include/clang/ARCMigrate/FileRemapper.h
+++ b/include/clang/ARCMigrate/FileRemapper.h
@@ -53,7 +53,6 @@ public:
                          StringRef outputDir = StringRef());
 
   void remap(StringRef filePath, llvm::MemoryBuffer *memBuf);
-  void remap(StringRef filePath, StringRef newPath);
 
   void applyMappings(PreprocessorOptions &PPOpts) const;
 
diff --git a/include/clang/AST/APValue.h b/include/clang/AST/APValue.h
index ec8faa4e3524..b4fd2affa653 100644
--- a/include/clang/AST/APValue.h
+++ b/include/clang/AST/APValue.h
@@ -168,6 +168,13 @@ public:
     MakeUninit();
   }
 
+  /// \brief Returns whether the object performed allocations.
+  ///
+  /// If APValues are constructed via placement new, \c needsCleanup()
+  /// indicates whether the destructor must be called in order to correctly
+  /// free all allocated memory.
+  bool needsCleanup() const;
+
   /// \brief Swaps the contents of this and the given APValue.
   void swap(APValue &RHS);
 
diff --git a/include/clang/AST/ASTConsumer.h b/include/clang/AST/ASTConsumer.h
index ae779436a9da..7b6fa94b2043 100644
--- a/include/clang/AST/ASTConsumer.h
+++ b/include/clang/AST/ASTConsumer.h
@@ -14,6 +14,8 @@
 #ifndef LLVM_CLANG_AST_ASTCONSUMER_H
 #define LLVM_CLANG_AST_ASTCONSUMER_H
 
+#include "llvm/ADT/StringRef.h"
+
 namespace clang {
   class ASTContext;
   class CXXRecordDecl;
@@ -70,6 +72,10 @@ public:
   /// can be defined in declspecs).
   virtual void HandleTagDeclDefinition(TagDecl *D) {}
 
+  /// \brief This callback is invoked the first time each TagDecl is required to
+  /// be complete.
+  virtual void HandleTagDeclRequiredDefinition(const TagDecl *D) {}
+
   /// \brief Invoked when a function is implicitly instantiated.
   /// Note that at this point point it does not have a body, its body is
   /// instantiated at the end of the translation unit and passed to
@@ -86,6 +92,21 @@ public:
   /// The default implementation passes it to HandleTopLevelDecl.
   virtual void HandleImplicitImportDecl(ImportDecl *D);
 
+  /// \brief Handle a pragma that appends to Linker Options.  Currently this
+  /// only exists to support Microsoft's #pragma comment(linker, "/foo").
+  virtual void HandleLinkerOptionPragma(llvm::StringRef Opts) {}
+
+  /// \brief Handle a pragma that emits a mismatch identifier and value to the
+  /// object file for the linker to work with.  Currently, this only exists to
+  /// support Microsoft's #pragma detect_mismatch.
+  virtual void HandleDetectMismatch(llvm::StringRef Name,
+                                    llvm::StringRef Value) {}
+
+  /// \brief Handle a dependent library created by a pragma in the source.
+  /// Currently this only exists to support Microsoft's
+  /// #pragma comment(lib, "/foo").
+  virtual void HandleDependentLibrary(llvm::StringRef Lib) {}
+
   /// CompleteTentativeDefinition - Callback invoked at the end of a translation
   /// unit to notify the consumer that the given tentative definition should be
   /// completed.
diff --git a/include/clang/AST/ASTContext.h b/include/clang/AST/ASTContext.h
index c5d3337fd22d..f420e85ee146 100644
--- a/include/clang/AST/ASTContext.h
+++ b/include/clang/AST/ASTContext.h
@@ -19,11 +19,9 @@
 #include "clang/AST/CanonicalType.h"
 #include "clang/AST/CommentCommandTraits.h"
 #include "clang/AST/Decl.h"
-#include "clang/AST/LambdaMangleContext.h"
 #include "clang/AST/NestedNameSpecifier.h"
 #include "clang/AST/PrettyPrinter.h"
 #include "clang/AST/RawCommentList.h"
-#include "clang/AST/RecursiveASTVisitor.h"
 #include "clang/AST/TemplateName.h"
 #include "clang/AST/Type.h"
 #include "clang/Basic/AddressSpaces.h"
@@ -47,6 +45,7 @@ namespace llvm {
 
 namespace clang {
   class FileManager;
+  class AtomicExpr;
   class ASTRecordLayout;
   class BlockExpr;
   class CharUnits;
@@ -55,9 +54,11 @@ namespace clang {
   class ExternalASTSource;
   class ASTMutationListener;
   class IdentifierTable;
+  class MaterializeTemporaryExpr;
   class SelectorTable;
   class TargetInfo;
   class CXXABI;
+  class MangleNumberingContext;
   // Decls
   class MangleContext;
   class ObjCIvarDecl;
@@ -81,6 +82,7 @@ class ASTContext : public RefCountedBase<ASTContext> {
   mutable llvm::FoldingSet<ExtQuals> ExtQualNodes;
   mutable llvm::FoldingSet<ComplexType> ComplexTypes;
   mutable llvm::FoldingSet<PointerType> PointerTypes;
+  mutable llvm::FoldingSet<DecayedType> DecayedTypes;
   mutable llvm::FoldingSet<BlockPointerType> BlockPointerTypes;
   mutable llvm::FoldingSet<LValueReferenceType> LValueReferenceTypes;
   mutable llvm::FoldingSet<RValueReferenceType> RValueReferenceTypes;
@@ -146,7 +148,7 @@ class ASTContext : public RefCountedBase<ASTContext> {
   mutable TypeInfoMap MemoizedTypeInfo;
 
   /// \brief A cache mapping from CXXRecordDecls to key functions.
-  llvm::DenseMap<const CXXRecordDecl*, const CXXMethodDecl*> KeyFunctions;
+  llvm::DenseMap<const CXXRecordDecl*, LazyDeclPtr> KeyFunctions;
   
   /// \brief Mapping from ObjCContainers to their ObjCImplementations.
   llvm::DenseMap<ObjCContainerDecl*, ObjCImplDecl*> ObjCImpls;
@@ -163,6 +165,11 @@ class ASTContext : public RefCountedBase<ASTContext> {
   llvm::DenseMap<const FunctionDecl*, FunctionDecl*>
     ClassScopeSpecializationPattern;
 
+  /// \brief Mapping from materialized temporaries with static storage duration
+  /// that appear in constant initializers to their evaluated values.
+  llvm::DenseMap<const MaterializeTemporaryExpr*, APValue>
+    MaterializedTemporaryValues;
+
   /// \brief Representation of a "canonical" template template parameter that
   /// is used in canonical template names.
   class CanonicalTemplateTemplateParm : public llvm::FoldingSetNode {
@@ -190,6 +197,9 @@ class ASTContext : public RefCountedBase<ASTContext> {
 
   /// \brief The typedef for the __uint128_t type.
   mutable TypedefDecl *UInt128Decl;
+
+  /// \brief The typedef for the __float128 stub type.
+  mutable TypeDecl *Float128StubDecl;
   
   /// \brief The typedef for the target specific predefined
   /// __builtin_va_list type.
@@ -261,13 +271,30 @@ class ASTContext : public RefCountedBase<ASTContext> {
   /// wasting space in the Decl class.
   llvm::DenseMap<const Decl*, AttrVec*> DeclAttrs;
 
-  /// \brief Keeps track of the static data member templates from which
-  /// static data members of class template specializations were instantiated.
+  /// \brief A mapping from non-redeclarable declarations in modules that were
+  /// merged with other declarations to the canonical declaration that they were
+  /// merged into.
+  llvm::DenseMap<Decl*, Decl*> MergedDecls;
+
+public:
+  /// \brief A type synonym for the TemplateOrInstantiation mapping.
+  typedef llvm::PointerUnion<VarTemplateDecl *, MemberSpecializationInfo *>
+  TemplateOrSpecializationInfo;
+
+private:
+
+  /// \brief A mapping to contain the template or declaration that
+  /// a variable declaration describes or was instantiated from,
+  /// respectively.
   ///
-  /// This data structure stores the mapping from instantiations of static
-  /// data members to the static data member representations within the
-  /// class template from which they were instantiated along with the kind
-  /// of instantiation or specialization (a TemplateSpecializationKind - 1).
+  /// For non-templates, this value will be NULL. For variable
+  /// declarations that describe a variable template, this will be a
+  /// pointer to a VarTemplateDecl. For static data members
+  /// of class template specializations, this will be the
+  /// MemberSpecializationInfo referring to the member variable that was
+  /// instantiated or specialized. Thus, the mapping will keep track of
+  /// the static data member templates from which static data members of
+  /// class template specializations were instantiated.
   ///
   /// Given the following example:
   ///
@@ -286,8 +313,8 @@ class ASTContext : public RefCountedBase<ASTContext> {
   /// This mapping will contain an entry that maps from the VarDecl for
   /// X<int>::value to the corresponding VarDecl for X<T>::value (within the
   /// class template X) and will be marked TSK_ImplicitInstantiation.
-  llvm::DenseMap<const VarDecl *, MemberSpecializationInfo *> 
-    InstantiatedFromStaticDataMember;
+  llvm::DenseMap<const VarDecl *, TemplateOrSpecializationInfo>
+  TemplateOrInstantiation;
 
   /// \brief Keeps track of the declaration from which a UsingDecl was
   /// created during instantiation.
@@ -328,12 +355,15 @@ class ASTContext : public RefCountedBase<ASTContext> {
   typedef llvm::TinyPtrVector<const CXXMethodDecl*> CXXMethodVector;
   llvm::DenseMap<const CXXMethodDecl *, CXXMethodVector> OverriddenMethods;
 
-  /// \brief Mapping from each declaration context to its corresponding lambda 
-  /// mangling context.
-  llvm::DenseMap<const DeclContext *, LambdaMangleContext> LambdaMangleContexts;
+  /// \brief Mapping from each declaration context to its corresponding
+  /// mangling numbering context (used for constructs like lambdas which
+  /// need to be consistently numbered for the mangler).
+  llvm::DenseMap<const DeclContext *, MangleNumberingContext *>
+      MangleNumberingContexts;
 
-  llvm::DenseMap<const DeclContext *, unsigned> UnnamedMangleContexts;
-  llvm::DenseMap<const TagDecl *, unsigned> UnnamedMangleNumbers;
+  /// \brief Side-table of mangling numbers for declarations which rarely
+  /// need them (like static local vars).
+  llvm::DenseMap<const NamedDecl *, unsigned> MangleNumbers;
 
   /// \brief Mapping that stores parameterIndex values for ParmVarDecls when
   /// that value exceeds the bitfield size of ParmVarDeclBits.ParameterIndex.
@@ -368,6 +398,10 @@ class ASTContext : public RefCountedBase<ASTContext> {
   /// \brief The logical -> physical address space map.
   const LangAS::Map *AddrSpaceMap;
 
+  /// \brief Address space map mangling must be used with language specific 
+  /// address spaces (e.g. OpenCL/CUDA)
+  bool AddrSpaceMapMangling;
+
   friend class ASTDeclReader;
   friend class ASTReader;
   friend class ASTWriter;
@@ -419,22 +453,7 @@ public:
     return getParents(ast_type_traits::DynTypedNode::create(Node));
   }
 
-  ParentVector getParents(const ast_type_traits::DynTypedNode &Node) {
-    assert(Node.getMemoizationData() &&
-           "Invariant broken: only nodes that support memoization may be "
-           "used in the parent map.");
-    if (!AllParents) {
-      // We always need to run over the whole translation unit, as
-      // hasAncestor can escape any subtree.
-      AllParents.reset(
-          ParentMapASTVisitor::buildMap(*getTranslationUnitDecl()));
-    }
-    ParentMap::const_iterator I = AllParents->find(Node.getMemoizationData());
-    if (I == AllParents->end()) {
-      return ParentVector();
-    }
-    return I->second;
-  }
+  ParentVector getParents(const ast_type_traits::DynTypedNode &Node);
 
   const clang::PrintingPolicy &getPrintingPolicy() const {
     return PrintingPolicy;
@@ -451,7 +470,7 @@ public:
     return BumpAlloc;
   }
 
-  void *Allocate(unsigned Size, unsigned Align = 8) const {
+  void *Allocate(size_t Size, unsigned Align = 8) const {
     return BumpAlloc.Allocate(Size, Align);
   }
   void Deallocate(void *Ptr) const { }
@@ -470,6 +489,19 @@ public:
 
   const TargetInfo &getTargetInfo() const { return *Target; }
   
+  /// getIntTypeForBitwidth -
+  /// sets integer QualTy according to specified details:
+  /// bitwidth, signed/unsigned.
+  /// Returns empty type if there is no appropriate target types.
+  QualType getIntTypeForBitwidth(unsigned DestWidth,
+                                 unsigned Signed) const;
+  /// getRealTypeForBitwidth -
+  /// sets floating point QualTy according to specified bitwidth.
+  /// Returns empty type if there is no appropriate target types.
+  QualType getRealTypeForBitwidth(unsigned DestWidth) const;
+
+  bool AtomicUsesUnsupportedLibcall(const AtomicExpr *E) const;
+  
   const LangOptions& getLangOpts() const { return LangOpts; }
 
   DiagnosticsEngine &getDiagnostics() const;
@@ -580,7 +612,12 @@ public:
   /// preprocessor is not available.
   comments::FullComment *getCommentForDecl(const Decl *D,
                                            const Preprocessor *PP) const;
-  
+
+  /// Return parsed documentation comment attached to a given declaration.
+  /// Returns NULL if no comment is attached. Does not look at any
+  /// redeclarations of the declaration.
+  comments::FullComment *getLocalCommentForDeclUncached(const Decl *D) const;
+
   comments::FullComment *cloneFullComment(comments::FullComment *FC,
                                          const Decl *D) const;
 
@@ -601,9 +638,13 @@ public:
   /// \brief If this variable is an instantiated static data member of a
   /// class template specialization, returns the templated static data member
   /// from which it was instantiated.
+  // FIXME: Remove ?
   MemberSpecializationInfo *getInstantiatedFromStaticDataMember(
                                                            const VarDecl *Var);
 
+  TemplateOrSpecializationInfo
+  getTemplateOrSpecializationInfo(const VarDecl *Var);
+
   FunctionDecl *getClassScopeSpecializationPattern(const FunctionDecl *FD);
 
   void setClassScopeSpecializationPattern(FunctionDecl *FD,
@@ -615,6 +656,9 @@ public:
                                            TemplateSpecializationKind TSK,
                         SourceLocation PointOfInstantiation = SourceLocation());
 
+  void setTemplateOrSpecializationInfo(VarDecl *Inst,
+                                       TemplateOrSpecializationInfo TSI);
+
   /// \brief If the given using decl \p Inst is an instantiation of a
   /// (possibly unresolved) using decl from a template instantiation,
   /// return it.
@@ -632,31 +676,6 @@ public:
 
   void setInstantiatedFromUnnamedFieldDecl(FieldDecl *Inst, FieldDecl *Tmpl);
   
-  /// \brief Return \c true if \p FD is a zero-length bitfield which follows
-  /// the non-bitfield \p LastFD.
-  bool ZeroBitfieldFollowsNonBitfield(const FieldDecl *FD, 
-                                      const FieldDecl *LastFD) const;
-
-  /// \brief Return \c true if \p FD is a zero-length bitfield which follows
-  /// the bitfield \p LastFD.
-  bool ZeroBitfieldFollowsBitfield(const FieldDecl *FD,
-                                   const FieldDecl *LastFD) const;
-  
-  /// \brief Return \c true if \p FD is a bitfield which follows the bitfield
-  /// \p LastFD.
-  bool BitfieldFollowsBitfield(const FieldDecl *FD,
-                               const FieldDecl *LastFD) const;
-  
-  /// \brief Return \c true if \p FD is not a bitfield which follows the
-  /// bitfield \p LastFD.
-  bool NonBitfieldFollowsBitfield(const FieldDecl *FD,
-                                  const FieldDecl *LastFD) const;
-  
-  /// \brief Return \c true if \p FD is a bitfield which follows the
-  /// non-bitfield \p LastFD.
-  bool BitfieldFollowsNonBitfield(const FieldDecl *FD,
-                                  const FieldDecl *LastFD) const;
-
   // Access to the set of methods overridden by the given C++ method.
   typedef CXXMethodVector::const_iterator overridden_cxx_method_iterator;
   overridden_cxx_method_iterator
@@ -732,7 +751,15 @@ public:
     return import_iterator(FirstLocalImport); 
   }
   import_iterator local_import_end() const { return import_iterator(); }
-  
+
+  Decl *getPrimaryMergedDecl(Decl *D) {
+    Decl *Result = MergedDecls.lookup(D);
+    return Result ? Result : D;
+  }
+  void setPrimaryMergedDecl(Decl *D, Decl *Primary) {
+    MergedDecls[D] = Primary;
+  }
+
   TranslationUnitDecl *getTranslationUnitDecl() const { return TUDecl; }
 
 
@@ -740,7 +767,8 @@ public:
   CanQualType VoidTy;
   CanQualType BoolTy;
   CanQualType CharTy;
-  CanQualType WCharTy;  // [C++ 3.9.1p5], integer type in C99.
+  CanQualType WCharTy;  // [C++ 3.9.1p5].
+  CanQualType WideCharTy; // Same as WCharTy in C++, integer type in C99.
   CanQualType WIntTy;   // [C99 7.24.1], integer type unchanged by default promotions.
   CanQualType Char16Ty; // [C++0x 3.9.1p5], integer type in C99.
   CanQualType Char32Ty; // [C++0x 3.9.1p5], integer type in C99.
@@ -809,6 +837,9 @@ public:
 
   /// \brief Retrieve the declaration for the 128-bit unsigned integer type.
   TypedefDecl *getUInt128Decl() const;
+
+  /// \brief Retrieve the declaration for a 128-bit float stub type.
+  TypeDecl *getFloat128StubType() const;
   
   //===--------------------------------------------------------------------===//
   //                           Type Constructors
@@ -884,6 +915,14 @@ public:
     return CanQualType::CreateUnsafe(getPointerType((QualType) T));
   }
 
+  /// \brief Return the uniqued reference to the decayed version of the given
+  /// type.  Can only be called on array and function types which decay to
+  /// pointer types.
+  QualType getDecayedType(QualType T) const;
+  CanQualType getDecayedType(CanQualType T) const {
+    return CanQualType::CreateUnsafe(getDecayedType((QualType) T));
+  }
+
   /// \brief Return the uniqued reference to the atomic type for the specified
   /// type.
   QualType getAtomicType(QualType T) const;
@@ -1104,7 +1143,7 @@ public:
 
   /// \brief C++11 deduced auto type.
   QualType getAutoType(QualType DeducedType, bool IsDecltypeAuto,
-                       bool IsDependent = false) const;
+                       bool IsDependent) const;
 
   /// \brief C++11 deduction pattern for 'auto' type.
   QualType getAutoDeductType() const;
@@ -1130,11 +1169,15 @@ public:
   /// <stdint.h>.
   CanQualType getUIntMaxType() const;
 
-  /// \brief In C++, this returns the unique wchar_t type.  In C99, this
-  /// returns a type compatible with the type defined in <stddef.h> as defined
-  /// by the target.
+  /// \brief Return the unique wchar_t type available in C++ (and available as
+  /// __wchar_t as a Microsoft extension).
   QualType getWCharType() const { return WCharTy; }
 
+  /// \brief Return the type of wide characters. In C++, this returns the
+  /// unique wchar_t type. In C99, this returns a type compatible with the type
+  /// defined in <stddef.h> as defined by the target.
+  QualType getWideCharType() const { return WideCharTy; }
+
   /// \brief Return the type of "signed wchar_t".
   ///
   /// Used when in C++, as a GCC extension.
@@ -1607,14 +1650,17 @@ public:
   /// \pre \p D must not be a bitfield type, as bitfields do not have a valid
   /// alignment.
   ///
-  /// If \p RefAsPointee, references are treated like their underlying type
-  /// (for alignof), else they're treated like pointers (for CodeGen).
-  CharUnits getDeclAlign(const Decl *D, bool RefAsPointee = false) const;
+  /// If \p ForAlignof, references are treated like their underlying type
+  /// and  large arrays don't get any special treatment. If not \p ForAlignof
+  /// it computes the value expected by CodeGen: references are treated like
+  /// pointers and large arrays get extra alignment.
+  CharUnits getDeclAlign(const Decl *D, bool ForAlignof = false) const;
 
   /// \brief Get or compute information about the layout of the specified
   /// record (struct/union/class) \p D, which indicates its size and field
   /// position information.
   const ASTRecordLayout &getASTRecordLayout(const RecordDecl *D) const;
+  const ASTRecordLayout *BuildMicrosoftASTRecordLayout(const RecordDecl *D) const;
 
   /// \brief Get or compute information about the layout of the specified
   /// Objective-C interface.
@@ -1721,6 +1767,9 @@ public:
            getCanonicalType(T2).getTypePtr();
   }
 
+  bool ObjCMethodsAreEqual(const ObjCMethodDecl *MethodDecl,
+                           const ObjCMethodDecl *MethodImp);
+  
   bool UnwrapSimilarPointerTypes(QualType &T1, QualType &T2);
   
   /// \brief Retrieves the "canonical" nested name specifier for a
@@ -1749,19 +1798,9 @@ public:
   NestedNameSpecifier *
   getCanonicalNestedNameSpecifier(NestedNameSpecifier *NNS) const;
 
-  /// \brief Retrieves the default calling convention to use for
-  /// C++ instance methods.
-  CallingConv getDefaultCXXMethodCallConv(bool isVariadic);
-
-  /// \brief Retrieves the canonical representation of the given
-  /// calling convention.
-  CallingConv getCanonicalCallConv(CallingConv CC) const;
-
-  /// \brief Determines whether two calling conventions name the same
-  /// calling convention.
-  bool isSameCallConv(CallingConv lcc, CallingConv rcc) {
-    return (getCanonicalCallConv(lcc) == getCanonicalCallConv(rcc));
-  }
+  /// \brief Retrieves the default calling convention for the current target.
+  CallingConv getDefaultCallingConvention(bool isVariadic,
+                                          bool IsCXXMethod) const;
 
   /// \brief Retrieves the "canonical" template name that refers to a
   /// given template.
@@ -1899,6 +1938,12 @@ public:
       return (*AddrSpaceMap)[AS - LangAS::Offset];
   }
 
+  bool addressSpaceMapManglingFor(unsigned AS) const {
+    return AddrSpaceMapMangling || 
+           AS < LangAS::Offset || 
+           AS >= LangAS::Offset + LangAS::Count;
+  }
+
 private:
   // Helper for integer ordering
   unsigned getIntegerRank(const Type *T) const;
@@ -1925,7 +1970,6 @@ public:
   bool isObjCSelType(QualType T) const {
     return T == getObjCSelType();
   }
-  bool QualifiedIdConformsQualifiedId(QualType LHS, QualType RHS);
   bool ObjCQualifiedIdTypesAreCompatible(QualType LHS, QualType RHS,
                                          bool ForCompare);
 
@@ -2092,12 +2136,15 @@ public:
   /// it is not used.
   bool DeclMustBeEmitted(const Decl *D);
 
-  void addUnnamedTag(const TagDecl *Tag);
-  int getUnnamedTagManglingNumber(const TagDecl *Tag) const;
+  void setManglingNumber(const NamedDecl *ND, unsigned Number);
+  unsigned getManglingNumber(const NamedDecl *ND) const;
+
+  /// \brief Retrieve the context for computing mangling numbers in the given
+  /// DeclContext.
+  MangleNumberingContext &getManglingNumberContext(const DeclContext *DC);
+
+  MangleNumberingContext *createMangleNumberingContext() const;
 
-  /// \brief Retrieve the lambda mangling number for a lambda expression.
-  unsigned getLambdaManglingNumber(CXXMethodDecl *CallOperator);
-  
   /// \brief Used by ParmVarDecl to store on the side the
   /// index of the parameter when it exceeds the size of the normal bitfield.
   void setParameterIndex(const ParmVarDecl *D, unsigned index);
@@ -2105,7 +2152,12 @@ public:
   /// \brief Used by ParmVarDecl to retrieve on the side the
   /// index of the parameter when it exceeds the size of the normal bitfield.
   unsigned getParameterIndex(const ParmVarDecl *D) const;
-  
+
+  /// \brief Get the storage for the constant value of a materialized temporary
+  /// of static storage duration.
+  APValue *getMaterializedTemporaryValue(const MaterializeTemporaryExpr *E,
+                                         bool MayCreate);
+
   //===--------------------------------------------------------------------===//
   //                    Statistics
   //===--------------------------------------------------------------------===//
@@ -2197,93 +2249,21 @@ private:
                 const ObjCImplementationDecl *Impl) const;
 
 private:
-  /// \brief A set of deallocations that should be performed when the 
+  /// \brief A set of deallocations that should be performed when the
   /// ASTContext is destroyed.
-  SmallVector<std::pair<void (*)(void*), void *>, 16> Deallocations;
-                                       
+  typedef llvm::SmallDenseMap<void(*)(void*), llvm::SmallVector<void*, 16> >
+    DeallocationMap;
+  DeallocationMap Deallocations;
+
   // FIXME: This currently contains the set of StoredDeclMaps used
   // by DeclContext objects.  This probably should not be in ASTContext,
   // but we include it here so that ASTContext can quickly deallocate them.
   llvm::PointerIntPair<StoredDeclsMap*,1> LastSDM;
 
-  /// \brief A counter used to uniquely identify "blocks".
-  mutable unsigned int UniqueBlockByRefTypeID;
-  
   friend class DeclContext;
   friend class DeclarationNameTable;
   void ReleaseDeclContextMaps();
 
-  /// \brief A \c RecursiveASTVisitor that builds a map from nodes to their
-  /// parents as defined by the \c RecursiveASTVisitor.
-  ///
-  /// Note that the relationship described here is purely in terms of AST
-  /// traversal - there are other relationships (for example declaration context)
-  /// in the AST that are better modeled by special matchers.
-  ///
-  /// FIXME: Currently only builds up the map using \c Stmt and \c Decl nodes.
-  class ParentMapASTVisitor : public RecursiveASTVisitor<ParentMapASTVisitor> {
-  public:
-    /// \brief Builds and returns the translation unit's parent map.
-    ///
-    ///  The caller takes ownership of the returned \c ParentMap.
-    static ParentMap *buildMap(TranslationUnitDecl &TU) {
-      ParentMapASTVisitor Visitor(new ParentMap);
-      Visitor.TraverseDecl(&TU);
-      return Visitor.Parents;
-    }
-
-  private:
-    typedef RecursiveASTVisitor<ParentMapASTVisitor> VisitorBase;
-
-    ParentMapASTVisitor(ParentMap *Parents) : Parents(Parents) {
-    }
-
-    bool shouldVisitTemplateInstantiations() const {
-      return true;
-    }
-    bool shouldVisitImplicitCode() const {
-      return true;
-    }
-    // Disables data recursion. We intercept Traverse* methods in the RAV, which
-    // are not triggered during data recursion.
-    bool shouldUseDataRecursionFor(clang::Stmt *S) const {
-      return false;
-    }
-
-    template <typename T>
-    bool TraverseNode(T *Node, bool(VisitorBase:: *traverse) (T *)) {
-      if (Node == NULL)
-        return true;
-      if (ParentStack.size() > 0)
-        // FIXME: Currently we add the same parent multiple times, for example
-        // when we visit all subexpressions of template instantiations; this is
-        // suboptimal, bug benign: the only way to visit those is with
-        // hasAncestor / hasParent, and those do not create new matches.
-        // The plan is to enable DynTypedNode to be storable in a map or hash
-        // map. The main problem there is to implement hash functions /
-        // comparison operators for all types that DynTypedNode supports that
-        // do not have pointer identity.
-        (*Parents)[Node].push_back(ParentStack.back());
-      ParentStack.push_back(ast_type_traits::DynTypedNode::create(*Node));
-      bool Result = (this ->* traverse) (Node);
-      ParentStack.pop_back();
-      return Result;
-    }
-
-    bool TraverseDecl(Decl *DeclNode) {
-      return TraverseNode(DeclNode, &VisitorBase::TraverseDecl);
-    }
-
-    bool TraverseStmt(Stmt *StmtNode) {
-      return TraverseNode(StmtNode, &VisitorBase::TraverseStmt);
-    }
-
-    ParentMap *Parents;
-    llvm::SmallVector<ast_type_traits::DynTypedNode, 16> ParentStack;
-
-    friend class RecursiveASTVisitor<ParentMapASTVisitor>;
-  };
-
   llvm::OwningPtr<ParentMap> AllParents;
 };
 
diff --git a/include/clang/AST/ASTDiagnostic.h b/include/clang/AST/ASTDiagnostic.h
index 64e955ea1472..1635511984dc 100644
--- a/include/clang/AST/ASTDiagnostic.h
+++ b/include/clang/AST/ASTDiagnostic.h
@@ -16,7 +16,7 @@ namespace clang {
   namespace diag {
     enum {
 #define DIAG(ENUM,FLAGS,DEFAULT_MAPPING,DESC,GROUP,\
-             SFINAE,ACCESS,NOWERROR,SHOWINSYSHEADER,CATEGORY) ENUM,
+             SFINAE,NOWERROR,SHOWINSYSHEADER,CATEGORY) ENUM,
 #define ASTSTART
 #include "clang/Basic/DiagnosticASTKinds.inc"
 #undef DIAG
diff --git a/include/clang/AST/ASTFwd.h b/include/clang/AST/ASTFwd.h
new file mode 100644
index 000000000000..4f3279874b16
--- /dev/null
+++ b/include/clang/AST/ASTFwd.h
@@ -0,0 +1,28 @@
+//===--- ASTFwd.h ----------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===--------------------------------------------------------------===//
+///
+/// \file
+/// \brief Forward declaration of all AST node types.
+///
+//===-------------------------------------------------------------===//
+
+namespace clang {
+
+class Decl;
+#define DECL(DERIVED, BASE) class DERIVED##Decl;
+#include "clang/AST/DeclNodes.inc"
+class Stmt;
+#define STMT(DERIVED, BASE) class DERIVED;
+#include "clang/AST/StmtNodes.inc"
+class Type;
+#define TYPE(DERIVED, BASE) class DERIVED##Type;
+#include "clang/AST/TypeNodes.def"
+class CXXCtorInitializer;
+
+} // end namespace clang
diff --git a/include/clang/AST/ASTImporter.h b/include/clang/AST/ASTImporter.h
index 1672ab22a3de..b74c8ee1bf47 100644
--- a/include/clang/AST/ASTImporter.h
+++ b/include/clang/AST/ASTImporter.h
@@ -271,6 +271,14 @@ namespace clang {
     /// Subclasses can override this function to observe all of the \c From ->
     /// \c To declaration mappings as they are imported.
     virtual Decl *Imported(Decl *From, Decl *To);
+      
+    /// \brief Called by StructuralEquivalenceContext.  If a RecordDecl is
+    /// being compared to another RecordDecl as part of import, completing the
+    /// other RecordDecl may trigger importation of the first RecordDecl. This
+    /// happens especially for anonymous structs.  If the original of the second
+    /// RecordDecl can be found, we can complete it without the need for
+    /// importation, eliminating this loop.
+    virtual Decl *GetOriginalDecl(Decl *To) { return NULL; }
     
     /// \brief Determine whether the given types are structurally
     /// equivalent.
diff --git a/include/clang/AST/ASTLambda.h b/include/clang/AST/ASTLambda.h
new file mode 100644
index 000000000000..358ac7131e40
--- /dev/null
+++ b/include/clang/AST/ASTLambda.h
@@ -0,0 +1,80 @@
+//===--- ASTLambda.h - Lambda Helper Functions --------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// \brief This file provides some common utility functions for processing
+/// Lambda related AST Constructs.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_AST_LAMBDA_H
+#define LLVM_CLANG_AST_LAMBDA_H
+
+#include "clang/AST/DeclCXX.h"
+#include "clang/AST/DeclTemplate.h"
+
+namespace clang {
+inline StringRef getLambdaStaticInvokerName() {
+  return "__invoke";
+}
+// This function returns true if M is a specialization, a template,
+// or a non-generic lambda call operator.
+inline bool isLambdaCallOperator(const CXXMethodDecl *MD) {
+  const CXXRecordDecl *LambdaClass = MD->getParent();
+  if (!LambdaClass || !LambdaClass->isLambda()) return false;
+  return MD->getOverloadedOperator() == OO_Call;
+}
+
+inline bool isLambdaCallOperator(const DeclContext *DC) {
+  if (!DC || !isa<CXXMethodDecl>(DC)) return false;
+  return isLambdaCallOperator(cast<CXXMethodDecl>(DC));
+}
+
+inline bool isGenericLambdaCallOperatorSpecialization(CXXMethodDecl *MD) {
+  if (!MD) return false;
+  CXXRecordDecl *LambdaClass = MD->getParent();
+  if (LambdaClass && LambdaClass->isGenericLambda())
+    return isLambdaCallOperator(MD) && 
+                    MD->isFunctionTemplateSpecialization();
+  return false;
+}
+
+inline bool isLambdaConversionOperator(CXXConversionDecl *C) {
+  return C ? C->getParent()->isLambda() : false;
+}
+
+inline bool isLambdaConversionOperator(Decl *D) {
+  if (!D) return false;
+  if (CXXConversionDecl *Conv = dyn_cast<CXXConversionDecl>(D)) 
+    return isLambdaConversionOperator(Conv);  
+  if (FunctionTemplateDecl *F = dyn_cast<FunctionTemplateDecl>(D)) 
+    if (CXXConversionDecl *Conv = 
+        dyn_cast_or_null<CXXConversionDecl>(F->getTemplatedDecl())) 
+      return isLambdaConversionOperator(Conv);
+  return false;
+}
+
+inline bool isGenericLambdaCallOperatorSpecialization(DeclContext *DC) {
+  return isGenericLambdaCallOperatorSpecialization(
+                                          dyn_cast<CXXMethodDecl>(DC));
+}
+
+
+// This returns the parent DeclContext ensuring that the correct
+// parent DeclContext is returned for Lambdas
+inline DeclContext *getLambdaAwareParentOfDeclContext(DeclContext *DC) {
+  if (isLambdaCallOperator(DC))
+    return DC->getParent()->getParent();
+  else 
+    return DC->getParent();
+}
+
+} // clang
+
+#endif // LLVM_CLANG_AST_LAMBDA_H
diff --git a/include/clang/AST/ASTMutationListener.h b/include/clang/AST/ASTMutationListener.h
index 6b70285e3ad8..6d12a92c61bf 100644
--- a/include/clang/AST/ASTMutationListener.h
+++ b/include/clang/AST/ASTMutationListener.h
@@ -27,8 +27,11 @@ namespace clang {
   class ObjCContainerDecl;
   class ObjCInterfaceDecl;
   class ObjCPropertyDecl;
+  class QualType;
   class TagDecl;
   class VarDecl;
+  class VarTemplateDecl;
+  class VarTemplateSpecializationDecl;
 
 /// \brief An abstract interface that should be implemented by listeners
 /// that want to be notified when an AST entity gets modified after its
@@ -53,9 +56,18 @@ public:
 
   /// \brief A template specialization (or partial one) was added to the
   /// template declaration.
+  virtual void
+  AddedCXXTemplateSpecialization(const VarTemplateDecl *TD,
+                                 const VarTemplateSpecializationDecl *D) {}
+
+  /// \brief A template specialization (or partial one) was added to the
+  /// template declaration.
   virtual void AddedCXXTemplateSpecialization(const FunctionTemplateDecl *TD,
                                               const FunctionDecl *D) {}
 
+  /// \brief A function's return type has been deduced.
+  virtual void DeducedReturnType(const FunctionDecl *FD, QualType ReturnType);
+
   /// \brief An implicit member got a definition.
   virtual void CompletedImplicitDefinition(const FunctionDecl *D) {}
 
@@ -78,6 +90,11 @@ public:
                                             const ObjCPropertyDecl *OrigProp,
                                             const ObjCCategoryDecl *ClassExt) {}
 
+  /// \brief A declaration is marked used which was not previously marked used.
+  ///
+  /// \param D the declaration marked used
+  virtual void DeclarationMarkedUsed(const Decl *D) {}
+
   // NOTE: If new methods are added they should also be added to
   // MultiplexASTMutationListener.
 };
diff --git a/include/clang/AST/ASTTypeTraits.h b/include/clang/AST/ASTTypeTraits.h
index 4688b12de701..087ad5609001 100644
--- a/include/clang/AST/ASTTypeTraits.h
+++ b/include/clang/AST/ASTTypeTraits.h
@@ -7,22 +7,132 @@
 //
 //===----------------------------------------------------------------------===//
 //
-//  Provides a dynamically typed node container that can be used to store
-//  an AST base node at runtime in the same storage in a type safe way.
+//  Provides a dynamic type identifier and a dynamically typed node container
+//  that can be used to store an AST base node at runtime in the same storage in
+//  a type safe way.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_CLANG_AST_AST_TYPE_TRAITS_H
 #define LLVM_CLANG_AST_AST_TYPE_TRAITS_H
 
+#include "clang/AST/ASTFwd.h"
 #include "clang/AST/Decl.h"
+#include "clang/AST/NestedNameSpecifier.h"
 #include "clang/AST/Stmt.h"
+#include "clang/AST/TemplateBase.h"
 #include "clang/AST/TypeLoc.h"
+#include "clang/Basic/LLVM.h"
 #include "llvm/Support/AlignOf.h"
 
+namespace llvm {
+
+class raw_ostream;
+
+}
+
 namespace clang {
+
+struct PrintingPolicy;
+
 namespace ast_type_traits {
 
+/// \brief Kind identifier.
+///
+/// It can be constructed from any node kind and allows for runtime type
+/// hierarchy checks.
+/// Use getFromNodeKind<T>() to construct them.
+class ASTNodeKind {
+public:
+  /// \brief Empty identifier. It matches nothing.
+  ASTNodeKind() : KindId(NKI_None) {}
+
+  /// \brief Construct an identifier for T.
+  template <class T>
+  static ASTNodeKind getFromNodeKind() {
+    return ASTNodeKind(KindToKindId<T>::Id);
+  }
+
+  /// \brief Returns \c true if \c this and \c Other represent the same kind.
+  bool isSame(ASTNodeKind Other) const;
+
+  /// \brief Returns \c true if \c this is a base kind of (or same as) \c Other.
+  bool isBaseOf(ASTNodeKind Other) const;
+
+  /// \brief String representation of the kind.
+  StringRef asStringRef() const;
+
+private:
+  /// \brief Kind ids.
+  ///
+  /// Includes all possible base and derived kinds.
+  enum NodeKindId {
+    NKI_None,
+    NKI_CXXCtorInitializer,
+    NKI_TemplateArgument,
+    NKI_NestedNameSpecifier,
+    NKI_NestedNameSpecifierLoc,
+    NKI_QualType,
+    NKI_TypeLoc,
+    NKI_Decl,
+#define DECL(DERIVED, BASE) NKI_##DERIVED##Decl,
+#include "clang/AST/DeclNodes.inc"
+    NKI_Stmt,
+#define STMT(DERIVED, BASE) NKI_##DERIVED,
+#include "clang/AST/StmtNodes.inc"
+    NKI_Type,
+#define TYPE(DERIVED, BASE) NKI_##DERIVED##Type,
+#include "clang/AST/TypeNodes.def"
+    NKI_NumberOfKinds
+  };
+
+  /// \brief Use getFromNodeKind<T>() to construct the kind.
+  ASTNodeKind(NodeKindId KindId) : KindId(KindId) {}
+
+  /// \brief Returns \c true if \c Base is a base kind of (or same as) \c
+  ///   Derived.
+  static bool isBaseOf(NodeKindId Base, NodeKindId Derived);
+
+  /// \brief Helper meta-function to convert a kind T to its enum value.
+  ///
+  /// This struct is specialized below for all known kinds.
+  template <class T> struct KindToKindId {
+    static const NodeKindId Id = NKI_None;
+  };
+
+  /// \brief Per kind info.
+  struct KindInfo {
+    /// \brief The id of the parent kind, or None if it has no parent.
+    NodeKindId ParentId;
+    /// \brief Name of the kind.
+    const char *Name;
+  };
+  static const KindInfo AllKindInfo[NKI_NumberOfKinds];
+
+  NodeKindId KindId;
+};
+
+#define KIND_TO_KIND_ID(Class)                                                 \
+  template <> struct ASTNodeKind::KindToKindId<Class> {                        \
+    static const NodeKindId Id = NKI_##Class;                                  \
+  };
+KIND_TO_KIND_ID(CXXCtorInitializer)
+KIND_TO_KIND_ID(TemplateArgument)
+KIND_TO_KIND_ID(NestedNameSpecifier)
+KIND_TO_KIND_ID(NestedNameSpecifierLoc)
+KIND_TO_KIND_ID(QualType)
+KIND_TO_KIND_ID(TypeLoc)
+KIND_TO_KIND_ID(Decl)
+KIND_TO_KIND_ID(Stmt)
+KIND_TO_KIND_ID(Type)
+#define DECL(DERIVED, BASE) KIND_TO_KIND_ID(DERIVED##Decl)
+#include "clang/AST/DeclNodes.inc"
+#define STMT(DERIVED, BASE) KIND_TO_KIND_ID(DERIVED)
+#include "clang/AST/StmtNodes.inc"
+#define TYPE(DERIVED, BASE) KIND_TO_KIND_ID(DERIVED##Type)
+#include "clang/AST/TypeNodes.def"
+#undef KIND_TO_KIND_ID
+
 /// \brief A dynamically typed AST node container.
 ///
 /// Stores an AST node in a type safe way. This allows writing code that
@@ -32,7 +142,7 @@ namespace ast_type_traits {
 /// Use \c create(Node) to create a \c DynTypedNode from an AST node,
 /// and \c get<T>() to retrieve the node as type T if the types match.
 ///
-/// See \c NodeTypeTag for which node base types are currently supported;
+/// See \c ASTNodeKind for which node base types are currently supported;
 /// You can create DynTypedNodes for all nodes in the inheritance hierarchy of
 /// the supported base types.
 class DynTypedNode {
@@ -49,15 +159,15 @@ public:
   /// convertible to \c T.
   ///
   /// For types that have identity via their pointer in the AST
-  /// (like \c Stmt and \c Decl) the returned pointer points to the
-  /// referenced AST node.
+  /// (like \c Stmt, \c Decl, \c Type and \c NestedNameSpecifier) the returned
+  /// pointer points to the referenced AST node.
   /// For other types (like \c QualType) the value is stored directly
   /// in the \c DynTypedNode, and the returned pointer points at
   /// the storage inside DynTypedNode. For those nodes, do not
   /// use the pointer outside the scope of the DynTypedNode.
   template <typename T>
   const T *get() const {
-    return BaseConverter<T>::get(Tag, Storage.buffer);
+    return BaseConverter<T>::get(NodeKind, Storage.buffer);
   }
 
   /// \brief Returns a pointer that identifies the stored AST node.
@@ -67,142 +177,171 @@ public:
   /// method returns NULL.
   const void *getMemoizationData() const;
 
+  /// \brief Prints the node to the given output stream.
+  void print(llvm::raw_ostream &OS, const PrintingPolicy &PP) const;
+
+  /// \brief Dumps the node to the given output stream.
+  void dump(llvm::raw_ostream &OS, SourceManager &SM) const;
+
+  /// \brief For nodes which represent textual entities in the source code,
+  /// return their SourceRange.  For all other nodes, return SourceRange().
+  SourceRange getSourceRange() const;
+
+  /// @{
+  /// \brief Imposes an order on \c DynTypedNode.
+  ///
+  /// Supports comparison of nodes that support memoization.
+  /// FIXME: Implement comparsion for other node types (currently
+  /// only Stmt, Decl, Type and NestedNameSpecifier return memoization data).
+  bool operator<(const DynTypedNode &Other) const {
+    assert(getMemoizationData() && Other.getMemoizationData());
+    return getMemoizationData() < Other.getMemoizationData();
+  }
+  bool operator==(const DynTypedNode &Other) const {
+    // Nodes with different types cannot be equal.
+    if (!NodeKind.isSame(Other.NodeKind))
+      return false;
+
+    // FIXME: Implement for other types.
+    if (ASTNodeKind::getFromNodeKind<QualType>().isBaseOf(NodeKind)) {
+      return *get<QualType>() == *Other.get<QualType>();
+    }
+    assert(getMemoizationData() && Other.getMemoizationData());
+    return getMemoizationData() == Other.getMemoizationData();
+  }
+  bool operator!=(const DynTypedNode &Other) const {
+    return !operator==(Other);
+  }
+  /// @}
+
 private:
   /// \brief Takes care of converting from and to \c T.
   template <typename T, typename EnablerT = void> struct BaseConverter;
 
-  /// \brief Supported base node types.
-  enum NodeTypeTag {
-    NT_Decl,
-    NT_Stmt,
-    NT_NestedNameSpecifier,
-    NT_NestedNameSpecifierLoc,
-    NT_QualType,
-    NT_Type,
-    NT_TypeLoc
-  } Tag;
+  /// \brief Converter that uses dyn_cast<T> from a stored BaseT*.
+  template <typename T, typename BaseT> struct DynCastPtrConverter {
+    static const T *get(ASTNodeKind NodeKind, const char Storage[]) {
+      if (ASTNodeKind::getFromNodeKind<BaseT>().isBaseOf(NodeKind))
+        return dyn_cast<T>(*reinterpret_cast<BaseT *const *>(Storage));
+      return NULL;
+    }
+    static DynTypedNode create(const BaseT &Node) {
+      DynTypedNode Result;
+      Result.NodeKind = ASTNodeKind::getFromNodeKind<T>();
+      new (Result.Storage.buffer) const BaseT * (&Node);
+      return Result;
+    }
+  };
+
+  /// \brief Converter that stores T* (by pointer).
+  template <typename T> struct PtrConverter {
+    static const T *get(ASTNodeKind NodeKind, const char Storage[]) {
+      if (ASTNodeKind::getFromNodeKind<T>().isSame(NodeKind))
+        return *reinterpret_cast<T *const *>(Storage);
+      return NULL;
+    }
+    static DynTypedNode create(const T &Node) {
+      DynTypedNode Result;
+      Result.NodeKind = ASTNodeKind::getFromNodeKind<T>();
+      new (Result.Storage.buffer) const T * (&Node);
+      return Result;
+    }
+  };
+
+  /// \brief Converter that stores T (by value).
+  template <typename T> struct ValueConverter {
+    static const T *get(ASTNodeKind NodeKind, const char Storage[]) {
+      if (ASTNodeKind::getFromNodeKind<T>().isSame(NodeKind))
+        return reinterpret_cast<const T *>(Storage);
+      return NULL;
+    }
+    static DynTypedNode create(const T &Node) {
+      DynTypedNode Result;
+      Result.NodeKind = ASTNodeKind::getFromNodeKind<T>();
+      new (Result.Storage.buffer) T(Node);
+      return Result;
+    }
+  };
+
+  ASTNodeKind NodeKind;
 
   /// \brief Stores the data of the node.
   ///
-  /// Note that we can store \c Decls and \c Stmts by pointer as they are
-  /// guaranteed to be unique pointers pointing to dedicated storage in the
-  /// AST. \c QualTypes on the other hand do not have storage or unique
+  /// Note that we can store \c Decls, \c Stmts, \c Types,
+  /// \c NestedNameSpecifiers and \c CXXCtorInitializer by pointer as they are
+  /// guaranteed to be unique pointers pointing to dedicated storage in the AST.
+  /// \c QualTypes, \c NestedNameSpecifierLocs, \c TypeLocs and
+  /// \c TemplateArguments on the other hand do not have storage or unique
   /// pointers and thus need to be stored by value.
-  llvm::AlignedCharArrayUnion<Decl *, Stmt *, NestedNameSpecifier,
-                              NestedNameSpecifierLoc, QualType, Type,
-                              TypeLoc> Storage;
+  typedef llvm::AlignedCharArrayUnion<
+      Decl *, Stmt *, Type *, NestedNameSpecifier *, CXXCtorInitializer *>
+      KindsByPointer;
+  llvm::AlignedCharArrayUnion<KindsByPointer, TemplateArgument,
+                              NestedNameSpecifierLoc, QualType, TypeLoc>
+      Storage;
 };
 
-// FIXME: Pull out abstraction for the following.
-template<typename T> struct DynTypedNode::BaseConverter<T,
-    typename llvm::enable_if<llvm::is_base_of<Decl, T> >::type> {
-  static const T *get(NodeTypeTag Tag, const char Storage[]) {
-    if (Tag == NT_Decl)
-      return dyn_cast<T>(*reinterpret_cast<Decl*const*>(Storage));
-    return NULL;
-  }
-  static DynTypedNode create(const Decl &Node) {
-    DynTypedNode Result;
-    Result.Tag = NT_Decl;
-    new (Result.Storage.buffer) const Decl*(&Node);
-    return Result;
-  }
-};
-template<typename T> struct DynTypedNode::BaseConverter<T,
-    typename llvm::enable_if<llvm::is_base_of<Stmt, T> >::type> {
-  static const T *get(NodeTypeTag Tag, const char Storage[]) {
-    if (Tag == NT_Stmt)
-      return dyn_cast<T>(*reinterpret_cast<Stmt*const*>(Storage));
-    return NULL;
-  }
-  static DynTypedNode create(const Stmt &Node) {
-    DynTypedNode Result;
-    Result.Tag = NT_Stmt;
-    new (Result.Storage.buffer) const Stmt*(&Node);
-    return Result;
-  }
-};
-template<typename T> struct DynTypedNode::BaseConverter<T,
-    typename llvm::enable_if<llvm::is_base_of<Type, T> >::type> {
-  static const T *get(NodeTypeTag Tag, const char Storage[]) {
-    if (Tag == NT_Type)
-      return dyn_cast<T>(*reinterpret_cast<Type*const*>(Storage));
-    return NULL;
-  }
-  static DynTypedNode create(const Type &Node) {
-    DynTypedNode Result;
-    Result.Tag = NT_Type;
-    new (Result.Storage.buffer) const Type*(&Node);
-    return Result;
-  }
-};
-template<> struct DynTypedNode::BaseConverter<NestedNameSpecifier, void> {
-  static const NestedNameSpecifier *get(NodeTypeTag Tag, const char Storage[]) {
-    if (Tag == NT_NestedNameSpecifier)
-      return *reinterpret_cast<NestedNameSpecifier*const*>(Storage);
-    return NULL;
-  }
-  static DynTypedNode create(const NestedNameSpecifier &Node) {
-    DynTypedNode Result;
-    Result.Tag = NT_NestedNameSpecifier;
-    new (Result.Storage.buffer) const NestedNameSpecifier*(&Node);
-    return Result;
-  }
-};
-template<> struct DynTypedNode::BaseConverter<NestedNameSpecifierLoc, void> {
-  static const NestedNameSpecifierLoc *get(NodeTypeTag Tag,
-                                           const char Storage[]) {
-    if (Tag == NT_NestedNameSpecifierLoc)
-      return reinterpret_cast<const NestedNameSpecifierLoc*>(Storage);
-    return NULL;
-  }
-  static DynTypedNode create(const NestedNameSpecifierLoc &Node) {
-    DynTypedNode Result;
-    Result.Tag = NT_NestedNameSpecifierLoc;
-    new (Result.Storage.buffer) NestedNameSpecifierLoc(Node);
-    return Result;
-  }
-};
-template<> struct DynTypedNode::BaseConverter<QualType, void> {
-  static const QualType *get(NodeTypeTag Tag, const char Storage[]) {
-    if (Tag == NT_QualType)
-      return reinterpret_cast<const QualType*>(Storage);
-    return NULL;
-  }
-  static DynTypedNode create(const QualType &Node) {
-    DynTypedNode Result;
-    Result.Tag = NT_QualType;
-    new (Result.Storage.buffer) QualType(Node);
-    return Result;
-  }
-};
-template<> struct DynTypedNode::BaseConverter<TypeLoc, void> {
-  static const TypeLoc *get(NodeTypeTag Tag, const char Storage[]) {
-    if (Tag == NT_TypeLoc)
-      return reinterpret_cast<const TypeLoc*>(Storage);
-    return NULL;
-  }
-  static DynTypedNode create(const TypeLoc &Node) {
-    DynTypedNode Result;
-    Result.Tag = NT_TypeLoc;
-    new (Result.Storage.buffer) TypeLoc(Node);
-    return Result;
-  }
-};
+template <typename T>
+struct DynTypedNode::BaseConverter<
+    T, typename llvm::enable_if<llvm::is_base_of<
+           Decl, T> >::type> : public DynCastPtrConverter<T, Decl> {};
+
+template <typename T>
+struct DynTypedNode::BaseConverter<
+    T, typename llvm::enable_if<llvm::is_base_of<
+           Stmt, T> >::type> : public DynCastPtrConverter<T, Stmt> {};
+
+template <typename T>
+struct DynTypedNode::BaseConverter<
+    T, typename llvm::enable_if<llvm::is_base_of<
+           Type, T> >::type> : public DynCastPtrConverter<T, Type> {};
+
+template <>
+struct DynTypedNode::BaseConverter<
+    NestedNameSpecifier, void> : public PtrConverter<NestedNameSpecifier> {};
+
+template <>
+struct DynTypedNode::BaseConverter<
+    CXXCtorInitializer, void> : public PtrConverter<CXXCtorInitializer> {};
+
+template <>
+struct DynTypedNode::BaseConverter<
+    TemplateArgument, void> : public ValueConverter<TemplateArgument> {};
+
+template <>
+struct DynTypedNode::BaseConverter<
+    NestedNameSpecifierLoc,
+    void> : public ValueConverter<NestedNameSpecifierLoc> {};
+
+template <>
+struct DynTypedNode::BaseConverter<QualType,
+                                   void> : public ValueConverter<QualType> {};
+
+template <>
+struct DynTypedNode::BaseConverter<
+    TypeLoc, void> : public ValueConverter<TypeLoc> {};
+
 // The only operation we allow on unsupported types is \c get.
 // This allows to conveniently use \c DynTypedNode when having an arbitrary
 // AST node that is not supported, but prevents misuse - a user cannot create
 // a DynTypedNode from arbitrary types.
 template <typename T, typename EnablerT> struct DynTypedNode::BaseConverter {
-  static const T *get(NodeTypeTag Tag, const char Storage[]) { return NULL; }
+  static const T *get(ASTNodeKind NodeKind, const char Storage[]) {
+    return NULL;
+  }
 };
 
 inline const void *DynTypedNode::getMemoizationData() const {
-  switch (Tag) {
-    case NT_Decl: return BaseConverter<Decl>::get(Tag, Storage.buffer);
-    case NT_Stmt: return BaseConverter<Stmt>::get(Tag, Storage.buffer);
-    default: return NULL;
-  };
+  if (ASTNodeKind::getFromNodeKind<Decl>().isBaseOf(NodeKind)) {
+    return BaseConverter<Decl>::get(NodeKind, Storage.buffer);
+  } else if (ASTNodeKind::getFromNodeKind<Stmt>().isBaseOf(NodeKind)) {
+    return BaseConverter<Stmt>::get(NodeKind, Storage.buffer);
+  } else if (ASTNodeKind::getFromNodeKind<Type>().isBaseOf(NodeKind)) {
+    return BaseConverter<Type>::get(NodeKind, Storage.buffer);
+  } else if (ASTNodeKind::getFromNodeKind<NestedNameSpecifier>().isBaseOf(NodeKind)) {
+    return BaseConverter<NestedNameSpecifier>::get(NodeKind, Storage.buffer);
+  }
+  return NULL;
 }
 
 } // end namespace ast_type_traits
diff --git a/include/clang/AST/ASTUnresolvedSet.h b/include/clang/AST/ASTUnresolvedSet.h
index 5a56b4d2b46d..e8be67006c5b 100644
--- a/include/clang/AST/ASTUnresolvedSet.h
+++ b/include/clang/AST/ASTUnresolvedSet.h
@@ -22,12 +22,21 @@ namespace clang {
 
 /// \brief An UnresolvedSet-like class which uses the ASTContext's allocator.
 class ASTUnresolvedSet {
-  typedef ASTVector<DeclAccessPair> DeclsTy;
+  struct DeclsTy : ASTVector<DeclAccessPair> {
+    DeclsTy() {}
+    DeclsTy(ASTContext &C, unsigned N) : ASTVector<DeclAccessPair>(C, N) {}
+
+    bool isLazy() const { return getTag(); }
+    void setLazy(bool Lazy) { setTag(Lazy); }
+  };
+
   DeclsTy Decls;
 
   ASTUnresolvedSet(const ASTUnresolvedSet &) LLVM_DELETED_FUNCTION;
   void operator=(const ASTUnresolvedSet &) LLVM_DELETED_FUNCTION;
 
+  friend class LazyASTUnresolvedSet;
+
 public:
   ASTUnresolvedSet() {}
   ASTUnresolvedSet(ASTContext &C, unsigned N) : Decls(C, N) {}
@@ -48,7 +57,7 @@ public:
   /// Replaces the given declaration with the new one, once.
   ///
   /// \return true if the set changed
-  bool replace(const NamedDecl* Old, NamedDecl *New, AccessSpecifier AS) {
+  bool replace(const NamedDecl *Old, NamedDecl *New, AccessSpecifier AS) {
     for (DeclsTy::iterator I = Decls.begin(), E = Decls.end(); I != E; ++I) {
       if (I->getDecl() == Old) {
         I->set(New, AS);
@@ -58,10 +67,7 @@ public:
     return false;
   }
 
-  void erase(unsigned I) {
-    Decls[I] = Decls.back();
-    Decls.pop_back();
-  }
+  void erase(unsigned I) { Decls[I] = Decls.pop_back_val(); }
 
   void clear() { Decls.clear(); }
 
@@ -79,7 +85,29 @@ public:
   DeclAccessPair &operator[](unsigned I) { return Decls[I]; }
   const DeclAccessPair &operator[](unsigned I) const { return Decls[I]; }
 };
-  
+
+/// \brief An UnresolvedSet-like class that might not have been loaded from the
+/// external AST source yet.
+class LazyASTUnresolvedSet {
+  mutable ASTUnresolvedSet Impl;
+
+  void getFromExternalSource(ASTContext &C) const;
+
+public:
+  ASTUnresolvedSet &get(ASTContext &C) const {
+    if (Impl.Decls.isLazy())
+      getFromExternalSource(C);
+    return Impl;
+  }
+
+  void reserve(ASTContext &C, unsigned N) { Impl.reserve(C, N); }
+  void addLazyDecl(ASTContext &C, uintptr_t ID, AccessSpecifier AS) {
+    assert(Impl.empty() || Impl.Decls.isLazy());
+    Impl.Decls.setLazy(true);
+    Impl.addDecl(C, reinterpret_cast<NamedDecl*>(ID << 2), AS);
+  }
+};
+
 } // namespace clang
 
 #endif
diff --git a/include/clang/AST/ASTVector.h b/include/clang/AST/ASTVector.h
index 669e50dbeb87..6db918eaa631 100644
--- a/include/clang/AST/ASTVector.h
+++ b/include/clang/AST/ASTVector.h
@@ -55,16 +55,24 @@ namespace clang {
 
 template<typename T>
 class ASTVector {
-  T *Begin, *End, *Capacity;
+private:
+  T *Begin, *End;
+  llvm::PointerIntPair<T*, 1, bool> Capacity;
 
   void setEnd(T *P) { this->End = P; }
 
+protected:
+  // Make a tag bit available to users of this class.
+  // FIXME: This is a horrible hack.
+  bool getTag() const { return Capacity.getInt(); }
+  void setTag(bool B) { Capacity.setInt(B); }
+
 public:
   // Default ctor - Initialize to empty.
-  ASTVector() : Begin(NULL), End(NULL), Capacity(NULL) { }
+  ASTVector() : Begin(0), End(0), Capacity(0, false) {}
 
-  ASTVector(ASTContext &C, unsigned N)
-  : Begin(NULL), End(NULL), Capacity(NULL) {
+  ASTVector(const ASTContext &C, unsigned N)
+      : Begin(0), End(0), Capacity(0, false) {
     reserve(C, N);
   }
 
@@ -155,8 +163,8 @@ public:
     return const_pointer(Begin);
   }
 
-  void push_back(const_reference Elt, ASTContext &C) {
-    if (End < Capacity) {
+  void push_back(const_reference Elt, const ASTContext &C) {
+    if (End < this->capacity_ptr()) {
     Retry:
       new (End) T(Elt);
       ++End;
@@ -166,19 +174,19 @@ public:
     goto Retry;
   }
 
-  void reserve(ASTContext &C, unsigned N) {
-    if (unsigned(Capacity-Begin) < N)
+  void reserve(const ASTContext &C, unsigned N) {
+    if (unsigned(this->capacity_ptr()-Begin) < N)
       grow(C, N);
   }
 
   /// capacity - Return the total number of elements in the currently allocated
   /// buffer.
-  size_t capacity() const { return Capacity - Begin; }
+  size_t capacity() const { return this->capacity_ptr() - Begin; }
 
   /// append - Add the specified range to the end of the SmallVector.
   ///
   template<typename in_iter>
-  void append(ASTContext &C, in_iter in_start, in_iter in_end) {
+  void append(const ASTContext &C, in_iter in_start, in_iter in_end) {
     size_type NumInputs = std::distance(in_start, in_end);
 
     if (NumInputs == 0)
@@ -197,7 +205,7 @@ public:
 
   /// append - Add the specified range to the end of the SmallVector.
   ///
-  void append(ASTContext &C, size_type NumInputs, const T &Elt) {
+  void append(const ASTContext &C, size_type NumInputs, const T &Elt) {
     // Grow allocated space if needed.
     if (NumInputs > size_type(this->capacity_ptr()-this->end()))
       this->grow(C, this->size()+NumInputs);
@@ -214,13 +222,13 @@ public:
     std::uninitialized_copy(I, E, Dest);
   }
 
-  iterator insert(ASTContext &C, iterator I, const T &Elt) {
+  iterator insert(const ASTContext &C, iterator I, const T &Elt) {
     if (I == this->end()) {  // Important special case for empty vector.
-      push_back(Elt);
+      push_back(Elt, C);
       return this->end()-1;
     }
 
-    if (this->EndX < this->CapacityX) {
+    if (this->End < this->capacity_ptr()) {
     Retry:
       new (this->end()) T(this->back());
       this->setEnd(this->end()+1);
@@ -235,7 +243,7 @@ public:
     goto Retry;
   }
 
-  iterator insert(ASTContext &C, iterator I, size_type NumToInsert,
+  iterator insert(const ASTContext &C, iterator I, size_type NumToInsert,
                   const T &Elt) {
     if (I == this->end()) {  // Important special case for empty vector.
       append(C, NumToInsert, Elt);
@@ -284,7 +292,7 @@ public:
   }
 
   template<typename ItTy>
-  iterator insert(ASTContext &C, iterator I, ItTy From, ItTy To) {
+  iterator insert(const ASTContext &C, iterator I, ItTy From, ItTy To) {
     if (I == this->end()) {  // Important special case for empty vector.
       append(C, From, To);
       return this->end()-1;
@@ -335,7 +343,7 @@ public:
     return I;
   }
 
-  void resize(ASTContext &C, unsigned N, const T &NV) {
+  void resize(const ASTContext &C, unsigned N, const T &NV) {
     if (N < this->size()) {
       this->destroy_range(this->begin()+N, this->end());
       this->setEnd(this->begin()+N);
@@ -350,7 +358,7 @@ public:
 private:
   /// grow - double the size of the allocated memory, guaranteeing space for at
   /// least one more element or MinSize if specified.
-  void grow(ASTContext &C, size_type MinSize = 1);
+  void grow(const ASTContext &C, size_type MinSize = 1);
 
   void construct_range(T *S, T *E, const T &Elt) {
     for (; S != E; ++S)
@@ -365,13 +373,16 @@ private:
   }
 
 protected:
-  iterator capacity_ptr() { return (iterator)this->Capacity; }
+  const_iterator capacity_ptr() const {
+    return (iterator) Capacity.getPointer();
+  }
+  iterator capacity_ptr() { return (iterator)Capacity.getPointer(); }
 };
 
 // Define this out-of-line to dissuade the C++ compiler from inlining it.
 template <typename T>
-void ASTVector<T>::grow(ASTContext &C, size_t MinSize) {
-  size_t CurCapacity = Capacity-Begin;
+void ASTVector<T>::grow(const ASTContext &C, size_t MinSize) {
+  size_t CurCapacity = this->capacity();
   size_t CurSize = size();
   size_t NewCapacity = 2*CurCapacity;
   if (NewCapacity < MinSize)
@@ -394,7 +405,7 @@ void ASTVector<T>::grow(ASTContext &C, size_t MinSize) {
   // ASTContext never frees any memory.
   Begin = NewElts;
   End = NewElts+CurSize;
-  Capacity = Begin+NewCapacity;
+  Capacity.setPointer(Begin+NewCapacity);
 }
 
 } // end: clang namespace
diff --git a/include/clang/AST/Attr.h b/include/clang/AST/Attr.h
index 27dcef2a1e98..7dbf41350a0f 100644
--- a/include/clang/AST/Attr.h
+++ b/include/clang/AST/Attr.h
@@ -15,6 +15,7 @@
 #define LLVM_CLANG_AST_ATTR_H
 
 #include "clang/AST/AttrIterator.h"
+#include "clang/AST/Decl.h"
 #include "clang/AST/Type.h"
 #include "clang/Basic/AttrKinds.h"
 #include "clang/Basic/LLVM.h"
@@ -145,7 +146,7 @@ public:
   // Implement isa/cast/dyncast/etc.
   static bool classof(const Attr *A) {
     // Relies on relative order of enum emission with respect to param attrs.
-    return (A->getKind() <= attr::LAST_MS_INHERITABLE &&
+    return (A->getKind() <= attr::LAST_MS_INHERITANCE &&
             A->getKind() > attr::LAST_INHERITABLE_PARAM);
   }
 };
diff --git a/include/clang/AST/CXXInheritance.h b/include/clang/AST/CXXInheritance.h
index 2983e04cda34..dbe4ad0f5a1d 100644
--- a/include/clang/AST/CXXInheritance.h
+++ b/include/clang/AST/CXXInheritance.h
@@ -287,9 +287,9 @@ public:
 
   // Iterate over the set of overriding virtual methods in a given
   // subobject.
-  typedef SmallVector<UniqueVirtualMethod, 4>::iterator 
+  typedef SmallVectorImpl<UniqueVirtualMethod>::iterator
     overriding_iterator;
-  typedef SmallVector<UniqueVirtualMethod, 4>::const_iterator
+  typedef SmallVectorImpl<UniqueVirtualMethod>::const_iterator
     overriding_const_iterator;
 
   // Add a new overriding method for a particular subobject.
diff --git a/include/clang/AST/CanonicalType.h b/include/clang/AST/CanonicalType.h
index 946075739d06..9c699b7e0ae2 100644
--- a/include/clang/AST/CanonicalType.h
+++ b/include/clang/AST/CanonicalType.h
@@ -81,7 +81,7 @@ public:
   operator QualType() const { return Stored; }
 
   /// \brief Implicit conversion to bool.
-  operator bool() const { return !isNull(); }
+  LLVM_EXPLICIT operator bool() const { return !isNull(); }
   
   bool isNull() const {
     return Stored.isNull();
diff --git a/include/clang/AST/CharUnits.h b/include/clang/AST/CharUnits.h
index 082c672c2191..09ff6828ef5c 100644
--- a/include/clang/AST/CharUnits.h
+++ b/include/clang/AST/CharUnits.h
@@ -19,21 +19,20 @@
 #include "llvm/Support/MathExtras.h"
 
 namespace clang {
-  
+
   /// CharUnits - This is an opaque type for sizes expressed in character units.
-  /// Instances of this type represent a quantity as a multiple of the size 
+  /// Instances of this type represent a quantity as a multiple of the size
   /// of the standard C type, char, on the target architecture. As an opaque
   /// type, CharUnits protects you from accidentally combining operations on
-  /// quantities in bit units and character units. 
+  /// quantities in bit units and character units.
+  ///
+  /// In both C and C++, an object of type 'char', 'signed char', or 'unsigned
+  /// char' occupies exactly one byte, so 'character unit' and 'byte' refer to
+  /// the same quantity of storage. However, we use the term 'character unit'
+  /// rather than 'byte' to avoid an implication that a character unit is
+  /// exactly 8 bits.
   ///
-  /// It should be noted that characters and bytes are distinct concepts. Bytes
-  /// refer to addressable units of data storage on the target machine, and
-  /// characters are members of a set of elements used for the organization,
-  /// control, or representation of data. According to C99, bytes are allowed
-  /// to exceed characters in size, although currently, clang only supports
-  /// architectures where the two are the same size.
-  /// 
-  /// For portability, never assume that a target character is 8 bits wide. Use 
+  /// For portability, never assume that a target character is 8 bits wide. Use
   /// CharUnit values wherever you calculate sizes, offsets, or alignments
   /// in character units.
   class CharUnits {
diff --git a/include/clang/AST/Comment.h b/include/clang/AST/Comment.h
index c02a82f0fa55..28849f58a8ec 100644
--- a/include/clang/AST/Comment.h
+++ b/include/clang/AST/Comment.h
@@ -699,7 +699,10 @@ private:
   unsigned ParamIndex;
 
 public:
-  enum { InvalidParamIndex = ~0U };
+  enum LLVM_ENUM_INT_TYPE(unsigned) {
+    InvalidParamIndex = ~0U,
+    VarArgParamIndex = ~0U/*InvalidParamIndex*/ - 1U
+  };
 
   ParamCommandComment(SourceLocation LocBegin,
                       SourceLocation LocEnd,
@@ -755,14 +758,25 @@ public:
     return ParamIndex != InvalidParamIndex;
   }
 
+  bool isVarArgParam() const LLVM_READONLY {
+    return ParamIndex == VarArgParamIndex;
+  }
+
+  void setIsVarArgParam() {
+    ParamIndex = VarArgParamIndex;
+    assert(isParamIndexValid());
+  }
+
   unsigned getParamIndex() const LLVM_READONLY {
     assert(isParamIndexValid());
+    assert(!isVarArgParam());
     return ParamIndex;
   }
 
   void setParamIndex(unsigned Index) {
     ParamIndex = Index;
     assert(isParamIndexValid());
+    assert(!isVarArgParam());
   }
 };
 
@@ -1097,10 +1111,6 @@ public:
     return ThisDeclInfo;
   }
   
-  DeclInfo *getThisDeclInfo() const LLVM_READONLY {
-    return ThisDeclInfo;
-  }
-  
   ArrayRef<BlockContentComment *> getBlocks() const { return Blocks; }
   
 };
diff --git a/include/clang/AST/CommentCommandTraits.h b/include/clang/AST/CommentCommandTraits.h
index d1f5209d1eef..dde7a1442fe1 100644
--- a/include/clang/AST/CommentCommandTraits.h
+++ b/include/clang/AST/CommentCommandTraits.h
@@ -67,6 +67,9 @@ struct CommandInfo {
   /// a template parameter (\\tparam or an alias).
   unsigned IsTParamCommand : 1;
 
+  /// True if this command is \\throws or an alias.
+  unsigned IsThrowsCommand : 1;
+
   /// True if this command is \\deprecated or an alias.
   unsigned IsDeprecatedCommand : 1;
 
@@ -142,6 +145,8 @@ public:
     llvm_unreachable("the command should be known");
   }
 
+  const CommandInfo *getTypoCorrectCommandInfo(StringRef Typo) const;
+  
   const CommandInfo *getCommandInfo(unsigned CommandID) const;
 
   const CommandInfo *registerUnknownCommand(StringRef CommandName);
diff --git a/include/clang/AST/CommentCommands.td b/include/clang/AST/CommentCommands.td
index 8c88494e9ae4..ed323daa9f8b 100644
--- a/include/clang/AST/CommentCommands.td
+++ b/include/clang/AST/CommentCommands.td
@@ -15,6 +15,7 @@ class Command<string name> {
   bit IsReturnsCommand = 0;
   bit IsParamCommand = 0;
   bit IsTParamCommand = 0;
+  bit IsThrowsCommand = 0;
   bit IsDeprecatedCommand = 0;
   bit IsHeaderfileCommand = 0;
 
@@ -109,6 +110,10 @@ def Tparam : BlockCommand<"tparam"> { let IsTParamCommand = 1; }
 // HeaderDoc command for template parameter documentation.
 def Templatefield : BlockCommand<"templatefield"> { let IsTParamCommand = 1; }
 
+def Throws    : BlockCommand<"throws"> { let IsThrowsCommand = 1; }
+def Throw     : BlockCommand<"throw"> { let IsThrowsCommand = 1; }
+def Exception : BlockCommand<"exception"> { let IsThrowsCommand = 1; }
+
 def Deprecated : BlockCommand<"deprecated"> {
   let IsEmptyParagraphAllowed = 1;
   let IsDeprecatedCommand = 1;
@@ -200,11 +205,17 @@ def Mainpage : VerbatimLineCommand<"mainpage">;
 def Subpage  : VerbatimLineCommand<"subpage">;
 def Ref      : VerbatimLineCommand<"ref">;
 
+def Relates     : VerbatimLineCommand<"relates">;
+def Related     : VerbatimLineCommand<"related">;
+def RelatesAlso : VerbatimLineCommand<"relatesalso">;
+def RelatedAlso : VerbatimLineCommand<"relatedalso">;
+
 //===----------------------------------------------------------------------===//
 // DeclarationVerbatimLineCommand
 //===----------------------------------------------------------------------===//
 
 // Doxygen commands.
+def Def       : DeclarationVerbatimLineCommand<"def">;
 def Fn        : DeclarationVerbatimLineCommand<"fn">;
 def Namespace : DeclarationVerbatimLineCommand<"namespace">;
 def Overload  : DeclarationVerbatimLineCommand<"overload">;
diff --git a/include/clang/AST/CommentDiagnostic.h b/include/clang/AST/CommentDiagnostic.h
index 6e8941057994..312da065ff59 100644
--- a/include/clang/AST/CommentDiagnostic.h
+++ b/include/clang/AST/CommentDiagnostic.h
@@ -16,7 +16,7 @@ namespace clang {
   namespace diag {
     enum {
 #define DIAG(ENUM,FLAGS,DEFAULT_MAPPING,DESC,GROUP,\
-             SFINAE,ACCESS,NOWERROR,SHOWINSYSHEADER,CATEGORY) ENUM,
+             SFINAE,NOWERROR,SHOWINSYSHEADER,CATEGORY) ENUM,
 #define COMMENTSTART
 #include "clang/Basic/DiagnosticCommentKinds.inc"
 #undef DIAG
diff --git a/include/clang/AST/CommentParser.h b/include/clang/AST/CommentParser.h
index d6a1072786ed..7e008131d205 100644
--- a/include/clang/AST/CommentParser.h
+++ b/include/clang/AST/CommentParser.h
@@ -61,10 +61,8 @@ class Parser {
   void consumeToken() {
     if (MoreLATokens.empty())
       L.lex(Tok);
-    else {
-      Tok = MoreLATokens.back();
-      MoreLATokens.pop_back();
-    }
+    else
+      Tok = MoreLATokens.pop_back_val();
   }
 
   void putBack(const Token &OldTok) {
diff --git a/include/clang/AST/CommentSema.h b/include/clang/AST/CommentSema.h
index 15e454dcc389..39109602b148 100644
--- a/include/clang/AST/CommentSema.h
+++ b/include/clang/AST/CommentSema.h
@@ -58,9 +58,6 @@ class Sema {
   /// AST node for the \\brief command and its aliases.
   const BlockCommandComment *BriefCommand;
 
-  /// AST node for the \\returns command and its aliases.
-  const BlockCommandComment *ReturnsCommand;
-  
   /// AST node for the \\headerfile command.
   const BlockCommandComment *HeaderfileCommand;
 
@@ -211,7 +208,11 @@ public:
 
   bool isFunctionDecl();
   bool isAnyFunctionDecl();
+
+  /// \returns \c true if declaration that this comment is attached to declares
+  /// a function pointer.
   bool isFunctionPointerVarDecl();
+  bool isFunctionOrMethodVariadic();
   bool isObjCMethodDecl();
   bool isObjCPropertyDecl();
   bool isTemplateOrSpecialization();
@@ -220,6 +221,8 @@ public:
   bool isUnionDecl();
   bool isObjCInterfaceDecl();
   bool isObjCProtocolDecl();
+  bool isClassTemplateDecl();
+  bool isFunctionTemplateDecl();
 
   ArrayRef<const ParmVarDecl *> getParamVars();
 
diff --git a/include/clang/AST/Decl.h b/include/clang/AST/Decl.h
index a0c76c069b86..244a7b8d400c 100644
--- a/include/clang/AST/Decl.h
+++ b/include/clang/AST/Decl.h
@@ -24,6 +24,7 @@
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/Support/Compiler.h"
+#include "llvm/Support/raw_ostream.h"
 
 namespace clang {
 struct ASTTemplateArgumentListInfo;
@@ -43,6 +44,7 @@ class TemplateArgumentList;
 class TemplateParameterList;
 class TypeLoc;
 class UnresolvedSetImpl;
+class VarTemplateDecl;
 
 /// \brief A container of type source information.
 ///
@@ -109,7 +111,6 @@ class NamedDecl : public Decl {
 
 private:
   NamedDecl *getUnderlyingDeclImpl();
-  void verifyLinkage() const;
 
 protected:
   NamedDecl(Kind DK, DeclContext *DC, SourceLocation L, DeclarationName N)
@@ -142,7 +143,7 @@ public:
   // FIXME: Deprecated, move clients to getName().
   std::string getNameAsString() const { return Name.getAsString(); }
 
-  void printName(raw_ostream &os) const { return Name.printName(os); }
+  void printName(raw_ostream &os) const { os << Name; }
 
   /// getDeclName - Get the actual, stored name of the declaration,
   /// which may be a special name.
@@ -189,10 +190,13 @@ public:
 
   using Decl::isModulePrivate;
   using Decl::setModulePrivate;
-  
+
   /// \brief Determine whether this declaration is hidden from name lookup.
   bool isHidden() const { return Hidden; }
-  
+
+  /// \brief Set whether this declaration is hidden from name lookup.
+  void setHidden(bool Hide) { Hidden = Hide; }
+
   /// \brief Determine whether this declaration is a C++ class member.
   bool isCXXClassMember() const {
     const DeclContext *DC = getDeclContext();
@@ -212,11 +216,24 @@ public:
   bool isCXXInstanceMember() const;
 
   /// \brief Determine what kind of linkage this entity has.
-  Linkage getLinkage() const;
+  /// This is not the linkage as defined by the standard or the codegen notion
+  /// of linkage. It is just an implementation detail that is used to compute
+  /// those.
+  Linkage getLinkageInternal() const;
+
+  /// \brief Get the linkage from a semantic point of view. Entities in
+  /// anonymous namespaces are external (in c++98).
+  Linkage getFormalLinkage() const {
+    return clang::getFormalLinkage(getLinkageInternal());
+  }
 
   /// \brief True if this decl has external linkage.
-  bool hasExternalLinkage() const {
-    return getLinkage() == ExternalLinkage;
+  bool hasExternalFormalLinkage() const {
+    return isExternalFormalLinkage(getLinkageInternal());
+  }
+
+  bool isExternallyVisible() const {
+    return clang::isExternallyVisible(getLinkageInternal());
   }
 
   /// \brief Determines the visibility of this entity.
@@ -256,6 +273,13 @@ public:
     return const_cast<NamedDecl*>(this)->getUnderlyingDecl();
   }
 
+  NamedDecl *getMostRecentDecl() {
+    return cast<NamedDecl>(static_cast<Decl *>(this)->getMostRecentDecl());
+  }
+  const NamedDecl *getMostRecentDecl() const {
+    return const_cast<NamedDecl*>(this)->getMostRecentDecl();
+  }
+
   static bool classof(const Decl *D) { return classofKind(D->getKind()); }
   static bool classofKind(Kind K) { return K >= firstNamed && K <= lastNamed; }
 };
@@ -351,6 +375,7 @@ public:
   using redeclarable_base::redecls_end;
   using redeclarable_base::getPreviousDecl;
   using redeclarable_base::getMostRecentDecl;
+  using redeclarable_base::isFirstDecl;
 
   /// \brief Returns true if this is an anonymous namespace declaration.
   ///
@@ -377,7 +402,7 @@ public:
 
   /// \brief Get the original (first) namespace declaration.
   NamespaceDecl *getOriginalNamespace() {
-    if (isFirstDeclaration())
+    if (isFirstDecl())
       return this;
 
     return AnonOrFirstNamespaceAndInline.getPointer();
@@ -385,7 +410,7 @@ public:
 
   /// \brief Get the original (first) namespace declaration.
   const NamespaceDecl *getOriginalNamespace() const {
-    if (isFirstDeclaration())
+    if (isFirstDecl())
       return this;
 
     return AnonOrFirstNamespaceAndInline.getPointer();
@@ -394,9 +419,7 @@ public:
   /// \brief Return true if this declaration is an original (first) declaration
   /// of the namespace. This is false for non-original (subsequent) namespace
   /// declarations and anonymous namespaces.
-  bool isOriginalNamespace() const {
-    return isFirstDeclaration();
-  }
+  bool isOriginalNamespace() const { return isFirstDecl(); }
 
   /// \brief Retrieve the anonymous namespace nested inside this namespace,
   /// if any.
@@ -689,11 +712,21 @@ private:
 
     /// \brief Whether this variable is (C++0x) constexpr.
     unsigned IsConstexpr : 1;
+
+    /// \brief Whether this variable is the implicit variable for a lambda
+    /// init-capture.
+    unsigned IsInitCapture : 1;
+
+    /// \brief Whether this local extern variable's previous declaration was
+    /// declared in the same block scope. This controls whether we should merge
+    /// the type of this declaration with its previous declaration.
+    unsigned PreviousDeclInSameBlockScope : 1;
   };
-  enum { NumVarDeclBits = 12 };
+  enum { NumVarDeclBits = 14 };
 
   friend class ASTDeclReader;
   friend class StmtIteratorBase;
+  friend class ASTNodeImporter;
 
 protected:
   enum { NumParameterIndexBits = 8 };
@@ -732,15 +765,8 @@ protected:
   };
 
   VarDecl(Kind DK, DeclContext *DC, SourceLocation StartLoc,
-          SourceLocation IdLoc, IdentifierInfo *Id,
-          QualType T, TypeSourceInfo *TInfo, StorageClass SC)
-    : DeclaratorDecl(DK, DC, IdLoc, Id, T, TInfo, StartLoc), Init() {
-    assert(sizeof(VarDeclBitfields) <= sizeof(unsigned));
-    assert(sizeof(ParmVarDeclBitfields) <= sizeof(unsigned));
-    AllBits = 0;
-    VarDeclBits.SClass = SC;
-    // Everything else is implicitly initialized to false.
-  }
+          SourceLocation IdLoc, IdentifierInfo *Id, QualType T,
+          TypeSourceInfo *TInfo, StorageClass SC);
 
   typedef Redeclarable<VarDecl> redeclarable_base;
   virtual VarDecl *getNextRedeclaration() { return RedeclLink.getNext(); }
@@ -757,6 +783,7 @@ public:
   using redeclarable_base::redecls_end;
   using redeclarable_base::getPreviousDecl;
   using redeclarable_base::getMostRecentDecl;
+  using redeclarable_base::isFirstDecl;
 
   static VarDecl *Create(ASTContext &C, DeclContext *DC,
                          SourceLocation StartLoc, SourceLocation IdLoc,
@@ -797,7 +824,8 @@ public:
   ///  is a non-static local variable.
   bool hasLocalStorage() const {
     if (getStorageClass() == SC_None)
-      return !isFileVarDecl();
+      // Second check is for C++11 [dcl.stc]p4.
+      return !isFileVarDecl() && getTSCSpec() == TSCS_unspecified;
 
     // Return true for:  Auto, Register.
     // Return false for: Extern, Static, PrivateExtern, OpenCLWorkGroupLocal.
@@ -808,7 +836,10 @@ public:
   /// isStaticLocal - Returns true if a variable with function scope is a
   /// static local variable.
   bool isStaticLocal() const {
-    return getStorageClass() == SC_Static && !isFileVarDecl();
+    return (getStorageClass() == SC_Static ||
+            // C++11 [dcl.stc]p4
+            (getStorageClass() == SC_None && getTSCSpec() == TSCS_thread_local))
+      && !isFileVarDecl();
   }
 
   /// \brief Returns true if a variable has extern or __private_extern__
@@ -818,12 +849,19 @@ public:
            getStorageClass() == SC_PrivateExtern;
   }
 
-  /// hasGlobalStorage - Returns true for all variables that do not
-  ///  have local storage.  This includs all global variables as well
-  ///  as static variables declared within a function.
+  /// \brief Returns true for all variables that do not have local storage.
+  ///
+  /// This includes all global variables as well as static variables declared
+  /// within a function.
   bool hasGlobalStorage() const { return !hasLocalStorage(); }
 
-  /// Compute the language linkage.
+  /// \brief Get the storage duration of this variable, per C++ [basic.stc].
+  StorageDuration getStorageDuration() const {
+    return hasLocalStorage() ? SD_Automatic :
+           getTSCSpec() ? SD_Thread : SD_Static;
+  }
+
+  /// \brief Compute the language linkage.
   LanguageLinkage getLanguageLinkage() const;
 
   /// \brief Determines whether this variable is a variable with
@@ -847,7 +885,7 @@ public:
   bool isLocalVarDecl() const {
     if (getKind() != Decl::Var)
       return false;
-    if (const DeclContext *DC = getDeclContext())
+    if (const DeclContext *DC = getLexicalDeclContext())
       return DC->getRedeclContext()->isFunctionOrMethod();
     return false;
   }
@@ -857,7 +895,7 @@ public:
   bool isFunctionOrMethodVarDecl() const {
     if (getKind() != Decl::Var)
       return false;
-    const DeclContext *DC = getDeclContext()->getRedeclContext();
+    const DeclContext *DC = getLexicalDeclContext()->getRedeclContext();
     return DC->isFunctionOrMethod() && DC->getDeclKind() != Decl::Block;
   }
 
@@ -908,10 +946,6 @@ public:
     return const_cast<VarDecl*>(this)->getActingDefinition();
   }
 
-  /// \brief Determine whether this is a tentative definition of a
-  /// variable in C.
-  bool isTentativeDefinitionNow() const;
-
   /// \brief Get the real (not just tentative) definition for this declaration.
   VarDecl *getDefinition(ASTContext &);
   const VarDecl *getDefinition(ASTContext &C) const {
@@ -933,10 +967,11 @@ public:
 
   /// isFileVarDecl - Returns true for file scoped variable declaration.
   bool isFileVarDecl() const {
-    if (getKind() != Decl::Var)
+    Kind K = getKind();
+    if (K == ParmVar || K == ImplicitParam)
       return false;
 
-    if (getDeclContext()->getRedeclContext()->isFileContext())
+    if (getLexicalDeclContext()->getRedeclContext()->isFileContext())
       return true;
 
     if (isStaticDataMember())
@@ -1000,20 +1035,6 @@ public:
 
   void setInit(Expr *I);
 
-  /// \brief Determine whether this variable is a reference that
-  /// extends the lifetime of its temporary initializer.
-  ///
-  /// A reference extends the lifetime of its temporary initializer if
-  /// it's initializer is an rvalue that would normally go out of scope
-  /// at the end of the initializer (a full expression). In such cases,
-  /// the reference itself takes ownership of the temporary, which will
-  /// be destroyed when the reference goes out of scope. For example:
-  ///
-  /// \code
-  /// const int &r = 1.0; // creates a temporary of type 'int'
-  /// \endcode
-  bool extendsLifetimeOfTemporary() const;
-
   /// \brief Determine whether this variable's value can be used in a
   /// constant expression, according to the relevant language standard.
   /// This only checks properties of the declaration, and does not check
@@ -1123,15 +1144,34 @@ public:
   bool isConstexpr() const { return VarDeclBits.IsConstexpr; }
   void setConstexpr(bool IC) { VarDeclBits.IsConstexpr = IC; }
 
+  /// Whether this variable is the implicit variable for a lambda init-capture.
+  bool isInitCapture() const { return VarDeclBits.IsInitCapture; }
+  void setInitCapture(bool IC) { VarDeclBits.IsInitCapture = IC; }
+
+  /// Whether this local extern variable declaration's previous declaration
+  /// was declared in the same block scope. Only correct in C++.
+  bool isPreviousDeclInSameBlockScope() const {
+    return VarDeclBits.PreviousDeclInSameBlockScope;
+  }
+  void setPreviousDeclInSameBlockScope(bool Same) {
+    VarDeclBits.PreviousDeclInSameBlockScope = Same;
+  }
+
   /// \brief If this variable is an instantiated static data member of a
   /// class template specialization, returns the templated static data member
   /// from which it was instantiated.
   VarDecl *getInstantiatedFromStaticDataMember() const;
 
-  /// \brief If this variable is a static data member, determine what kind of
+  /// \brief If this variable is an instantiation of a variable template or a
+  /// static data member of a class template, determine what kind of
   /// template specialization or instantiation this is.
   TemplateSpecializationKind getTemplateSpecializationKind() const;
 
+  /// \brief If this variable is an instantiation of a variable template or a
+  /// static data member of a class template, determine its point of
+  /// instantiation.
+  SourceLocation getPointOfInstantiation() const;
+
   /// \brief If this variable is an instantiation of a static data member of a
   /// class template specialization, retrieves the member specialization
   /// information.
@@ -1142,6 +1182,26 @@ public:
   void setTemplateSpecializationKind(TemplateSpecializationKind TSK,
                         SourceLocation PointOfInstantiation = SourceLocation());
 
+  /// \brief Specify that this variable is an instantiation of the
+  /// static data member VD.
+  void setInstantiationOfStaticDataMember(VarDecl *VD,
+                                          TemplateSpecializationKind TSK);
+
+  /// \brief Retrieves the variable template that is described by this
+  /// variable declaration.
+  ///
+  /// Every variable template is represented as a VarTemplateDecl and a
+  /// VarDecl. The former contains template properties (such as
+  /// the template parameter lists) while the latter contains the
+  /// actual description of the template's
+  /// contents. VarTemplateDecl::getTemplatedDecl() retrieves the
+  /// VarDecl that from a VarTemplateDecl, while
+  /// getDescribedVarTemplate() retrieves the VarTemplateDecl from
+  /// a VarDecl.
+  VarTemplateDecl *getDescribedVarTemplate() const;
+
+  void setDescribedVarTemplate(VarTemplateDecl *Template);
+
   // Implement isa/cast/dyncast/etc.
   static bool classof(const Decl *D) { return classofKind(D->getKind()); }
   static bool classofKind(Kind K) { return K >= firstVar && K <= lastVar; }
@@ -1314,11 +1374,7 @@ public:
     ParmVarDeclBits.HasInheritedDefaultArg = I;
   }
 
-  QualType getOriginalType() const {
-    if (getTypeSourceInfo())
-      return getTypeSourceInfo()->getType();
-    return getType();
-  }
+  QualType getOriginalType() const;
 
   /// \brief Determine whether this parameter is actually a function
   /// parameter pack.
@@ -1517,6 +1573,7 @@ public:
   using redeclarable_base::redecls_end;
   using redeclarable_base::getPreviousDecl;
   using redeclarable_base::getMostRecentDecl;
+  using redeclarable_base::isFirstDecl;
 
   static FunctionDecl *Create(ASTContext &C, DeclContext *DC,
                               SourceLocation StartLoc, SourceLocation NLoc,
@@ -1701,6 +1758,10 @@ public:
   /// entry point into an executable program.
   bool isMain() const;
 
+  /// \brief Determines whether this function is a MSVCRT user defined entry
+  /// point.
+  bool isMSVCRTEntryPoint() const;
+
   /// \brief Determines whether this operator new or delete is one
   /// of the reserved global placement operators:
   ///    void *operator new(size_t, void *);
@@ -1716,6 +1777,28 @@ public:
   /// This function must be an allocation or deallocation function.
   bool isReservedGlobalPlacementOperator() const;
 
+  /// \brief Determines whether this function is one of the replaceable
+  /// global allocation functions:
+  ///    void *operator new(size_t);
+  ///    void *operator new(size_t, const std::nothrow_t &) noexcept;
+  ///    void *operator new[](size_t);
+  ///    void *operator new[](size_t, const std::nothrow_t &) noexcept;
+  ///    void operator delete(void *) noexcept;
+  ///    void operator delete(void *, std::size_t) noexcept;      [C++1y]
+  ///    void operator delete(void *, const std::nothrow_t &) noexcept;
+  ///    void operator delete[](void *) noexcept;
+  ///    void operator delete[](void *, std::size_t) noexcept;    [C++1y]
+  ///    void operator delete[](void *, const std::nothrow_t &) noexcept;
+  /// These functions have special behavior under C++1y [expr.new]:
+  ///    An implementation is allowed to omit a call to a replaceable global
+  ///    allocation function. [...]
+  bool isReplaceableGlobalAllocationFunction() const;
+
+  /// \brief Determine whether this function is a sized global deallocation
+  /// function in C++1y. If so, find and return the corresponding unsized
+  /// deallocation function.
+  FunctionDecl *getCorrespondingUnsizedGlobalDeallocationFunction() const;
+
   /// Compute the language linkage.
   LanguageLinkage getLanguageLinkage() const;
 
@@ -2039,7 +2122,7 @@ public:
 
 /// FieldDecl - An instance of this class is created by Sema::ActOnField to
 /// represent a member of a struct/union/class.
-class FieldDecl : public DeclaratorDecl {
+class FieldDecl : public DeclaratorDecl, public Mergeable<FieldDecl> {
   // FIXME: This can be packed into the bitfields in Decl.
   bool Mutable : 1;
   mutable unsigned CachedFieldIndex : 31;
@@ -2153,6 +2236,10 @@ public:
 
   SourceRange getSourceRange() const LLVM_READONLY;
 
+  /// Retrieves the canonical declaration of this field.
+  FieldDecl *getCanonicalDecl() { return getFirstDecl(); }
+  const FieldDecl *getCanonicalDecl() const { return getFirstDecl(); }
+
   // Implement isa/cast/dyncast/etc.
   static bool classof(const Decl *D) { return classofKind(D->getKind()); }
   static bool classofKind(Kind K) { return K >= firstField && K <= lastField; }
@@ -2165,7 +2252,7 @@ public:
 /// that is defined.  For example, in "enum X {a,b}", each of a/b are
 /// EnumConstantDecl's, X is an instance of EnumDecl, and the type of a/b is a
 /// TagType for the X EnumDecl.
-class EnumConstantDecl : public ValueDecl {
+class EnumConstantDecl : public ValueDecl, public Mergeable<EnumConstantDecl> {
   Stmt *Init; // an integer constant expression
   llvm::APSInt Val; // The value.
 protected:
@@ -2191,6 +2278,10 @@ public:
 
   SourceRange getSourceRange() const LLVM_READONLY;
 
+  /// Retrieves the canonical declaration of this enumerator.
+  EnumConstantDecl *getCanonicalDecl() { return getFirstDecl(); }
+  const EnumConstantDecl *getCanonicalDecl() const { return getFirstDecl(); }
+
   // Implement isa/cast/dyncast/etc.
   static bool classof(const Decl *D) { return classofKind(D->getKind()); }
   static bool classofKind(Kind K) { return K == EnumConstant; }
@@ -2289,14 +2380,14 @@ public:
 /// Base class for declarations which introduce a typedef-name.
 class TypedefNameDecl : public TypeDecl, public Redeclarable<TypedefNameDecl> {
   virtual void anchor();
-  /// UnderlyingType - This is the type the typedef is set to.
-  TypeSourceInfo *TInfo;
+  typedef std::pair<TypeSourceInfo*, QualType> ModedTInfo;
+  llvm::PointerUnion<TypeSourceInfo*, ModedTInfo*> MaybeModedTInfo;
 
 protected:
   TypedefNameDecl(Kind DK, DeclContext *DC, SourceLocation StartLoc,
                   SourceLocation IdLoc, IdentifierInfo *Id,
                   TypeSourceInfo *TInfo)
-    : TypeDecl(DK, DC, IdLoc, Id, StartLoc), TInfo(TInfo) {}
+    : TypeDecl(DK, DC, IdLoc, Id, StartLoc), MaybeModedTInfo(TInfo) {}
 
   typedef Redeclarable<TypedefNameDecl> redeclarable_base;
   virtual TypedefNameDecl *getNextRedeclaration() {
@@ -2315,26 +2406,31 @@ public:
   using redeclarable_base::redecls_end;
   using redeclarable_base::getPreviousDecl;
   using redeclarable_base::getMostRecentDecl;
+  using redeclarable_base::isFirstDecl;
 
-  TypeSourceInfo *getTypeSourceInfo() const {
-    return TInfo;
-  }
+  bool isModed() const { return MaybeModedTInfo.is<ModedTInfo*>(); }
 
-  /// Retrieves the canonical declaration of this typedef-name.
-  TypedefNameDecl *getCanonicalDecl() {
-    return getFirstDeclaration();
-  }
-  const TypedefNameDecl *getCanonicalDecl() const {
-    return getFirstDeclaration();
+  TypeSourceInfo *getTypeSourceInfo() const {
+    return isModed()
+      ? MaybeModedTInfo.get<ModedTInfo*>()->first
+      : MaybeModedTInfo.get<TypeSourceInfo*>();
   }
-
   QualType getUnderlyingType() const {
-    return TInfo->getType();
+    return isModed()
+      ? MaybeModedTInfo.get<ModedTInfo*>()->second
+      : MaybeModedTInfo.get<TypeSourceInfo*>()->getType();
   }
   void setTypeSourceInfo(TypeSourceInfo *newType) {
-    TInfo = newType;
+    MaybeModedTInfo = newType;
+  }
+  void setModedTypeSourceInfo(TypeSourceInfo *unmodedTSI, QualType modedTy) {
+    MaybeModedTInfo = new (getASTContext()) ModedTInfo(unmodedTSI, modedTy);
   }
 
+  /// Retrieves the canonical declaration of this typedef-name.
+  TypedefNameDecl *getCanonicalDecl() { return getFirstDecl(); }
+  const TypedefNameDecl *getCanonicalDecl() const { return getFirstDecl(); }
+
   // Implement isa/cast/dyncast/etc.
   static bool classof(const Decl *D) { return classofKind(D->getKind()); }
   static bool classofKind(Kind K) {
@@ -2436,6 +2532,9 @@ protected:
   /// This option is only enabled when modules are enabled.
   bool MayHaveOutOfDateDef : 1;
 
+  /// Has the full definition of this type been required by a use somewhere in
+  /// the TU.
+  bool IsCompleteDefinitionRequired : 1;
 private:
   SourceLocation RBraceLoc;
 
@@ -2443,33 +2542,33 @@ private:
   // to be used for the (uncommon) case of out-of-line declarations.
   typedef QualifierInfo ExtInfo;
 
-  /// TypedefNameDeclOrQualifier - If the (out-of-line) tag declaration name
+  /// \brief If the (out-of-line) tag declaration name
   /// is qualified, it points to the qualifier info (nns and range);
   /// otherwise, if the tag declaration is anonymous and it is part of
   /// a typedef or alias, it points to the TypedefNameDecl (used for mangling);
+  /// otherwise, if the tag declaration is anonymous and it is used as a
+  /// declaration specifier for variables, it points to the first VarDecl (used
+  /// for mangling);
   /// otherwise, it is a null (TypedefNameDecl) pointer.
-  llvm::PointerUnion<TypedefNameDecl*, ExtInfo*> TypedefNameDeclOrQualifier;
+  llvm::PointerUnion<NamedDecl *, ExtInfo *> NamedDeclOrQualifier;
 
-  bool hasExtInfo() const { return TypedefNameDeclOrQualifier.is<ExtInfo*>(); }
-  ExtInfo *getExtInfo() { return TypedefNameDeclOrQualifier.get<ExtInfo*>(); }
+  bool hasExtInfo() const { return NamedDeclOrQualifier.is<ExtInfo *>(); }
+  ExtInfo *getExtInfo() { return NamedDeclOrQualifier.get<ExtInfo *>(); }
   const ExtInfo *getExtInfo() const {
-    return TypedefNameDeclOrQualifier.get<ExtInfo*>();
+    return NamedDeclOrQualifier.get<ExtInfo *>();
   }
 
 protected:
-  TagDecl(Kind DK, TagKind TK, DeclContext *DC,
-          SourceLocation L, IdentifierInfo *Id,
-          TagDecl *PrevDecl, SourceLocation StartL)
-    : TypeDecl(DK, DC, L, Id, StartL), DeclContext(DK),
-      TypedefNameDeclOrQualifier((TypedefNameDecl*) 0) {
+  TagDecl(Kind DK, TagKind TK, DeclContext *DC, SourceLocation L,
+          IdentifierInfo *Id, TagDecl *PrevDecl, SourceLocation StartL)
+      : TypeDecl(DK, DC, L, Id, StartL), DeclContext(DK), TagDeclKind(TK),
+        IsCompleteDefinition(false), IsBeingDefined(false),
+        IsEmbeddedInDeclarator(false), IsFreeStanding(false),
+        IsCompleteDefinitionRequired(false),
+        NamedDeclOrQualifier((NamedDecl *)0) {
     assert((DK != Enum || TK == TTK_Enum) &&
            "EnumDecl not matched with TTK_Enum");
-    TagDeclKind = TK;
-    IsCompleteDefinition = false;
-    IsBeingDefined = false;
-    IsEmbeddedInDeclarator = false;
-    IsFreeStanding = false;
-    setPreviousDeclaration(PrevDecl);
+    setPreviousDecl(PrevDecl);
   }
 
   typedef Redeclarable<TagDecl> redeclarable_base;
@@ -2492,6 +2591,7 @@ public:
   using redeclarable_base::redecls_end;
   using redeclarable_base::getPreviousDecl;
   using redeclarable_base::getMostRecentDecl;
+  using redeclarable_base::isFirstDecl;
 
   SourceLocation getRBraceLoc() const { return RBraceLoc; }
   void setRBraceLoc(SourceLocation L) { RBraceLoc = L; }
@@ -2522,6 +2622,12 @@ public:
     return IsCompleteDefinition;
   }
 
+  /// \brief Return true if this complete decl is
+  /// required to be complete for some existing use.
+  bool isCompleteDefinitionRequired() const {
+    return IsCompleteDefinitionRequired;
+  }
+
   /// isBeingDefined - Return true if this decl is currently being defined.
   bool isBeingDefined() const {
     return IsBeingDefined;
@@ -2563,6 +2669,10 @@ public:
 
   void setCompleteDefinition(bool V) { IsCompleteDefinition = V; }
 
+  void setCompleteDefinitionRequired(bool V = true) {
+    IsCompleteDefinitionRequired = V;
+  }
+
   // FIXME: Return StringRef;
   const char *getKindName() const {
     return TypeWithKeyword::getTagTypeKindName(getTagKind());
@@ -2599,11 +2709,22 @@ public:
     return (getDeclName() || getTypedefNameForAnonDecl());
   }
 
+  bool hasDeclaratorForAnonDecl() const {
+    return dyn_cast_or_null<DeclaratorDecl>(
+        NamedDeclOrQualifier.get<NamedDecl *>());
+  }
+  DeclaratorDecl *getDeclaratorForAnonDecl() const {
+    return hasExtInfo() ? 0 : dyn_cast_or_null<DeclaratorDecl>(
+                                  NamedDeclOrQualifier.get<NamedDecl *>());
+  }
+
   TypedefNameDecl *getTypedefNameForAnonDecl() const {
-    return hasExtInfo() ? 0 :
-           TypedefNameDeclOrQualifier.get<TypedefNameDecl*>();
+    return hasExtInfo() ? 0 : dyn_cast_or_null<TypedefNameDecl>(
+                                  NamedDeclOrQualifier.get<NamedDecl *>());
   }
 
+  void setDeclaratorForAnonDecl(DeclaratorDecl *DD) { NamedDeclOrQualifier = DD; }
+
   void setTypedefNameForAnonDecl(TypedefNameDecl *TDD);
 
   /// \brief Retrieve the nested-name-specifier that qualifies the name of this
@@ -2702,21 +2823,22 @@ public:
     return cast<EnumDecl>(TagDecl::getCanonicalDecl());
   }
   const EnumDecl *getCanonicalDecl() const {
-    return cast<EnumDecl>(TagDecl::getCanonicalDecl());
+    return const_cast<EnumDecl*>(this)->getCanonicalDecl();
   }
 
-  const EnumDecl *getPreviousDecl() const {
-    return cast_or_null<EnumDecl>(TagDecl::getPreviousDecl());
-  }
   EnumDecl *getPreviousDecl() {
-    return cast_or_null<EnumDecl>(TagDecl::getPreviousDecl());
+    return cast_or_null<EnumDecl>(
+            static_cast<TagDecl *>(this)->getPreviousDecl());
   }
-
-  const EnumDecl *getMostRecentDecl() const {
-    return cast<EnumDecl>(TagDecl::getMostRecentDecl());
+  const EnumDecl *getPreviousDecl() const {
+    return const_cast<EnumDecl*>(this)->getPreviousDecl();
   }
+
   EnumDecl *getMostRecentDecl() {
-    return cast<EnumDecl>(TagDecl::getMostRecentDecl());
+    return cast<EnumDecl>(static_cast<TagDecl *>(this)->getMostRecentDecl());
+  }
+  const EnumDecl *getMostRecentDecl() const {
+    return const_cast<EnumDecl*>(this)->getMostRecentDecl();
   }
 
   EnumDecl *getDefinition() const {
@@ -2912,18 +3034,19 @@ public:
                             IdentifierInfo *Id, RecordDecl* PrevDecl = 0);
   static RecordDecl *CreateDeserialized(const ASTContext &C, unsigned ID);
 
-  const RecordDecl *getPreviousDecl() const {
-    return cast_or_null<RecordDecl>(TagDecl::getPreviousDecl());
-  }
   RecordDecl *getPreviousDecl() {
-    return cast_or_null<RecordDecl>(TagDecl::getPreviousDecl());
+    return cast_or_null<RecordDecl>(
+            static_cast<TagDecl *>(this)->getPreviousDecl());
   }
-
-  const RecordDecl *getMostRecentDecl() const {
-    return cast<RecordDecl>(TagDecl::getMostRecentDecl());
+  const RecordDecl *getPreviousDecl() const {
+    return const_cast<RecordDecl*>(this)->getPreviousDecl();
   }
+
   RecordDecl *getMostRecentDecl() {
-    return cast<RecordDecl>(TagDecl::getMostRecentDecl());
+    return cast<RecordDecl>(static_cast<TagDecl *>(this)->getMostRecentDecl());
+  }
+  const RecordDecl *getMostRecentDecl() const {
+    return const_cast<RecordDecl*>(this)->getMostRecentDecl();
   }
 
   bool hasFlexibleArrayMember() const { return HasFlexibleArrayMember; }
@@ -3106,13 +3229,17 @@ private:
   Capture *Captures;
   unsigned NumCaptures;
 
+  unsigned ManglingNumber;
+  Decl *ManglingContextDecl;
+
 protected:
   BlockDecl(DeclContext *DC, SourceLocation CaretLoc)
     : Decl(Block, DC, CaretLoc), DeclContext(Block),
       IsVariadic(false), CapturesCXXThis(false),
       BlockMissingReturnType(true), IsConversionFromLambda(false),
       ParamInfo(0), NumParams(0), Body(0),
-      SignatureAsWritten(0), Captures(0), NumCaptures(0) {}
+      SignatureAsWritten(0), Captures(0), NumCaptures(0),
+      ManglingNumber(0), ManglingContextDecl(0) {}
 
 public:
   static BlockDecl *Create(ASTContext &C, DeclContext *DC, SourceLocation L); 
@@ -3182,6 +3309,18 @@ public:
                    const Capture *end,
                    bool capturesCXXThis);
 
+   unsigned getBlockManglingNumber() const {
+     return ManglingNumber;
+   }
+   Decl *getBlockManglingContextDecl() const {
+     return ManglingContextDecl;    
+   }
+
+  void setBlockMangling(unsigned Number, Decl *Ctx) {
+    ManglingNumber = Number;
+    ManglingContextDecl = Ctx;
+  }
+
   virtual SourceRange getSourceRange() const LLVM_READONLY;
 
   // Implement isa/cast/dyncast/etc.
@@ -3354,7 +3493,7 @@ inline const PartialDiagnostic &operator<<(const PartialDiagnostic &PD,
 }
 
 template<typename decl_type>
-void Redeclarable<decl_type>::setPreviousDeclaration(decl_type *PrevDecl) {
+void Redeclarable<decl_type>::setPreviousDecl(decl_type *PrevDecl) {
   // Note: This routine is implemented here because we need both NamedDecl
   // and Redeclarable to be defined.
 
@@ -3364,10 +3503,16 @@ void Redeclarable<decl_type>::setPreviousDeclaration(decl_type *PrevDecl) {
     // Point to previous. Make sure that this is actually the most recent
     // redeclaration, or we can build invalid chains. If the most recent
     // redeclaration is invalid, it won't be PrevDecl, but we want it anyway.
-    First = PrevDecl->getFirstDeclaration();
+    First = PrevDecl->getFirstDecl();
     assert(First->RedeclLink.NextIsLatest() && "Expected first");
     decl_type *MostRecent = First->RedeclLink.getNext();
     RedeclLink = PreviousDeclLink(cast<decl_type>(MostRecent));
+
+    // If the declaration was previously visible, a redeclaration of it remains
+    // visible even if it wouldn't be visible by itself.
+    static_cast<decl_type*>(this)->IdentifierNamespace |=
+      MostRecent->getIdentifierNamespace() &
+      (Decl::IDNS_Ordinary | Decl::IDNS_Tag | Decl::IDNS_Type);
   } else {
     // Make this first.
     First = static_cast<decl_type*>(this);
diff --git a/include/clang/AST/DeclAccessPair.h b/include/clang/AST/DeclAccessPair.h
index 5731308f55e6..3c5056c6e55b 100644
--- a/include/clang/AST/DeclAccessPair.h
+++ b/include/clang/AST/DeclAccessPair.h
@@ -28,7 +28,7 @@ class NamedDecl;
 /// A POD class for pairing a NamedDecl* with an access specifier.
 /// Can be put into unions.
 class DeclAccessPair {
-  NamedDecl *Ptr; // we'd use llvm::PointerUnion, but it isn't trivial
+  uintptr_t Ptr; // we'd use llvm::PointerUnion, but it isn't trivial
 
   enum { Mask = 0x3 };
 
@@ -40,10 +40,10 @@ public:
   }
 
   NamedDecl *getDecl() const {
-    return (NamedDecl*) (~Mask & (uintptr_t) Ptr);
+    return reinterpret_cast<NamedDecl*>(~Mask & Ptr);
   }
   AccessSpecifier getAccess() const {
-    return AccessSpecifier(Mask & (uintptr_t) Ptr);
+    return AccessSpecifier(Mask & Ptr);
   }
 
   void setDecl(NamedDecl *D) {
@@ -53,8 +53,7 @@ public:
     set(getDecl(), AS);
   }
   void set(NamedDecl *D, AccessSpecifier AS) {
-    Ptr = reinterpret_cast<NamedDecl*>(uintptr_t(AS) |
-                                       reinterpret_cast<uintptr_t>(D));
+    Ptr = uintptr_t(AS) | reinterpret_cast<uintptr_t>(D);
   }
 
   operator NamedDecl*() const { return getDecl(); }
diff --git a/include/clang/AST/DeclBase.h b/include/clang/AST/DeclBase.h
index 754facfb591d..26eea64f9d34 100644
--- a/include/clang/AST/DeclBase.h
+++ b/include/clang/AST/DeclBase.h
@@ -16,6 +16,7 @@
 
 #include "clang/AST/AttrIterator.h"
 #include "clang/AST/DeclarationName.h"
+#include "clang/Basic/Linkage.h"
 #include "clang/Basic/Specifiers.h"
 #include "llvm/ADT/PointerUnion.h"
 #include "llvm/Support/Compiler.h"
@@ -31,6 +32,7 @@ class DeclarationName;
 class DependentDiagnostic;
 class EnumDecl;
 class FunctionDecl;
+class LinkageComputer;
 class LinkageSpecDecl;
 class Module;
 class NamedDecl;
@@ -157,7 +159,12 @@ public:
     /// This declaration is a C++ operator declared in a non-class
     /// context.  All such operators are also in IDNS_Ordinary.
     /// C++ lexical operator lookup looks for these.
-    IDNS_NonMemberOperator   = 0x0400
+    IDNS_NonMemberOperator   = 0x0400,
+
+    /// This declaration is a function-local extern declaration of a
+    /// variable or function. This may also be IDNS_Ordinary if it
+    /// has been declared outside any function.
+    IDNS_LocalExtern         = 0x0800
   };
 
   /// ObjCDeclQualifier - 'Qualifiers' written next to the return and
@@ -284,19 +291,16 @@ protected:
   /// IdentifierNamespace - This specifies what IDNS_* namespace this lives in.
   unsigned IdentifierNamespace : 12;
 
-  /// \brief Whether the \c CachedLinkage field is active.
-  ///
-  /// This field is only valid for NamedDecls subclasses.
-  mutable unsigned HasCachedLinkage : 1;
-
-  /// \brief If \c HasCachedLinkage, the linkage of this declaration.
-  ///
-  /// This field is only valid for NamedDecls subclasses.
-  mutable unsigned CachedLinkage : 2;
+  /// \brief If 0, we have not computed the linkage of this declaration.
+  /// Otherwise, it is the linkage + 1.
+  mutable unsigned CacheValidAndLinkage : 3;
 
   friend class ASTDeclWriter;
   friend class ASTDeclReader;
   friend class ASTReader;
+  friend class LinkageComputer;
+
+  template<typename decl_type> friend class Redeclarable;
 
 private:
   void CheckAccessDeclContext() const;
@@ -309,7 +313,7 @@ protected:
       HasAttrs(false), Implicit(false), Used(false), Referenced(false),
       Access(AS_none), FromASTFile(0), Hidden(0),
       IdentifierNamespace(getIdentifierNamespaceForKind(DK)),
-      HasCachedLinkage(0)
+      CacheValidAndLinkage(0)
   {
     if (StatisticsEnabled) add(DK);
   }
@@ -319,7 +323,7 @@ protected:
       HasAttrs(false), Implicit(false), Used(false), Referenced(false),
       Access(AS_none), FromASTFile(0), Hidden(0),
       IdentifierNamespace(getIdentifierNamespaceForKind(DK)),
-      HasCachedLinkage(0)
+      CacheValidAndLinkage(0)
   {
     if (StatisticsEnabled) add(DK);
   }
@@ -341,6 +345,18 @@ protected:
   /// \brief Update a potentially out-of-date declaration.
   void updateOutOfDate(IdentifierInfo &II) const;
 
+  Linkage getCachedLinkage() const {
+    return Linkage(CacheValidAndLinkage - 1);
+  }
+
+  void setCachedLinkage(Linkage L) const {
+    CacheValidAndLinkage = L + 1;
+  }
+
+  bool hasCachedLinkage() const {
+    return CacheValidAndLinkage;
+  }
+
 public:
 
   /// \brief Source range that this declaration covers.
@@ -419,7 +435,6 @@ public:
     return const_cast<AttrVec&>(const_cast<const Decl*>(this)->getAttrs());
   }
   const AttrVec &getAttrs() const;
-  void swapAttrs(Decl *D);
   void dropAttrs();
 
   void addAttr(Attr *A) {
@@ -490,7 +505,16 @@ public:
   /// whether the function is used.
   bool isUsed(bool CheckUsedAttr = true) const;
 
-  void setUsed(bool U = true) { Used = U; }
+  /// \brief Set whether the declaration is used, in the sense of odr-use.
+  ///
+  /// This should only be used immediately after creating a declaration.
+  void setIsUsed() { Used = true; }
+
+  /// \brief Mark the declaration used, in the sense of odr-use.
+  ///
+  /// This notifies any mutation listeners in addition to setting a bit
+  /// indicating the declaration is used.
+  void markUsed(ASTContext &C);
 
   /// \brief Whether this declaration was referenced.
   bool isReferenced() const;
@@ -513,13 +537,13 @@ public:
     NextInContextAndBits.setInt(Bits);
   }
 
-protected:
   /// \brief Whether this declaration was marked as being private to the
   /// module in which it was defined.
-  bool isModulePrivate() const { 
+  bool isModulePrivate() const {
     return NextInContextAndBits.getInt() & ModulePrivateFlag;
   }
-  
+
+protected:
   /// \brief Specify whether this declaration was marked as being private
   /// to the module in which it was defined.
   void setModulePrivate(bool MP = true) {
@@ -761,7 +785,12 @@ public:
   const Decl *getPreviousDecl() const { 
     return const_cast<Decl *>(this)->getPreviousDeclImpl();
   }
-  
+
+  /// \brief True if this is the first declaration in its redeclaration chain.
+  bool isFirstDecl() const {
+    return getPreviousDecl() == 0;
+  }
+
   /// \brief Retrieve the most recent declaration that declares the same entity
   /// as this declaration (which may be this declaration).
   Decl *getMostRecentDecl() { return getMostRecentDeclImpl(); }
@@ -777,8 +806,10 @@ public:
   ///  top-level Stmt* of that body.  Otherwise this method returns null.
   virtual Stmt* getBody() const { return 0; }
 
-  /// \brief Returns true if this Decl represents a declaration for a body of
+  /// \brief Returns true if this \c Decl represents a declaration for a body of
   /// code, such as a function or method definition.
+  /// Note that \c hasBody can also return true if any redeclaration of this
+  /// \c Decl represents a declaration for a body of code.
   virtual bool hasBody() const { return getBody() != 0; }
 
   /// getBodyRBrace - Gets the right brace of the body, if a body exists.
@@ -808,37 +839,71 @@ public:
   bool isFunctionOrFunctionTemplate() const;
 
   /// \brief Changes the namespace of this declaration to reflect that it's
+  /// a function-local extern declaration.
+  ///
+  /// These declarations appear in the lexical context of the extern
+  /// declaration, but in the semantic context of the enclosing namespace
+  /// scope.
+  void setLocalExternDecl() {
+    assert((IdentifierNamespace == IDNS_Ordinary ||
+            IdentifierNamespace == IDNS_OrdinaryFriend) &&
+           "namespace is not ordinary");
+
+    Decl *Prev = getPreviousDecl();
+    IdentifierNamespace &= ~IDNS_Ordinary;
+
+    IdentifierNamespace |= IDNS_LocalExtern;
+    if (Prev && Prev->getIdentifierNamespace() & IDNS_Ordinary)
+      IdentifierNamespace |= IDNS_Ordinary;
+  }
+
+  /// \brief Determine whether this is a block-scope declaration with linkage.
+  /// This will either be a local variable declaration declared 'extern', or a
+  /// local function declaration.
+  bool isLocalExternDecl() {
+    return IdentifierNamespace & IDNS_LocalExtern;
+  }
+
+  /// \brief Changes the namespace of this declaration to reflect that it's
   /// the object of a friend declaration.
   ///
   /// These declarations appear in the lexical context of the friending
   /// class, but in the semantic context of the actual entity.  This property
   /// applies only to a specific decl object;  other redeclarations of the
   /// same entity may not (and probably don't) share this property.
-  void setObjectOfFriendDecl(bool PreviouslyDeclared) {
+  void setObjectOfFriendDecl(bool PerformFriendInjection = false) {
     unsigned OldNS = IdentifierNamespace;
     assert((OldNS & (IDNS_Tag | IDNS_Ordinary |
-                     IDNS_TagFriend | IDNS_OrdinaryFriend)) &&
+                     IDNS_TagFriend | IDNS_OrdinaryFriend |
+                     IDNS_LocalExtern)) &&
            "namespace includes neither ordinary nor tag");
     assert(!(OldNS & ~(IDNS_Tag | IDNS_Ordinary | IDNS_Type |
-                       IDNS_TagFriend | IDNS_OrdinaryFriend)) &&
+                       IDNS_TagFriend | IDNS_OrdinaryFriend |
+                       IDNS_LocalExtern)) &&
            "namespace includes other than ordinary or tag");
 
-    IdentifierNamespace = 0;
+    Decl *Prev = getPreviousDecl();
+    IdentifierNamespace &= ~(IDNS_Ordinary | IDNS_Tag | IDNS_Type);
+
     if (OldNS & (IDNS_Tag | IDNS_TagFriend)) {
       IdentifierNamespace |= IDNS_TagFriend;
-      if (PreviouslyDeclared) IdentifierNamespace |= IDNS_Tag | IDNS_Type;
+      if (PerformFriendInjection ||
+          (Prev && Prev->getIdentifierNamespace() & IDNS_Tag))
+        IdentifierNamespace |= IDNS_Tag | IDNS_Type;
     }
 
-    if (OldNS & (IDNS_Ordinary | IDNS_OrdinaryFriend)) {
+    if (OldNS & (IDNS_Ordinary | IDNS_OrdinaryFriend | IDNS_LocalExtern)) {
       IdentifierNamespace |= IDNS_OrdinaryFriend;
-      if (PreviouslyDeclared) IdentifierNamespace |= IDNS_Ordinary;
+      if (PerformFriendInjection ||
+          (Prev && Prev->getIdentifierNamespace() & IDNS_Ordinary))
+        IdentifierNamespace |= IDNS_Ordinary;
     }
   }
 
   enum FriendObjectKind {
-    FOK_None, // not a friend object
-    FOK_Declared, // a friend of a previously-declared entity
-    FOK_Undeclared // a friend of a previously-undeclared entity
+    FOK_None,      ///< Not a friend object.
+    FOK_Declared,  ///< A friend of a previously-declared entity.
+    FOK_Undeclared ///< A friend of a previously-undeclared entity.
   };
 
   /// \brief Determines whether this declaration is the object of a
@@ -846,11 +911,11 @@ public:
   ///
   /// There is currently no direct way to find the associated FriendDecl.
   FriendObjectKind getFriendObjectKind() const {
-    unsigned mask
-      = (IdentifierNamespace & (IDNS_TagFriend | IDNS_OrdinaryFriend));
+    unsigned mask =
+        (IdentifierNamespace & (IDNS_TagFriend | IDNS_OrdinaryFriend));
     if (!mask) return FOK_None;
-    return (IdentifierNamespace & (IDNS_Tag | IDNS_Ordinary) ?
-              FOK_Declared : FOK_Undeclared);
+    return (IdentifierNamespace & (IDNS_Tag | IDNS_Ordinary) ? FOK_Declared
+                                                             : FOK_Undeclared);
   }
 
   /// Specifies that this declaration is a C++ overloaded non-member.
@@ -877,9 +942,6 @@ public:
   // Same as dump(), but forces color printing.
   LLVM_ATTRIBUTE_USED void dumpColor() const;
   void dump(raw_ostream &Out) const;
-  // Debuggers don't usually respect default arguments.
-  LLVM_ATTRIBUTE_USED void dumpXML() const;
-  void dumpXML(raw_ostream &OS) const;
 
 private:
   void setAttrsImpl(const AttrVec& Attrs, ASTContext &Ctx);
@@ -974,6 +1036,7 @@ protected:
   mutable Decl *LastDecl;
 
   friend class ExternalASTSource;
+  friend class ASTDeclReader;
   friend class ASTWriter;
 
   /// \brief Build up a chain of declarations.
@@ -1096,6 +1159,14 @@ public:
   /// C++0x scoped enums), and C++ linkage specifications.
   bool isTransparentContext() const;
 
+  /// \brief Determines whether this context or some of its ancestors is a
+  /// linkage specification context that specifies C linkage.
+  bool isExternCContext() const;
+
+  /// \brief Determines whether this context or some of its ancestors is a
+  /// linkage specification context that specifies C++ linkage.
+  bool isExternCXXContext() const;
+
   /// \brief Determine whether this declaration context is equivalent
   /// to the declaration context DC.
   bool Equals(const DeclContext *DC) const {
@@ -1429,12 +1500,20 @@ public:
     return const_cast<DeclContext*>(this)->lookup(Name);
   }
 
+  /// \brief Find the declarations with the given name that are visible
+  /// within this context; don't attempt to retrieve anything from an
+  /// external source.
+  lookup_result noload_lookup(DeclarationName Name);
+
   /// \brief A simplistic name lookup mechanism that performs name lookup
   /// into this declaration context without consulting the external source.
   ///
   /// This function should almost never be used, because it subverts the
   /// usual relationship between a DeclContext and the external source.
   /// See the ASTImporter for the (few, but important) use cases.
+  ///
+  /// FIXME: This is very inefficient; replace uses of it with uses of
+  /// noload_lookup.
   void localUncachedLookup(DeclarationName Name,
                            SmallVectorImpl<NamedDecl *> &Results);
 
@@ -1458,10 +1537,16 @@ public:
   /// of looking up every possible name.
   class all_lookups_iterator;
 
+  /// \brief Iterators over all possible lookups within this context.
   all_lookups_iterator lookups_begin() const;
-
   all_lookups_iterator lookups_end() const;
 
+  /// \brief Iterators over all possible lookups within this context that are
+  /// currently loaded; don't attempt to retrieve anything from an external
+  /// source.
+  all_lookups_iterator noload_lookups_begin() const;
+  all_lookups_iterator noload_lookups_end() const;
+
   /// udir_iterator - Iterates through the using-directives stored
   /// within this context.
   typedef UsingDirectiveDecl * const * udir_iterator;
@@ -1532,6 +1617,8 @@ public:
   static bool classof(const DeclContext *D) { return true; }
 
   LLVM_ATTRIBUTE_USED void dumpDeclContext() const;
+  LLVM_ATTRIBUTE_USED void dumpLookups() const;
+  LLVM_ATTRIBUTE_USED void dumpLookups(llvm::raw_ostream &OS) const;
 
 private:
   void reconcileExternalVisibleStorage();
@@ -1548,6 +1635,8 @@ private:
   friend class DependentDiagnostic;
   StoredDeclsMap *CreateStoredDeclsMap(ASTContext &C) const;
 
+  template<decl_iterator (DeclContext::*Begin)() const,
+           decl_iterator (DeclContext::*End)() const>
   void buildLookupImpl(DeclContext *DCtx);
   void makeDeclVisibleInContextWithFlags(NamedDecl *D, bool Internal,
                                          bool Rediscoverable);
diff --git a/include/clang/AST/DeclCXX.h b/include/clang/AST/DeclCXX.h
index c483dde1f518..dbc41320bd72 100644
--- a/include/clang/AST/DeclCXX.h
+++ b/include/clang/AST/DeclCXX.h
@@ -6,10 +6,11 @@
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
-//
-//  This file defines the C++ Decl subclasses, other than those for
-//  templates (in DeclTemplate.h) and friends (in DeclFriend.h).
-//
+///
+/// \file
+/// \brief Defines the C++ Decl subclasses, other than those for templates
+/// (found in DeclTemplate.h) and friends (in DeclFriend.h).
+///
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_CLANG_AST_DECLCXX_H
@@ -88,7 +89,7 @@ namespace llvm {
 
 namespace clang {
 
-/// @brief Represents an access specifier followed by colon ':'.
+/// \brief Represents an access specifier followed by colon ':'.
 ///
 /// An objects of this class represents sugar for the syntactic occurrence
 /// of an access specifier followed by a colon in the list of member
@@ -146,16 +147,16 @@ public:
 /// level of access (public, protected, private) is used for the
 /// derivation. For example:
 ///
-/// @code
+/// \code
 ///   class A { };
 ///   class B { };
 ///   class C : public virtual A, protected B { };
-/// @endcode
+/// \endcode
 ///
 /// In this code, C will have two CXXBaseSpecifiers, one for "public
 /// virtual A" and the other for "protected B".
 class CXXBaseSpecifier {
-  /// Range - The source code range that covers the full base
+  /// \brief The source code range that covers the full base
   /// specifier, including the "virtual" (if present) and access
   /// specifier (if present).
   SourceRange Range;
@@ -167,25 +168,26 @@ class CXXBaseSpecifier {
   /// \brief Whether this is a virtual base class or not.
   bool Virtual : 1;
 
-  /// BaseOfClass - Whether this is the base of a class (true) or of a
-  /// struct (false). This determines the mapping from the access
-  /// specifier as written in the source code to the access specifier
-  /// used for semantic analysis.
+  /// \brief Whether this is the base of a class (true) or of a struct (false).
+  ///
+  /// This determines the mapping from the access specifier as written in the
+  /// source code to the access specifier used for semantic analysis.
   bool BaseOfClass : 1;
 
-  /// Access - Access specifier as written in the source code (which
-  /// may be AS_none). The actual type of data stored here is an
-  /// AccessSpecifier, but we use "unsigned" here to work around a
-  /// VC++ bug.
+  /// \brief Access specifier as written in the source code (may be AS_none).
+  ///
+  /// The actual type of data stored here is an AccessSpecifier, but we use
+  /// "unsigned" here to work around a VC++ bug.
   unsigned Access : 2;
 
-  /// InheritConstructors - Whether the class contains a using declaration
+  /// \brief Whether the class contains a using declaration
   /// to inherit the named class's constructors.
   bool InheritConstructors : 1;
 
-  /// BaseTypeInfo - The type of the base class. This will be a class or struct
-  /// (or a typedef of such). The source code range does not include the
-  /// "virtual" or access specifier.
+  /// \brief The type of the base class.
+  ///
+  /// This will be a class or struct (or a typedef of such). The source code
+  /// range does not include the \c virtual or the access specifier.
   TypeSourceInfo *BaseTypeInfo;
 
 public:
@@ -196,14 +198,12 @@ public:
     : Range(R), EllipsisLoc(EllipsisLoc), Virtual(V), BaseOfClass(BC),
       Access(A), InheritConstructors(false), BaseTypeInfo(TInfo) { }
 
-  /// getSourceRange - Retrieves the source range that contains the
-  /// entire base specifier.
+  /// \brief Retrieves the source range that contains the entire base specifier.
   SourceRange getSourceRange() const LLVM_READONLY { return Range; }
   SourceLocation getLocStart() const LLVM_READONLY { return Range.getBegin(); }
   SourceLocation getLocEnd() const LLVM_READONLY { return Range.getEnd(); }
 
-  /// isVirtual - Determines whether the base class is a virtual base
-  /// class (or not).
+  /// \brief Determines whether the base class is a virtual base class (or not).
   bool isVirtual() const { return Virtual; }
 
   /// \brief Determine whether this base class is a base of a class declared
@@ -226,11 +226,11 @@ public:
     return EllipsisLoc;
   }
 
-  /// getAccessSpecifier - Returns the access specifier for this base
-  /// specifier. This is the actual base specifier as used for
-  /// semantic analysis, so the result can never be AS_none. To
-  /// retrieve the access specifier as written in the source code, use
-  /// getAccessSpecifierAsWritten().
+  /// \brief Returns the access specifier for this base specifier. 
+  ///
+  /// This is the actual base specifier as used for semantic analysis, so
+  /// the result can never be AS_none. To retrieve the access specifier as
+  /// written in the source code, use getAccessSpecifierAsWritten().
   AccessSpecifier getAccessSpecifier() const {
     if ((AccessSpecifier)Access == AS_none)
       return BaseOfClass? AS_private : AS_public;
@@ -238,19 +238,23 @@ public:
       return (AccessSpecifier)Access;
   }
 
-  /// getAccessSpecifierAsWritten - Retrieves the access specifier as
-  /// written in the source code (which may mean that no access
-  /// specifier was explicitly written). Use getAccessSpecifier() to
-  /// retrieve the access specifier for use in semantic analysis.
+  /// \brief Retrieves the access specifier as written in the source code
+  /// (which may mean that no access specifier was explicitly written).
+  ///
+  /// Use getAccessSpecifier() to retrieve the access specifier for use in
+  /// semantic analysis.
   AccessSpecifier getAccessSpecifierAsWritten() const {
     return (AccessSpecifier)Access;
   }
 
-  /// getType - Retrieves the type of the base class. This type will
-  /// always be an unqualified class type.
-  QualType getType() const { return BaseTypeInfo->getType(); }
+  /// \brief Retrieves the type of the base class.
+  ///
+  /// This type will always be an unqualified class type.
+  QualType getType() const {
+    return BaseTypeInfo->getType().getUnqualifiedType();
+  }
 
-  /// getTypeLoc - Retrieves the type and source location of the base class.
+  /// \brief Retrieves the type and source location of the base class.
   TypeSourceInfo *getTypeSourceInfo() const { return BaseTypeInfo; }
 };
 
@@ -264,7 +268,8 @@ enum MSInheritanceModel {
   MSIM_Unspecified
 };
 
-/// CXXRecordDecl - Represents a C++ struct/union/class.
+/// \brief Represents a C++ struct/union/class.
+///
 /// FIXME: This class will disappear once we've properly taught RecordDecl
 /// to deal with C++-specific things.
 class CXXRecordDecl : public RecordDecl {
@@ -288,32 +293,32 @@ class CXXRecordDecl : public RecordDecl {
     /// \brief True if this class has any user-declared constructors.
     bool UserDeclaredConstructor : 1;
 
-    /// The user-declared special members which this class has.
+    /// \brief The user-declared special members which this class has.
     unsigned UserDeclaredSpecialMembers : 6;
 
-    /// Aggregate - True when this class is an aggregate.
+    /// \brief True when this class is an aggregate.
     bool Aggregate : 1;
 
-    /// PlainOldData - True when this class is a POD-type.
+    /// \brief True when this class is a POD-type.
     bool PlainOldData : 1;
 
-    /// Empty - true when this class is empty for traits purposes,
+    /// true when this class is empty for traits purposes,
     /// i.e. has no data members other than 0-width bit-fields, has no
     /// virtual function/base, and doesn't inherit from a non-empty
     /// class. Doesn't take union-ness into account.
     bool Empty : 1;
 
-    /// Polymorphic - True when this class is polymorphic, i.e. has at
+    /// \brief True when this class is polymorphic, i.e., has at
     /// least one virtual member or derives from a polymorphic class.
     bool Polymorphic : 1;
 
-    /// Abstract - True when this class is abstract, i.e. has at least
+    /// \brief True when this class is abstract, i.e., has at least
     /// one pure virtual function, (that can come from a base class).
     bool Abstract : 1;
 
-    /// IsStandardLayout - True when this class has standard layout.
+    /// \brief True when this class has standard layout.
     ///
-    /// C++0x [class]p7.  A standard-layout class is a class that:
+    /// C++11 [class]p7.  A standard-layout class is a class that:
     /// * has no non-static data members of type non-standard-layout class (or
     ///   array of such types) or reference,
     /// * has no virtual functions (10.3) and no virtual base classes (10.1),
@@ -327,20 +332,19 @@ class CXXRecordDecl : public RecordDecl {
     ///   member.
     bool IsStandardLayout : 1;
 
-    /// HasNoNonEmptyBases - True when there are no non-empty base classes.
+    /// \brief True when there are no non-empty base classes.
     ///
     /// This is a helper bit of state used to implement IsStandardLayout more
     /// efficiently.
     bool HasNoNonEmptyBases : 1;
 
-    /// HasPrivateFields - True when there are private non-static data members.
+    /// \brief True when there are private non-static data members.
     bool HasPrivateFields : 1;
 
-    /// HasProtectedFields - True when there are protected non-static data
-    /// members.
+    /// \brief True when there are protected non-static data members.
     bool HasProtectedFields : 1;
 
-    /// HasPublicFields - True when there are private non-static data members.
+    /// \brief True when there are private non-static data members.
     bool HasPublicFields : 1;
 
     /// \brief True if this class (or any subobject) has mutable fields.
@@ -353,8 +357,10 @@ class CXXRecordDecl : public RecordDecl {
     bool HasInClassInitializer : 1;
 
     /// \brief True if any field is of reference type, and does not have an
-    /// in-class initializer. In this case, value-initialization of this class
-    /// is illegal in C++98 even if the class has a trivial default constructor.
+    /// in-class initializer.
+    ///
+    /// In this case, value-initialization of this class is illegal in C++98
+    /// even if the class has a trivial default constructor.
     bool HasUninitializedReferenceMember : 1;
 
     /// \brief These flags are \c true if a defaulted corresponding special
@@ -389,30 +395,29 @@ class CXXRecordDecl : public RecordDecl {
     /// members which have not yet been declared.
     unsigned DeclaredNonTrivialSpecialMembers : 6;
 
-    /// HasIrrelevantDestructor - True when this class has a destructor with no
-    /// semantic effect.
+    /// \brief True when this class has a destructor with no semantic effect.
     bool HasIrrelevantDestructor : 1;
 
-    /// HasConstexprNonCopyMoveConstructor - True when this class has at least
-    /// one user-declared constexpr constructor which is neither the copy nor
-    /// move constructor.
+    /// \brief True when this class has at least one user-declared constexpr
+    /// constructor which is neither the copy nor move constructor.
     bool HasConstexprNonCopyMoveConstructor : 1;
 
-    /// DefaultedDefaultConstructorIsConstexpr - True if a defaulted default
-    /// constructor for this class would be constexpr.
+    /// \brief True if a defaulted default constructor for this class would
+    /// be constexpr.
     bool DefaultedDefaultConstructorIsConstexpr : 1;
 
-    /// HasConstexprDefaultConstructor - True if this class has a constexpr
-    /// default constructor (either user-declared or implicitly declared).
+    /// \brief True if this class has a constexpr default constructor.
+    ///
+    /// This is true for either a user-declared constexpr default constructor
+    /// or an implicitly declared constexpr default constructor..
     bool HasConstexprDefaultConstructor : 1;
 
-    /// HasNonLiteralTypeFieldsOrBases - True when this class contains at least
-    /// one non-static data member or base class of non-literal or volatile
-    /// type.
+    /// \brief True when this class contains at least one non-static data
+    /// member or base class of non-literal or volatile type.
     bool HasNonLiteralTypeFieldsOrBases : 1;
 
-    /// ComputedVisibleConversions - True when visible conversion functions are
-    /// already computed and are available.
+    /// \brief True when visible conversion functions are already computed
+    /// and are available.
     bool ComputedVisibleConversions : 1;
 
     /// \brief Whether we have a C++11 user-provided default constructor (not
@@ -439,50 +444,44 @@ class CXXRecordDecl : public RecordDecl {
     /// const-qualified reference parameter or a non-reference parameter.
     bool HasDeclaredCopyAssignmentWithConstParam : 1;
 
-    /// \brief Whether an implicit move constructor was attempted to be declared
-    /// but would have been deleted.
-    bool FailedImplicitMoveConstructor : 1;
-
-    /// \brief Whether an implicit move assignment operator was attempted to be
-    /// declared but would have been deleted.
-    bool FailedImplicitMoveAssignment : 1;
-
     /// \brief Whether this class describes a C++ lambda.
     bool IsLambda : 1;
 
-    /// NumBases - The number of base class specifiers in Bases.
+    /// \brief The number of base class specifiers in Bases.
     unsigned NumBases;
 
-    /// NumVBases - The number of virtual base class specifiers in VBases.
+    /// \brief The number of virtual base class specifiers in VBases.
     unsigned NumVBases;
 
-    /// Bases - Base classes of this class.
+    /// \brief Base classes of this class.
+    ///
     /// FIXME: This is wasted space for a union.
     LazyCXXBaseSpecifiersPtr Bases;
 
-    /// VBases - direct and indirect virtual base classes of this class.
+    /// \brief direct and indirect virtual base classes of this class.
     LazyCXXBaseSpecifiersPtr VBases;
 
-    /// Conversions - Overload set containing the conversion functions
-    /// of this C++ class (but not its inherited conversion
-    /// functions). Each of the entries in this overload set is a
-    /// CXXConversionDecl.
-    ASTUnresolvedSet Conversions;
+    /// \brief The conversion functions of this C++ class (but not its
+    /// inherited conversion functions).
+    ///
+    /// Each of the entries in this overload set is a CXXConversionDecl.
+    LazyASTUnresolvedSet Conversions;
 
-    /// VisibleConversions - Overload set containing the conversion
-    /// functions of this C++ class and all those inherited conversion
-    /// functions that are visible in this class. Each of the entries
-    /// in this overload set is a CXXConversionDecl or a
+    /// \brief The conversion functions of this C++ class and all those
+    /// inherited conversion functions that are visible in this class.
+    ///
+    /// Each of the entries in this overload set is a CXXConversionDecl or a
     /// FunctionTemplateDecl.
-    ASTUnresolvedSet VisibleConversions;
+    LazyASTUnresolvedSet VisibleConversions;
 
-    /// Definition - The declaration which defines this record.
+    /// \brief The declaration which defines this record.
     CXXRecordDecl *Definition;
 
-    /// FirstFriend - The first friend declaration in this class, or
-    /// null if there aren't any.  This is actually currently stored
-    /// in reverse order.
-    FriendDecl *FirstFriend;
+    /// \brief The first friend declaration in this class, or null if there
+    /// aren't any. 
+    ///
+    /// This is actually currently stored in reverse order.
+    LazyDeclPtr FirstFriend;
 
     /// \brief Retrieve the set of direct base classes.
     CXXBaseSpecifier *getBases() const {
@@ -507,10 +506,12 @@ class CXXRecordDecl : public RecordDecl {
   struct LambdaDefinitionData : public DefinitionData {
     typedef LambdaExpr::Capture Capture;
     
-    LambdaDefinitionData(CXXRecordDecl *D, TypeSourceInfo *Info, bool Dependent) 
-      : DefinitionData(D), Dependent(Dependent), NumCaptures(0), 
-        NumExplicitCaptures(0), ManglingNumber(0), ContextDecl(0), Captures(0),
-        MethodTyInfo(Info) 
+       LambdaDefinitionData(CXXRecordDecl *D, TypeSourceInfo *Info, 
+                         bool Dependent, bool IsGeneric, 
+                         LambdaCaptureDefault CaptureDefault) 
+      : DefinitionData(D), Dependent(Dependent), IsGenericLambda(IsGeneric), 
+        CaptureDefault(CaptureDefault), NumCaptures(0), NumExplicitCaptures(0), 
+        ManglingNumber(0), ContextDecl(0), Captures(0), MethodTyInfo(Info)
     {
       IsLambda = true;
     }
@@ -522,14 +523,20 @@ class CXXRecordDecl : public RecordDecl {
     /// within the default argument of a function template, because the
     /// lambda will have been created with the enclosing context as its
     /// declaration context, rather than function. This is an unfortunate
-    /// artifact of having to parse the default arguments before 
+    /// artifact of having to parse the default arguments before. 
     unsigned Dependent : 1;
     
-    /// \brief The number of captures in this lambda.
-    unsigned NumCaptures : 16;
+    /// \brief Whether this lambda is a generic lambda.
+    unsigned IsGenericLambda : 1;
+
+    /// \brief The Default Capture.
+    unsigned CaptureDefault : 2;
+
+    /// \brief The number of captures in this lambda is limited 2^NumCaptures.
+    unsigned NumCaptures : 15;
 
     /// \brief The number of explicit captures in this lambda.
-    unsigned NumExplicitCaptures : 15;
+    unsigned NumExplicitCaptures : 13;
 
     /// \brief The number used to indicate this lambda expression for name 
     /// mangling in the Itanium C++ ABI.
@@ -547,6 +554,7 @@ class CXXRecordDecl : public RecordDecl {
 
     /// \brief The type of the call method.
     TypeSourceInfo *MethodTyInfo;
+       
   };
 
   struct DefinitionData &data() {
@@ -569,7 +577,7 @@ class CXXRecordDecl : public RecordDecl {
   /// \brief The template or declaration that this declaration
   /// describes or was instantiated from, respectively.
   ///
-  /// For non-templates, this value will be NULL. For record
+  /// For non-templates, this value will be null. For record
   /// declarations that describe a class template, this will be a
   /// pointer to a ClassTemplateDecl. For member
   /// classes of class template specializations, this will be the
@@ -597,27 +605,29 @@ class CXXRecordDecl : public RecordDecl {
 
   friend class ASTNodeImporter;
 
+  /// \brief Get the head of our list of friend declarations, possibly
+  /// deserializing the friends from an external AST source.
+  FriendDecl *getFirstFriend() const;
+
 protected:
   CXXRecordDecl(Kind K, TagKind TK, DeclContext *DC,
                 SourceLocation StartLoc, SourceLocation IdLoc,
                 IdentifierInfo *Id, CXXRecordDecl *PrevDecl);
 
 public:
-  /// base_class_iterator - Iterator that traverses the base classes
-  /// of a class.
+  /// \brief Iterator that traverses the base classes of a class.
   typedef CXXBaseSpecifier*       base_class_iterator;
 
-  /// base_class_const_iterator - Iterator that traverses the base
-  /// classes of a class.
+  /// \brief Iterator that traverses the base classes of a class.
   typedef const CXXBaseSpecifier* base_class_const_iterator;
 
-  /// reverse_base_class_iterator = Iterator that traverses the base classes
-  /// of a class in reverse order.
+  /// \brief Iterator that traverses the base classes of a class in reverse
+  /// order.
   typedef std::reverse_iterator<base_class_iterator>
     reverse_base_class_iterator;
 
-  /// reverse_base_class_iterator = Iterator that traverses the base classes
-  /// of a class in reverse order.
+  /// \brief Iterator that traverses the base classes of a class in reverse
+  /// order.
   typedef std::reverse_iterator<base_class_const_iterator>
     reverse_base_class_const_iterator;
 
@@ -628,18 +638,21 @@ public:
     return cast<CXXRecordDecl>(RecordDecl::getCanonicalDecl());
   }
 
+  CXXRecordDecl *getPreviousDecl() {
+    return cast_or_null<CXXRecordDecl>(
+            static_cast<RecordDecl *>(this)->getPreviousDecl());
+  }
   const CXXRecordDecl *getPreviousDecl() const {
-    return cast_or_null<CXXRecordDecl>(RecordDecl::getPreviousDecl());
+    return const_cast<CXXRecordDecl*>(this)->getPreviousDecl();
   }
-  CXXRecordDecl *getPreviousDecl() {
-    return cast_or_null<CXXRecordDecl>(RecordDecl::getPreviousDecl());
+
+  CXXRecordDecl *getMostRecentDecl() {
+    return cast<CXXRecordDecl>(
+            static_cast<RecordDecl *>(this)->getMostRecentDecl());
   }
 
   const CXXRecordDecl *getMostRecentDecl() const {
-    return cast_or_null<CXXRecordDecl>(RecordDecl::getMostRecentDecl());
-  }
-  CXXRecordDecl *getMostRecentDecl() {
-    return cast_or_null<CXXRecordDecl>(RecordDecl::getMostRecentDecl());
+    return const_cast<CXXRecordDecl*>(this)->getMostRecentDecl();
   }
 
   CXXRecordDecl *getDefinition() const {
@@ -655,18 +668,18 @@ public:
                                bool DelayTypeCreation = false);
   static CXXRecordDecl *CreateLambda(const ASTContext &C, DeclContext *DC,
                                      TypeSourceInfo *Info, SourceLocation Loc,
-                                     bool DependentLambda);
+                                     bool DependentLambda, bool IsGeneric, 
+                                     LambdaCaptureDefault CaptureDefault);
   static CXXRecordDecl *CreateDeserialized(const ASTContext &C, unsigned ID);
 
   bool isDynamicClass() const {
     return data().Polymorphic || data().NumVBases != 0;
   }
 
-  /// setBases - Sets the base classes of this struct or class.
+  /// \brief Sets the base classes of this struct or class.
   void setBases(CXXBaseSpecifier const * const *Bases, unsigned NumBases);
 
-  /// getNumBases - Retrieves the number of base classes of this
-  /// class.
+  /// \brief Retrieves the number of base classes of this class.
   unsigned getNumBases() const { return data().NumBases; }
 
   base_class_iterator bases_begin() { return data().getBases(); }
@@ -688,8 +701,7 @@ public:
     return reverse_base_class_const_iterator(bases_begin());
   }
 
-  /// getNumVBases - Retrieves the number of virtual base classes of this
-  /// class.
+  /// \brief Retrieves the number of virtual base classes of this class.
   unsigned getNumVBases() const { return data().NumVBases; }
 
   base_class_iterator vbases_begin() { return data().getVBases(); }
@@ -720,12 +732,12 @@ public:
   /// special methods, etc.
   typedef specific_decl_iterator<CXXMethodDecl> method_iterator;
 
-  /// method_begin - Method begin iterator.  Iterates in the order the methods
+  /// \brief Method begin iterator.  Iterates in the order the methods
   /// were declared.
   method_iterator method_begin() const {
     return method_iterator(decls_begin());
   }
-  /// method_end - Method end iterator.
+  /// \brief Method past-the-end iterator.
   method_iterator method_end() const {
     return method_iterator(decls_end());
   }
@@ -749,18 +761,20 @@ public:
 
   /// Determines whether this record has any friends.
   bool hasFriends() const {
-    return data().FirstFriend != 0;
+    return data().FirstFriend.isValid();
   }
 
   /// \brief \c true if we know for sure that this class has a single,
   /// accessible, unambiguous move constructor that is not deleted.
   bool hasSimpleMoveConstructor() const {
-    return !hasUserDeclaredMoveConstructor() && hasMoveConstructor();
+    return !hasUserDeclaredMoveConstructor() && hasMoveConstructor() &&
+           !data().DefaultedMoveConstructorIsDeleted;
   }
   /// \brief \c true if we know for sure that this class has a single,
   /// accessible, unambiguous move assignment operator that is not deleted.
   bool hasSimpleMoveAssignment() const {
-    return !hasUserDeclaredMoveAssignment() && hasMoveAssignment();
+    return !hasUserDeclaredMoveAssignment() && hasMoveAssignment() &&
+           !data().DefaultedMoveAssignmentIsDeleted;
   }
   /// \brief \c true if we know for sure that this class has an accessible
   /// destructor that is not deleted.
@@ -784,22 +798,22 @@ public:
            !(data().DeclaredSpecialMembers & SMF_DefaultConstructor);
   }
 
-  /// hasUserDeclaredConstructor - Whether this class has any
-  /// user-declared constructors. When true, a default constructor
-  /// will not be implicitly declared.
+  /// \brief Determine whether this class has any user-declared constructors.
+  ///
+  /// When true, a default constructor will not be implicitly declared.
   bool hasUserDeclaredConstructor() const {
     return data().UserDeclaredConstructor;
   }
 
-  /// hasUserProvidedDefaultconstructor - Whether this class has a
-  /// user-provided default constructor per C++0x.
+  /// \brief Whether this class has a user-provided default constructor
+  /// per C++11.
   bool hasUserProvidedDefaultConstructor() const {
     return data().UserProvidedDefaultConstructor;
   }
 
-  /// hasUserDeclaredCopyConstructor - Whether this class has a
-  /// user-declared copy constructor. When false, a copy constructor
-  /// will be implicitly declared.
+  /// \brief Determine whether this class has a user-declared copy constructor.
+  ///
+  /// When false, a copy constructor will be implicitly declared.
   bool hasUserDeclaredCopyConstructor() const {
     return data().UserDeclaredSpecialMembers & SMF_CopyConstructor;
   }
@@ -830,9 +844,11 @@ public:
             implicitCopyConstructorHasConstParam());
   }
 
-  /// hasUserDeclaredMoveOperation - Whether this class has a user-
-  /// declared move constructor or assignment operator. When false, a
-  /// move constructor and assignment operator may be implicitly declared.
+  /// \brief Whether this class has a user-declared move constructor or
+  /// assignment operator.
+  ///
+  /// When false, a move constructor and assignment operator may be
+  /// implicitly declared.
   bool hasUserDeclaredMoveOperation() const {
     return data().UserDeclaredSpecialMembers &
              (SMF_MoveConstructor | SMF_MoveAssignment);
@@ -850,28 +866,23 @@ public:
            needsImplicitMoveConstructor();
   }
 
-  /// \brief Determine whether implicit move constructor generation for this
-  /// class has failed before.
-  bool hasFailedImplicitMoveConstructor() const {
-    return data().FailedImplicitMoveConstructor;
-  }
-
-  /// \brief Set whether implicit move constructor generation for this class
-  /// has failed before.
-  void setFailedImplicitMoveConstructor(bool Failed = true) {
-    data().FailedImplicitMoveConstructor = Failed;
+  /// \brief Set that we attempted to declare an implicitly move
+  /// constructor, but overload resolution failed so we deleted it.
+  void setImplicitMoveConstructorIsDeleted() {
+    assert((data().DefaultedMoveConstructorIsDeleted ||
+            needsOverloadResolutionForMoveConstructor()) &&
+           "move constructor should not be deleted");
+    data().DefaultedMoveConstructorIsDeleted = true;
   }
 
   /// \brief Determine whether this class should get an implicit move
   /// constructor or if any existing special member function inhibits this.
   bool needsImplicitMoveConstructor() const {
-    return !hasFailedImplicitMoveConstructor() &&
-           !(data().DeclaredSpecialMembers & SMF_MoveConstructor) &&
+    return !(data().DeclaredSpecialMembers & SMF_MoveConstructor) &&
            !hasUserDeclaredCopyConstructor() &&
            !hasUserDeclaredCopyAssignment() &&
            !hasUserDeclaredMoveAssignment() &&
-           !hasUserDeclaredDestructor() &&
-           !data().DefaultedMoveConstructorIsDeleted;
+           !hasUserDeclaredDestructor();
   }
 
   /// \brief Determine whether we need to eagerly declare a defaulted move
@@ -880,9 +891,10 @@ public:
     return data().NeedOverloadResolutionForMoveConstructor;
   }
 
-  /// hasUserDeclaredCopyAssignment - Whether this class has a
-  /// user-declared copy assignment operator. When false, a copy
-  /// assigment operator will be implicitly declared.
+  /// \brief Determine whether this class has a user-declared copy assignment
+  /// operator.
+  ///
+  /// When false, a copy assigment operator will be implicitly declared.
   bool hasUserDeclaredCopyAssignment() const {
     return data().UserDeclaredSpecialMembers & SMF_CopyAssignment;
   }
@@ -907,7 +919,7 @@ public:
 
   /// \brief Determine whether this class has a copy assignment operator with
   /// a parameter type which is a reference to a const-qualified type or is not
-  /// a reference..
+  /// a reference.
   bool hasCopyAssignmentWithConstParam() const {
     return data().HasDeclaredCopyAssignmentWithConstParam ||
            (needsImplicitCopyAssignment() &&
@@ -926,29 +938,24 @@ public:
            needsImplicitMoveAssignment();
   }
 
-  /// \brief Determine whether implicit move assignment generation for this
-  /// class has failed before.
-  bool hasFailedImplicitMoveAssignment() const {
-    return data().FailedImplicitMoveAssignment;
-  }
-
-  /// \brief Set whether implicit move assignment generation for this class
-  /// has failed before.
-  void setFailedImplicitMoveAssignment(bool Failed = true) {
-    data().FailedImplicitMoveAssignment = Failed;
+  /// \brief Set that we attempted to declare an implicit move assignment
+  /// operator, but overload resolution failed so we deleted it.
+  void setImplicitMoveAssignmentIsDeleted() {
+    assert((data().DefaultedMoveAssignmentIsDeleted ||
+            needsOverloadResolutionForMoveAssignment()) &&
+           "move assignment should not be deleted");
+    data().DefaultedMoveAssignmentIsDeleted = true;
   }
 
   /// \brief Determine whether this class should get an implicit move
   /// assignment operator or if any existing special member function inhibits
   /// this.
   bool needsImplicitMoveAssignment() const {
-    return !hasFailedImplicitMoveAssignment() &&
-           !(data().DeclaredSpecialMembers & SMF_MoveAssignment) &&
+    return !(data().DeclaredSpecialMembers & SMF_MoveAssignment) &&
            !hasUserDeclaredCopyConstructor() &&
            !hasUserDeclaredCopyAssignment() &&
            !hasUserDeclaredMoveConstructor() &&
-           !hasUserDeclaredDestructor() &&
-           !data().DefaultedMoveAssignmentIsDeleted;
+           !hasUserDeclaredDestructor();
   }
 
   /// \brief Determine whether we need to eagerly declare a move assignment
@@ -957,9 +964,9 @@ public:
     return data().NeedOverloadResolutionForMoveAssignment;
   }
 
-  /// hasUserDeclaredDestructor - Whether this class has a
-  /// user-declared destructor. When false, a destructor will be
-  /// implicitly declared.
+  /// \brief Determine whether this class has a user-declared destructor.
+  ///
+  /// When false, a destructor will be implicitly declared.
   bool hasUserDeclaredDestructor() const {
     return data().UserDeclaredSpecialMembers & SMF_Destructor;
   }
@@ -979,15 +986,42 @@ public:
   /// \brief Determine whether this class describes a lambda function object.
   bool isLambda() const { return hasDefinition() && data().IsLambda; }
 
+  /// \brief Determine whether this class describes a generic 
+  /// lambda function object (i.e. function call operator is
+  /// a template). 
+  bool isGenericLambda() const; 
+
+  /// \brief Retrieve the lambda call operator of the closure type
+  /// if this is a closure type.
+  CXXMethodDecl *getLambdaCallOperator() const; 
+
+  /// \brief Retrieve the lambda static invoker, the address of which
+  /// is returned by the conversion operator, and the body of which
+  /// is forwarded to the lambda call operator. 
+  CXXMethodDecl *getLambdaStaticInvoker() const; 
+
+  /// \brief Retrieve the generic lambda's template parameter list.
+  /// Returns null if the class does not represent a lambda or a generic 
+  /// lambda.
+  TemplateParameterList *getGenericLambdaTemplateParameterList() const;
+
+  LambdaCaptureDefault getLambdaCaptureDefault() const {
+    assert(isLambda());
+    return static_cast<LambdaCaptureDefault>(getLambdaData().CaptureDefault);
+  }
+
   /// \brief For a closure type, retrieve the mapping from captured
-  /// variables and this to the non-static data members that store the
+  /// variables and \c this to the non-static data members that store the
   /// values or references of the captures.
   ///
   /// \param Captures Will be populated with the mapping from captured
   /// variables to the corresponding fields.
   ///
   /// \param ThisCapture Will be set to the field declaration for the
-  /// 'this' capture.
+  /// \c this capture.
+  ///
+  /// \note No entries will be added for init-captures, as they do not capture
+  /// variables.
   void getCaptureFields(llvm::DenseMap<const VarDecl *, FieldDecl *> &Captures,
                         FieldDecl *&ThisCapture) const;
 
@@ -1001,10 +1035,10 @@ public:
 
   typedef UnresolvedSetIterator conversion_iterator;
   conversion_iterator conversion_begin() const {
-    return data().Conversions.begin();
+    return data().Conversions.get(getASTContext()).begin();
   }
   conversion_iterator conversion_end() const {
-    return data().Conversions.end();
+    return data().Conversions.get(getASTContext()).end();
   }
 
   /// Removes a conversion function from this class.  The conversion
@@ -1012,38 +1046,39 @@ public:
   /// this class must currently be in the process of being defined.
   void removeConversion(const NamedDecl *Old);
 
-  /// getVisibleConversionFunctions - get all conversion functions visible
-  /// in current class; including conversion function templates.
+  /// \brief Get all conversion functions visible in current class,
+  /// including conversion function templates.
   std::pair<conversion_iterator, conversion_iterator>
     getVisibleConversionFunctions();
 
-  /// isAggregate - Whether this class is an aggregate (C++
-  /// [dcl.init.aggr]), which is a class with no user-declared
-  /// constructors, no private or protected non-static data members,
-  /// no base classes, and no virtual functions (C++ [dcl.init.aggr]p1).
+  /// Determine whether this class is an aggregate (C++ [dcl.init.aggr]),
+  /// which is a class with no user-declared constructors, no private
+  /// or protected non-static data members, no base classes, and no virtual
+  /// functions (C++ [dcl.init.aggr]p1).
   bool isAggregate() const { return data().Aggregate; }
 
-  /// hasInClassInitializer - Whether this class has any in-class initializers
+  /// \brief Whether this class has any in-class initializers
   /// for non-static data members.
   bool hasInClassInitializer() const { return data().HasInClassInitializer; }
 
   /// \brief Whether this class or any of its subobjects has any members of
-  /// reference type which would make value-initialization ill-formed, per
-  /// C++03 [dcl.init]p5:
-  ///  -- if T is a non-union class type without a user-declared constructor,
-  ///     then every non-static data member and base-class component of T is
-  ///     value-initialized
-  /// [...]
-  /// A program that calls for [...] value-initialization of an entity of
-  /// reference type is ill-formed.
+  /// reference type which would make value-initialization ill-formed.
+  ///
+  /// Per C++03 [dcl.init]p5:
+  ///  - if T is a non-union class type without a user-declared constructor,
+  ///    then every non-static data member and base-class component of T is
+  ///    value-initialized [...] A program that calls for [...]
+  ///    value-initialization of an entity of reference type is ill-formed.
   bool hasUninitializedReferenceMember() const {
     return !isUnion() && !hasUserDeclaredConstructor() &&
            data().HasUninitializedReferenceMember;
   }
 
-  /// isPOD - Whether this class is a POD-type (C++ [class]p4), which is a class
-  /// that is an aggregate that has no non-static non-POD data members, no
-  /// reference data members, no user-defined copy assignment operator and no
+  /// \brief Whether this class is a POD-type (C++ [class]p4)
+  ///
+  /// For purposes of this function a class is POD if it is an aggregate
+  /// that has no non-static non-POD data members, no reference data
+  /// members, no user-defined copy assignment operator and no
   /// user-defined destructor.
   ///
   /// Note that this is the C++ TR1 definition of POD.
@@ -1053,26 +1088,33 @@ public:
   /// it contains only public fields, no bases, tag kind is not 'class', etc.
   bool isCLike() const;
 
-  /// isEmpty - Whether this class is empty (C++0x [meta.unary.prop]), which
-  /// means it has a virtual function, virtual base, data member (other than
-  /// 0-width bit-field) or inherits from a non-empty class. Does NOT include
-  /// a check for union-ness.
+  /// \brief Determine whether this is an empty class in the sense of
+  /// (C++11 [meta.unary.prop]).
+  ///
+  /// A non-union class is empty iff it has a virtual function, virtual base,
+  /// data member (other than 0-width bit-field) or inherits from a non-empty
+  /// class.
+  ///
+  /// \note This does NOT include a check for union-ness.
   bool isEmpty() const { return data().Empty; }
 
-  /// isPolymorphic - Whether this class is polymorphic (C++ [class.virtual]),
+  /// Whether this class is polymorphic (C++ [class.virtual]),
   /// which means that the class contains or inherits a virtual function.
   bool isPolymorphic() const { return data().Polymorphic; }
 
-  /// isAbstract - Whether this class is abstract (C++ [class.abstract]),
-  /// which means that the class contains or inherits a pure virtual function.
+  /// \brief Determine whether this class has a pure virtual function.
+  ///
+  /// The class is is abstract per (C++ [class.abstract]p2) if it declares
+  /// a pure virtual function or inherits a pure virtual function that is
+  /// not overridden.
   bool isAbstract() const { return data().Abstract; }
 
-  /// isStandardLayout - Whether this class has standard layout
+  /// \brief Determine whether this class has standard layout per 
   /// (C++ [class]p7)
   bool isStandardLayout() const { return data().IsStandardLayout; }
 
-  /// \brief Whether this class, or any of its class subobjects, contains a
-  /// mutable field.
+  /// \brief Determine whether this class, or any of its class subobjects,
+  /// contains a mutable field.
   bool hasMutableFields() const { return data().HasMutableFields; }
 
   /// \brief Determine whether this class has a trivial default constructor
@@ -1180,47 +1222,49 @@ public:
     return !(data().HasTrivialSpecialMembers & SMF_Destructor);
   }
 
-  // hasIrrelevantDestructor - Whether this class has a destructor which has no
-  // semantic effect. Any such destructor will be trivial, public, defaulted
-  // and not deleted, and will call only irrelevant destructors.
+  /// \brief Determine whether this class has a destructor which has no
+  /// semantic effect.
+  ///
+  /// Any such destructor will be trivial, public, defaulted and not deleted,
+  /// and will call only irrelevant destructors.
   bool hasIrrelevantDestructor() const {
     return data().HasIrrelevantDestructor;
   }
 
-  // hasNonLiteralTypeFieldsOrBases - Whether this class has a non-literal or
-  // volatile type non-static data member or base class.
+  /// \brief Determine whether this class has a non-literal or/ volatile type
+  /// non-static data member or base class.
   bool hasNonLiteralTypeFieldsOrBases() const {
     return data().HasNonLiteralTypeFieldsOrBases;
   }
 
-  // isTriviallyCopyable - Whether this class is considered trivially copyable
-  // (C++0x [class]p6).
+  /// \brief Determine whether this class is considered trivially copyable per
+  /// (C++11 [class]p6).
   bool isTriviallyCopyable() const;
 
-  // isTrivial - Whether this class is considered trivial
-  //
-  // C++0x [class]p6
-  //    A trivial class is a class that has a trivial default constructor and
-  //    is trivially copiable.
+  /// \brief Determine whether this class is considered trivial.
+  ///
+  /// C++11 [class]p6:
+  ///    "A trivial class is a class that has a trivial default constructor and
+  ///    is trivially copiable."
   bool isTrivial() const {
     return isTriviallyCopyable() && hasTrivialDefaultConstructor();
   }
 
-  // isLiteral - Whether this class is a literal type.
-  //
-  // C++11 [basic.types]p10
-  //   A class type that has all the following properties:
-  //     -- it has a trivial destructor
-  //     -- every constructor call and full-expression in the
-  //        brace-or-equal-intializers for non-static data members (if any) is
-  //        a constant expression.
-  //     -- it is an aggregate type or has at least one constexpr constructor or
-  //        constructor template that is not a copy or move constructor, and
-  //     -- all of its non-static data members and base classes are of literal
-  //        types
-  //
-  // We resolve DR1361 by ignoring the second bullet. We resolve DR1452 by
-  // treating types with trivial default constructors as literal types.
+  /// \brief Determine whether this class is a literal type.
+  ///
+  /// C++11 [basic.types]p10:
+  ///   A class type that has all the following properties:
+  ///     - it has a trivial destructor
+  ///     - every constructor call and full-expression in the
+  ///       brace-or-equal-intializers for non-static data members (if any) is
+  ///       a constant expression.
+  ///     - it is an aggregate type or has at least one constexpr constructor
+  ///       or constructor template that is not a copy or move constructor, and
+  ///     - all of its non-static data members and base classes are of literal
+  ///       types
+  ///
+  /// We resolve DR1361 by ignoring the second bullet. We resolve DR1452 by
+  /// treating types with trivial default constructors as literal types.
   bool isLiteral() const {
     return hasTrivialDestructor() &&
            (isAggregate() || hasConstexprNonCopyMoveConstructor() ||
@@ -1231,15 +1275,15 @@ public:
   /// \brief If this record is an instantiation of a member class,
   /// retrieves the member class from which it was instantiated.
   ///
-  /// This routine will return non-NULL for (non-templated) member
+  /// This routine will return non-null for (non-templated) member
   /// classes of class templates. For example, given:
   ///
-  /// @code
+  /// \code
   /// template<typename T>
   /// struct X {
   ///   struct A { };
   /// };
-  /// @endcode
+  /// \endcode
   ///
   /// The declaration for X<int>::A is a (non-templated) CXXRecordDecl
   /// whose parent is the class template specialization X<int>. For
@@ -1257,7 +1301,7 @@ public:
   }
 
   /// \brief Specify that this record is an instantiation of the
-  /// member class RD.
+  /// member class \p RD.
   void setInstantiationOfMemberClass(CXXRecordDecl *RD,
                                      TemplateSpecializationKind TSK);
 
@@ -1288,10 +1332,10 @@ public:
   /// \brief Set the kind of specialization or template instantiation this is.
   void setTemplateSpecializationKind(TemplateSpecializationKind TSK);
 
-  /// getDestructor - Returns the destructor decl for this class.
+  /// \brief Returns the destructor decl for this class.
   CXXDestructorDecl *getDestructor() const;
 
-  /// isLocalClass - If the class is a local class [class.local], returns
+  /// \brief If the class is a local class [class.local], returns
   /// the enclosing function declaration.
   const FunctionDecl *isLocalClass() const {
     if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(getDeclContext()))
@@ -1300,6 +1344,11 @@ public:
     return dyn_cast<FunctionDecl>(getDeclContext());
   }
 
+  FunctionDecl *isLocalClass() {
+    return const_cast<FunctionDecl*>(
+        const_cast<const CXXRecordDecl*>(this)->isLocalClass());
+  }
+
   /// \brief Determine whether this dependent class is a current instantiation,
   /// when viewed from within the given context.
   bool isCurrentInstantiation(const DeclContext *CurContext) const;
@@ -1328,7 +1377,7 @@ public:
   /// \param Paths will contain the paths taken from the current class to the
   /// given \p Base class.
   ///
-  /// \returns true if this class is derived from Base, false otherwise.
+  /// \returns true if this class is derived from \p Base, false otherwise.
   ///
   /// \todo add a separate paramaeter to configure IsDerivedFrom, rather than
   /// tangling input and output in \p Paths
@@ -1367,6 +1416,13 @@ public:
   /// The class itself does not count as a base class.  This routine
   /// returns false if the class has non-computable base classes.
   ///
+  /// \param BaseMatches Callback invoked for each (direct or indirect) base
+  /// class of this type, or if \p AllowShortCircuit is true then until a call
+  /// returns false.
+  ///
+  /// \param UserData Passed as the second argument of every call to
+  /// \p BaseMatches.
+  ///
   /// \param AllowShortCircuit if false, forces the callback to be called
   /// for every base class, even if a dependent or non-matching base was
   /// found.
@@ -1471,12 +1527,12 @@ public:
   /// \brief Get the indirect primary bases for this class.
   void getIndirectPrimaryBases(CXXIndirectPrimaryBaseSet& Bases) const;
 
-  /// viewInheritance - Renders and displays an inheritance diagram
+  /// Renders and displays an inheritance diagram
   /// for this C++ class and all of its base classes (transitively) using
   /// GraphViz.
   void viewInheritance(ASTContext& Context) const;
 
-  /// MergeAccess - Calculates the access of a decl that is reached
+  /// \brief Calculates the access of a decl that is reached
   /// along a path.
   static AccessSpecifier MergeAccess(AccessSpecifier PathAccess,
                                      AccessSpecifier DeclAccess) {
@@ -1575,8 +1631,10 @@ public:
   friend class ASTWriter;
 };
 
-/// CXXMethodDecl - Represents a static or instance method of a
-/// struct/union/class.
+/// \brief Represents a static or instance method of a struct/union/class.
+///
+/// In the terminology of the C++ Standard, these are the (static and
+/// non-static) member functions, whether virtual or not.
 class CXXMethodDecl : public FunctionDecl {
   virtual void anchor();
 protected:
@@ -1606,6 +1664,18 @@ public:
   bool isStatic() const;
   bool isInstance() const { return !isStatic(); }
 
+  /// Returns true if the given operator is implicitly static in a record
+  /// context.
+  static bool isStaticOverloadedOperator(OverloadedOperatorKind OOK) {
+    // [class.free]p1:
+    // Any allocation function for a class T is a static member
+    // (even if not explicitly declared static).
+    // [class.free]p6 Any deallocation function for a class X is a static member
+    // (even if not explicitly declared static).
+    return OOK == OO_New || OOK == OO_Array_New || OOK == OO_Delete ||
+           OOK == OO_Array_Delete;
+  }
+
   bool isConst() const { return getType()->castAs<FunctionType>()->isConst(); }
   bool isVolatile() const { return getType()->castAs<FunctionType>()->isVolatile(); }
 
@@ -1633,14 +1703,22 @@ public:
   /// \brief Determine whether this is a move assignment operator.
   bool isMoveAssignmentOperator() const;
 
-  const CXXMethodDecl *getCanonicalDecl() const {
-    return cast<CXXMethodDecl>(FunctionDecl::getCanonicalDecl());
-  }
   CXXMethodDecl *getCanonicalDecl() {
     return cast<CXXMethodDecl>(FunctionDecl::getCanonicalDecl());
   }
+  const CXXMethodDecl *getCanonicalDecl() const {
+    return const_cast<CXXMethodDecl*>(this)->getCanonicalDecl();
+  }
+
+  CXXMethodDecl *getMostRecentDecl() {
+    return cast<CXXMethodDecl>(
+            static_cast<FunctionDecl *>(this)->getMostRecentDecl());
+  }
+  const CXXMethodDecl *getMostRecentDecl() const {
+    return const_cast<CXXMethodDecl*>(this)->getMostRecentDecl();
+  }
 
-  /// isUserProvided - True if this method is user-declared and was not
+  /// True if this method is user-declared and was not
   /// deleted or defaulted on its first declaration.
   bool isUserProvided() const {
     return !(isDeleted() || getCanonicalDecl()->isDefaulted());
@@ -1655,21 +1733,22 @@ public:
   method_iterator end_overridden_methods() const;
   unsigned size_overridden_methods() const;
 
-  /// getParent - Returns the parent of this method declaration, which
+  /// Returns the parent of this method declaration, which
   /// is the class in which this method is defined.
   const CXXRecordDecl *getParent() const {
     return cast<CXXRecordDecl>(FunctionDecl::getParent());
   }
 
-  /// getParent - Returns the parent of this method declaration, which
+  /// Returns the parent of this method declaration, which
   /// is the class in which this method is defined.
   CXXRecordDecl *getParent() {
     return const_cast<CXXRecordDecl *>(
              cast<CXXRecordDecl>(FunctionDecl::getParent()));
   }
 
-  /// getThisType - Returns the type of 'this' pointer.
-  /// Should only be called for instance methods.
+  /// \brief Returns the type of the \c this pointer.
+  ///
+  /// Should only be called for instance (i.e., non-static) methods.
   QualType getThisType(ASTContext &C) const;
 
   unsigned getTypeQualifiers() const {
@@ -1702,11 +1781,11 @@ public:
   /// or clone the function call operator.
   bool isLambdaStaticInvoker() const;
 
-  /// \brief Find the method in RD that corresponds to this one.
+  /// \brief Find the method in \p RD that corresponds to this one.
   ///
-  /// Find if RD or one of the classes it inherits from override this method.
-  /// If so, return it. RD is assumed to be a subclass of the class defining
-  /// this method (or be the class itself), unless MayBeBase is set to true.
+  /// Find if \p RD or one of the classes it inherits from override this method.
+  /// If so, return it. \p RD is assumed to be a subclass of the class defining
+  /// this method (or be the class itself), unless \p MayBeBase is set to true.
   CXXMethodDecl *
   getCorrespondingMethodInClass(const CXXRecordDecl *RD,
                                 bool MayBeBase = false);
@@ -1725,20 +1804,21 @@ public:
   }
 };
 
-/// CXXCtorInitializer - Represents a C++ base or member
-/// initializer, which is part of a constructor initializer that
+/// \brief Represents a C++ base or member initializer.
+///
+/// This is part of a constructor initializer that
 /// initializes one non-static member variable or one base class. For
 /// example, in the following, both 'A(a)' and 'f(3.14159)' are member
 /// initializers:
 ///
-/// @code
+/// \code
 /// class A { };
 /// class B : public A {
 ///   float f;
 /// public:
 ///   B(A& a) : A(a), f(3.14159) { }
 /// };
-/// @endcode
+/// \endcode
 class CXXCtorInitializer {
   /// \brief Either the base class name/delegating constructor type (stored as
   /// a TypeSourceInfo*), an normal field (FieldDecl), or an anonymous field
@@ -1747,7 +1827,9 @@ class CXXCtorInitializer {
     Initializee;
 
   /// \brief The source location for the field name or, for a base initializer
-  /// pack expansion, the location of the ellipsis. In the case of a delegating
+  /// pack expansion, the location of the ellipsis.
+  ///
+  /// In the case of a delegating
   /// constructor, it will still include the type's source location as the
   /// Initializee points to the CXXConstructorDecl (to allow loop detection).
   SourceLocation MemberOrEllipsisLocation;
@@ -1756,29 +1838,28 @@ class CXXCtorInitializer {
   /// end up constructing an object (when multiple arguments are involved).
   Stmt *Init;
 
-  /// LParenLoc - Location of the left paren of the ctor-initializer.
+  /// \brief Location of the left paren of the ctor-initializer.
   SourceLocation LParenLoc;
 
-  /// RParenLoc - Location of the right paren of the ctor-initializer.
+  /// \brief Location of the right paren of the ctor-initializer.
   SourceLocation RParenLoc;
 
   /// \brief If the initializee is a type, whether that type makes this
   /// a delegating initialization.
   bool IsDelegating : 1;
 
-  /// IsVirtual - If the initializer is a base initializer, this keeps track
+  /// \brief If the initializer is a base initializer, this keeps track
   /// of whether the base is virtual or not.
   bool IsVirtual : 1;
 
-  /// IsWritten - Whether or not the initializer is explicitly written
+  /// \brief Whether or not the initializer is explicitly written
   /// in the sources.
   bool IsWritten : 1;
 
-  /// SourceOrderOrNumArrayIndices - If IsWritten is true, then this
-  /// number keeps track of the textual order of this initializer in the
-  /// original sources, counting from 0; otherwise, if IsWritten is false,
-  /// it stores the number of array index variables stored after this
-  /// object in memory.
+  /// If IsWritten is true, then this number keeps track of the textual order
+  /// of this initializer in the original sources, counting from 0; otherwise,
+  /// it stores the number of array index variables stored after this object
+  /// in memory.
   unsigned SourceOrderOrNumArrayIndices : 13;
 
   CXXCtorInitializer(ASTContext &Context, FieldDecl *Member,
@@ -1786,25 +1867,25 @@ class CXXCtorInitializer {
                      SourceLocation R, VarDecl **Indices, unsigned NumIndices);
 
 public:
-  /// CXXCtorInitializer - Creates a new base-class initializer.
+  /// \brief Creates a new base-class initializer.
   explicit
   CXXCtorInitializer(ASTContext &Context, TypeSourceInfo *TInfo, bool IsVirtual,
                      SourceLocation L, Expr *Init, SourceLocation R,
                      SourceLocation EllipsisLoc);
 
-  /// CXXCtorInitializer - Creates a new member initializer.
+  /// \brief Creates a new member initializer.
   explicit
   CXXCtorInitializer(ASTContext &Context, FieldDecl *Member,
                      SourceLocation MemberLoc, SourceLocation L, Expr *Init,
                      SourceLocation R);
 
-  /// CXXCtorInitializer - Creates a new anonymous field initializer.
+  /// \brief Creates a new anonymous field initializer.
   explicit
   CXXCtorInitializer(ASTContext &Context, IndirectFieldDecl *Member,
                      SourceLocation MemberLoc, SourceLocation L, Expr *Init,
                      SourceLocation R);
 
-  /// CXXCtorInitializer - Creates a new delegating Initializer.
+  /// \brief Creates a new delegating initializer.
   explicit
   CXXCtorInitializer(ASTContext &Context, TypeSourceInfo *TInfo,
                      SourceLocation L, Expr *Init, SourceLocation R);
@@ -1816,14 +1897,13 @@ public:
                                     Expr *Init, SourceLocation R,
                                     VarDecl **Indices, unsigned NumIndices);
 
-  /// isBaseInitializer - Returns true when this initializer is
-  /// initializing a base class.
+  /// \brief Determine whether this initializer is initializing a base class.
   bool isBaseInitializer() const {
     return Initializee.is<TypeSourceInfo*>() && !IsDelegating;
   }
 
-  /// isMemberInitializer - Returns true when this initializer is
-  /// initializing a non-static data member.
+  /// \brief Determine whether this initializer is initializing a non-static
+  /// data member.
   bool isMemberInitializer() const { return Initializee.is<FieldDecl*>(); }
 
   bool isAnyMemberInitializer() const {
@@ -1834,15 +1914,18 @@ public:
     return Initializee.is<IndirectFieldDecl*>();
   }
 
-  /// isInClassMemberInitializer - Returns true when this initializer is an
-  /// implicit ctor initializer generated for a field with an initializer
-  /// defined on the member declaration.
+  /// \brief Determine whether this initializer is an implicit initializer
+  /// generated for a field with an initializer defined on the member
+  /// declaration.
+  ///
+  /// In-class member initializers (also known as "non-static data member
+  /// initializations", NSDMIs) were introduced in C++11.
   bool isInClassMemberInitializer() const {
     return isa<CXXDefaultInitExpr>(Init);
   }
 
-  /// isDelegatingInitializer - Returns true when this initializer is creating
-  /// a delegating constructor.
+  /// \brief Determine whether this initializer is creating a delegating
+  /// constructor.
   bool isDelegatingInitializer() const {
     return Initializee.is<TypeSourceInfo*>() && IsDelegating;
   }
@@ -1864,7 +1947,7 @@ public:
   TypeLoc getBaseClassLoc() const;
 
   /// If this is a base class initializer, returns the type of the base class.
-  /// Otherwise, returns NULL.
+  /// Otherwise, returns null.
   const Type *getBaseClass() const;
 
   /// Returns whether the base is virtual or not.
@@ -1880,9 +1963,8 @@ public:
     return Initializee.dyn_cast<TypeSourceInfo *>();
   }
 
-  /// getMember - If this is a member initializer, returns the
-  /// declaration of the non-static data member being
-  /// initialized. Otherwise, returns NULL.
+  /// \brief If this is a member initializer, returns the declaration of the
+  /// non-static data member being initialized. Otherwise, returns null.
   FieldDecl *getMember() const {
     if (isMemberInitializer())
       return Initializee.get<FieldDecl*>();
@@ -1912,7 +1994,7 @@ public:
   /// \brief Determine the source range covering the entire initializer.
   SourceRange getSourceRange() const LLVM_READONLY;
 
-  /// isWritten - Returns true if this initializer is explicitly written
+  /// \brief Determine whether this initializer is explicitly written
   /// in the source code.
   bool isWritten() const { return IsWritten; }
 
@@ -1922,9 +2004,13 @@ public:
     return IsWritten ? static_cast<int>(SourceOrderOrNumArrayIndices) : -1;
   }
 
-  /// \brief Set the source order of this initializer. This method can only
-  /// be called once for each initializer; it cannot be called on an
-  /// initializer having a positive number of (implicit) array indices.
+  /// \brief Set the source order of this initializer.
+  ///
+  /// This can only be called once for each initializer; it cannot be called
+  /// on an initializer having a positive number of (implicit) array indices.
+  ///
+  /// This assumes that the initialzier was written in the source code, and
+  /// ensures that isWritten() returns true.
   void setSourceOrder(int pos) {
     assert(!IsWritten &&
            "calling twice setSourceOrder() on the same initializer");
@@ -1969,34 +2055,28 @@ public:
   Expr *getInit() const { return static_cast<Expr*>(Init); }
 };
 
-/// CXXConstructorDecl - Represents a C++ constructor within a
-/// class. For example:
+/// \brief Represents a C++ constructor within a class.
 ///
-/// @code
+/// For example:
+///
+/// \code
 /// class X {
 /// public:
 ///   explicit X(int); // represented by a CXXConstructorDecl.
 /// };
-/// @endcode
+/// \endcode
 class CXXConstructorDecl : public CXXMethodDecl {
   virtual void anchor();
-  /// IsExplicitSpecified - Whether this constructor declaration has the
-  /// 'explicit' keyword specified.
+  /// \brief Whether this constructor declaration has the \c explicit keyword
+  /// specified.
   bool IsExplicitSpecified : 1;
 
-  /// ImplicitlyDefined - Whether this constructor was implicitly
-  /// defined by the compiler. When false, the constructor was defined
-  /// by the user. In C++03, this flag will have the same value as
-  /// Implicit. In C++0x, however, a constructor that is
-  /// explicitly defaulted (i.e., defined with " = default") will have
-  /// @c !Implicit && ImplicitlyDefined.
-  bool ImplicitlyDefined : 1;
-
-  /// Support for base and member initializers.
-  /// CtorInitializers - The arguments used to initialize the base
-  /// or member.
+  /// \name Support for base and member initializers.
+  /// \{
+  /// \brief The arguments used to initialize the base or member.
   CXXCtorInitializer **CtorInitializers;
   unsigned NumCtorInitializers;
+  /// \}
 
   CXXConstructorDecl(CXXRecordDecl *RD, SourceLocation StartLoc,
                      const DeclarationNameInfo &NameInfo,
@@ -2005,8 +2085,8 @@ class CXXConstructorDecl : public CXXMethodDecl {
                      bool isImplicitlyDeclared, bool isConstexpr)
     : CXXMethodDecl(CXXConstructor, RD, StartLoc, NameInfo, T, TInfo,
                     SC_None, isInline, isConstexpr, SourceLocation()),
-      IsExplicitSpecified(isExplicitSpecified), ImplicitlyDefined(false),
-      CtorInitializers(0), NumCtorInitializers(0) {
+      IsExplicitSpecified(isExplicitSpecified), CtorInitializers(0),
+      NumCtorInitializers(0) {
     setImplicit(isImplicitlyDeclared);
   }
 
@@ -2020,52 +2100,31 @@ public:
                                     bool isInline, bool isImplicitlyDeclared,
                                     bool isConstexpr);
 
-  /// isExplicitSpecified - Whether this constructor declaration has the
-  /// 'explicit' keyword specified.
+  /// \brief Determine whether this constructor declaration has the
+  /// \c explicit keyword specified.
   bool isExplicitSpecified() const { return IsExplicitSpecified; }
 
-  /// isExplicit - Whether this constructor was marked "explicit" or not.
+  /// \brief Determine whether this constructor was marked "explicit" or not.
   bool isExplicit() const {
-    return cast<CXXConstructorDecl>(getFirstDeclaration())
-      ->isExplicitSpecified();
-  }
-
-  /// isImplicitlyDefined - Whether this constructor was implicitly
-  /// defined. If false, then this constructor was defined by the
-  /// user. This operation can only be invoked if the constructor has
-  /// already been defined.
-  bool isImplicitlyDefined() const {
-    assert(isThisDeclarationADefinition() &&
-           "Can only get the implicit-definition flag once the "
-           "constructor has been defined");
-    return ImplicitlyDefined;
-  }
-
-  /// setImplicitlyDefined - Set whether this constructor was
-  /// implicitly defined or not.
-  void setImplicitlyDefined(bool ID) {
-    assert(isThisDeclarationADefinition() &&
-           "Can only set the implicit-definition flag once the constructor "
-           "has been defined");
-    ImplicitlyDefined = ID;
+    return cast<CXXConstructorDecl>(getFirstDecl())->isExplicitSpecified();
   }
 
-  /// init_iterator - Iterates through the member/base initializer list.
+  /// \brief Iterates through the member/base initializer list.
   typedef CXXCtorInitializer **init_iterator;
 
-  /// init_const_iterator - Iterates through the memberbase initializer list.
+  /// \brief Iterates through the member/base initializer list.
   typedef CXXCtorInitializer * const * init_const_iterator;
 
-  /// init_begin() - Retrieve an iterator to the first initializer.
+  /// \brief Retrieve an iterator to the first initializer.
   init_iterator       init_begin()       { return CtorInitializers; }
-  /// begin() - Retrieve an iterator to the first initializer.
+  /// \brief Retrieve an iterator to the first initializer.
   init_const_iterator init_begin() const { return CtorInitializers; }
 
-  /// init_end() - Retrieve an iterator past the last initializer.
+  /// \brief Retrieve an iterator past the last initializer.
   init_iterator       init_end()       {
     return CtorInitializers + NumCtorInitializers;
   }
-  /// end() - Retrieve an iterator past the last initializer.
+  /// \brief Retrieve an iterator past the last initializer.
   init_const_iterator init_end() const {
     return CtorInitializers + NumCtorInitializers;
   }
@@ -2088,8 +2147,8 @@ public:
     return init_const_reverse_iterator(init_begin());
   }
 
-  /// getNumArgs - Determine the number of arguments used to
-  /// initialize the member or base.
+  /// \brief Determine the number of arguments used to initialize the member
+  /// or base.
   unsigned getNumCtorInitializers() const {
       return NumCtorInitializers;
   }
@@ -2102,37 +2161,36 @@ public:
     CtorInitializers = initializers;
   }
 
-  /// isDelegatingConstructor - Whether this constructor is a
-  /// delegating constructor
+  /// \brief Determine whether this constructor is a delegating constructor.
   bool isDelegatingConstructor() const {
     return (getNumCtorInitializers() == 1) &&
       CtorInitializers[0]->isDelegatingInitializer();
   }
 
-  /// getTargetConstructor - When this constructor delegates to
-  /// another, retrieve the target
+  /// \brief When this constructor delegates to another, retrieve the target.
   CXXConstructorDecl *getTargetConstructor() const;
 
-  /// isDefaultConstructor - Whether this constructor is a default
+  /// Whether this constructor is a default
   /// constructor (C++ [class.ctor]p5), which can be used to
   /// default-initialize a class of this type.
   bool isDefaultConstructor() const;
 
-  /// isCopyConstructor - Whether this constructor is a copy
-  /// constructor (C++ [class.copy]p2, which can be used to copy the
-  /// class. @p TypeQuals will be set to the qualifiers on the
-  /// argument type. For example, @p TypeQuals would be set to @c
+  /// \brief Whether this constructor is a copy constructor (C++ [class.copy]p2,
+  /// which can be used to copy the class.
+  ///
+  /// \p TypeQuals will be set to the qualifiers on the
+  /// argument type. For example, \p TypeQuals would be set to \c
   /// Qualifiers::Const for the following copy constructor:
   ///
-  /// @code
+  /// \code
   /// class X {
   /// public:
   ///   X(const X&);
   /// };
-  /// @endcode
+  /// \endcode
   bool isCopyConstructor(unsigned &TypeQuals) const;
 
-  /// isCopyConstructor - Whether this constructor is a copy
+  /// Whether this constructor is a copy
   /// constructor (C++ [class.copy]p2, which can be used to copy the
   /// class.
   bool isCopyConstructor() const {
@@ -2166,7 +2224,7 @@ public:
     return isCopyOrMoveConstructor(Quals);
   }
 
-  /// isConvertingConstructor - Whether this constructor is a
+  /// Whether this constructor is a
   /// converting constructor (C++ [class.conv.ctor]), which can be
   /// used for user-defined conversions.
   bool isConvertingConstructor(bool AllowExplicit) const;
@@ -2197,24 +2255,18 @@ public:
   friend class ASTDeclWriter;
 };
 
-/// CXXDestructorDecl - Represents a C++ destructor within a
-/// class. For example:
+/// \brief Represents a C++ destructor within a class.
 ///
-/// @code
+/// For example:
+///
+/// \code
 /// class X {
 /// public:
 ///   ~X(); // represented by a CXXDestructorDecl.
 /// };
-/// @endcode
+/// \endcode
 class CXXDestructorDecl : public CXXMethodDecl {
   virtual void anchor();
-  /// ImplicitlyDefined - Whether this destructor was implicitly
-  /// defined by the compiler. When false, the destructor was defined
-  /// by the user. In C++03, this flag will have the same value as
-  /// Implicit. In C++0x, however, a destructor that is
-  /// explicitly defaulted (i.e., defined with " = default") will have
-  /// @c !Implicit && ImplicitlyDefined.
-  bool ImplicitlyDefined : 1;
 
   FunctionDecl *OperatorDelete;
 
@@ -2224,7 +2276,7 @@ class CXXDestructorDecl : public CXXMethodDecl {
                     bool isInline, bool isImplicitlyDeclared)
     : CXXMethodDecl(CXXDestructor, RD, StartLoc, NameInfo, T, TInfo,
                     SC_None, isInline, /*isConstexpr=*/false, SourceLocation()),
-      ImplicitlyDefined(false), OperatorDelete(0) {
+      OperatorDelete(0) {
     setImplicit(isImplicitlyDeclared);
   }
 
@@ -2237,26 +2289,6 @@ public:
                                    bool isImplicitlyDeclared);
   static CXXDestructorDecl *CreateDeserialized(ASTContext & C, unsigned ID);
 
-  /// isImplicitlyDefined - Whether this destructor was implicitly
-  /// defined. If false, then this destructor was defined by the
-  /// user. This operation can only be invoked if the destructor has
-  /// already been defined.
-  bool isImplicitlyDefined() const {
-    assert(isThisDeclarationADefinition() &&
-           "Can only get the implicit-definition flag once the destructor has "
-           "been defined");
-    return ImplicitlyDefined;
-  }
-
-  /// setImplicitlyDefined - Set whether this destructor was
-  /// implicitly defined or not.
-  void setImplicitlyDefined(bool ID) {
-    assert(isThisDeclarationADefinition() &&
-           "Can only set the implicit-definition flag once the destructor has "
-           "been defined");
-    ImplicitlyDefined = ID;
-  }
-
   void setOperatorDelete(FunctionDecl *OD) { OperatorDelete = OD; }
   const FunctionDecl *getOperatorDelete() const { return OperatorDelete; }
 
@@ -2268,19 +2300,20 @@ public:
   friend class ASTDeclWriter;
 };
 
-/// CXXConversionDecl - Represents a C++ conversion function within a
-/// class. For example:
+/// \brief Represents a C++ conversion function within a class.
+///
+/// For example:
 ///
-/// @code
+/// \code
 /// class X {
 /// public:
 ///   operator bool();
 /// };
-/// @endcode
+/// \endcode
 class CXXConversionDecl : public CXXMethodDecl {
   virtual void anchor();
-  /// IsExplicitSpecified - Whether this conversion function declaration is
-  /// marked "explicit", meaning that it can only be applied when the user
+  /// Whether this conversion function declaration is marked
+  /// "explicit", meaning that it can only be applied when the user
   /// explicitly wrote a cast. This is a C++0x feature.
   bool IsExplicitSpecified : 1;
 
@@ -2303,21 +2336,20 @@ public:
                                    SourceLocation EndLocation);
   static CXXConversionDecl *CreateDeserialized(ASTContext &C, unsigned ID);
 
-  /// IsExplicitSpecified - Whether this conversion function declaration is
-  /// marked "explicit", meaning that it can only be applied when the user
-  /// explicitly wrote a cast. This is a C++0x feature.
+  /// Whether this conversion function declaration is marked
+  /// "explicit", meaning that it can only be used for direct initialization
+  /// (including explitly written casts).  This is a C++11 feature.
   bool isExplicitSpecified() const { return IsExplicitSpecified; }
 
-  /// isExplicit - Whether this is an explicit conversion operator
-  /// (C++0x only). Explicit conversion operators are only considered
-  /// when the user has explicitly written a cast.
+  /// \brief Whether this is an explicit conversion operator (C++11 and later).
+  ///
+  /// Explicit conversion operators are only considered for direct
+  /// initialization, e.g., when the user has explicitly written a cast.
   bool isExplicit() const {
-    return cast<CXXConversionDecl>(getFirstDeclaration())
-      ->isExplicitSpecified();
+    return cast<CXXConversionDecl>(getFirstDecl())->isExplicitSpecified();
   }
 
-  /// getConversionType - Returns the type that this conversion
-  /// function is converting to.
+  /// \brief Returns the type that this conversion function is converting to.
   QualType getConversionType() const {
     return getType()->getAs<FunctionType>()->getResultType();
   }
@@ -2334,32 +2366,37 @@ public:
   friend class ASTDeclWriter;
 };
 
-/// LinkageSpecDecl - This represents a linkage specification.  For example:
-///   extern "C" void foo();
+/// \brief Represents a linkage specification. 
 ///
+/// For example:
+/// \code
+///   extern "C" void foo();
+/// \endcode
 class LinkageSpecDecl : public Decl, public DeclContext {
   virtual void anchor();
 public:
-  /// LanguageIDs - Used to represent the language in a linkage
-  /// specification.  The values are part of the serialization abi for
-  /// ASTs and cannot be changed without altering that abi.  To help
-  /// ensure a stable abi for this, we choose the DW_LANG_ encodings
+  /// \brief Represents the language in a linkage specification.
+  ///
+  /// The values are part of the serialization ABI for
+  /// ASTs and cannot be changed without altering that ABI.  To help
+  /// ensure a stable ABI for this, we choose the DW_LANG_ encodings
   /// from the dwarf standard.
   enum LanguageIDs {
     lang_c = /* DW_LANG_C */ 0x0002,
     lang_cxx = /* DW_LANG_C_plus_plus */ 0x0004
   };
 private:
-  /// Language - The language for this linkage specification.
+  /// \brief The language for this linkage specification.
   unsigned Language : 3;
-  /// True if this linkage spec has brances. This is needed so that hasBraces()
-  /// returns the correct result while the linkage spec body is being parsed.
-  /// Once RBraceLoc has been set this is not used, so it doesn't need to be
-  /// serialized.
+  /// \brief True if this linkage spec has braces.
+  ///
+  /// This is needed so that hasBraces() returns the correct result while the
+  /// linkage spec body is being parsed.  Once RBraceLoc has been set this is
+  /// not used, so it doesn't need to be serialized.
   unsigned HasBraces : 1;
-  /// ExternLoc - The source location for the extern keyword.
+  /// \brief The source location for the extern keyword.
   SourceLocation ExternLoc;
-  /// RBraceLoc - The source location for the right brace (if valid).
+  /// \brief The source location for the right brace (if valid).
   SourceLocation RBraceLoc;
 
   LinkageSpecDecl(DeclContext *DC, SourceLocation ExternLoc,
@@ -2417,34 +2454,38 @@ public:
   }
 };
 
-/// UsingDirectiveDecl - Represents C++ using-directive. For example:
+/// \brief Represents C++ using-directive.
 ///
+/// For example:
+/// \code
 ///    using namespace std;
+/// \endcode
 ///
-// NB: UsingDirectiveDecl should be Decl not NamedDecl, but we provide
-// artificial names for all using-directives in order to store
-// them in DeclContext effectively.
+/// \note UsingDirectiveDecl should be Decl not NamedDecl, but we provide
+/// artificial names for all using-directives in order to store
+/// them in DeclContext effectively.
 class UsingDirectiveDecl : public NamedDecl {
   virtual void anchor();
-  /// \brief The location of the "using" keyword.
+  /// \brief The location of the \c using keyword.
   SourceLocation UsingLoc;
 
-  /// SourceLocation - Location of 'namespace' token.
+  /// \brief The location of the \c namespace keyword.
   SourceLocation NamespaceLoc;
 
   /// \brief The nested-name-specifier that precedes the namespace.
   NestedNameSpecifierLoc QualifierLoc;
 
-  /// NominatedNamespace - Namespace nominated by using-directive.
+  /// \brief The namespace nominated by this using-directive.
   NamedDecl *NominatedNamespace;
 
   /// Enclosing context containing both using-directive and nominated
   /// namespace.
   DeclContext *CommonAncestor;
 
-  /// getUsingDirectiveName - Returns special DeclarationName used by
-  /// using-directives. This is only used by DeclContext for storing
-  /// UsingDirectiveDecls in its lookup structure.
+  /// \brief Returns special DeclarationName used by using-directives.
+  ///
+  /// This is only used by DeclContext for storing UsingDirectiveDecls in
+  /// its lookup structure.
   static DeclarationName getName() {
     return DeclarationName::getUsingDirectiveName();
   }
@@ -2475,7 +2516,7 @@ public:
     return NominatedNamespace;
   }
 
-  /// getNominatedNamespace - Returns namespace nominated by using-directive.
+  /// \brief Returns the namespace nominated by this using-directive.
   NamespaceDecl *getNominatedNamespace();
 
   const NamespaceDecl *getNominatedNamespace() const {
@@ -2487,14 +2528,14 @@ public:
   DeclContext *getCommonAncestor() { return CommonAncestor; }
   const DeclContext *getCommonAncestor() const { return CommonAncestor; }
 
-  /// \brief Return the location of the "using" keyword.
+  /// \brief Return the location of the \c using keyword.
   SourceLocation getUsingLoc() const { return UsingLoc; }
 
   // FIXME: Could omit 'Key' in name.
-  /// getNamespaceKeyLocation - Returns location of namespace keyword.
+  /// \brief Returns the location of the \c namespace keyword.
   SourceLocation getNamespaceKeyLocation() const { return NamespaceLoc; }
 
-  /// getIdentLocation - Returns location of identifier.
+  /// \brief Returns the location of this using declaration's identifier.
   SourceLocation getIdentLocation() const { return getLocation(); }
 
   static UsingDirectiveDecl *Create(ASTContext &C, DeclContext *DC,
@@ -2523,23 +2564,25 @@ public:
 ///
 /// For example:
 ///
-/// @code
+/// \code
 /// namespace Foo = Bar;
-/// @endcode
+/// \endcode
 class NamespaceAliasDecl : public NamedDecl {
   virtual void anchor();
 
-  /// \brief The location of the "namespace" keyword.
+  /// \brief The location of the \c namespace keyword.
   SourceLocation NamespaceLoc;
 
-  /// IdentLoc - Location of namespace identifier. Accessed by TargetNameLoc.
+  /// \brief The location of the namespace's identifier.
+  ///
+  /// This is accessed by TargetNameLoc.
   SourceLocation IdentLoc;
 
   /// \brief The nested-name-specifier that precedes the namespace.
   NestedNameSpecifierLoc QualifierLoc;
 
-  /// Namespace - The Decl that this alias points to. Can either be a
-  /// NamespaceDecl or a NamespaceAliasDecl.
+  /// \brief The Decl that this alias points to, either a NamespaceDecl or
+  /// a NamespaceAliasDecl.
   NamedDecl *Namespace;
 
   NamespaceAliasDecl(DeclContext *DC, SourceLocation NamespaceLoc,
@@ -2579,7 +2622,7 @@ public:
   /// "namespace foo = ns::bar;".
   SourceLocation getAliasLoc() const { return getLocation(); }
 
-  /// Returns the location of the 'namespace' keyword.
+  /// Returns the location of the \c namespace keyword.
   SourceLocation getNamespaceLoc() const { return NamespaceLoc; }
 
   /// Returns the location of the identifier in the named namespace.
@@ -2611,7 +2654,7 @@ public:
 /// (resolved) using declaration.
 ///
 /// For example,
-/// @code
+/// \code
 /// namespace A {
 ///   void foo();
 /// }
@@ -2619,8 +2662,8 @@ public:
 ///   using A::foo; // <- a UsingDecl
 ///                 // Also creates a UsingShadowDecl for A::foo() in B
 /// }
-/// @endcode
-class UsingShadowDecl : public NamedDecl {
+/// \endcode
+class UsingShadowDecl : public NamedDecl, public Redeclarable<UsingShadowDecl> {
   virtual void anchor();
 
   /// The referenced declaration.
@@ -2643,6 +2686,17 @@ class UsingShadowDecl : public NamedDecl {
     setImplicit();
   }
 
+  typedef Redeclarable<UsingShadowDecl> redeclarable_base;
+  virtual UsingShadowDecl *getNextRedeclaration() {
+    return RedeclLink.getNext();
+  }
+  virtual UsingShadowDecl *getPreviousDeclImpl() {
+    return getPreviousDecl();
+  }
+  virtual UsingShadowDecl *getMostRecentDeclImpl() {
+    return getMostRecentDecl();
+  }
+
 public:
   static UsingShadowDecl *Create(ASTContext &C, DeclContext *DC,
                                  SourceLocation Loc, UsingDecl *Using,
@@ -2651,7 +2705,20 @@ public:
   }
 
   static UsingShadowDecl *CreateDeserialized(ASTContext &C, unsigned ID);
-  
+
+  typedef redeclarable_base::redecl_iterator redecl_iterator;
+  using redeclarable_base::redecls_begin;
+  using redeclarable_base::redecls_end;
+  using redeclarable_base::getPreviousDecl;
+  using redeclarable_base::getMostRecentDecl;
+
+  virtual UsingShadowDecl *getCanonicalDecl() {
+    return getFirstDecl();
+  }
+  virtual const UsingShadowDecl *getCanonicalDecl() const {
+    return getFirstDecl();
+  }
+
   /// \brief Gets the underlying declaration which has been brought into the
   /// local scope.
   NamedDecl *getTargetDecl() const { return Underlying; }
@@ -2683,20 +2750,20 @@ public:
 /// \brief Represents a C++ using-declaration.
 ///
 /// For example:
-/// @code
+/// \code
 ///    using someNameSpace::someIdentifier;
-/// @endcode
+/// \endcode
 class UsingDecl : public NamedDecl {
   virtual void anchor();
 
-  /// \brief The source location of the "using" location itself.
+  /// \brief The source location of the 'using' keyword itself.
   SourceLocation UsingLocation;
 
   /// \brief The nested-name-specifier that precedes the name.
   NestedNameSpecifierLoc QualifierLoc;
 
-  /// DNLoc - Provides source/type location info for the
-  /// declaration name embedded in the ValueDecl base class.
+  /// \brief Provides source/type location info for the declaration name
+  /// embedded in the ValueDecl base class.
   DeclarationNameLoc DNLoc;
 
   /// \brief The first shadow declaration of the shadow decl chain associated
@@ -2708,18 +2775,18 @@ class UsingDecl : public NamedDecl {
 
   UsingDecl(DeclContext *DC, SourceLocation UL,
             NestedNameSpecifierLoc QualifierLoc,
-            const DeclarationNameInfo &NameInfo, bool IsTypeNameArg)
+            const DeclarationNameInfo &NameInfo, bool HasTypenameKeyword)
     : NamedDecl(Using, DC, NameInfo.getLoc(), NameInfo.getName()),
       UsingLocation(UL), QualifierLoc(QualifierLoc),
-      DNLoc(NameInfo.getInfo()), FirstUsingShadow(0, IsTypeNameArg) {
+      DNLoc(NameInfo.getInfo()), FirstUsingShadow(0, HasTypenameKeyword) {
   }
 
 public:
-  /// \brief Returns the source location of the "using" keyword.
-  SourceLocation getUsingLocation() const { return UsingLocation; }
+  /// \brief Return the source location of the 'using' keyword.
+  SourceLocation getUsingLoc() const { return UsingLocation; }
 
   /// \brief Set the source location of the 'using' keyword.
-  void setUsingLocation(SourceLocation L) { UsingLocation = L; }
+  void setUsingLoc(SourceLocation L) { UsingLocation = L; }
 
   /// \brief Retrieve the nested-name-specifier that qualifies the name,
   /// with source-location information.
@@ -2734,13 +2801,16 @@ public:
     return DeclarationNameInfo(getDeclName(), getLocation(), DNLoc);
   }
 
+  /// \brief Return true if it is a C++03 access declaration (no 'using').
+  bool isAccessDeclaration() const { return UsingLocation.isInvalid(); }
+
   /// \brief Return true if the using declaration has 'typename'.
-  bool isTypeName() const { return FirstUsingShadow.getInt(); }
+  bool hasTypename() const { return FirstUsingShadow.getInt(); }
 
   /// \brief Sets whether the using declaration has 'typename'.
-  void setTypeName(bool TN) { FirstUsingShadow.setInt(TN); }
+  void setTypename(bool TN) { FirstUsingShadow.setInt(TN); }
 
-  /// \brief Iterates through the using shadow declarations assosiated with
+  /// \brief Iterates through the using shadow declarations associated with
   /// this using declaration.
   class shadow_iterator {
     /// \brief The current using shadow declaration.
@@ -2796,13 +2866,11 @@ public:
                            SourceLocation UsingL,
                            NestedNameSpecifierLoc QualifierLoc,
                            const DeclarationNameInfo &NameInfo,
-                           bool IsTypeNameArg);
+                           bool HasTypenameKeyword);
 
   static UsingDecl *CreateDeserialized(ASTContext &C, unsigned ID);
-  
-  SourceRange getSourceRange() const LLVM_READONLY {
-    return SourceRange(UsingLocation, getNameInfo().getEndLoc());
-  }
+
+  SourceRange getSourceRange() const LLVM_READONLY;
 
   static bool classof(const Decl *D) { return classofKind(D->getKind()); }
   static bool classofKind(Kind K) { return K == Using; }
@@ -2817,11 +2885,11 @@ public:
 /// Unlike non-dependent using declarations, these *only* bring through
 /// non-types; otherwise they would break two-phase lookup.
 ///
-/// @code
+/// \code
 /// template \<class T> class A : public Base<T> {
 ///   using Base<T>::foo;
 /// };
-/// @endcode
+/// \endcode
 class UnresolvedUsingValueDecl : public ValueDecl {
   virtual void anchor();
 
@@ -2831,8 +2899,8 @@ class UnresolvedUsingValueDecl : public ValueDecl {
   /// \brief The nested-name-specifier that precedes the name.
   NestedNameSpecifierLoc QualifierLoc;
 
-  /// DNLoc - Provides source/type location info for the
-  /// declaration name embedded in the ValueDecl base class.
+  /// \brief Provides source/type location info for the declaration name
+  /// embedded in the ValueDecl base class.
   DeclarationNameLoc DNLoc;
 
   UnresolvedUsingValueDecl(DeclContext *DC, QualType Ty,
@@ -2852,6 +2920,9 @@ public:
   /// \brief Set the source location of the 'using' keyword.
   void setUsingLoc(SourceLocation L) { UsingLocation = L; }
 
+  /// \brief Return true if it is a C++03 access declaration (no 'using').
+  bool isAccessDeclaration() const { return UsingLocation.isInvalid(); }
+
   /// \brief Retrieve the nested-name-specifier that qualifies the name,
   /// with source-location information.
   NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; }
@@ -2873,9 +2944,7 @@ public:
   static UnresolvedUsingValueDecl *
   CreateDeserialized(ASTContext &C, unsigned ID);
 
-  SourceRange getSourceRange() const LLVM_READONLY {
-    return SourceRange(UsingLocation, getNameInfo().getEndLoc());
-  }
+  SourceRange getSourceRange() const LLVM_READONLY;
 
   static bool classof(const Decl *D) { return classofKind(D->getKind()); }
   static bool classofKind(Kind K) { return K == UnresolvedUsingValue; }
@@ -2884,23 +2953,20 @@ public:
   friend class ASTDeclWriter;
 };
 
-/// @brief Represents a dependent using declaration which was marked with
+/// \brief Represents a dependent using declaration which was marked with
 /// \c typename.
 ///
-/// @code
+/// \code
 /// template \<class T> class A : public Base<T> {
 ///   using typename Base<T>::foo;
 /// };
-/// @endcode
+/// \endcode
 ///
 /// The type associated with an unresolved using typename decl is
 /// currently always a typename type.
 class UnresolvedUsingTypenameDecl : public TypeDecl {
   virtual void anchor();
 
-  /// \brief The source location of the 'using' keyword
-  SourceLocation UsingLocation;
-
   /// \brief The source location of the 'typename' keyword
   SourceLocation TypenameLocation;
 
diff --git a/include/clang/AST/DeclContextInternals.h b/include/clang/AST/DeclContextInternals.h
index 84f3698d6b58..9c626c80aaee 100644
--- a/include/clang/AST/DeclContextInternals.h
+++ b/include/clang/AST/DeclContextInternals.h
@@ -18,6 +18,7 @@
 #include "clang/AST/DeclCXX.h"
 #include "clang/AST/DeclarationName.h"
 #include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/PointerIntPair.h"
 #include "llvm/ADT/PointerUnion.h"
 #include "llvm/ADT/SmallVector.h"
 #include <algorithm>
@@ -26,23 +27,29 @@ namespace clang {
 
 class DependentDiagnostic;
 
-/// StoredDeclsList - This is an array of decls optimized a common case of only
-/// containing one entry.
+/// \brief An array of decls optimized for the common case of only containing
+/// one entry.
 struct StoredDeclsList {
 
-  /// DeclsTy - When in vector form, this is what the Data pointer points to.
+  /// \brief When in vector form, this is what the Data pointer points to.
   typedef SmallVector<NamedDecl *, 4> DeclsTy;
 
+  /// \brief A collection of declarations, with a flag to indicate if we have
+  /// further external declarations.
+  typedef llvm::PointerIntPair<DeclsTy *, 1, bool> DeclsAndHasExternalTy;
+
   /// \brief The stored data, which will be either a pointer to a NamedDecl,
-  /// or a pointer to a vector.
-  llvm::PointerUnion<NamedDecl *, DeclsTy *> Data;
+  /// or a pointer to a vector with a flag to indicate if there are further
+  /// external declarations.
+  llvm::PointerUnion<NamedDecl*, DeclsAndHasExternalTy> Data;
 
 public:
   StoredDeclsList() {}
 
   StoredDeclsList(const StoredDeclsList &RHS) : Data(RHS.Data) {
     if (DeclsTy *RHSVec = RHS.getAsVector())
-      Data = new DeclsTy(*RHSVec);
+      Data = DeclsAndHasExternalTy(new DeclsTy(*RHSVec),
+                                   RHS.hasExternalDecls());
   }
 
   ~StoredDeclsList() {
@@ -56,7 +63,7 @@ public:
       delete Vector;
     Data = RHS.Data;
     if (DeclsTy *RHSVec = RHS.getAsVector())
-      Data = new DeclsTy(*RHSVec);
+      Data = DeclsAndHasExternalTy(new DeclsTy(*RHSVec), hasExternalDecls());
     return *this;
   }
 
@@ -66,8 +73,27 @@ public:
     return Data.dyn_cast<NamedDecl *>();
   }
 
+  DeclsAndHasExternalTy getAsVectorAndHasExternal() const {
+    return Data.dyn_cast<DeclsAndHasExternalTy>();
+  }
+
   DeclsTy *getAsVector() const {
-    return Data.dyn_cast<DeclsTy *>();
+    return getAsVectorAndHasExternal().getPointer();
+  }
+
+  bool hasExternalDecls() const {
+    return getAsVectorAndHasExternal().getInt();
+  }
+
+  void setHasExternalDecls() {
+    if (DeclsTy *Vec = getAsVector())
+      Data = DeclsAndHasExternalTy(Vec, true);
+    else {
+      DeclsTy *VT = new DeclsTy();
+      if (NamedDecl *OldD = getAsDecl())
+        VT->push_back(OldD);
+      Data = DeclsAndHasExternalTy(VT, true);
+    }
   }
 
   void setOnlyValue(NamedDecl *ND) {
@@ -110,6 +136,8 @@ public:
       Vec.erase(std::remove_if(Vec.begin(), Vec.end(),
                                std::mem_fun(&Decl::isFromASTFile)),
                 Vec.end());
+      // Don't have any external decls any more.
+      Data = DeclsAndHasExternalTy(&Vec, false);
     }
   }
 
@@ -165,12 +193,14 @@ public:
   /// not a redeclaration to merge it into the appropriate place in our list.
   ///
   void AddSubsequentDecl(NamedDecl *D) {
+    assert(!isNull() && "don't AddSubsequentDecl when we have no decls");
+
     // If this is the second decl added to the list, convert this to vector
     // form.
     if (NamedDecl *OldD = getAsDecl()) {
       DeclsTy *VT = new DeclsTy();
       VT->push_back(OldD);
-      Data = VT;
+      Data = DeclsAndHasExternalTy(VT, false);
     }
 
     DeclsTy &Vec = *getAsVector();
diff --git a/include/clang/AST/DeclFriend.h b/include/clang/AST/DeclFriend.h
index 3a12878e7414..be6f2eb3e3ad 100644
--- a/include/clang/AST/DeclFriend.h
+++ b/include/clang/AST/DeclFriend.h
@@ -220,7 +220,7 @@ public:
 };
 
 inline CXXRecordDecl::friend_iterator CXXRecordDecl::friend_begin() const {
-  return friend_iterator(data().FirstFriend);
+  return friend_iterator(getFirstFriend());
 }
 
 inline CXXRecordDecl::friend_iterator CXXRecordDecl::friend_end() const {
@@ -228,7 +228,7 @@ inline CXXRecordDecl::friend_iterator CXXRecordDecl::friend_end() const {
 }
 
 inline void CXXRecordDecl::pushFriendDecl(FriendDecl *FD) {
-  assert(FD->NextFriend == 0 && "friend already has next friend?");
+  assert(!FD->NextFriend && "friend already has next friend?");
   FD->NextFriend = data().FirstFriend;
   data().FirstFriend = FD;
 }
diff --git a/include/clang/AST/DeclLookups.h b/include/clang/AST/DeclLookups.h
index 4477c25a9135..c16975a3307f 100644
--- a/include/clang/AST/DeclLookups.h
+++ b/include/clang/AST/DeclLookups.h
@@ -37,6 +37,8 @@ public:
                        StoredDeclsMap::iterator End)
       : It(It), End(End) {}
 
+  DeclarationName getLookupName() const { return It->first; }
+
   reference operator*() const { return It->second.getLookupResult(); }
   pointer operator->() const { return It->second.getLookupResult(); }
 
@@ -66,7 +68,7 @@ public:
   }
 };
 
-DeclContext::all_lookups_iterator DeclContext::lookups_begin() const {
+inline DeclContext::all_lookups_iterator DeclContext::lookups_begin() const {
   DeclContext *Primary = const_cast<DeclContext*>(this)->getPrimaryContext();
   if (Primary->hasExternalVisibleStorage())
     getParentASTContext().getExternalSource()->completeVisibleDeclsMap(Primary);
@@ -75,7 +77,7 @@ DeclContext::all_lookups_iterator DeclContext::lookups_begin() const {
   return all_lookups_iterator();
 }
 
-DeclContext::all_lookups_iterator DeclContext::lookups_end() const {
+inline DeclContext::all_lookups_iterator DeclContext::lookups_end() const {
   DeclContext *Primary = const_cast<DeclContext*>(this)->getPrimaryContext();
   if (Primary->hasExternalVisibleStorage())
     getParentASTContext().getExternalSource()->completeVisibleDeclsMap(Primary);
@@ -84,6 +86,22 @@ DeclContext::all_lookups_iterator DeclContext::lookups_end() const {
   return all_lookups_iterator();
 }
 
+inline
+DeclContext::all_lookups_iterator DeclContext::noload_lookups_begin() const {
+  DeclContext *Primary = const_cast<DeclContext*>(this)->getPrimaryContext();
+  if (StoredDeclsMap *Map = Primary->getLookupPtr())
+    return all_lookups_iterator(Map->begin(), Map->end());
+  return all_lookups_iterator();
+}
+
+inline
+DeclContext::all_lookups_iterator DeclContext::noload_lookups_end() const {
+  DeclContext *Primary = const_cast<DeclContext*>(this)->getPrimaryContext();
+  if (StoredDeclsMap *Map = Primary->getLookupPtr())
+    return all_lookups_iterator(Map->end(), Map->end());
+  return all_lookups_iterator();
+}
+
 } // end namespace clang
 
 #endif
diff --git a/include/clang/AST/DeclObjC.h b/include/clang/AST/DeclObjC.h
index 40de0135a74f..2e760d658e43 100644
--- a/include/clang/AST/DeclObjC.h
+++ b/include/clang/AST/DeclObjC.h
@@ -452,7 +452,7 @@ public:
   }
 
   /// \brief Determine whether this method has a body.
-  virtual bool hasBody() const { return Body; }
+  virtual bool hasBody() const { return Body.isValid(); }
 
   /// \brief Retrieve the body of this method, if it has one.
   virtual Stmt *getBody() const;
@@ -463,7 +463,7 @@ public:
   void setBody(Stmt *B) { Body = B; }
 
   /// \brief Returns whether this specific method is a definition.
-  bool isThisDeclarationADefinition() const { return Body; }
+  bool isThisDeclarationADefinition() const { return hasBody(); }
 
   // Implement isa/cast/dyncast/etc.
   static bool classof(const Decl *D) { return classofKind(D->getKind()); }
@@ -553,6 +553,9 @@ public:
 
   typedef llvm::DenseMap<IdentifierInfo*, ObjCPropertyDecl*> PropertyMap;
   
+  typedef llvm::DenseMap<const ObjCProtocolDecl *, ObjCPropertyDecl*>
+            ProtocolPropertyMap;
+  
   typedef llvm::SmallVector<ObjCPropertyDecl*, 8> PropertyDeclOrder;
   
   /// This routine collects list of properties to be implemented in the class.
@@ -1133,6 +1136,8 @@ public:
     return lookupInstanceVariable(IVarName, ClassDeclared);
   }
 
+  ObjCProtocolDecl *lookupNestedProtocol(IdentifierInfo *Name);
+                          
   // Lookup a method. First, we search locally. If a method isn't
   // found, we search referenced protocols and class categories.
   ObjCMethodDecl *lookupMethod(Selector Sel, bool isInstance,
@@ -1196,14 +1201,11 @@ public:
   using redeclarable_base::redecls_end;
   using redeclarable_base::getPreviousDecl;
   using redeclarable_base::getMostRecentDecl;
+  using redeclarable_base::isFirstDecl;
 
   /// Retrieves the canonical declaration of this Objective-C class.
-  ObjCInterfaceDecl *getCanonicalDecl() {
-    return getFirstDeclaration();
-  }
-  const ObjCInterfaceDecl *getCanonicalDecl() const {
-    return getFirstDeclaration();
-  }
+  ObjCInterfaceDecl *getCanonicalDecl() { return getFirstDecl(); }
+  const ObjCInterfaceDecl *getCanonicalDecl() const { return getFirstDecl(); }
 
   // Low-level accessor
   const Type *getTypeForDecl() const { return TypeForDecl; }
@@ -1244,10 +1246,12 @@ private:
   ObjCIvarDecl(ObjCContainerDecl *DC, SourceLocation StartLoc,
                SourceLocation IdLoc, IdentifierInfo *Id,
                QualType T, TypeSourceInfo *TInfo, AccessControl ac, Expr *BW,
-               bool synthesized)
+               bool synthesized,
+               bool backingIvarReferencedInAccessor)
     : FieldDecl(ObjCIvar, DC, StartLoc, IdLoc, Id, T, TInfo, BW,
                 /*Mutable=*/false, /*HasInit=*/ICIS_NoInit),
-      NextIvar(0), DeclAccess(ac), Synthesized(synthesized) {}
+      NextIvar(0), DeclAccess(ac), Synthesized(synthesized),
+      BackingIvarReferencedInAccessor(backingIvarReferencedInAccessor) {}
 
 public:
   static ObjCIvarDecl *Create(ASTContext &C, ObjCContainerDecl *DC,
@@ -1255,7 +1259,8 @@ public:
                               IdentifierInfo *Id, QualType T,
                               TypeSourceInfo *TInfo,
                               AccessControl ac, Expr *BW = NULL,
-                              bool synthesized=false);
+                              bool synthesized=false,
+                              bool backingIvarReferencedInAccessor=false);
 
   static ObjCIvarDecl *CreateDeserialized(ASTContext &C, unsigned ID);
   
@@ -1277,6 +1282,13 @@ public:
     return DeclAccess == None ? Protected : AccessControl(DeclAccess);
   }
 
+  void setBackingIvarReferencedInAccessor(bool val) {
+    BackingIvarReferencedInAccessor = val;
+  }
+  bool getBackingIvarReferencedInAccessor() const {
+    return BackingIvarReferencedInAccessor;
+  }
+  
   void setSynthesize(bool synth) { Synthesized = synth; }
   bool getSynthesize() const { return Synthesized; }
 
@@ -1291,6 +1303,7 @@ private:
   // NOTE: VC++ treats enums as signed, avoid using the AccessControl enum
   unsigned DeclAccess : 3;
   unsigned Synthesized : 1;
+  unsigned BackingIvarReferencedInAccessor : 1;
 };
 
 
@@ -1502,17 +1515,17 @@ public:
   using redeclarable_base::redecls_end;
   using redeclarable_base::getPreviousDecl;
   using redeclarable_base::getMostRecentDecl;
+  using redeclarable_base::isFirstDecl;
 
   /// Retrieves the canonical declaration of this Objective-C protocol.
-  ObjCProtocolDecl *getCanonicalDecl() {
-    return getFirstDeclaration();
-  }
-  const ObjCProtocolDecl *getCanonicalDecl() const {
-    return getFirstDeclaration();
-  }
+  ObjCProtocolDecl *getCanonicalDecl() { return getFirstDecl(); }
+  const ObjCProtocolDecl *getCanonicalDecl() const { return getFirstDecl(); }
 
   virtual void collectPropertiesToImplement(PropertyMap &PM,
                                             PropertyDeclOrder &PO) const;
+                           
+void collectInheritedProtocolProperties(const ObjCPropertyDecl *Property,
+                                        ProtocolPropertyMap &PM) const;
 
   static bool classof(const Decl *D) { return classofKind(D->getKind()); }
   static bool classofKind(Kind K) { return K == ObjCProtocol; }
diff --git a/include/clang/AST/DeclOpenMP.h b/include/clang/AST/DeclOpenMP.h
index ca92040c3286..42fe907aa174 100644
--- a/include/clang/AST/DeclOpenMP.h
+++ b/include/clang/AST/DeclOpenMP.h
@@ -1,4 +1,4 @@
-//===--- OpenMP.h - Classes for representing OpenMP directives ---*- C++ -*-===//
+//===- DeclOpenMP.h - Classes for representing OpenMP directives -*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -8,7 +8,7 @@
 //===----------------------------------------------------------------------===//
 ///
 /// \file
-/// \brief This file defines OpenMP nodes.
+/// \brief This file defines OpenMP nodes for declarative directives.
 ///
 //===----------------------------------------------------------------------===//
 
@@ -20,8 +20,6 @@
 
 namespace clang {
 
-class DeclRefExpr;
-
 /// \brief This represents '#pragma omp threadprivate ...' directive.
 /// For example, in the following, both 'a' and 'A::b' are threadprivate:
 ///
@@ -43,29 +41,29 @@ class OMPThreadPrivateDecl : public Decl {
   OMPThreadPrivateDecl(Kind DK, DeclContext *DC, SourceLocation L) :
     Decl(DK, DC, L), NumVars(0) { }
 
-  ArrayRef<const DeclRefExpr *> getVars() const {
-    return ArrayRef<const DeclRefExpr *>(
-                   reinterpret_cast<const DeclRefExpr * const *>(this + 1),
+  ArrayRef<const Expr *> getVars() const {
+    return ArrayRef<const Expr *>(
+                   reinterpret_cast<const Expr * const *>(this + 1),
                    NumVars);
   }
 
-  llvm::MutableArrayRef<DeclRefExpr *> getVars() {
-    return llvm::MutableArrayRef<DeclRefExpr *>(
-                                 reinterpret_cast<DeclRefExpr **>(this + 1),
+  llvm::MutableArrayRef<Expr *> getVars() {
+    return llvm::MutableArrayRef<Expr *>(
+                                 reinterpret_cast<Expr **>(this + 1),
                                  NumVars);
   }
 
-  void setVars(ArrayRef<DeclRefExpr *> VL);
+  void setVars(ArrayRef<Expr *> VL);
 
 public:
   static OMPThreadPrivateDecl *Create(ASTContext &C, DeclContext *DC,
                                       SourceLocation L,
-                                      ArrayRef<DeclRefExpr *> VL);
+                                      ArrayRef<Expr *> VL);
   static OMPThreadPrivateDecl *CreateDeserialized(ASTContext &C,
                                                   unsigned ID, unsigned N);
 
-  typedef llvm::MutableArrayRef<DeclRefExpr *>::iterator varlist_iterator;
-  typedef ArrayRef<const DeclRefExpr *>::iterator varlist_const_iterator;
+  typedef llvm::MutableArrayRef<Expr *>::iterator varlist_iterator;
+  typedef ArrayRef<const Expr *>::iterator varlist_const_iterator;
 
   unsigned varlist_size() const { return NumVars; }
   bool varlist_empty() const { return NumVars == 0; }
diff --git a/include/clang/AST/DeclTemplate.h b/include/clang/AST/DeclTemplate.h
index 425a617738b0..24bd28a75aaa 100644
--- a/include/clang/AST/DeclTemplate.h
+++ b/include/clang/AST/DeclTemplate.h
@@ -34,6 +34,8 @@ class TemplateTypeParmDecl;
 class NonTypeTemplateParmDecl;
 class TemplateTemplateParmDecl;
 class TypeAliasTemplateDecl;
+class VarTemplateDecl;
+class VarTemplatePartialSpecializationDecl;
 
 /// \brief Stores a template parameter of any kind.
 typedef llvm::PointerUnion3<TemplateTypeParmDecl*, NonTypeTemplateParmDecl*,
@@ -629,9 +631,9 @@ public:
   template <class decl_type> friend class RedeclarableTemplate;
 
   /// \brief Retrieves the canonical declaration of this template.
-  RedeclarableTemplateDecl *getCanonicalDecl() { return getFirstDeclaration(); }
-  const RedeclarableTemplateDecl *getCanonicalDecl() const { 
-    return getFirstDeclaration(); 
+  RedeclarableTemplateDecl *getCanonicalDecl() { return getFirstDecl(); }
+  const RedeclarableTemplateDecl *getCanonicalDecl() const {
+    return getFirstDecl();
   }
 
   /// \brief Determines whether this template was a specialization of a
@@ -713,6 +715,7 @@ public:
   using redeclarable_base::redecls_end;
   using redeclarable_base::getPreviousDecl;
   using redeclarable_base::getMostRecentDecl;
+  using redeclarable_base::isFirstDecl;
 
   // Implement isa/cast/dyncast/etc.
   static bool classof(const Decl *D) { return classofKind(D->getKind()); }
@@ -743,7 +746,7 @@ protected:
   /// \brief Data that is common to all of the declarations of a given
   /// function template.
   struct Common : CommonBase {
-    Common() : InjectedArgs(0) { }
+    Common() : InjectedArgs(), LazySpecializations() { }
 
     /// \brief The function template specializations for this function
     /// template, including explicit specializations and instantiations.
@@ -757,6 +760,13 @@ protected:
     /// template, and is allocated lazily, since most function templates do not
     /// require the use of this information.
     TemplateArgument *InjectedArgs;
+
+    /// \brief If non-null, points to an array of specializations known only
+    /// by their external declaration IDs.
+    ///
+    /// The first value in the array is the number of of specializations
+    /// that follow.
+    uint32_t *LazySpecializations;
   };
 
   FunctionTemplateDecl(DeclContext *DC, SourceLocation L, DeclarationName Name,
@@ -771,12 +781,13 @@ protected:
 
   friend class FunctionDecl;
 
+  /// \brief Load any lazily-loaded specializations from the external source.
+  void LoadLazySpecializations() const;
+
   /// \brief Retrieve the set of function template specializations of this
   /// function template.
   llvm::FoldingSetVector<FunctionTemplateSpecializationInfo> &
-  getSpecializations() const {
-    return getCommonPtr()->Specializations;
-  }
+  getSpecializations() const;
 
   /// \brief Add a specialization of this function template.
   ///
@@ -815,14 +826,14 @@ public:
   /// NULL if no such declaration exists.
   FunctionTemplateDecl *getPreviousDecl() {
     return cast_or_null<FunctionTemplateDecl>(
-             RedeclarableTemplateDecl::getPreviousDecl());
+             static_cast<RedeclarableTemplateDecl *>(this)->getPreviousDecl());
   }
 
   /// \brief Retrieve the previous declaration of this function template, or
   /// NULL if no such declaration exists.
   const FunctionTemplateDecl *getPreviousDecl() const {
     return cast_or_null<FunctionTemplateDecl>(
-             RedeclarableTemplateDecl::getPreviousDecl());
+       static_cast<const RedeclarableTemplateDecl *>(this)->getPreviousDecl());
   }
 
   FunctionTemplateDecl *getInstantiatedFromMemberTemplate() {
@@ -847,7 +858,7 @@ public:
   /// arguments for a function template, the notion is convenient when
   /// we need to perform substitutions inside the definition of a function
   /// template.
-  std::pair<const TemplateArgument *, unsigned> getInjectedTemplateArgs();
+  ArrayRef<TemplateArgument> getInjectedTemplateArgs();
 
   /// \brief Create a function template node.
   static FunctionTemplateDecl *Create(ASTContext &C, DeclContext *DC,
@@ -1377,7 +1388,7 @@ class ClassTemplateSpecializationDecl
 
     /// \brief The template argument list deduced for the class template
     /// partial specialization itself.
-    TemplateArgumentList *TemplateArgs;
+    const TemplateArgumentList *TemplateArgs;
   };
 
   /// \brief The template that this specialization specializes
@@ -1402,7 +1413,7 @@ class ClassTemplateSpecializationDecl
   ExplicitSpecializationInfo *ExplicitInfo;
 
   /// \brief The template arguments used to describe this specialization.
-  TemplateArgumentList *TemplateArgs;
+  const TemplateArgumentList *TemplateArgs;
 
   /// \brief The point where this template was instantiated (if any)
   SourceLocation PointOfInstantiation;
@@ -1438,9 +1449,9 @@ public:
                                     bool Qualified) const;
 
   ClassTemplateSpecializationDecl *getMostRecentDecl() {
-    CXXRecordDecl *Recent
-        = cast<CXXRecordDecl>(CXXRecordDecl::getMostRecentDecl());
-    if (!isa<ClassTemplateSpecializationDecl>(Recent)) {
+    CXXRecordDecl *Recent = static_cast<CXXRecordDecl *>(
+                              this)->getMostRecentDecl();
+    while (!isa<ClassTemplateSpecializationDecl>(Recent)) {
       // FIXME: Does injected class name need to be in the redeclarations chain?
       assert(Recent->isInjectedClassName() && Recent->getPreviousDecl());
       Recent = Recent->getPreviousDecl();
@@ -1553,7 +1564,7 @@ public:
   /// instantiation of the given class template partial specialization whose
   /// template arguments have been deduced.
   void setInstantiationOf(ClassTemplatePartialSpecializationDecl *PartialSpec,
-                          TemplateArgumentList *TemplateArgs) {
+                          const TemplateArgumentList *TemplateArgs) {
     assert(!SpecializedTemplate.is<SpecializedPartialSpecialization*>() &&
            "Already set to a class template partial specialization!");
     SpecializedPartialSpecialization *PS
@@ -1639,13 +1650,7 @@ class ClassTemplatePartialSpecializationDecl
 
   /// \brief The source info for the template arguments as written.
   /// FIXME: redundant with TypeAsWritten?
-  TemplateArgumentLoc *ArgsAsWritten;
-  unsigned NumArgsAsWritten;
-
-  /// \brief Sequence number indicating when this class template partial
-  /// specialization was added to the set of partial specializations for
-  /// its owning class template.
-  unsigned SequenceNumber;
+  const ASTTemplateArgumentListInfo *ArgsAsWritten;
 
   /// \brief The class template partial specialization from which this
   /// class template partial specialization was instantiated.
@@ -1663,16 +1668,12 @@ class ClassTemplatePartialSpecializationDecl
                                          ClassTemplateDecl *SpecializedTemplate,
                                          const TemplateArgument *Args,
                                          unsigned NumArgs,
-                                         TemplateArgumentLoc *ArgInfos,
-                                         unsigned NumArgInfos,
-                               ClassTemplatePartialSpecializationDecl *PrevDecl,
-                                         unsigned SequenceNumber);
+                               const ASTTemplateArgumentListInfo *ArgsAsWritten,
+                               ClassTemplatePartialSpecializationDecl *PrevDecl);
 
   ClassTemplatePartialSpecializationDecl()
     : ClassTemplateSpecializationDecl(ClassTemplatePartialSpecialization),
-      TemplateParams(0), ArgsAsWritten(0),
-      NumArgsAsWritten(0), SequenceNumber(0),
-      InstantiatedFromMember(0, false) { }
+      TemplateParams(0), ArgsAsWritten(0), InstantiatedFromMember(0, false) { }
 
 public:
   static ClassTemplatePartialSpecializationDecl *
@@ -1684,15 +1685,15 @@ public:
          unsigned NumArgs,
          const TemplateArgumentListInfo &ArgInfos,
          QualType CanonInjectedType,
-         ClassTemplatePartialSpecializationDecl *PrevDecl,
-         unsigned SequenceNumber);
+         ClassTemplatePartialSpecializationDecl *PrevDecl);
 
   static ClassTemplatePartialSpecializationDecl *
   CreateDeserialized(ASTContext &C, unsigned ID);
 
   ClassTemplatePartialSpecializationDecl *getMostRecentDecl() {
     return cast<ClassTemplatePartialSpecializationDecl>(
-                   ClassTemplateSpecializationDecl::getMostRecentDecl());
+             static_cast<ClassTemplateSpecializationDecl *>(
+               this)->getMostRecentDecl());
   }
 
   /// Get the list of template parameters
@@ -1701,19 +1702,10 @@ public:
   }
 
   /// Get the template arguments as written.
-  TemplateArgumentLoc *getTemplateArgsAsWritten() const {
+  const ASTTemplateArgumentListInfo *getTemplateArgsAsWritten() const {
     return ArgsAsWritten;
   }
 
-  /// Get the number of template arguments as written.
-  unsigned getNumTemplateArgsAsWritten() const {
-    return NumArgsAsWritten;
-  }
-
-  /// \brief Get the sequence number for this class template partial
-  /// specialization.
-  unsigned getSequenceNumber() const { return SequenceNumber; }
-
   /// \brief Retrieve the member class template partial specialization from
   /// which this particular class template partial specialization was
   /// instantiated.
@@ -1735,15 +1727,15 @@ public:
   /// \c Outer<float>::Inner<U*>, this function would return
   /// \c Outer<T>::Inner<U*>.
   ClassTemplatePartialSpecializationDecl *getInstantiatedFromMember() {
-    ClassTemplatePartialSpecializationDecl *First
-      = cast<ClassTemplatePartialSpecializationDecl>(getFirstDeclaration());
+    ClassTemplatePartialSpecializationDecl *First =
+        cast<ClassTemplatePartialSpecializationDecl>(getFirstDecl());
     return First->InstantiatedFromMember.getPointer();
   }
 
   void setInstantiatedFromMember(
                           ClassTemplatePartialSpecializationDecl *PartialSpec) {
-    ClassTemplatePartialSpecializationDecl *First
-      = cast<ClassTemplatePartialSpecializationDecl>(getFirstDeclaration());
+    ClassTemplatePartialSpecializationDecl *First =
+        cast<ClassTemplatePartialSpecializationDecl>(getFirstDecl());
     First->InstantiatedFromMember.setPointer(PartialSpec);
   }
 
@@ -1764,15 +1756,15 @@ public:
   /// struct X<int>::Inner<T*> { /* ... */ };
   /// \endcode
   bool isMemberSpecialization() {
-    ClassTemplatePartialSpecializationDecl *First
-      = cast<ClassTemplatePartialSpecializationDecl>(getFirstDeclaration());
+    ClassTemplatePartialSpecializationDecl *First =
+        cast<ClassTemplatePartialSpecializationDecl>(getFirstDecl());
     return First->InstantiatedFromMember.getInt();
   }
 
   /// \brief Note that this member template is a specialization.
   void setMemberSpecialization() {
-    ClassTemplatePartialSpecializationDecl *First
-      = cast<ClassTemplatePartialSpecializationDecl>(getFirstDeclaration());
+    ClassTemplatePartialSpecializationDecl *First =
+        cast<ClassTemplatePartialSpecializationDecl>(getFirstDecl());
     assert(First->InstantiatedFromMember.getPointer() &&
            "Only member templates can be member template specializations");
     return First->InstantiatedFromMember.setInt(true);
@@ -1821,7 +1813,7 @@ protected:
     QualType InjectedClassNameType;
 
     /// \brief If non-null, points to an array of specializations (including
-    /// partial specializations) known ownly by their external declaration IDs.
+    /// partial specializations) known only by their external declaration IDs.
     ///
     /// The first value in the array is the number of of specializations/
     /// partial specializations that follow.
@@ -1900,14 +1892,23 @@ public:
   /// NULL if no such declaration exists.
   ClassTemplateDecl *getPreviousDecl() {
     return cast_or_null<ClassTemplateDecl>(
-             RedeclarableTemplateDecl::getPreviousDecl());
+             static_cast<RedeclarableTemplateDecl *>(this)->getPreviousDecl());
   }
 
   /// \brief Retrieve the previous declaration of this class template, or
   /// NULL if no such declaration exists.
   const ClassTemplateDecl *getPreviousDecl() const {
     return cast_or_null<ClassTemplateDecl>(
-             RedeclarableTemplateDecl::getPreviousDecl());
+             static_cast<const RedeclarableTemplateDecl *>(
+               this)->getPreviousDecl());
+  }
+
+  ClassTemplateDecl *getMostRecentDecl() {
+    return cast<ClassTemplateDecl>(
+        static_cast<RedeclarableTemplateDecl *>(this)->getMostRecentDecl());
+  }
+  const ClassTemplateDecl *getMostRecentDecl() const {
+    return const_cast<ClassTemplateDecl*>(this)->getMostRecentDecl();
   }
 
   ClassTemplateDecl *getInstantiatedFromMemberTemplate() {
@@ -1926,11 +1927,6 @@ public:
   void AddPartialSpecialization(ClassTemplatePartialSpecializationDecl *D,
                                 void *InsertPos);
 
-  /// \brief Return the next partial specialization sequence number.
-  unsigned getNextPartialSpecSequenceNumber() {
-    return getPartialSpecializations().size();
-  }
-
   /// \brief Retrieve the partial specializations as an ordered list.
   void getPartialSpecializations(
           SmallVectorImpl<ClassTemplatePartialSpecializationDecl *> &PS);
@@ -2139,14 +2135,15 @@ public:
   /// NULL if no such declaration exists.
   TypeAliasTemplateDecl *getPreviousDecl() {
     return cast_or_null<TypeAliasTemplateDecl>(
-             RedeclarableTemplateDecl::getPreviousDecl());
+             static_cast<RedeclarableTemplateDecl *>(this)->getPreviousDecl());
   }
 
   /// \brief Retrieve the previous declaration of this function template, or
   /// NULL if no such declaration exists.
   const TypeAliasTemplateDecl *getPreviousDecl() const {
     return cast_or_null<TypeAliasTemplateDecl>(
-             RedeclarableTemplateDecl::getPreviousDecl());
+             static_cast<const RedeclarableTemplateDecl *>(
+               this)->getPreviousDecl());
   }
 
   TypeAliasTemplateDecl *getInstantiatedFromMemberTemplate() {
@@ -2239,6 +2236,578 @@ public:
 inline AnyFunctionDecl::AnyFunctionDecl(FunctionTemplateDecl *FTD)
   : Function(FTD) { }
 
+/// \brief Represents a variable template specialization, which refers to
+/// a variable template with a given set of template arguments.
+///
+/// Variable template specializations represent both explicit
+/// specializations of variable templates, as in the example below, and
+/// implicit instantiations of variable templates.
+///
+/// \code
+/// template<typename T> constexpr T pi = T(3.1415926535897932385);
+///
+/// template<>
+/// constexpr float pi<float>; // variable template specialization pi<float>
+/// \endcode
+class VarTemplateSpecializationDecl : public VarDecl,
+                                      public llvm::FoldingSetNode {
+
+  /// \brief Structure that stores information about a variable template
+  /// specialization that was instantiated from a variable template partial
+  /// specialization.
+  struct SpecializedPartialSpecialization {
+    /// \brief The variable template partial specialization from which this
+    /// variable template specialization was instantiated.
+    VarTemplatePartialSpecializationDecl *PartialSpecialization;
+
+    /// \brief The template argument list deduced for the variable template
+    /// partial specialization itself.
+    const TemplateArgumentList *TemplateArgs;
+  };
+
+  /// \brief The template that this specialization specializes.
+  llvm::PointerUnion<VarTemplateDecl *, SpecializedPartialSpecialization *>
+  SpecializedTemplate;
+
+  /// \brief Further info for explicit template specialization/instantiation.
+  struct ExplicitSpecializationInfo {
+    /// \brief The type-as-written.
+    TypeSourceInfo *TypeAsWritten;
+    /// \brief The location of the extern keyword.
+    SourceLocation ExternLoc;
+    /// \brief The location of the template keyword.
+    SourceLocation TemplateKeywordLoc;
+
+    ExplicitSpecializationInfo()
+        : TypeAsWritten(0), ExternLoc(), TemplateKeywordLoc() {}
+  };
+
+  /// \brief Further info for explicit template specialization/instantiation.
+  /// Does not apply to implicit specializations.
+  ExplicitSpecializationInfo *ExplicitInfo;
+
+  /// \brief The template arguments used to describe this specialization.
+  const TemplateArgumentList *TemplateArgs;
+  TemplateArgumentListInfo TemplateArgsInfo;
+
+  /// \brief The point where this template was instantiated (if any).
+  SourceLocation PointOfInstantiation;
+
+  /// \brief The kind of specialization this declaration refers to.
+  /// Really a value of type TemplateSpecializationKind.
+  unsigned SpecializationKind : 3;
+
+protected:
+  VarTemplateSpecializationDecl(ASTContext &Context, Kind DK, DeclContext *DC,
+                                SourceLocation StartLoc, SourceLocation IdLoc,
+                                VarTemplateDecl *SpecializedTemplate,
+                                QualType T, TypeSourceInfo *TInfo,
+                                StorageClass S, const TemplateArgument *Args,
+                                unsigned NumArgs);
+
+  explicit VarTemplateSpecializationDecl(Kind DK);
+
+public:
+  static VarTemplateSpecializationDecl *
+  Create(ASTContext &Context, DeclContext *DC, SourceLocation StartLoc,
+         SourceLocation IdLoc, VarTemplateDecl *SpecializedTemplate, QualType T,
+         TypeSourceInfo *TInfo, StorageClass S, const TemplateArgument *Args,
+         unsigned NumArgs);
+  static VarTemplateSpecializationDecl *CreateDeserialized(ASTContext &C,
+                                                           unsigned ID);
+
+  virtual void getNameForDiagnostic(raw_ostream &OS,
+                                    const PrintingPolicy &Policy,
+                                    bool Qualified) const;
+
+  VarTemplateSpecializationDecl *getMostRecentDecl() {
+    VarDecl *Recent = static_cast<VarDecl *>(this)->getMostRecentDecl();
+    return cast<VarTemplateSpecializationDecl>(Recent);
+  }
+
+  /// \brief Retrieve the template that this specialization specializes.
+  VarTemplateDecl *getSpecializedTemplate() const;
+
+  /// \brief Retrieve the template arguments of the variable template
+  /// specialization.
+  const TemplateArgumentList &getTemplateArgs() const { return *TemplateArgs; }
+
+  // TODO: Always set this when creating the new specialization?
+  void setTemplateArgsInfo(const TemplateArgumentListInfo &ArgsInfo);
+
+  const TemplateArgumentListInfo &getTemplateArgsInfo() const {
+    return TemplateArgsInfo;
+  }
+
+  /// \brief Determine the kind of specialization that this
+  /// declaration represents.
+  TemplateSpecializationKind getSpecializationKind() const {
+    return static_cast<TemplateSpecializationKind>(SpecializationKind);
+  }
+
+  bool isExplicitSpecialization() const {
+    return getSpecializationKind() == TSK_ExplicitSpecialization;
+  }
+
+  /// \brief True if this declaration is an explicit specialization,
+  /// explicit instantiation declaration, or explicit instantiation
+  /// definition.
+  bool isExplicitInstantiationOrSpecialization() const {
+    switch (getTemplateSpecializationKind()) {
+    case TSK_ExplicitSpecialization:
+    case TSK_ExplicitInstantiationDeclaration:
+    case TSK_ExplicitInstantiationDefinition:
+      return true;
+
+    case TSK_Undeclared:
+    case TSK_ImplicitInstantiation:
+      return false;
+    }
+    llvm_unreachable("bad template specialization kind");
+  }
+
+  void setSpecializationKind(TemplateSpecializationKind TSK) {
+    SpecializationKind = TSK;
+  }
+
+  /// \brief Get the point of instantiation (if any), or null if none.
+  SourceLocation getPointOfInstantiation() const {
+    return PointOfInstantiation;
+  }
+
+  void setPointOfInstantiation(SourceLocation Loc) {
+    assert(Loc.isValid() && "point of instantiation must be valid!");
+    PointOfInstantiation = Loc;
+  }
+
+  /// \brief If this variable template specialization is an instantiation of
+  /// a template (rather than an explicit specialization), return the
+  /// variable template or variable template partial specialization from which
+  /// it was instantiated.
+  llvm::PointerUnion<VarTemplateDecl *, VarTemplatePartialSpecializationDecl *>
+  getInstantiatedFrom() const {
+    if (getSpecializationKind() != TSK_ImplicitInstantiation &&
+        getSpecializationKind() != TSK_ExplicitInstantiationDefinition &&
+        getSpecializationKind() != TSK_ExplicitInstantiationDeclaration)
+      return llvm::PointerUnion<VarTemplateDecl *,
+                                VarTemplatePartialSpecializationDecl *>();
+
+    if (SpecializedPartialSpecialization *PartialSpec =
+            SpecializedTemplate.dyn_cast<SpecializedPartialSpecialization *>())
+      return PartialSpec->PartialSpecialization;
+
+    return SpecializedTemplate.get<VarTemplateDecl *>();
+  }
+
+  /// \brief Retrieve the variable template or variable template partial
+  /// specialization which was specialized by this.
+  llvm::PointerUnion<VarTemplateDecl *, VarTemplatePartialSpecializationDecl *>
+  getSpecializedTemplateOrPartial() const {
+    if (SpecializedPartialSpecialization *PartialSpec =
+            SpecializedTemplate.dyn_cast<SpecializedPartialSpecialization *>())
+      return PartialSpec->PartialSpecialization;
+
+    return SpecializedTemplate.get<VarTemplateDecl *>();
+  }
+
+  /// \brief Retrieve the set of template arguments that should be used
+  /// to instantiate the initializer of the variable template or variable
+  /// template partial specialization from which this variable template
+  /// specialization was instantiated.
+  ///
+  /// \returns For a variable template specialization instantiated from the
+  /// primary template, this function will return the same template arguments
+  /// as getTemplateArgs(). For a variable template specialization instantiated
+  /// from a variable template partial specialization, this function will the
+  /// return deduced template arguments for the variable template partial
+  /// specialization itself.
+  const TemplateArgumentList &getTemplateInstantiationArgs() const {
+    if (SpecializedPartialSpecialization *PartialSpec =
+            SpecializedTemplate.dyn_cast<SpecializedPartialSpecialization *>())
+      return *PartialSpec->TemplateArgs;
+
+    return getTemplateArgs();
+  }
+
+  /// \brief Note that this variable template specialization is actually an
+  /// instantiation of the given variable template partial specialization whose
+  /// template arguments have been deduced.
+  void setInstantiationOf(VarTemplatePartialSpecializationDecl *PartialSpec,
+                          const TemplateArgumentList *TemplateArgs) {
+    assert(!SpecializedTemplate.is<SpecializedPartialSpecialization *>() &&
+           "Already set to a variable template partial specialization!");
+    SpecializedPartialSpecialization *PS =
+        new (getASTContext()) SpecializedPartialSpecialization();
+    PS->PartialSpecialization = PartialSpec;
+    PS->TemplateArgs = TemplateArgs;
+    SpecializedTemplate = PS;
+  }
+
+  /// \brief Note that this variable template specialization is an instantiation
+  /// of the given variable template.
+  void setInstantiationOf(VarTemplateDecl *TemplDecl) {
+    assert(!SpecializedTemplate.is<SpecializedPartialSpecialization *>() &&
+           "Previously set to a variable template partial specialization!");
+    SpecializedTemplate = TemplDecl;
+  }
+
+  /// \brief Sets the type of this specialization as it was written by
+  /// the user.
+  void setTypeAsWritten(TypeSourceInfo *T) {
+    if (!ExplicitInfo)
+      ExplicitInfo = new (getASTContext()) ExplicitSpecializationInfo;
+    ExplicitInfo->TypeAsWritten = T;
+  }
+  /// \brief Gets the type of this specialization as it was written by
+  /// the user, if it was so written.
+  TypeSourceInfo *getTypeAsWritten() const {
+    return ExplicitInfo ? ExplicitInfo->TypeAsWritten : 0;
+  }
+
+  /// \brief Gets the location of the extern keyword, if present.
+  SourceLocation getExternLoc() const {
+    return ExplicitInfo ? ExplicitInfo->ExternLoc : SourceLocation();
+  }
+  /// \brief Sets the location of the extern keyword.
+  void setExternLoc(SourceLocation Loc) {
+    if (!ExplicitInfo)
+      ExplicitInfo = new (getASTContext()) ExplicitSpecializationInfo;
+    ExplicitInfo->ExternLoc = Loc;
+  }
+
+  /// \brief Sets the location of the template keyword.
+  void setTemplateKeywordLoc(SourceLocation Loc) {
+    if (!ExplicitInfo)
+      ExplicitInfo = new (getASTContext()) ExplicitSpecializationInfo;
+    ExplicitInfo->TemplateKeywordLoc = Loc;
+  }
+  /// \brief Gets the location of the template keyword, if present.
+  SourceLocation getTemplateKeywordLoc() const {
+    return ExplicitInfo ? ExplicitInfo->TemplateKeywordLoc : SourceLocation();
+  }
+
+  void Profile(llvm::FoldingSetNodeID &ID) const {
+    Profile(ID, TemplateArgs->data(), TemplateArgs->size(), getASTContext());
+  }
+
+  static void Profile(llvm::FoldingSetNodeID &ID,
+                      const TemplateArgument *TemplateArgs,
+                      unsigned NumTemplateArgs, ASTContext &Context) {
+    ID.AddInteger(NumTemplateArgs);
+    for (unsigned Arg = 0; Arg != NumTemplateArgs; ++Arg)
+      TemplateArgs[Arg].Profile(ID, Context);
+  }
+
+  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
+  static bool classofKind(Kind K) {
+    return K >= firstVarTemplateSpecialization &&
+           K <= lastVarTemplateSpecialization;
+  }
+
+  friend class ASTDeclReader;
+  friend class ASTDeclWriter;
+};
+
+class VarTemplatePartialSpecializationDecl
+    : public VarTemplateSpecializationDecl {
+  virtual void anchor();
+
+  /// \brief The list of template parameters
+  TemplateParameterList *TemplateParams;
+
+  /// \brief The source info for the template arguments as written.
+  /// FIXME: redundant with TypeAsWritten?
+  const ASTTemplateArgumentListInfo *ArgsAsWritten;
+
+  /// \brief The variable template partial specialization from which this
+  /// variable template partial specialization was instantiated.
+  ///
+  /// The boolean value will be true to indicate that this variable template
+  /// partial specialization was specialized at this level.
+  llvm::PointerIntPair<VarTemplatePartialSpecializationDecl *, 1, bool>
+  InstantiatedFromMember;
+
+  VarTemplatePartialSpecializationDecl(
+      ASTContext &Context, DeclContext *DC, SourceLocation StartLoc,
+      SourceLocation IdLoc, TemplateParameterList *Params,
+      VarTemplateDecl *SpecializedTemplate, QualType T, TypeSourceInfo *TInfo,
+      StorageClass S, const TemplateArgument *Args, unsigned NumArgs,
+      const ASTTemplateArgumentListInfo *ArgInfos);
+
+  VarTemplatePartialSpecializationDecl()
+      : VarTemplateSpecializationDecl(VarTemplatePartialSpecialization),
+        TemplateParams(0), ArgsAsWritten(0), InstantiatedFromMember(0, false) {}
+
+public:
+  static VarTemplatePartialSpecializationDecl *
+  Create(ASTContext &Context, DeclContext *DC, SourceLocation StartLoc,
+         SourceLocation IdLoc, TemplateParameterList *Params,
+         VarTemplateDecl *SpecializedTemplate, QualType T,
+         TypeSourceInfo *TInfo, StorageClass S, const TemplateArgument *Args,
+         unsigned NumArgs, const TemplateArgumentListInfo &ArgInfos);
+
+  static VarTemplatePartialSpecializationDecl *CreateDeserialized(ASTContext &C,
+                                                                  unsigned ID);
+
+  VarTemplatePartialSpecializationDecl *getMostRecentDecl() {
+    return cast<VarTemplatePartialSpecializationDecl>(
+             static_cast<VarTemplateSpecializationDecl *>(
+               this)->getMostRecentDecl());
+  }
+
+  /// Get the list of template parameters
+  TemplateParameterList *getTemplateParameters() const {
+    return TemplateParams;
+  }
+
+  /// Get the template arguments as written.
+  const ASTTemplateArgumentListInfo *getTemplateArgsAsWritten() const {
+    return ArgsAsWritten;
+  }
+
+  /// \brief Retrieve the member variable template partial specialization from
+  /// which this particular variable template partial specialization was
+  /// instantiated.
+  ///
+  /// \code
+  /// template<typename T>
+  /// struct Outer {
+  ///   template<typename U> U Inner;
+  ///   template<typename U> U* Inner<U*> = (U*)(0); // #1
+  /// };
+  ///
+  /// template int* Outer<float>::Inner<int*>;
+  /// \endcode
+  ///
+  /// In this example, the instantiation of \c Outer<float>::Inner<int*> will
+  /// end up instantiating the partial specialization
+  /// \c Outer<float>::Inner<U*>, which itself was instantiated from the
+  /// variable template partial specialization \c Outer<T>::Inner<U*>. Given
+  /// \c Outer<float>::Inner<U*>, this function would return
+  /// \c Outer<T>::Inner<U*>.
+  VarTemplatePartialSpecializationDecl *getInstantiatedFromMember() {
+    VarTemplatePartialSpecializationDecl *First =
+        cast<VarTemplatePartialSpecializationDecl>(getFirstDecl());
+    return First->InstantiatedFromMember.getPointer();
+  }
+
+  void
+  setInstantiatedFromMember(VarTemplatePartialSpecializationDecl *PartialSpec) {
+    VarTemplatePartialSpecializationDecl *First =
+        cast<VarTemplatePartialSpecializationDecl>(getFirstDecl());
+    First->InstantiatedFromMember.setPointer(PartialSpec);
+  }
+
+  /// \brief Determines whether this variable template partial specialization
+  /// was a specialization of a member partial specialization.
+  ///
+  /// In the following example, the member template partial specialization
+  /// \c X<int>::Inner<T*> is a member specialization.
+  ///
+  /// \code
+  /// template<typename T>
+  /// struct X {
+  ///   template<typename U> U Inner;
+  ///   template<typename U> U* Inner<U*> = (U*)(0);
+  /// };
+  ///
+  /// template<> template<typename T>
+  /// U* X<int>::Inner<T*> = (T*)(0) + 1;
+  /// \endcode
+  bool isMemberSpecialization() {
+    VarTemplatePartialSpecializationDecl *First =
+        cast<VarTemplatePartialSpecializationDecl>(getFirstDecl());
+    return First->InstantiatedFromMember.getInt();
+  }
+
+  /// \brief Note that this member template is a specialization.
+  void setMemberSpecialization() {
+    VarTemplatePartialSpecializationDecl *First =
+        cast<VarTemplatePartialSpecializationDecl>(getFirstDecl());
+    assert(First->InstantiatedFromMember.getPointer() &&
+           "Only member templates can be member template specializations");
+    return First->InstantiatedFromMember.setInt(true);
+  }
+
+  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
+  static bool classofKind(Kind K) {
+    return K == VarTemplatePartialSpecialization;
+  }
+
+  friend class ASTDeclReader;
+  friend class ASTDeclWriter;
+};
+
+/// Declaration of a variable template.
+class VarTemplateDecl : public RedeclarableTemplateDecl {
+  static void DeallocateCommon(void *Ptr);
+
+protected:
+  /// \brief Data that is common to all of the declarations of a given
+  /// variable template.
+  struct Common : CommonBase {
+    Common() : LazySpecializations() {}
+
+    /// \brief The variable template specializations for this variable
+    /// template, including explicit specializations and instantiations.
+    llvm::FoldingSetVector<VarTemplateSpecializationDecl> Specializations;
+
+    /// \brief The variable template partial specializations for this variable
+    /// template.
+    llvm::FoldingSetVector<VarTemplatePartialSpecializationDecl>
+    PartialSpecializations;
+
+    /// \brief If non-null, points to an array of specializations (including
+    /// partial specializations) known ownly by their external declaration IDs.
+    ///
+    /// The first value in the array is the number of of specializations/
+    /// partial specializations that follow.
+    uint32_t *LazySpecializations;
+  };
+
+  /// \brief Load any lazily-loaded specializations from the external source.
+  void LoadLazySpecializations() const;
+
+  /// \brief Retrieve the set of specializations of this variable template.
+  llvm::FoldingSetVector<VarTemplateSpecializationDecl> &
+  getSpecializations() const;
+
+  /// \brief Retrieve the set of partial specializations of this class
+  /// template.
+  llvm::FoldingSetVector<VarTemplatePartialSpecializationDecl> &
+  getPartialSpecializations();
+
+  VarTemplateDecl(DeclContext *DC, SourceLocation L, DeclarationName Name,
+                  TemplateParameterList *Params, NamedDecl *Decl)
+      : RedeclarableTemplateDecl(VarTemplate, DC, L, Name, Params, Decl) {}
+
+  VarTemplateDecl(EmptyShell Empty)
+      : RedeclarableTemplateDecl(VarTemplate, 0, SourceLocation(),
+                                 DeclarationName(), 0, 0) {}
+
+  CommonBase *newCommon(ASTContext &C) const;
+
+  Common *getCommonPtr() const {
+    return static_cast<Common *>(RedeclarableTemplateDecl::getCommonPtr());
+  }
+
+public:
+  /// \brief Get the underlying variable declarations of the template.
+  VarDecl *getTemplatedDecl() const {
+    return static_cast<VarDecl *>(TemplatedDecl);
+  }
+
+  /// \brief Returns whether this template declaration defines the primary
+  /// variable pattern.
+  bool isThisDeclarationADefinition() const {
+    return getTemplatedDecl()->isThisDeclarationADefinition();
+  }
+
+  VarTemplateDecl *getDefinition();
+
+  /// \brief Create a variable template node.
+  static VarTemplateDecl *Create(ASTContext &C, DeclContext *DC,
+                                 SourceLocation L, DeclarationName Name,
+                                 TemplateParameterList *Params, NamedDecl *Decl,
+                                 VarTemplateDecl *PrevDecl);
+
+  /// \brief Create an empty variable template node.
+  static VarTemplateDecl *CreateDeserialized(ASTContext &C, unsigned ID);
+
+  /// \brief Return the specialization with the provided arguments if it exists,
+  /// otherwise return the insertion point.
+  VarTemplateSpecializationDecl *
+  findSpecialization(const TemplateArgument *Args, unsigned NumArgs,
+                     void *&InsertPos);
+
+  /// \brief Insert the specified specialization knowing that it is not already
+  /// in. InsertPos must be obtained from findSpecialization.
+  void AddSpecialization(VarTemplateSpecializationDecl *D, void *InsertPos);
+
+  VarTemplateDecl *getCanonicalDecl() {
+    return cast<VarTemplateDecl>(RedeclarableTemplateDecl::getCanonicalDecl());
+  }
+  const VarTemplateDecl *getCanonicalDecl() const {
+    return cast<VarTemplateDecl>(RedeclarableTemplateDecl::getCanonicalDecl());
+  }
+
+  /// \brief Retrieve the previous declaration of this variable template, or
+  /// NULL if no such declaration exists.
+  VarTemplateDecl *getPreviousDecl() {
+    return cast_or_null<VarTemplateDecl>(
+        static_cast<RedeclarableTemplateDecl *>(this)->getPreviousDecl());
+  }
+
+  /// \brief Retrieve the previous declaration of this variable template, or
+  /// NULL if no such declaration exists.
+  const VarTemplateDecl *getPreviousDecl() const {
+    return cast_or_null<VarTemplateDecl>(
+            static_cast<const RedeclarableTemplateDecl *>(
+              this)->getPreviousDecl());
+  }
+
+  VarTemplateDecl *getInstantiatedFromMemberTemplate() {
+    return cast_or_null<VarTemplateDecl>(
+        RedeclarableTemplateDecl::getInstantiatedFromMemberTemplate());
+  }
+
+  /// \brief Return the partial specialization with the provided arguments if it
+  /// exists, otherwise return the insertion point.
+  VarTemplatePartialSpecializationDecl *
+  findPartialSpecialization(const TemplateArgument *Args, unsigned NumArgs,
+                            void *&InsertPos);
+
+  /// \brief Insert the specified partial specialization knowing that it is not
+  /// already in. InsertPos must be obtained from findPartialSpecialization.
+  void AddPartialSpecialization(VarTemplatePartialSpecializationDecl *D,
+                                void *InsertPos);
+
+  /// \brief Retrieve the partial specializations as an ordered list.
+  void getPartialSpecializations(
+      SmallVectorImpl<VarTemplatePartialSpecializationDecl *> &PS);
+
+  /// \brief Find a variable template partial specialization which was
+  /// instantiated
+  /// from the given member partial specialization.
+  ///
+  /// \param D a member variable template partial specialization.
+  ///
+  /// \returns the variable template partial specialization which was
+  /// instantiated
+  /// from the given member partial specialization, or NULL if no such partial
+  /// specialization exists.
+  VarTemplatePartialSpecializationDecl *findPartialSpecInstantiatedFromMember(
+      VarTemplatePartialSpecializationDecl *D);
+
+  typedef SpecIterator<VarTemplateSpecializationDecl> spec_iterator;
+
+  spec_iterator spec_begin() const {
+    return makeSpecIterator(getSpecializations(), false);
+  }
+
+  spec_iterator spec_end() const {
+    return makeSpecIterator(getSpecializations(), true);
+  }
+
+  typedef SpecIterator<VarTemplatePartialSpecializationDecl>
+  partial_spec_iterator;
+
+  partial_spec_iterator partial_spec_begin() {
+    return makeSpecIterator(getPartialSpecializations(), false);
+  }
+
+  partial_spec_iterator partial_spec_end() {
+    return makeSpecIterator(getPartialSpecializations(), true);
+  }
+
+  // Implement isa/cast/dyncast support
+  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
+  static bool classofKind(Kind K) { return K == VarTemplate; }
+
+  friend class ASTDeclReader;
+  friend class ASTDeclWriter;
+};
+
 } /* end of namespace clang */
 
 #endif
diff --git a/include/clang/AST/DeclarationName.h b/include/clang/AST/DeclarationName.h
index f28882b3bf94..00766c27c136 100644
--- a/include/clang/AST/DeclarationName.h
+++ b/include/clang/AST/DeclarationName.h
@@ -182,11 +182,16 @@ public:
 
   // operator bool() - Evaluates true when this declaration name is
   // non-empty.
-  operator bool() const {
+  LLVM_EXPLICIT operator bool() const {
     return ((Ptr & PtrMask) != 0) ||
            (reinterpret_cast<IdentifierInfo *>(Ptr & ~PtrMask));
   }
 
+  /// \brief Evaluates true when this declaration name is empty.
+  bool isEmpty() const {
+    return !*this;
+  }
+
   /// Predicate functions for querying what type of name this is.
   bool isIdentifier() const { return getStoredNameKind() == StoredIdentifier; }
   bool isObjCZeroArgSelector() const {
@@ -210,9 +215,6 @@ public:
   /// getNameAsString - Retrieve the human-readable string for this name.
   std::string getAsString() const;
 
-  /// printName - Print the human-readable name to a stream.
-  void printName(raw_ostream &OS) const;
-
   /// getAsIdentifierInfo - Retrieve the IdentifierInfo * stored in
   /// this declaration name, or NULL if this declaration name isn't a
   /// simple identifier.
@@ -302,6 +304,8 @@ public:
   void dump() const;
 };
 
+raw_ostream &operator<<(raw_ostream &OS, DeclarationName N);
+
 /// Ordering on two declaration names. If both names are identifiers,
 /// this provides a lexicographical ordering.
 inline bool operator<(DeclarationName LHS, DeclarationName RHS) {
diff --git a/include/clang/AST/EvaluatedExprVisitor.h b/include/clang/AST/EvaluatedExprVisitor.h
index 2e3cbfad919d..12c4fcc49b01 100644
--- a/include/clang/AST/EvaluatedExprVisitor.h
+++ b/include/clang/AST/EvaluatedExprVisitor.h
@@ -53,7 +53,7 @@ public:
     if (E->getCond()->isValueDependent())
       return;
     // Only the selected subexpression matters; the other one is not evaluated.
-    return this->Visit(E->getChosenSubExpr(Context));
+    return this->Visit(E->getChosenSubExpr());
   }
 
   void VisitDesignatedInitExpr(DesignatedInitExpr *E) {
diff --git a/include/clang/AST/Expr.h b/include/clang/AST/Expr.h
index 4ff1257b7dc8..f2648b9a4a04 100644
--- a/include/clang/AST/Expr.h
+++ b/include/clang/AST/Expr.h
@@ -277,7 +277,6 @@ public:
     MLV_IncompleteType,
     MLV_ConstQualified,
     MLV_ArrayType,
-    MLV_ReadonlyProperty,
     MLV_NoSetterProperty,
     MLV_MemberFunction,
     MLV_SubObjCPropertySetting,
@@ -483,21 +482,22 @@ public:
   ///
   /// Note: This does not perform the implicit conversions required by C++11
   /// [expr.const]p5.
-  bool isIntegerConstantExpr(llvm::APSInt &Result, ASTContext &Ctx,
+  bool isIntegerConstantExpr(llvm::APSInt &Result, const ASTContext &Ctx,
                              SourceLocation *Loc = 0,
                              bool isEvaluated = true) const;
-  bool isIntegerConstantExpr(ASTContext &Ctx, SourceLocation *Loc = 0) const;
+  bool isIntegerConstantExpr(const ASTContext &Ctx,
+                             SourceLocation *Loc = 0) const;
 
   /// isCXX98IntegralConstantExpr - Return true if this expression is an
   /// integral constant expression in C++98. Can only be used in C++.
-  bool isCXX98IntegralConstantExpr(ASTContext &Ctx) const;
+  bool isCXX98IntegralConstantExpr(const ASTContext &Ctx) const;
 
   /// isCXX11ConstantExpr - Return true if this expression is a constant
   /// expression in C++11. Can only be used in C++.
   ///
   /// Note: This does not perform the implicit conversions required by C++11
   /// [expr.const]p5.
-  bool isCXX11ConstantExpr(ASTContext &Ctx, APValue *Result = 0,
+  bool isCXX11ConstantExpr(const ASTContext &Ctx, APValue *Result = 0,
                            SourceLocation *Loc = 0) const;
 
   /// isPotentialConstantExpr - Return true if this function's definition
@@ -579,15 +579,14 @@ public:
   /// \brief Determine whether this expression involves a call to any function
   /// that is not trivial.
   bool hasNonTrivialCall(ASTContext &Ctx);
-  
+
   /// EvaluateKnownConstInt - Call EvaluateAsRValue and return the folded
   /// integer. This must be called on an expression that constant folds to an
   /// integer.
   llvm::APSInt EvaluateKnownConstInt(const ASTContext &Ctx,
                           SmallVectorImpl<PartialDiagnosticAt> *Diag=0) const;
-  
-  void EvaluateForOverflow(const ASTContext &Ctx,
-                           SmallVectorImpl<PartialDiagnosticAt> *Diag) const;
+
+  void EvaluateForOverflow(const ASTContext &Ctx) const;
 
   /// EvaluateAsLValue - Evaluate an expression to see if we can fold it to an
   /// lvalue with link time known address, with no side-effects.
@@ -760,10 +759,10 @@ public:
 
   /// Walk outwards from an expression we want to bind a reference to and
   /// find the expression whose lifetime needs to be extended. Record
-  /// the adjustments needed along the path.
-  const Expr *
-  skipRValueSubobjectAdjustments(
-                       SmallVectorImpl<SubobjectAdjustment> &Adjustments) const;
+  /// the LHSs of comma expressions and adjustments needed along the path.
+  const Expr *skipRValueSubobjectAdjustments(
+      SmallVectorImpl<const Expr *> &CommaLHS,
+      SmallVectorImpl<SubobjectAdjustment> &Adjustments) const;
 
   /// Skip irrelevant expressions to find what should be materialize for
   /// binding with a reference.
@@ -893,7 +892,7 @@ class DeclRefExpr : public Expr {
   bool hasFoundDecl() const { return DeclRefExprBits.HasFoundDecl; }
 
   /// \brief Helper to retrieve the optional NamedDecl through which this
-  /// reference occured.
+  /// reference occurred.
   NamedDecl *&getInternalFoundDecl() {
     assert(hasFoundDecl());
     if (hasQualifier())
@@ -902,12 +901,12 @@ class DeclRefExpr : public Expr {
   }
 
   /// \brief Helper to retrieve the optional NamedDecl through which this
-  /// reference occured.
+  /// reference occurred.
   NamedDecl *getInternalFoundDecl() const {
     return const_cast<DeclRefExpr *>(this)->getInternalFoundDecl();
   }
 
-  DeclRefExpr(ASTContext &Ctx,
+  DeclRefExpr(const ASTContext &Ctx,
               NestedNameSpecifierLoc QualifierLoc,
               SourceLocation TemplateKWLoc,
               ValueDecl *D, bool refersToEnclosingLocal,
@@ -922,7 +921,7 @@ class DeclRefExpr : public Expr {
 
   /// \brief Computes the type- and value-dependence flags for this
   /// declaration reference expression.
-  void computeDependence(ASTContext &C);
+  void computeDependence(const ASTContext &C);
 
 public:
   DeclRefExpr(ValueDecl *D, bool refersToEnclosingLocal, QualType T,
@@ -938,7 +937,7 @@ public:
     computeDependence(D->getASTContext());
   }
 
-  static DeclRefExpr *Create(ASTContext &Context,
+  static DeclRefExpr *Create(const ASTContext &Context,
                              NestedNameSpecifierLoc QualifierLoc,
                              SourceLocation TemplateKWLoc,
                              ValueDecl *D,
@@ -948,7 +947,7 @@ public:
                              NamedDecl *FoundD = 0,
                              const TemplateArgumentListInfo *TemplateArgs = 0);
 
-  static DeclRefExpr *Create(ASTContext &Context,
+  static DeclRefExpr *Create(const ASTContext &Context,
                              NestedNameSpecifierLoc QualifierLoc,
                              SourceLocation TemplateKWLoc,
                              ValueDecl *D,
@@ -959,7 +958,7 @@ public:
                              const TemplateArgumentListInfo *TemplateArgs = 0);
 
   /// \brief Construct an empty declaration reference expression.
-  static DeclRefExpr *CreateEmpty(ASTContext &Context,
+  static DeclRefExpr *CreateEmpty(const ASTContext &Context,
                                   bool HasQualifier,
                                   bool HasFoundDecl,
                                   bool HasTemplateKWAndArgsInfo,
@@ -1000,7 +999,7 @@ public:
     return getInternalQualifierLoc();
   }
 
-  /// \brief Get the NamedDecl through which this reference occured.
+  /// \brief Get the NamedDecl through which this reference occurred.
   ///
   /// This Decl may be different from the ValueDecl actually referred to in the
   /// presence of using declarations, etc. It always returns non-NULL, and may
@@ -1151,6 +1150,7 @@ public:
     Func,
     Function,
     LFunction,  // Same as Function, but as wide string.
+    FuncDName,
     PrettyFunction,
     /// PrettyFunctionNoVirtual - The same as PrettyFunction, except that the
     /// 'virtual' keyword is omitted for virtual member functions.
@@ -1221,13 +1221,15 @@ protected:
     else
       return llvm::APInt(BitWidth, VAL);
   }
-  void setIntValue(ASTContext &C, const llvm::APInt &Val);
+  void setIntValue(const ASTContext &C, const llvm::APInt &Val);
 };
 
 class APIntStorage : private APNumericStorage {
 public:
   llvm::APInt getValue() const { return getIntValue(); }
-  void setValue(ASTContext &C, const llvm::APInt &Val) { setIntValue(C, Val); }
+  void setValue(const ASTContext &C, const llvm::APInt &Val) {
+    setIntValue(C, Val);
+  }
 };
 
 class APFloatStorage : private APNumericStorage {
@@ -1235,7 +1237,7 @@ public:
   llvm::APFloat getValue(const llvm::fltSemantics &Semantics) const {
     return llvm::APFloat(Semantics, getIntValue());
   }
-  void setValue(ASTContext &C, const llvm::APFloat &Val) {
+  void setValue(const ASTContext &C, const llvm::APFloat &Val) {
     setIntValue(C, Val.bitcastToAPInt());
   }
 };
@@ -1250,17 +1252,17 @@ class IntegerLiteral : public Expr, public APIntStorage {
 public:
   // type should be IntTy, LongTy, LongLongTy, UnsignedIntTy, UnsignedLongTy,
   // or UnsignedLongLongTy
-  IntegerLiteral(ASTContext &C, const llvm::APInt &V, QualType type,
+  IntegerLiteral(const ASTContext &C, const llvm::APInt &V, QualType type,
                  SourceLocation l);
 
   /// \brief Returns a new integer literal with value 'V' and type 'type'.
   /// \param type - either IntTy, LongTy, LongLongTy, UnsignedIntTy,
   /// UnsignedLongTy, or UnsignedLongLongTy which should match the size of V
   /// \param V - the value that the returned integer literal contains.
-  static IntegerLiteral *Create(ASTContext &C, const llvm::APInt &V,
+  static IntegerLiteral *Create(const ASTContext &C, const llvm::APInt &V,
                                 QualType type, SourceLocation l);
   /// \brief Returns a new empty integer literal.
-  static IntegerLiteral *Create(ASTContext &C, EmptyShell Empty);
+  static IntegerLiteral *Create(const ASTContext &C, EmptyShell Empty);
 
   SourceLocation getLocStart() const LLVM_READONLY { return Loc; }
   SourceLocation getLocEnd() const LLVM_READONLY { return Loc; }
@@ -1328,21 +1330,21 @@ public:
 class FloatingLiteral : public Expr, private APFloatStorage {
   SourceLocation Loc;
 
-  FloatingLiteral(ASTContext &C, const llvm::APFloat &V, bool isexact,
+  FloatingLiteral(const ASTContext &C, const llvm::APFloat &V, bool isexact,
                   QualType Type, SourceLocation L);
 
   /// \brief Construct an empty floating-point literal.
-  explicit FloatingLiteral(ASTContext &C, EmptyShell Empty);
+  explicit FloatingLiteral(const ASTContext &C, EmptyShell Empty);
 
 public:
-  static FloatingLiteral *Create(ASTContext &C, const llvm::APFloat &V,
+  static FloatingLiteral *Create(const ASTContext &C, const llvm::APFloat &V,
                                  bool isexact, QualType Type, SourceLocation L);
-  static FloatingLiteral *Create(ASTContext &C, EmptyShell Empty);
+  static FloatingLiteral *Create(const ASTContext &C, EmptyShell Empty);
 
   llvm::APFloat getValue() const {
     return APFloatStorage::getValue(getSemantics());
   }
-  void setValue(ASTContext &C, const llvm::APFloat &Val) {
+  void setValue(const ASTContext &C, const llvm::APFloat &Val) {
     assert(&getSemantics() == &Val.getSemantics() && "Inconsistent semantics");
     APFloatStorage::setValue(C, Val);
   }
@@ -1420,7 +1422,7 @@ public:
 };
 
 /// StringLiteral - This represents a string literal expression, e.g. "foo"
-/// or L"bar" (wide strings).  The actual string is returned by getStrData()
+/// or L"bar" (wide strings).  The actual string is returned by getBytes()
 /// is NOT null-terminated, and the length of the string is determined by
 /// calling getByteLength().  The C type for a string is always a
 /// ConstantArrayType.  In C++, the char type is const qualified, in C it is
@@ -1469,19 +1471,19 @@ private:
 public:
   /// This is the "fully general" constructor that allows representation of
   /// strings formed from multiple concatenated tokens.
-  static StringLiteral *Create(ASTContext &C, StringRef Str, StringKind Kind,
-                               bool Pascal, QualType Ty,
+  static StringLiteral *Create(const ASTContext &C, StringRef Str,
+                               StringKind Kind, bool Pascal, QualType Ty,
                                const SourceLocation *Loc, unsigned NumStrs);
 
   /// Simple constructor for string literals made from one token.
-  static StringLiteral *Create(ASTContext &C, StringRef Str, StringKind Kind,
-                               bool Pascal, QualType Ty,
+  static StringLiteral *Create(const ASTContext &C, StringRef Str,
+                               StringKind Kind, bool Pascal, QualType Ty,
                                SourceLocation Loc) {
     return Create(C, Str, Kind, Pascal, Ty, &Loc, 1);
   }
 
   /// \brief Construct an empty string literal.
-  static StringLiteral *CreateEmpty(ASTContext &C, unsigned NumStrs);
+  static StringLiteral *CreateEmpty(const ASTContext &C, unsigned NumStrs);
 
   StringRef getString() const {
     assert(CharByteWidth==1
@@ -1520,7 +1522,7 @@ public:
   unsigned getCharByteWidth() const { return CharByteWidth; }
 
   /// \brief Sets the string data to the given string data.
-  void setString(ASTContext &C, StringRef Str,
+  void setString(const ASTContext &C, StringRef Str,
                  StringKind Kind, bool IsPascal);
 
   StringKind getKind() const { return static_cast<StringKind>(Kind); }
@@ -1853,7 +1855,7 @@ private:
   // Number of sub-expressions (i.e. array subscript expressions).
   unsigned NumExprs;
 
-  OffsetOfExpr(ASTContext &C, QualType type,
+  OffsetOfExpr(const ASTContext &C, QualType type,
                SourceLocation OperatorLoc, TypeSourceInfo *tsi,
                ArrayRef<OffsetOfNode> comps, ArrayRef<Expr*> exprs,
                SourceLocation RParenLoc);
@@ -1864,12 +1866,12 @@ private:
 
 public:
 
-  static OffsetOfExpr *Create(ASTContext &C, QualType type,
+  static OffsetOfExpr *Create(const ASTContext &C, QualType type,
                               SourceLocation OperatorLoc, TypeSourceInfo *tsi,
                               ArrayRef<OffsetOfNode> comps,
                               ArrayRef<Expr*> exprs, SourceLocation RParenLoc);
 
-  static OffsetOfExpr *CreateEmpty(ASTContext &C,
+  static OffsetOfExpr *CreateEmpty(const ASTContext &C,
                                    unsigned NumComps, unsigned NumExprs);
 
   /// getOperatorLoc - Return the location of the operator.
@@ -2133,10 +2135,11 @@ class CallExpr : public Expr {
 
 protected:
   // These versions of the constructor are for derived classes.
-  CallExpr(ASTContext& C, StmtClass SC, Expr *fn, unsigned NumPreArgs,
+  CallExpr(const ASTContext& C, StmtClass SC, Expr *fn, unsigned NumPreArgs,
            ArrayRef<Expr*> args, QualType t, ExprValueKind VK,
            SourceLocation rparenloc);
-  CallExpr(ASTContext &C, StmtClass SC, unsigned NumPreArgs, EmptyShell Empty);
+  CallExpr(const ASTContext &C, StmtClass SC, unsigned NumPreArgs,
+           EmptyShell Empty);
 
   Stmt *getPreArg(unsigned i) {
     assert(i < getNumPreArgs() && "Prearg access out of range!");
@@ -2154,11 +2157,11 @@ protected:
   unsigned getNumPreArgs() const { return CallExprBits.NumPreArgs; }
 
 public:
-  CallExpr(ASTContext& C, Expr *fn, ArrayRef<Expr*> args, QualType t,
+  CallExpr(const ASTContext& C, Expr *fn, ArrayRef<Expr*> args, QualType t,
            ExprValueKind VK, SourceLocation rparenloc);
 
   /// \brief Build an empty call expression.
-  CallExpr(ASTContext &C, StmtClass SC, EmptyShell Empty);
+  CallExpr(const ASTContext &C, StmtClass SC, EmptyShell Empty);
 
   const Expr *getCallee() const { return cast<Expr>(SubExprs[FN]); }
   Expr *getCallee() { return cast<Expr>(SubExprs[FN]); }
@@ -2206,7 +2209,7 @@ public:
   /// setNumArgs - This changes the number of arguments present in this call.
   /// Any orphaned expressions are deleted by this, and any new operands are set
   /// to null.
-  void setNumArgs(ASTContext& C, unsigned NumArgs);
+  void setNumArgs(const ASTContext& C, unsigned NumArgs);
 
   typedef ExprIterator arg_iterator;
   typedef ConstExprIterator const_arg_iterator;
@@ -2360,7 +2363,7 @@ public:
       HasQualifierOrFoundDecl(false), HasTemplateKWAndArgsInfo(false),
       HadMultipleCandidates(false) {}
 
-  static MemberExpr *Create(ASTContext &C, Expr *base, bool isarrow,
+  static MemberExpr *Create(const ASTContext &C, Expr *base, bool isarrow,
                             NestedNameSpecifierLoc QualifierLoc,
                             SourceLocation TemplateKWLoc,
                             ValueDecl *memberdecl, DeclAccessPair founddecl,
@@ -2747,12 +2750,13 @@ public:
     : CastExpr(ImplicitCastExprClass, ty, VK, kind, op, 0) {
   }
 
-  static ImplicitCastExpr *Create(ASTContext &Context, QualType T,
+  static ImplicitCastExpr *Create(const ASTContext &Context, QualType T,
                                   CastKind Kind, Expr *Operand,
                                   const CXXCastPath *BasePath,
                                   ExprValueKind Cat);
 
-  static ImplicitCastExpr *CreateEmpty(ASTContext &Context, unsigned PathSize);
+  static ImplicitCastExpr *CreateEmpty(const ASTContext &Context,
+                                       unsigned PathSize);
 
   SourceLocation getLocStart() const LLVM_READONLY {
     return getSubExpr()->getLocStart();
@@ -2838,13 +2842,14 @@ class CStyleCastExpr : public ExplicitCastExpr {
     : ExplicitCastExpr(CStyleCastExprClass, Shell, PathSize) { }
 
 public:
-  static CStyleCastExpr *Create(ASTContext &Context, QualType T,
+  static CStyleCastExpr *Create(const ASTContext &Context, QualType T,
                                 ExprValueKind VK, CastKind K,
                                 Expr *Op, const CXXCastPath *BasePath,
                                 TypeSourceInfo *WrittenTy, SourceLocation L,
                                 SourceLocation R);
 
-  static CStyleCastExpr *CreateEmpty(ASTContext &Context, unsigned PathSize);
+  static CStyleCastExpr *CreateEmpty(const ASTContext &Context,
+                                     unsigned PathSize);
 
   SourceLocation getLParenLoc() const { return LPLoc; }
   void setLParenLoc(SourceLocation L) { LPLoc = L; }
@@ -3412,7 +3417,7 @@ class ShuffleVectorExpr : public Expr {
   unsigned NumExprs;
 
 public:
-  ShuffleVectorExpr(ASTContext &C, ArrayRef<Expr*> args, QualType Type,
+  ShuffleVectorExpr(const ASTContext &C, ArrayRef<Expr*> args, QualType Type,
                     SourceLocation BLoc, SourceLocation RP);
 
   /// \brief Build an empty vector-shuffle expression.
@@ -3450,11 +3455,11 @@ public:
     return cast<Expr>(SubExprs[Index]);
   }
 
-  void setExprs(ASTContext &C, Expr ** Exprs, unsigned NumExprs);
+  void setExprs(const ASTContext &C, ArrayRef<Expr *> Exprs);
 
-  unsigned getShuffleMaskIdx(ASTContext &Ctx, unsigned N) const {
+  llvm::APSInt getShuffleMaskIdx(const ASTContext &Ctx, unsigned N) const {
     assert((N < NumExprs - 2) && "Shuffle idx out of range!");
-    return getExpr(N+2)->EvaluateKnownConstInt(Ctx).getZExtValue();
+    return getExpr(N+2)->EvaluateKnownConstInt(Ctx);
   }
 
   // Iterators
@@ -3463,6 +3468,60 @@ public:
   }
 };
 
+/// ConvertVectorExpr - Clang builtin function __builtin_convertvector
+/// This AST node provides support for converting a vector type to another
+/// vector type of the same arity.
+class ConvertVectorExpr : public Expr {
+private:
+  Stmt *SrcExpr;
+  TypeSourceInfo *TInfo;
+  SourceLocation BuiltinLoc, RParenLoc;
+
+  friend class ASTReader;
+  friend class ASTStmtReader;
+  explicit ConvertVectorExpr(EmptyShell Empty) : Expr(ConvertVectorExprClass, Empty) {}
+
+public:
+  ConvertVectorExpr(Expr* SrcExpr, TypeSourceInfo *TI, QualType DstType,
+             ExprValueKind VK, ExprObjectKind OK,
+             SourceLocation BuiltinLoc, SourceLocation RParenLoc)
+    : Expr(ConvertVectorExprClass, DstType, VK, OK,
+           DstType->isDependentType(),
+           DstType->isDependentType() || SrcExpr->isValueDependent(),
+           (DstType->isInstantiationDependentType() ||
+            SrcExpr->isInstantiationDependent()),
+           (DstType->containsUnexpandedParameterPack() ||
+            SrcExpr->containsUnexpandedParameterPack())),
+  SrcExpr(SrcExpr), TInfo(TI), BuiltinLoc(BuiltinLoc), RParenLoc(RParenLoc) {}
+
+  /// getSrcExpr - Return the Expr to be converted.
+  Expr *getSrcExpr() const { return cast<Expr>(SrcExpr); }
+
+  /// getTypeSourceInfo - Return the destination type.
+  TypeSourceInfo *getTypeSourceInfo() const {
+    return TInfo;
+  }
+  void setTypeSourceInfo(TypeSourceInfo *ti) {
+    TInfo = ti;
+  }
+
+  /// getBuiltinLoc - Return the location of the __builtin_convertvector token.
+  SourceLocation getBuiltinLoc() const { return BuiltinLoc; }
+
+  /// getRParenLoc - Return the location of final right parenthesis.
+  SourceLocation getRParenLoc() const { return RParenLoc; }
+
+  SourceLocation getLocStart() const LLVM_READONLY { return BuiltinLoc; }
+  SourceLocation getLocEnd() const LLVM_READONLY { return RParenLoc; }
+
+  static bool classof(const Stmt *T) {
+    return T->getStmtClass() == ConvertVectorExprClass;
+  }
+
+  // Iterators
+  child_range children() { return child_range(&SrcExpr, &SrcExpr+1); }
+};
+
 /// ChooseExpr - GNU builtin-in function __builtin_choose_expr.
 /// This AST node is similar to the conditional operator (?:) in C, with
 /// the following exceptions:
@@ -3476,10 +3535,12 @@ class ChooseExpr : public Expr {
   enum { COND, LHS, RHS, END_EXPR };
   Stmt* SubExprs[END_EXPR]; // Left/Middle/Right hand sides.
   SourceLocation BuiltinLoc, RParenLoc;
+  bool CondIsTrue;
 public:
   ChooseExpr(SourceLocation BLoc, Expr *cond, Expr *lhs, Expr *rhs,
              QualType t, ExprValueKind VK, ExprObjectKind OK,
-             SourceLocation RP, bool TypeDependent, bool ValueDependent)
+             SourceLocation RP, bool condIsTrue,
+             bool TypeDependent, bool ValueDependent)
     : Expr(ChooseExprClass, t, VK, OK, TypeDependent, ValueDependent,
            (cond->isInstantiationDependent() ||
             lhs->isInstantiationDependent() ||
@@ -3487,7 +3548,7 @@ public:
            (cond->containsUnexpandedParameterPack() ||
             lhs->containsUnexpandedParameterPack() ||
             rhs->containsUnexpandedParameterPack())),
-      BuiltinLoc(BLoc), RParenLoc(RP) {
+      BuiltinLoc(BLoc), RParenLoc(RP), CondIsTrue(condIsTrue) {
       SubExprs[COND] = cond;
       SubExprs[LHS] = lhs;
       SubExprs[RHS] = rhs;
@@ -3498,12 +3559,21 @@ public:
 
   /// isConditionTrue - Return whether the condition is true (i.e. not
   /// equal to zero).
-  bool isConditionTrue(const ASTContext &C) const;
+  bool isConditionTrue() const {
+    assert(!isConditionDependent() &&
+           "Dependent condition isn't true or false");
+    return CondIsTrue;
+  }
+  void setIsConditionTrue(bool isTrue) { CondIsTrue = isTrue; }
+
+  bool isConditionDependent() const {
+    return getCond()->isTypeDependent() || getCond()->isValueDependent();
+  }
 
   /// getChosenSubExpr - Return the subexpression chosen according to the
   /// condition.
-  Expr *getChosenSubExpr(const ASTContext &C) const {
-    return isConditionTrue(C) ? getLHS() : getRHS();
+  Expr *getChosenSubExpr() const {
+    return isConditionTrue() ? getLHS() : getRHS();
   }
 
   Expr *getCond() const { return cast<Expr>(SubExprs[COND]); }
@@ -3663,7 +3733,7 @@ class InitListExpr : public Expr {
   SourceLocation LBraceLoc, RBraceLoc;
 
   /// The alternative form of the initializer list (if it exists).
-  /// The int part of the pair stores whether this initalizer list is
+  /// The int part of the pair stores whether this initializer list is
   /// in semantic form. If not null, the pointer points to:
   ///   - the syntactic form, if this is in semantic form;
   ///   - the semantic form, if this is in syntactic form.
@@ -3679,7 +3749,7 @@ class InitListExpr : public Expr {
   llvm::PointerUnion<Expr *, FieldDecl *> ArrayFillerOrUnionFieldInit;
 
 public:
-  InitListExpr(ASTContext &C, SourceLocation lbraceloc,
+  InitListExpr(const ASTContext &C, SourceLocation lbraceloc,
                ArrayRef<Expr*> initExprs, SourceLocation rbraceloc);
 
   /// \brief Build an empty initializer list.
@@ -3707,7 +3777,7 @@ public:
   }
 
   /// \brief Reserve space for some number of initializers.
-  void reserveInits(ASTContext &C, unsigned NumInits);
+  void reserveInits(const ASTContext &C, unsigned NumInits);
 
   /// @brief Specify the number of initializers
   ///
@@ -3715,7 +3785,7 @@ public:
   /// initializers will be destroyed. If there are fewer than @p
   /// NumInits initializers, NULL expressions will be added for the
   /// unknown initializers.
-  void resizeInits(ASTContext &Context, unsigned NumInits);
+  void resizeInits(const ASTContext &Context, unsigned NumInits);
 
   /// @brief Updates the initializer at index @p Init with the new
   /// expression @p expr, and returns the old expression at that
@@ -3724,7 +3794,7 @@ public:
   /// When @p Init is out of range for this initializer list, the
   /// initializer list will be extended with NULL expressions to
   /// accommodate the new entry.
-  Expr *updateInit(ASTContext &C, unsigned Init, Expr *expr);
+  Expr *updateInit(const ASTContext &C, unsigned Init, Expr *expr);
 
   /// \brief If this initializer list initializes an array with more elements
   /// than there are initializers in the list, specifies an expression to be
@@ -3754,6 +3824,10 @@ public:
     return const_cast<InitListExpr *>(this)->getInitializedFieldInUnion();
   }
   void setInitializedFieldInUnion(FieldDecl *FD) {
+    assert((FD == 0
+            || getInitializedFieldInUnion() == 0
+            || getInitializedFieldInUnion() == FD)
+           && "Only one field of a union may be initialized at a time!");
     ArrayFillerOrUnionFieldInit = FD;
   }
 
@@ -3794,13 +3868,6 @@ public:
     InitListExprBits.HadArrayRangeDesignator = ARD;
   }
 
-  bool initializesStdInitializerList() const {
-    return InitListExprBits.InitializesStdInitializerList != 0;
-  }
-  void setInitializesStdInitializerList(bool ISIL = true) {
-    InitListExprBits.InitializesStdInitializerList = ISIL;
-  }
-
   SourceLocation getLocStart() const LLVM_READONLY;
   SourceLocation getLocEnd() const LLVM_READONLY;
 
@@ -3851,7 +3918,7 @@ public:
 /// The InitListExpr contains three DesignatedInitExprs, the first of
 /// which covers @c [2].y=1.0. This DesignatedInitExpr will have two
 /// designators, one array designator for @c [2] followed by one field
-/// designator for @c .y. The initalization expression will be 1.0.
+/// designator for @c .y. The initialization expression will be 1.0.
 class DesignatedInitExpr : public Expr {
 public:
   /// \brief Forward declaration of the Designator class.
@@ -3879,7 +3946,7 @@ private:
   Designator *Designators;
 
 
-  DesignatedInitExpr(ASTContext &C, QualType Ty, unsigned NumDesignators,
+  DesignatedInitExpr(const ASTContext &C, QualType Ty, unsigned NumDesignators,
                      const Designator *Designators,
                      SourceLocation EqualOrColonLoc, bool GNUSyntax,
                      ArrayRef<Expr*> IndexExprs, Expr *Init);
@@ -4041,13 +4108,15 @@ public:
     }
   };
 
-  static DesignatedInitExpr *Create(ASTContext &C, Designator *Designators,
+  static DesignatedInitExpr *Create(const ASTContext &C,
+                                    Designator *Designators,
                                     unsigned NumDesignators,
                                     ArrayRef<Expr*> IndexExprs,
                                     SourceLocation EqualOrColonLoc,
                                     bool GNUSyntax, Expr *Init);
 
-  static DesignatedInitExpr *CreateEmpty(ASTContext &C, unsigned NumIndexExprs);
+  static DesignatedInitExpr *CreateEmpty(const ASTContext &C,
+                                         unsigned NumIndexExprs);
 
   /// @brief Returns the number of designators in this initializer.
   unsigned size() const { return NumDesignators; }
@@ -4085,7 +4154,7 @@ public:
 
   Designator *getDesignator(unsigned Idx) { return &designators_begin()[Idx]; }
 
-  void setDesignators(ASTContext &C, const Designator *Desigs,
+  void setDesignators(const ASTContext &C, const Designator *Desigs,
                       unsigned NumDesigs);
 
   Expr *getArrayIndex(const Designator &D) const;
@@ -4133,8 +4202,8 @@ public:
 
   /// \brief Replaces the designator at index @p Idx with the series
   /// of designators in [First, Last).
-  void ExpandDesignator(ASTContext &C, unsigned Idx, const Designator *First,
-                        const Designator *Last);
+  void ExpandDesignator(const ASTContext &C, unsigned Idx,
+                        const Designator *First, const Designator *Last);
 
   SourceRange getDesignatorsSourceRange() const;
 
@@ -4188,8 +4257,8 @@ class ParenListExpr : public Expr {
   SourceLocation LParenLoc, RParenLoc;
 
 public:
-  ParenListExpr(ASTContext& C, SourceLocation lparenloc, ArrayRef<Expr*> exprs,
-                SourceLocation rparenloc);
+  ParenListExpr(const ASTContext& C, SourceLocation lparenloc,
+                ArrayRef<Expr*> exprs, SourceLocation rparenloc);
 
   /// \brief Build an empty paren list.
   explicit ParenListExpr(EmptyShell Empty) : Expr(ParenListExprClass, Empty) { }
@@ -4262,7 +4331,7 @@ class GenericSelectionExpr : public Expr {
   SourceLocation GenericLoc, DefaultLoc, RParenLoc;
 
 public:
-  GenericSelectionExpr(ASTContext &Context,
+  GenericSelectionExpr(const ASTContext &Context,
                        SourceLocation GenericLoc, Expr *ControllingExpr,
                        ArrayRef<TypeSourceInfo*> AssocTypes,
                        ArrayRef<Expr*> AssocExprs,
@@ -4271,7 +4340,7 @@ public:
                        unsigned ResultIndex);
 
   /// This constructor is used in the result-dependent case.
-  GenericSelectionExpr(ASTContext &Context,
+  GenericSelectionExpr(const ASTContext &Context,
                        SourceLocation GenericLoc, Expr *ControllingExpr,
                        ArrayRef<TypeSourceInfo*> AssocTypes,
                        ArrayRef<Expr*> AssocExprs,
@@ -4450,7 +4519,7 @@ public:
 /// AsTypeExpr - Clang builtin function __builtin_astype [OpenCL 6.2.4.2]
 /// This AST node provides support for reinterpreting a type to another
 /// type of the same size.
-class AsTypeExpr : public Expr { // Should this be an ExplicitCastExpr?
+class AsTypeExpr : public Expr {
 private:
   Stmt *SrcExpr;
   SourceLocation BuiltinLoc, RParenLoc;
@@ -4552,13 +4621,13 @@ class PseudoObjectExpr : public Expr {
 public:
   /// NoResult - A value for the result index indicating that there is
   /// no semantic result.
-  enum { NoResult = ~0U };
+  enum LLVM_ENUM_INT_TYPE(unsigned) { NoResult = ~0U };
 
-  static PseudoObjectExpr *Create(ASTContext &Context, Expr *syntactic,
+  static PseudoObjectExpr *Create(const ASTContext &Context, Expr *syntactic,
                                   ArrayRef<Expr*> semantic,
                                   unsigned resultIndex);
 
-  static PseudoObjectExpr *Create(ASTContext &Context, EmptyShell shell,
+  static PseudoObjectExpr *Create(const ASTContext &Context, EmptyShell shell,
                                   unsigned numSemanticExprs);
 
   /// Return the syntactic form of this expression, i.e. the
diff --git a/include/clang/AST/ExprCXX.h b/include/clang/AST/ExprCXX.h
index 91e5b21eacff..6356ee7aee63 100644
--- a/include/clang/AST/ExprCXX.h
+++ b/include/clang/AST/ExprCXX.h
@@ -6,9 +6,10 @@
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
-//
-//  This file defines the Expr interface and subclasses for C++ expressions.
-//
+///
+/// \file
+/// \brief Defines the clang::Expr interface and subclasses for C++ expressions.
+///
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_CLANG_AST_EXPRCXX_H
@@ -74,15 +75,15 @@ public:
     CallExpr(C, CXXOperatorCallExprClass, Empty) { }
 
 
-  /// getOperator - Returns the kind of overloaded operator that this
+  /// \brief Returns the kind of overloaded operator that this
   /// expression refers to.
   OverloadedOperatorKind getOperator() const { return Operator; }
 
-  /// getOperatorLoc - Returns the location of the operator symbol in
-  /// the expression. When @c getOperator()==OO_Call, this is the
-  /// location of the right parentheses; when @c
-  /// getOperator()==OO_Subscript, this is the location of the right
-  /// bracket.
+  /// \brief Returns the location of the operator symbol in the expression.
+  ///
+  /// When \c getOperator()==OO_Call, this is the location of the right
+  /// parentheses; when \c getOperator()==OO_Subscript, this is the location
+  /// of the right bracket.
   SourceLocation getOperatorLoc() const { return getRParenLoc(); }
 
   SourceLocation getLocStart() const LLVM_READONLY { return Range.getBegin(); }
@@ -105,7 +106,7 @@ public:
   friend class ASTStmtWriter;
 };
 
-/// CXXMemberCallExpr - Represents a call to a member function that
+/// Represents a call to a member function that
 /// may be written either with member call syntax (e.g., "obj.func()"
 /// or "objptr->func()") or with normal function-call syntax
 /// ("func()") within a member function that ends up calling a member
@@ -122,18 +123,19 @@ public:
   CXXMemberCallExpr(ASTContext &C, EmptyShell Empty)
     : CallExpr(C, CXXMemberCallExprClass, Empty) { }
 
-  /// getImplicitObjectArgument - Retrieves the implicit object
-  /// argument for the member call. For example, in "x.f(5)", this
-  /// operation would return "x".
+  /// \brief Retrieves the implicit object argument for the member call.
+  ///
+  /// For example, in "x.f(5)", this returns the sub-expression "x".
   Expr *getImplicitObjectArgument() const;
 
-  /// Retrieves the declaration of the called method.
+  /// \brief Retrieves the declaration of the called method.
   CXXMethodDecl *getMethodDecl() const;
 
-  /// getRecordDecl - Retrieves the CXXRecordDecl for the underlying type of
-  /// the implicit object argument. Note that this is may not be the same
-  /// declaration as that of the class context of the CXXMethodDecl which this
-  /// function is calling.
+  /// \brief Retrieves the CXXRecordDecl for the underlying type of
+  /// the implicit object argument.
+  ///
+  /// Note that this is may not be the same declaration as that of the class
+  /// context of the CXXMethodDecl which this function is calling.
   /// FIXME: Returns 0 for member pointer call exprs.
   CXXRecordDecl *getRecordDecl() const;
 
@@ -142,7 +144,7 @@ public:
   }
 };
 
-/// CUDAKernelCallExpr - Represents a call to a CUDA kernel function.
+/// \brief Represents a call to a CUDA kernel function.
 class CUDAKernelCallExpr : public CallExpr {
 private:
   enum { CONFIG, END_PREARG };
@@ -169,13 +171,12 @@ public:
   }
 };
 
-/// CXXNamedCastExpr - Abstract class common to all of the C++ "named"
-/// casts, @c static_cast, @c dynamic_cast, @c reinterpret_cast, or @c
-/// const_cast.
+/// \brief Abstract class common to all of the C++ "named"/"keyword" casts.
 ///
 /// This abstract class is inherited by all of the classes
-/// representing "named" casts, e.g., CXXStaticCastExpr,
-/// CXXDynamicCastExpr, CXXReinterpretCastExpr, and CXXConstCastExpr.
+/// representing "named" casts: CXXStaticCastExpr for \c static_cast,
+/// CXXDynamicCastExpr for \c dynamic_cast, CXXReinterpretCastExpr for
+/// reinterpret_cast, and CXXConstCastExpr for \c const_cast.
 class CXXNamedCastExpr : public ExplicitCastExpr {
 private:
   SourceLocation Loc; // the location of the casting op
@@ -200,7 +201,7 @@ public:
   const char *getCastName() const;
 
   /// \brief Retrieve the location of the cast operator keyword, e.g.,
-  /// "static_cast".
+  /// \c static_cast.
   SourceLocation getOperatorLoc() const { return Loc; }
 
   /// \brief Retrieve the location of the closing parenthesis.
@@ -223,11 +224,10 @@ public:
   }
 };
 
-/// CXXStaticCastExpr - A C++ @c static_cast expression
-/// (C++ [expr.static.cast]).
+/// \brief A C++ \c static_cast expression (C++ [expr.static.cast]).
 ///
 /// This expression node represents a C++ static cast, e.g.,
-/// @c static_cast<int>(1.0).
+/// \c static_cast<int>(1.0).
 class CXXStaticCastExpr : public CXXNamedCastExpr {
   CXXStaticCastExpr(QualType ty, ExprValueKind vk, CastKind kind, Expr *op,
                     unsigned pathSize, TypeSourceInfo *writtenTy,
@@ -240,13 +240,13 @@ class CXXStaticCastExpr : public CXXNamedCastExpr {
     : CXXNamedCastExpr(CXXStaticCastExprClass, Empty, PathSize) { }
 
 public:
-  static CXXStaticCastExpr *Create(ASTContext &Context, QualType T,
+  static CXXStaticCastExpr *Create(const ASTContext &Context, QualType T,
                                    ExprValueKind VK, CastKind K, Expr *Op,
                                    const CXXCastPath *Path,
                                    TypeSourceInfo *Written, SourceLocation L,
                                    SourceLocation RParenLoc,
                                    SourceRange AngleBrackets);
-  static CXXStaticCastExpr *CreateEmpty(ASTContext &Context,
+  static CXXStaticCastExpr *CreateEmpty(const ASTContext &Context,
                                         unsigned PathSize);
 
   static bool classof(const Stmt *T) {
@@ -254,12 +254,11 @@ public:
   }
 };
 
-/// CXXDynamicCastExpr - A C++ @c dynamic_cast expression
-/// (C++ [expr.dynamic.cast]), which may perform a run-time check to
-/// determine how to perform the type cast.
+/// \brief A C++ @c dynamic_cast expression (C++ [expr.dynamic.cast]).
 ///
 /// This expression node represents a dynamic cast, e.g.,
-/// @c dynamic_cast<Derived*>(BasePtr).
+/// \c dynamic_cast<Derived*>(BasePtr). Such a cast may perform a run-time
+/// check to determine how to perform the type conversion.
 class CXXDynamicCastExpr : public CXXNamedCastExpr {
   CXXDynamicCastExpr(QualType ty, ExprValueKind VK, CastKind kind,
                      Expr *op, unsigned pathSize, TypeSourceInfo *writtenTy,
@@ -272,14 +271,14 @@ class CXXDynamicCastExpr : public CXXNamedCastExpr {
     : CXXNamedCastExpr(CXXDynamicCastExprClass, Empty, pathSize) { }
 
 public:
-  static CXXDynamicCastExpr *Create(ASTContext &Context, QualType T,
+  static CXXDynamicCastExpr *Create(const ASTContext &Context, QualType T,
                                     ExprValueKind VK, CastKind Kind, Expr *Op,
                                     const CXXCastPath *Path,
                                     TypeSourceInfo *Written, SourceLocation L,
                                     SourceLocation RParenLoc,
                                     SourceRange AngleBrackets);
 
-  static CXXDynamicCastExpr *CreateEmpty(ASTContext &Context,
+  static CXXDynamicCastExpr *CreateEmpty(const ASTContext &Context,
                                          unsigned pathSize);
 
   bool isAlwaysNull() const;
@@ -289,12 +288,14 @@ public:
   }
 };
 
-/// CXXReinterpretCastExpr - A C++ @c reinterpret_cast expression (C++
-/// [expr.reinterpret.cast]), which provides a differently-typed view
-/// of a value but performs no actual work at run time.
+/// \brief A C++ @c reinterpret_cast expression (C++ [expr.reinterpret.cast]).
 ///
 /// This expression node represents a reinterpret cast, e.g.,
 /// @c reinterpret_cast<int>(VoidPtr).
+///
+/// A reinterpret_cast provides a differently-typed view of a value but
+/// (in Clang, as in most C++ implementations) performs no actual work at
+/// run time.
 class CXXReinterpretCastExpr : public CXXNamedCastExpr {
   CXXReinterpretCastExpr(QualType ty, ExprValueKind vk, CastKind kind,
                          Expr *op, unsigned pathSize,
@@ -308,13 +309,13 @@ class CXXReinterpretCastExpr : public CXXNamedCastExpr {
     : CXXNamedCastExpr(CXXReinterpretCastExprClass, Empty, pathSize) { }
 
 public:
-  static CXXReinterpretCastExpr *Create(ASTContext &Context, QualType T,
+  static CXXReinterpretCastExpr *Create(const ASTContext &Context, QualType T,
                                         ExprValueKind VK, CastKind Kind,
                                         Expr *Op, const CXXCastPath *Path,
                                  TypeSourceInfo *WrittenTy, SourceLocation L,
                                         SourceLocation RParenLoc,
                                         SourceRange AngleBrackets);
-  static CXXReinterpretCastExpr *CreateEmpty(ASTContext &Context,
+  static CXXReinterpretCastExpr *CreateEmpty(const ASTContext &Context,
                                              unsigned pathSize);
 
   static bool classof(const Stmt *T) {
@@ -322,11 +323,13 @@ public:
   }
 };
 
-/// CXXConstCastExpr - A C++ @c const_cast expression (C++ [expr.const.cast]),
-/// which can remove type qualifiers but does not change the underlying value.
+/// \brief A C++ \c const_cast expression (C++ [expr.const.cast]).
 ///
 /// This expression node represents a const cast, e.g.,
-/// @c const_cast<char*>(PtrToConstChar).
+/// \c const_cast<char*>(PtrToConstChar).
+///
+/// A const_cast can remove type qualifiers but does not change the underlying
+/// value.
 class CXXConstCastExpr : public CXXNamedCastExpr {
   CXXConstCastExpr(QualType ty, ExprValueKind VK, Expr *op,
                    TypeSourceInfo *writtenTy, SourceLocation l,
@@ -338,19 +341,19 @@ class CXXConstCastExpr : public CXXNamedCastExpr {
     : CXXNamedCastExpr(CXXConstCastExprClass, Empty, 0) { }
 
 public:
-  static CXXConstCastExpr *Create(ASTContext &Context, QualType T,
+  static CXXConstCastExpr *Create(const ASTContext &Context, QualType T,
                                   ExprValueKind VK, Expr *Op,
                                   TypeSourceInfo *WrittenTy, SourceLocation L,
                                   SourceLocation RParenLoc,
                                   SourceRange AngleBrackets);
-  static CXXConstCastExpr *CreateEmpty(ASTContext &Context);
+  static CXXConstCastExpr *CreateEmpty(const ASTContext &Context);
 
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == CXXConstCastExprClass;
   }
 };
 
-/// UserDefinedLiteral - A call to a literal operator (C++11 [over.literal])
+/// \brief A call to a literal operator (C++11 [over.literal])
 /// written as a user-defined literal (C++11 [lit.ext]).
 ///
 /// Represents a user-defined literal, e.g. "foo"_bar or 1.23_xyz. While this
@@ -364,12 +367,12 @@ class UserDefinedLiteral : public CallExpr {
   SourceLocation UDSuffixLoc;
 
 public:
-  UserDefinedLiteral(ASTContext &C, Expr *Fn, ArrayRef<Expr*> Args,
+  UserDefinedLiteral(const ASTContext &C, Expr *Fn, ArrayRef<Expr*> Args,
                      QualType T, ExprValueKind VK, SourceLocation LitEndLoc,
                      SourceLocation SuffixLoc)
     : CallExpr(C, UserDefinedLiteralClass, Fn, 0, Args, T, VK, LitEndLoc),
       UDSuffixLoc(SuffixLoc) {}
-  explicit UserDefinedLiteral(ASTContext &C, EmptyShell Empty)
+  explicit UserDefinedLiteral(const ASTContext &C, EmptyShell Empty)
     : CallExpr(C, UserDefinedLiteralClass, Empty) {}
 
   /// The kind of literal operator which is invoked.
@@ -382,11 +385,11 @@ public:
     LOK_Character ///< operator "" X (CharT)
   };
 
-  /// getLiteralOperatorKind - Returns the kind of literal operator invocation
+  /// \brief Returns the kind of literal operator invocation
   /// which this expression represents.
   LiteralOperatorKind getLiteralOperatorKind() const;
 
-  /// getCookedLiteral - If this is not a raw user-defined literal, get the
+  /// \brief If this is not a raw user-defined literal, get the
   /// underlying cooked literal (representing the literal with the suffix
   /// removed).
   Expr *getCookedLiteral();
@@ -402,12 +405,13 @@ public:
   SourceLocation getLocEnd() const { return getRParenLoc(); }
 
 
-  /// getUDSuffixLoc - Returns the location of a ud-suffix in the expression.
+  /// \brief Returns the location of a ud-suffix in the expression.
+  ///
   /// For a string literal, there may be multiple identical suffixes. This
   /// returns the first.
   SourceLocation getUDSuffixLoc() const { return UDSuffixLoc; }
 
-  /// getUDSuffix - Returns the ud-suffix specified for this literal.
+  /// \brief Returns the ud-suffix specified for this literal.
   const IdentifierInfo *getUDSuffix() const;
 
   static bool classof(const Stmt *S) {
@@ -418,7 +422,7 @@ public:
   friend class ASTStmtWriter;
 };
 
-/// CXXBoolLiteralExpr - [C++ 2.13.5] C++ Boolean Literal.
+/// \brief A boolean literal, per ([C++ lex.bool] Boolean literals).
 ///
 class CXXBoolLiteralExpr : public Expr {
   bool Value;
@@ -449,7 +453,9 @@ public:
   child_range children() { return child_range(); }
 };
 
-/// CXXNullPtrLiteralExpr - [C++0x 2.14.7] C++ Pointer Literal
+/// \brief The null pointer literal (C++11 [lex.nullptr])
+///
+/// Introduced in C++11, the only literal of type \c nullptr_t is \c nullptr.
 class CXXNullPtrLiteralExpr : public Expr {
   SourceLocation Loc;
 public:
@@ -474,11 +480,50 @@ public:
   child_range children() { return child_range(); }
 };
 
-/// CXXTypeidExpr - A C++ @c typeid expression (C++ [expr.typeid]), which gets
-/// the type_info that corresponds to the supplied type, or the (possibly
+/// \brief Implicit construction of a std::initializer_list<T> object from an
+/// array temporary within list-initialization (C++11 [dcl.init.list]p5).
+class CXXStdInitializerListExpr : public Expr {
+  Stmt *SubExpr;
+
+  CXXStdInitializerListExpr(EmptyShell Empty)
+    : Expr(CXXStdInitializerListExprClass, Empty), SubExpr(0) {}
+
+public:
+  CXXStdInitializerListExpr(QualType Ty, Expr *SubExpr)
+    : Expr(CXXStdInitializerListExprClass, Ty, VK_RValue, OK_Ordinary,
+           Ty->isDependentType(), SubExpr->isValueDependent(),
+           SubExpr->isInstantiationDependent(),
+           SubExpr->containsUnexpandedParameterPack()),
+      SubExpr(SubExpr) {}
+
+  Expr *getSubExpr() { return static_cast<Expr*>(SubExpr); }
+  const Expr *getSubExpr() const { return static_cast<const Expr*>(SubExpr); }
+
+  SourceLocation getLocStart() const LLVM_READONLY {
+    return SubExpr->getLocStart();
+  }
+  SourceLocation getLocEnd() const LLVM_READONLY {
+    return SubExpr->getLocEnd();
+  }
+  SourceRange getSourceRange() const LLVM_READONLY {
+    return SubExpr->getSourceRange();
+  }
+
+  static bool classof(const Stmt *S) {
+    return S->getStmtClass() == CXXStdInitializerListExprClass;
+  }
+
+  child_range children() { return child_range(&SubExpr, &SubExpr + 1); }
+
+  friend class ASTReader;
+  friend class ASTStmtReader;
+};
+
+/// A C++ \c typeid expression (C++ [expr.typeid]), which gets
+/// the \c type_info that corresponds to the supplied type, or the (possibly
 /// dynamic) type of the supplied expression.
 ///
-/// This represents code like @c typeid(int) or @c typeid(*objPtr)
+/// This represents code like \c typeid(int) or \c typeid(*objPtr)
 class CXXTypeidExpr : public Expr {
 private:
   llvm::PointerUnion<Stmt *, TypeSourceInfo *> Operand;
@@ -521,7 +566,7 @@ public:
 
   /// \brief Retrieves the type operand of this typeid() expression after
   /// various required adjustments (removing reference types, cv-qualifiers).
-  QualType getTypeOperand() const;
+  QualType getTypeOperand(ASTContext &Context) const;
 
   /// \brief Retrieve source information for the type operand.
   TypeSourceInfo *getTypeOperandSourceInfo() const {
@@ -561,10 +606,11 @@ public:
   }
 };
 
-/// A member reference to an MSPropertyDecl.  This expression always
-/// has pseudo-object type, and therefore it is typically not
-/// encountered in a fully-typechecked expression except within the
-/// syntactic form of a PseudoObjectExpr.
+/// \brief A member reference to an MSPropertyDecl. 
+///
+/// This expression always has pseudo-object type, and therefore it is
+/// typically not encountered in a fully-typechecked expression except
+/// within the syntactic form of a PseudoObjectExpr.
 class MSPropertyRefExpr : public Expr {
   Expr *BaseExpr;
   MSPropertyDecl *TheDecl;
@@ -619,7 +665,7 @@ public:
   friend class ASTStmtReader;
 };
 
-/// CXXUuidofExpr - A microsoft C++ @c __uuidof expression, which gets
+/// A Microsoft C++ @c __uuidof expression, which gets
 /// the _GUID that corresponds to the supplied type or expression.
 ///
 /// This represents code like @c __uuidof(COMTYPE) or @c __uuidof(*comPtr)
@@ -655,7 +701,7 @@ public:
 
   /// \brief Retrieves the type operand of this __uuidof() expression after
   /// various required adjustments (removing reference types, cv-qualifiers).
-  QualType getTypeOperand() const;
+  QualType getTypeOperand(ASTContext &Context) const;
 
   /// \brief Retrieve source information for the type operand.
   TypeSourceInfo *getTypeOperandSourceInfo() const {
@@ -678,6 +724,8 @@ public:
     Operand = E;
   }
 
+  StringRef getUuidAsStringRef(ASTContext &Context) const;
+
   SourceLocation getLocStart() const LLVM_READONLY { return Range.getBegin(); }
   SourceLocation getLocEnd() const LLVM_READONLY { return Range.getEnd(); }
   SourceRange getSourceRange() const LLVM_READONLY { return Range; }
@@ -687,8 +735,10 @@ public:
     return T->getStmtClass() == CXXUuidofExprClass;
   }
 
-  /// Grabs __declspec(uuid()) off a type, or returns 0 if there is none.
-  static UuidAttr *GetUuidAttrOfType(QualType QT);
+  /// Grabs __declspec(uuid()) off a type, or returns 0 if we cannot resolve to
+  /// a single GUID.
+  static UuidAttr *GetUuidAttrOfType(QualType QT,
+                                     bool *HasMultipleGUIDsPtr = 0);
 
   // Iterators
   child_range children() {
@@ -698,17 +748,18 @@ public:
   }
 };
 
-/// CXXThisExpr - Represents the "this" expression in C++, which is a
-/// pointer to the object on which the current member function is
+/// \brief Represents the \c this expression in C++.
+///
+/// This is a pointer to the object on which the current member function is
 /// executing (C++ [expr.prim]p3). Example:
 ///
-/// @code
+/// \code
 /// class Foo {
 /// public:
 ///   void bar();
 ///   void test() { this->bar(); }
 /// };
-/// @endcode
+/// \endcode
 class CXXThisExpr : public Expr {
   SourceLocation Loc;
   bool Implicit : 1;
@@ -742,10 +793,11 @@ public:
   child_range children() { return child_range(); }
 };
 
-///  CXXThrowExpr - [C++ 15] C++ Throw Expression.  This handles
-///  'throw' and 'throw' assignment-expression.  When
-///  assignment-expression isn't present, Op will be null.
+/// \brief A C++ throw-expression (C++ [except.throw]).
 ///
+/// This handles 'throw' (for re-throwing the current exception) and
+/// 'throw' assignment-expression.  When assignment-expression isn't
+/// present, Op will be null.
 class CXXThrowExpr : public Expr {
   Stmt *Op;
   SourceLocation ThrowLoc;
@@ -755,8 +807,8 @@ class CXXThrowExpr : public Expr {
   friend class ASTStmtReader;
 
 public:
-  // Ty is the void type which is used as the result type of the
-  // exepression.  The l is the location of the throw keyword.  expr
+  // \p Ty is the void type which is used as the result type of the
+  // expression.  The \p l is the location of the throw keyword.  \p expr
   // can by null, if the optional expression to throw isn't present.
   CXXThrowExpr(Expr *expr, QualType Ty, SourceLocation l,
                bool IsThrownVariableInScope) :
@@ -795,10 +847,11 @@ public:
   }
 };
 
-/// CXXDefaultArgExpr - C++ [dcl.fct.default]. This wraps up a
-/// function call argument that was created from the corresponding
-/// parameter's default argument, when the call did not explicitly
-/// supply arguments for all of the parameters.
+/// \brief A default argument (C++ [dcl.fct.default]).
+///
+/// This wraps up a function call argument that was created from the
+/// corresponding parameter's default argument, when the call did not
+/// explicitly supply arguments for all of the parameters.
 class CXXDefaultArgExpr : public Expr {
   /// \brief The parameter whose default is being used.
   ///
@@ -831,20 +884,17 @@ class CXXDefaultArgExpr : public Expr {
 public:
   CXXDefaultArgExpr(EmptyShell Empty) : Expr(CXXDefaultArgExprClass, Empty) {}
 
-
-  // Param is the parameter whose default argument is used by this
+  // \p Param is the parameter whose default argument is used by this
   // expression.
-  static CXXDefaultArgExpr *Create(ASTContext &C, SourceLocation Loc,
+  static CXXDefaultArgExpr *Create(const ASTContext &C, SourceLocation Loc,
                                    ParmVarDecl *Param) {
     return new (C) CXXDefaultArgExpr(CXXDefaultArgExprClass, Loc, Param);
   }
 
-  // Param is the parameter whose default argument is used by this
-  // expression, and SubExpr is the expression that will actually be used.
-  static CXXDefaultArgExpr *Create(ASTContext &C,
-                                   SourceLocation Loc,
-                                   ParmVarDecl *Param,
-                                   Expr *SubExpr);
+  // \p Param is the parameter whose default argument is used by this
+  // expression, and \p SubExpr is the expression that will actually be used.
+  static CXXDefaultArgExpr *Create(const ASTContext &C, SourceLocation Loc,
+                                   ParmVarDecl *Param, Expr *SubExpr);
 
   // Retrieve the parameter that the argument was created from.
   const ParmVarDecl *getParam() const { return Param.getPointer(); }
@@ -866,8 +916,8 @@ public:
   /// used.
   SourceLocation getUsedLocation() const { return Loc; }
 
-  // Default argument expressions have no representation in the
-  // source, so they have an empty source range.
+  /// Default argument expressions have no representation in the
+  /// source, so they have an empty source range.
   SourceLocation getLocStart() const LLVM_READONLY { return SourceLocation(); }
   SourceLocation getLocEnd() const LLVM_READONLY { return SourceLocation(); }
 
@@ -884,7 +934,10 @@ public:
   friend class ASTStmtWriter;
 };
 
-/// \brief This wraps a use of a C++ default initializer (technically,
+/// \brief A use of a default initializer in a constructor or in aggregate
+/// initialization.
+///
+/// This wraps a use of a C++ default initializer (technically,
 /// a brace-or-equal-initializer for a non-static data member) when it
 /// is implicitly used in a mem-initializer-list in a constructor
 /// (C++11 [class.base.init]p8) or in aggregate initialization
@@ -896,24 +949,24 @@ class CXXDefaultInitExpr : public Expr {
   /// \brief The location where the default initializer expression was used.
   SourceLocation Loc;
 
-  CXXDefaultInitExpr(ASTContext &C, SourceLocation Loc, FieldDecl *Field,
+  CXXDefaultInitExpr(const ASTContext &C, SourceLocation Loc, FieldDecl *Field,
                      QualType T);
 
   CXXDefaultInitExpr(EmptyShell Empty) : Expr(CXXDefaultInitExprClass, Empty) {}
 
 public:
-  // Field is the non-static data member whose default initializer is used
-  // by this expression.
-  static CXXDefaultInitExpr *Create(ASTContext &C, SourceLocation Loc,
+  /// \p Field is the non-static data member whose default initializer is used
+  /// by this expression.
+  static CXXDefaultInitExpr *Create(const ASTContext &C, SourceLocation Loc,
                                     FieldDecl *Field) {
     return new (C) CXXDefaultInitExpr(C, Loc, Field, Field->getType());
   }
 
-  // Get the field whose initializer will be used.
+  /// \brief Get the field whose initializer will be used.
   FieldDecl *getField() { return Field; }
   const FieldDecl *getField() const { return Field; }
 
-  // Get the initialization expression that will be used.
+  /// \brief Get the initialization expression that will be used.
   const Expr *getExpr() const { return Field->getInClassInitializer(); }
   Expr *getExpr() { return Field->getInClassInitializer(); }
 
@@ -931,16 +984,16 @@ public:
   friend class ASTStmtReader;
 };
 
-/// CXXTemporary - Represents a C++ temporary.
+/// \brief Represents a C++ temporary.
 class CXXTemporary {
-  /// Destructor - The destructor that needs to be called.
+  /// \brief The destructor that needs to be called.
   const CXXDestructorDecl *Destructor;
 
-  CXXTemporary(const CXXDestructorDecl *destructor)
+  explicit CXXTemporary(const CXXDestructorDecl *destructor)
     : Destructor(destructor) { }
 
 public:
-  static CXXTemporary *Create(ASTContext &C,
+  static CXXTemporary *Create(const ASTContext &C,
                               const CXXDestructorDecl *Destructor);
 
   const CXXDestructorDecl *getDestructor() const { return Destructor; }
@@ -980,7 +1033,7 @@ public:
   CXXBindTemporaryExpr(EmptyShell Empty)
     : Expr(CXXBindTemporaryExprClass, Empty), Temp(0), SubExpr(0) {}
 
-  static CXXBindTemporaryExpr *Create(ASTContext &C, CXXTemporary *Temp,
+  static CXXBindTemporaryExpr *Create(const ASTContext &C, CXXTemporary *Temp,
                                       Expr* SubExpr);
 
   CXXTemporary *getTemporary() { return Temp; }
@@ -1019,7 +1072,7 @@ private:
   CXXConstructorDecl *Constructor;
 
   SourceLocation Loc;
-  SourceRange ParenRange;
+  SourceRange ParenOrBraceRange;
   unsigned NumArgs : 16;
   bool Elidable : 1;
   bool HadMultipleCandidates : 1;
@@ -1029,7 +1082,7 @@ private:
   Stmt **Args;
 
 protected:
-  CXXConstructExpr(ASTContext &C, StmtClass SC, QualType T,
+  CXXConstructExpr(const ASTContext &C, StmtClass SC, QualType T,
                    SourceLocation Loc,
                    CXXConstructorDecl *d, bool elidable,
                    ArrayRef<Expr *> Args,
@@ -1037,7 +1090,7 @@ protected:
                    bool ListInitialization,
                    bool ZeroInitialization,
                    ConstructionKind ConstructKind,
-                   SourceRange ParenRange);
+                   SourceRange ParenOrBraceRange);
 
   /// \brief Construct an empty C++ construction expression.
   CXXConstructExpr(StmtClass SC, EmptyShell Empty)
@@ -1055,7 +1108,7 @@ public:
       ConstructKind(0), Args(0)
   { }
 
-  static CXXConstructExpr *Create(ASTContext &C, QualType T,
+  static CXXConstructExpr *Create(const ASTContext &C, QualType T,
                                   SourceLocation Loc,
                                   CXXConstructorDecl *D, bool Elidable,
                                   ArrayRef<Expr *> Args,
@@ -1063,7 +1116,7 @@ public:
                                   bool ListInitialization,
                                   bool ZeroInitialization,
                                   ConstructionKind ConstructKind,
-                                  SourceRange ParenRange);
+                                  SourceRange ParenOrBraceRange);
 
   CXXConstructorDecl* getConstructor() const { return Constructor; }
   void setConstructor(CXXConstructorDecl *C) { Constructor = C; }
@@ -1091,7 +1144,7 @@ public:
     ZeroInitialization = ZeroInit;
   }
 
-  /// \brief Determines whether this constructor is actually constructing
+  /// \brief Determine whether this constructor is actually constructing
   /// a base class (rather than a complete object).
   ConstructionKind getConstructionKind() const {
     return (ConstructionKind)ConstructKind;
@@ -1111,7 +1164,7 @@ public:
   Expr **getArgs() const { return reinterpret_cast<Expr **>(Args); }
   unsigned getNumArgs() const { return NumArgs; }
 
-  /// getArg - Return the specified argument.
+  /// \brief Return the specified argument.
   Expr *getArg(unsigned Arg) {
     assert(Arg < NumArgs && "Arg access out of range!");
     return cast<Expr>(Args[Arg]);
@@ -1121,7 +1174,7 @@ public:
     return cast<Expr>(Args[Arg]);
   }
 
-  /// setArg - Set the specified argument.
+  /// \brief Set the specified argument.
   void setArg(unsigned Arg, Expr *ArgExpr) {
     assert(Arg < NumArgs && "Arg access out of range!");
     Args[Arg] = ArgExpr;
@@ -1129,8 +1182,8 @@ public:
 
   SourceLocation getLocStart() const LLVM_READONLY;
   SourceLocation getLocEnd() const LLVM_READONLY;
-  SourceRange getParenRange() const { return ParenRange; }
-  void setParenRange(SourceRange Range) { ParenRange = Range; }
+  SourceRange getParenOrBraceRange() const { return ParenOrBraceRange; }
+  void setParenOrBraceRange(SourceRange Range) { ParenOrBraceRange = Range; }
 
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == CXXConstructExprClass ||
@@ -1149,43 +1202,42 @@ public:
 /// notation (C++ [expr.type.conv]).
 ///
 /// Example:
-/// @code
+/// \code
 ///   x = int(0.5);
-/// @endcode
+/// \endcode
 class CXXFunctionalCastExpr : public ExplicitCastExpr {
-  SourceLocation TyBeginLoc;
+  SourceLocation LParenLoc;
   SourceLocation RParenLoc;
 
   CXXFunctionalCastExpr(QualType ty, ExprValueKind VK,
                         TypeSourceInfo *writtenTy,
-                        SourceLocation tyBeginLoc, CastKind kind,
-                        Expr *castExpr, unsigned pathSize,
-                        SourceLocation rParenLoc)
+                        CastKind kind, Expr *castExpr, unsigned pathSize,
+                        SourceLocation lParenLoc, SourceLocation rParenLoc)
     : ExplicitCastExpr(CXXFunctionalCastExprClass, ty, VK, kind,
                        castExpr, pathSize, writtenTy),
-      TyBeginLoc(tyBeginLoc), RParenLoc(rParenLoc) {}
+      LParenLoc(lParenLoc), RParenLoc(rParenLoc) {}
 
   explicit CXXFunctionalCastExpr(EmptyShell Shell, unsigned PathSize)
     : ExplicitCastExpr(CXXFunctionalCastExprClass, Shell, PathSize) { }
 
 public:
-  static CXXFunctionalCastExpr *Create(ASTContext &Context, QualType T,
+  static CXXFunctionalCastExpr *Create(const ASTContext &Context, QualType T,
                                        ExprValueKind VK,
                                        TypeSourceInfo *Written,
-                                       SourceLocation TyBeginLoc,
                                        CastKind Kind, Expr *Op,
                                        const CXXCastPath *Path,
+                                       SourceLocation LPLoc,
                                        SourceLocation RPLoc);
-  static CXXFunctionalCastExpr *CreateEmpty(ASTContext &Context,
+  static CXXFunctionalCastExpr *CreateEmpty(const ASTContext &Context,
                                             unsigned PathSize);
 
-  SourceLocation getTypeBeginLoc() const { return TyBeginLoc; }
-  void setTypeBeginLoc(SourceLocation L) { TyBeginLoc = L; }
+  SourceLocation getLParenLoc() const { return LParenLoc; }
+  void setLParenLoc(SourceLocation L) { LParenLoc = L; }
   SourceLocation getRParenLoc() const { return RParenLoc; }
   void setRParenLoc(SourceLocation L) { RParenLoc = L; }
 
-  SourceLocation getLocStart() const LLVM_READONLY { return TyBeginLoc; }
-  SourceLocation getLocEnd() const LLVM_READONLY { return RParenLoc; }
+  SourceLocation getLocStart() const LLVM_READONLY;
+  SourceLocation getLocEnd() const LLVM_READONLY;
 
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == CXXFunctionalCastExprClass;
@@ -1200,21 +1252,21 @@ public:
 /// constructor to build a temporary object. With N == 1 arguments the
 /// functional cast expression will be represented by CXXFunctionalCastExpr.
 /// Example:
-/// @code
+/// \code
 /// struct X { X(int, float); }
 ///
 /// X create_X() {
 ///   return X(1, 3.14f); // creates a CXXTemporaryObjectExpr
 /// };
-/// @endcode
+/// \endcode
 class CXXTemporaryObjectExpr : public CXXConstructExpr {
   TypeSourceInfo *Type;
 
 public:
-  CXXTemporaryObjectExpr(ASTContext &C, CXXConstructorDecl *Cons,
+  CXXTemporaryObjectExpr(const ASTContext &C, CXXConstructorDecl *Cons,
                          TypeSourceInfo *Type,
                          ArrayRef<Expr *> Args,
-                         SourceRange parenRange,
+                         SourceRange ParenOrBraceRange,
                          bool HadMultipleCandidates,
                          bool ListInitialization,
                          bool ZeroInitialization);
@@ -1244,26 +1296,35 @@ public:
 /// }
 /// \endcode
 ///
-/// Lambda expressions can capture local variables, either by copying
+/// C++11 lambda expressions can capture local variables, either by copying
 /// the values of those local variables at the time the function
 /// object is constructed (not when it is called!) or by holding a
 /// reference to the local variable. These captures can occur either
 /// implicitly or can be written explicitly between the square
 /// brackets ([...]) that start the lambda expression.
+///
+/// C++1y introduces a new form of "capture" called an init-capture that
+/// includes an initializing expression (rather than capturing a variable),
+/// and which can never occur implicitly.
 class LambdaExpr : public Expr {
   enum {
     /// \brief Flag used by the Capture class to indicate that the given
     /// capture was implicit.
     Capture_Implicit = 0x01,
 
-    /// \brief Flag used by the Capture class to indciate that the
+    /// \brief Flag used by the Capture class to indicate that the
     /// given capture was by-copy.
+    ///
+    /// This includes the case of a non-reference init-capture.
     Capture_ByCopy = 0x02
   };
 
   /// \brief The source range that covers the lambda introducer ([...]).
   SourceRange IntroducerRange;
 
+  /// \brief The source location of this lambda's capture-default ('=' or '&').
+  SourceLocation CaptureDefaultLoc;
+
   /// \brief The number of captures.
   unsigned NumCaptures : 16;
   
@@ -1297,9 +1358,10 @@ class LambdaExpr : public Expr {
   // array captures.
 
 public:
-  /// \brief Describes the capture of either a variable or 'this'.
+  /// \brief Describes the capture of a variable or of \c this, or of a
+  /// C++1y init-capture.
   class Capture {
-    llvm::PointerIntPair<VarDecl *, 2> VarAndBits;
+    llvm::PointerIntPair<Decl *, 2> DeclAndBits;
     SourceLocation Loc;
     SourceLocation EllipsisLoc;
     
@@ -1307,15 +1369,17 @@ public:
     friend class ASTStmtWriter;
     
   public:
-    /// \brief Create a new capture.
+    /// \brief Create a new capture of a variable or of \c this.
     ///
     /// \param Loc The source location associated with this capture.
     ///
-    /// \param Kind The kind of capture (this, byref, bycopy).
+    /// \param Kind The kind of capture (this, byref, bycopy), which must
+    /// not be init-capture.
     ///
     /// \param Implicit Whether the capture was implicit or explicit.
     ///
-    /// \param Var The local variable being captured, or null if capturing this.
+    /// \param Var The local variable being captured, or null if capturing
+    /// \c this.
     ///
     /// \param EllipsisLoc The location of the ellipsis (...) for a
     /// capture that is a pack expansion, or an invalid source
@@ -1327,36 +1391,43 @@ public:
     /// \brief Determine the kind of capture.
     LambdaCaptureKind getCaptureKind() const;
 
-    /// \brief Determine whether this capture handles the C++ 'this'
+    /// \brief Determine whether this capture handles the C++ \c this
     /// pointer.
-    bool capturesThis() const { return VarAndBits.getPointer() == 0; }
+    bool capturesThis() const { return DeclAndBits.getPointer() == 0; }
 
     /// \brief Determine whether this capture handles a variable.
-    bool capturesVariable() const { return VarAndBits.getPointer() != 0; }
+    bool capturesVariable() const {
+      return dyn_cast_or_null<VarDecl>(DeclAndBits.getPointer());
+    }
+
+    /// \brief Determine whether this is an init-capture.
+    bool isInitCapture() const {
+      return capturesVariable() && getCapturedVar()->isInitCapture();
+    }
 
     /// \brief Retrieve the declaration of the local variable being
     /// captured.
     ///
-    /// This operation is only valid if this capture does not capture
-    /// 'this'.
-    VarDecl *getCapturedVar() const { 
-      assert(!capturesThis() && "No variable available for 'this' capture");
-      return VarAndBits.getPointer();
+    /// This operation is only valid if this capture is a variable capture
+    /// (other than a capture of \c this).
+    VarDecl *getCapturedVar() const {
+      assert(capturesVariable() && "No variable available for 'this' capture");
+      return cast<VarDecl>(DeclAndBits.getPointer());
     }
 
     /// \brief Determine whether this was an implicit capture (not
     /// written between the square brackets introducing the lambda).
-    bool isImplicit() const { return VarAndBits.getInt() & Capture_Implicit; }
+    bool isImplicit() const { return DeclAndBits.getInt() & Capture_Implicit; }
 
-    /// \brief Determine whether this was an explicit capture, written
-    /// between the square brackets introducing the lambda.
+    /// \brief Determine whether this was an explicit capture (written
+    /// between the square brackets introducing the lambda).
     bool isExplicit() const { return !isImplicit(); }
 
     /// \brief Retrieve the source location of the capture.
     ///
     /// For an explicit capture, this returns the location of the
     /// explicit capture in the source. For an implicit capture, this
-    /// returns the location at which the variable or 'this' was first
+    /// returns the location at which the variable or \c this was first
     /// used.
     SourceLocation getLocation() const { return Loc; }
 
@@ -1376,6 +1447,7 @@ private:
   /// \brief Construct a lambda expression.
   LambdaExpr(QualType T, SourceRange IntroducerRange,
              LambdaCaptureDefault CaptureDefault,
+             SourceLocation CaptureDefaultLoc,
              ArrayRef<Capture> Captures,
              bool ExplicitParams,
              bool ExplicitResultType,
@@ -1414,10 +1486,11 @@ private:
 
 public:
   /// \brief Construct a new lambda expression.
-  static LambdaExpr *Create(ASTContext &C, 
+  static LambdaExpr *Create(const ASTContext &C,
                             CXXRecordDecl *Class,
                             SourceRange IntroducerRange,
                             LambdaCaptureDefault CaptureDefault,
+                            SourceLocation CaptureDefaultLoc,
                             ArrayRef<Capture> Captures,
                             bool ExplicitParams,
                             bool ExplicitResultType,
@@ -1429,14 +1502,20 @@ public:
 
   /// \brief Construct a new lambda expression that will be deserialized from
   /// an external source.
-  static LambdaExpr *CreateDeserialized(ASTContext &C, unsigned NumCaptures,
+  static LambdaExpr *CreateDeserialized(const ASTContext &C,
+                                        unsigned NumCaptures,
                                         unsigned NumArrayIndexVars);
-  
+
   /// \brief Determine the default capture kind for this lambda.
   LambdaCaptureDefault getCaptureDefault() const {
     return static_cast<LambdaCaptureDefault>(CaptureDefault);
   }
 
+  /// \brief Retrieve the location of this lambda's capture-default, if any.
+  SourceLocation getCaptureDefaultLoc() const {
+    return CaptureDefaultLoc;
+  }
+
   /// \brief An iterator that walks over the captures of the lambda,
   /// both implicit and explicit.
   typedef const Capture *capture_iterator;
@@ -1495,15 +1574,24 @@ public:
   /// brackets ([...]).
   SourceRange getIntroducerRange() const { return IntroducerRange; }
 
-  /// \brief Retrieve the class that corresponds to the lambda, which
-  /// stores the captures in its fields and provides the various
-  /// operations permitted on a lambda (copying, calling).
+  /// \brief Retrieve the class that corresponds to the lambda.
+  /// 
+  /// This is the "closure type" (C++1y [expr.prim.lambda]), and stores the
+  /// captures in its fields and provides the various operations permitted
+  /// on a lambda (copying, calling).
   CXXRecordDecl *getLambdaClass() const;
 
   /// \brief Retrieve the function call operator associated with this
   /// lambda expression. 
   CXXMethodDecl *getCallOperator() const;
 
+  /// \brief If this is a generic lambda expression, retrieve the template 
+  /// parameter list associated with it, or else return null. 
+  TemplateParameterList *getTemplateParameterList() const;
+
+  /// \brief Whether this is a generic lambda.
+  bool isGenericLambda() const { return getTemplateParameterList(); }
+
   /// \brief Retrieve the body of the lambda.
   CompoundStmt *getBody() const;
 
@@ -1535,10 +1623,8 @@ public:
   friend class ASTStmtWriter;
 };
 
-/// CXXScalarValueInitExpr - [C++ 5.2.3p2]
-/// Expression "T()" which creates a value-initialized rvalue of type
-/// T, which is a non-class type.
-///
+/// An expression "T()" which creates a value-initialized rvalue of type
+/// T, which is a non-class type.  See (C++98 [5.2.3p2]).
 class CXXScalarValueInitExpr : public Expr {
   SourceLocation RParenLoc;
   TypeSourceInfo *TypeInfo;
@@ -1575,11 +1661,11 @@ public:
   child_range children() { return child_range(); }
 };
 
-/// @brief Represents a new-expression for memory allocation and constructor
-// calls, e.g: "new CXXNewExpr(foo)".
+/// \brief Represents a new-expression for memory allocation and constructor
+/// calls, e.g: "new CXXNewExpr(foo)".
 class CXXNewExpr : public Expr {
-  // Contains an optional array size expression, an optional initialization
-  // expression, and any number of optional placement arguments, in that order.
+  /// Contains an optional array size expression, an optional initialization
+  /// expression, and any number of optional placement arguments, in that order.
   Stmt **SubExprs;
   /// \brief Points to the allocation function used.
   FunctionDecl *OperatorNew;
@@ -1600,18 +1686,18 @@ class CXXNewExpr : public Expr {
   /// \brief Source-range of a paren-delimited initializer.
   SourceRange DirectInitRange;
 
-  // Was the usage ::new, i.e. is the global new to be used?
+  /// Was the usage ::new, i.e. is the global new to be used?
   bool GlobalNew : 1;
-  // Do we allocate an array? If so, the first SubExpr is the size expression.
+  /// Do we allocate an array? If so, the first SubExpr is the size expression.
   bool Array : 1;
-  // If this is an array allocation, does the usual deallocation
-  // function for the allocated type want to know the allocated size?
+  /// If this is an array allocation, does the usual deallocation
+  /// function for the allocated type want to know the allocated size?
   bool UsualArrayDeleteWantsSize : 1;
-  // The number of placement new arguments.
+  /// The number of placement new arguments.
   unsigned NumPlacementArgs : 13;
-  // What kind of initializer do we have? Could be none, parens, or braces.
-  // In storage, we distinguish between "none, and no initializer expr", and
-  // "none, but an implicit initializer expr".
+  /// What kind of initializer do we have? Could be none, parens, or braces.
+  /// In storage, we distinguish between "none, and no initializer expr", and
+  /// "none, but an implicit initializer expr".
   unsigned StoredInitializationStyle : 2;
 
   friend class ASTStmtReader;
@@ -1623,7 +1709,7 @@ public:
     ListInit  ///< New-expression has a C++11 list-initializer.
   };
 
-  CXXNewExpr(ASTContext &C, bool globalNew, FunctionDecl *operatorNew,
+  CXXNewExpr(const ASTContext &C, bool globalNew, FunctionDecl *operatorNew,
              FunctionDecl *operatorDelete, bool usualArrayDeleteWantsSize,
              ArrayRef<Expr*> placementArgs,
              SourceRange typeIdParens, Expr *arraySize,
@@ -1633,8 +1719,8 @@ public:
   explicit CXXNewExpr(EmptyShell Shell)
     : Expr(CXXNewExprClass, Shell), SubExprs(0) { }
 
-  void AllocateArgsArray(ASTContext &C, bool isArray, unsigned numPlaceArgs,
-                         bool hasInitializer);
+  void AllocateArgsArray(const ASTContext &C, bool isArray,
+                         unsigned numPlaceArgs, bool hasInitializer);
 
   QualType getAllocatedType() const {
     assert(getType()->isPointerType());
@@ -1646,15 +1732,17 @@ public:
   }
 
   /// \brief True if the allocation result needs to be null-checked.
-  /// C++0x [expr.new]p13:
+  ///
+  /// C++11 [expr.new]p13:
   ///   If the allocation function returns null, initialization shall
   ///   not be done, the deallocation function shall not be called,
   ///   and the value of the new-expression shall be null.
+  ///
   /// An allocation function is not allowed to return null unless it
   /// has a non-throwing exception-specification.  The '03 rule is
   /// identical except that the definition of a non-throwing
   /// exception specification is just "is it throw()?".
-  bool shouldNullCheckAllocation(ASTContext &Ctx) const;
+  bool shouldNullCheckAllocation(const ASTContext &Ctx) const;
 
   FunctionDecl *getOperatorNew() const { return OperatorNew; }
   void setOperatorNew(FunctionDecl *D) { OperatorNew = D; }
@@ -1706,7 +1794,7 @@ public:
     return hasInitializer() ? cast<Expr>(SubExprs[Array]) : 0;
   }
 
-  /// \brief Returns the CXXConstructExpr from this new-expression, or NULL.
+  /// \brief Returns the CXXConstructExpr from this new-expression, or null.
   const CXXConstructExpr* getConstructExpr() const {
     return dyn_cast_or_null<CXXConstructExpr>(getInitializer());
   }
@@ -1768,22 +1856,22 @@ public:
 /// \brief Represents a \c delete expression for memory deallocation and
 /// destructor calls, e.g. "delete[] pArray".
 class CXXDeleteExpr : public Expr {
-  // Points to the operator delete overload that is used. Could be a member.
+  /// Points to the operator delete overload that is used. Could be a member.
   FunctionDecl *OperatorDelete;
-  // The pointer expression to be deleted.
+  /// The pointer expression to be deleted.
   Stmt *Argument;
-  // Location of the expression.
+  /// Location of the expression.
   SourceLocation Loc;
-  // Is this a forced global delete, i.e. "::delete"?
+  /// Is this a forced global delete, i.e. "::delete"?
   bool GlobalDelete : 1;
-  // Is this the array form of delete, i.e. "delete[]"?
+  /// Is this the array form of delete, i.e. "delete[]"?
   bool ArrayForm : 1;
-  // ArrayFormAsWritten can be different from ArrayForm if 'delete' is applied
-  // to pointer-to-array type (ArrayFormAsWritten will be false while ArrayForm
-  // will be true).
+  /// ArrayFormAsWritten can be different from ArrayForm if 'delete' is applied
+  /// to pointer-to-array type (ArrayFormAsWritten will be false while ArrayForm
+  /// will be true).
   bool ArrayFormAsWritten : 1;
-  // Does the usual deallocation function for the element type require
-  // a size_t argument?
+  /// Does the usual deallocation function for the element type require
+  /// a size_t argument?
   bool UsualArrayDeleteWantsSize : 1;
 public:
   CXXDeleteExpr(QualType ty, bool globalDelete, bool arrayForm,
@@ -1816,9 +1904,10 @@ public:
   Expr *getArgument() { return cast<Expr>(Argument); }
   const Expr *getArgument() const { return cast<Expr>(Argument); }
 
-  /// \brief Retrieve the type being destroyed.  If the type being
-  /// destroyed is a dependent type which may or may not be a pointer,
-  /// return an invalid type.
+  /// \brief Retrieve the type being destroyed. 
+  ///
+  /// If the type being destroyed is a dependent type which may or may not
+  /// be a pointer, return an invalid type.
   QualType getDestroyedType() const;
 
   SourceLocation getLocStart() const LLVM_READONLY { return Loc; }
@@ -1918,7 +2007,7 @@ class CXXPseudoDestructorExpr : public Expr {
   friend class ASTStmtReader;
 
 public:
-  CXXPseudoDestructorExpr(ASTContext &Context,
+  CXXPseudoDestructorExpr(const ASTContext &Context,
                           Expr *Base, bool isArrow, SourceLocation OperatorLoc,
                           NestedNameSpecifierLoc QualifierLoc,
                           TypeSourceInfo *ScopeType,
@@ -1935,7 +2024,7 @@ public:
   /// \brief Determines whether this member expression actually had
   /// a C++ nested-name-specifier prior to the name of the member, e.g.,
   /// x->Base::foo.
-  bool hasQualifier() const { return QualifierLoc; }
+  bool hasQualifier() const { return QualifierLoc.hasQualifier(); }
 
   /// \brief Retrieves the nested-name-specifier that qualifies the type name,
   /// with source-location information.
@@ -1943,7 +2032,7 @@ public:
 
   /// \brief If the member name was qualified, retrieves the
   /// nested-name-specifier that precedes the member name. Otherwise, returns
-  /// NULL.
+  /// null.
   NestedNameSpecifier *getQualifier() const {
     return QualifierLoc.getNestedNameSpecifier();
   }
@@ -1978,7 +2067,7 @@ public:
   ///
   /// This type-source information is available for non-dependent
   /// pseudo-destructor expressions and some dependent pseudo-destructor
-  /// expressions. Returns NULL if we only have the identifier for a
+  /// expressions. Returns null if we only have the identifier for a
   /// dependent pseudo-destructor expression.
   TypeSourceInfo *getDestroyedTypeInfo() const {
     return DestroyedType.getTypeSourceInfo();
@@ -2025,23 +2114,23 @@ public:
 /// implementation of TR1/C++11 type trait templates.
 ///
 /// Example:
-/// @code
+/// \code
 ///   __is_pod(int) == true
 ///   __is_enum(std::string) == false
-/// @endcode
+/// \endcode
 class UnaryTypeTraitExpr : public Expr {
-  /// UTT - The trait. A UnaryTypeTrait enum in MSVC compat unsigned.
+  /// \brief The trait. A UnaryTypeTrait enum in MSVC compatible unsigned.
   unsigned UTT : 31;
   /// The value of the type trait. Unspecified if dependent.
   bool Value : 1;
 
-  /// Loc - The location of the type trait keyword.
+  /// \brief The location of the type trait keyword.
   SourceLocation Loc;
 
-  /// RParen - The location of the closing paren.
+  /// \brief The location of the closing paren.
   SourceLocation RParen;
 
-  /// The type being queried.
+  /// \brief The type being queried.
   TypeSourceInfo *QueriedType;
 
 public:
@@ -2083,26 +2172,26 @@ public:
 /// implementation of TR1/C++11 type trait templates.
 ///
 /// Example:
-/// @code
+/// \code
 ///   __is_base_of(Base, Derived) == true
-/// @endcode
+/// \endcode
 class BinaryTypeTraitExpr : public Expr {
-  /// BTT - The trait. A BinaryTypeTrait enum in MSVC compat unsigned.
+  /// \brief The trait. A BinaryTypeTrait enum in MSVC compatible unsigned.
   unsigned BTT : 8;
 
   /// The value of the type trait. Unspecified if dependent.
   bool Value : 1;
 
-  /// Loc - The location of the type trait keyword.
+  /// \brief The location of the type trait keyword.
   SourceLocation Loc;
 
-  /// RParen - The location of the closing paren.
+  /// \brief The location of the closing paren.
   SourceLocation RParen;
 
-  /// The lhs type being queried.
+  /// \brief The lhs type being queried.
   TypeSourceInfo *LhsType;
 
-  /// The rhs type being queried.
+  /// \brief The rhs type being queried.
   TypeSourceInfo *RhsType;
 
 public:
@@ -2184,13 +2273,14 @@ class TypeTraitExpr : public Expr {
   
 public:
   /// \brief Create a new type trait expression.
-  static TypeTraitExpr *Create(ASTContext &C, QualType T, SourceLocation Loc, 
-                               TypeTrait Kind,
+  static TypeTraitExpr *Create(const ASTContext &C, QualType T,
+                               SourceLocation Loc, TypeTrait Kind,
                                ArrayRef<TypeSourceInfo *> Args,
                                SourceLocation RParenLoc,
                                bool Value);
 
-  static TypeTraitExpr *CreateDeserialized(ASTContext &C, unsigned NumArgs);
+  static TypeTraitExpr *CreateDeserialized(const ASTContext &C,
+                                           unsigned NumArgs);
   
   /// \brief Determine which type trait this expression uses.
   TypeTrait getTrait() const {
@@ -2249,10 +2339,10 @@ public:
 /// __array_rank and __array_extent.
 ///
 /// Example:
-/// @code
+/// \code
 ///   __array_rank(int[10][20]) == 2
 ///   __array_extent(int, 1)    == 20
-/// @endcode
+/// \endcode
 class ArrayTypeTraitExpr : public Expr {
   virtual void anchor();
 
@@ -2319,12 +2409,12 @@ public:
 /// \brief An expression trait intrinsic.
 ///
 /// Example:
-/// @code
+/// \code
 ///   __is_lvalue_expr(std::cout) == true
 ///   __is_lvalue_expr(1) == false
-/// @endcode
+/// \endcode
 class ExpressionTraitExpr : public Expr {
-  /// \brief The trait. A ExpressionTrait enum in MSVC compat unsigned.
+  /// \brief The trait. A ExpressionTrait enum in MSVC compatible unsigned.
   unsigned ET : 31;
   /// \brief The value of the type trait. Unspecified if dependent.
   bool Value : 1;
@@ -2403,7 +2493,7 @@ protected:
     return const_cast<OverloadExpr*>(this)->getTemplateKWAndArgsInfo();
   }
 
-  OverloadExpr(StmtClass K, ASTContext &C,
+  OverloadExpr(StmtClass K, const ASTContext &C,
                NestedNameSpecifierLoc QualifierLoc,
                SourceLocation TemplateKWLoc,
                const DeclarationNameInfo &NameInfo,
@@ -2417,7 +2507,7 @@ protected:
     : Expr(K, Empty), QualifierLoc(), Results(0), NumResults(0),
       HasTemplateKWAndArgsInfo(false) { }
 
-  void initializeResults(ASTContext &C,
+  void initializeResults(const ASTContext &C,
                          UnresolvedSetIterator Begin,
                          UnresolvedSetIterator End);
 
@@ -2428,7 +2518,7 @@ public:
     bool HasFormOfMemberPointer;
   };
 
-  /// Finds the overloaded expression in the given expression of
+  /// \brief Finds the overloaded expression in the given expression \p E of
   /// OverloadTy.
   ///
   /// \return the expression (which must be there) and true if it has
@@ -2561,10 +2651,11 @@ public:
 /// parsing but could not resolve to a specific declaration.
 ///
 /// This arises in several ways:
-///   * we might be waiting for argument-dependent lookup
-///   * the name might resolve to an overloaded function
+///   * we might be waiting for argument-dependent lookup;
+///   * the name might resolve to an overloaded function;
 /// and eventually:
-///   * the lookup might have included a function template
+///   * the lookup might have included a function template.
+///
 /// These never include UnresolvedUsingValueDecls, which are always class
 /// members and therefore appear only in UnresolvedMemberLookupExprs.
 class UnresolvedLookupExpr : public OverloadExpr {
@@ -2584,7 +2675,7 @@ class UnresolvedLookupExpr : public OverloadExpr {
   /// against the qualified-lookup bits.
   CXXRecordDecl *NamingClass;
 
-  UnresolvedLookupExpr(ASTContext &C,
+  UnresolvedLookupExpr(const ASTContext &C,
                        CXXRecordDecl *NamingClass,
                        NestedNameSpecifierLoc QualifierLoc,
                        SourceLocation TemplateKWLoc,
@@ -2606,7 +2697,7 @@ class UnresolvedLookupExpr : public OverloadExpr {
   friend class ASTStmtReader;
 
 public:
-  static UnresolvedLookupExpr *Create(ASTContext &C,
+  static UnresolvedLookupExpr *Create(const ASTContext &C,
                                       CXXRecordDecl *NamingClass,
                                       NestedNameSpecifierLoc QualifierLoc,
                                       const DeclarationNameInfo &NameInfo,
@@ -2618,7 +2709,7 @@ public:
                                        ADL, Overloaded, 0, Begin, End);
   }
 
-  static UnresolvedLookupExpr *Create(ASTContext &C,
+  static UnresolvedLookupExpr *Create(const ASTContext &C,
                                       CXXRecordDecl *NamingClass,
                                       NestedNameSpecifierLoc QualifierLoc,
                                       SourceLocation TemplateKWLoc,
@@ -2628,7 +2719,7 @@ public:
                                       UnresolvedSetIterator Begin,
                                       UnresolvedSetIterator End);
 
-  static UnresolvedLookupExpr *CreateEmpty(ASTContext &C,
+  static UnresolvedLookupExpr *CreateEmpty(const ASTContext &C,
                                            bool HasTemplateKWAndArgsInfo,
                                            unsigned NumTemplateArgs);
 
@@ -2671,7 +2762,7 @@ public:
 /// DependentScopeDeclRefExpr node is used only within C++ templates when
 /// the qualification (e.g., X<T>::) refers to a dependent type. In
 /// this case, X<T>::value cannot resolve to a declaration because the
-/// declaration will differ from on instantiation of X<T> to the
+/// declaration will differ from one instantiation of X<T> to the
 /// next. Therefore, DependentScopeDeclRefExpr keeps track of the
 /// qualifier (X<T>::) and the name of the entity being referenced
 /// ("value"). Such expressions will instantiate to a DeclRefExpr once the
@@ -2681,7 +2772,7 @@ class DependentScopeDeclRefExpr : public Expr {
   /// declaration name.
   NestedNameSpecifierLoc QualifierLoc;
 
-  /// The name of the entity we will be referencing.
+  /// \brief The name of the entity we will be referencing.
   DeclarationNameInfo NameInfo;
 
   /// \brief Whether the name includes info for explicit template
@@ -2706,13 +2797,13 @@ class DependentScopeDeclRefExpr : public Expr {
                             const TemplateArgumentListInfo *Args);
 
 public:
-  static DependentScopeDeclRefExpr *Create(ASTContext &C,
+  static DependentScopeDeclRefExpr *Create(const ASTContext &C,
                                            NestedNameSpecifierLoc QualifierLoc,
                                            SourceLocation TemplateKWLoc,
                                            const DeclarationNameInfo &NameInfo,
                               const TemplateArgumentListInfo *TemplateArgs);
 
-  static DependentScopeDeclRefExpr *CreateEmpty(ASTContext &C,
+  static DependentScopeDeclRefExpr *CreateEmpty(const ASTContext &C,
                                                 bool HasTemplateKWAndArgsInfo,
                                                 unsigned NumTemplateArgs);
 
@@ -2723,13 +2814,14 @@ public:
   DeclarationName getDeclName() const { return NameInfo.getName(); }
 
   /// \brief Retrieve the location of the name within the expression.
+  ///
+  /// For example, in "X<T>::value" this is the location of "value".
   SourceLocation getLocation() const { return NameInfo.getLoc(); }
 
   /// \brief Retrieve the nested-name-specifier that qualifies the
   /// name, with source location information.
   NestedNameSpecifierLoc getQualifierLoc() const { return QualifierLoc; }
 
-
   /// \brief Retrieve the nested-name-specifier that qualifies this
   /// declaration.
   NestedNameSpecifier *getQualifier() const {
@@ -2779,6 +2871,7 @@ public:
   }
 
   /// \brief Retrieves the optional explicit template arguments.
+  ///
   /// This points to the same data as getExplicitTemplateArgs(), but
   /// returns null if there are no explicit template arguments.
   const ASTTemplateArgumentListInfo *getOptionalExplicitTemplateArgs() const {
@@ -2800,6 +2893,8 @@ public:
     return getExplicitTemplateArgs().NumTemplateArgs;
   }
 
+  /// Note: getLocStart() is the start of the whole DependentScopeDeclRefExpr,
+  /// and differs from getLocation().getStart().
   SourceLocation getLocStart() const LLVM_READONLY {
     return QualifierLoc.getBeginLoc();
   }
@@ -2819,7 +2914,7 @@ public:
   friend class ASTStmtWriter;
 };
 
-/// Represents an expression --- generally a full-expression --- which
+/// Represents an expression -- generally a full-expression -- that
 /// introduces cleanups to be run at the end of the sub-expression's
 /// evaluation.  The most common source of expression-introduced
 /// cleanups is temporary objects in C++, but several other kinds of
@@ -2852,10 +2947,10 @@ private:
   friend class ASTStmtReader;
 
 public:
-  static ExprWithCleanups *Create(ASTContext &C, EmptyShell empty,
+  static ExprWithCleanups *Create(const ASTContext &C, EmptyShell empty,
                                   unsigned numObjects);
 
-  static ExprWithCleanups *Create(ASTContext &C, Expr *subexpr,
+  static ExprWithCleanups *Create(const ASTContext &C, Expr *subexpr,
                                   ArrayRef<CleanupObject> objects);
 
   ArrayRef<CleanupObject> getObjects() const {
@@ -2872,7 +2967,7 @@ public:
   Expr *getSubExpr() { return cast<Expr>(SubExpr); }
   const Expr *getSubExpr() const { return cast<Expr>(SubExpr); }
 
-  /// setSubExpr - As with any mutator of the AST, be very careful
+  /// As with any mutator of the AST, be very careful
   /// when modifying an existing AST to preserve its invariants.
   void setSubExpr(Expr *E) { SubExpr = E; }
 
@@ -2935,13 +3030,13 @@ class CXXUnresolvedConstructExpr : public Expr {
   friend class ASTStmtReader;
 
 public:
-  static CXXUnresolvedConstructExpr *Create(ASTContext &C,
+  static CXXUnresolvedConstructExpr *Create(const ASTContext &C,
                                             TypeSourceInfo *Type,
                                             SourceLocation LParenLoc,
                                             ArrayRef<Expr*> Args,
                                             SourceLocation RParenLoc);
 
-  static CXXUnresolvedConstructExpr *CreateEmpty(ASTContext &C,
+  static CXXUnresolvedConstructExpr *CreateEmpty(const ASTContext &C,
                                                  unsigned NumArgs);
 
   /// \brief Retrieve the type that is being constructed, as specified
@@ -2993,7 +3088,10 @@ public:
   }
 
   SourceLocation getLocStart() const LLVM_READONLY;
-  SourceLocation getLocEnd() const LLVM_READONLY { return RParenLoc; }
+  SourceLocation getLocEnd() const LLVM_READONLY {
+    assert(RParenLoc.isValid() || NumArgs == 1);
+    return RParenLoc.isValid() ? RParenLoc : getArg(0)->getLocEnd();
+  }
 
   static bool classof(const Stmt *T) {
     return T->getStmtClass() == CXXUnresolvedConstructExprClass;
@@ -3047,6 +3145,7 @@ class CXXDependentScopeMemberExpr : public Expr {
 
   /// \brief The member to which this member expression refers, which
   /// can be name, overloaded operator, or destructor.
+  ///
   /// FIXME: could also be a template-id
   DeclarationNameInfo MemberNameInfo;
 
@@ -3061,36 +3160,32 @@ class CXXDependentScopeMemberExpr : public Expr {
       ->getTemplateKWAndArgsInfo();
   }
 
-  CXXDependentScopeMemberExpr(ASTContext &C,
-                          Expr *Base, QualType BaseType, bool IsArrow,
-                          SourceLocation OperatorLoc,
-                          NestedNameSpecifierLoc QualifierLoc,
-                          SourceLocation TemplateKWLoc,
-                          NamedDecl *FirstQualifierFoundInScope,
-                          DeclarationNameInfo MemberNameInfo,
-                          const TemplateArgumentListInfo *TemplateArgs);
+  CXXDependentScopeMemberExpr(const ASTContext &C, Expr *Base,
+                              QualType BaseType, bool IsArrow,
+                              SourceLocation OperatorLoc,
+                              NestedNameSpecifierLoc QualifierLoc,
+                              SourceLocation TemplateKWLoc,
+                              NamedDecl *FirstQualifierFoundInScope,
+                              DeclarationNameInfo MemberNameInfo,
+                              const TemplateArgumentListInfo *TemplateArgs);
 
 public:
-  CXXDependentScopeMemberExpr(ASTContext &C,
-                              Expr *Base, QualType BaseType,
-                              bool IsArrow,
+  CXXDependentScopeMemberExpr(const ASTContext &C, Expr *Base,
+                              QualType BaseType, bool IsArrow,
                               SourceLocation OperatorLoc,
                               NestedNameSpecifierLoc QualifierLoc,
                               NamedDecl *FirstQualifierFoundInScope,
                               DeclarationNameInfo MemberNameInfo);
 
   static CXXDependentScopeMemberExpr *
-  Create(ASTContext &C,
-         Expr *Base, QualType BaseType, bool IsArrow,
-         SourceLocation OperatorLoc,
-         NestedNameSpecifierLoc QualifierLoc,
-         SourceLocation TemplateKWLoc,
-         NamedDecl *FirstQualifierFoundInScope,
+  Create(const ASTContext &C, Expr *Base, QualType BaseType, bool IsArrow,
+         SourceLocation OperatorLoc, NestedNameSpecifierLoc QualifierLoc,
+         SourceLocation TemplateKWLoc, NamedDecl *FirstQualifierFoundInScope,
          DeclarationNameInfo MemberNameInfo,
          const TemplateArgumentListInfo *TemplateArgs);
 
   static CXXDependentScopeMemberExpr *
-  CreateEmpty(ASTContext &C, bool HasTemplateKWAndArgsInfo,
+  CreateEmpty(const ASTContext &C, bool HasTemplateKWAndArgsInfo,
               unsigned NumTemplateArgs);
 
   /// \brief True if this is an implicit access, i.e. one in which the
@@ -3197,6 +3292,7 @@ public:
   }
 
   /// \brief Retrieves the optional explicit template arguments.
+  ///
   /// This points to the same data as getExplicitTemplateArgs(), but
   /// returns null if there are no explicit template arguments.
   const ASTTemplateArgumentListInfo *getOptionalExplicitTemplateArgs() const {
@@ -3259,11 +3355,13 @@ public:
 /// produced a set of overloaded functions.
 ///
 /// The member access may be explicit or implicit:
+/// \code
 ///    struct A {
 ///      int a, b;
 ///      int explicitAccess() { return this->a + this->A::b; }
 ///      int implicitAccess() { return a + A::b; }
 ///    };
+/// \endcode
 ///
 /// In the final AST, an explicit access always becomes a MemberExpr.
 /// An implicit access may become either a MemberExpr or a
@@ -3278,17 +3376,18 @@ class UnresolvedMemberExpr : public OverloadExpr {
   bool HasUnresolvedUsing : 1;
 
   /// \brief The expression for the base pointer or class reference,
-  /// e.g., the \c x in x.f.  This can be null if this is an 'unbased'
-  /// member expression
+  /// e.g., the \c x in x.f.
+  ///
+  /// This can be null if this is an 'unbased' member expression.
   Stmt *Base;
 
-  /// \brief The type of the base expression;  never null.
+  /// \brief The type of the base expression; never null.
   QualType BaseType;
 
   /// \brief The location of the '->' or '.' operator.
   SourceLocation OperatorLoc;
 
-  UnresolvedMemberExpr(ASTContext &C, bool HasUnresolvedUsing,
+  UnresolvedMemberExpr(const ASTContext &C, bool HasUnresolvedUsing,
                        Expr *Base, QualType BaseType, bool IsArrow,
                        SourceLocation OperatorLoc,
                        NestedNameSpecifierLoc QualifierLoc,
@@ -3305,7 +3404,7 @@ class UnresolvedMemberExpr : public OverloadExpr {
 
 public:
   static UnresolvedMemberExpr *
-  Create(ASTContext &C, bool HasUnresolvedUsing,
+  Create(const ASTContext &C, bool HasUnresolvedUsing,
          Expr *Base, QualType BaseType, bool IsArrow,
          SourceLocation OperatorLoc,
          NestedNameSpecifierLoc QualifierLoc,
@@ -3315,12 +3414,13 @@ public:
          UnresolvedSetIterator Begin, UnresolvedSetIterator End);
 
   static UnresolvedMemberExpr *
-  CreateEmpty(ASTContext &C, bool HasTemplateKWAndArgsInfo,
+  CreateEmpty(const ASTContext &C, bool HasTemplateKWAndArgsInfo,
               unsigned NumTemplateArgs);
 
-  /// \brief True if this is an implicit access, i.e. one in which the
-  /// member being accessed was not written in the source.  The source
-  /// location of the operator is invalid in this case.
+  /// \brief True if this is an implicit access, i.e., one in which the
+  /// member being accessed was not written in the source.
+  ///
+  /// The source location of the operator is invalid in this case.
   bool isImplicitAccess() const;
 
   /// \brief Retrieve the base object of this member expressions,
@@ -3347,7 +3447,7 @@ public:
   /// \brief Retrieve the location of the '->' or '.' operator.
   SourceLocation getOperatorLoc() const { return OperatorLoc; }
 
-  /// \brief Retrieves the naming class of this lookup.
+  /// \brief Retrieve the naming class of this lookup.
   CXXRecordDecl *getNamingClass() const;
 
   /// \brief Retrieve the full name info for the member that this expression
@@ -3362,6 +3462,10 @@ public:
   // expression refers to.
   SourceLocation getMemberLoc() const { return getNameLoc(); }
 
+  // \brief Return the preferred location (the member name) for the arrow when
+  // diagnosing a problem with this expression.
+  SourceLocation getExprLoc() const LLVM_READONLY { return getMemberLoc(); }
+
   SourceLocation getLocStart() const LLVM_READONLY {
     if (!isImplicitAccess())
       return Base->getLocStart();
@@ -3386,7 +3490,7 @@ public:
   }
 };
 
-/// \brief Represents a C++0x noexcept expression (C++ [expr.unary.noexcept]).
+/// \brief Represents a C++11 noexcept expression (C++ [expr.unary.noexcept]).
 ///
 /// The noexcept expression tests whether a given expression might throw. Its
 /// result is a boolean constant.
@@ -3428,7 +3532,7 @@ public:
   child_range children() { return child_range(&Operand, &Operand + 1); }
 };
 
-/// \brief Represents a C++0x pack expansion that produces a sequence of
+/// \brief Represents a C++11 pack expansion that produces a sequence of
 /// expressions.
 ///
 /// A pack expansion expression contains a pattern (which itself is an
@@ -3527,7 +3631,7 @@ inline ASTTemplateKWAndArgsInfo *OverloadExpr::getTemplateKWAndArgsInfo() {
 /// };
 /// \endcode
 class SizeOfPackExpr : public Expr {
-  /// \brief The location of the 'sizeof' keyword.
+  /// \brief The location of the \c sizeof keyword.
   SourceLocation OperatorLoc;
 
   /// \brief The location of the name of the parameter pack.
@@ -3550,7 +3654,7 @@ class SizeOfPackExpr : public Expr {
   friend class ASTStmtWriter;
 
 public:
-  /// \brief Creates a value-dependent expression that computes the length of
+  /// \brief Create a value-dependent expression that computes the length of
   /// the given parameter pack.
   SizeOfPackExpr(QualType SizeType, SourceLocation OperatorLoc, NamedDecl *Pack,
                  SourceLocation PackLoc, SourceLocation RParenLoc)
@@ -3561,7 +3665,7 @@ public:
       OperatorLoc(OperatorLoc), PackLoc(PackLoc), RParenLoc(RParenLoc),
       Length(0), Pack(Pack) { }
 
-  /// \brief Creates an expression that computes the length of
+  /// \brief Create an expression that computes the length of
   /// the given parameter pack, which is already known.
   SizeOfPackExpr(QualType SizeType, SourceLocation OperatorLoc, NamedDecl *Pack,
                  SourceLocation PackLoc, SourceLocation RParenLoc,
@@ -3744,11 +3848,11 @@ class FunctionParmPackExpr : public Expr {
   friend class ASTStmtReader;
 
 public:
-  static FunctionParmPackExpr *Create(ASTContext &Context, QualType T,
+  static FunctionParmPackExpr *Create(const ASTContext &Context, QualType T,
                                       ParmVarDecl *ParamPack,
                                       SourceLocation NameLoc,
                                       ArrayRef<Decl *> Params);
-  static FunctionParmPackExpr *CreateEmpty(ASTContext &Context,
+  static FunctionParmPackExpr *CreateEmpty(const ASTContext &Context,
                                            unsigned NumParams);
 
   /// \brief Get the parameter pack which this expression refers to.
@@ -3779,7 +3883,7 @@ public:
   child_range children() { return child_range(); }
 };
 
-/// \brief Represents a prvalue temporary that written into memory so that
+/// \brief Represents a prvalue temporary that is written into memory so that
 /// a reference can bind to it.
 ///
 /// Prvalue expressions are materialized when they need to have an address
@@ -3795,30 +3899,60 @@ public:
 /// binds to the temporary. \c MaterializeTemporaryExprs are always glvalues
 /// (either an lvalue or an xvalue, depending on the kind of reference binding
 /// to it), maintaining the invariant that references always bind to glvalues.
+///
+/// Reference binding and copy-elision can both extend the lifetime of a
+/// temporary. When either happens, the expression will also track the
+/// declaration which is responsible for the lifetime extension.
 class MaterializeTemporaryExpr : public Expr {
+public:
   /// \brief The temporary-generating expression whose value will be
   /// materialized.
   Stmt *Temporary;
 
+  /// \brief The declaration which lifetime-extended this reference, if any.
+  /// Either a VarDecl, or (for a ctor-initializer) a FieldDecl.
+  const ValueDecl *ExtendingDecl;
+
   friend class ASTStmtReader;
   friend class ASTStmtWriter;
 
 public:
   MaterializeTemporaryExpr(QualType T, Expr *Temporary,
-                           bool BoundToLvalueReference)
+                           bool BoundToLvalueReference,
+                           const ValueDecl *ExtendedBy)
     : Expr(MaterializeTemporaryExprClass, T,
            BoundToLvalueReference? VK_LValue : VK_XValue, OK_Ordinary,
            Temporary->isTypeDependent(), Temporary->isValueDependent(),
            Temporary->isInstantiationDependent(),
            Temporary->containsUnexpandedParameterPack()),
-      Temporary(Temporary) { }
+      Temporary(Temporary), ExtendingDecl(ExtendedBy) {
+  }
 
   MaterializeTemporaryExpr(EmptyShell Empty)
     : Expr(MaterializeTemporaryExprClass, Empty) { }
 
   /// \brief Retrieve the temporary-generating subexpression whose value will
   /// be materialized into a glvalue.
-  Expr *GetTemporaryExpr() const { return reinterpret_cast<Expr *>(Temporary); }
+  Expr *GetTemporaryExpr() const { return static_cast<Expr *>(Temporary); }
+
+  /// \brief Retrieve the storage duration for the materialized temporary.
+  StorageDuration getStorageDuration() const {
+    if (!ExtendingDecl)
+      return SD_FullExpression;
+    // FIXME: This is not necessarily correct for a temporary materialized
+    // within a default initializer.
+    if (isa<FieldDecl>(ExtendingDecl))
+      return SD_Automatic;
+    return cast<VarDecl>(ExtendingDecl)->getStorageDuration();
+  }
+
+  /// \brief Get the declaration which triggered the lifetime-extension of this
+  /// temporary, if any.
+  const ValueDecl *getExtendingDecl() const { return ExtendingDecl; }
+
+  void setExtendingDecl(const ValueDecl *ExtendedBy) {
+    ExtendingDecl = ExtendedBy;
+  }
 
   /// \brief Determine whether this materialized temporary is bound to an
   /// lvalue reference; otherwise, it's bound to an rvalue reference.
diff --git a/include/clang/AST/ExprObjC.h b/include/clang/AST/ExprObjC.h
index a94c69a115d6..aeb55da1fb91 100644
--- a/include/clang/AST/ExprObjC.h
+++ b/include/clang/AST/ExprObjC.h
@@ -143,12 +143,13 @@ class ObjCArrayLiteral : public Expr {
     : Expr(ObjCArrayLiteralClass, Empty), NumElements(NumElements) {}
 
 public:
-  static ObjCArrayLiteral *Create(ASTContext &C, 
+  static ObjCArrayLiteral *Create(const ASTContext &C,
                                   ArrayRef<Expr *> Elements,
                                   QualType T, ObjCMethodDecl * Method,
                                   SourceRange SR);
 
-  static ObjCArrayLiteral *CreateEmpty(ASTContext &C, unsigned NumElements);
+  static ObjCArrayLiteral *CreateEmpty(const ASTContext &C,
+                                       unsigned NumElements);
 
   SourceLocation getLocStart() const LLVM_READONLY { return Range.getBegin(); }
   SourceLocation getLocEnd() const LLVM_READONLY { return Range.getEnd(); }
@@ -289,13 +290,13 @@ class ObjCDictionaryLiteral : public Expr {
   }
 
 public:
-  static ObjCDictionaryLiteral *Create(ASTContext &C,
+  static ObjCDictionaryLiteral *Create(const ASTContext &C,
                                        ArrayRef<ObjCDictionaryElement> VK, 
                                        bool HasPackExpansions,
                                        QualType T, ObjCMethodDecl *method,
                                        SourceRange SR);
   
-  static ObjCDictionaryLiteral *CreateEmpty(ASTContext &C, 
+  static ObjCDictionaryLiteral *CreateEmpty(const ASTContext &C,
                                             unsigned NumElements,
                                             bool HasPackExpansions);
   
@@ -807,7 +808,7 @@ public:
   explicit ObjCSubscriptRefExpr(EmptyShell Empty)
     : Expr(ObjCSubscriptRefExprClass, Empty) {}
   
-  static ObjCSubscriptRefExpr *Create(ASTContext &C,
+  static ObjCSubscriptRefExpr *Create(const ASTContext &C,
                                       Expr *base,
                                       Expr *key, QualType T, 
                                       ObjCMethodDecl *getMethod,
@@ -1003,13 +1004,13 @@ class ObjCMessageExpr : public Expr {
     return getNumSelectorLocs();
   }
 
-  static ObjCMessageExpr *alloc(ASTContext &C,
+  static ObjCMessageExpr *alloc(const ASTContext &C,
                                 ArrayRef<Expr *> Args,
                                 SourceLocation RBraceLoc,
                                 ArrayRef<SourceLocation> SelLocs,
                                 Selector Sel,
                                 SelectorLocationsKind &SelLocsK);
-  static ObjCMessageExpr *alloc(ASTContext &C,
+  static ObjCMessageExpr *alloc(const ASTContext &C,
                                 unsigned NumArgs,
                                 unsigned NumStoredSelLocs);
 
@@ -1051,7 +1052,7 @@ public:
   /// \param Args The message send arguments.
   ///
   /// \param RBracLoc The location of the closing square bracket ']'.
-  static ObjCMessageExpr *Create(ASTContext &Context, QualType T, 
+  static ObjCMessageExpr *Create(const ASTContext &Context, QualType T,
                                  ExprValueKind VK,
                                  SourceLocation LBracLoc,
                                  SourceLocation SuperLoc,
@@ -1087,7 +1088,7 @@ public:
   /// \param Args The message send arguments.
   ///
   /// \param RBracLoc The location of the closing square bracket ']'.
-  static ObjCMessageExpr *Create(ASTContext &Context, QualType T,
+  static ObjCMessageExpr *Create(const ASTContext &Context, QualType T,
                                  ExprValueKind VK,
                                  SourceLocation LBracLoc,
                                  TypeSourceInfo *Receiver,
@@ -1121,7 +1122,7 @@ public:
   /// \param Args The message send arguments.
   ///
   /// \param RBracLoc The location of the closing square bracket ']'.
-  static ObjCMessageExpr *Create(ASTContext &Context, QualType T,
+  static ObjCMessageExpr *Create(const ASTContext &Context, QualType T,
                                  ExprValueKind VK,
                                  SourceLocation LBracLoc,
                                  Expr *Receiver,
@@ -1139,7 +1140,7 @@ public:
   ///
   /// \param NumArgs The number of message arguments, not including
   /// the receiver.
-  static ObjCMessageExpr *CreateEmpty(ASTContext &Context,
+  static ObjCMessageExpr *CreateEmpty(const ASTContext &Context,
                                       unsigned NumArgs,
                                       unsigned NumStoredSelLocs);
 
diff --git a/include/clang/AST/ExternalASTSource.h b/include/clang/AST/ExternalASTSource.h
index 81fcf242b65e..b077426e6a47 100644
--- a/include/clang/AST/ExternalASTSource.h
+++ b/include/clang/AST/ExternalASTSource.h
@@ -329,7 +329,12 @@ public:
   /// \brief Whether this pointer is non-NULL.
   ///
   /// This operation does not require the AST node to be deserialized.
-  operator bool() const { return Ptr != 0; }
+  LLVM_EXPLICIT operator bool() const { return Ptr != 0; }
+
+  /// \brief Whether this pointer is non-NULL.
+  ///
+  /// This operation does not require the AST node to be deserialized.
+  bool isValid() const { return Ptr != 0; }
 
   /// \brief Whether this pointer is currently stored as an offset.
   bool isOffset() const { return Ptr & 0x01; }
diff --git a/include/clang/AST/GlobalDecl.h b/include/clang/AST/GlobalDecl.h
index c43e44c26f31..54c9d88c9b2e 100644
--- a/include/clang/AST/GlobalDecl.h
+++ b/include/clang/AST/GlobalDecl.h
@@ -41,6 +41,7 @@ public:
   GlobalDecl(const VarDecl *D) { Init(D);}
   GlobalDecl(const FunctionDecl *D) { Init(D); }
   GlobalDecl(const BlockDecl *D) { Init(D); }
+  GlobalDecl(const CapturedDecl *D) { Init(D); }
   GlobalDecl(const ObjCMethodDecl *D) { Init(D); }
 
   GlobalDecl(const CXXConstructorDecl *D, CXXCtorType Type)
diff --git a/include/clang/AST/LambdaMangleContext.h b/include/clang/AST/LambdaMangleContext.h
deleted file mode 100644
index bbaee26494a9..000000000000
--- a/include/clang/AST/LambdaMangleContext.h
+++ /dev/null
@@ -1,38 +0,0 @@
-//===--- LambdaMangleContext.h - Context for mangling lambdas ---*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-//  This file defines the LambdaMangleContext interface, which keeps track of
-//  the Itanium C++ ABI mangling numbers for lambda expressions.
-//
-//===----------------------------------------------------------------------===//
-#ifndef LLVM_CLANG_LAMBDAMANGLECONTEXT_H
-#define LLVM_CLANG_LAMBDAMANGLECONTEXT_H
-
-#include "clang/Basic/LLVM.h"
-#include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/IntrusiveRefCntPtr.h"
-
-namespace clang {
-
-class CXXMethodDecl;
-class FunctionProtoType;
-
-/// \brief Keeps track of the mangled names of lambda expressions within a
-/// particular context.
-class LambdaMangleContext : public RefCountedBase<LambdaMangleContext> {
-  llvm::DenseMap<const FunctionProtoType *, unsigned> ManglingNumbers;
-  
-public:
-  /// \brief Retrieve the mangling number of a new lambda expression with the
-  /// given call operator within this lambda context.
-  unsigned getManglingNumber(CXXMethodDecl *CallOperator);
-};
-  
-} // end namespace clang
-#endif
diff --git a/include/clang/AST/Mangle.h b/include/clang/AST/Mangle.h
index b6d22cfb5fd7..c4d0d22cdf0a 100644
--- a/include/clang/AST/Mangle.h
+++ b/include/clang/AST/Mangle.h
@@ -19,6 +19,7 @@
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/StringRef.h"
+#include "llvm/Support/Casting.h"
 #include "llvm/Support/raw_ostream.h"
 
 namespace clang {
@@ -64,18 +65,29 @@ private:
 /// MangleContext - Context for tracking state which persists across multiple
 /// calls to the C++ name mangler.
 class MangleContext {
+public:
+  enum ManglerKind {
+    MK_Itanium,
+    MK_Microsoft
+  };
+
+private:
   virtual void anchor();
 
   ASTContext &Context;
   DiagnosticsEngine &Diags;
+  const ManglerKind Kind;
 
   llvm::DenseMap<const BlockDecl*, unsigned> GlobalBlockIds;
   llvm::DenseMap<const BlockDecl*, unsigned> LocalBlockIds;
-  
+
 public:
+  ManglerKind getKind() const { return Kind; }
+
   explicit MangleContext(ASTContext &Context,
-                         DiagnosticsEngine &Diags)
-    : Context(Context), Diags(Diags) { }
+                         DiagnosticsEngine &Diags,
+                         ManglerKind Kind)
+      : Context(Context), Diags(Diags), Kind(Kind) {}
 
   virtual ~MangleContext() { }
 
@@ -96,8 +108,12 @@ public:
   /// @name Mangler Entry Points
   /// @{
 
-  virtual bool shouldMangleDeclName(const NamedDecl *D) = 0;
-  virtual void mangleName(const NamedDecl *D, raw_ostream &)=0;
+  bool shouldMangleDeclName(const NamedDecl *D);
+  virtual bool shouldMangleCXXName(const NamedDecl *D) = 0;
+
+  // FIXME: consider replacing raw_ostream & with something like SmallString &.
+  void mangleName(const NamedDecl *D, raw_ostream &);
+  virtual void mangleCXXName(const NamedDecl *D, raw_ostream &) = 0;
   virtual void mangleThunk(const CXXMethodDecl *MD,
                           const ThunkInfo &Thunk,
                           raw_ostream &) = 0;
@@ -106,13 +122,6 @@ public:
                                   raw_ostream &) = 0;
   virtual void mangleReferenceTemporary(const VarDecl *D,
                                         raw_ostream &) = 0;
-  virtual void mangleCXXVTable(const CXXRecordDecl *RD,
-                               raw_ostream &) = 0;
-  virtual void mangleCXXVTT(const CXXRecordDecl *RD,
-                            raw_ostream &) = 0;
-  virtual void mangleCXXCtorVTable(const CXXRecordDecl *RD, int64_t Offset,
-                                   const CXXRecordDecl *Type,
-                                   raw_ostream &) = 0;
   virtual void mangleCXXRTTI(QualType T, raw_ostream &) = 0;
   virtual void mangleCXXRTTIName(QualType T, raw_ostream &) = 0;
   virtual void mangleCXXCtor(const CXXConstructorDecl *D, CXXCtorType Type,
@@ -129,36 +138,78 @@ public:
                        const BlockDecl *BD, raw_ostream &Out);
   void mangleBlock(const DeclContext *DC, const BlockDecl *BD,
                    raw_ostream &Out);
-  // Do the right thing.
-  void mangleBlock(const BlockDecl *BD, raw_ostream &Out,
-                   const NamedDecl *ID=0);
 
-  void mangleObjCMethodName(const ObjCMethodDecl *MD,
-                            raw_ostream &);
+  void mangleObjCMethodName(const ObjCMethodDecl *MD, raw_ostream &);
 
-  // This is pretty lame.
-  virtual void mangleItaniumGuardVariable(const VarDecl *D,
-                                          raw_ostream &) {
-    llvm_unreachable("Target does not support mangling guard variables");
-  }
-  // FIXME: Revisit this once we know what we need to do for MSVC compatibility.
+  virtual void mangleStaticGuardVariable(const VarDecl *D, raw_ostream &) = 0;
+
+  virtual void mangleDynamicInitializer(const VarDecl *D, raw_ostream &) = 0;
+
+  virtual void mangleDynamicAtExitDestructor(const VarDecl *D,
+                                             raw_ostream &) = 0;
+
+  /// Generates a unique string for an externally visible type for use with TBAA
+  /// or type uniquing.
+  /// TODO: Extend this to internal types by generating names that are unique
+  /// across translation units so it can be used with LTO.
+  virtual void mangleTypeName(QualType T, raw_ostream &) = 0;
+
+  /// @}
+};
+
+class ItaniumMangleContext : public MangleContext {
+public:
+  explicit ItaniumMangleContext(ASTContext &C, DiagnosticsEngine &D)
+      : MangleContext(C, D, MK_Itanium) {}
+
+  virtual void mangleCXXVTable(const CXXRecordDecl *RD, raw_ostream &) = 0;
+  virtual void mangleCXXVTT(const CXXRecordDecl *RD, raw_ostream &) = 0;
+  virtual void mangleCXXCtorVTable(const CXXRecordDecl *RD, int64_t Offset,
+                                   const CXXRecordDecl *Type,
+                                   raw_ostream &) = 0;
   virtual void mangleItaniumThreadLocalInit(const VarDecl *D,
-                                            raw_ostream &) {
-    llvm_unreachable("Target does not support mangling thread_local variables");
-  }
+                                            raw_ostream &) = 0;
   virtual void mangleItaniumThreadLocalWrapper(const VarDecl *D,
-                                               raw_ostream &) {
-    llvm_unreachable("Target does not support mangling thread_local variables");
+                                               raw_ostream &) = 0;
+
+  static bool classof(const MangleContext *C) {
+    return C->getKind() == MK_Itanium;
   }
 
-  /// @}
+  static ItaniumMangleContext *create(ASTContext &Context,
+                                      DiagnosticsEngine &Diags);
 };
 
-MangleContext *createItaniumMangleContext(ASTContext &Context,
-                                          DiagnosticsEngine &Diags);
-MangleContext *createMicrosoftMangleContext(ASTContext &Context,
-                                            DiagnosticsEngine &Diags);
+class MicrosoftMangleContext : public MangleContext {
+public:
+  explicit MicrosoftMangleContext(ASTContext &C, DiagnosticsEngine &D)
+      : MangleContext(C, D, MK_Microsoft) {}
+
+  /// \brief Mangle vftable symbols.  Only a subset of the bases along the path
+  /// to the vftable are included in the name.  It's up to the caller to pick
+  /// them correctly.
+  virtual void mangleCXXVFTable(const CXXRecordDecl *Derived,
+                                ArrayRef<const CXXRecordDecl *> BasePath,
+                                raw_ostream &Out) = 0;
+
+  /// \brief Mangle vbtable symbols.  Only a subset of the bases along the path
+  /// to the vbtable are included in the name.  It's up to the caller to pick
+  /// them correctly.
+  virtual void mangleCXXVBTable(const CXXRecordDecl *Derived,
+                                ArrayRef<const CXXRecordDecl *> BasePath,
+                                raw_ostream &Out) = 0;
+
+  virtual void mangleVirtualMemPtrThunk(const CXXMethodDecl *MD,
+                                        uint64_t OffsetInVFTable,
+                                        raw_ostream &) = 0;
 
+  static bool classof(const MangleContext *C) {
+    return C->getKind() == MK_Microsoft;
+  }
+
+  static MicrosoftMangleContext *create(ASTContext &Context,
+                                        DiagnosticsEngine &Diags);
+};
 }
 
 #endif
diff --git a/include/clang/AST/MangleNumberingContext.h b/include/clang/AST/MangleNumberingContext.h
new file mode 100644
index 000000000000..5a227f201fbb
--- /dev/null
+++ b/include/clang/AST/MangleNumberingContext.h
@@ -0,0 +1,59 @@
+//=== MangleNumberingContext.h - Context for mangling numbers ---*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file defines the LambdaBlockMangleContext interface, which keeps track
+//  of the Itanium C++ ABI mangling numbers for lambda expressions and block
+//  literals.
+//
+//===----------------------------------------------------------------------===//
+#ifndef LLVM_CLANG_MANGLENUMBERINGCONTEXT_H
+#define LLVM_CLANG_MANGLENUMBERINGCONTEXT_H
+
+#include "clang/Basic/LLVM.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/IntrusiveRefCntPtr.h"
+
+namespace clang {
+
+class BlockDecl;
+class CXXMethodDecl;
+class IdentifierInfo;
+class TagDecl;
+class Type;
+class VarDecl;
+
+/// \brief Keeps track of the mangled names of lambda expressions and block
+/// literals within a particular context.
+class MangleNumberingContext 
+    : public RefCountedBase<MangleNumberingContext> {
+  llvm::DenseMap<const Type *, unsigned> ManglingNumbers;
+  llvm::DenseMap<IdentifierInfo*, unsigned> TagManglingNumbers;
+
+public:
+  virtual ~MangleNumberingContext() {}
+
+  /// \brief Retrieve the mangling number of a new lambda expression with the
+  /// given call operator within this context.
+  unsigned getManglingNumber(const CXXMethodDecl *CallOperator);
+
+  /// \brief Retrieve the mangling number of a new block literal within this
+  /// context.
+  unsigned getManglingNumber(const BlockDecl *BD);
+
+  /// \brief Retrieve the mangling number of a static local variable within
+  /// this context.
+  virtual unsigned getManglingNumber(const VarDecl *VD) = 0;
+
+  /// \brief Retrieve the mangling number of a static local variable within
+  /// this context.
+  unsigned getManglingNumber(const TagDecl *TD);
+};
+  
+} // end namespace clang
+#endif
diff --git a/include/clang/AST/NestedNameSpecifier.h b/include/clang/AST/NestedNameSpecifier.h
index 58f39862b102..b332b153fe8d 100644
--- a/include/clang/AST/NestedNameSpecifier.h
+++ b/include/clang/AST/NestedNameSpecifier.h
@@ -231,7 +231,11 @@ public:
 
   /// \brief Evalutes true when this nested-name-specifier location is
   /// non-empty.
-  operator bool() const { return Qualifier; }
+  LLVM_EXPLICIT operator bool() const { return Qualifier; }
+
+  /// \brief Evalutes true when this nested-name-specifier location is
+  /// empty.
+  bool hasQualifier() const { return Qualifier; }
 
   /// \brief Retrieve the nested-name-specifier to which this instance
   /// refers.
diff --git a/include/clang/AST/ParentMap.h b/include/clang/AST/ParentMap.h
index 62eae02c1525..bd2ebf5dbedb 100644
--- a/include/clang/AST/ParentMap.h
+++ b/include/clang/AST/ParentMap.h
@@ -29,6 +29,11 @@ public:
   /// visited and updated or inserted but not the parents of S.
   void addStmt(Stmt* S);
 
+  /// Manually sets the parent of \p S to \p Parent.
+  ///
+  /// If \p S is already in the map, this method will update the mapping.
+  void setParent(const Stmt *S, const Stmt *Parent);
+
   Stmt *getParent(Stmt*) const;
   Stmt *getParentIgnoreParens(Stmt *) const;
   Stmt *getParentIgnoreParenCasts(Stmt *) const;
diff --git a/include/clang/AST/PrettyPrinter.h b/include/clang/AST/PrettyPrinter.h
index e3c09e7b418f..76426991cf47 100644
--- a/include/clang/AST/PrettyPrinter.h
+++ b/include/clang/AST/PrettyPrinter.h
@@ -39,8 +39,9 @@ struct PrintingPolicy {
       SuppressTagKeyword(false), SuppressTag(false), SuppressScope(false),
       SuppressUnwrittenScope(false), SuppressInitializers(false),
       ConstantArraySizeAsWritten(false), AnonymousTagLocations(true),
-      SuppressStrongLifetime(false), Bool(LO.Bool),
-      TerseOutput(false), PolishForDeclaration(false) { }
+      SuppressStrongLifetime(false), SuppressLifetimeQualifiers(false),
+      Bool(LO.Bool), TerseOutput(false), PolishForDeclaration(false),
+      MSWChar(LO.MicrosoftExt && !LO.WChar) { }
 
   /// \brief What language we're printing.
   LangOptions LangOpts;
@@ -131,6 +132,10 @@ struct PrintingPolicy {
   /// ARC.
   unsigned SuppressStrongLifetime : 1;
   
+  /// \brief When true, suppress printing of lifetime qualifier in
+  /// ARC.
+  unsigned SuppressLifetimeQualifiers : 1;
+  
   /// \brief Whether we can use 'bool' rather than '_Bool', even if the language
   /// doesn't actually have 'bool' (because, e.g., it is defined as a macro).
   unsigned Bool : 1;
@@ -146,6 +151,10 @@ struct PrintingPolicy {
   /// declaration tag; such as, do not print attributes attached to the declaration.
   ///
   unsigned PolishForDeclaration : 1;
+
+  /// \brief When true, print the built-in wchar_t type as __wchar_t. For use in
+  /// Microsoft mode when wchar_t is not available.
+  unsigned MSWChar : 1;
 };
 
 } // end namespace clang
diff --git a/include/clang/AST/RawCommentList.h b/include/clang/AST/RawCommentList.h
index 84a6e96fa01a..a4fcc108eb5d 100644
--- a/include/clang/AST/RawCommentList.h
+++ b/include/clang/AST/RawCommentList.h
@@ -107,12 +107,9 @@ public:
     return RawText;
   }
 
-  SourceRange getSourceRange() const LLVM_READONLY {
-    return Range;
-  }
-
-  unsigned getBeginLine(const SourceManager &SM) const;
-  unsigned getEndLine(const SourceManager &SM) const;
+  SourceRange getSourceRange() const LLVM_READONLY { return Range; }
+  SourceLocation getLocStart() const LLVM_READONLY { return Range.getBegin(); }
+  SourceLocation getLocEnd() const LLVM_READONLY { return Range.getEnd(); }
 
   const char *getBriefText(const ASTContext &Context) const {
     if (BriefTextValid)
@@ -146,11 +143,6 @@ private:
   /// considered as documentation comments.
   bool ParseAllComments : 1;
 
-  mutable bool BeginLineValid : 1; ///< True if BeginLine is valid
-  mutable bool EndLineValid : 1;   ///< True if EndLine is valid
-  mutable unsigned BeginLine;      ///< Cached line number
-  mutable unsigned EndLine;        ///< Cached line number
-
   /// \brief Constructor for AST deserialization.
   RawComment(SourceRange SR, CommentKind K, bool IsTrailingComment,
              bool IsAlmostTrailingComment,
@@ -158,8 +150,7 @@ private:
     Range(SR), RawTextValid(false), BriefTextValid(false), Kind(K),
     IsAttached(false), IsTrailingComment(IsTrailingComment),
     IsAlmostTrailingComment(IsAlmostTrailingComment),
-    ParseAllComments(ParseAllComments),
-    BeginLineValid(false), EndLineValid(false)
+    ParseAllComments(ParseAllComments)
   { }
 
   StringRef getRawTextSlow(const SourceManager &SourceMgr) const;
@@ -178,8 +169,7 @@ public:
   explicit BeforeThanCompare(const SourceManager &SM) : SM(SM) { }
 
   bool operator()(const RawComment &LHS, const RawComment &RHS) {
-    return SM.isBeforeInTranslationUnit(LHS.getSourceRange().getBegin(),
-                                        RHS.getSourceRange().getBegin());
+    return SM.isBeforeInTranslationUnit(LHS.getLocStart(), RHS.getLocStart());
   }
 
   bool operator()(const RawComment *LHS, const RawComment *RHS) {
@@ -191,8 +181,7 @@ public:
 /// sorted in order of appearance in the translation unit.
 class RawCommentList {
 public:
-  RawCommentList(SourceManager &SourceMgr) :
-    SourceMgr(SourceMgr), OnlyWhitespaceSeen(true) { }
+  RawCommentList(SourceManager &SourceMgr) : SourceMgr(SourceMgr) {}
 
   void addComment(const RawComment &RC, llvm::BumpPtrAllocator &Allocator);
 
@@ -203,15 +192,9 @@ public:
 private:
   SourceManager &SourceMgr;
   std::vector<RawComment *> Comments;
-  SourceLocation PrevCommentEndLoc;
-  bool OnlyWhitespaceSeen;
 
   void addCommentsToFront(const std::vector<RawComment *> &C) {
-    size_t OldSize = Comments.size();
-    Comments.resize(C.size() + OldSize);
-    std::copy_backward(Comments.begin(), Comments.begin() + OldSize,
-                       Comments.end());
-    std::copy(C.begin(), C.end(), Comments.begin());
+    Comments.insert(Comments.begin(), C.begin(), C.end());
   }
 
   friend class ASTReader;
diff --git a/include/clang/AST/RecordLayout.h b/include/clang/AST/RecordLayout.h
index 36556469eaf8..7268b3a8240c 100644
--- a/include/clang/AST/RecordLayout.h
+++ b/include/clang/AST/RecordLayout.h
@@ -93,10 +93,22 @@ private:
     /// HasOwnVFPtr - Does this class provide a virtual function table
     /// (vtable in Itanium, vftbl in Microsoft) that is independent from
     /// its base classes?
-    bool HasOwnVFPtr; // TODO: stash this somewhere more efficient
+    bool HasOwnVFPtr : 1;
+
+    /// HasVFPtr - Does this class have a vftable that could be extended by
+    /// a derived class.  The class may have inherited this pointer from
+    /// a primary base class.
+    bool HasExtendableVFPtr : 1;
+
+    /// AlignAfterVBases - Force appropriate alignment after virtual bases are
+    /// laid out in MS-C++-ABI.
+    bool AlignAfterVBases : 1;
     
     /// PrimaryBase - The primary base info for this record.
     llvm::PointerIntPair<const CXXRecordDecl *, 1, bool> PrimaryBase;
+
+    /// BaseSharingVBPtr - The base we share vbptr with.
+    const CXXRecordDecl *BaseSharingVBPtr;
     
     /// FIXME: This should really use a SmallPtrMap, once we have one in LLVM :)
     typedef llvm::DenseMap<const CXXRecordDecl *, CharUnits> BaseOffsetsMapTy;
@@ -122,13 +134,16 @@ private:
   typedef CXXRecordLayoutInfo::BaseOffsetsMapTy BaseOffsetsMapTy;
   ASTRecordLayout(const ASTContext &Ctx,
                   CharUnits size, CharUnits alignment,
-                  bool hasOwnVFPtr, CharUnits vbptroffset,
+                  bool hasOwnVFPtr, bool hasExtendableVFPtr,
+                  CharUnits vbptroffset,
                   CharUnits datasize,
                   const uint64_t *fieldoffsets, unsigned fieldcount,
                   CharUnits nonvirtualsize, CharUnits nonvirtualalign,
                   CharUnits SizeOfLargestEmptySubobject,
                   const CXXRecordDecl *PrimaryBase,
                   bool IsPrimaryBaseVirtual,
+                  const CXXRecordDecl *BaseSharingVBPtr,
+                  bool ForceAlign,
                   const BaseOffsetsMapTy& BaseOffsets,
                   const VBaseOffsetsMapTy& VBaseOffsets);
 
@@ -226,6 +241,37 @@ public:
     return CXXInfo->HasOwnVFPtr;
   }
 
+  /// hasVFPtr - Does this class have a virtual function table pointer
+  /// that can be extended by a derived class?  This is synonymous with
+  /// this class having a VFPtr at offset zero.
+  bool hasExtendableVFPtr() const {
+    assert(CXXInfo && "Record layout does not have C++ specific info!");
+    return CXXInfo->HasExtendableVFPtr;
+  }
+  
+  /// hasOwnVBPtr - Does this class provide its own virtual-base
+  /// table pointer, rather than inheriting one from a primary base
+  /// class?
+  ///
+  /// This implies that the ABI has no primary base class, meaning
+  /// that it has no base classes that are suitable under the conditions
+  /// of the ABI.
+  bool hasOwnVBPtr() const {
+    assert(CXXInfo && "Record layout does not have C++ specific info!");
+    return hasVBPtr() && !CXXInfo->BaseSharingVBPtr;
+  }
+
+  /// hasVBPtr - Does this class have a virtual function table pointer.
+  bool hasVBPtr() const {
+    assert(CXXInfo && "Record layout does not have C++ specific info!");
+    return !CXXInfo->VBPtrOffset.isNegative();
+  }
+
+  bool getAlignAfterVBases() const {
+    assert(CXXInfo && "Record layout does not have C++ specific info!");
+    return CXXInfo->AlignAfterVBases;
+  }
+
   /// getVBPtrOffset - Get the offset for virtual base table pointer.
   /// This is only meaningful with the Microsoft ABI.
   CharUnits getVBPtrOffset() const {
@@ -233,6 +279,11 @@ public:
     return CXXInfo->VBPtrOffset;
   }
 
+  const CXXRecordDecl *getBaseSharingVBPtr() const {
+    assert(CXXInfo && "Record layout does not have C++ specific info!");
+    return CXXInfo->BaseSharingVBPtr;
+  }
+
   const VBaseOffsetsMapTy &getVBaseOffsetsMap() const {
     assert(CXXInfo && "Record layout does not have C++ specific info!");
     return CXXInfo->VBaseOffsets;
diff --git a/include/clang/AST/RecursiveASTVisitor.h b/include/clang/AST/RecursiveASTVisitor.h
index b5a4b5e36d7d..d09550f0e2c2 100644
--- a/include/clang/AST/RecursiveASTVisitor.h
+++ b/include/clang/AST/RecursiveASTVisitor.h
@@ -27,6 +27,7 @@
 #include "clang/AST/Stmt.h"
 #include "clang/AST/StmtCXX.h"
 #include "clang/AST/StmtObjC.h"
+#include "clang/AST/StmtOpenMP.h"
 #include "clang/AST/TemplateBase.h"
 #include "clang/AST/TemplateName.h"
 #include "clang/AST/Type.h"
@@ -108,7 +109,7 @@ namespace clang {
 /// Note that since WalkUpFromFoo() calls WalkUpFromBar() (where Bar
 /// is Foo's super class) before calling VisitFoo(), the result is
 /// that the Visit*() methods for a given node are called in the
-/// top-down order (e.g. for a node of type NamedDecl, the order will
+/// top-down order (e.g. for a node of type NamespaceDecl, the order will
 /// be VisitDecl(), VisitNamedDecl(), and then VisitNamespaceDecl()).
 ///
 /// This scheme guarantees that all Visit*() calls for the same AST
@@ -243,8 +244,16 @@ public:
   /// \brief Recursively visit a lambda capture.
   ///
   /// \returns false if the visitation was terminated early, true otherwise.
-  bool TraverseLambdaCapture(LambdaExpr::Capture C);
-  
+  bool TraverseLambdaCapture(LambdaExpr *LE, const LambdaExpr::Capture *C);
+
+  /// \brief Recursively visit the body of a lambda expression.
+  ///
+  /// This provides a hook for visitors that need more context when visiting
+  /// \c LE->getBody().
+  ///
+  /// \returns false if the visitation was terminated early, true otherwise.
+  bool TraverseLambdaBody(LambdaExpr *LE);
+
   // ---- Methods on Stmts ----
 
   // Declare Traverse*() for all concrete Stmt classes.
@@ -342,7 +351,7 @@ public:
   // ---- Methods on TypeLocs ----
   // FIXME: this currently just calls the matching Type methods
 
-  // Declare Traverse*() for all concrete Type classes.
+  // Declare Traverse*() for all concrete TypeLoc classes.
 #define ABSTRACT_TYPELOC(CLASS, BASE)
 #define TYPELOC(CLASS, BASE) \
   bool Traverse##CLASS##TypeLoc(CLASS##TypeLoc TL);
@@ -398,8 +407,12 @@ public:
 private:
   // These are helper methods used by more than one Traverse* method.
   bool TraverseTemplateParameterListHelper(TemplateParameterList *TPL);
-  bool TraverseClassInstantiations(ClassTemplateDecl *D);
-  bool TraverseFunctionInstantiations(FunctionTemplateDecl *D) ;
+#define DEF_TRAVERSE_TMPL_INST(TMPLDECLKIND)                                   \
+  bool TraverseTemplateInstantiations(TMPLDECLKIND##TemplateDecl *D);
+  DEF_TRAVERSE_TMPL_INST(Class)
+  DEF_TRAVERSE_TMPL_INST(Var)
+  DEF_TRAVERSE_TMPL_INST(Function)
+#undef DEF_TRAVERSE_TMPL_INST
   bool TraverseTemplateArgumentLocsHelper(const TemplateArgumentLoc *TAL,
                                           unsigned Count);
   bool TraverseArrayTypeLocHelper(ArrayTypeLoc TL);
@@ -409,6 +422,13 @@ private:
   bool TraverseDeclContextHelper(DeclContext *DC);
   bool TraverseFunctionHelper(FunctionDecl *D);
   bool TraverseVarHelper(VarDecl *D);
+  bool TraverseOMPClause(OMPClause *C);
+#define OPENMP_CLAUSE(Name, Class)                                      \
+  bool Visit##Class(Class *C);
+#include "clang/Basic/OpenMPKinds.def"
+  /// \brief Process clauses with list of variables.
+  template <typename T>
+  void VisitOMPClauseList(T *Node);
 
   struct EnqueueJob {
     Stmt *S;
@@ -802,10 +822,20 @@ bool RecursiveASTVisitor<Derived>::TraverseConstructorInitializer(
 }
 
 template<typename Derived>
-bool RecursiveASTVisitor<Derived>::TraverseLambdaCapture(LambdaExpr::Capture C){
+bool RecursiveASTVisitor<Derived>::TraverseLambdaCapture(
+    LambdaExpr *LE, const LambdaExpr::Capture *C) {
+  if (C->isInitCapture())
+    TRY_TO(TraverseDecl(C->getCapturedVar()));
+  return true;
+}
+
+template<typename Derived>
+bool RecursiveASTVisitor<Derived>::TraverseLambdaBody(LambdaExpr *LE) {
+  TRY_TO(TraverseStmt(LE->getBody()));
   return true;
 }
 
+
 // ----------------- Type traversal -----------------
 
 // This macro makes available a variable T, the passed-in type.
@@ -844,6 +874,10 @@ DEF_TRAVERSE_TYPE(MemberPointerType, {
     TRY_TO(TraverseType(T->getPointeeType()));
   })
 
+DEF_TRAVERSE_TYPE(DecayedType, {
+    TRY_TO(TraverseType(T->getOriginalType()));
+  })
+
 DEF_TRAVERSE_TYPE(ConstantArrayType, {
     TRY_TO(TraverseType(T->getElementType()));
   })
@@ -1050,6 +1084,10 @@ DEF_TRAVERSE_TYPELOC(MemberPointerType, {
     TRY_TO(TraverseTypeLoc(TL.getPointeeLoc()));
   })
 
+DEF_TRAVERSE_TYPELOC(DecayedType, {
+    TRY_TO(TraverseTypeLoc(TL.getOriginalLoc()));
+  })
+
 template<typename Derived>
 bool RecursiveASTVisitor<Derived>::TraverseArrayTypeLocHelper(ArrayTypeLoc TL) {
   // This isn't available for ArrayType, but is for the ArrayTypeLoc.
@@ -1420,59 +1458,44 @@ bool RecursiveASTVisitor<Derived>::TraverseTemplateParameterListHelper(
   return true;
 }
 
-// A helper method for traversing the implicit instantiations of a
-// class template.
-template<typename Derived>
-bool RecursiveASTVisitor<Derived>::TraverseClassInstantiations(
-    ClassTemplateDecl *D) {
-  ClassTemplateDecl::spec_iterator end = D->spec_end();
-  for (ClassTemplateDecl::spec_iterator it = D->spec_begin(); it != end; ++it) {
-    ClassTemplateSpecializationDecl* SD = *it;
-
-    switch (SD->getSpecializationKind()) {
-    // Visit the implicit instantiations with the requested pattern.
-    case TSK_Undeclared:
-    case TSK_ImplicitInstantiation:
-      TRY_TO(TraverseDecl(SD));
-      break;
-
-    // We don't need to do anything on an explicit instantiation
-    // or explicit specialization because there will be an explicit
-    // node for it elsewhere.
-    case TSK_ExplicitInstantiationDeclaration:
-    case TSK_ExplicitInstantiationDefinition:
-    case TSK_ExplicitSpecialization:
-      break;
-    }
-  }
-
-  return true;
+#define DEF_TRAVERSE_TMPL_INST(TMPLDECLKIND)                                 \
+/* A helper method for traversing the implicit instantiations of a
+   class or variable template. */                                            \
+template<typename Derived>                                                   \
+bool RecursiveASTVisitor<Derived>::TraverseTemplateInstantiations(           \
+    TMPLDECLKIND##TemplateDecl *D) {                                         \
+  TMPLDECLKIND##TemplateDecl::spec_iterator end = D->spec_end();             \
+  for (TMPLDECLKIND##TemplateDecl::spec_iterator it = D->spec_begin();       \
+       it != end; ++it) {                                                    \
+    TMPLDECLKIND##TemplateSpecializationDecl* SD = *it;                      \
+                                                                             \
+    switch (SD->getSpecializationKind()) {                                   \
+    /* Visit the implicit instantiations with the requested pattern. */      \
+    case TSK_Undeclared:                                                     \
+    case TSK_ImplicitInstantiation:                                          \
+      TRY_TO(TraverseDecl(SD));                                              \
+      break;                                                                 \
+                                                                             \
+    /* We don't need to do anything on an explicit instantiation             
+       or explicit specialization because there will be an explicit
+       node for it elsewhere. */                                             \
+    case TSK_ExplicitInstantiationDeclaration:                               \
+    case TSK_ExplicitInstantiationDefinition:                                \
+    case TSK_ExplicitSpecialization:                                         \
+      break;                                                                 \
+    }                                                                        \
+  }                                                                          \
+                                                                             \
+  return true;                                                               \
 }
-
-DEF_TRAVERSE_DECL(ClassTemplateDecl, {
-    CXXRecordDecl* TempDecl = D->getTemplatedDecl();
-    TRY_TO(TraverseDecl(TempDecl));
-    TRY_TO(TraverseTemplateParameterListHelper(D->getTemplateParameters()));
-
-    // By default, we do not traverse the instantiations of
-    // class templates since they do not appear in the user code. The
-    // following code optionally traverses them.
-    //
-    // We only traverse the class instantiations when we see the canonical
-    // declaration of the template, to ensure we only visit them once.
-    if (getDerived().shouldVisitTemplateInstantiations() &&
-        D == D->getCanonicalDecl())
-      TRY_TO(TraverseClassInstantiations(D));
-
-    // Note that getInstantiatedFromMemberTemplate() is just a link
-    // from a template instantiation back to the template from which
-    // it was instantiated, and thus should not be traversed.
-  })
+   
+DEF_TRAVERSE_TMPL_INST(Class)
+DEF_TRAVERSE_TMPL_INST(Var)
 
 // A helper method for traversing the instantiations of a
 // function while skipping its specializations.
 template<typename Derived>
-bool RecursiveASTVisitor<Derived>::TraverseFunctionInstantiations(
+bool RecursiveASTVisitor<Derived>::TraverseTemplateInstantiations(
     FunctionTemplateDecl *D) {
   FunctionTemplateDecl::spec_iterator end = D->spec_end();
   for (FunctionTemplateDecl::spec_iterator it = D->spec_begin(); it != end;
@@ -1500,20 +1523,31 @@ bool RecursiveASTVisitor<Derived>::TraverseFunctionInstantiations(
   return true;
 }
 
-DEF_TRAVERSE_DECL(FunctionTemplateDecl, {
-    TRY_TO(TraverseDecl(D->getTemplatedDecl()));
-    TRY_TO(TraverseTemplateParameterListHelper(D->getTemplateParameters()));
-
-    // By default, we do not traverse the instantiations of
-    // function templates since they do not appear in the user code. The
-    // following code optionally traverses them.
-    //
-    // We only traverse the function instantiations when we see the canonical
-    // declaration of the template, to ensure we only visit them once.
-    if (getDerived().shouldVisitTemplateInstantiations() &&
-        D == D->getCanonicalDecl())
-      TRY_TO(TraverseFunctionInstantiations(D));
-  })
+// This macro unifies the traversal of class, variable and function
+// template declarations.
+#define DEF_TRAVERSE_TMPL_DECL(TMPLDECLKIND)                                 \
+DEF_TRAVERSE_DECL(TMPLDECLKIND##TemplateDecl, {                              \
+    TRY_TO(TraverseDecl(D->getTemplatedDecl()));                             \
+    TRY_TO(TraverseTemplateParameterListHelper(D->getTemplateParameters())); \
+                                                                             \
+    /* By default, we do not traverse the instantiations of
+       class templates since they do not appear in the user code. The
+       following code optionally traverses them.
+       
+       We only traverse the class instantiations when we see the canonical
+       declaration of the template, to ensure we only visit them once. */    \
+    if (getDerived().shouldVisitTemplateInstantiations() &&                  \
+        D == D->getCanonicalDecl())                                          \
+      TRY_TO(TraverseTemplateInstantiations(D));                             \
+                                                                             \
+    /* Note that getInstantiatedFromMemberTemplate() is just a link
+       from a template instantiation back to the template from which
+       it was instantiated, and thus should not be traversed. */             \
+  })
+
+DEF_TRAVERSE_TMPL_DECL(Class)
+DEF_TRAVERSE_TMPL_DECL(Var)
+DEF_TRAVERSE_TMPL_DECL(Function)
 
 DEF_TRAVERSE_DECL(TemplateTemplateParmDecl, {
     // D is the "T" in something like
@@ -1607,26 +1641,30 @@ DEF_TRAVERSE_DECL(CXXRecordDecl, {
     TRY_TO(TraverseCXXRecordHelper(D));
   })
 
-DEF_TRAVERSE_DECL(ClassTemplateSpecializationDecl, {
-    // For implicit instantiations ("set<int> x;"), we don't want to
-    // recurse at all, since the instatiated class isn't written in
-    // the source code anywhere.  (Note the instatiated *type* --
-    // set<int> -- is written, and will still get a callback of
-    // TemplateSpecializationType).  For explicit instantiations
-    // ("template set<int>;"), we do need a callback, since this
-    // is the only callback that's made for this instantiation.
-    // We use getTypeAsWritten() to distinguish.
-    if (TypeSourceInfo *TSI = D->getTypeAsWritten())
-      TRY_TO(TraverseTypeLoc(TSI->getTypeLoc()));
-
-    if (!getDerived().shouldVisitTemplateInstantiations() &&
-        D->getTemplateSpecializationKind() != TSK_ExplicitSpecialization)
-      // Returning from here skips traversing the
-      // declaration context of the ClassTemplateSpecializationDecl
-      // (embedded in the DEF_TRAVERSE_DECL() macro)
-      // which contains the instantiated members of the class.
-      return true;
-  })
+#define DEF_TRAVERSE_TMPL_SPEC_DECL(TMPLDECLKIND) \
+DEF_TRAVERSE_DECL(TMPLDECLKIND##TemplateSpecializationDecl, {                \
+    /* For implicit instantiations ("set<int> x;"), we don't want to
+       recurse at all, since the instatiated template isn't written in
+       the source code anywhere.  (Note the instatiated *type* --
+       set<int> -- is written, and will still get a callback of
+       TemplateSpecializationType).  For explicit instantiations
+       ("template set<int>;"), we do need a callback, since this
+       is the only callback that's made for this instantiation.
+       We use getTypeAsWritten() to distinguish. */                          \
+    if (TypeSourceInfo *TSI = D->getTypeAsWritten())                         \
+      TRY_TO(TraverseTypeLoc(TSI->getTypeLoc()));                            \
+                                                                             \
+    if (!getDerived().shouldVisitTemplateInstantiations() &&                 \
+        D->getTemplateSpecializationKind() != TSK_ExplicitSpecialization)    \
+      /* Returning from here skips traversing the
+         declaration context of the *TemplateSpecializationDecl
+         (embedded in the DEF_TRAVERSE_DECL() macro)
+         which contains the instantiated members of the template. */         \
+      return true;                                                           \
+  })
+
+DEF_TRAVERSE_TMPL_SPEC_DECL(Class)
+DEF_TRAVERSE_TMPL_SPEC_DECL(Var)
 
 template <typename Derived>
 bool RecursiveASTVisitor<Derived>::TraverseTemplateArgumentLocsHelper(
@@ -1637,25 +1675,30 @@ bool RecursiveASTVisitor<Derived>::TraverseTemplateArgumentLocsHelper(
   return true;
 }
 
-DEF_TRAVERSE_DECL(ClassTemplatePartialSpecializationDecl, {
-    // The partial specialization.
-    if (TemplateParameterList *TPL = D->getTemplateParameters()) {
-      for (TemplateParameterList::iterator I = TPL->begin(), E = TPL->end();
-           I != E; ++I) {
-        TRY_TO(TraverseDecl(*I));
-      }
-    }
-    // The args that remains unspecialized.
-    TRY_TO(TraverseTemplateArgumentLocsHelper(
-        D->getTemplateArgsAsWritten(), D->getNumTemplateArgsAsWritten()));
-
-    // Don't need the ClassTemplatePartialSpecializationHelper, even
-    // though that's our parent class -- we already visit all the
-    // template args here.
-    TRY_TO(TraverseCXXRecordHelper(D));
-
-    // Instantiations will have been visited with the primary template.
-  })
+#define DEF_TRAVERSE_TMPL_PART_SPEC_DECL(TMPLDECLKIND, DECLKIND) \
+DEF_TRAVERSE_DECL(TMPLDECLKIND##TemplatePartialSpecializationDecl, {         \
+    /* The partial specialization. */                                        \
+    if (TemplateParameterList *TPL = D->getTemplateParameters()) {           \
+      for (TemplateParameterList::iterator I = TPL->begin(), E = TPL->end(); \
+           I != E; ++I) {                                                    \
+        TRY_TO(TraverseDecl(*I));                                            \
+      }                                                                      \
+    }                                                                        \
+    /* The args that remains unspecialized. */                               \
+    TRY_TO(TraverseTemplateArgumentLocsHelper(                               \
+                      D->getTemplateArgsAsWritten()->getTemplateArgs(),      \
+                      D->getTemplateArgsAsWritten()->NumTemplateArgs));      \
+                                                                             \
+    /* Don't need the *TemplatePartialSpecializationHelper, even
+       though that's our parent class -- we already visit all the
+       template args here. */                                                \
+    TRY_TO(Traverse##DECLKIND##Helper(D));                                   \
+                                                                             \
+    /* Instantiations will have been visited with the primary template. */   \
+  })
+
+DEF_TRAVERSE_TMPL_PART_SPEC_DECL(Class, CXXRecord)
+DEF_TRAVERSE_TMPL_PART_SPEC_DECL(Var, Var)
 
 DEF_TRAVERSE_DECL(EnumConstantDecl, {
     TRY_TO(TraverseStmt(D->getInitExpr()));
@@ -1736,6 +1779,14 @@ bool RecursiveASTVisitor<Derived>::TraverseFunctionHelper(FunctionDecl *D) {
   // including exception specifications.
   if (TypeSourceInfo *TSI = D->getTypeSourceInfo()) {
     TRY_TO(TraverseTypeLoc(TSI->getTypeLoc()));
+  } else if (getDerived().shouldVisitImplicitCode()) {
+    // Visit parameter variable declarations of the implicit function
+    // if the traverser is visiting implicit code. Parameter variable
+    // declarations do not have valid TypeSourceInfo, so to visit them
+    // we need to traverse the declarations explicitly.
+    for (FunctionDecl::param_const_iterator I = D->param_begin(),
+                                            E = D->param_end(); I != E; ++I)
+      TRY_TO(TraverseDecl(*I));
   }
 
   if (CXXConstructorDecl *Ctor = dyn_cast<CXXConstructorDecl>(D)) {
@@ -2117,10 +2168,12 @@ DEF_TRAVERSE_STMT(CXXTemporaryObjectExpr, {
 // Walk only the visible parts of lambda expressions.  
 template<typename Derived>
 bool RecursiveASTVisitor<Derived>::TraverseLambdaExpr(LambdaExpr *S) {
+  TRY_TO(WalkUpFromLambdaExpr(S));
+
   for (LambdaExpr::capture_iterator C = S->explicit_capture_begin(),
                                  CEnd = S->explicit_capture_end();
        C != CEnd; ++C) {
-    TRY_TO(TraverseLambdaCapture(*C));
+    TRY_TO(TraverseLambdaCapture(S, C));
   }
 
   if (S->hasExplicitParameters() || S->hasExplicitResultType()) {
@@ -2140,7 +2193,7 @@ bool RecursiveASTVisitor<Derived>::TraverseLambdaExpr(LambdaExpr *S) {
     }
   }
 
-  TRY_TO(TraverseStmt(S->getBody()));
+  TRY_TO(TraverseLambdaBody(S));
   return true;
 }
 
@@ -2174,6 +2227,7 @@ DEF_TRAVERSE_STMT(CXXDefaultInitExpr, { })
 DEF_TRAVERSE_STMT(CXXDeleteExpr, { })
 DEF_TRAVERSE_STMT(ExprWithCleanups, { })
 DEF_TRAVERSE_STMT(CXXNullPtrLiteralExpr, { })
+DEF_TRAVERSE_STMT(CXXStdInitializerListExpr, { })
 DEF_TRAVERSE_STMT(CXXPseudoDestructorExpr, {
   TRY_TO(TraverseNestedNameSpecifierLoc(S->getQualifierLoc()));
   if (TypeSourceInfo *ScopeInfo = S->getScopeTypeInfo())
@@ -2211,6 +2265,7 @@ DEF_TRAVERSE_STMT(ParenExpr, { })
 DEF_TRAVERSE_STMT(ParenListExpr, { })
 DEF_TRAVERSE_STMT(PredefinedExpr, { })
 DEF_TRAVERSE_STMT(ShuffleVectorExpr, { })
+DEF_TRAVERSE_STMT(ConvertVectorExpr, { })
 DEF_TRAVERSE_STMT(StmtExpr, { })
 DEF_TRAVERSE_STMT(UnresolvedLookupExpr, {
   TRY_TO(TraverseNestedNameSpecifierLoc(S->getQualifierLoc()));
@@ -2269,6 +2324,61 @@ DEF_TRAVERSE_STMT(ObjCDictionaryLiteral, { })
 // Traverse OpenCL: AsType, Convert.
 DEF_TRAVERSE_STMT(AsTypeExpr, { })
 
+// OpenMP directives.
+DEF_TRAVERSE_STMT(OMPParallelDirective, {
+  ArrayRef<OMPClause *> Clauses = S->clauses();
+  for (ArrayRef<OMPClause *>::iterator I = Clauses.begin(), E = Clauses.end();
+       I != E; ++I)
+    if (!TraverseOMPClause(*I)) return false;
+})
+
+// OpenMP clauses.
+template<typename Derived>
+bool RecursiveASTVisitor<Derived>::TraverseOMPClause(OMPClause *C) {
+  if (!C) return true;
+  switch (C->getClauseKind()) {
+#define OPENMP_CLAUSE(Name, Class)                                      \
+  case OMPC_##Name:                                                     \
+    return getDerived().Visit##Class(static_cast<Class*>(C));
+#include "clang/Basic/OpenMPKinds.def"
+  default: break;
+  }
+  return true;
+}
+
+template<typename Derived>
+bool RecursiveASTVisitor<Derived>::VisitOMPDefaultClause(OMPDefaultClause *C) {
+  return true;
+}
+
+template<typename Derived>
+template<typename T>
+void RecursiveASTVisitor<Derived>::VisitOMPClauseList(T *Node) {
+  for (typename T::varlist_iterator I = Node->varlist_begin(),
+                                    E = Node->varlist_end();
+         I != E; ++I)
+    TraverseStmt(*I);
+}
+
+template<typename Derived>
+bool RecursiveASTVisitor<Derived>::VisitOMPPrivateClause(OMPPrivateClause *C) {
+  VisitOMPClauseList(C);
+  return true;
+}
+
+template<typename Derived>
+bool RecursiveASTVisitor<Derived>::VisitOMPFirstprivateClause(
+                                                    OMPFirstprivateClause *C) {
+  VisitOMPClauseList(C);
+  return true;
+}
+
+template<typename Derived>
+bool RecursiveASTVisitor<Derived>::VisitOMPSharedClause(OMPSharedClause *C) {
+  VisitOMPClauseList(C);
+  return true;
+}
+
 // FIXME: look at the following tricky-seeming exprs to see if we
 // need to recurse on anything.  These are ones that have methods
 // returning decls or qualtypes or nestednamespecifier -- though I'm
diff --git a/include/clang/AST/Redeclarable.h b/include/clang/AST/Redeclarable.h
index e3b340a5a1fe..cfe5a90be0d5 100644
--- a/include/clang/AST/Redeclarable.h
+++ b/include/clang/AST/Redeclarable.h
@@ -75,7 +75,7 @@ public:
 
   /// \brief Return the first declaration of this declaration or itself if this
   /// is the only declaration.
-  decl_type *getFirstDeclaration() {
+  decl_type *getFirstDecl() {
     decl_type *D = static_cast<decl_type*>(this);
     while (D->getPreviousDecl())
       D = D->getPreviousDecl();
@@ -84,31 +84,29 @@ public:
 
   /// \brief Return the first declaration of this declaration or itself if this
   /// is the only declaration.
-  const decl_type *getFirstDeclaration() const {
+  const decl_type *getFirstDecl() const {
     const decl_type *D = static_cast<const decl_type*>(this);
     while (D->getPreviousDecl())
       D = D->getPreviousDecl();
     return D;
   }
 
-  /// \brief Returns true if this is the first declaration.
-  bool isFirstDeclaration() const {
-    return RedeclLink.NextIsLatest();
-  }
+  /// \brief True if this is the first declaration in its redeclaration chain.
+  bool isFirstDecl() const { return RedeclLink.NextIsLatest(); }
 
   /// \brief Returns the most recent (re)declaration of this declaration.
   decl_type *getMostRecentDecl() {
-    return getFirstDeclaration()->RedeclLink.getNext();
+    return getFirstDecl()->RedeclLink.getNext();
   }
 
   /// \brief Returns the most recent (re)declaration of this declaration.
   const decl_type *getMostRecentDecl() const {
-    return getFirstDeclaration()->RedeclLink.getNext();
+    return getFirstDecl()->RedeclLink.getNext();
   }
   
   /// \brief Set the previous declaration. If PrevDecl is NULL, set this as the
   /// first and only declaration.
-  void setPreviousDeclaration(decl_type *PrevDecl);
+  void setPreviousDecl(decl_type *PrevDecl);
 
   /// \brief Iterates through all the redeclarations of the same decl.
   class redecl_iterator {
@@ -134,7 +132,7 @@ public:
     redecl_iterator& operator++() {
       assert(Current && "Advancing while iterator has reached end");
       // Sanity check to avoid infinite loop on invalid redecl chain.
-      if (Current->isFirstDeclaration()) {
+      if (Current->isFirstDecl()) {
         if (PassedFirst) {
           assert(0 && "Passed first decl twice, invalid redecl chain!");
           Current = 0;
@@ -175,6 +173,40 @@ public:
   friend class ASTDeclWriter;
 };
 
+/// \brief Get the primary declaration for a declaration from an AST file. That
+/// will be the first-loaded declaration.
+Decl *getPrimaryMergedDecl(Decl *D);
+
+/// \brief Provides common interface for the Decls that cannot be redeclared,
+/// but can be merged if the same declaration is brought in from multiple
+/// modules.
+template<typename decl_type>
+class Mergeable {
+public:
+  Mergeable() {}
+
+  /// \brief Return the first declaration of this declaration or itself if this
+  /// is the only declaration.
+  decl_type *getFirstDecl() {
+    decl_type *D = static_cast<decl_type*>(this);
+    if (!D->isFromASTFile())
+      return D;
+    return cast<decl_type>(getPrimaryMergedDecl(const_cast<decl_type*>(D)));
+  }
+
+  /// \brief Return the first declaration of this declaration or itself if this
+  /// is the only declaration.
+  const decl_type *getFirstDecl() const {
+    const decl_type *D = static_cast<const decl_type*>(this);
+    if (!D->isFromASTFile())
+      return D;
+    return cast<decl_type>(getPrimaryMergedDecl(const_cast<decl_type*>(D)));
+  }
+
+  /// \brief Returns true if this is the first declaration.
+  bool isFirstDecl() const { return getFirstDecl() == this; }
+};
+
 }
 
 #endif
diff --git a/include/clang/AST/Stmt.h b/include/clang/AST/Stmt.h
index 74c9ec205363..ace53d83b3cf 100644
--- a/include/clang/AST/Stmt.h
+++ b/include/clang/AST/Stmt.h
@@ -266,10 +266,6 @@ protected:
     /// Whether this initializer list originally had a GNU array-range
     /// designator in it. This is a temporary marker used by CodeGen.
     unsigned HadArrayRangeDesignator : 1;
-
-    /// Whether this initializer list initializes a std::initializer_list
-    /// object.
-    unsigned InitializesStdInitializerList : 1;
   };
 
   class TypeTraitExprBitfields {
@@ -289,7 +285,7 @@ protected:
     /// \brief The number of arguments to this type trait.
     unsigned NumArgs : 32 - 8 - 1 - NumExprBits;
   };
-  
+
   union {
     // FIXME: this is wasteful on 64-bit platforms.
     void *Aligner;
@@ -316,19 +312,21 @@ protected:
 public:
   // Only allow allocation of Stmts using the allocator in ASTContext
   // or by doing a placement new.
-  void* operator new(size_t bytes, ASTContext& C,
-                     unsigned alignment = 8) throw();
+  void* operator new(size_t bytes, const ASTContext& C,
+                     unsigned alignment = 8);
 
-  void* operator new(size_t bytes, ASTContext* C,
-                     unsigned alignment = 8) throw();
+  void* operator new(size_t bytes, const ASTContext* C,
+                     unsigned alignment = 8) {
+    return operator new(bytes, *C, alignment);
+  }
 
   void* operator new(size_t bytes, void* mem) throw() {
     return mem;
   }
 
-  void operator delete(void*, ASTContext&, unsigned) throw() { }
-  void operator delete(void*, ASTContext*, unsigned) throw() { }
-  void operator delete(void*, std::size_t) throw() { }
+  void operator delete(void*, const ASTContext&, unsigned) throw() { }
+  void operator delete(void*, const ASTContext*, unsigned) throw() { }
+  void operator delete(void*, size_t) throw() { }
   void operator delete(void*, void*) throw() { }
 
 public:
@@ -382,7 +380,7 @@ public:
 
   /// dumpPretty/printPretty - These two methods do a "pretty print" of the AST
   /// back to its original source language syntax.
-  void dumpPretty(ASTContext &Context) const;
+  void dumpPretty(const ASTContext &Context) const;
   void printPretty(raw_ostream &OS, PrinterHelper *Helper,
                    const PrintingPolicy &Policy,
                    unsigned Indentation = 0) const;
@@ -401,13 +399,6 @@ public:
       const_cast<const Stmt*>(this)->stripLabelLikeStatements());
   }
 
-  /// hasImplicitControlFlow - Some statements (e.g. short circuited operations)
-  ///  contain implicit control-flow in the order their subexpressions
-  ///  are evaluated.  This predicate returns true if this statement has
-  ///  such implicit control-flow.  Such statements are also specially handled
-  ///  within CFGs.
-  bool hasImplicitControlFlow() const;
-
   /// Child Iterators: All subclasses must implement 'children'
   /// to permit easy iteration over the substatements/subexpessions of an
   /// AST node.  This permits easy iteration over all nodes in the AST.
@@ -553,10 +544,10 @@ class CompoundStmt : public Stmt {
   Stmt** Body;
   SourceLocation LBracLoc, RBracLoc;
 public:
-  CompoundStmt(ASTContext &C, ArrayRef<Stmt*> Stmts,
+  CompoundStmt(const ASTContext &C, ArrayRef<Stmt*> Stmts,
                SourceLocation LB, SourceLocation RB);
 
-  // \brief Build an empty compound statment with a location.
+  // \brief Build an empty compound statement with a location.
   explicit CompoundStmt(SourceLocation Loc)
     : Stmt(CompoundStmtClass), Body(0), LBracLoc(Loc), RBracLoc(Loc) {
     CompoundStmtBits.NumStmts = 0;
@@ -568,7 +559,7 @@ public:
     CompoundStmtBits.NumStmts = 0;
   }
 
-  void setStmts(ASTContext &C, Stmt **Stmts, unsigned NumStmts);
+  void setStmts(const ASTContext &C, Stmt **Stmts, unsigned NumStmts);
 
   bool body_empty() const { return CompoundStmtBits.NumStmts == 0; }
   unsigned size() const { return CompoundStmtBits.NumStmts; }
@@ -827,10 +818,10 @@ class AttributedStmt : public Stmt {
   }
 
 public:
-  static AttributedStmt *Create(ASTContext &C, SourceLocation Loc,
+  static AttributedStmt *Create(const ASTContext &C, SourceLocation Loc,
                                 ArrayRef<const Attr*> Attrs, Stmt *SubStmt);
   // \brief Build an empty attributed statement.
-  static AttributedStmt *CreateEmpty(ASTContext &C, unsigned NumAttrs);
+  static AttributedStmt *CreateEmpty(const ASTContext &C, unsigned NumAttrs);
 
   SourceLocation getAttrLoc() const { return AttrLoc; }
   ArrayRef<const Attr*> getAttrs() const {
@@ -860,7 +851,7 @@ class IfStmt : public Stmt {
   SourceLocation ElseLoc;
 
 public:
-  IfStmt(ASTContext &C, SourceLocation IL, VarDecl *var, Expr *cond,
+  IfStmt(const ASTContext &C, SourceLocation IL, VarDecl *var, Expr *cond,
          Stmt *then, SourceLocation EL = SourceLocation(), Stmt *elsev = 0);
 
   /// \brief Build an empty if/then/else statement
@@ -875,7 +866,7 @@ public:
   /// }
   /// \endcode
   VarDecl *getConditionVariable() const;
-  void setConditionVariable(ASTContext &C, VarDecl *V);
+  void setConditionVariable(const ASTContext &C, VarDecl *V);
 
   /// If this IfStmt has a condition variable, return the faux DeclStmt
   /// associated with the creation of that condition variable.
@@ -933,7 +924,7 @@ class SwitchStmt : public Stmt {
   unsigned AllEnumCasesCovered : 1;
 
 public:
-  SwitchStmt(ASTContext &C, VarDecl *Var, Expr *cond);
+  SwitchStmt(const ASTContext &C, VarDecl *Var, Expr *cond);
 
   /// \brief Build a empty switch statement.
   explicit SwitchStmt(EmptyShell Empty) : Stmt(SwitchStmtClass, Empty) { }
@@ -948,7 +939,7 @@ public:
   /// }
   /// \endcode
   VarDecl *getConditionVariable() const;
-  void setConditionVariable(ASTContext &C, VarDecl *V);
+  void setConditionVariable(const ASTContext &C, VarDecl *V);
 
   /// If this SwitchStmt has a condition variable, return the faux DeclStmt
   /// associated with the creation of that condition variable.
@@ -967,9 +958,6 @@ public:
   SwitchCase *getSwitchCaseList() { return FirstCase; }
 
   /// \brief Set the case list for this switch statement.
-  ///
-  /// The caller is responsible for incrementing the retain counts on
-  /// all of the SwitchCase statements in this list.
   void setSwitchCaseList(SwitchCase *SC) { FirstCase = SC; }
 
   SourceLocation getSwitchLoc() const { return SwitchLoc; }
@@ -1021,7 +1009,7 @@ class WhileStmt : public Stmt {
   Stmt* SubExprs[END_EXPR];
   SourceLocation WhileLoc;
 public:
-  WhileStmt(ASTContext &C, VarDecl *Var, Expr *cond, Stmt *body,
+  WhileStmt(const ASTContext &C, VarDecl *Var, Expr *cond, Stmt *body,
             SourceLocation WL);
 
   /// \brief Build an empty while statement.
@@ -1036,7 +1024,7 @@ public:
   /// }
   /// \endcode
   VarDecl *getConditionVariable() const;
-  void setConditionVariable(ASTContext &C, VarDecl *V);
+  void setConditionVariable(const ASTContext &C, VarDecl *V);
 
   /// If this WhileStmt has a condition variable, return the faux DeclStmt
   /// associated with the creation of that condition variable.
@@ -1129,8 +1117,9 @@ class ForStmt : public Stmt {
   SourceLocation LParenLoc, RParenLoc;
 
 public:
-  ForStmt(ASTContext &C, Stmt *Init, Expr *Cond, VarDecl *condVar, Expr *Inc,
-          Stmt *Body, SourceLocation FL, SourceLocation LP, SourceLocation RP);
+  ForStmt(const ASTContext &C, Stmt *Init, Expr *Cond, VarDecl *condVar,
+          Expr *Inc, Stmt *Body, SourceLocation FL, SourceLocation LP,
+          SourceLocation RP);
 
   /// \brief Build an empty for statement.
   explicit ForStmt(EmptyShell Empty) : Stmt(ForStmtClass, Empty) { }
@@ -1146,7 +1135,7 @@ public:
   /// }
   /// \endcode
   VarDecl *getConditionVariable() const;
-  void setConditionVariable(ASTContext &C, VarDecl *V);
+  void setConditionVariable(const ASTContext &C, VarDecl *V);
 
   /// If this ForStmt has a condition variable, return the faux DeclStmt
   /// associated with the creation of that condition variable.
@@ -1417,7 +1406,7 @@ public:
   //===--- Asm String Analysis ---===//
 
   /// Assemble final IR asm string.
-  std::string generateAsmString(ASTContext &C) const;
+  std::string generateAsmString(const ASTContext &C) const;
 
   //===--- Output operands ---===//
 
@@ -1520,7 +1509,7 @@ class GCCAsmStmt : public AsmStmt {
   friend class ASTStmtReader;
 
 public:
-  GCCAsmStmt(ASTContext &C, SourceLocation asmloc, bool issimple,
+  GCCAsmStmt(const ASTContext &C, SourceLocation asmloc, bool issimple,
              bool isvolatile, unsigned numoutputs, unsigned numinputs,
              IdentifierInfo **names, StringLiteral **constraints, Expr **exprs,
              StringLiteral *asmstr, unsigned numclobbers,
@@ -1586,10 +1575,10 @@ public:
   /// translation of strings from GCC syntax to LLVM IR syntax, and handles
   //// flattening of named references like %[foo] to Operand AsmStringPiece's.
   unsigned AnalyzeAsmString(SmallVectorImpl<AsmStringPiece> &Pieces,
-                            ASTContext &C, unsigned &DiagOffs) const;
+                            const ASTContext &C, unsigned &DiagOffs) const;
 
   /// Assemble final IR asm string.
-  std::string generateAsmString(ASTContext &C) const;
+  std::string generateAsmString(const ASTContext &C) const;
 
   //===--- Output operands ---===//
 
@@ -1649,7 +1638,7 @@ public:
   }
 
 private:
-  void setOutputsAndInputsAndClobbers(ASTContext &C,
+  void setOutputsAndInputsAndClobbers(const ASTContext &C,
                                       IdentifierInfo **Names,
                                       StringLiteral **Constraints,
                                       Stmt **Exprs,
@@ -1695,9 +1684,9 @@ class MSAsmStmt : public AsmStmt {
   friend class ASTStmtReader;
 
 public:
-  MSAsmStmt(ASTContext &C, SourceLocation asmloc, SourceLocation lbraceloc,
-            bool issimple, bool isvolatile, ArrayRef<Token> asmtoks,
-            unsigned numoutputs, unsigned numinputs,
+  MSAsmStmt(const ASTContext &C, SourceLocation asmloc,
+            SourceLocation lbraceloc, bool issimple, bool isvolatile,
+            ArrayRef<Token> asmtoks, unsigned numoutputs, unsigned numinputs,
             ArrayRef<StringRef> constraints,
             ArrayRef<Expr*> exprs, StringRef asmstr,
             ArrayRef<StringRef> clobbers, SourceLocation endloc);
@@ -1720,7 +1709,7 @@ public:
   StringRef getAsmString() const { return AsmStr; }
 
   /// Assemble final IR asm string.
-  std::string generateAsmString(ASTContext &C) const;
+  std::string generateAsmString(const ASTContext &C) const;
 
   //===--- Output operands ---===//
 
@@ -1765,12 +1754,9 @@ public:
   StringRef getClobber(unsigned i) const { return getClobbers()[i]; }
 
 private:
-  void initialize(ASTContext &C,
-                  StringRef AsmString,
-                  ArrayRef<Token> AsmToks,
-                  ArrayRef<StringRef> Constraints,
-                  ArrayRef<Expr*> Exprs,
-                  ArrayRef<StringRef> Clobbers);
+  void initialize(const ASTContext &C, StringRef AsmString,
+                  ArrayRef<Token> AsmToks, ArrayRef<StringRef> Constraints,
+                  ArrayRef<Expr*> Exprs, ArrayRef<StringRef> Clobbers);
 public:
 
   SourceLocation getLocStart() const LLVM_READONLY { return AsmLoc; }
@@ -1800,7 +1786,7 @@ class SEHExceptStmt : public Stmt {
   explicit SEHExceptStmt(EmptyShell E) : Stmt(SEHExceptStmtClass, E) { }
 
 public:
-  static SEHExceptStmt* Create(ASTContext &C,
+  static SEHExceptStmt* Create(const ASTContext &C,
                                SourceLocation ExceptLoc,
                                Expr *FilterExpr,
                                Stmt *Block);
@@ -1841,7 +1827,7 @@ class SEHFinallyStmt : public Stmt {
   explicit SEHFinallyStmt(EmptyShell E) : Stmt(SEHFinallyStmtClass, E) { }
 
 public:
-  static SEHFinallyStmt* Create(ASTContext &C,
+  static SEHFinallyStmt* Create(const ASTContext &C,
                                 SourceLocation FinallyLoc,
                                 Stmt *Block);
 
@@ -1880,10 +1866,8 @@ class SEHTryStmt : public Stmt {
   explicit SEHTryStmt(EmptyShell E) : Stmt(SEHTryStmtClass, E) { }
 
 public:
-  static SEHTryStmt* Create(ASTContext &C,
-                            bool isCXXTry,
-                            SourceLocation TryLoc,
-                            Stmt *TryBlock,
+  static SEHTryStmt* Create(const ASTContext &C, bool isCXXTry,
+                            SourceLocation TryLoc, Stmt *TryBlock,
                             Stmt *Handler);
 
   SourceLocation getLocStart() const LLVM_READONLY { return getTryLoc(); }
@@ -2006,13 +1990,13 @@ private:
   void setCapturedStmt(Stmt *S) { getStoredStmts()[NumCaptures] = S; }
 
 public:
-  static CapturedStmt *Create(ASTContext &Context, Stmt *S,
+  static CapturedStmt *Create(const ASTContext &Context, Stmt *S,
                               CapturedRegionKind Kind,
                               ArrayRef<Capture> Captures,
                               ArrayRef<Expr *> CaptureInits,
                               CapturedDecl *CD, RecordDecl *RD);
 
-  static CapturedStmt *CreateDeserialized(ASTContext &Context,
+  static CapturedStmt *CreateDeserialized(const ASTContext &Context,
                                           unsigned NumCaptures);
 
   /// \brief Retrieve the statement being captured.
diff --git a/include/clang/AST/StmtCXX.h b/include/clang/AST/StmtCXX.h
index 0112befb293f..df98d41ad5fb 100644
--- a/include/clang/AST/StmtCXX.h
+++ b/include/clang/AST/StmtCXX.h
@@ -79,10 +79,10 @@ class CXXTryStmt : public Stmt {
   }
 
 public:
-  static CXXTryStmt *Create(ASTContext &C, SourceLocation tryLoc,
+  static CXXTryStmt *Create(const ASTContext &C, SourceLocation tryLoc,
                             Stmt *tryBlock, ArrayRef<Stmt*> handlers);
 
-  static CXXTryStmt *Create(ASTContext &C, EmptyShell Empty,
+  static CXXTryStmt *Create(const ASTContext &C, EmptyShell Empty,
                             unsigned numHandlers);
 
   SourceLocation getLocStart() const LLVM_READONLY { return getTryLoc(); }
diff --git a/include/clang/AST/StmtIterator.h b/include/clang/AST/StmtIterator.h
index b933ed076260..fbc8e5d4ea71 100644
--- a/include/clang/AST/StmtIterator.h
+++ b/include/clang/AST/StmtIterator.h
@@ -15,6 +15,7 @@
 #define LLVM_CLANG_AST_STMT_ITR_H
 
 #include "llvm/Support/DataTypes.h"
+#include "llvm/Support/Compiler.h"
 #include <cassert>
 #include <cstddef>
 #include <iterator>
@@ -28,18 +29,14 @@ class VariableArrayType;
 
 class StmtIteratorBase {
 protected:
-  enum { DeclMode = 0x1, SizeOfTypeVAMode = 0x2, DeclGroupMode = 0x3,
+  enum { StmtMode = 0x0, SizeOfTypeVAMode = 0x1, DeclGroupMode = 0x2,
          Flags = 0x3 };
   
   Stmt **stmt;
-  union { Decl *decl; Decl **DGI; };
+  Decl **DGI;
   uintptr_t RawVAPtr;
   Decl **DGE;
   
-  bool inDecl() const {
-    return (RawVAPtr & Flags) == DeclMode;
-  }
-
   bool inDeclGroup() const {
     return (RawVAPtr & Flags) == DeclGroupMode;
   }
@@ -49,7 +46,7 @@ protected:
   }
 
   bool inStmt() const {
-    return (RawVAPtr & Flags) == 0;
+    return (RawVAPtr & Flags) == StmtMode;
   }
 
   const VariableArrayType *getVAPtr() const {
@@ -57,7 +54,7 @@ protected:
   }
 
   void setVAPtr(const VariableArrayType *P) {
-    assert (inDecl() || inDeclGroup() || inSizeOfTypeVA());
+    assert (inDeclGroup() || inSizeOfTypeVA());
     RawVAPtr = reinterpret_cast<uintptr_t>(P) | (RawVAPtr & Flags);
   }
 
@@ -67,11 +64,10 @@ protected:
 
   Stmt*& GetDeclExpr() const;
 
-  StmtIteratorBase(Stmt **s) : stmt(s), decl(0), RawVAPtr(0) {}
-  StmtIteratorBase(Decl *d, Stmt **s);
+  StmtIteratorBase(Stmt **s) : stmt(s), DGI(0), RawVAPtr(0) {}
   StmtIteratorBase(const VariableArrayType *t);
   StmtIteratorBase(Decl **dgi, Decl **dge);
-  StmtIteratorBase() : stmt(0), decl(0), RawVAPtr(0) {}
+  StmtIteratorBase() : stmt(0), DGI(0), RawVAPtr(0) {}
 };
 
 
@@ -86,7 +82,6 @@ public:
   StmtIteratorImpl() {}
   StmtIteratorImpl(Stmt **s) : StmtIteratorBase(s) {}
   StmtIteratorImpl(Decl **dgi, Decl **dge) : StmtIteratorBase(dgi, dge) {}
-  StmtIteratorImpl(Decl *d, Stmt **s) : StmtIteratorBase(d, s) {}
   StmtIteratorImpl(const VariableArrayType *t) : StmtIteratorBase(t) {}
 
   DERIVED& operator++() {
@@ -107,15 +102,15 @@ public:
   }
 
   bool operator==(const DERIVED& RHS) const {
-    return stmt == RHS.stmt && decl == RHS.decl && RawVAPtr == RHS.RawVAPtr;
+    return stmt == RHS.stmt && DGI == RHS.DGI && RawVAPtr == RHS.RawVAPtr;
   }
 
   bool operator!=(const DERIVED& RHS) const {
-    return stmt != RHS.stmt || decl != RHS.decl || RawVAPtr != RHS.RawVAPtr;
+    return stmt != RHS.stmt || DGI != RHS.DGI || RawVAPtr != RHS.RawVAPtr;
   }
 
   REFERENCE operator*() const {
-    return (REFERENCE) (inStmt() ? *stmt : GetDeclExpr());
+    return inStmt() ? *stmt : GetDeclExpr();
   }
 
   REFERENCE operator->() const { return operator*(); }
@@ -131,9 +126,6 @@ struct StmtIterator : public StmtIteratorImpl<StmtIterator,Stmt*&> {
 
   StmtIterator(const VariableArrayType *t)
     : StmtIteratorImpl<StmtIterator,Stmt*&>(t) {}
-
-  StmtIterator(Decl* D, Stmt **s = 0)
-    : StmtIteratorImpl<StmtIterator,Stmt*&>(D, s) {}
 };
 
 struct ConstStmtIterator : public StmtIteratorImpl<ConstStmtIterator,
@@ -156,7 +148,7 @@ struct StmtRange : std::pair<StmtIterator,StmtIterator> {
     : std::pair<StmtIterator,StmtIterator>(begin, end) {}
 
   bool empty() const { return first == second; }
-  operator bool() const { return !empty(); }
+  LLVM_EXPLICIT operator bool() const { return !empty(); }
 
   Stmt *operator->() const { return first.operator->(); }
   Stmt *&operator*() const { return first.operator*(); }
@@ -199,7 +191,7 @@ struct ConstStmtRange : std::pair<ConstStmtIterator,ConstStmtIterator> {
     : std::pair<ConstStmtIterator,ConstStmtIterator>(begin, end) {}
 
   bool empty() const { return first == second; }
-  operator bool() const { return !empty(); }
+  LLVM_EXPLICIT operator bool() const { return !empty(); }
 
   const Stmt *operator->() const { return first.operator->(); }
   const Stmt *operator*() const { return first.operator*(); }
diff --git a/include/clang/AST/StmtObjC.h b/include/clang/AST/StmtObjC.h
index e97c1a5a319f..bfb4a9b0bb7a 100644
--- a/include/clang/AST/StmtObjC.h
+++ b/include/clang/AST/StmtObjC.h
@@ -181,13 +181,12 @@ private:
       HasFinally(HasFinally) { }
 
 public:
-  static ObjCAtTryStmt *Create(ASTContext &Context, SourceLocation atTryLoc, 
-                               Stmt *atTryStmt,
+  static ObjCAtTryStmt *Create(const ASTContext &Context,
+                               SourceLocation atTryLoc, Stmt *atTryStmt,
                                Stmt **CatchStmts, unsigned NumCatchStmts,
                                Stmt *atFinallyStmt);
-  static ObjCAtTryStmt *CreateEmpty(ASTContext &Context, 
-                                    unsigned NumCatchStmts,
-                                    bool HasFinally);
+  static ObjCAtTryStmt *CreateEmpty(const ASTContext &Context,
+                                    unsigned NumCatchStmts, bool HasFinally);
   
   /// \brief Retrieve the location of the @ in the \@try.
   SourceLocation getAtTryLoc() const { return AtTryLoc; }
diff --git a/include/clang/AST/StmtOpenMP.h b/include/clang/AST/StmtOpenMP.h
new file mode 100644
index 000000000000..8570d8850a2f
--- /dev/null
+++ b/include/clang/AST/StmtOpenMP.h
@@ -0,0 +1,528 @@
+//===- StmtOpenMP.h - Classes for OpenMP directives and clauses --*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+/// \file
+/// \brief This file defines OpenMP AST classes for executable directives and
+/// clauses.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_AST_STMTOPENMP_H
+#define LLVM_CLANG_AST_STMTOPENMP_H
+
+#include "clang/Basic/OpenMPKinds.h"
+#include "clang/Basic/SourceLocation.h"
+#include "clang/AST/Expr.h"
+#include "clang/AST/Stmt.h"
+
+namespace clang {
+
+//===----------------------------------------------------------------------===//
+// AST classes for clauses.
+//===----------------------------------------------------------------------===//
+
+/// \brief This is a basic class for representing single OpenMP clause.
+///
+class OMPClause {
+  /// \brief Starting location of the clause (the clause keyword).
+  SourceLocation StartLoc;
+  /// \brief Ending location of the clause.
+  SourceLocation EndLoc;
+  /// \brief Kind of the clause.
+  OpenMPClauseKind Kind;
+protected:
+  OMPClause(OpenMPClauseKind K, SourceLocation StartLoc, SourceLocation EndLoc)
+    : StartLoc(StartLoc), EndLoc(EndLoc), Kind(K) {}
+
+public:
+
+  /// \brief Returns the starting location of the clause.
+  SourceLocation getLocStart() const { return StartLoc; }
+  /// \brief Returns the ending location of the clause.
+  SourceLocation getLocEnd() const { return EndLoc; }
+
+  /// \brief Sets the starting location of the clause.
+  void setLocStart(SourceLocation Loc) { StartLoc = Loc; }
+  /// \brief Sets the ending location of the clause.
+  void setLocEnd(SourceLocation Loc) { EndLoc = Loc; }
+
+  /// \brief Returns kind of OpenMP clause (private, shared, reduction, etc.).
+  OpenMPClauseKind getClauseKind() const { return Kind; }
+
+  bool isImplicit() const { return StartLoc.isInvalid();}
+
+  StmtRange children();
+  ConstStmtRange children() const {
+    return const_cast<OMPClause *>(this)->children();
+  }
+  static bool classof(const OMPClause *T) {
+    return true;
+  }
+};
+
+/// \brief This represents clauses with the list of variables like 'private',
+/// 'firstprivate', 'copyin', 'shared', or 'reduction' clauses in the
+/// '#pragma omp ...' directives.
+template <class T>
+class OMPVarList {
+  friend class OMPClauseReader;
+  /// \brief Location of '('.
+  SourceLocation LParenLoc;
+  /// \brief Number of variables in the list.
+  unsigned NumVars;
+protected:
+  /// \brief Fetches list of variables associated with this clause.
+  llvm::MutableArrayRef<Expr *> getVarRefs() {
+    return llvm::MutableArrayRef<Expr *>(
+                         reinterpret_cast<Expr **>(static_cast<T *>(this) + 1),
+                         NumVars);
+  }
+
+  /// \brief Sets the list of variables for this clause.
+  void setVarRefs(ArrayRef<Expr *> VL) {
+    assert(VL.size() == NumVars &&
+           "Number of variables is not the same as the preallocated buffer");
+    std::copy(VL.begin(), VL.end(),
+              reinterpret_cast<Expr **>(static_cast<T *>(this) + 1));
+  }
+
+  /// \brief Build clause with number of variables \a N.
+  ///
+  /// \param N Number of the variables in the clause.
+  ///
+  OMPVarList(SourceLocation LParenLoc, unsigned N)
+    : LParenLoc(LParenLoc), NumVars(N) { }
+public:
+  typedef llvm::MutableArrayRef<Expr *>::iterator varlist_iterator;
+  typedef ArrayRef<const Expr *>::iterator varlist_const_iterator;
+
+  unsigned varlist_size() const { return NumVars; }
+  bool varlist_empty() const { return NumVars == 0; }
+  varlist_iterator varlist_begin() { return getVarRefs().begin(); }
+  varlist_iterator varlist_end() { return getVarRefs().end(); }
+  varlist_const_iterator varlist_begin() const { return getVarRefs().begin(); }
+  varlist_const_iterator varlist_end() const { return getVarRefs().end(); }
+
+  /// \brief Sets the location of '('.
+  void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; }
+  /// \brief Returns the location of '('.
+  SourceLocation getLParenLoc() const { return LParenLoc; }
+
+  /// \brief Fetches list of all variables in the clause.
+  ArrayRef<const Expr *> getVarRefs() const {
+    return ArrayRef<const Expr *>(
+       reinterpret_cast<const Expr *const *>(static_cast<const T *>(this) + 1),
+       NumVars);
+  }
+};
+
+/// \brief This represents 'default' clause in the '#pragma omp ...' directive.
+///
+/// \code
+/// #pragma omp parallel default(shared)
+/// \endcode
+/// In this example directive '#pragma omp parallel' has simple 'default'
+/// clause with kind 'shared'.
+///
+class OMPDefaultClause : public OMPClause {
+  friend class OMPClauseReader;
+  /// \brief Location of '('.
+  SourceLocation LParenLoc;
+  /// \brief A kind of the 'default' clause.
+  OpenMPDefaultClauseKind Kind;
+  /// \brief Start location of the kind in source code.
+  SourceLocation KindKwLoc;
+
+  /// \brief Set kind of the clauses.
+  ///
+  /// \param K Argument of clause.
+  ///
+  void setDefaultKind(OpenMPDefaultClauseKind K) { Kind = K; }
+
+  /// \brief Set argument location.
+  ///
+  /// \param KLoc Argument location.
+  ///
+  void setDefaultKindKwLoc(SourceLocation KLoc) { KindKwLoc = KLoc; }
+public:
+  /// \brief Build 'default' clause with argument \a A ('none' or 'shared').
+  ///
+  /// \param A Argument of the clause ('none' or 'shared').
+  /// \param ALoc Starting location of the argument.
+  /// \param StartLoc Starting location of the clause.
+  /// \param LParenLoc Location of '('.
+  /// \param EndLoc Ending location of the clause.
+  ///
+  OMPDefaultClause(OpenMPDefaultClauseKind A, SourceLocation ALoc,
+                   SourceLocation StartLoc, SourceLocation LParenLoc,
+                   SourceLocation EndLoc)
+    : OMPClause(OMPC_default, StartLoc, EndLoc), LParenLoc(LParenLoc),
+      Kind(A), KindKwLoc(ALoc) { }
+
+  /// \brief Build an empty clause.
+  ///
+  OMPDefaultClause()
+    : OMPClause(OMPC_default, SourceLocation(), SourceLocation()),
+      LParenLoc(SourceLocation()), Kind(OMPC_DEFAULT_unknown),
+      KindKwLoc(SourceLocation()) { }
+
+  /// \brief Sets the location of '('.
+  void setLParenLoc(SourceLocation Loc) { LParenLoc = Loc; }
+  /// \brief Returns the location of '('.
+  SourceLocation getLParenLoc() const { return LParenLoc; }
+
+  /// \brief Returns kind of the clause.
+  OpenMPDefaultClauseKind getDefaultKind() const { return Kind; }
+
+  /// \brief Returns location of clause kind.
+  SourceLocation getDefaultKindKwLoc() const { return KindKwLoc; }
+
+  static bool classof(const OMPClause *T) {
+    return T->getClauseKind() == OMPC_default;
+  }
+
+  StmtRange children() {
+    return StmtRange();
+  }
+};
+
+/// \brief This represents clause 'private' in the '#pragma omp ...' directives.
+///
+/// \code
+/// #pragma omp parallel private(a,b)
+/// \endcode
+/// In this example directive '#pragma omp parallel' has clause 'private'
+/// with the variables 'a' and 'b'.
+///
+class OMPPrivateClause : public OMPClause, public OMPVarList<OMPPrivateClause> {
+  /// \brief Build clause with number of variables \a N.
+  ///
+  /// \param StartLoc Starting location of the clause.
+  /// \param LParenLoc Location of '('.
+  /// \param EndLoc Ending location of the clause.
+  /// \param N Number of the variables in the clause.
+  ///
+  OMPPrivateClause(SourceLocation StartLoc, SourceLocation LParenLoc,
+                   SourceLocation EndLoc, unsigned N)
+    : OMPClause(OMPC_private, StartLoc, EndLoc),
+      OMPVarList<OMPPrivateClause>(LParenLoc, N) { }
+
+  /// \brief Build an empty clause.
+  ///
+  /// \param N Number of variables.
+  ///
+  explicit OMPPrivateClause(unsigned N)
+    : OMPClause(OMPC_private, SourceLocation(), SourceLocation()),
+      OMPVarList<OMPPrivateClause>(SourceLocation(), N) { }
+public:
+  /// \brief Creates clause with a list of variables \a VL.
+  ///
+  /// \param C AST context.
+  /// \param StartLoc Starting location of the clause.
+  /// \param LParenLoc Location of '('.
+  /// \param EndLoc Ending location of the clause.
+  /// \param VL List of references to the variables.
+  ///
+  static OMPPrivateClause *Create(const ASTContext &C, SourceLocation StartLoc,
+                                  SourceLocation LParenLoc,
+                                  SourceLocation EndLoc,
+                                  ArrayRef<Expr *> VL);
+  /// \brief Creates an empty clause with the place for \a N variables.
+  ///
+  /// \param C AST context.
+  /// \param N The number of variables.
+  ///
+  static OMPPrivateClause *CreateEmpty(const ASTContext &C, unsigned N);
+
+  StmtRange children() {
+    return StmtRange(reinterpret_cast<Stmt **>(varlist_begin()),
+                     reinterpret_cast<Stmt **>(varlist_end()));
+  }
+
+  static bool classof(const OMPClause *T) {
+    return T->getClauseKind() == OMPC_private;
+  }
+};
+
+/// \brief This represents clause 'firstprivate' in the '#pragma omp ...'
+/// directives.
+///
+/// \code
+/// #pragma omp parallel firstprivate(a,b)
+/// \endcode
+/// In this example directive '#pragma omp parallel' has clause 'firstprivate'
+/// with the variables 'a' and 'b'.
+///
+class OMPFirstprivateClause : public OMPClause,
+                              public OMPVarList<OMPFirstprivateClause> {
+  /// \brief Build clause with number of variables \a N.
+  ///
+  /// \param StartLoc Starting location of the clause.
+  /// \param LParenLoc Location of '('.
+  /// \param EndLoc Ending location of the clause.
+  /// \param N Number of the variables in the clause.
+  ///
+  OMPFirstprivateClause(SourceLocation StartLoc, SourceLocation LParenLoc,
+                   SourceLocation EndLoc, unsigned N)
+    : OMPClause(OMPC_firstprivate, StartLoc, EndLoc),
+      OMPVarList<OMPFirstprivateClause>(LParenLoc, N) { }
+
+  /// \brief Build an empty clause.
+  ///
+  /// \param N Number of variables.
+  ///
+  explicit OMPFirstprivateClause(unsigned N)
+    : OMPClause(OMPC_firstprivate, SourceLocation(), SourceLocation()),
+      OMPVarList<OMPFirstprivateClause>(SourceLocation(), N) { }
+public:
+  /// \brief Creates clause with a list of variables \a VL.
+  ///
+  /// \param C AST context.
+  /// \param StartLoc Starting location of the clause.
+  /// \param LParenLoc Location of '('.
+  /// \param EndLoc Ending location of the clause.
+  /// \param VL List of references to the variables.
+  ///
+  static OMPFirstprivateClause *Create(const ASTContext &C,
+                                       SourceLocation StartLoc,
+                                       SourceLocation LParenLoc,
+                                       SourceLocation EndLoc,
+                                       ArrayRef<Expr *> VL);
+  /// \brief Creates an empty clause with the place for \a N variables.
+  ///
+  /// \param C AST context.
+  /// \param N The number of variables.
+  ///
+  static OMPFirstprivateClause *CreateEmpty(const ASTContext &C, unsigned N);
+
+  StmtRange children() {
+    return StmtRange(reinterpret_cast<Stmt **>(varlist_begin()),
+                     reinterpret_cast<Stmt **>(varlist_end()));
+  }
+
+  static bool classof(const OMPClause *T) {
+    return T->getClauseKind() == OMPC_firstprivate;
+  }
+};
+
+/// \brief This represents clause 'shared' in the '#pragma omp ...' directives.
+///
+/// \code
+/// #pragma omp parallel shared(a,b)
+/// \endcode
+/// In this example directive '#pragma omp parallel' has clause 'shared'
+/// with the variables 'a' and 'b'.
+///
+class OMPSharedClause : public OMPClause, public OMPVarList<OMPSharedClause> {
+  /// \brief Build clause with number of variables \a N.
+  ///
+  /// \param StartLoc Starting location of the clause.
+  /// \param LParenLoc Location of '('.
+  /// \param EndLoc Ending location of the clause.
+  /// \param N Number of the variables in the clause.
+  ///
+  OMPSharedClause(SourceLocation StartLoc, SourceLocation LParenLoc,
+                  SourceLocation EndLoc, unsigned N)
+    : OMPClause(OMPC_shared, StartLoc, EndLoc),
+      OMPVarList<OMPSharedClause>(LParenLoc, N) { }
+
+  /// \brief Build an empty clause.
+  ///
+  /// \param N Number of variables.
+  ///
+  explicit OMPSharedClause(unsigned N)
+    : OMPClause(OMPC_shared, SourceLocation(), SourceLocation()),
+      OMPVarList<OMPSharedClause>(SourceLocation(), N) { }
+public:
+  /// \brief Creates clause with a list of variables \a VL.
+  ///
+  /// \param C AST context.
+  /// \param StartLoc Starting location of the clause.
+  /// \param LParenLoc Location of '('.
+  /// \param EndLoc Ending location of the clause.
+  /// \param VL List of references to the variables.
+  ///
+  static OMPSharedClause *Create(const ASTContext &C, SourceLocation StartLoc,
+                                 SourceLocation LParenLoc,
+                                 SourceLocation EndLoc, ArrayRef<Expr *> VL);
+  /// \brief Creates an empty clause with \a N variables.
+  ///
+  /// \param C AST context.
+  /// \param N The number of variables.
+  ///
+  static OMPSharedClause *CreateEmpty(const ASTContext &C, unsigned N);
+
+  StmtRange children() {
+    return StmtRange(reinterpret_cast<Stmt **>(varlist_begin()),
+                     reinterpret_cast<Stmt **>(varlist_end()));
+  }
+
+  static bool classof(const OMPClause *T) {
+    return T->getClauseKind() == OMPC_shared;
+  }
+};
+
+//===----------------------------------------------------------------------===//
+// AST classes for directives.
+//===----------------------------------------------------------------------===//
+
+/// \brief This is a basic class for representing single OpenMP executable
+/// directive.
+///
+class OMPExecutableDirective : public Stmt {
+  friend class ASTStmtReader;
+  /// \brief Kind of the directive.
+  OpenMPDirectiveKind Kind;
+  /// \brief Starting location of the directive (directive keyword).
+  SourceLocation StartLoc;
+  /// \brief Ending location of the directive.
+  SourceLocation EndLoc;
+  /// \brief Pointer to the list of clauses.
+  llvm::MutableArrayRef<OMPClause *> Clauses;
+  /// \brief Associated statement (if any) and expressions.
+  llvm::MutableArrayRef<Stmt *> StmtAndExpressions;
+protected:
+  /// \brief Build instance of directive of class \a K.
+  ///
+  /// \param SC Statement class.
+  /// \param K Kind of OpenMP directive.
+  /// \param StartLoc Starting location of the directive (directive keyword).
+  /// \param EndLoc Ending location of the directive.
+  ///
+  template <typename T>
+  OMPExecutableDirective(const T *, StmtClass SC, OpenMPDirectiveKind K,
+                         SourceLocation StartLoc, SourceLocation EndLoc,
+                         unsigned NumClauses, unsigned NumberOfExpressions)
+    : Stmt(SC), Kind(K), StartLoc(StartLoc), EndLoc(EndLoc),
+      Clauses(reinterpret_cast<OMPClause **>(static_cast<T *>(this) + 1),
+              NumClauses),
+      StmtAndExpressions(reinterpret_cast<Stmt **>(Clauses.end()),
+                         NumberOfExpressions) { }
+
+  /// \brief Sets the list of variables for this clause.
+  ///
+  /// \param Clauses The list of clauses for the directive.
+  ///
+  void setClauses(ArrayRef<OMPClause *> Clauses);
+
+  /// \brief Set the associated statement for the directive.
+  ///
+  /// /param S Associated statement.
+  ///
+  void setAssociatedStmt(Stmt *S) {
+    StmtAndExpressions[0] = S;
+  }
+
+public:
+  /// \brief Returns starting location of directive kind.
+  SourceLocation getLocStart() const { return StartLoc; }
+  /// \brief Returns ending location of directive.
+  SourceLocation getLocEnd() const { return EndLoc; }
+
+  /// \brief Set starting location of directive kind.
+  ///
+  /// \param Loc New starting location of directive.
+  ///
+  void setLocStart(SourceLocation Loc) { StartLoc = Loc; }
+  /// \brief Set ending location of directive.
+  ///
+  /// \param Loc New ending location of directive.
+  ///
+  void setLocEnd(SourceLocation Loc) { EndLoc = Loc; }
+
+  /// \brief Get number of clauses.
+  unsigned getNumClauses() const { return Clauses.size(); }
+
+  /// \brief Returns specified clause.
+  ///
+  /// \param i Number of clause.
+  ///
+  OMPClause *getClause(unsigned i) const {
+    assert(i < Clauses.size() && "index out of bound!");
+    return Clauses[i];
+  }
+
+  /// \brief Returns statement associated with the directive.
+  Stmt *getAssociatedStmt() const {
+    return StmtAndExpressions[0];
+  }
+
+  OpenMPDirectiveKind getDirectiveKind() const { return Kind; }
+
+  static bool classof(const Stmt *S) {
+    return S->getStmtClass() >= firstOMPExecutableDirectiveConstant &&
+           S->getStmtClass() <= lastOMPExecutableDirectiveConstant;
+  }
+
+  child_range children() {
+    return child_range(StmtAndExpressions.begin(), StmtAndExpressions.end());
+  }
+
+  ArrayRef<OMPClause *> clauses() { return Clauses; }
+
+  ArrayRef<OMPClause *> clauses() const { return Clauses; }
+};
+
+/// \brief This represents '#pragma omp parallel' directive.
+///
+/// \code
+/// #pragma omp parallel private(a,b) reduction(+: c,d)
+/// \endcode
+/// In this example directive '#pragma omp parallel' has clauses 'private'
+/// with the variables 'a' and 'b' and 'reduction' with operator '+' and
+/// variables 'c' and 'd'.
+///
+class OMPParallelDirective : public OMPExecutableDirective {
+  /// \brief Build directive with the given start and end location.
+  ///
+  /// \param StartLoc Starting location of the directive (directive keyword).
+  /// \param EndLoc Ending Location of the directive.
+  ///
+  OMPParallelDirective(SourceLocation StartLoc, SourceLocation EndLoc,
+                       unsigned N)
+    : OMPExecutableDirective(this, OMPParallelDirectiveClass, OMPD_parallel,
+                             StartLoc, EndLoc, N, 1) { }
+
+  /// \brief Build an empty directive.
+  ///
+  /// \param N Number of clauses.
+  ///
+  explicit OMPParallelDirective(unsigned N)
+    : OMPExecutableDirective(this, OMPParallelDirectiveClass, OMPD_parallel,
+                             SourceLocation(), SourceLocation(), N, 1) { }
+public:
+  /// \brief Creates directive with a list of \a Clauses.
+  ///
+  /// \param C AST context.
+  /// \param StartLoc Starting location of the directive kind.
+  /// \param EndLoc Ending Location of the directive.
+  /// \param Clauses List of clauses.
+  /// \param AssociatedStmt Statement associated with the directive.
+  ///
+  static OMPParallelDirective *Create(const ASTContext &C,
+                                      SourceLocation StartLoc,
+                                      SourceLocation EndLoc,
+                                      ArrayRef<OMPClause *> Clauses,
+                                      Stmt *AssociatedStmt);
+
+  /// \brief Creates an empty directive with the place for \a N clauses.
+  ///
+  /// \param C AST context.
+  /// \param N The number of clauses.
+  ///
+  static OMPParallelDirective *CreateEmpty(const ASTContext &C, unsigned N,
+                                           EmptyShell);
+
+  static bool classof(const Stmt *T) {
+    return T->getStmtClass() == OMPParallelDirectiveClass;
+  }
+};
+
+}  // end namespace clang
+
+#endif
diff --git a/include/clang/AST/StmtVisitor.h b/include/clang/AST/StmtVisitor.h
index 38c4c0220e11..c71af38b61b6 100644
--- a/include/clang/AST/StmtVisitor.h
+++ b/include/clang/AST/StmtVisitor.h
@@ -18,6 +18,7 @@
 #include "clang/AST/ExprObjC.h"
 #include "clang/AST/StmtCXX.h"
 #include "clang/AST/StmtObjC.h"
+#include "clang/AST/StmtOpenMP.h"
 
 namespace clang {
 
@@ -184,6 +185,41 @@ template<typename ImplClass, typename RetTy=void>
 class ConstStmtVisitor
  : public StmtVisitorBase<make_const_ptr, ImplClass, RetTy> {};
 
+/// \brief This class implements a simple visitor for OMPClause
+/// subclasses.
+template<class ImplClass, template <typename> class Ptr, typename RetTy>
+class OMPClauseVisitorBase {
+public:
+#define PTR(CLASS) typename Ptr<CLASS>::type
+#define DISPATCH(CLASS) \
+  return static_cast<ImplClass*>(this)->Visit##CLASS(static_cast<PTR(CLASS)>(S))
+
+#define OPENMP_CLAUSE(Name, Class)                              \
+  RetTy Visit ## Class (PTR(Class) S) { DISPATCH(Class); }
+#include "clang/Basic/OpenMPKinds.def"
+
+  RetTy Visit(PTR(OMPClause) S) {
+    // Top switch clause: visit each OMPClause.
+    switch (S->getClauseKind()) {
+    default: llvm_unreachable("Unknown clause kind!");
+#define OPENMP_CLAUSE(Name, Class)                              \
+    case OMPC_ ## Name : return Visit ## Class(static_cast<PTR(Class)>(S));
+#include "clang/Basic/OpenMPKinds.def"
+    }
+  }
+  // Base case, ignore it. :)
+  RetTy VisitOMPClause(PTR(OMPClause) Node) { return RetTy(); }
+#undef PTR
+#undef DISPATCH
+};
+
+template<class ImplClass, typename RetTy = void>
+class OMPClauseVisitor :
+      public OMPClauseVisitorBase <ImplClass, make_ptr, RetTy> {};
+template<class ImplClass, typename RetTy = void>
+class ConstOMPClauseVisitor :
+      public OMPClauseVisitorBase <ImplClass, make_const_ptr, RetTy> {};
+
 }  // end namespace clang
 
 #endif
diff --git a/include/clang/AST/TemplateBase.h b/include/clang/AST/TemplateBase.h
index 70b934f36c2c..6c40eb1168ce 100644
--- a/include/clang/AST/TemplateBase.h
+++ b/include/clang/AST/TemplateBase.h
@@ -60,8 +60,8 @@ public:
     /// The template argument is a pack expansion of a template name that was 
     /// provided for a template template parameter.
     TemplateExpansion,
-    /// The template argument is a value- or type-dependent expression
-    /// stored in an Expr*.
+    /// The template argument is a value- or type-dependent expression or a
+    /// non-dependent __uuidof expression stored in an Expr*.
     Expression,
     /// The template argument is actually a parameter pack. Arguments are stored
     /// in the Args struct.
@@ -70,57 +70,68 @@ public:
 
 private:
   /// \brief The kind of template argument we're storing.
-  unsigned Kind;
 
   struct DA {
-    ValueDecl *D;
+    unsigned Kind;
     bool ForRefParam;
+    ValueDecl *D;
   };
   struct I {
+    unsigned Kind;
     // We store a decomposed APSInt with the data allocated by ASTContext if
     // BitWidth > 64. The memory may be shared between multiple
     // TemplateArgument instances.
+    unsigned BitWidth : 31;
+    unsigned IsUnsigned : 1;
     union {
       uint64_t VAL;          ///< Used to store the <= 64 bits integer value.
       const uint64_t *pVal;  ///< Used to store the >64 bits integer value.
     };
-    unsigned BitWidth : 31;
-    unsigned IsUnsigned : 1;
     void *Type;
   };
   struct A {
-    const TemplateArgument *Args;
+    unsigned Kind;
     unsigned NumArgs;
+    const TemplateArgument *Args;
   };
   struct TA {
-    void *Name;
+    unsigned Kind;
     unsigned NumExpansions;
+    void *Name;
+  };
+  struct TV {
+    unsigned Kind;
+    uintptr_t V;
   };
   union {
     struct DA DeclArg;
     struct I Integer;
     struct A Args;
     struct TA TemplateArg;
-    uintptr_t TypeOrValue;
+    struct TV TypeOrValue;
   };
 
   TemplateArgument(TemplateName, bool) LLVM_DELETED_FUNCTION;
   
 public:
   /// \brief Construct an empty, invalid template argument.
-  TemplateArgument() : Kind(Null), TypeOrValue(0) { }
+  TemplateArgument() {
+    TypeOrValue.Kind = Null;
+    TypeOrValue.V = 0;
+  }
 
   /// \brief Construct a template type argument.
-  TemplateArgument(QualType T, bool isNullPtr = false)
-    : Kind(isNullPtr ? NullPtr : Type) {
-    TypeOrValue = reinterpret_cast<uintptr_t>(T.getAsOpaquePtr());
+  TemplateArgument(QualType T, bool isNullPtr = false) {
+    TypeOrValue.Kind = isNullPtr ? NullPtr : Type;
+    TypeOrValue.V = reinterpret_cast<uintptr_t>(T.getAsOpaquePtr());
   }
 
   /// \brief Construct a template argument that refers to a
   /// declaration, which is either an external declaration or a
   /// template declaration.
-  TemplateArgument(ValueDecl *D, bool ForRefParam) : Kind(Declaration) {
+  TemplateArgument(ValueDecl *D, bool ForRefParam) {
     assert(D && "Expected decl");
+    DeclArg.Kind = Declaration;
     DeclArg.D = D;
     DeclArg.ForRefParam = ForRefParam;
   }
@@ -131,8 +142,7 @@ public:
 
   /// \brief Construct an integral constant template argument with the same
   /// value as Other but a different type.
-  TemplateArgument(const TemplateArgument &Other, QualType Type)
-    : Kind(Integral) {
+  TemplateArgument(const TemplateArgument &Other, QualType Type) {
     Integer = Other.Integer;
     Integer.Type = Type.getAsOpaquePtr();
   }
@@ -145,8 +155,8 @@ public:
   /// is taken.
   ///
   /// \param Name The template name.
-  TemplateArgument(TemplateName Name) : Kind(Template) 
-  {
+  TemplateArgument(TemplateName Name) {
+    TemplateArg.Kind = Template;
     TemplateArg.Name = Name.getAsVoidPointer();
     TemplateArg.NumExpansions = 0;
   }
@@ -162,9 +172,8 @@ public:
   ///
   /// \param NumExpansions The number of expansions that will be generated by
   /// instantiating
-  TemplateArgument(TemplateName Name, Optional<unsigned> NumExpansions)
-    : Kind(TemplateExpansion) 
-  {
+  TemplateArgument(TemplateName Name, Optional<unsigned> NumExpansions) {
+    TemplateArg.Kind = TemplateExpansion;
     TemplateArg.Name = Name.getAsVoidPointer();
     if (NumExpansions)
       TemplateArg.NumExpansions = *NumExpansions + 1;
@@ -177,15 +186,17 @@ public:
   /// This form of template argument only occurs in template argument
   /// lists used for dependent types and for expression; it will not
   /// occur in a non-dependent, canonical template argument list.
-  TemplateArgument(Expr *E) : Kind(Expression) {
-    TypeOrValue = reinterpret_cast<uintptr_t>(E);
+  TemplateArgument(Expr *E) {
+    TypeOrValue.Kind = Expression;
+    TypeOrValue.V = reinterpret_cast<uintptr_t>(E);
   }
 
   /// \brief Construct a template argument that is a template argument pack.
   ///
   /// We assume that storage for the template arguments provided
   /// outlives the TemplateArgument itself.
-  TemplateArgument(const TemplateArgument *Args, unsigned NumArgs) : Kind(Pack){
+  TemplateArgument(const TemplateArgument *Args, unsigned NumArgs) {
+    this->Args.Kind = Pack;
     this->Args.Args = Args;
     this->Args.NumArgs = NumArgs;
   }
@@ -201,10 +212,10 @@ public:
                                          unsigned NumArgs);
   
   /// \brief Return the kind of stored template argument.
-  ArgKind getKind() const { return (ArgKind)Kind; }
+  ArgKind getKind() const { return (ArgKind)TypeOrValue.Kind; }
 
   /// \brief Determine whether this template argument has no value.
-  bool isNull() const { return Kind == Null; }
+  bool isNull() const { return getKind() == Null; }
 
   /// \brief Whether this template argument is dependent on a template
   /// parameter such that its result can change from one instantiation to
@@ -224,40 +235,40 @@ public:
   
   /// \brief Retrieve the type for a type template argument.
   QualType getAsType() const {
-    assert(Kind == Type && "Unexpected kind");
-    return QualType::getFromOpaquePtr(reinterpret_cast<void*>(TypeOrValue));
+    assert(getKind() == Type && "Unexpected kind");
+    return QualType::getFromOpaquePtr(reinterpret_cast<void*>(TypeOrValue.V));
   }
 
   /// \brief Retrieve the declaration for a declaration non-type
   /// template argument.
   ValueDecl *getAsDecl() const {
-    assert(Kind == Declaration && "Unexpected kind");
+    assert(getKind() == Declaration && "Unexpected kind");
     return DeclArg.D;
   }
 
   /// \brief Retrieve whether a declaration is binding to a
   /// reference parameter in a declaration non-type template argument.
   bool isDeclForReferenceParam() const {
-    assert(Kind == Declaration && "Unexpected kind");
+    assert(getKind() == Declaration && "Unexpected kind");
     return DeclArg.ForRefParam;
   }
 
   /// \brief Retrieve the type for null non-type template argument.
   QualType getNullPtrType() const {
-    assert(Kind == NullPtr && "Unexpected kind");
-    return QualType::getFromOpaquePtr(reinterpret_cast<void*>(TypeOrValue));
+    assert(getKind() == NullPtr && "Unexpected kind");
+    return QualType::getFromOpaquePtr(reinterpret_cast<void*>(TypeOrValue.V));
   }
 
   /// \brief Retrieve the template name for a template name argument.
   TemplateName getAsTemplate() const {
-    assert(Kind == Template && "Unexpected kind");
+    assert(getKind() == Template && "Unexpected kind");
     return TemplateName::getFromVoidPointer(TemplateArg.Name);
   }
 
   /// \brief Retrieve the template argument as a template name; if the argument
   /// is a pack expansion, return the pattern as a template name.
   TemplateName getAsTemplateOrTemplatePattern() const {
-    assert((Kind == Template || Kind == TemplateExpansion) &&
+    assert((getKind() == Template || getKind() == TemplateExpansion) &&
            "Unexpected kind");
     
     return TemplateName::getFromVoidPointer(TemplateArg.Name);
@@ -270,7 +281,7 @@ public:
   /// \brief Retrieve the template argument as an integral value.
   // FIXME: Provide a way to read the integral data without copying the value.
   llvm::APSInt getAsIntegral() const {
-    assert(Kind == Integral && "Unexpected kind");
+    assert(getKind() == Integral && "Unexpected kind");
     using namespace llvm;
     if (Integer.BitWidth <= 64)
       return APSInt(APInt(Integer.BitWidth, Integer.VAL), Integer.IsUnsigned);
@@ -282,19 +293,19 @@ public:
 
   /// \brief Retrieve the type of the integral value.
   QualType getIntegralType() const {
-    assert(Kind == Integral && "Unexpected kind");
+    assert(getKind() == Integral && "Unexpected kind");
     return QualType::getFromOpaquePtr(Integer.Type);
   }
 
   void setIntegralType(QualType T) {
-    assert(Kind == Integral && "Unexpected kind");
+    assert(getKind() == Integral && "Unexpected kind");
     Integer.Type = T.getAsOpaquePtr();
   }
 
   /// \brief Retrieve the template argument as an expression.
   Expr *getAsExpr() const {
-    assert(Kind == Expression && "Unexpected kind");
-    return reinterpret_cast<Expr *>(TypeOrValue);
+    assert(getKind() == Expression && "Unexpected kind");
+    return reinterpret_cast<Expr *>(TypeOrValue.V);
   }
 
   /// \brief Iterator that traverses the elements of a template argument pack.
@@ -303,27 +314,27 @@ public:
   /// \brief Iterator referencing the first argument of a template argument
   /// pack.
   pack_iterator pack_begin() const {
-    assert(Kind == Pack);
+    assert(getKind() == Pack);
     return Args.Args;
   }
 
   /// \brief Iterator referencing one past the last argument of a template
   /// argument pack.
   pack_iterator pack_end() const {
-    assert(Kind == Pack);
+    assert(getKind() == Pack);
     return Args.Args + Args.NumArgs;
   }
 
   /// \brief The number of template arguments in the given template argument
   /// pack.
   unsigned pack_size() const {
-    assert(Kind == Pack);
+    assert(getKind() == Pack);
     return Args.NumArgs;
   }
 
   /// \brief Return the array of arguments in this template argument pack.
   llvm::ArrayRef<TemplateArgument> getPackAsArray() const {
-    assert(Kind == Pack);
+    assert(getKind() == Pack);
     return llvm::ArrayRef<TemplateArgument>(Args.Args, Args.NumArgs);
   }
 
@@ -494,17 +505,6 @@ public:
     assert(Argument.getKind() == TemplateArgument::TemplateExpansion);
     return LocInfo.getTemplateEllipsisLoc();
   }
-  
-  /// \brief When the template argument is a pack expansion, returns 
-  /// the pattern of the pack expansion.
-  ///
-  /// \param Ellipsis Will be set to the location of the ellipsis.
-  ///
-  /// \param NumExpansions Will be set to the number of expansions that will
-  /// be generated from this pack expansion, if known a priori.
-  TemplateArgumentLoc getPackExpansionPattern(SourceLocation &Ellipsis,
-                                              Optional<unsigned> &NumExpansions,
-                                              ASTContext &Context) const;
 };
 
 /// A convenient class for passing around template argument
diff --git a/include/clang/AST/Type.h b/include/clang/AST/Type.h
index 39f10d3393ba..fb829e4d4103 100644
--- a/include/clang/AST/Type.h
+++ b/include/clang/AST/Type.h
@@ -441,7 +441,7 @@ public:
   bool operator==(Qualifiers Other) const { return Mask == Other.Mask; }
   bool operator!=(Qualifiers Other) const { return Mask != Other.Mask; }
 
-  operator bool() const { return hasQualifiers(); }
+  LLVM_EXPLICIT operator bool() const { return hasQualifiers(); }
 
   Qualifiers &operator+=(Qualifiers R) {
     addQualifiers(R);
@@ -818,7 +818,7 @@ public:
   /// an lvalue. It removes a top-level reference (since there are no
   /// expressions of reference type) and deletes top-level cvr-qualifiers
   /// from non-class types (in C++) or all types (in C).
-  QualType getNonLValueExprType(ASTContext &Context) const;
+  QualType getNonLValueExprType(const ASTContext &Context) const;
 
   /// getDesugaredType - Return the specified type with any "sugar" removed from
   /// the type.  This takes off typedefs, typeof's etc.  If the outer level of
@@ -1194,7 +1194,7 @@ private:
     mutable unsigned CacheValid : 1;
 
     /// \brief Linkage of this type.
-    mutable unsigned CachedLinkage : 2;
+    mutable unsigned CachedLinkage : 3;
 
     /// \brief Whether this type involves and local or unnamed types.
     mutable unsigned CachedLocalOrUnnamed : 1;
@@ -1214,7 +1214,7 @@ private:
       return CachedLocalOrUnnamed;
     }
   };
-  enum { NumTypeBits = 19 };
+  enum { NumTypeBits = 18 };
 
 protected:
   // These classes allow subclasses to somewhat cleanly pack bitfields
@@ -1315,6 +1315,8 @@ protected:
 
     /// NumElements - The number of elements in the vector.
     unsigned NumElements : 29 - NumTypeBits;
+
+    enum { MaxNumElements = (1 << (29 - NumTypeBits)) - 1 };
   };
 
   class AttributedTypeBitfields {
@@ -1454,7 +1456,7 @@ public:
 
   /// isLiteralType - Return true if this is a literal type
   /// (C++11 [basic.types]p10)
-  bool isLiteralType(ASTContext &Ctx) const;
+  bool isLiteralType(const ASTContext &Ctx) const;
 
   /// \brief Test if this type is a standard-layout type.
   /// (C++0x [basic.type]p9)
@@ -1512,7 +1514,6 @@ public:
   bool isRealType() const;         // C99 6.2.5p17 (real floating + integer)
   bool isArithmeticType() const;   // C99 6.2.5p18 (integer + floating)
   bool isVoidType() const;         // C99 6.2.5p19
-  bool isDerivedType() const;      // C99 6.2.5p20
   bool isScalarType() const;       // C99 6.2.5p21 (arithmetic + pointers)
   bool isAggregateType() const;
   bool isFundamentalType() const;
@@ -1811,6 +1812,10 @@ template <> const TypedefType *Type::getAs() const;
 /// non-sugared type.
 template <> const TemplateSpecializationType *Type::getAs() const;
 
+/// \brief This will check for an AttributedType by removing any existing sugar
+/// until it reaches an AttributedType or a non-sugared type.
+template <> const AttributedType *Type::getAs() const;
+
 // We can do canonical leaf types faster, because we don't have to
 // worry about preserving child type decoration.
 #define TYPE(Class, Base)
@@ -1991,6 +1996,44 @@ public:
   static bool classof(const Type *T) { return T->getTypeClass() == Pointer; }
 };
 
+/// \brief Represents a pointer type decayed from an array or function type.
+class DecayedType : public Type, public llvm::FoldingSetNode {
+  QualType OriginalType;
+  QualType DecayedPointer;
+
+  DecayedType(QualType OriginalType, QualType DecayedPointer,
+              QualType CanonicalPtr)
+      : Type(Decayed, CanonicalPtr, OriginalType->isDependentType(),
+             OriginalType->isInstantiationDependentType(),
+             OriginalType->isVariablyModifiedType(),
+             OriginalType->containsUnexpandedParameterPack()),
+        OriginalType(OriginalType), DecayedPointer(DecayedPointer) {
+    assert(isa<PointerType>(DecayedPointer));
+  }
+
+  friend class ASTContext;  // ASTContext creates these.
+
+public:
+  QualType getDecayedType() const { return DecayedPointer; }
+  QualType getOriginalType() const { return OriginalType; }
+
+  QualType getPointeeType() const {
+    return cast<PointerType>(DecayedPointer)->getPointeeType();
+  }
+
+  bool isSugared() const { return true; }
+  QualType desugar() const { return DecayedPointer; }
+
+  void Profile(llvm::FoldingSetNodeID &ID) {
+    Profile(ID, OriginalType);
+  }
+  static void Profile(llvm::FoldingSetNodeID &ID, QualType OriginalType) {
+    ID.AddPointer(OriginalType.getAsOpaquePtr());
+  }
+
+  static bool classof(const Type *T) { return T->getTypeClass() == Decayed; }
+};
+
 /// BlockPointerType - pointer to a block type.
 /// This type is to represent types syntactically represented as
 /// "void (^)(int)", etc. Pointee is required to always be a function type.
@@ -2487,6 +2530,9 @@ public:
 
   QualType getElementType() const { return ElementType; }
   unsigned getNumElements() const { return VectorTypeBits.NumElements; }
+  static bool isVectorSizeTooLarge(unsigned NumElements) {
+    return NumElements > VectorTypeBitfields::MaxNumElements;
+  }
 
   bool isSugared() const { return false; }
   QualType desugar() const { return QualType(this, 0); }
@@ -2641,7 +2687,11 @@ class FunctionType : public Type {
 
     // Constructor with all defaults. Use when for example creating a
     // function know to use defaults.
-    ExtInfo() : Bits(0) {}
+    ExtInfo() : Bits(CC_C) { }
+
+    // Constructor with just the calling convention, which is an important part
+    // of the canonical type.
+    ExtInfo(CallingConv CC) : Bits(CC) { }
 
     bool getNoReturn() const { return Bits & NoReturnMask; }
     bool getProducesResult() const { return Bits & ProducesResultMask; }
@@ -2784,6 +2834,12 @@ public:
       ExceptionSpecDecl(0), ExceptionSpecTemplate(0),
       ConsumedArguments(0) {}
 
+    ExtProtoInfo(CallingConv CC)
+        : ExtInfo(CC), Variadic(false), HasTrailingReturn(false), TypeQuals(0),
+          ExceptionSpecType(EST_None), RefQualifier(RQ_None), NumExceptions(0),
+          Exceptions(0), NoexceptExpr(0), ExceptionSpecDecl(0),
+          ExceptionSpecTemplate(0), ConsumedArguments(0) {}
+
     FunctionType::ExtInfo ExtInfo;
     bool Variadic : 1;
     bool HasTrailingReturn : 1;
@@ -2928,7 +2984,7 @@ public:
     NR_Nothrow      ///< The noexcept specifier evaluates to true.
   };
   /// \brief Get the meaning of the noexcept spec on this function, if any.
-  NoexceptResult getNoexceptSpec(ASTContext &Ctx) const;
+  NoexceptResult getNoexceptSpec(const ASTContext &Ctx) const;
   unsigned getNumExceptions() const { return NumExceptions; }
   QualType getExceptionType(unsigned i) const {
     assert(i < NumExceptions && "Invalid exception number!");
@@ -2959,7 +3015,7 @@ public:
       return 0;
     return reinterpret_cast<FunctionDecl * const *>(arg_type_end())[1];
   }
-  bool isNothrow(ASTContext &Ctx) const {
+  bool isNothrow(const ASTContext &Ctx) const {
     ExceptionSpecificationType EST = getExceptionSpecType();
     assert(EST != EST_Unevaluated && EST != EST_Uninstantiated);
     if (EST == EST_DynamicNone || EST == EST_BasicNoexcept)
@@ -3323,9 +3379,10 @@ public:
     attr_objc_gc,
     attr_objc_ownership,
     attr_pcs,
+    attr_pcs_vfp,
 
     FirstEnumOperandKind = attr_objc_gc,
-    LastEnumOperandKind = attr_pcs,
+    LastEnumOperandKind = attr_pcs_vfp,
 
     // No operand.
     attr_noreturn,
@@ -3335,7 +3392,13 @@ public:
     attr_thiscall,
     attr_pascal,
     attr_pnaclcall,
-    attr_inteloclbicc
+    attr_inteloclbicc,
+    attr_ms_abi,
+    attr_sysv_abi,
+    attr_ptr32,
+    attr_ptr64,
+    attr_sptr,
+    attr_uptr
   };
 
 private:
@@ -3365,6 +3428,10 @@ public:
   bool isSugared() const { return true; }
   QualType desugar() const { return getEquivalentType(); }
 
+  bool isMSTypeSpec() const;
+
+  bool isCallingConv() const;
+
   void Profile(llvm::FoldingSetNodeID &ID) {
     Profile(ID, getAttrKind(), ModifiedType, EquivalentType);
   }
@@ -3563,10 +3630,13 @@ public:
 /// is no deduced type and an auto type is canonical. In the latter case, it is
 /// also a dependent type.
 class AutoType : public Type, public llvm::FoldingSetNode {
-  AutoType(QualType DeducedType, bool IsDecltypeAuto, bool IsDependent)
+  AutoType(QualType DeducedType, bool IsDecltypeAuto, 
+           bool IsDependent)
     : Type(Auto, DeducedType.isNull() ? QualType(this, 0) : DeducedType,
            /*Dependent=*/IsDependent, /*InstantiationDependent=*/IsDependent,
-           /*VariablyModified=*/false, /*ContainsParameterPack=*/false) {
+           /*VariablyModified=*/false, 
+           /*ContainsParameterPack=*/DeducedType.isNull() 
+               ? false : DeducedType->containsUnexpandedParameterPack()) {
     assert((DeducedType.isNull() || !IsDependent) &&
            "auto deduced to dependent type");
     AutoTypeBits.IsDecltypeAuto = IsDecltypeAuto;
@@ -3590,7 +3660,8 @@ public:
   }
 
   void Profile(llvm::FoldingSetNodeID &ID) {
-    Profile(ID, getDeducedType(), isDecltypeAuto(), isDependentType());
+    Profile(ID, getDeducedType(), isDecltypeAuto(), 
+		    isDependentType());
   }
 
   static void Profile(llvm::FoldingSetNodeID &ID, QualType Deduced,
@@ -3654,10 +3725,6 @@ class TemplateSpecializationType
 public:
   /// \brief Determine whether any of the given template arguments are
   /// dependent.
-  static bool anyDependentTemplateArguments(const TemplateArgument *Args,
-                                            unsigned NumArgs,
-                                            bool &InstantiationDependent);
-
   static bool anyDependentTemplateArguments(const TemplateArgumentLoc *Args,
                                             unsigned NumArgs,
                                             bool &InstantiationDependent);
@@ -4154,8 +4221,8 @@ public:
     return None;
   }
 
-  bool isSugared() const { return false; }
-  QualType desugar() const { return QualType(this, 0); }
+  bool isSugared() const { return !Pattern->isDependentType(); }
+  QualType desugar() const { return isSugared() ? Pattern : QualType(this, 0); }
 
   void Profile(llvm::FoldingSetNodeID &ID) {
     Profile(ID, getPattern(), getNumExpansions());
@@ -4189,11 +4256,11 @@ public:
 ///
 /// 'C<P>' is an ObjCObjectType with base C and protocol list [P].
 ///
-/// 'id' is a TypedefType which is sugar for an ObjCPointerType whose
+/// 'id' is a TypedefType which is sugar for an ObjCObjectPointerType whose
 /// pointee is an ObjCObjectType with base BuiltinType::ObjCIdType
 /// and no protocols.
 ///
-/// 'id<P>' is an ObjCPointerType whose pointee is an ObjCObjecType
+/// 'id<P>' is an ObjCObjectPointerType whose pointee is an ObjCObjectType
 /// with base BuiltinType::ObjCIdType and protocol list [P].  Eventually
 /// this should get its own sugar class to better represent the source.
 class ObjCObjectType : public Type {
@@ -4231,7 +4298,7 @@ public:
   /// getBaseType - Gets the base type of this object type.  This is
   /// always (possibly sugar for) one of:
   ///  - the 'id' builtin type (as opposed to the 'id' type visible to the
-  ///    user, which is a typedef for an ObjCPointerType)
+  ///    user, which is a typedef for an ObjCObjectPointerType)
   ///  - the 'Class' builtin type (same caveat)
   ///  - an ObjCObjectType (currently always an ObjCInterfaceType)
   QualType getBaseType() const { return BaseType; }
diff --git a/include/clang/AST/TypeLoc.h b/include/clang/AST/TypeLoc.h
index 11cad9bb9dd9..8ddfac7ad373 100644
--- a/include/clang/AST/TypeLoc.h
+++ b/include/clang/AST/TypeLoc.h
@@ -6,9 +6,10 @@
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
-//
-//  This file defines the TypeLoc interface and subclasses.
-//
+///
+/// \file
+/// \brief Defines the clang::TypeLoc interface and its subclasses.
+///
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_CLANG_AST_TYPELOC_H
@@ -34,8 +35,8 @@ namespace clang {
 
 /// \brief Base wrapper for a particular "section" of type source info.
 ///
-/// A client should use the TypeLoc subclasses through cast/dyn_cast in order to
-/// get at the actual information.
+/// A client should use the TypeLoc subclasses through castAs()/getAs()
+/// in order to get at the actual information.
 class TypeLoc {
 protected:
   // The correctness of this relies on the property that, for Type *Ty,
@@ -46,6 +47,8 @@ protected:
 public:
   /// \brief Convert to the specified TypeLoc type, asserting that this TypeLoc
   /// is of the desired type.
+  ///
+  /// \pre T::isKind(*this)
   template<typename T>
   T castAs() const {
     assert(T::isKind(*this));
@@ -90,11 +93,15 @@ public:
   }
 
   bool isNull() const { return !Ty; }
-  operator bool() const { return Ty; }
+  LLVM_EXPLICIT operator bool() const { return Ty; }
 
   /// \brief Returns the size of type source info data block for the given type.
   static unsigned getFullDataSizeForType(QualType Ty);
 
+  /// \brief Returns the alignment of type source info data block for
+  /// the given type.
+  static unsigned getLocalAlignmentForType(QualType Ty);
+
   /// \brief Get the type for which this source info wrapper provides
   /// information.
   QualType getType() const {
@@ -229,7 +236,11 @@ public:
   }
 
   UnqualTypeLoc getUnqualifiedLoc() const {
-    return UnqualTypeLoc(getTypePtr(), Data);
+    unsigned align =
+        TypeLoc::getLocalAlignmentForType(QualType(getTypePtr(), 0));
+    uintptr_t dataInt = reinterpret_cast<uintptr_t>(Data);
+    dataInt = llvm::RoundUpToAlignment(dataInt, align);
+    return UnqualTypeLoc(getTypePtr(), reinterpret_cast<void*>(dataInt));
   }
 
   /// Initializes the local data of this type source info block to
@@ -250,10 +261,11 @@ public:
     return 0;
   }
 
-  /// \brief Returns the size of the type source info data block.
-  unsigned getFullDataSize() const {
-    return getLocalDataSize() +
-      getFullDataSizeForType(getType().getLocalUnqualifiedType());
+  /// \brief Returns the alignment of the type source info data block that is
+  /// specific to this type.
+  unsigned getLocalDataAlignment() const {
+    // We don't preserve any location information.
+    return 1;
   }
 
 private:
@@ -280,9 +292,6 @@ inline UnqualTypeLoc TypeLoc::getUnqualifiedLoc() const {
 /// \tparam LocalData the structure type of local location data for
 ///   this type
 ///
-/// sizeof(LocalData) needs to be a multiple of sizeof(void*) or
-/// else the world will end.
-///
 /// TypeLocs with non-constant amounts of local data should override
 /// getExtraLocalDataSize(); getExtraLocalData() will then point to
 /// this extra memory.
@@ -309,7 +318,8 @@ class ConcreteTypeLoc : public Base {
 
   friend class TypeLoc;
   static bool isKind(const TypeLoc &TL) {
-    return Derived::classofType(TL.getTypePtr());
+    return !TL.getType().hasLocalQualifiers() &&
+           Derived::classofType(TL.getTypePtr());
   }
 
   static bool classofType(const Type *Ty) {
@@ -317,12 +327,16 @@ class ConcreteTypeLoc : public Base {
   }
 
 public:
-  unsigned getLocalDataSize() const {
-    return sizeof(LocalData) + asDerived()->getExtraLocalDataSize();
+  unsigned getLocalDataAlignment() const {
+    return std::max(llvm::alignOf<LocalData>(),
+                    asDerived()->getExtraLocalDataAlignment());
   }
-  // Give a default implementation that's useful for leaf types.
-  unsigned getFullDataSize() const {
-    return asDerived()->getLocalDataSize() + getInnerTypeSize();
+  unsigned getLocalDataSize() const {
+    unsigned size = sizeof(LocalData);
+    unsigned extraAlign = asDerived()->getExtraLocalDataAlignment();
+    size = llvm::RoundUpToAlignment(size, extraAlign);
+    size += asDerived()->getExtraLocalDataSize();
+    return size;
   }
 
   TypeLoc getNextTypeLoc() const {
@@ -338,6 +352,10 @@ protected:
     return 0;
   }
 
+  unsigned getExtraLocalDataAlignment() const {
+    return 1;
+  }
+
   LocalData *getLocalData() const {
     return static_cast<LocalData*>(Base::Data);
   }
@@ -346,11 +364,17 @@ protected:
   /// local data that can't be captured in the Info (e.g. because it's
   /// of variable size).
   void *getExtraLocalData() const {
-    return getLocalData() + 1;
+    unsigned size = sizeof(LocalData);
+    unsigned extraAlign = asDerived()->getExtraLocalDataAlignment();
+    size = llvm::RoundUpToAlignment(size, extraAlign);
+    return reinterpret_cast<char*>(Base::Data) + size;
   }
 
   void *getNonLocalData() const {
-    return static_cast<char*>(Base::Data) + asDerived()->getLocalDataSize();
+    uintptr_t data = reinterpret_cast<uintptr_t>(Base::Data);
+    data += asDerived()->getLocalDataSize();
+    data = llvm::RoundUpToAlignment(data, getNextTypeAlign());
+    return reinterpret_cast<void*>(data);
   }
 
   struct HasNoInnerType {};
@@ -373,6 +397,18 @@ private:
     return getInnerTypeLoc().getFullDataSize();
   }
 
+  unsigned getNextTypeAlign() const {
+    return getNextTypeAlign(asDerived()->getInnerType());
+  }
+
+  unsigned getNextTypeAlign(HasNoInnerType _) const {
+    return 1;
+  }
+
+  unsigned getNextTypeAlign(QualType T) const {
+    return TypeLoc::getLocalAlignmentForType(T);
+  }
+
   TypeLoc getNextTypeLoc(HasNoInnerType _) const {
     return TypeLoc();
   }
@@ -393,7 +429,8 @@ class InheritingConcreteTypeLoc : public Base {
   }
 
   static bool isKind(const TypeLoc &TL) {
-    return Derived::classofType(TL.getTypePtr());
+    return !TL.getType().hasLocalQualifiers() &&
+           Derived::classofType(TL.getTypePtr());
   }
   static bool isKind(const UnqualTypeLoc &TL) {
     return Derived::classofType(TL.getTypePtr());
@@ -417,7 +454,8 @@ class TypeSpecTypeLoc : public ConcreteTypeLoc<UnqualTypeLoc,
                                                Type,
                                                TypeSpecLocInfo> {
 public:
-  enum { LocalDataSize = sizeof(TypeSpecLocInfo) };
+  enum { LocalDataSize = sizeof(TypeSpecLocInfo),
+         LocalDataAlignment = llvm::AlignOf<TypeSpecLocInfo>::Alignment };
 
   SourceLocation getNameLoc() const {
     return this->getLocalData()->NameLoc;
@@ -448,8 +486,6 @@ class BuiltinTypeLoc : public ConcreteTypeLoc<UnqualTypeLoc,
                                               BuiltinType,
                                               BuiltinLocInfo> {
 public:
-  enum { LocalDataSize = sizeof(BuiltinLocInfo) };
-
   SourceLocation getBuiltinLoc() const {
     return getLocalData()->BuiltinLoc;
   }
@@ -478,6 +514,10 @@ public:
     return needsExtraLocalData() ? sizeof(WrittenBuiltinSpecs) : 0;
   }
 
+  unsigned getExtraLocalDataAlignment() const {
+    return needsExtraLocalData() ? llvm::alignOf<WrittenBuiltinSpecs>() : 1;
+  }
+
   SourceRange getLocalSourceRange() const {
     return SourceRange(getBuiltinLoc(), getBuiltinLoc());
   }
@@ -840,6 +880,10 @@ public:
     return this->getNumProtocols() * sizeof(SourceLocation);
   }
 
+  unsigned getExtraLocalDataAlignment() const {
+    return llvm::alignOf<SourceLocation>();
+  }
+
   QualType getInnerType() const {
     return getTypePtr()->getBaseType();
   }
@@ -933,6 +977,40 @@ inline TypeLoc TypeLoc::IgnoreParens() const {
   return *this;
 }
 
+
+struct DecayedLocInfo { }; // Nothing.
+
+/// \brief Wrapper for source info for pointers decayed from arrays and
+/// functions.
+class DecayedTypeLoc : public ConcreteTypeLoc<UnqualTypeLoc, DecayedTypeLoc,
+                                              DecayedType, DecayedLocInfo> {
+public:
+  TypeLoc getOriginalLoc() const {
+    return getInnerTypeLoc();
+  }
+
+  void initializeLocal(ASTContext &Context, SourceLocation Loc) {
+    // do nothing
+  }
+
+  QualType getInnerType() const {
+    // The inner type is the undecayed type, since that's what we have source
+    // location information for.
+    return getTypePtr()->getOriginalType();
+  }
+
+  SourceRange getLocalSourceRange() const {
+    return SourceRange();
+  }
+
+  unsigned getLocalDataSize() const {
+    // sizeof(DecayedLocInfo) is 1, but we don't need its address to be unique
+    // anyway.  TypeLocBuilder can't handle data sizes of 1.
+    return 0;  // No data.
+  }
+};
+
+
 struct PointerLikeLocInfo {
   SourceLocation StarLoc;
 };
@@ -1166,6 +1244,10 @@ public:
     return getNumArgs() * sizeof(ParmVarDecl*);
   }
 
+  unsigned getExtraLocalDataAlignment() const {
+    return llvm::alignOf<ParmVarDecl*>();
+  }
+
   QualType getInnerType() const { return getTypePtr()->getResultType(); }
 };
 
@@ -1357,6 +1439,10 @@ public:
     return getNumArgs() * sizeof(TemplateArgumentLocInfo);
   }
 
+  unsigned getExtraLocalDataAlignment() const {
+    return llvm::alignOf<TemplateArgumentLocInfo>();
+  }
+
 private:
   TemplateArgumentLocInfo *getArgInfos() const {
     return static_cast<TemplateArgumentLocInfo*>(getExtraLocalData());
@@ -1761,6 +1847,10 @@ public:
     return getNumArgs() * sizeof(TemplateArgumentLocInfo);
   }
 
+  unsigned getExtraLocalDataAlignment() const {
+    return llvm::alignOf<TemplateArgumentLocInfo>();
+  }
+
 private:
   TemplateArgumentLocInfo *getArgInfos() const {
     return static_cast<TemplateArgumentLocInfo*>(getExtraLocalData());
diff --git a/include/clang/AST/TypeNodes.def b/include/clang/AST/TypeNodes.def
index 840e07d94a0d..3126f48c644a 100644
--- a/include/clang/AST/TypeNodes.def
+++ b/include/clang/AST/TypeNodes.def
@@ -81,6 +81,7 @@ TYPE(FunctionNoProto, FunctionType)
 DEPENDENT_TYPE(UnresolvedUsing, Type)
 NON_CANONICAL_TYPE(Paren, Type)
 NON_CANONICAL_TYPE(Typedef, Type)
+NON_CANONICAL_TYPE(Decayed, Type)
 NON_CANONICAL_UNLESS_DEPENDENT_TYPE(TypeOfExpr, Type)
 NON_CANONICAL_UNLESS_DEPENDENT_TYPE(TypeOf, Type)
 NON_CANONICAL_UNLESS_DEPENDENT_TYPE(Decltype, Type)
@@ -98,7 +99,7 @@ TYPE(Auto, Type)
 DEPENDENT_TYPE(InjectedClassName, Type)
 DEPENDENT_TYPE(DependentName, Type)
 DEPENDENT_TYPE(DependentTemplateSpecialization, Type)
-DEPENDENT_TYPE(PackExpansion, Type)
+NON_CANONICAL_UNLESS_DEPENDENT_TYPE(PackExpansion, Type)
 TYPE(ObjCObject, Type)
 TYPE(ObjCInterface, ObjCObjectType)
 TYPE(ObjCObjectPointer, Type)
diff --git a/include/clang/AST/TypeOrdering.h b/include/clang/AST/TypeOrdering.h
index 59b59f517168..9c9f15e95323 100644
--- a/include/clang/AST/TypeOrdering.h
+++ b/include/clang/AST/TypeOrdering.h
@@ -6,11 +6,14 @@
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
-//
-//  This file provides a function objects and specializations that
-//  allow QualType values to be sorted, used in std::maps, std::sets,
-//  llvm::DenseMaps, and llvm::DenseSets.
-//
+///
+/// \file
+/// \brief Allows QualTypes to be sorted and hence used in maps and sets.
+///
+/// Defines clang::QualTypeOrdering, a total ordering on clang::QualType,
+/// and hence enables QualType values to be sorted and to be used in
+/// std::maps, std::sets, llvm::DenseMaps, and llvm::DenseSets.
+///
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_CLANG_TYPE_ORDERING_H
@@ -22,8 +25,7 @@
 
 namespace clang {
 
-/// QualTypeOrdering - Function object that provides a total ordering
-/// on QualType values.
+/// \brief Function object that provides a total ordering on QualType values.
 struct QualTypeOrdering : std::binary_function<QualType, QualType, bool> {
   bool operator()(QualType T1, QualType T2) const {
     return std::less<void*>()(T1.getAsOpaquePtr(), T2.getAsOpaquePtr());
diff --git a/include/clang/AST/TypeVisitor.h b/include/clang/AST/TypeVisitor.h
index 242aa586d510..11e5a47f1f29 100644
--- a/include/clang/AST/TypeVisitor.h
+++ b/include/clang/AST/TypeVisitor.h
@@ -22,9 +22,50 @@ namespace clang {
   return static_cast<ImplClass*>(this)-> \
            Visit##CLASS(static_cast<const CLASS*>(T))
 
+/// \brief An operation on a type.
+///
+/// \tparam ImplClass Class implementing the operation. Must be inherited from
+///         TypeVisitor.
+/// \tparam RetTy %Type of result produced by the operation.
+///
+/// The class implements polymorphic operation on an object of type derived
+/// from Type. The operation is performed by calling method Visit. It then
+/// dispatches the call to function \c VisitFooType, if actual argument type
+/// is \c FooType.
+///
+/// The class implements static polymorphism using Curiously Recurring
+/// Template Pattern. It is designed to be a base class for some concrete
+/// class:
+///
+/// \code
+///     class SomeVisitor : public TypeVisitor<SomeVisitor,sometype> { ... };
+///     ...
+///     Type *atype = ...
+///     ...
+///     SomeVisitor avisitor;
+///     sometype result = avisitor.Visit(atype);
+/// \endcode
+///
+/// Actual treatment is made by methods of the derived class, TypeVisitor only
+/// dispatches call to the appropriate method. If the implementation class
+/// \c ImplClass provides specific action for some type, say
+/// \c ConstantArrayType, it should define method
+/// <tt>VisitConstantArrayType(const ConstantArrayType*)</tt>. Otherwise
+/// \c TypeVisitor dispatches call to the method that handles parent type. In
+/// this example handlers are tried in the sequence:
+///
+/// \li <tt>ImplClass::VisitConstantArrayType(const ConstantArrayType*)</tt>
+/// \li <tt>ImplClass::VisitArrayType(const ArrayType*)</tt>
+/// \li <tt>ImplClass::VisitType(const Type*)</tt>
+/// \li <tt>TypeVisitor::VisitType(const Type*)</tt>
+///
+/// The first function of this sequence that is defined will handle object of
+/// type \c ConstantArrayType.
 template<typename ImplClass, typename RetTy=void>
 class TypeVisitor {
 public:
+
+  /// \brief Performs the operation associated with this visitor object.
   RetTy Visit(const Type *T) {
     // Top switch stmt: dispatch to VisitFooType for each FooType.
     switch (T->getTypeClass()) {
@@ -42,7 +83,8 @@ public:
 }
 #include "clang/AST/TypeNodes.def"
 
-  // Base case, ignore it. :)
+  /// \brief Method called if \c ImpClass doesn't provide specific handler
+  /// for some type class.
   RetTy VisitType(const Type*) { return RetTy(); }
 };
 
diff --git a/include/clang/AST/UnresolvedSet.h b/include/clang/AST/UnresolvedSet.h
index d26065e3745b..759af2537f75 100644
--- a/include/clang/AST/UnresolvedSet.h
+++ b/include/clang/AST/UnresolvedSet.h
@@ -51,6 +51,7 @@ public:
   typedef std::iterator_traits<IteratorTy>::iterator_category iterator_category;
 
   NamedDecl *getDecl() const { return ir->getDecl(); }
+  void setDecl(NamedDecl *ND) const { return ir->setDecl(ND); }
   AccessSpecifier getAccess() const { return ir->getAccess(); }
   void setAccess(AccessSpecifier AS) { ir->setAccess(AS); }
   DeclAccessPair getPair() const { return *ir; }
@@ -88,7 +89,7 @@ public:
   bool operator>(const UnresolvedSetIterator &o) const { return ir > o.ir; }
 };
 
-/// UnresolvedSet - A set of unresolved declarations.
+/// \brief A set of unresolved declarations.
 class UnresolvedSetImpl {
   typedef SmallVectorImpl<DeclAccessPair> DeclsTy;
 
@@ -139,15 +140,9 @@ public:
     I.ir->set(New, AS);
   }
 
-  void erase(unsigned I) {
-    decls()[I] = decls().back();
-    decls().pop_back();
-  }
+  void erase(unsigned I) { decls()[I] = decls().pop_back_val(); }
 
-  void erase(iterator I) {
-    *I.ir = decls().back();
-    decls().pop_back();
-  }
+  void erase(iterator I) { *I.ir = decls().pop_back_val(); }
 
   void setAccess(iterator I, AccessSpecifier AS) {
     I.ir->setAccess(AS);
@@ -177,7 +172,7 @@ private:
   }
 };
 
-/// A set of unresolved declarations 
+/// \brief A set of unresolved declarations.
 template <unsigned InlineCapacity> class UnresolvedSet :
     public UnresolvedSetImpl {
   SmallVector<DeclAccessPair, InlineCapacity> Decls;
diff --git a/include/clang/AST/VTTBuilder.h b/include/clang/AST/VTTBuilder.h
index f24bb3f16b86..727bf5109ad4 100644
--- a/include/clang/AST/VTTBuilder.h
+++ b/include/clang/AST/VTTBuilder.h
@@ -63,54 +63,50 @@ struct VTTComponent {
     : VTableIndex(VTableIndex), VTableBase(VTableBase) {}
 };
 
-/// VTT builder - Class for building VTT layout information.
+/// \brief Class for building VTT layout information.
 class VTTBuilder {
   
   ASTContext &Ctx;
 
-  /// MostDerivedClass - The most derived class for which we're building this
-  /// vtable.
+  /// \brief The most derived class for which we're building this vtable.
   const CXXRecordDecl *MostDerivedClass;
 
   typedef SmallVector<VTTVTable, 64> VTTVTablesVectorTy;
   
-  /// VTTVTables - The VTT vtables.
+  /// \brief The VTT vtables.
   VTTVTablesVectorTy VTTVTables;
   
   typedef SmallVector<VTTComponent, 64> VTTComponentsVectorTy;
   
-  /// VTTComponents - The VTT components.
+  /// \brief The VTT components.
   VTTComponentsVectorTy VTTComponents;
   
-  /// MostDerivedClassLayout - the AST record layout of the most derived class.
+  /// \brief The AST record layout of the most derived class.
   const ASTRecordLayout &MostDerivedClassLayout;
 
   typedef llvm::SmallPtrSet<const CXXRecordDecl *, 4> VisitedVirtualBasesSetTy;
 
   typedef llvm::DenseMap<BaseSubobject, uint64_t> AddressPointsMapTy;
 
-  /// SubVTTIndicies - The sub-VTT indices for the bases of the most derived
-  /// class.
+  /// \brief The sub-VTT indices for the bases of the most derived class.
   llvm::DenseMap<BaseSubobject, uint64_t> SubVTTIndicies;
 
-  /// SecondaryVirtualPointerIndices - The secondary virtual pointer indices of
-  /// all subobjects of the most derived class.
+  /// \brief The secondary virtual pointer indices of all subobjects of
+  /// the most derived class.
   llvm::DenseMap<BaseSubobject, uint64_t> SecondaryVirtualPointerIndices;
 
-  /// GenerateDefinition - Whether the VTT builder should generate LLVM IR for
-  /// the VTT.
+  /// \brief Whether the VTT builder should generate LLVM IR for the VTT.
   bool GenerateDefinition;
 
-  /// AddVTablePointer - Add a vtable pointer to the VTT currently being built.
+  /// \brief Add a vtable pointer to the VTT currently being built.
   void AddVTablePointer(BaseSubobject Base, uint64_t VTableIndex,
                         const CXXRecordDecl *VTableClass);
                         
-  /// LayoutSecondaryVTTs - Lay out the secondary VTTs of the given base 
-  /// subobject.
+  /// \brief Lay out the secondary VTTs of the given base subobject.
   void LayoutSecondaryVTTs(BaseSubobject Base);
   
-  /// LayoutSecondaryVirtualPointers - Lay out the secondary virtual pointers
-  /// for the given base subobject.
+  /// \brief Lay out the secondary virtual pointers for the given base
+  /// subobject.
   ///
   /// \param BaseIsMorallyVirtual whether the base subobject is a virtual base
   /// or a direct or indirect base of a virtual base.
@@ -120,17 +116,17 @@ class VTTBuilder {
                                       const CXXRecordDecl *VTableClass,
                                       VisitedVirtualBasesSetTy &VBases);
   
-  /// LayoutSecondaryVirtualPointers - Lay out the secondary virtual pointers
-  /// for the given base subobject.
+  /// \brief Lay out the secondary virtual pointers for the given base
+  /// subobject.
   void LayoutSecondaryVirtualPointers(BaseSubobject Base, 
                                       uint64_t VTableIndex);
 
-  /// LayoutVirtualVTTs - Lay out the VTTs for the virtual base classes of the
-  /// given record decl.
+  /// \brief Lay out the VTTs for the virtual base classes of the given
+  /// record declaration.
   void LayoutVirtualVTTs(const CXXRecordDecl *RD,
                          VisitedVirtualBasesSetTy &VBases);
   
-  /// LayoutVTT - Will lay out the VTT for the given subobject, including any
+  /// \brief Lay out the VTT for the given subobject, including any
   /// secondary VTTs, secondary virtual pointers and virtual VTTs.
   void LayoutVTT(BaseSubobject Base, bool BaseIsVirtual);
   
@@ -138,23 +134,22 @@ public:
   VTTBuilder(ASTContext &Ctx, const CXXRecordDecl *MostDerivedClass,
              bool GenerateDefinition);
 
-  // getVTTComponents - Returns a reference to the VTT components.
+  // \brief Returns a reference to the VTT components.
   const VTTComponentsVectorTy &getVTTComponents() const {
     return VTTComponents;
   }
   
-  // getVTTVTables - Returns a reference to the VTT vtables.
+  // \brief Returns a reference to the VTT vtables.
   const VTTVTablesVectorTy &getVTTVTables() const {
     return VTTVTables;
   }
   
-  /// getSubVTTIndicies - Returns a reference to the sub-VTT indices.
+  /// \brief Returns a reference to the sub-VTT indices.
   const llvm::DenseMap<BaseSubobject, uint64_t> &getSubVTTIndicies() const {
     return SubVTTIndicies;
   }
   
-  /// getSecondaryVirtualPointerIndices - Returns a reference to the secondary
-  /// virtual pointer indices.
+  /// \brief Returns a reference to the secondary virtual pointer indices.
   const llvm::DenseMap<BaseSubobject, uint64_t> &
   getSecondaryVirtualPointerIndices() const {
     return SecondaryVirtualPointerIndices;
diff --git a/include/clang/AST/VTableBuilder.h b/include/clang/AST/VTableBuilder.h
index bcbe8754ea4a..4e451324d734 100644
--- a/include/clang/AST/VTableBuilder.h
+++ b/include/clang/AST/VTableBuilder.h
@@ -20,12 +20,13 @@
 #include "clang/AST/RecordLayout.h"
 #include "clang/Basic/ABI.h"
 #include "llvm/ADT/SetVector.h"
+#include "llvm/ADT/DenseSet.h"
 #include <utility>
 
 namespace clang {
   class CXXRecordDecl;
 
-/// VTableComponent - Represents a single component in a vtable.
+/// \brief Represents a single component in a vtable.
 class VTableComponent {
 public:
   enum Kind {
@@ -35,15 +36,17 @@ public:
     CK_RTTI,
     CK_FunctionPointer,
 
-    /// CK_CompleteDtorPointer - A pointer to the complete destructor.
+    /// \brief A pointer to the complete destructor.
     CK_CompleteDtorPointer,
 
-    /// CK_DeletingDtorPointer - A pointer to the deleting destructor.
+    /// \brief A pointer to the deleting destructor.
     CK_DeletingDtorPointer,
 
-    /// CK_UnusedFunctionPointer - In some cases, a vtable function pointer
-    /// will end up never being called. Such vtable function pointers are
-    /// represented as a CK_UnusedFunctionPointer.
+    /// \brief An entry that is never used.
+    ///
+    /// In some cases, a vtable function pointer will end up never being
+    /// called. Such vtable function pointers are represented as a
+    /// CK_UnusedFunctionPointer.
     CK_UnusedFunctionPointer
   };
 
@@ -94,7 +97,7 @@ public:
     return VTableComponent(I);
   }
 
-  /// getKind - Get the kind of this vtable component.
+  /// \brief Get the kind of this vtable component.
   Kind getKind() const {
     return (Kind)(Value & 0x7);
   }
@@ -189,7 +192,7 @@ private:
 
   /// The kind is stored in the lower 3 bits of the value. For offsets, we
   /// make use of the facts that classes can't be larger than 2^55 bytes,
-  /// so we store the offset in the lower part of the 61 bytes that remain.
+  /// so we store the offset in the lower part of the 61 bits that remain.
   /// (The reason that we're not simply using a PointerIntPair here is that we
   /// need the offsets to be 64-bit, even when on a 32-bit machine).
   int64_t Value;
@@ -198,7 +201,6 @@ private:
 class VTableLayout {
 public:
   typedef std::pair<uint64_t, ThunkInfo> VTableThunkTy;
-  typedef SmallVector<ThunkInfo, 1> ThunkInfoVectorTy;
 
   typedef const VTableComponent *vtable_component_iterator;
   typedef const VTableThunkTy *vtable_thunk_iterator;
@@ -208,11 +210,11 @@ private:
   uint64_t NumVTableComponents;
   llvm::OwningArrayPtr<VTableComponent> VTableComponents;
 
-  /// VTableThunks - Contains thunks needed by vtables.
+  /// \brief Contains thunks needed by vtables, sorted by indices.
   uint64_t NumVTableThunks;
   llvm::OwningArrayPtr<VTableThunkTy> VTableThunks;
 
-  /// Address points - Address points for all vtables.
+  /// \brief Address points for all vtables.
   AddressPointsMapTy AddressPoints;
 
   bool IsMicrosoftABI;
@@ -231,23 +233,21 @@ public:
   }
 
   vtable_component_iterator vtable_component_begin() const {
-   return VTableComponents.get();
+    return VTableComponents.get();
   }
 
   vtable_component_iterator vtable_component_end() const {
-   return VTableComponents.get()+NumVTableComponents;
+    return VTableComponents.get() + NumVTableComponents;
   }
 
-  uint64_t getNumVTableThunks() const {
-    return NumVTableThunks;
-  }
+  uint64_t getNumVTableThunks() const { return NumVTableThunks; }
 
   vtable_thunk_iterator vtable_thunk_begin() const {
-   return VTableThunks.get();
+    return VTableThunks.get();
   }
 
   vtable_thunk_iterator vtable_thunk_end() const {
-   return VTableThunks.get()+NumVTableThunks;
+    return VTableThunks.get() + NumVTableThunks;
   }
 
   uint64_t getAddressPoint(BaseSubobject Base) const {
@@ -266,19 +266,45 @@ public:
   }
 };
 
-class VTableContext {
-  ASTContext &Context;
-
+class VTableContextBase {
 public:
-  typedef SmallVector<std::pair<uint64_t, ThunkInfo>, 1>
-    VTableThunksTy;
   typedef SmallVector<ThunkInfo, 1> ThunkInfoVectorTy;
 
+protected:
+  typedef llvm::DenseMap<const CXXMethodDecl *, ThunkInfoVectorTy> ThunksMapTy;
+
+  /// \brief Contains all thunks that a given method decl will need.
+  ThunksMapTy Thunks;
+
+  /// Compute and store all vtable related information (vtable layout, vbase
+  /// offset offsets, thunks etc) for the given record decl.
+  virtual void computeVTableRelatedInformation(const CXXRecordDecl *RD) = 0;
+
+  virtual ~VTableContextBase() {}
+
+public:
+  virtual const ThunkInfoVectorTy *getThunkInfo(GlobalDecl GD) {
+    const CXXMethodDecl *MD = cast<CXXMethodDecl>(GD.getDecl()->getCanonicalDecl());
+    computeVTableRelatedInformation(MD->getParent());
+
+    // This assumes that all the destructors present in the vtable
+    // use exactly the same set of thunks.
+    ThunksMapTy::const_iterator I = Thunks.find(MD);
+    if (I == Thunks.end()) {
+      // We did not find a thunk for this method.
+      return 0;
+    }
+
+    return &I->second;
+  }
+};
+
+class ItaniumVTableContext : public VTableContextBase {
 private:
   bool IsMicrosoftABI;
 
-  /// MethodVTableIndices - Contains the index (relative to the vtable address
-  /// point) where the function pointer for a virtual function is stored.
+  /// \brief Contains the index (relative to the vtable address point)
+  /// where the function pointer for a virtual function is stored.
   typedef llvm::DenseMap<GlobalDecl, int64_t> MethodVTableIndicesTy;
   MethodVTableIndicesTy MethodVTableIndices;
 
@@ -286,49 +312,25 @@ private:
     VTableLayoutMapTy;
   VTableLayoutMapTy VTableLayouts;
 
-  /// NumVirtualFunctionPointers - Contains the number of virtual function
-  /// pointers in the vtable for a given record decl.
-  llvm::DenseMap<const CXXRecordDecl *, uint64_t> NumVirtualFunctionPointers;
-
   typedef std::pair<const CXXRecordDecl *,
                     const CXXRecordDecl *> ClassPairTy;
 
-  /// VirtualBaseClassOffsetOffsets - Contains the vtable offset (relative to
-  /// the address point) in chars where the offsets for virtual bases of a class
-  /// are stored.
+  /// \brief vtable offsets for offsets of virtual bases of a class.
+  ///
+  /// Contains the vtable offset (relative to the address point) in chars
+  /// where the offsets for virtual bases of a class are stored.
   typedef llvm::DenseMap<ClassPairTy, CharUnits>
     VirtualBaseClassOffsetOffsetsMapTy;
   VirtualBaseClassOffsetOffsetsMapTy VirtualBaseClassOffsetOffsets;
 
-  typedef llvm::DenseMap<const CXXMethodDecl *, ThunkInfoVectorTy> ThunksMapTy;
-
-  /// Thunks - Contains all thunks that a given method decl will need.
-  ThunksMapTy Thunks;
-
-  void ComputeMethodVTableIndices(const CXXRecordDecl *RD);
-
-  /// ComputeVTableRelatedInformation - Compute and store all vtable related
-  /// information (vtable layout, vbase offset offsets, thunks etc) for the
-  /// given record decl.
-  void ComputeVTableRelatedInformation(const CXXRecordDecl *RD);
-
-  /// ErrorUnsupported - Print out an error that the v-table layout code
-  /// doesn't support the particular C++ feature yet.
-  void ErrorUnsupported(StringRef Feature, SourceLocation Location);
+  void computeVTableRelatedInformation(const CXXRecordDecl *RD);
 
 public:
-  VTableContext(ASTContext &Context);
-  ~VTableContext();
-
-  bool isMicrosoftABI() const {
-    // FIXME: Currently, this method is only used in the VTableContext and
-    // VTableBuilder code which is ABI-specific. Probably we can remove it
-    // when we add a layer of abstraction for vtable generation.
-    return IsMicrosoftABI;
-  }
+  ItaniumVTableContext(ASTContext &Context);
+  ~ItaniumVTableContext();
 
   const VTableLayout &getVTableLayout(const CXXRecordDecl *RD) {
-    ComputeVTableRelatedInformation(RD);
+    computeVTableRelatedInformation(RD);
     assert(VTableLayouts.count(RD) && "No layout for this record decl!");
 
     return *VTableLayouts[RD];
@@ -340,36 +342,177 @@ public:
                                  bool MostDerivedClassIsVirtual,
                                  const CXXRecordDecl *LayoutClass);
 
-  const ThunkInfoVectorTy *getThunkInfo(const CXXMethodDecl *MD) {
-    ComputeVTableRelatedInformation(MD->getParent());
+  /// \brief Locate a virtual function in the vtable.
+  ///
+  /// Return the index (relative to the vtable address point) where the
+  /// function pointer for the given virtual function is stored.
+  uint64_t getMethodVTableIndex(GlobalDecl GD);
 
-    ThunksMapTy::const_iterator I = Thunks.find(MD);
-    if (I == Thunks.end()) {
-      // We did not find a thunk for this method.
-      return 0;
-    }
+  /// Return the offset in chars (relative to the vtable address point) where
+  /// the offset of the virtual base that contains the given base is stored,
+  /// otherwise, if no virtual base contains the given class, return 0. 
+  ///
+  /// Base must be a virtual base class or an unambiguous base.
+  CharUnits getVirtualBaseOffsetOffset(const CXXRecordDecl *RD,
+                                       const CXXRecordDecl *VBase);
+};
 
-    return &I->second;
+struct VFPtrInfo {
+  typedef SmallVector<const CXXRecordDecl *, 1> BasePath;
+
+  // Don't pass the PathToMangle as it should be calculated later.
+  VFPtrInfo(CharUnits VFPtrOffset, const BasePath &PathToBaseWithVFPtr)
+      : VBTableIndex(0), LastVBase(0), VFPtrOffset(VFPtrOffset),
+        PathToBaseWithVFPtr(PathToBaseWithVFPtr), VFPtrFullOffset(VFPtrOffset) {
   }
 
-  /// getNumVirtualFunctionPointers - Return the number of virtual function
-  /// pointers in the vtable for a given record decl.
-  uint64_t getNumVirtualFunctionPointers(const CXXRecordDecl *RD);
+  // Don't pass the PathToMangle as it should be calculated later.
+  VFPtrInfo(uint64_t VBTableIndex, const CXXRecordDecl *LastVBase,
+            CharUnits VFPtrOffset, const BasePath &PathToBaseWithVFPtr,
+            CharUnits VFPtrFullOffset)
+      : VBTableIndex(VBTableIndex), LastVBase(LastVBase),
+        VFPtrOffset(VFPtrOffset), PathToBaseWithVFPtr(PathToBaseWithVFPtr),
+        VFPtrFullOffset(VFPtrFullOffset) {
+    assert(VBTableIndex && "The full constructor should only be used "
+                           "for vfptrs in virtual bases");
+    assert(LastVBase);
+  }
 
-  /// getMethodVTableIndex - Return the index (relative to the vtable address
-  /// point) where the function pointer for the given virtual function is
-  /// stored.
-  uint64_t getMethodVTableIndex(GlobalDecl GD);
+  /// If nonzero, holds the vbtable index of the virtual base with the vfptr.
+  uint64_t VBTableIndex;
 
-  /// getVirtualBaseOffsetOffset - Return the offset in chars (relative to the
-  /// vtable address point) where the offset of the virtual base that contains
-  /// the given base is stored, otherwise, if no virtual base contains the given
-  /// class, return 0.  Base must be a virtual base class or an unambigious
-  /// base.
-  CharUnits getVirtualBaseOffsetOffset(const CXXRecordDecl *RD,
-                                       const CXXRecordDecl *VBase);
+  /// Stores the last vbase on the path from the complete type to the vfptr.
+  const CXXRecordDecl *LastVBase;
+
+  /// This is the offset of the vfptr from the start of the last vbase,
+  /// or the complete type if there are no virtual bases.
+  CharUnits VFPtrOffset;
+
+  /// This holds the base classes path from the complete type to the first base
+  /// with the given vfptr offset, in the base-to-derived order.
+  BasePath PathToBaseWithVFPtr;
+
+  /// This holds the subset of records that need to be mangled into the vftable
+  /// symbol name in order to get a unique name, in the derived-to-base order.
+  BasePath PathToMangle;
+
+  /// This is the full offset of the vfptr from the start of the complete type.
+  CharUnits VFPtrFullOffset;
 };
 
+class MicrosoftVTableContext : public VTableContextBase {
+public:
+  struct MethodVFTableLocation {
+    /// If nonzero, holds the vbtable index of the virtual base with the vfptr.
+    uint64_t VBTableIndex;
+
+    /// If nonnull, holds the last vbase which contains the vfptr that the
+    /// method definition is adjusted to.
+    const CXXRecordDecl *VBase;
+
+    /// This is the offset of the vfptr from the start of the last vbase, or the
+    /// complete type if there are no virtual bases.
+    CharUnits VFPtrOffset;
+
+    /// Method's index in the vftable.
+    uint64_t Index;
+
+    MethodVFTableLocation()
+        : VBTableIndex(0), VBase(0), VFPtrOffset(CharUnits::Zero()),
+          Index(0) {}
+
+    MethodVFTableLocation(uint64_t VBTableIndex, const CXXRecordDecl *VBase,
+                          CharUnits VFPtrOffset, uint64_t Index)
+        : VBTableIndex(VBTableIndex), VBase(VBase),
+          VFPtrOffset(VFPtrOffset), Index(Index) {}
+
+    bool operator<(const MethodVFTableLocation &other) const {
+      if (VBTableIndex != other.VBTableIndex) {
+        assert(VBase != other.VBase);
+        return VBTableIndex < other.VBTableIndex;
+      }
+      if (VFPtrOffset != other.VFPtrOffset)
+        return VFPtrOffset < other.VFPtrOffset;
+      if (Index != other.Index)
+        return Index < other.Index;
+      return false;
+    }
+  };
+
+  typedef SmallVector<VFPtrInfo, 1> VFPtrListTy;
+
+private:
+  ASTContext &Context;
+
+  typedef llvm::DenseMap<GlobalDecl, MethodVFTableLocation>
+    MethodVFTableLocationsTy;
+  MethodVFTableLocationsTy MethodVFTableLocations;
+
+  typedef llvm::DenseMap<const CXXRecordDecl *, VFPtrListTy>
+    VFPtrLocationsMapTy;
+  VFPtrLocationsMapTy VFPtrLocations;
+
+  typedef std::pair<const CXXRecordDecl *, CharUnits> VFTableIdTy;
+  typedef llvm::DenseMap<VFTableIdTy, const VTableLayout *> VFTableLayoutMapTy;
+  VFTableLayoutMapTy VFTableLayouts;
+
+  typedef llvm::SmallSetVector<const CXXRecordDecl *, 8> BasesSetVectorTy;
+  void enumerateVFPtrs(const CXXRecordDecl *MostDerivedClass,
+                       const ASTRecordLayout &MostDerivedClassLayout,
+                       BaseSubobject Base, const CXXRecordDecl *LastVBase,
+                       const VFPtrInfo::BasePath &PathFromCompleteClass,
+                       BasesSetVectorTy &VisitedVBases,
+                       MicrosoftVTableContext::VFPtrListTy &Result);
+
+  void enumerateVFPtrs(const CXXRecordDecl *ForClass,
+                       MicrosoftVTableContext::VFPtrListTy &Result);
+
+  void computeVTableRelatedInformation(const CXXRecordDecl *RD);
+
+  void dumpMethodLocations(const CXXRecordDecl *RD,
+                           const MethodVFTableLocationsTy &NewMethods,
+                           raw_ostream &);
+
+  typedef std::pair<const CXXRecordDecl *, const CXXRecordDecl *> ClassPairTy;
+  typedef llvm::DenseMap<ClassPairTy, unsigned> VBTableIndicesTy;
+  VBTableIndicesTy VBTableIndices;
+  llvm::DenseSet<const CXXRecordDecl *> ComputedVBTableIndices;
+
+  void computeVBTableRelatedInformation(const CXXRecordDecl *RD);
+
+public:
+  MicrosoftVTableContext(ASTContext &Context) : Context(Context) {}
+
+  ~MicrosoftVTableContext() { llvm::DeleteContainerSeconds(VFTableLayouts); }
+
+  const VFPtrListTy &getVFPtrOffsets(const CXXRecordDecl *RD);
+
+  const VTableLayout &getVFTableLayout(const CXXRecordDecl *RD,
+                                       CharUnits VFPtrOffset);
+
+  const MethodVFTableLocation &getMethodVFTableLocation(GlobalDecl GD);
+
+  const ThunkInfoVectorTy *getThunkInfo(GlobalDecl GD) {
+    // Complete destructors don't have a slot in a vftable, so no thunks needed.
+    if (isa<CXXDestructorDecl>(GD.getDecl()) &&
+        GD.getDtorType() == Dtor_Complete)
+      return 0;
+    return VTableContextBase::getThunkInfo(GD);
+  }
+
+  /// \brief Returns the index of VBase in the vbtable of Derived.
+  /// VBase must be a morally virtual base of Derived.
+  /// The vbtable is an array of i32 offsets.  The first entry is a self entry,
+  /// and the rest are offsets from the vbptr to virtual bases.
+  unsigned getVBTableIndex(const CXXRecordDecl *Derived,
+                           const CXXRecordDecl *VBase) {
+    computeVBTableRelatedInformation(Derived);
+    ClassPairTy Pair(Derived, VBase);
+    assert(VBTableIndices.count(Pair) == 1 &&
+           "VBase must be a vbase of Derived");
+    return VBTableIndices[Pair];
+  }
+};
 }
 
 #endif
diff --git a/include/clang/ASTMatchers/ASTMatchFinder.h b/include/clang/ASTMatchers/ASTMatchFinder.h
index 870a39b39111..db0a83d72262 100644
--- a/include/clang/ASTMatchers/ASTMatchFinder.h
+++ b/include/clang/ASTMatchers/ASTMatchFinder.h
@@ -97,6 +97,11 @@ public:
     ///
     /// Optionally override to do per translation unit tasks.
     virtual void onStartOfTranslationUnit() {}
+
+    /// \brief Called at the end of each translation unit.
+    ///
+    /// Optionally override to do per translation unit tasks.
+    virtual void onEndOfTranslationUnit() {}
   };
 
   /// \brief Called when parsing is finished. Intended for testing only.
@@ -131,6 +136,17 @@ public:
                   MatchCallback *Action);
   /// @}
 
+  /// \brief Adds a matcher to execute when running over the AST.
+  ///
+  /// This is similar to \c addMatcher(), but it uses the dynamic interface. It
+  /// is more flexible, but the lost type information enables a caller to pass
+  /// a matcher that cannot match anything.
+  ///
+  /// \returns \c true if the matcher is a valid top-level matcher, \c false
+  ///   otherwise.
+  bool addDynamicMatcher(const internal::DynTypedMatcher &NodeMatch,
+                         MatchCallback *Action);
+
   /// \brief Creates a clang ASTConsumer that finds all matches.
   clang::ASTConsumer *newASTConsumer();
 
@@ -147,6 +163,9 @@ public:
              ASTContext &Context);
   /// @}
 
+  /// \brief Finds all matches in the given AST.
+  void matchAST(ASTContext &Context);
+
   /// \brief Registers a callback to notify the end of parsing.
   ///
   /// The provided closure is called after parsing is done, before the AST is
@@ -157,7 +176,7 @@ public:
 private:
   /// \brief For each \c DynTypedMatcher a \c MatchCallback that will be called
   /// when it matches.
-  std::vector<std::pair<const internal::DynTypedMatcher*, MatchCallback*> >
+  std::vector<std::pair<internal::DynTypedMatcher, MatchCallback *> >
     MatcherCallbackPairs;
 
   /// \brief Called when parsing is done.
diff --git a/include/clang/ASTMatchers/ASTMatchers.h b/include/clang/ASTMatchers/ASTMatchers.h
index ab62dd0c3e81..0a3157dde817 100644
--- a/include/clang/ASTMatchers/ASTMatchers.h
+++ b/include/clang/ASTMatchers/ASTMatchers.h
@@ -45,6 +45,7 @@
 #ifndef LLVM_CLANG_AST_MATCHERS_AST_MATCHERS_H
 #define LLVM_CLANG_AST_MATCHERS_AST_MATCHERS_H
 
+#include "clang/AST/DeclFriend.h"
 #include "clang/AST/DeclTemplate.h"
 #include "clang/ASTMatchers/ASTMatchersInternal.h"
 #include "clang/ASTMatchers/ASTMatchersMacros.h"
@@ -85,6 +86,16 @@ public:
   }
   /// @}
 
+  /// \brief Type of mapping from binding identifiers to bound nodes. This type
+  /// is an associative container with a key type of \c std::string and a value
+  /// type of \c clang::ast_type_traits::DynTypedNode
+  typedef internal::BoundNodesMap::IDToNodeMap IDToNodeMap;
+
+  /// \brief Retrieve mapping from binding identifiers to bound nodes.
+  const IDToNodeMap &getMap() const {
+    return MyBoundNodes.getMap();
+  }
+
 private:
   /// \brief Create BoundNodes from a pre-filled map of bindings.
   BoundNodes(internal::BoundNodesMap &MyBoundNodes)
@@ -92,7 +103,7 @@ private:
 
   internal::BoundNodesMap MyBoundNodes;
 
-  friend class internal::BoundNodesTree;
+  friend class internal::BoundNodesTreeBuilder;
 };
 
 /// \brief If the provided matcher matches a node, binds the node to \c ID.
@@ -204,6 +215,28 @@ const internal::VariadicDynCastAllOfMatcher<
   Decl,
   ClassTemplateSpecializationDecl> classTemplateSpecializationDecl;
 
+/// \brief Matches declarator declarations (field, variable, function
+/// and non-type template parameter declarations).
+///
+/// Given
+/// \code
+///   class X { int y; };
+/// \endcode
+/// declaratorDecl()
+///   matches \c int y.
+const internal::VariadicDynCastAllOfMatcher<Decl, DeclaratorDecl>
+    declaratorDecl;
+
+/// \brief Matches parameter variable declarations.
+///
+/// Given
+/// \code
+///   void f(int x);
+/// \endcode
+/// parmVarDecl()
+///   matches \c int x.
+const internal::VariadicDynCastAllOfMatcher<Decl, ParmVarDecl> parmVarDecl;
+
 /// \brief Matches C++ access specifier declarations.
 ///
 /// Given
@@ -219,6 +252,17 @@ const internal::VariadicDynCastAllOfMatcher<
   Decl,
   AccessSpecDecl> accessSpecDecl;
 
+/// \brief Matches constructor initializers.
+///
+/// Examples matches \c i(42).
+/// \code
+///   class C {
+///     C() : i(42) {}
+///     int i;
+///   };
+/// \endcode
+const internal::VariadicAllOfMatcher<CXXCtorInitializer> ctorInitializer;
+
 /// \brief Matches public C++ declarations.
 ///
 /// Given
@@ -281,12 +325,9 @@ AST_MATCHER(Decl, isPrivate) {
 ///   matches the specialization \c A<int>
 AST_MATCHER_P(ClassTemplateSpecializationDecl, hasAnyTemplateArgument,
               internal::Matcher<TemplateArgument>, InnerMatcher) {
-  const TemplateArgumentList &List = Node.getTemplateArgs();
-  for (unsigned i = 0; i < List.size(); ++i) {
-    if (InnerMatcher.matches(List.get(i), Finder, Builder))
-      return true;
-  }
-  return false;
+  llvm::ArrayRef<TemplateArgument> List = Node.getTemplateArgs().asArray();
+  return matchesFirstInRange(InnerMatcher, List.begin(), List.end(), Finder,
+                             Builder);
 }
 
 /// \brief Matches expressions that match InnerMatcher after any implicit casts
@@ -520,6 +561,16 @@ const internal::VariadicDynCastAllOfMatcher<
   Decl,
   FunctionTemplateDecl> functionTemplateDecl;
 
+/// \brief Matches friend declarations.
+///
+/// Given
+/// \code
+///   class X { friend void foo(); };
+/// \endcode
+/// friendDecl()
+///   matches 'friend void foo()'.
+const internal::VariadicDynCastAllOfMatcher<Decl, FriendDecl> friendDecl;
+
 /// \brief Matches statements.
 ///
 /// Given
@@ -607,6 +658,21 @@ const internal::VariadicDynCastAllOfMatcher<Stmt, InitListExpr> initListExpr;
 ///   matches \code using X::x \endcode
 const internal::VariadicDynCastAllOfMatcher<Decl, UsingDecl> usingDecl;
 
+/// \brief Matches unresolved using value declarations.
+///
+/// Given
+/// \code
+///   template<typename X>
+///   class C : private X {
+///     using X::x;
+///   };
+/// \endcode
+/// unresolvedUsingValueDecl()
+///   matches \code using X::x \endcode
+const internal::VariadicDynCastAllOfMatcher<
+  Decl,
+  UnresolvedUsingValueDecl> unresolvedUsingValueDecl;
+
 /// \brief Matches constructor call expressions (including implicit ones).
 ///
 /// Example matches string(ptr, n) and ptr within arguments of f
@@ -621,6 +687,18 @@ const internal::VariadicDynCastAllOfMatcher<
   Stmt,
   CXXConstructExpr> constructExpr;
 
+/// \brief Matches unresolved constructor call expressions.
+///
+/// Example matches T(t) in return statement of f
+///     (matcher = unresolvedConstructExpr())
+/// \code
+///   template <typename T>
+///   void f(const T& t) { return T(t); }
+/// \endcode
+const internal::VariadicDynCastAllOfMatcher<
+  Stmt,
+  CXXUnresolvedConstructExpr> unresolvedConstructExpr;
+
 /// \brief Matches implicit and explicit this expressions.
 ///
 /// Example matches the implicit this expression in "return i".
@@ -894,6 +972,26 @@ const internal::VariadicDynCastAllOfMatcher<Stmt, SwitchStmt> switchStmt;
 ///   matches 'case 42: break;' and 'default: break;'.
 const internal::VariadicDynCastAllOfMatcher<Stmt, SwitchCase> switchCase;
 
+/// \brief Matches case statements inside switch statements.
+///
+/// Given
+/// \code
+///   switch(a) { case 42: break; default: break; }
+/// \endcode
+/// caseStmt()
+///   matches 'case 42: break;'.
+const internal::VariadicDynCastAllOfMatcher<Stmt, CaseStmt> caseStmt;
+
+/// \brief Matches default statements inside switch statements.
+///
+/// Given
+/// \code
+///   switch(a) { case 42: break; default: break; }
+/// \endcode
+/// defaultStmt()
+///   matches 'default: break;'.
+const internal::VariadicDynCastAllOfMatcher<Stmt, DefaultStmt> defaultStmt;
+
 /// \brief Matches compound statements.
 ///
 /// Example matches '{}' and '{{}}'in 'for (;;) {{}}'
@@ -981,15 +1079,25 @@ const internal::VariadicDynCastAllOfMatcher<
   Stmt,
   CharacterLiteral> characterLiteral;
 
-/// \brief Matches integer literals of all sizes / encodings.
-///
-/// Not matching character-encoded integers such as L'a'.
+/// \brief Matches integer literals of all sizes / encodings, e.g.
+/// 1, 1L, 0x1 and 1U.
 ///
-/// Example matches 1, 1L, 0x1, 1U
+/// Does not match character-encoded integers such as L'a'.
 const internal::VariadicDynCastAllOfMatcher<
   Stmt,
   IntegerLiteral> integerLiteral;
 
+/// \brief Matches float literals of all sizes / encodings, e.g.
+/// 1.0, 1.0f, 1.0L and 1e10.
+///
+/// Does not match implicit conversions such as
+/// \code
+///   float a = 10;
+/// \endcode
+const internal::VariadicDynCastAllOfMatcher<
+  Stmt,
+  FloatingLiteral> floatLiteral;
+
 /// \brief Matches user defined literal operator call.
 ///
 /// Example match: "foo"_suffix
@@ -1171,6 +1279,16 @@ const internal::VariadicDynCastAllOfMatcher<
   Stmt,
   CXXFunctionalCastExpr> functionalCastExpr;
 
+/// \brief Matches functional cast expressions having N != 1 arguments
+///
+/// Example: Matches Foo(bar, bar)
+/// \code
+///   Foo h = Foo(bar, bar);
+/// \endcode
+const internal::VariadicDynCastAllOfMatcher<
+  Stmt,
+  CXXTemporaryObjectExpr> temporaryObjectExpr;
+
 /// \brief Matches \c QualTypes in the clang AST.
 const internal::VariadicAllOfMatcher<QualType> qualType;
 
@@ -1199,93 +1317,23 @@ const internal::VariadicAllOfMatcher<TypeLoc> typeLoc;
 /// \c b.
 ///
 /// Usable as: Any Matcher
-template <typename M1, typename M2>
-internal::PolymorphicMatcherWithParam2<internal::EachOfMatcher, M1, M2>
-eachOf(const M1 &P1, const M2 &P2) {
-  return internal::PolymorphicMatcherWithParam2<internal::EachOfMatcher, M1,
-                                                M2>(P1, P2);
-}
-
-/// \brief Various overloads for the anyOf matcher.
-/// @{
+const internal::VariadicOperatorMatcherFunc eachOf = {
+  internal::EachOfVariadicOperator
+};
 
 /// \brief Matches if any of the given matchers matches.
 ///
 /// Usable as: Any Matcher
-template<typename M1, typename M2>
-internal::PolymorphicMatcherWithParam2<internal::AnyOfMatcher, M1, M2>
-anyOf(const M1 &P1, const M2 &P2) {
-  return internal::PolymorphicMatcherWithParam2<internal::AnyOfMatcher,
-                                                M1, M2 >(P1, P2);
-}
-template<typename M1, typename M2, typename M3>
-internal::PolymorphicMatcherWithParam2<internal::AnyOfMatcher, M1,
-    internal::PolymorphicMatcherWithParam2<internal::AnyOfMatcher, M2, M3> >
-anyOf(const M1 &P1, const M2 &P2, const M3 &P3) {
-  return anyOf(P1, anyOf(P2, P3));
-}
-template<typename M1, typename M2, typename M3, typename M4>
-internal::PolymorphicMatcherWithParam2<internal::AnyOfMatcher, M1,
-    internal::PolymorphicMatcherWithParam2<internal::AnyOfMatcher, M2,
-        internal::PolymorphicMatcherWithParam2<internal::AnyOfMatcher,
-                                               M3, M4> > >
-anyOf(const M1 &P1, const M2 &P2, const M3 &P3, const M4 &P4) {
-  return anyOf(P1, anyOf(P2, anyOf(P3, P4)));
-}
-template<typename M1, typename M2, typename M3, typename M4, typename M5>
-internal::PolymorphicMatcherWithParam2<internal::AnyOfMatcher, M1,
-    internal::PolymorphicMatcherWithParam2<internal::AnyOfMatcher, M2,
-        internal::PolymorphicMatcherWithParam2<internal::AnyOfMatcher, M3,
-            internal::PolymorphicMatcherWithParam2<internal::AnyOfMatcher,
-                                                   M4, M5> > > >
-anyOf(const M1 &P1, const M2 &P2, const M3 &P3, const M4 &P4, const M5 &P5) {
-  return anyOf(P1, anyOf(P2, anyOf(P3, anyOf(P4, P5))));
-}
-
-/// @}
-
-/// \brief Various overloads for the allOf matcher.
-/// @{
+const internal::VariadicOperatorMatcherFunc anyOf = {
+  internal::AnyOfVariadicOperator
+};
 
 /// \brief Matches if all given matchers match.
 ///
 /// Usable as: Any Matcher
-template <typename M1, typename M2>
-internal::PolymorphicMatcherWithParam2<internal::AllOfMatcher, M1, M2>
-allOf(const M1 &P1, const M2 &P2) {
-  return internal::PolymorphicMatcherWithParam2<internal::AllOfMatcher, M1, M2>(
-      P1, P2);
-}
-template <typename M1, typename M2, typename M3>
-internal::PolymorphicMatcherWithParam2<
-    internal::AllOfMatcher, M1,
-    internal::PolymorphicMatcherWithParam2<internal::AllOfMatcher, M2, M3> >
-allOf(const M1 &P1, const M2 &P2, const M3 &P3) {
-  return allOf(P1, allOf(P2, P3));
-}
-template <typename M1, typename M2, typename M3, typename M4>
-internal::PolymorphicMatcherWithParam2<
-    internal::AllOfMatcher, M1,
-    internal::PolymorphicMatcherWithParam2<
-        internal::AllOfMatcher, M2, internal::PolymorphicMatcherWithParam2<
-                                        internal::AllOfMatcher, M3, M4> > >
-allOf(const M1 &P1, const M2 &P2, const M3 &P3, const M4 &P4) {
-  return allOf(P1, allOf(P2, P3, P4));
-}
-template <typename M1, typename M2, typename M3, typename M4, typename M5>
-internal::PolymorphicMatcherWithParam2<
-    internal::AllOfMatcher, M1,
-    internal::PolymorphicMatcherWithParam2<
-        internal::AllOfMatcher, M2,
-        internal::PolymorphicMatcherWithParam2<
-            internal::AllOfMatcher, M3,
-            internal::PolymorphicMatcherWithParam2<internal::AllOfMatcher, M4,
-                                                   M5> > > >
-allOf(const M1 &P1, const M2 &P2, const M3 &P3, const M4 &P4, const M5 &P5) {
-  return allOf(P1, allOf(P2, P3, P4, P5));
-}
-
-/// @}
+const internal::VariadicOperatorMatcherFunc allOf = {
+  internal::AllOfVariadicOperator
+};
 
 /// \brief Matches sizeof (C99), alignof (C++11) and vec_step (OpenCL)
 ///
@@ -1412,10 +1460,13 @@ AST_MATCHER_P(NamedDecl, matchesName, std::string, RegExp) {
 ///
 /// Usable as: Matcher<CXXOperatorCallExpr>, Matcher<CXXMethodDecl>
 inline internal::PolymorphicMatcherWithParam1<
-    internal::HasOverloadedOperatorNameMatcher, StringRef>
+    internal::HasOverloadedOperatorNameMatcher, StringRef,
+    AST_POLYMORPHIC_SUPPORTED_TYPES_2(CXXOperatorCallExpr, CXXMethodDecl)>
 hasOverloadedOperatorName(const StringRef Name) {
   return internal::PolymorphicMatcherWithParam1<
-      internal::HasOverloadedOperatorNameMatcher, StringRef>(Name);
+      internal::HasOverloadedOperatorNameMatcher, StringRef,
+      AST_POLYMORPHIC_SUPPORTED_TYPES_2(CXXOperatorCallExpr, CXXMethodDecl)>(
+      Name);
 }
 
 /// \brief Matches C++ classes that are directly or indirectly derived from
@@ -1445,24 +1496,25 @@ AST_MATCHER_P(CXXRecordDecl, isDerivedFrom,
 }
 
 /// \brief Overloaded method as shortcut for \c isDerivedFrom(hasName(...)).
-inline internal::Matcher<CXXRecordDecl> isDerivedFrom(StringRef BaseName) {
+AST_MATCHER_P_OVERLOAD(CXXRecordDecl, isDerivedFrom, StringRef, BaseName, 1) {
   assert(!BaseName.empty());
-  return isDerivedFrom(hasName(BaseName));
+  return isDerivedFrom(hasName(BaseName)).matches(Node, Finder, Builder);
 }
 
 /// \brief Similar to \c isDerivedFrom(), but also matches classes that directly
 /// match \c Base.
-inline internal::Matcher<CXXRecordDecl> isSameOrDerivedFrom(
-    internal::Matcher<NamedDecl> Base) {
-  return anyOf(Base, isDerivedFrom(Base));
+AST_MATCHER_P_OVERLOAD(CXXRecordDecl, isSameOrDerivedFrom,
+                       internal::Matcher<NamedDecl>, Base, 0) {
+  return Matcher<CXXRecordDecl>(anyOf(Base, isDerivedFrom(Base)))
+      .matches(Node, Finder, Builder);
 }
 
 /// \brief Overloaded method as shortcut for
 /// \c isSameOrDerivedFrom(hasName(...)).
-inline internal::Matcher<CXXRecordDecl> isSameOrDerivedFrom(
-    StringRef BaseName) {
+AST_MATCHER_P_OVERLOAD(CXXRecordDecl, isSameOrDerivedFrom, StringRef, BaseName,
+                       1) {
   assert(!BaseName.empty());
-  return isSameOrDerivedFrom(hasName(BaseName));
+  return isSameOrDerivedFrom(hasName(BaseName)).matches(Node, Finder, Builder);
 }
 
 /// \brief Matches the first method of a class or struct that satisfies \c
@@ -1478,12 +1530,8 @@ inline internal::Matcher<CXXRecordDecl> isSameOrDerivedFrom(
 /// but not \c B.
 AST_MATCHER_P(CXXRecordDecl, hasMethod, internal::Matcher<CXXMethodDecl>,
               InnerMatcher) {
-  for (CXXRecordDecl::method_iterator I = Node.method_begin(),
-                                      E = Node.method_end();
-       I != E; ++I)
-    if (InnerMatcher.matches(**I, Finder, Builder))
-      return true;
-  return false;
+  return matchesFirstInPointerRange(InnerMatcher, Node.method_begin(),
+                                    Node.method_end(), Finder, Builder);
 }
 
 /// \brief Matches AST nodes that have child AST nodes that match the
@@ -1499,12 +1547,8 @@ AST_MATCHER_P(CXXRecordDecl, hasMethod, internal::Matcher<CXXMethodDecl>,
 /// ChildT must be an AST base type.
 ///
 /// Usable as: Any Matcher
-template <typename ChildT>
-internal::ArgumentAdaptingMatcher<internal::HasMatcher, ChildT> has(
-    const internal::Matcher<ChildT> &ChildMatcher) {
-  return internal::ArgumentAdaptingMatcher<internal::HasMatcher,
-                                           ChildT>(ChildMatcher);
-}
+const internal::ArgumentAdaptingMatcherFunc<internal::HasMatcher>
+LLVM_ATTRIBUTE_UNUSED has = {};
 
 /// \brief Matches AST nodes that have descendant AST nodes that match the
 /// provided matcher.
@@ -1520,13 +1564,8 @@ internal::ArgumentAdaptingMatcher<internal::HasMatcher, ChildT> has(
 /// DescendantT must be an AST base type.
 ///
 /// Usable as: Any Matcher
-template <typename DescendantT>
-internal::ArgumentAdaptingMatcher<internal::HasDescendantMatcher, DescendantT>
-hasDescendant(const internal::Matcher<DescendantT> &DescendantMatcher) {
-  return internal::ArgumentAdaptingMatcher<
-    internal::HasDescendantMatcher,
-    DescendantT>(DescendantMatcher);
-}
+const internal::ArgumentAdaptingMatcherFunc<internal::HasDescendantMatcher>
+LLVM_ATTRIBUTE_UNUSED hasDescendant = {};
 
 /// \brief Matches AST nodes that have child AST nodes that match the
 /// provided matcher.
@@ -1544,13 +1583,8 @@ hasDescendant(const internal::Matcher<DescendantT> &DescendantMatcher) {
 /// matches instead of only on the first one.
 ///
 /// Usable as: Any Matcher
-template <typename ChildT>
-internal::ArgumentAdaptingMatcher<internal::ForEachMatcher, ChildT> forEach(
-    const internal::Matcher<ChildT> &ChildMatcher) {
-  return internal::ArgumentAdaptingMatcher<
-    internal::ForEachMatcher,
-    ChildT>(ChildMatcher);
-}
+const internal::ArgumentAdaptingMatcherFunc<internal::ForEachMatcher>
+LLVM_ATTRIBUTE_UNUSED forEach = {};
 
 /// \brief Matches AST nodes that have descendant AST nodes that match the
 /// provided matcher.
@@ -1576,15 +1610,8 @@ internal::ArgumentAdaptingMatcher<internal::ForEachMatcher, ChildT> forEach(
 /// \endcode
 ///
 /// Usable as: Any Matcher
-template <typename DescendantT>
-internal::ArgumentAdaptingMatcher<internal::ForEachDescendantMatcher,
-                                  DescendantT>
-forEachDescendant(
-    const internal::Matcher<DescendantT> &DescendantMatcher) {
-  return internal::ArgumentAdaptingMatcher<
-    internal::ForEachDescendantMatcher,
-    DescendantT>(DescendantMatcher);
-}
+const internal::ArgumentAdaptingMatcherFunc<internal::ForEachDescendantMatcher>
+LLVM_ATTRIBUTE_UNUSED forEachDescendant = {};
 
 /// \brief Matches if the node or any descendant matches.
 ///
@@ -1602,10 +1629,7 @@ forEachDescendant(
 ///
 /// Usable as: Any Matcher
 template <typename T>
-internal::PolymorphicMatcherWithParam2<
-    internal::EachOfMatcher, internal::Matcher<T>,
-    internal::ArgumentAdaptingMatcher<internal::ForEachDescendantMatcher, T> >
-findAll(const internal::Matcher<T> &Matcher) {
+internal::Matcher<T> findAll(const internal::Matcher<T> &Matcher) {
   return eachOf(Matcher, forEachDescendant(Matcher));
 }
 
@@ -1619,13 +1643,9 @@ findAll(const internal::Matcher<T> &Matcher) {
 /// \c compoundStmt(hasParent(ifStmt())) matches "{ int x = 43; }".
 ///
 /// Usable as: Any Matcher
-template <typename ParentT>
-internal::ArgumentAdaptingMatcher<internal::HasParentMatcher, ParentT>
-hasParent(const internal::Matcher<ParentT> &ParentMatcher) {
-  return internal::ArgumentAdaptingMatcher<
-    internal::HasParentMatcher,
-    ParentT>(ParentMatcher);
-}
+const internal::ArgumentAdaptingMatcherFunc<
+    internal::HasParentMatcher, internal::TypeList<Decl, Stmt>,
+    internal::TypeList<Decl, Stmt> > LLVM_ATTRIBUTE_UNUSED hasParent = {};
 
 /// \brief Matches AST nodes that have an ancestor that matches the provided
 /// matcher.
@@ -1638,13 +1658,9 @@ hasParent(const internal::Matcher<ParentT> &ParentMatcher) {
 /// \c expr(integerLiteral(hasAncestor(ifStmt()))) matches \c 42, but not 43.
 ///
 /// Usable as: Any Matcher
-template <typename AncestorT>
-internal::ArgumentAdaptingMatcher<internal::HasAncestorMatcher, AncestorT>
-hasAncestor(const internal::Matcher<AncestorT> &AncestorMatcher) {
-  return internal::ArgumentAdaptingMatcher<
-    internal::HasAncestorMatcher,
-    AncestorT>(AncestorMatcher);
-}
+const internal::ArgumentAdaptingMatcherFunc<
+    internal::HasAncestorMatcher, internal::TypeList<Decl, Stmt>,
+    internal::TypeList<Decl, Stmt> > LLVM_ATTRIBUTE_UNUSED hasAncestor = {};
 
 /// \brief Matches if the provided matcher does not match.
 ///
@@ -1662,22 +1678,31 @@ unless(const M &InnerMatcher) {
     internal::NotMatcher, M>(InnerMatcher);
 }
 
-/// \brief Matches a type if the declaration of the type matches the given
-/// matcher.
+/// \brief Matches a node if the declaration associated with that node
+/// matches the given matcher.
+///
+/// The associated declaration is:
+/// - for type nodes, the declaration of the underlying type
+/// - for CallExpr, the declaration of the callee
+/// - for MemberExpr, the declaration of the referenced member
+/// - for CXXConstructExpr, the declaration of the constructor
 ///
-/// In addition to being usable as Matcher<TypedefType>, also usable as
-/// Matcher<T> for any T supporting the getDecl() member function. e.g. various
-/// subtypes of clang::Type.
+/// Also usable as Matcher<T> for any T supporting the getDecl() member
+/// function. e.g. various subtypes of clang::Type and various expressions.
 ///
-/// Usable as: Matcher<QualType>, Matcher<CallExpr>, Matcher<CXXConstructExpr>,
-///   Matcher<MemberExpr>, Matcher<TypedefType>,
-///   Matcher<TemplateSpecializationType>
-inline internal::PolymorphicMatcherWithParam1< internal::HasDeclarationMatcher,
-                                     internal::Matcher<Decl> >
-    hasDeclaration(const internal::Matcher<Decl> &InnerMatcher) {
+/// Usable as: Matcher<CallExpr>, Matcher<CXXConstructExpr>,
+///   Matcher<DeclRefExpr>, Matcher<EnumType>, Matcher<InjectedClassNameType>,
+///   Matcher<LabelStmt>, Matcher<MemberExpr>, Matcher<QualType>,
+///   Matcher<RecordType>, Matcher<TagType>,
+///   Matcher<TemplateSpecializationType>, Matcher<TemplateTypeParmType>,
+///   Matcher<TypedefType>, Matcher<UnresolvedUsingType>
+inline internal::PolymorphicMatcherWithParam1<
+    internal::HasDeclarationMatcher, internal::Matcher<Decl>,
+    void(internal::HasDeclarationSupportedTypes)>
+hasDeclaration(const internal::Matcher<Decl> &InnerMatcher) {
   return internal::PolymorphicMatcherWithParam1<
-    internal::HasDeclarationMatcher,
-    internal::Matcher<Decl> >(InnerMatcher);
+      internal::HasDeclarationMatcher, internal::Matcher<Decl>,
+      void(internal::HasDeclarationSupportedTypes)>(InnerMatcher);
 }
 
 /// \brief Matches on the implicit object argument of a member call expression.
@@ -1728,9 +1753,9 @@ AST_MATCHER_P(CallExpr, callee, internal::Matcher<Stmt>,
 ///   class Y { public: void x(); };
 ///   void z() { Y y; y.x();
 /// \endcode
-inline internal::Matcher<CallExpr> callee(
-    const internal::Matcher<Decl> &InnerMatcher) {
-  return callExpr(hasDeclaration(InnerMatcher));
+AST_MATCHER_P_OVERLOAD(CallExpr, callee, internal::Matcher<Decl>, InnerMatcher,
+                       1) {
+  return callExpr(hasDeclaration(InnerMatcher)).matches(Node, Finder, Builder);
 }
 
 /// \brief Matches if the expression's or declaration's type matches a type
@@ -1742,11 +1767,9 @@ inline internal::Matcher<CallExpr> callee(
 ///  class X {};
 ///  void y(X &x) { x; X z; }
 /// \endcode
-AST_POLYMORPHIC_MATCHER_P(hasType, internal::Matcher<QualType>,
-                          InnerMatcher) {
-  TOOLING_COMPILE_ASSERT((llvm::is_base_of<Expr, NodeType>::value ||
-                          llvm::is_base_of<ValueDecl, NodeType>::value),
-                         instantiated_with_wrong_types);
+AST_POLYMORPHIC_MATCHER_P_OVERLOAD(
+    hasType, AST_POLYMORPHIC_SUPPORTED_TYPES_2(Expr, ValueDecl),
+    internal::Matcher<QualType>, InnerMatcher, 0) {
   return InnerMatcher.matches(Node.getType(), Finder, Builder);
 }
 
@@ -1767,11 +1790,27 @@ AST_POLYMORPHIC_MATCHER_P(hasType, internal::Matcher<QualType>,
 /// \endcode
 ///
 /// Usable as: Matcher<Expr>, Matcher<ValueDecl>
-inline internal::PolymorphicMatcherWithParam1<
-  internal::matcher_hasType0Matcher,
-  internal::Matcher<QualType> >
-hasType(const internal::Matcher<Decl> &InnerMatcher) {
-  return hasType(qualType(hasDeclaration(InnerMatcher)));
+AST_POLYMORPHIC_MATCHER_P_OVERLOAD(
+    hasType, AST_POLYMORPHIC_SUPPORTED_TYPES_2(Expr, ValueDecl),
+    internal::Matcher<Decl>, InnerMatcher, 1) {
+  return qualType(hasDeclaration(InnerMatcher))
+      .matches(Node.getType(), Finder, Builder);
+}
+
+/// \brief Matches if the type location of the declarator decl's type matches
+/// the inner matcher.
+///
+/// Given
+/// \code
+///   int x;
+/// \endcode
+/// declaratorDecl(hasTypeLoc(loc(asString("int"))))
+///   matches int x
+AST_MATCHER_P(DeclaratorDecl, hasTypeLoc, internal::Matcher<TypeLoc>, Inner) {
+  if (!Node.getTypeSourceInfo())
+    // This happens for example for implicit destructors.
+    return false;
+  return Inner.matches(Node.getTypeSourceInfo()->getTypeLoc(), Finder, Builder);
 }
 
 /// \brief Matches if the matched type is represented by the given string.
@@ -1804,9 +1843,10 @@ AST_MATCHER_P(
 }
 
 /// \brief Overloaded to match the pointee type's declaration.
-inline internal::Matcher<QualType> pointsTo(
-    const internal::Matcher<Decl> &InnerMatcher) {
-  return pointsTo(qualType(hasDeclaration(InnerMatcher)));
+AST_MATCHER_P_OVERLOAD(QualType, pointsTo, internal::Matcher<Decl>,
+                       InnerMatcher, 1) {
+  return pointsTo(qualType(hasDeclaration(InnerMatcher)))
+      .matches(Node, Finder, Builder);
 }
 
 /// \brief Matches if the matched type is a reference type and the referenced
@@ -1841,13 +1881,16 @@ AST_MATCHER_P(QualType, references, internal::Matcher<QualType>,
 /// varDecl(hasType(qualType(hasCanonicalType(referenceType())))))) does.
 AST_MATCHER_P(QualType, hasCanonicalType, internal::Matcher<QualType>,
               InnerMatcher) {
+  if (Node.isNull())
+    return false;
   return InnerMatcher.matches(Node.getCanonicalType(), Finder, Builder);
 }
 
 /// \brief Overloaded to match the referenced type's declaration.
-inline internal::Matcher<QualType> references(
-    const internal::Matcher<Decl> &InnerMatcher) {
-  return references(qualType(hasDeclaration(InnerMatcher)));
+AST_MATCHER_P_OVERLOAD(QualType, references, internal::Matcher<Decl>,
+                       InnerMatcher, 1) {
+  return references(qualType(hasDeclaration(InnerMatcher)))
+      .matches(Node, Finder, Builder);
 }
 
 AST_MATCHER_P(CXXMemberCallExpr, onImplicitObjectArgument,
@@ -1859,17 +1902,19 @@ AST_MATCHER_P(CXXMemberCallExpr, onImplicitObjectArgument,
 
 /// \brief Matches if the expression's type either matches the specified
 /// matcher, or is a pointer to a type that matches the InnerMatcher.
-inline internal::Matcher<CXXMemberCallExpr> thisPointerType(
-    const internal::Matcher<QualType> &InnerMatcher) {
+AST_MATCHER_P_OVERLOAD(CXXMemberCallExpr, thisPointerType,
+                       internal::Matcher<QualType>, InnerMatcher, 0) {
   return onImplicitObjectArgument(
-      anyOf(hasType(InnerMatcher), hasType(pointsTo(InnerMatcher))));
+      anyOf(hasType(InnerMatcher), hasType(pointsTo(InnerMatcher))))
+      .matches(Node, Finder, Builder);
 }
 
 /// \brief Overloaded to match the type's declaration.
-inline internal::Matcher<CXXMemberCallExpr> thisPointerType(
-    const internal::Matcher<Decl> &InnerMatcher) {
+AST_MATCHER_P_OVERLOAD(CXXMemberCallExpr, thisPointerType,
+                       internal::Matcher<Decl>, InnerMatcher, 1) {
   return onImplicitObjectArgument(
-      anyOf(hasType(InnerMatcher), hasType(pointsTo(InnerMatcher))));
+      anyOf(hasType(InnerMatcher), hasType(pointsTo(InnerMatcher))))
+      .matches(Node, Finder, Builder);
 }
 
 /// \brief Matches a DeclRefExpr that refers to a declaration that matches the
@@ -1953,11 +1998,9 @@ AST_MATCHER_P(
 ///   void f(int x, int y);
 ///   f(0, 0);
 /// \endcode
-AST_POLYMORPHIC_MATCHER_P(argumentCountIs, unsigned, N) {
-  TOOLING_COMPILE_ASSERT((llvm::is_base_of<CallExpr, NodeType>::value ||
-                          llvm::is_base_of<CXXConstructExpr,
-                                           NodeType>::value),
-                         instantiated_with_wrong_types);
+AST_POLYMORPHIC_MATCHER_P(argumentCountIs, AST_POLYMORPHIC_SUPPORTED_TYPES_2(
+                                               CallExpr, CXXConstructExpr),
+                          unsigned, N) {
   return Node.getNumArgs() == N;
 }
 
@@ -1970,11 +2013,9 @@ AST_POLYMORPHIC_MATCHER_P(argumentCountIs, unsigned, N) {
 ///   void x(int) { int y; x(y); }
 /// \endcode
 AST_POLYMORPHIC_MATCHER_P2(
-    hasArgument, unsigned, N, internal::Matcher<Expr>, InnerMatcher) {
-  TOOLING_COMPILE_ASSERT((llvm::is_base_of<CallExpr, NodeType>::value ||
-                         llvm::is_base_of<CXXConstructExpr,
-                                          NodeType>::value),
-                         instantiated_with_wrong_types);
+    hasArgument,
+    AST_POLYMORPHIC_SUPPORTED_TYPES_2(CallExpr, CXXConstructExpr),
+    unsigned, N, internal::Matcher<Expr>, InnerMatcher) {
   return (N < Node.getNumArgs() &&
           InnerMatcher.matches(
               *Node.getArg(N)->IgnoreParenImpCasts(), Finder, Builder));
@@ -2037,13 +2078,8 @@ AST_MATCHER_P2(DeclStmt, containsDeclaration, unsigned, N,
 ///   record matches Foo, hasAnyConstructorInitializer matches foo_(1)
 AST_MATCHER_P(CXXConstructorDecl, hasAnyConstructorInitializer,
               internal::Matcher<CXXCtorInitializer>, InnerMatcher) {
-  for (CXXConstructorDecl::init_const_iterator I = Node.init_begin();
-       I != Node.init_end(); ++I) {
-    if (InnerMatcher.matches(**I, Finder, Builder)) {
-      return true;
-    }
-  }
-  return false;
+  return matchesFirstInPointerRange(InnerMatcher, Node.init_begin(),
+                                    Node.init_end(), Finder, Builder);
 }
 
 /// \brief Matches the field declaration of a constructor initializer.
@@ -2086,7 +2122,7 @@ AST_MATCHER_P(CXXCtorInitializer, withInitializer,
       InnerMatcher.matches(*NodeAsExpr, Finder, Builder));
 }
 
-/// \brief Matches a contructor initializer if it is explicitly written in
+/// \brief Matches a constructor initializer if it is explicitly written in
 /// code (as opposed to implicitly added by the compiler).
 ///
 /// Given
@@ -2120,15 +2156,19 @@ AST_MATCHER(CXXConstructorDecl, isImplicit) {
 ///   matches x(1, y, 42)
 /// with hasAnyArgument(...)
 ///   matching y
-AST_POLYMORPHIC_MATCHER_P(hasAnyArgument, internal::Matcher<Expr>,
-                          InnerMatcher) {
-  TOOLING_COMPILE_ASSERT((llvm::is_base_of<CallExpr, NodeType>::value ||
-                         llvm::is_base_of<CXXConstructExpr,
-                                          NodeType>::value),
-                         instantiated_with_wrong_types);
+///
+/// FIXME: Currently this will ignore parentheses and implicit casts on
+/// the argument before applying the inner matcher. We'll want to remove
+/// this to allow for greater control by the user once \c ignoreImplicit()
+/// has been implemented.
+AST_POLYMORPHIC_MATCHER_P(hasAnyArgument, AST_POLYMORPHIC_SUPPORTED_TYPES_2(
+                                              CallExpr, CXXConstructExpr),
+                          internal::Matcher<Expr>, InnerMatcher) {
   for (unsigned I = 0; I < Node.getNumArgs(); ++I) {
-    if (InnerMatcher.matches(*Node.getArg(I)->IgnoreParenImpCasts(),
-                             Finder, Builder)) {
+    BoundNodesTreeBuilder Result(*Builder);
+    if (InnerMatcher.matches(*Node.getArg(I)->IgnoreParenImpCasts(), Finder,
+                             &Result)) {
+      *Builder = Result;
       return true;
     }
   }
@@ -2167,12 +2207,8 @@ AST_MATCHER_P2(FunctionDecl, hasParameter,
 ///   matching int y
 AST_MATCHER_P(FunctionDecl, hasAnyParameter,
               internal::Matcher<ParmVarDecl>, InnerMatcher) {
-  for (unsigned I = 0; I < Node.getNumParams(); ++I) {
-    if (InnerMatcher.matches(*Node.getParamDecl(I), Finder, Builder)) {
-      return true;
-    }
-  }
-  return false;
+  return matchesFirstInPointerRange(InnerMatcher, Node.param_begin(),
+                                    Node.param_end(), Finder, Builder);
 }
 
 /// \brief Matches \c FunctionDecls that have a specific parameter count.
@@ -2222,27 +2258,68 @@ AST_MATCHER(FunctionDecl, isExternC) {
 /// \code
 ///   if (true) {}
 /// \endcode
-AST_POLYMORPHIC_MATCHER_P(hasCondition, internal::Matcher<Expr>,
-                          InnerMatcher) {
-  TOOLING_COMPILE_ASSERT(
-    (llvm::is_base_of<IfStmt, NodeType>::value) ||
-    (llvm::is_base_of<ForStmt, NodeType>::value) ||
-    (llvm::is_base_of<WhileStmt, NodeType>::value) ||
-    (llvm::is_base_of<DoStmt, NodeType>::value) ||
-    (llvm::is_base_of<ConditionalOperator, NodeType>::value),
-    has_condition_requires_if_statement_conditional_operator_or_loop);
+AST_POLYMORPHIC_MATCHER_P(
+    hasCondition, AST_POLYMORPHIC_SUPPORTED_TYPES_5(
+                      IfStmt, ForStmt, WhileStmt, DoStmt, ConditionalOperator),
+    internal::Matcher<Expr>, InnerMatcher) {
   const Expr *const Condition = Node.getCond();
   return (Condition != NULL &&
           InnerMatcher.matches(*Condition, Finder, Builder));
 }
 
+namespace internal {
+struct NotEqualsBoundNodePredicate {
+  bool operator()(const internal::BoundNodesMap &Nodes) const {
+    return Nodes.getNode(ID) != Node;
+  }
+  std::string ID;
+  ast_type_traits::DynTypedNode Node;
+};
+} // namespace internal
+
+/// \brief Matches if a node equals a previously bound node.
+///
+/// Matches a node if it equals the node previously bound to \p ID.
+///
+/// Given
+/// \code
+///   class X { int a; int b; };
+/// \endcode
+/// recordDecl(
+///     has(fieldDecl(hasName("a"), hasType(type().bind("t")))),
+///     has(fieldDecl(hasName("b"), hasType(type(equalsBoundNode("t"))))))
+///   matches the class \c X, as \c a and \c b have the same type.
+///
+/// Note that when multiple matches are involved via \c forEach* matchers,
+/// \c equalsBoundNodes acts as a filter.
+/// For example:
+/// compoundStmt(
+///     forEachDescendant(varDecl().bind("d")),
+///     forEachDescendant(declRefExpr(to(decl(equalsBoundNode("d"))))))
+/// will trigger a match for each combination of variable declaration
+/// and reference to that variable declaration within a compound statement.
+AST_POLYMORPHIC_MATCHER_P(equalsBoundNode, AST_POLYMORPHIC_SUPPORTED_TYPES_4(
+                                               Stmt, Decl, Type, QualType),
+                          std::string, ID) {
+  // FIXME: Figure out whether it makes sense to allow this
+  // on any other node types.
+  // For *Loc it probably does not make sense, as those seem
+  // unique. For NestedNameSepcifier it might make sense, as
+  // those also have pointer identity, but I'm not sure whether
+  // they're ever reused.
+  internal::NotEqualsBoundNodePredicate Predicate;
+  Predicate.ID = ID;
+  Predicate.Node = ast_type_traits::DynTypedNode::create(Node);
+  return Builder->removeBindings(Predicate);
+}
+
 /// \brief Matches the condition variable statement in an if statement.
 ///
 /// Given
 /// \code
 ///   if (A* a = GetAPointer()) {}
 /// \endcode
-/// hasConditionVariableStatment(...)
+/// hasConditionVariableStatement(...)
 ///   matches 'A* a = GetAPointer()'.
 AST_MATCHER_P(IfStmt, hasConditionVariableStatement,
               internal::Matcher<DeclStmt>, InnerMatcher) {
@@ -2296,13 +2373,9 @@ AST_MATCHER_P(ArraySubscriptExpr, hasBase,
 ///   matches 'for (;;) {}'
 /// with compoundStmt()
 ///   matching '{}'
-AST_POLYMORPHIC_MATCHER_P(hasBody, internal::Matcher<Stmt>,
-                          InnerMatcher) {
-  TOOLING_COMPILE_ASSERT(
-      (llvm::is_base_of<DoStmt, NodeType>::value) ||
-      (llvm::is_base_of<ForStmt, NodeType>::value) ||
-      (llvm::is_base_of<WhileStmt, NodeType>::value),
-      has_body_requires_for_while_or_do_statement);
+AST_POLYMORPHIC_MATCHER_P(
+    hasBody, AST_POLYMORPHIC_SUPPORTED_TYPES_3(DoStmt, ForStmt, WhileStmt),
+    internal::Matcher<Stmt>, InnerMatcher) {
   const Stmt *const Statement = Node.getBody();
   return (Statement != NULL &&
           InnerMatcher.matches(*Statement, Finder, Builder));
@@ -2321,12 +2394,8 @@ AST_POLYMORPHIC_MATCHER_P(hasBody, internal::Matcher<Stmt>,
 ///   matching '{}'
 AST_MATCHER_P(CompoundStmt, hasAnySubstatement,
               internal::Matcher<Stmt>, InnerMatcher) {
-  for (CompoundStmt::const_body_iterator It = Node.body_begin();
-       It != Node.body_end();
-       ++It) {
-    if (InnerMatcher.matches(**It, Finder, Builder)) return true;
-  }
-  return false;
+  return matchesFirstInPointerRange(InnerMatcher, Node.body_begin(),
+                                    Node.body_end(), Finder, Builder);
 }
 
 /// \brief Checks that a compound statement contains a specific number of
@@ -2367,11 +2436,9 @@ equals(const ValueT &Value) {
 /// \code
 ///   !(a || b)
 /// \endcode
-AST_POLYMORPHIC_MATCHER_P(hasOperatorName, std::string, Name) {
-  TOOLING_COMPILE_ASSERT(
-    (llvm::is_base_of<BinaryOperator, NodeType>::value) ||
-    (llvm::is_base_of<UnaryOperator, NodeType>::value),
-    has_condition_requires_if_statement_or_conditional_operator);
+AST_POLYMORPHIC_MATCHER_P(hasOperatorName, AST_POLYMORPHIC_SUPPORTED_TYPES_2(
+                                               BinaryOperator, UnaryOperator),
+                          std::string, Name) {
   return Name == Node.getOpcodeStr(Node.getOpcode());
 }
 
@@ -2493,12 +2560,8 @@ AST_MATCHER_P(ConditionalOperator, hasFalseExpression,
 /// \endcode
 ///
 /// Usable as: Matcher<TagDecl>, Matcher<VarDecl>, Matcher<FunctionDecl>
-AST_POLYMORPHIC_MATCHER(isDefinition) {
-  TOOLING_COMPILE_ASSERT(
-      (llvm::is_base_of<TagDecl, NodeType>::value) ||
-      (llvm::is_base_of<VarDecl, NodeType>::value) ||
-      (llvm::is_base_of<FunctionDecl, NodeType>::value),
-      is_definition_requires_isThisDeclarationADefinition_method);
+AST_POLYMORPHIC_MATCHER(isDefinition, AST_POLYMORPHIC_SUPPORTED_TYPES_3(
+                                          TagDecl, VarDecl, FunctionDecl)) {
   return Node.isThisDeclarationADefinition();
 }
 
@@ -2540,6 +2603,21 @@ AST_MATCHER(CXXMethodDecl, isVirtual) {
   return Node.isVirtual();
 }
 
+/// \brief Matches if the given method declaration is const.
+///
+/// Given
+/// \code
+/// struct A {
+///   void foo() const;
+///   void bar();
+/// };
+/// \endcode
+///
+/// methodDecl(isConst()) matches A::foo() but not A::bar()
+AST_MATCHER(CXXMethodDecl, isConst) {
+  return Node.isConst();
+}
+
 /// \brief Matches if the given method declaration overrides another method.
 ///
 /// Given
@@ -2672,12 +2750,8 @@ AST_MATCHER_P(MemberExpr, hasObjectExpression,
 ///   matches \code using X::b \endcode
 AST_MATCHER_P(UsingDecl, hasAnyUsingShadowDecl,
               internal::Matcher<UsingShadowDecl>, InnerMatcher) {
-  for (UsingDecl::shadow_iterator II = Node.shadow_begin();
-       II != Node.shadow_end(); ++II) {
-    if (InnerMatcher.matches(**II, Finder, Builder))
-      return true;
-  }
-  return false;
+  return matchesFirstInPointerRange(InnerMatcher, Node.shadow_begin(),
+                                    Node.shadow_end(), Finder, Builder);
 }
 
 /// \brief Matches a using shadow declaration where the target declaration is
@@ -2720,11 +2794,9 @@ AST_MATCHER_P(UsingShadowDecl, hasTargetDecl,
 ///   does not match, as X<A> is an explicit template specialization.
 ///
 /// Usable as: Matcher<FunctionDecl>, Matcher<VarDecl>, Matcher<CXXRecordDecl>
-AST_POLYMORPHIC_MATCHER(isTemplateInstantiation) {
-  TOOLING_COMPILE_ASSERT((llvm::is_base_of<FunctionDecl, NodeType>::value) ||
-                         (llvm::is_base_of<VarDecl, NodeType>::value) ||
-                         (llvm::is_base_of<CXXRecordDecl, NodeType>::value),
-                         requires_getTemplateSpecializationKind_method);
+AST_POLYMORPHIC_MATCHER(
+    isTemplateInstantiation,
+    AST_POLYMORPHIC_SUPPORTED_TYPES_3(FunctionDecl, VarDecl, CXXRecordDecl)) {
   return (Node.getTemplateSpecializationKind() == TSK_ImplicitInstantiation ||
           Node.getTemplateSpecializationKind() ==
           TSK_ExplicitInstantiationDefinition);
@@ -2742,11 +2814,9 @@ AST_POLYMORPHIC_MATCHER(isTemplateInstantiation) {
 ///   matches the specialization A<int>().
 ///
 /// Usable as: Matcher<FunctionDecl>, Matcher<VarDecl>, Matcher<CXXRecordDecl>
-AST_POLYMORPHIC_MATCHER(isExplicitTemplateSpecialization) {
-  TOOLING_COMPILE_ASSERT((llvm::is_base_of<FunctionDecl, NodeType>::value) ||
-                         (llvm::is_base_of<VarDecl, NodeType>::value) ||
-                         (llvm::is_base_of<CXXRecordDecl, NodeType>::value),
-                         requires_getTemplateSpecializationKind_method);
+AST_POLYMORPHIC_MATCHER(
+    isExplicitTemplateSpecialization,
+    AST_POLYMORPHIC_SUPPORTED_TYPES_3(FunctionDecl, VarDecl, CXXRecordDecl)) {
   return (Node.getTemplateSpecializationKind() == TSK_ExplicitSpecialization);
 }
 
@@ -2807,7 +2877,9 @@ AST_TYPE_MATCHER(ComplexType, complexType);
 ///   matches "int b[7]"
 ///
 /// Usable as: Matcher<ArrayType>, Matcher<ComplexType>
-AST_TYPELOC_TRAVERSE_MATCHER(hasElementType, getElement);
+AST_TYPELOC_TRAVERSE_MATCHER(
+    hasElementType, getElement,
+    AST_POLYMORPHIC_SUPPORTED_TYPES_2(ArrayType, ComplexType));
 
 /// \brief Matches C arrays with a specified constant size.
 ///
@@ -2914,7 +2986,8 @@ AST_TYPE_MATCHER(AtomicType, atomicType);
 ///  matches "_Atomic(int) i"
 ///
 /// Usable as: Matcher<AtomicType>
-AST_TYPELOC_TRAVERSE_MATCHER(hasValueType, getValue);
+AST_TYPELOC_TRAVERSE_MATCHER(hasValueType, getValue,
+                             AST_POLYMORPHIC_SUPPORTED_TYPES_1(AtomicType));
 
 /// \brief Matches types nodes representing C++11 auto types.
 ///
@@ -2942,7 +3015,8 @@ AST_TYPE_MATCHER(AutoType, autoType);
 ///   matches "auto a"
 ///
 /// Usable as: Matcher<AutoType>
-AST_TYPE_TRAVERSE_MATCHER(hasDeducedType, getDeducedType);
+AST_TYPE_TRAVERSE_MATCHER(hasDeducedType, getDeducedType,
+                          AST_POLYMORPHIC_SUPPORTED_TYPES_1(AutoType));
 
 /// \brief Matches \c FunctionType nodes.
 ///
@@ -2979,7 +3053,8 @@ AST_TYPE_MATCHER(ParenType, parenType);
 /// \c ptr_to_func but not \c ptr_to_array.
 ///
 /// Usable as: Matcher<ParenType>
-AST_TYPE_TRAVERSE_MATCHER(innerType, getInnerType);
+AST_TYPE_TRAVERSE_MATCHER(innerType, getInnerType,
+                          AST_POLYMORPHIC_SUPPORTED_TYPES_1(ParenType));
 
 /// \brief Matches block pointer types, i.e. types syntactically represented as
 /// "void (^)(int)".
@@ -3073,7 +3148,10 @@ AST_TYPE_MATCHER(RValueReferenceType, rValueReferenceType);
 ///
 /// Usable as: Matcher<BlockPointerType>, Matcher<MemberPointerType>,
 ///   Matcher<PointerType>, Matcher<ReferenceType>
-AST_TYPELOC_TRAVERSE_MATCHER(pointee, getPointee);
+AST_TYPELOC_TRAVERSE_MATCHER(
+    pointee, getPointee,
+    AST_POLYMORPHIC_SUPPORTED_TYPES_4(BlockPointerType, MemberPointerType,
+                                      PointerType, ReferenceType));
 
 /// \brief Matches typedef types.
 ///
@@ -3100,6 +3178,16 @@ AST_TYPE_MATCHER(TypedefType, typedefType);
 /// instantiation in \c A and the type of the variable declaration in \c B.
 AST_TYPE_MATCHER(TemplateSpecializationType, templateSpecializationType);
 
+/// \brief Matches types nodes representing unary type transformations.
+///
+/// Given:
+/// \code
+///   typedef __underlying_type(T) type;
+/// \endcode
+/// unaryTransformType()
+///   matches "__underlying_type(T)"
+AST_TYPE_MATCHER(UnaryTransformType, unaryTransformType);
+
 /// \brief Matches record types (e.g. structs, classes).
 ///
 /// Given
@@ -3331,6 +3419,80 @@ AST_MATCHER_P_OVERLOAD(Stmt, equalsNode, Stmt*, Other, 1) {
 
 /// @}
 
+/// \brief Matches each case or default statement belonging to the given switch
+/// statement. This matcher may produce multiple matches.
+///
+/// Given
+/// \code
+///   switch (1) { case 1: case 2: default: switch (2) { case 3: case 4: ; } }
+/// \endcode
+/// switchStmt(forEachSwitchCase(caseStmt().bind("c"))).bind("s")
+///   matches four times, with "c" binding each of "case 1:", "case 2:",
+/// "case 3:" and "case 4:", and "s" respectively binding "switch (1)",
+/// "switch (1)", "switch (2)" and "switch (2)".
+AST_MATCHER_P(SwitchStmt, forEachSwitchCase, internal::Matcher<SwitchCase>,
+              InnerMatcher) {
+  BoundNodesTreeBuilder Result;
+  // FIXME: getSwitchCaseList() does not necessarily guarantee a stable
+  // iteration order. We should use the more general iterating matchers once
+  // they are capable of expressing this matcher (for example, it should ignore
+  // case statements belonging to nested switch statements).
+  bool Matched = false;
+  for (const SwitchCase *SC = Node.getSwitchCaseList(); SC;
+       SC = SC->getNextSwitchCase()) {
+    BoundNodesTreeBuilder CaseBuilder(*Builder);
+    bool CaseMatched = InnerMatcher.matches(*SC, Finder, &CaseBuilder);
+    if (CaseMatched) {
+      Matched = true;
+      Result.addMatch(CaseBuilder);
+    }
+  }
+  *Builder = Result;
+  return Matched;
+}
+
+/// \brief Matches each constructor initializer in a constructor definition.
+///
+/// Given
+/// \code
+///   class A { A() : i(42), j(42) {} int i; int j; };
+/// \endcode
+/// constructorDecl(forEachConstructorInitializer(forField(decl().bind("x"))))
+///   will trigger two matches, binding for 'i' and 'j' respectively.
+AST_MATCHER_P(CXXConstructorDecl, forEachConstructorInitializer,
+              internal::Matcher<CXXCtorInitializer>, InnerMatcher) {
+  BoundNodesTreeBuilder Result;
+  bool Matched = false;
+  for (CXXConstructorDecl::init_const_iterator I = Node.init_begin(),
+                                               E = Node.init_end();
+       I != E; ++I) {
+    BoundNodesTreeBuilder InitBuilder(*Builder);
+    if (InnerMatcher.matches(**I, Finder, &InitBuilder)) {
+      Matched = true;
+      Result.addMatch(InitBuilder);
+    }
+  }
+  *Builder = Result;
+  return Matched;
+}
+
+/// \brief If the given case statement does not use the GNU case range
+/// extension, matches the constant given in the statement.
+///
+/// Given
+/// \code
+///   switch (1) { case 1: case 1+1: case 3 ... 4: ; }
+/// \endcode
+/// caseStmt(hasCaseConstant(integerLiteral()))
+///   matches "case 1:"
+AST_MATCHER_P(CaseStmt, hasCaseConstant, internal::Matcher<Expr>,
+              InnerMatcher) {
+  if (Node.getRHS())
+    return false;
+
+  return InnerMatcher.matches(*Node.getLHS(), Finder, Builder);
+}
+
 } // end namespace ast_matchers
 } // end namespace clang
 
diff --git a/include/clang/ASTMatchers/ASTMatchersInternal.h b/include/clang/ASTMatchers/ASTMatchersInternal.h
index 30691ad8f912..69cee2eb5dfd 100644
--- a/include/clang/ASTMatchers/ASTMatchersInternal.h
+++ b/include/clang/ASTMatchers/ASTMatchersInternal.h
@@ -36,12 +36,13 @@
 #define LLVM_CLANG_AST_MATCHERS_AST_MATCHERS_INTERNAL_H
 
 #include "clang/AST/ASTTypeTraits.h"
-#include "clang/AST/DeclCXX.h"
 #include "clang/AST/Decl.h"
+#include "clang/AST/DeclCXX.h"
 #include "clang/AST/ExprCXX.h"
-#include "clang/AST/StmtCXX.h"
 #include "clang/AST/Stmt.h"
+#include "clang/AST/StmtCXX.h"
 #include "clang/AST/Type.h"
+#include "llvm/ADT/Optional.h"
 #include "llvm/ADT/VariadicFunction.h"
 #include "llvm/Support/type_traits.h"
 #include <map>
@@ -60,7 +61,6 @@ class BoundNodes;
 
 namespace internal {
 
-class BoundNodesTreeBuilder;
 /// \brief Internal version of BoundNodes. Holds all the bound nodes.
 class BoundNodesMap {
 public:
@@ -71,9 +71,6 @@ public:
   void addNode(StringRef ID, const T* Node) {
     NodeMap[ID] = ast_type_traits::DynTypedNode::create(*Node);
   }
-  void addNode(StringRef ID, ast_type_traits::DynTypedNode Node) {
-    NodeMap[ID] = Node;
-  }
 
   /// \brief Returns the AST node bound to \c ID.
   ///
@@ -88,29 +85,39 @@ public:
     return It->second.get<T>();
   }
 
-  /// \brief Copies all ID/Node pairs to BoundNodesTreeBuilder \c Builder.
-  void copyTo(BoundNodesTreeBuilder *Builder) const;
+  ast_type_traits::DynTypedNode getNode(StringRef ID) const {
+    IDToNodeMap::const_iterator It = NodeMap.find(ID);
+    if (It == NodeMap.end()) {
+      return ast_type_traits::DynTypedNode();
+    }
+    return It->second;
+  }
 
-  /// \brief Copies all ID/Node pairs to BoundNodesMap \c Other.
-  void copyTo(BoundNodesMap *Other) const;
+  /// \brief Imposes an order on BoundNodesMaps.
+  bool operator<(const BoundNodesMap &Other) const {
+    return NodeMap < Other.NodeMap;
+  }
 
-private:
   /// \brief A map from IDs to the bound nodes.
+  ///
+  /// Note that we're using std::map here, as for memoization:
+  /// - we need a comparison operator
+  /// - we need an assignment operator
   typedef std::map<std::string, ast_type_traits::DynTypedNode> IDToNodeMap;
 
+  const IDToNodeMap &getMap() const {
+    return NodeMap;
+  }
+
+private:
   IDToNodeMap NodeMap;
 };
 
-/// \brief A tree of bound nodes in match results.
-///
-/// If a match can contain multiple matches on the same node with different
-/// matching subexpressions, BoundNodesTree contains a branch for each of
-/// those matching subexpressions.
+/// \brief Creates BoundNodesTree objects.
 ///
-/// BoundNodesTree's are created during the matching process; when a match
-/// is found, we iterate over the tree and create a BoundNodes object containing
-/// the union of all bound nodes on the path from the root to a each leaf.
-class BoundNodesTree {
+/// The tree builder is used during the matching process to insert the bound
+/// nodes from the Id matcher.
+class BoundNodesTreeBuilder {
 public:
   /// \brief A visitor interface to visit all BoundNodes results for a
   /// BoundNodesTree.
@@ -124,63 +131,36 @@ public:
     virtual void visitMatch(const BoundNodes& BoundNodesView) = 0;
   };
 
-  BoundNodesTree();
-
-  /// \brief Create a BoundNodesTree from pre-filled maps of bindings.
-  BoundNodesTree(const BoundNodesMap& Bindings,
-                 const std::vector<BoundNodesTree> RecursiveBindings);
+  /// \brief Add a binding from an id to a node.
+  template <typename T> void setBinding(const std::string &Id, const T *Node) {
+    if (Bindings.empty())
+      Bindings.push_back(BoundNodesMap());
+    for (unsigned i = 0, e = Bindings.size(); i != e; ++i)
+      Bindings[i].addNode(Id, Node);
+  }
 
-  /// \brief Adds all bound nodes to \c Builder.
-  void copyTo(BoundNodesTreeBuilder* Builder) const;
+  /// \brief Adds a branch in the tree.
+  void addMatch(const BoundNodesTreeBuilder &Bindings);
 
   /// \brief Visits all matches that this BoundNodesTree represents.
   ///
   /// The ownership of 'ResultVisitor' remains at the caller.
   void visitMatches(Visitor* ResultVisitor);
 
-private:
-  void visitMatchesRecursively(
-      Visitor* ResultVistior,
-      const BoundNodesMap& AggregatedBindings);
-
-  // FIXME: Find out whether we want to use different data structures here -
-  // first benchmarks indicate that it doesn't matter though.
-
-  BoundNodesMap Bindings;
-
-  std::vector<BoundNodesTree> RecursiveBindings;
-};
-
-/// \brief Creates BoundNodesTree objects.
-///
-/// The tree builder is used during the matching process to insert the bound
-/// nodes from the Id matcher.
-class BoundNodesTreeBuilder {
-public:
-  BoundNodesTreeBuilder();
-
-  /// \brief Add a binding from an id to a node.
-  template <typename T>
-  void setBinding(const std::string &Id, const T *Node) {
-    Bindings.addNode(Id, Node);
-  }
-  void setBinding(const std::string &Id, ast_type_traits::DynTypedNode Node) {
-    Bindings.addNode(Id, Node);
+  template <typename ExcludePredicate>
+  bool removeBindings(const ExcludePredicate &Predicate) {
+    Bindings.erase(std::remove_if(Bindings.begin(), Bindings.end(), Predicate),
+                   Bindings.end());
+    return !Bindings.empty();
   }
 
-  /// \brief Adds a branch in the tree.
-  void addMatch(const BoundNodesTree& Bindings);
-
-  /// \brief Returns a BoundNodes object containing all current bindings.
-  BoundNodesTree build() const;
+  /// \brief Imposes an order on BoundNodesTreeBuilders.
+  bool operator<(const BoundNodesTreeBuilder &Other) const {
+    return Bindings < Other.Bindings;
+  }
 
 private:
-  BoundNodesTreeBuilder(const BoundNodesTreeBuilder &) LLVM_DELETED_FUNCTION;
-  void operator=(const BoundNodesTreeBuilder &) LLVM_DELETED_FUNCTION;
-
-  BoundNodesMap Bindings;
-
-  std::vector<BoundNodesTree> RecursiveBindings;
+  SmallVector<BoundNodesMap, 16> Bindings;
 };
 
 class ASTMatchFinder;
@@ -225,24 +205,6 @@ private:
   }
 };
 
-/// \brief Base class for all matchers that works on a \c DynTypedNode.
-///
-/// Matcher implementations will check whether the \c DynTypedNode is
-/// convertible into the respecitve types and then do the actual match
-/// on the actual node, or return false if it is not convertible.
-class DynTypedMatcher {
-public:
-  virtual ~DynTypedMatcher() {}
-
-  /// \brief Returns true if the matcher matches the given \c DynNode.
-  virtual bool matches(const ast_type_traits::DynTypedNode DynNode,
-                       ASTMatchFinder *Finder,
-                       BoundNodesTreeBuilder *Builder) const = 0;
-
-  /// \brief Returns a unique ID for the matcher.
-  virtual uint64_t getID() const = 0;
-};
-
 /// \brief Wrapper of a MatcherInterface<T> *that allows copying.
 ///
 /// A Matcher<Base> can be used anywhere a Matcher<Derived> is
@@ -252,7 +214,7 @@ public:
 /// operator rather than a type hierarchy to be able to templatize the
 /// type hierarchy instead of spelling it out.
 template <typename T>
-class Matcher : public DynTypedMatcher {
+class Matcher {
 public:
   /// \brief Takes ownership of the provided implementation pointer.
   explicit Matcher(MatcherInterface<T> *Implementation)
@@ -282,7 +244,13 @@ public:
   bool matches(const T &Node,
                ASTMatchFinder *Finder,
                BoundNodesTreeBuilder *Builder) const {
-    return Implementation->matches(Node, Finder, Builder);
+    if (Implementation->matches(Node, Finder, Builder))
+      return true;
+    // Delete all bindings when a matcher does not match.
+    // This prevents unexpected exposure of bound nodes in unmatches
+    // branches of the match tree.
+    *Builder = BoundNodesTreeBuilder();
+    return false;
   }
 
   /// \brief Returns an ID that uniquely identifies the matcher.
@@ -292,15 +260,6 @@ public:
     return reinterpret_cast<uint64_t>(Implementation.getPtr());
   }
 
-  /// \brief Returns whether the matcher matches on the given \c DynNode.
-  virtual bool matches(const ast_type_traits::DynTypedNode DynNode,
-                       ASTMatchFinder *Finder,
-                       BoundNodesTreeBuilder *Builder) const {
-    const T *Node = DynNode.get<T>();
-    if (!Node) return false;
-    return matches(*Node, Finder, Builder);
-  }
-
   /// \brief Allows the conversion of a \c Matcher<Type> to a \c
   /// Matcher<QualType>.
   ///
@@ -353,6 +312,217 @@ inline Matcher<T> makeMatcher(MatcherInterface<T> *Implementation) {
   return Matcher<T>(Implementation);
 }
 
+template <typename T> class BindableMatcher;
+
+/// \brief Matcher that works on a \c DynTypedNode.
+///
+/// It is constructed from a \c Matcher<T> object and redirects most calls to
+/// underlying matcher.
+/// It checks whether the \c DynTypedNode is convertible into the type of the
+/// underlying matcher and then do the actual match on the actual node, or
+/// return false if it is not convertible.
+class DynTypedMatcher {
+public:
+  /// \brief Construct from a \c Matcher<T>. Copies the matcher.
+  template <typename T> inline DynTypedMatcher(const Matcher<T> &M);
+
+  /// \brief Construct from a bindable \c Matcher<T>. Copies the matcher.
+  ///
+  /// This version enables \c tryBind() on the \c DynTypedMatcher.
+  template <typename T> inline DynTypedMatcher(const BindableMatcher<T> &M);
+
+  /// \brief Returns true if the matcher matches the given \c DynNode.
+  bool matches(const ast_type_traits::DynTypedNode DynNode,
+               ASTMatchFinder *Finder, BoundNodesTreeBuilder *Builder) const {
+    return Storage->matches(DynNode, Finder, Builder);
+  }
+
+  /// \brief Bind the specified \p ID to the matcher.
+  /// \return A new matcher with the \p ID bound to it if this matcher supports
+  ///   binding. Otherwise, returns an empty \c Optional<>.
+  llvm::Optional<DynTypedMatcher> tryBind(StringRef ID) const {
+    return Storage->tryBind(ID);
+  }
+
+  /// \brief Returns a unique \p ID for the matcher.
+  uint64_t getID() const { return Storage->getID(); }
+
+  /// \brief Returns the type this matcher works on.
+  ///
+  /// \c matches() will always return false unless the node passed is of this
+  /// or a derived type.
+  ast_type_traits::ASTNodeKind getSupportedKind() const {
+    return Storage->getSupportedKind();
+  }
+
+  /// \brief Returns \c true if the passed \c DynTypedMatcher can be converted
+  ///   to a \c Matcher<T>.
+  ///
+  /// This method verifies that the underlying matcher in \c Other can process
+  /// nodes of types T.
+  template <typename T> bool canConvertTo() const {
+    return getSupportedKind().isBaseOf(
+        ast_type_traits::ASTNodeKind::getFromNodeKind<T>());
+  }
+
+  /// \brief Construct a \c Matcher<T> interface around the dynamic matcher.
+  ///
+  /// This method asserts that \c canConvertTo() is \c true. Callers
+  /// should call \c canConvertTo() first to make sure that \c this is
+  /// compatible with T.
+  template <typename T> Matcher<T> convertTo() const {
+    assert(canConvertTo<T>());
+    return unconditionalConvertTo<T>();
+  }
+
+  /// \brief Same as \c convertTo(), but does not check that the underlying
+  ///   matcher can handle a value of T.
+  ///
+  /// If it is not compatible, then this matcher will never match anything.
+  template <typename T> Matcher<T> unconditionalConvertTo() const {
+    return Matcher<T>(new WrappedMatcher<T>(*this));
+  }
+
+private:
+  class MatcherStorage : public RefCountedBaseVPTR {
+  public:
+    MatcherStorage(ast_type_traits::ASTNodeKind SupportedKind, uint64_t ID)
+        : SupportedKind(SupportedKind), ID(ID) {}
+    virtual ~MatcherStorage();
+
+    virtual bool matches(const ast_type_traits::DynTypedNode DynNode,
+                         ASTMatchFinder *Finder,
+                         BoundNodesTreeBuilder *Builder) const = 0;
+
+    virtual llvm::Optional<DynTypedMatcher> tryBind(StringRef ID) const = 0;
+
+    ast_type_traits::ASTNodeKind getSupportedKind() const {
+      return SupportedKind;
+    }
+
+    uint64_t getID() const { return ID; }
+
+  private:
+    const ast_type_traits::ASTNodeKind SupportedKind;
+    const uint64_t ID;
+  };
+
+  /// \brief Typed implementation of \c MatcherStorage.
+  template <typename T> class TypedMatcherStorage;
+
+  /// \brief Simple MatcherInterface<T> wrapper around a DynTypedMatcher.
+  template <typename T> class WrappedMatcher;
+
+  IntrusiveRefCntPtr<const MatcherStorage> Storage;
+};
+
+template <typename T>
+class DynTypedMatcher::TypedMatcherStorage : public MatcherStorage {
+public:
+  TypedMatcherStorage(const Matcher<T> &Other, bool AllowBind)
+      : MatcherStorage(ast_type_traits::ASTNodeKind::getFromNodeKind<T>(),
+                       Other.getID()),
+        InnerMatcher(Other), AllowBind(AllowBind) {}
+
+  bool matches(const ast_type_traits::DynTypedNode DynNode,
+               ASTMatchFinder *Finder, BoundNodesTreeBuilder *Builder) const
+      LLVM_OVERRIDE {
+    if (const T *Node = DynNode.get<T>()) {
+      return InnerMatcher.matches(*Node, Finder, Builder);
+    }
+    return false;
+  }
+
+  llvm::Optional<DynTypedMatcher> tryBind(StringRef ID) const LLVM_OVERRIDE {
+    if (!AllowBind)
+      return llvm::Optional<DynTypedMatcher>();
+    return DynTypedMatcher(BindableMatcher<T>(InnerMatcher).bind(ID));
+  }
+
+private:
+  const Matcher<T> InnerMatcher;
+  const bool AllowBind;
+};
+
+template <typename T>
+inline DynTypedMatcher::DynTypedMatcher(const Matcher<T> &M)
+    : Storage(new TypedMatcherStorage<T>(M, false)) {}
+
+template <typename T>
+inline DynTypedMatcher::DynTypedMatcher(const BindableMatcher<T> &M)
+    : Storage(new TypedMatcherStorage<T>(M, true)) {}
+
+template <typename T>
+class DynTypedMatcher::WrappedMatcher : public MatcherInterface<T> {
+public:
+  explicit WrappedMatcher(const DynTypedMatcher &Matcher) : Inner(Matcher) {}
+  virtual ~WrappedMatcher() {}
+
+  bool matches(const T &Node, ASTMatchFinder *Finder,
+               BoundNodesTreeBuilder *Builder) const {
+    return Inner.matches(ast_type_traits::DynTypedNode::create(Node), Finder,
+                         Builder);
+  }
+
+private:
+  const DynTypedMatcher Inner;
+};
+
+/// \brief Specialization of the conversion functions for QualType.
+///
+/// These specializations provide the Matcher<Type>->Matcher<QualType>
+/// conversion that the static API does.
+template <> inline bool DynTypedMatcher::canConvertTo<QualType>() const {
+  const ast_type_traits::ASTNodeKind SourceKind = getSupportedKind();
+  return SourceKind.isSame(
+             ast_type_traits::ASTNodeKind::getFromNodeKind<Type>()) ||
+         SourceKind.isSame(
+             ast_type_traits::ASTNodeKind::getFromNodeKind<QualType>());
+}
+
+template <>
+inline Matcher<QualType> DynTypedMatcher::convertTo<QualType>() const {
+  assert(canConvertTo<QualType>());
+  const ast_type_traits::ASTNodeKind SourceKind = getSupportedKind();
+  if (SourceKind.isSame(
+          ast_type_traits::ASTNodeKind::getFromNodeKind<Type>())) {
+    // We support implicit conversion from Matcher<Type> to Matcher<QualType>
+    return unconditionalConvertTo<Type>();
+  }
+  return unconditionalConvertTo<QualType>();
+}
+
+/// \brief Finds the first node in a range that matches the given matcher.
+template <typename MatcherT, typename IteratorT>
+bool matchesFirstInRange(const MatcherT &Matcher, IteratorT Start,
+                         IteratorT End, ASTMatchFinder *Finder,
+                         BoundNodesTreeBuilder *Builder) {
+  for (IteratorT I = Start; I != End; ++I) {
+    BoundNodesTreeBuilder Result(*Builder);
+    if (Matcher.matches(*I, Finder, &Result)) {
+      *Builder = Result;
+      return true;
+    }
+  }
+  return false;
+}
+
+/// \brief Finds the first node in a pointer range that matches the given
+/// matcher.
+template <typename MatcherT, typename IteratorT>
+bool matchesFirstInPointerRange(const MatcherT &Matcher, IteratorT Start,
+                                IteratorT End, ASTMatchFinder *Finder,
+                                BoundNodesTreeBuilder *Builder) {
+  for (IteratorT I = Start; I != End; ++I) {
+    BoundNodesTreeBuilder Result(*Builder);
+    if (Matcher.matches(**I, Finder, &Result)) {
+      *Builder = Result;
+      return true;
+    }
+  }
+  return false;
+}
+
 /// \brief Metafunction to determine if type T has a member called getDecl.
 template <typename T> struct has_getDecl {
   struct Default { int getDecl; };
@@ -632,6 +802,94 @@ protected:
                                  AncestorMatchMode MatchMode) = 0;
 };
 
+/// \brief A type-list implementation.
+///
+/// A list is declared as a tree of type list nodes, where the leafs are the
+/// types.
+/// However, it is used as a "linked list" of types, by using the ::head and
+/// ::tail typedefs.
+/// Each node supports up to 4 children (instead of just 2) to reduce the
+/// nesting required by large lists.
+template <typename T1 = void, typename T2 = void, typename T3 = void,
+          typename T4 = void>
+struct TypeList {
+  /// \brief Implementation detail. Combined with the specializations below,
+  ///   this typedef allows for flattening of nested structures.
+  typedef TypeList<T1, T2, T3, T4> self;
+
+  /// \brief The first type on the list.
+  typedef T1 head;
+
+  /// \brief A sub list with the tail. ie everything but the head.
+  ///
+  /// This type is used to do recursion. TypeList<>/EmptyTypeList indicates the
+  /// end of the list.
+  typedef typename TypeList<T2, T3, T4>::self tail;
+};
+
+/// \brief Template specialization to allow nested lists.
+///
+/// First element is a typelist. Pop its first element.
+template <typename Sub1, typename Sub2, typename Sub3, typename Sub4,
+          typename T2, typename T3, typename T4>
+struct TypeList<TypeList<Sub1, Sub2, Sub3, Sub4>, T2, T3,
+                T4> : public TypeList<Sub1,
+                                      typename TypeList<Sub2, Sub3, Sub4>::self,
+                                      typename TypeList<T2, T3, T4>::self> {};
+
+/// \brief Template specialization to allow nested lists.
+///
+/// First element is an empty typelist. Skip it.
+template <typename T2, typename T3, typename T4>
+struct TypeList<TypeList<>, T2, T3, T4> : public TypeList<T2, T3, T4> {
+};
+
+/// \brief The empty type list.
+typedef TypeList<> EmptyTypeList;
+
+/// \brief Helper meta-function to determine if some type \c T is present or
+///   a parent type in the list.
+template <typename AnyTypeList, typename T>
+struct TypeListContainsSuperOf {
+  static const bool value =
+      llvm::is_base_of<typename AnyTypeList::head, T>::value ||
+      TypeListContainsSuperOf<typename AnyTypeList::tail, T>::value;
+};
+template <typename T>
+struct TypeListContainsSuperOf<EmptyTypeList, T> {
+  static const bool value = false;
+};
+
+/// \brief A "type list" that contains all types.
+///
+/// Useful for matchers like \c anything and \c unless.
+typedef TypeList<
+    TypeList<Decl, Stmt, NestedNameSpecifier, NestedNameSpecifierLoc>,
+    TypeList<QualType, Type, TypeLoc, CXXCtorInitializer> > AllNodeBaseTypes;
+
+/// \brief Helper meta-function to extract the argument out of a function of
+///   type void(Arg).
+///
+/// See AST_POLYMORPHIC_SUPPORTED_TYPES_* for details.
+template <class T> struct ExtractFunctionArgMeta;
+template <class T> struct ExtractFunctionArgMeta<void(T)> {
+  typedef T type;
+};
+
+/// \brief Default type lists for ArgumentAdaptingMatcher matchers.
+typedef AllNodeBaseTypes AdaptativeDefaultFromTypes;
+typedef TypeList<TypeList<Decl, Stmt, NestedNameSpecifier>,
+                 TypeList<NestedNameSpecifierLoc, TypeLoc, QualType> >
+AdaptativeDefaultToTypes;
+
+/// \brief All types that are supported by HasDeclarationMatcher above.
+typedef TypeList<TypeList<CallExpr, CXXConstructExpr, DeclRefExpr, EnumType>,
+                 TypeList<InjectedClassNameType, LabelStmt, MemberExpr>,
+                 TypeList<QualType, RecordType, TagType>,
+                 TypeList<TemplateSpecializationType, TemplateTypeParmType,
+                          TypedefType, UnresolvedUsingType> >
+HasDeclarationSupportedTypes;
+
 /// \brief Converts a \c Matcher<T> to a matcher of desired type \c To by
 /// "adapting" a \c To into a \c T.
 ///
@@ -646,19 +904,33 @@ protected:
 /// If a matcher does not need knowledge about the inner type, prefer to use
 /// PolymorphicMatcherWithParam1.
 template <template <typename ToArg, typename FromArg> class ArgumentAdapterT,
-          typename T>
-class ArgumentAdaptingMatcher {
-public:
-  explicit ArgumentAdaptingMatcher(const Matcher<T> &InnerMatcher)
-      : InnerMatcher(InnerMatcher) {}
+          typename FromTypes = AdaptativeDefaultFromTypes,
+          typename ToTypes = AdaptativeDefaultToTypes>
+struct ArgumentAdaptingMatcherFunc {
+  template <typename T> class Adaptor {
+  public:
+    explicit Adaptor(const Matcher<T> &InnerMatcher)
+        : InnerMatcher(InnerMatcher) {}
 
-  template <typename To>
-  operator Matcher<To>() const {
-    return Matcher<To>(new ArgumentAdapterT<To, T>(InnerMatcher));
+    typedef ToTypes ReturnTypes;
+
+    template <typename To> operator Matcher<To>() const {
+      return Matcher<To>(new ArgumentAdapterT<To, T>(InnerMatcher));
+    }
+
+  private:
+    const Matcher<T> InnerMatcher;
+  };
+
+  template <typename T>
+  static Adaptor<T> create(const Matcher<T> &InnerMatcher) {
+    return Adaptor<T>(InnerMatcher);
   }
 
-private:
-  const Matcher<T> InnerMatcher;
+  template <typename T>
+  Adaptor<T> operator()(const Matcher<T> &InnerMatcher) const {
+    return create(InnerMatcher);
+  }
 };
 
 /// \brief A PolymorphicMatcherWithParamN<MatcherT, P1, ..., PN> object can be
@@ -673,24 +945,33 @@ private:
 /// - PolymorphicMatcherWithParam1<ValueEqualsMatcher, int>(42)
 ///   creates an object that can be used as a Matcher<T> for any type T
 ///   where a ValueEqualsMatcher<T, int>(42) can be constructed.
-template <template <typename T> class MatcherT>
+template <template <typename T> class MatcherT,
+          typename ReturnTypesF = void(AllNodeBaseTypes)>
 class PolymorphicMatcherWithParam0 {
 public:
+  typedef typename ExtractFunctionArgMeta<ReturnTypesF>::type ReturnTypes;
   template <typename T>
   operator Matcher<T>() const {
+    TOOLING_COMPILE_ASSERT((TypeListContainsSuperOf<ReturnTypes, T>::value),
+                           right_polymorphic_conversion);
     return Matcher<T>(new MatcherT<T>());
   }
 };
 
 template <template <typename T, typename P1> class MatcherT,
-          typename P1>
+          typename P1,
+          typename ReturnTypesF = void(AllNodeBaseTypes)>
 class PolymorphicMatcherWithParam1 {
 public:
   explicit PolymorphicMatcherWithParam1(const P1 &Param1)
       : Param1(Param1) {}
 
+  typedef typename ExtractFunctionArgMeta<ReturnTypesF>::type ReturnTypes;
+
   template <typename T>
   operator Matcher<T>() const {
+    TOOLING_COMPILE_ASSERT((TypeListContainsSuperOf<ReturnTypes, T>::value),
+                           right_polymorphic_conversion);
     return Matcher<T>(new MatcherT<T, P1>(Param1));
   }
 
@@ -699,14 +980,19 @@ private:
 };
 
 template <template <typename T, typename P1, typename P2> class MatcherT,
-          typename P1, typename P2>
+          typename P1, typename P2,
+          typename ReturnTypesF = void(AllNodeBaseTypes)>
 class PolymorphicMatcherWithParam2 {
 public:
   PolymorphicMatcherWithParam2(const P1 &Param1, const P2 &Param2)
       : Param1(Param1), Param2(Param2) {}
 
+  typedef typename ExtractFunctionArgMeta<ReturnTypesF>::type ReturnTypes;
+
   template <typename T>
   operator Matcher<T>() const {
+    TOOLING_COMPILE_ASSERT((TypeListContainsSuperOf<ReturnTypes, T>::value),
+                           right_polymorphic_conversion);
     return Matcher<T>(new MatcherT<T, P1, P2>(Param1, Param2));
   }
 
@@ -737,27 +1023,6 @@ public:
   }
 };
 
-/// \brief Provides a MatcherInterface<T> for a Matcher<To> that matches if T is
-/// dyn_cast'able into To and the given Matcher<To> matches on the dyn_cast'ed
-/// node.
-template <typename T, typename To>
-class DynCastMatcher : public MatcherInterface<T> {
-public:
-  explicit DynCastMatcher(const Matcher<To> &InnerMatcher)
-      : InnerMatcher(InnerMatcher) {}
-
-  virtual bool matches(const T &Node,
-                       ASTMatchFinder *Finder,
-                       BoundNodesTreeBuilder *Builder) const {
-    const To *InnerMatchValue = dyn_cast<To>(&Node);
-    return InnerMatchValue != NULL &&
-      InnerMatcher.matches(*InnerMatchValue, Finder, Builder);
-  }
-
-private:
-  const Matcher<To> InnerMatcher;
-};
-
 /// \brief Matcher<T> that wraps an inner Matcher<T> and binds the matched node
 /// to an ID if the inner matcher matches on the node.
 template <typename T>
@@ -790,7 +1055,8 @@ private:
 template <typename T>
 class BindableMatcher : public Matcher<T> {
 public:
-  BindableMatcher(MatcherInterface<T> *Implementation)
+  explicit BindableMatcher(const Matcher<T> &M) : Matcher<T>(M) {}
+  explicit BindableMatcher(MatcherInterface<T> *Implementation)
     : Matcher<T>(Implementation) {}
 
   /// \brief Returns a matcher that will bind the matched node on a match.
@@ -867,108 +1133,172 @@ public:
   virtual bool matches(const T &Node,
                        ASTMatchFinder *Finder,
                        BoundNodesTreeBuilder *Builder) const {
-    return !InnerMatcher.matches(Node, Finder, Builder);
+    // The 'unless' matcher will always discard the result:
+    // If the inner matcher doesn't match, unless returns true,
+    // but the inner matcher cannot have bound anything.
+    // If the inner matcher matches, the result is false, and
+    // any possible binding will be discarded.
+    // We still need to hand in all the bound nodes up to this
+    // point so the inner matcher can depend on bound nodes,
+    // and we need to actively discard the bound nodes, otherwise
+    // the inner matcher will reset the bound nodes if it doesn't
+    // match, but this would be inversed by 'unless'.
+    BoundNodesTreeBuilder Discard(*Builder);
+    return !InnerMatcher.matches(Node, Finder, &Discard);
   }
 
 private:
   const Matcher<T> InnerMatcher;
 };
 
-/// \brief Matches nodes of type T for which both provided matchers match.
-///
-/// Type arguments MatcherT1 and MatcherT2 are required by
-/// PolymorphicMatcherWithParam2 but not actually used. They will
-/// always be instantiated with types convertible to Matcher<T>.
-template <typename T, typename MatcherT1, typename MatcherT2>
-class AllOfMatcher : public MatcherInterface<T> {
+/// \brief VariadicOperatorMatcher related types.
+/// @{
+
+/// \brief Function signature for any variadic operator. It takes the inner
+///   matchers as an array of DynTypedMatcher.
+typedef bool (*VariadicOperatorFunction)(
+    const ast_type_traits::DynTypedNode DynNode, ASTMatchFinder *Finder,
+    BoundNodesTreeBuilder *Builder, ArrayRef<DynTypedMatcher> InnerMatchers);
+
+/// \brief \c MatcherInterface<T> implementation for an variadic operator.
+template <typename T>
+class VariadicOperatorMatcherInterface : public MatcherInterface<T> {
 public:
-  AllOfMatcher(const Matcher<T> &InnerMatcher1, const Matcher<T> &InnerMatcher2)
-      : InnerMatcher1(InnerMatcher1), InnerMatcher2(InnerMatcher2) {}
+  VariadicOperatorMatcherInterface(VariadicOperatorFunction Func,
+                                   ArrayRef<const Matcher<T> *> InputMatchers)
+      : Func(Func) {
+    for (size_t i = 0, e = InputMatchers.size(); i != e; ++i) {
+      InnerMatchers.push_back(*InputMatchers[i]);
+    }
+  }
 
-  virtual bool matches(const T &Node,
-                       ASTMatchFinder *Finder,
+  virtual bool matches(const T &Node, ASTMatchFinder *Finder,
                        BoundNodesTreeBuilder *Builder) const {
-    return InnerMatcher1.matches(Node, Finder, Builder) &&
-           InnerMatcher2.matches(Node, Finder, Builder);
+    return Func(ast_type_traits::DynTypedNode::create(Node), Finder, Builder,
+                InnerMatchers);
   }
 
 private:
-  const Matcher<T> InnerMatcher1;
-  const Matcher<T> InnerMatcher2;
+  const VariadicOperatorFunction Func;
+  std::vector<DynTypedMatcher> InnerMatchers;
 };
 
-/// \brief Matches nodes of type T for which at least one of the two provided
-/// matchers matches.
+/// \brief "No argument" placeholder to use as template paratemers.
+struct VariadicOperatorNoArg {};
+
+/// \brief Polymorphic matcher object that uses a \c VariadicOperatorFunction
+///   operator.
 ///
-/// Type arguments MatcherT1 and MatcherT2 are
-/// required by PolymorphicMatcherWithParam2 but not actually
-/// used. They will always be instantiated with types convertible to
-/// Matcher<T>.
-template <typename T, typename MatcherT1, typename MatcherT2>
-class EachOfMatcher : public MatcherInterface<T> {
+/// Input matchers can have any type (including other polymorphic matcher
+/// types), and the actual Matcher<T> is generated on demand with an implicit
+/// coversion operator.
+template <typename P1, typename P2,
+          typename P3 = VariadicOperatorNoArg,
+          typename P4 = VariadicOperatorNoArg,
+          typename P5 = VariadicOperatorNoArg>
+class VariadicOperatorMatcher {
 public:
-  EachOfMatcher(const Matcher<T> &InnerMatcher1,
-                const Matcher<T> &InnerMatcher2)
-      : InnerMatcher1(InnerMatcher1), InnerMatcher2(InnerMatcher2) {
+  VariadicOperatorMatcher(VariadicOperatorFunction Func, const P1 &Param1,
+                          const P2 &Param2,
+                          const P3 &Param3 = VariadicOperatorNoArg(),
+                          const P4 &Param4 = VariadicOperatorNoArg(),
+                          const P5 &Param5 = VariadicOperatorNoArg())
+      : Func(Func), Param1(Param1), Param2(Param2), Param3(Param3),
+        Param4(Param4), Param5(Param5) {}
+
+  template <typename T> operator Matcher<T>() const {
+    Matcher<T> *Array[5];
+    size_t Size = 0;
+
+    addMatcher<T>(Param1, Array, Size);
+    addMatcher<T>(Param2, Array, Size);
+    addMatcher<T>(Param3, Array, Size);
+    addMatcher<T>(Param4, Array, Size);
+    addMatcher<T>(Param5, Array, Size);
+    Matcher<T> Result(new VariadicOperatorMatcherInterface<T>(
+        Func, ArrayRef<const Matcher<T> *>(Array, Size)));
+    for (size_t i = 0, e = Size; i != e; ++i) delete Array[i];
+    return Result;
   }
 
-  virtual bool matches(const T &Node, ASTMatchFinder *Finder,
-                       BoundNodesTreeBuilder *Builder) const {
-    BoundNodesTreeBuilder Builder1;
-    bool Matched1 = InnerMatcher1.matches(Node, Finder, &Builder1);
-    if (Matched1)
-      Builder->addMatch(Builder1.build());
-
-    BoundNodesTreeBuilder Builder2;
-    bool Matched2 = InnerMatcher2.matches(Node, Finder, &Builder2);
-    if (Matched2)
-      Builder->addMatch(Builder2.build());
-
-    return Matched1 || Matched2;
+private:
+  template <typename T>
+  static void addMatcher(const Matcher<T> &M, Matcher<T> **Array,
+                         size_t &Size) {
+    Array[Size++] = new Matcher<T>(M);
   }
 
-private:
-  const Matcher<T> InnerMatcher1;
-  const Matcher<T> InnerMatcher2;
+  /// \brief Overload to ignore \c VariadicOperatorNoArg arguments.
+  template <typename T>
+  static void addMatcher(VariadicOperatorNoArg, Matcher<T> **Array,
+                         size_t &Size) {}
+
+  const VariadicOperatorFunction Func;
+  const P1 Param1;
+  const P2 Param2;
+  const P3 Param3;
+  const P4 Param4;
+  const P5 Param5;
 };
 
-/// \brief Matches nodes of type T for which at least one of the two provided
-/// matchers matches.
+/// \brief Overloaded function object to generate VariadicOperatorMatcher
+///   objects from arbitrary matchers.
 ///
-/// Type arguments MatcherT1 and MatcherT2 are
-/// required by PolymorphicMatcherWithParam2 but not actually
-/// used. They will always be instantiated with types convertible to
-/// Matcher<T>.
-template <typename T, typename MatcherT1, typename MatcherT2>
-class AnyOfMatcher : public MatcherInterface<T> {
-public:
-  AnyOfMatcher(const Matcher<T> &InnerMatcher1, const Matcher<T> &InnerMatcher2)
-      : InnerMatcher1(InnerMatcher1), InnerMatcher2(InnerMatcher2) {}
+/// It supports 2-5 argument overloaded operator(). More can be added if needed.
+struct VariadicOperatorMatcherFunc {
+  VariadicOperatorFunction Func;
 
-  virtual bool matches(const T &Node,
-                       ASTMatchFinder *Finder,
-                       BoundNodesTreeBuilder *Builder) const {
-    return InnerMatcher1.matches(Node, Finder, Builder) ||
-           InnerMatcher2.matches(Node, Finder, Builder);
+  template <typename M1, typename M2>
+  VariadicOperatorMatcher<M1, M2> operator()(const M1 &P1, const M2 &P2) const {
+    return VariadicOperatorMatcher<M1, M2>(Func, P1, P2);
+  }
+  template <typename M1, typename M2, typename M3>
+  VariadicOperatorMatcher<M1, M2, M3> operator()(const M1 &P1, const M2 &P2,
+                                                 const M3 &P3) const {
+    return VariadicOperatorMatcher<M1, M2, M3>(Func, P1, P2, P3);
+  }
+  template <typename M1, typename M2, typename M3, typename M4>
+  VariadicOperatorMatcher<M1, M2, M3, M4>
+  operator()(const M1 &P1, const M2 &P2, const M3 &P3, const M4 &P4) const {
+    return VariadicOperatorMatcher<M1, M2, M3, M4>(Func, P1, P2, P3, P4);
+  }
+  template <typename M1, typename M2, typename M3, typename M4, typename M5>
+  VariadicOperatorMatcher<M1, M2, M3, M4, M5>
+  operator()(const M1 &P1, const M2 &P2, const M3 &P3, const M4 &P4,
+             const M5 &P5) const {
+    return VariadicOperatorMatcher<M1, M2, M3, M4, M5>(Func, P1, P2, P3, P4,
+                                                       P5);
   }
-
-private:
-  const Matcher<T> InnerMatcher1;
-  const Matcher<T> InnerMatcher2;
 };
 
+/// @}
+
+/// \brief Matches nodes for which all provided matchers match.
+bool AllOfVariadicOperator(const ast_type_traits::DynTypedNode DynNode,
+                           ASTMatchFinder *Finder,
+                           BoundNodesTreeBuilder *Builder,
+                           ArrayRef<DynTypedMatcher> InnerMatchers);
+
+/// \brief Matches nodes for which at least one of the provided matchers
+/// matches, but doesn't stop at the first match.
+bool EachOfVariadicOperator(const ast_type_traits::DynTypedNode DynNode,
+                            ASTMatchFinder *Finder,
+                            BoundNodesTreeBuilder *Builder,
+                            ArrayRef<DynTypedMatcher> InnerMatchers);
+
+/// \brief Matches nodes for which at least one of the provided matchers
+/// matches.
+bool AnyOfVariadicOperator(const ast_type_traits::DynTypedNode DynNode,
+                           ASTMatchFinder *Finder,
+                           BoundNodesTreeBuilder *Builder,
+                           ArrayRef<DynTypedMatcher> InnerMatchers);
+
 /// \brief Creates a Matcher<T> that matches if all inner matchers match.
 template<typename T>
 BindableMatcher<T> makeAllOfComposite(
     ArrayRef<const Matcher<T> *> InnerMatchers) {
-  if (InnerMatchers.empty())
-    return BindableMatcher<T>(new TrueMatcher<T>);
-  MatcherInterface<T> *InnerMatcher = new TrueMatcher<T>;
-  for (int i = InnerMatchers.size() - 1; i >= 0; --i) {
-    InnerMatcher = new AllOfMatcher<T, Matcher<T>, Matcher<T> >(
-      *InnerMatchers[i], makeMatcher(InnerMatcher));
-  }
-  return BindableMatcher<T>(InnerMatcher);
+  return BindableMatcher<T>(new VariadicOperatorMatcherInterface<T>(
+      AllOfVariadicOperator, InnerMatchers));
 }
 
 /// \brief Creates a Matcher<T> that matches if
@@ -980,8 +1310,8 @@ BindableMatcher<T> makeAllOfComposite(
 template<typename T, typename InnerT>
 BindableMatcher<T> makeDynCastAllOfComposite(
     ArrayRef<const Matcher<InnerT> *> InnerMatchers) {
-  return BindableMatcher<T>(new DynCastMatcher<T, InnerT>(
-    makeAllOfComposite(InnerMatchers)));
+  return BindableMatcher<T>(DynTypedMatcher(makeAllOfComposite(InnerMatchers))
+                                .unconditionalConvertTo<T>());
 }
 
 /// \brief Matches nodes of type T that have at least one descendant node of
@@ -1233,9 +1563,53 @@ private:
   TypeLoc (T::*TraverseFunction)() const;
 };
 
-template <typename T, typename InnerT>
-T makeTypeAllOfComposite(ArrayRef<const Matcher<InnerT> *> InnerMatchers) {
-  return T(makeAllOfComposite<InnerT>(InnerMatchers));
+/// \brief Converts a \c Matcher<InnerT> to a \c Matcher<OuterT>, where
+/// \c OuterT is any type that is supported by \c Getter.
+///
+/// \code Getter<OuterT>::value() \endcode returns a
+/// \code InnerTBase (OuterT::*)() \endcode, which is used to adapt a \c OuterT
+/// object into a \c InnerT
+template <typename InnerTBase,
+          template <typename OuterT> class Getter,
+          template <typename OuterT> class MatcherImpl,
+          typename ReturnTypesF>
+class TypeTraversePolymorphicMatcher {
+private:
+  typedef TypeTraversePolymorphicMatcher<InnerTBase, Getter, MatcherImpl,
+                                         ReturnTypesF> Self;
+  static Self create(ArrayRef<const Matcher<InnerTBase> *> InnerMatchers);
+
+public:
+  typedef typename ExtractFunctionArgMeta<ReturnTypesF>::type ReturnTypes;
+
+  explicit TypeTraversePolymorphicMatcher(
+      ArrayRef<const Matcher<InnerTBase> *> InnerMatchers)
+      : InnerMatcher(makeAllOfComposite(InnerMatchers)) {}
+
+  template <typename OuterT> operator Matcher<OuterT>() const {
+    return Matcher<OuterT>(
+        new MatcherImpl<OuterT>(InnerMatcher, Getter<OuterT>::value()));
+  }
+
+  struct Func : public llvm::VariadicFunction<Self, Matcher<InnerTBase>,
+                                              &Self::create> {
+    Func() {}
+  };
+
+private:
+  const Matcher<InnerTBase> InnerMatcher;
+};
+
+// Define the create() method out of line to silence a GCC warning about
+// the struct "Func" having greater visibility than its base, which comes from
+// using the flag -fvisibility-inlines-hidden.
+template <typename InnerTBase, template <typename OuterT> class Getter,
+          template <typename OuterT> class MatcherImpl, typename ReturnTypesF>
+TypeTraversePolymorphicMatcher<InnerTBase, Getter, MatcherImpl, ReturnTypesF>
+TypeTraversePolymorphicMatcher<
+    InnerTBase, Getter, MatcherImpl,
+    ReturnTypesF>::create(ArrayRef<const Matcher<InnerTBase> *> InnerMatchers) {
+  return Self(InnerMatchers);
 }
 
 } // end namespace internal
diff --git a/include/clang/ASTMatchers/ASTMatchersMacros.h b/include/clang/ASTMatchers/ASTMatchersMacros.h
index f5ca26bca73c..b5d530312515 100644
--- a/include/clang/ASTMatchers/ASTMatchersMacros.h
+++ b/include/clang/ASTMatchers/ASTMatchersMacros.h
@@ -49,23 +49,19 @@
 ///
 /// The code should return true if 'Node' matches.
 #define AST_MATCHER(Type, DefineMatcher)                                       \
-  AST_MATCHER_OVERLOAD(Type, DefineMatcher, 0)
-
-#define AST_MATCHER_OVERLOAD(Type, DefineMatcher, OverloadId)                  \
   namespace internal {                                                         \
-  class matcher_##DefineMatcher##OverloadId##Matcher                           \
-      : public MatcherInterface<Type> {                                        \
+  class matcher_##DefineMatcher##Matcher : public MatcherInterface<Type> {     \
   public:                                                                      \
-    explicit matcher_##DefineMatcher##OverloadId##Matcher() {}                 \
+    explicit matcher_##DefineMatcher##Matcher() {}                             \
     virtual bool matches(const Type &Node, ASTMatchFinder *Finder,             \
                          BoundNodesTreeBuilder *Builder) const;                \
   };                                                                           \
   }                                                                            \
   inline internal::Matcher<Type> DefineMatcher() {                             \
     return internal::makeMatcher(                                              \
-        new internal::matcher_##DefineMatcher##OverloadId##Matcher());         \
+        new internal::matcher_##DefineMatcher##Matcher());                     \
   }                                                                            \
-  inline bool internal::matcher_##DefineMatcher##OverloadId##Matcher::matches( \
+  inline bool internal::matcher_##DefineMatcher##Matcher::matches(             \
       const Type &Node, ASTMatchFinder *Finder,                                \
       BoundNodesTreeBuilder *Builder) const
 
@@ -93,10 +89,10 @@
   public:                                                                      \
     explicit matcher_##DefineMatcher##OverloadId##Matcher(                     \
         const ParamType &A##Param)                                             \
-        : Param(A##Param) {                                                    \
-    }                                                                          \
+        : Param(A##Param) {}                                                   \
     virtual bool matches(const Type &Node, ASTMatchFinder *Finder,             \
                          BoundNodesTreeBuilder *Builder) const;                \
+                                                                               \
   private:                                                                     \
     const ParamType Param;                                                     \
   };                                                                           \
@@ -105,6 +101,8 @@
     return internal::makeMatcher(                                              \
         new internal::matcher_##DefineMatcher##OverloadId##Matcher(Param));    \
   }                                                                            \
+  typedef internal::Matcher<Type>(&DefineMatcher##_Type##OverloadId)(          \
+      const ParamType &Param);                                                 \
   inline bool internal::matcher_##DefineMatcher##OverloadId##Matcher::matches( \
       const Type &Node, ASTMatchFinder *Finder,                                \
       BoundNodesTreeBuilder *Builder) const
@@ -136,53 +134,70 @@
   public:                                                                      \
     matcher_##DefineMatcher##OverloadId##Matcher(const ParamType1 &A##Param1,  \
                                                  const ParamType2 &A##Param2)  \
-        : Param1(A##Param1), Param2(A##Param2) {                               \
-    }                                                                          \
+        : Param1(A##Param1), Param2(A##Param2) {}                              \
     virtual bool matches(const Type &Node, ASTMatchFinder *Finder,             \
                          BoundNodesTreeBuilder *Builder) const;                \
+                                                                               \
   private:                                                                     \
     const ParamType1 Param1;                                                   \
     const ParamType2 Param2;                                                   \
   };                                                                           \
   }                                                                            \
-  inline internal::Matcher<Type>                                               \
-  DefineMatcher(const ParamType1 &Param1, const ParamType2 &Param2) {          \
+  inline internal::Matcher<Type> DefineMatcher(const ParamType1 &Param1,       \
+                                               const ParamType2 &Param2) {     \
     return internal::makeMatcher(                                              \
         new internal::matcher_##DefineMatcher##OverloadId##Matcher(Param1,     \
                                                                    Param2));   \
   }                                                                            \
+  typedef internal::Matcher<Type>(&DefineMatcher##_Type##OverloadId)(          \
+      const ParamType1 &Param1, const ParamType2 &Param2);                     \
   inline bool internal::matcher_##DefineMatcher##OverloadId##Matcher::matches( \
       const Type &Node, ASTMatchFinder *Finder,                                \
       BoundNodesTreeBuilder *Builder) const
 
+/// \brief Construct a type-list to be passed to the AST_POLYMORPHIC_MATCHER*
+///   macros.
+///
+/// You can't pass something like \c TypeList<Foo, Bar> to a macro, because it
+/// will look at that as two arguments. However, you can pass
+/// \c void(TypeList<Foo, Bar>), which works thanks to the parenthesis.
+/// The \c PolymorphicMatcherWithParam* classes will unpack the function type to
+/// extract the TypeList object.
+#define AST_POLYMORPHIC_SUPPORTED_TYPES_1(t1) void(internal::TypeList<t1>)
+#define AST_POLYMORPHIC_SUPPORTED_TYPES_2(t1, t2)                              \
+  void(internal::TypeList<t1, t2>)
+#define AST_POLYMORPHIC_SUPPORTED_TYPES_3(t1, t2, t3)                          \
+  void(internal::TypeList<t1, t2, t3>)
+#define AST_POLYMORPHIC_SUPPORTED_TYPES_4(t1, t2, t3, t4)                      \
+  void(internal::TypeList<t1, t2, t3, t4>)
+#define AST_POLYMORPHIC_SUPPORTED_TYPES_5(t1, t2, t3, t4, t5)                  \
+  void(internal::TypeList<t1, t2, t3, internal::TypeList<t4, t5> >)
+
 /// \brief AST_POLYMORPHIC_MATCHER(DefineMatcher) { ... }
 /// defines a single-parameter function named DefineMatcher() that is
 /// polymorphic in the return type.
 ///
 /// The variables are the same as for AST_MATCHER, but NodeType will be deduced
 /// from the calling context.
-#define AST_POLYMORPHIC_MATCHER(DefineMatcher)                                 \
-  AST_POLYMORPHIC_MATCHER_OVERLOAD(DefineMatcher, 0)
-
-#define AST_POLYMORPHIC_MATCHER_OVERLOAD(DefineMatcher, OverloadId)            \
+#define AST_POLYMORPHIC_MATCHER(DefineMatcher, ReturnTypesF)                   \
   namespace internal {                                                         \
   template <typename NodeType>                                                 \
-  class matcher_##DefineMatcher##OverloadId##Matcher                           \
-      : public MatcherInterface<NodeType> {                                    \
+  class matcher_##DefineMatcher##Matcher : public MatcherInterface<NodeType> { \
   public:                                                                      \
     virtual bool matches(const NodeType &Node, ASTMatchFinder *Finder,         \
                          BoundNodesTreeBuilder *Builder) const;                \
   };                                                                           \
   }                                                                            \
   inline internal::PolymorphicMatcherWithParam0<                               \
-      internal::matcher_##DefineMatcher##OverloadId##Matcher> DefineMatcher() {\
+      internal::matcher_##DefineMatcher##Matcher, ReturnTypesF>                \
+  DefineMatcher() {                                                            \
     return internal::PolymorphicMatcherWithParam0<                             \
-        internal::matcher_##DefineMatcher##OverloadId##Matcher>();             \
+        internal::matcher_##DefineMatcher##Matcher, ReturnTypesF>();           \
   }                                                                            \
   template <typename NodeType>                                                 \
-  bool internal::matcher_##DefineMatcher##OverloadId##Matcher<                 \
-      NodeType>::matches(const NodeType &Node, ASTMatchFinder *Finder,         \
-                         BoundNodesTreeBuilder *Builder) const
+  bool internal::matcher_##DefineMatcher##Matcher<NodeType>::matches(          \
+      const NodeType &Node, ASTMatchFinder *Finder,                            \
+      BoundNodesTreeBuilder *Builder) const
 
 /// \brief AST_POLYMORPHIC_MATCHER_P(DefineMatcher, ParamType, Param) { ... }
 /// defines a single-parameter function named DefineMatcher() that is
@@ -193,11 +208,13 @@
 /// of the matcher Matcher<NodeType> returned by the function matcher().
 ///
 /// FIXME: Pull out common code with above macro?
-#define AST_POLYMORPHIC_MATCHER_P(DefineMatcher, ParamType, Param)             \
-  AST_POLYMORPHIC_MATCHER_P_OVERLOAD(DefineMatcher, ParamType, Param, 0)
+#define AST_POLYMORPHIC_MATCHER_P(DefineMatcher, ReturnTypesF, ParamType,      \
+                                  Param)                                       \
+  AST_POLYMORPHIC_MATCHER_P_OVERLOAD(DefineMatcher, ReturnTypesF, ParamType,   \
+                                     Param, 0)
 
-#define AST_POLYMORPHIC_MATCHER_P_OVERLOAD(DefineMatcher, ParamType, Param,    \
-                                           OverloadId)                         \
+#define AST_POLYMORPHIC_MATCHER_P_OVERLOAD(DefineMatcher, ReturnTypesF,        \
+                                           ParamType, Param, OverloadId)       \
   namespace internal {                                                         \
   template <typename NodeType, typename ParamT>                                \
   class matcher_##DefineMatcher##OverloadId##Matcher                           \
@@ -205,21 +222,25 @@
   public:                                                                      \
     explicit matcher_##DefineMatcher##OverloadId##Matcher(                     \
         const ParamType &A##Param)                                             \
-        : Param(A##Param) {                                                    \
-    }                                                                          \
+        : Param(A##Param) {}                                                   \
     virtual bool matches(const NodeType &Node, ASTMatchFinder *Finder,         \
                          BoundNodesTreeBuilder *Builder) const;                \
+                                                                               \
   private:                                                                     \
     const ParamType Param;                                                     \
   };                                                                           \
   }                                                                            \
   inline internal::PolymorphicMatcherWithParam1<                               \
-      internal::matcher_##DefineMatcher##OverloadId##Matcher, ParamType>       \
-  DefineMatcher(const ParamType &Param) {                                      \
+      internal::matcher_##DefineMatcher##OverloadId##Matcher, ParamType,       \
+      ReturnTypesF> DefineMatcher(const ParamType &Param) {                    \
     return internal::PolymorphicMatcherWithParam1<                             \
-        internal::matcher_##DefineMatcher##OverloadId##Matcher, ParamType>(    \
-        Param);                                                                \
+        internal::matcher_##DefineMatcher##OverloadId##Matcher, ParamType,     \
+        ReturnTypesF>(Param);                                                  \
   }                                                                            \
+  typedef internal::PolymorphicMatcherWithParam1<                              \
+      internal::matcher_##DefineMatcher##OverloadId##Matcher, ParamType,       \
+      ReturnTypesF>(&DefineMatcher##_Type##OverloadId)(                        \
+      const ParamType &Param);                                                 \
   template <typename NodeType, typename ParamT>                                \
   bool internal::matcher_##DefineMatcher##OverloadId##Matcher<                 \
       NodeType, ParamT>::matches(const NodeType &Node, ASTMatchFinder *Finder, \
@@ -233,13 +254,14 @@
 /// The variables are the same as for AST_MATCHER_P2, with the
 /// addition of NodeType, which specifies the node type of the matcher
 /// Matcher<NodeType> returned by the function DefineMatcher().
-#define AST_POLYMORPHIC_MATCHER_P2(DefineMatcher, ParamType1, Param1,          \
-                                   ParamType2, Param2)                         \
-  AST_POLYMORPHIC_MATCHER_P2_OVERLOAD(DefineMatcher, ParamType1, Param1,       \
-                                      ParamType2, Param2, 0)
+#define AST_POLYMORPHIC_MATCHER_P2(DefineMatcher, ReturnTypesF, ParamType1,    \
+                                   Param1, ParamType2, Param2)                 \
+  AST_POLYMORPHIC_MATCHER_P2_OVERLOAD(DefineMatcher, ReturnTypesF, ParamType1, \
+                                      Param1, ParamType2, Param2, 0)
 
-#define AST_POLYMORPHIC_MATCHER_P2_OVERLOAD(DefineMatcher, ParamType1, Param1, \
-                                            ParamType2, Param2, OverloadId)    \
+#define AST_POLYMORPHIC_MATCHER_P2_OVERLOAD(DefineMatcher, ReturnTypesF,       \
+                                            ParamType1, Param1, ParamType2,    \
+                                            Param2, OverloadId)                \
   namespace internal {                                                         \
   template <typename NodeType, typename ParamT1, typename ParamT2>             \
   class matcher_##DefineMatcher##OverloadId##Matcher                           \
@@ -247,10 +269,10 @@
   public:                                                                      \
     matcher_##DefineMatcher##OverloadId##Matcher(const ParamType1 &A##Param1,  \
                                                  const ParamType2 &A##Param2)  \
-        : Param1(A##Param1), Param2(A##Param2) {                               \
-    }                                                                          \
+        : Param1(A##Param1), Param2(A##Param2) {}                              \
     virtual bool matches(const NodeType &Node, ASTMatchFinder *Finder,         \
                          BoundNodesTreeBuilder *Builder) const;                \
+                                                                               \
   private:                                                                     \
     const ParamType1 Param1;                                                   \
     const ParamType2 Param2;                                                   \
@@ -258,12 +280,16 @@
   }                                                                            \
   inline internal::PolymorphicMatcherWithParam2<                               \
       internal::matcher_##DefineMatcher##OverloadId##Matcher, ParamType1,      \
-      ParamType2>                                                              \
-  DefineMatcher(const ParamType1 &Param1, const ParamType2 &Param2) {          \
+      ParamType2, ReturnTypesF> DefineMatcher(const ParamType1 &Param1,        \
+                                              const ParamType2 &Param2) {      \
     return internal::PolymorphicMatcherWithParam2<                             \
         internal::matcher_##DefineMatcher##OverloadId##Matcher, ParamType1,    \
-        ParamType2>(Param1, Param2);                                           \
+        ParamType2, ReturnTypesF>(Param1, Param2);                             \
   }                                                                            \
+  typedef internal::PolymorphicMatcherWithParam2<                              \
+      internal::matcher_##DefineMatcher##OverloadId##Matcher, ParamType1,      \
+      ParamType2, ReturnTypesF>(&DefineMatcher##_Type##OverloadId)(            \
+      const ParamType1 &Param1, const ParamType2 &Param2);                     \
   template <typename NodeType, typename ParamT1, typename ParamT2>             \
   bool internal::matcher_##DefineMatcher##OverloadId##Matcher<                 \
       NodeType, ParamT1, ParamT2>::matches(                                    \
@@ -282,64 +308,29 @@
 /// to another.
 ///
 /// For a specific \c SpecificType, the traversal is done using 
-/// \c SpecificType::FunctionName. The existance of such a function determines
+/// \c SpecificType::FunctionName. The existence of such a function determines
 /// whether a corresponding matcher can be used on \c SpecificType.
-#define AST_TYPE_TRAVERSE_MATCHER(MatcherName, FunctionName)                   \
-  class Polymorphic##MatcherName##TypeMatcher {                                \
-  public:                                                                      \
-    Polymorphic##MatcherName##TypeMatcher(                                     \
-        const internal::Matcher<QualType> &InnerMatcher)                       \
-        : InnerMatcher(InnerMatcher) {                                         \
-    }                                                                          \
-    template <typename T> operator internal:: Matcher< T>() {                  \
-      return internal::Matcher<T>(new internal::TypeTraverseMatcher<T>(        \
-                                          InnerMatcher, &T::FunctionName));    \
-    }                                                                          \
-  private:                                                                     \
-    const internal::Matcher<QualType> InnerMatcher;                            \
-  }                                                                            \
-  ;                                                                            \
-  class Variadic##MatcherName##TypeTraverseMatcher                             \
-      : public llvm::VariadicFunction<                                         \
-          Polymorphic##MatcherName##TypeMatcher, internal::Matcher<QualType>,  \
-          internal::makeTypeAllOfComposite<                                    \
-              Polymorphic##MatcherName##TypeMatcher, QualType> > {             \
-  public:                                                                      \
-    Variadic##MatcherName##TypeTraverseMatcher() {                             \
-    }                                                                          \
+#define AST_TYPE_TRAVERSE_MATCHER(MatcherName, FunctionName, ReturnTypesF)     \
+  namespace internal {                                                         \
+  template <typename T> struct TypeMatcher##MatcherName##Getter {              \
+    static QualType (T::*value())() const { return &T::FunctionName; }         \
+  };                                                                           \
   }                                                                            \
-  ;                                                                            \
-  const Variadic##MatcherName##TypeTraverseMatcher MatcherName
+  const internal::TypeTraversePolymorphicMatcher<                              \
+      QualType, internal::TypeMatcher##MatcherName##Getter,                    \
+      internal::TypeTraverseMatcher, ReturnTypesF>::Func MatcherName
 
 /// \brief AST_TYPELOC_TRAVERSE_MATCHER(MatcherName, FunctionName) works
 /// identical to \c AST_TYPE_TRAVERSE_MATCHER but operates on \c TypeLocs.
-#define AST_TYPELOC_TRAVERSE_MATCHER(MatcherName, FunctionName)                \
-  class Polymorphic##MatcherName##TypeLocMatcher {                             \
-  public:                                                                      \
-    Polymorphic##MatcherName##TypeLocMatcher(                                  \
-        const internal::Matcher<TypeLoc> &InnerMatcher)                        \
-        : InnerMatcher(InnerMatcher) {                                         \
-    }                                                                          \
-    template <typename T> operator internal:: Matcher< T>() {                  \
-      return internal::Matcher<T>(                                             \
-          new internal::TypeLocTraverseMatcher<T>(InnerMatcher,                \
-                                                  &T::FunctionName##Loc));     \
-    }                                                                          \
-  private:                                                                     \
-    const internal::Matcher<TypeLoc> InnerMatcher;                             \
-  }                                                                            \
-  ;                                                                            \
-  class Variadic##MatcherName##TypeLocTraverseMatcher                          \
-      : public llvm::VariadicFunction<                                         \
-          Polymorphic##MatcherName##TypeLocMatcher, internal::Matcher<TypeLoc>,\
-          internal::makeTypeAllOfComposite<                                    \
-              Polymorphic##MatcherName##TypeLocMatcher, TypeLoc> > {           \
-  public:                                                                      \
-    Variadic##MatcherName##TypeLocTraverseMatcher() {                          \
-    }                                                                          \
+#define AST_TYPELOC_TRAVERSE_MATCHER(MatcherName, FunctionName, ReturnTypesF)  \
+  namespace internal {                                                         \
+  template <typename T> struct TypeLocMatcher##MatcherName##Getter {           \
+    static TypeLoc (T::*value())() const { return &T::FunctionName##Loc; }     \
+  };                                                                           \
   }                                                                            \
-  ;                                                                            \
-  const Variadic##MatcherName##TypeLocTraverseMatcher MatcherName##Loc;        \
-  AST_TYPE_TRAVERSE_MATCHER(MatcherName, FunctionName##Type)
+  const internal::TypeTraversePolymorphicMatcher<                              \
+      TypeLoc, internal::TypeLocMatcher##MatcherName##Getter,                  \
+      internal::TypeLocTraverseMatcher, ReturnTypesF>::Func MatcherName##Loc;  \
+  AST_TYPE_TRAVERSE_MATCHER(MatcherName, FunctionName##Type, ReturnTypesF)
 
 #endif // LLVM_CLANG_AST_MATCHERS_AST_MATCHERS_MACROS_H
diff --git a/include/clang/ASTMatchers/Dynamic/Diagnostics.h b/include/clang/ASTMatchers/Dynamic/Diagnostics.h
new file mode 100644
index 000000000000..aec0c0e31ce2
--- /dev/null
+++ b/include/clang/ASTMatchers/Dynamic/Diagnostics.h
@@ -0,0 +1,185 @@
+//===--- Diagnostics.h - Helper class for error diagnostics -----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// \brief Diagnostics class to manage error messages.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_AST_MATCHERS_DYNAMIC_DIAGNOSTICS_H
+#define LLVM_CLANG_AST_MATCHERS_DYNAMIC_DIAGNOSTICS_H
+
+#include <string>
+#include <vector>
+
+#include "clang/ASTMatchers/Dynamic/VariantValue.h"
+#include "clang/Basic/LLVM.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/Twine.h"
+#include "llvm/Support/raw_ostream.h"
+
+namespace clang {
+namespace ast_matchers {
+namespace dynamic {
+
+struct SourceLocation {
+  SourceLocation() : Line(), Column() {}
+  unsigned Line;
+  unsigned Column;
+};
+
+struct SourceRange {
+  SourceLocation Start;
+  SourceLocation End;
+};
+
+/// \brief A VariantValue instance annotated with its parser context.
+struct ParserValue {
+  ParserValue() : Text(), Range(), Value() {}
+  StringRef Text;
+  SourceRange Range;
+  VariantValue Value;
+};
+
+/// \brief Helper class to manage error messages.
+class Diagnostics {
+public:
+  /// \brief Parser context types.
+  enum ContextType {
+    CT_MatcherArg = 0,
+    CT_MatcherConstruct = 1
+  };
+
+  /// \brief All errors from the system.
+  enum ErrorType {
+    ET_None = 0,
+
+    ET_RegistryNotFound = 1,
+    ET_RegistryWrongArgCount = 2,
+    ET_RegistryWrongArgType = 3,
+    ET_RegistryNotBindable = 4,
+    ET_RegistryAmbiguousOverload = 5,
+
+    ET_ParserStringError = 100,
+    ET_ParserNoOpenParen = 101,
+    ET_ParserNoCloseParen = 102,
+    ET_ParserNoComma = 103,
+    ET_ParserNoCode = 104,
+    ET_ParserNotAMatcher = 105,
+    ET_ParserInvalidToken = 106,
+    ET_ParserMalformedBindExpr = 107,
+    ET_ParserTrailingCode = 108,
+    ET_ParserUnsignedError = 109,
+    ET_ParserOverloadedType = 110
+  };
+
+  /// \brief Helper stream class.
+  class ArgStream {
+  public:
+    ArgStream(std::vector<std::string> *Out) : Out(Out) {}
+    template <class T> ArgStream &operator<<(const T &Arg) {
+      return operator<<(Twine(Arg));
+    }
+    ArgStream &operator<<(const Twine &Arg);
+
+  private:
+    std::vector<std::string> *Out;
+  };
+
+  /// \brief Class defining a parser context.
+  ///
+  /// Used by the parser to specify (possibly recursive) contexts where the
+  /// parsing/construction can fail. Any error triggered within a context will
+  /// keep information about the context chain.
+  /// This class should be used as a RAII instance in the stack.
+  struct Context {
+  public:
+    /// \brief About to call the constructor for a matcher.
+    enum ConstructMatcherEnum { ConstructMatcher };
+    Context(ConstructMatcherEnum, Diagnostics *Error, StringRef MatcherName,
+            const SourceRange &MatcherRange);
+    /// \brief About to recurse into parsing one argument for a matcher.
+    enum MatcherArgEnum { MatcherArg };
+    Context(MatcherArgEnum, Diagnostics *Error, StringRef MatcherName,
+            const SourceRange &MatcherRange, unsigned ArgNumber);
+    ~Context();
+
+  private:
+    Diagnostics *const Error;
+  };
+
+  /// \brief Context for overloaded matcher construction.
+  ///
+  /// This context will take care of merging all errors that happen within it
+  /// as "candidate" overloads for the same matcher.
+  struct OverloadContext {
+  public:
+   OverloadContext(Diagnostics* Error);
+   ~OverloadContext();
+
+   /// \brief Revert all errors that happened within this context.
+   void revertErrors();
+
+  private:
+    Diagnostics *const Error;
+    unsigned BeginIndex;
+  };
+
+  /// \brief Add an error to the diagnostics.
+  ///
+  /// All the context information will be kept on the error message.
+  /// \return a helper class to allow the caller to pass the arguments for the
+  /// error message, using the << operator.
+  ArgStream addError(const SourceRange &Range, ErrorType Error);
+
+  /// \brief Information stored for one frame of the context.
+  struct ContextFrame {
+    ContextType Type;
+    SourceRange Range;
+    std::vector<std::string> Args;
+  };
+
+  /// \brief Information stored for each error found.
+  struct ErrorContent {
+    std::vector<ContextFrame> ContextStack;
+    struct Message {
+      SourceRange Range;
+      ErrorType Type;
+      std::vector<std::string> Args;
+    };
+    std::vector<Message> Messages;
+  };
+  ArrayRef<ErrorContent> errors() const { return Errors; }
+
+  /// \brief Returns a simple string representation of each error.
+  ///
+  /// Each error only shows the error message without any context.
+  void printToStream(llvm::raw_ostream &OS) const;
+  std::string toString() const;
+
+  /// \brief Returns the full string representation of each error.
+  ///
+  /// Each error message contains the full context.
+  void printToStreamFull(llvm::raw_ostream &OS) const;
+  std::string toStringFull() const;
+
+private:
+  /// \brief Helper function used by the constructors of ContextFrame.
+  ArgStream pushContextFrame(ContextType Type, SourceRange Range);
+
+  std::vector<ContextFrame> ContextStack;
+  std::vector<ErrorContent> Errors;
+};
+
+}  // namespace dynamic
+}  // namespace ast_matchers
+}  // namespace clang
+
+#endif  // LLVM_CLANG_AST_MATCHERS_DYNAMIC_DIAGNOSTICS_H
diff --git a/include/clang/ASTMatchers/Dynamic/Parser.h b/include/clang/ASTMatchers/Dynamic/Parser.h
new file mode 100644
index 000000000000..bb6ac76989d0
--- /dev/null
+++ b/include/clang/ASTMatchers/Dynamic/Parser.h
@@ -0,0 +1,151 @@
+//===--- Parser.h - Matcher expression parser -----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// \brief Simple matcher expression parser.
+///
+/// The parser understands matcher expressions of the form:
+///   MatcherName(Arg0, Arg1, ..., ArgN)
+/// as well as simple types like strings.
+/// The parser does not know how to process the matchers. It delegates this task
+/// to a Sema object received as an argument.
+///
+/// \code
+/// Grammar for the expressions supported:
+/// <Expression>        := <Literal> | <MatcherExpression>
+/// <Literal>           := <StringLiteral> | <Unsigned>
+/// <StringLiteral>     := "quoted string"
+/// <Unsigned>          := [0-9]+
+/// <MatcherExpression> := <MatcherName>(<ArgumentList>) |
+///                        <MatcherName>(<ArgumentList>).bind(<StringLiteral>)
+/// <MatcherName>       := [a-zA-Z]+
+/// <ArgumentList>      := <Expression> | <Expression>,<ArgumentList>
+/// \endcode
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_AST_MATCHERS_DYNAMIC_PARSER_H
+#define LLVM_CLANG_AST_MATCHERS_DYNAMIC_PARSER_H
+
+#include "clang/ASTMatchers/Dynamic/Diagnostics.h"
+#include "clang/ASTMatchers/Dynamic/VariantValue.h"
+#include "clang/Basic/LLVM.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/Optional.h"
+#include "llvm/ADT/StringRef.h"
+
+namespace clang {
+namespace ast_matchers {
+namespace dynamic {
+
+/// \brief Matcher expression parser.
+class Parser {
+public:
+  /// \brief Interface to connect the parser with the registry and more.
+  ///
+  /// The parser uses the Sema instance passed into
+  /// parseMatcherExpression() to handle all matcher tokens. The simplest
+  /// processor implementation would simply call into the registry to create
+  /// the matchers.
+  /// However, a more complex processor might decide to intercept the matcher
+  /// creation and do some extra work. For example, it could apply some
+  /// transformation to the matcher by adding some id() nodes, or could detect
+  /// specific matcher nodes for more efficient lookup.
+  class Sema {
+  public:
+    virtual ~Sema();
+
+    /// \brief Process a matcher expression.
+    ///
+    /// All the arguments passed here have already been processed.
+    ///
+    /// \param MatcherName The matcher name found by the parser.
+    ///
+    /// \param NameRange The location of the name in the matcher source.
+    ///   Useful for error reporting.
+    ///
+    /// \param BindID The ID to use to bind the matcher, or a null \c StringRef
+    ///   if no ID is specified.
+    ///
+    /// \param Args The argument list for the matcher.
+    ///
+    /// \return The matcher objects constructed by the processor, or a null
+    ///   matcher if an error occurred. In that case, \c Error will contain a
+    ///   description of the error.
+    virtual VariantMatcher actOnMatcherExpression(StringRef MatcherName,
+                                                  const SourceRange &NameRange,
+                                                  StringRef BindID,
+                                                  ArrayRef<ParserValue> Args,
+                                                  Diagnostics *Error) = 0;
+  };
+
+  /// \brief Parse a matcher expression, creating matchers from the registry.
+  ///
+  /// This overload creates matchers calling directly into the registry. If the
+  /// caller needs more control over how the matchers are created, then it can
+  /// use the overload below that takes a Sema.
+  ///
+  /// \param MatcherCode The matcher expression to parse.
+  ///
+  /// \return The matcher object constructed, or an empty Optional if an error
+  ///   occurred.
+  ///   In that case, \c Error will contain a description of the error.
+  ///   The caller takes ownership of the DynTypedMatcher object returned.
+  static llvm::Optional<DynTypedMatcher>
+  parseMatcherExpression(StringRef MatcherCode, Diagnostics *Error);
+
+  /// \brief Parse a matcher expression.
+  ///
+  /// \param MatcherCode The matcher expression to parse.
+  ///
+  /// \param S The Sema instance that will help the parser
+  ///   construct the matchers.
+  /// \return The matcher object constructed by the processor, or an empty
+  ///   Optional if an error occurred. In that case, \c Error will contain a
+  ///   description of the error.
+  ///   The caller takes ownership of the DynTypedMatcher object returned.
+  static llvm::Optional<DynTypedMatcher>
+  parseMatcherExpression(StringRef MatcherCode, Sema *S, Diagnostics *Error);
+
+  /// \brief Parse an expression, creating matchers from the registry.
+  ///
+  /// Parses any expression supported by this parser. In general, the
+  /// \c parseMatcherExpression function is a better approach to get a matcher
+  /// object.
+  static bool parseExpression(StringRef Code, VariantValue *Value,
+                              Diagnostics *Error);
+
+  /// \brief Parse an expression.
+  ///
+  /// Parses any expression supported by this parser. In general, the
+  /// \c parseMatcherExpression function is a better approach to get a matcher
+  /// object.
+  static bool parseExpression(StringRef Code, Sema *S,
+                              VariantValue *Value, Diagnostics *Error);
+
+private:
+  class CodeTokenizer;
+  struct TokenInfo;
+
+  Parser(CodeTokenizer *Tokenizer, Sema *S,
+         Diagnostics *Error);
+
+  bool parseExpressionImpl(VariantValue *Value);
+  bool parseMatcherExpressionImpl(VariantValue *Value);
+
+  CodeTokenizer *const Tokenizer;
+  Sema *const S;
+  Diagnostics *const Error;
+};
+
+}  // namespace dynamic
+}  // namespace ast_matchers
+}  // namespace clang
+
+#endif  // LLVM_CLANG_AST_MATCHERS_DYNAMIC_PARSER_H
diff --git a/include/clang/ASTMatchers/Dynamic/Registry.h b/include/clang/ASTMatchers/Dynamic/Registry.h
new file mode 100644
index 000000000000..c113c1404ef0
--- /dev/null
+++ b/include/clang/ASTMatchers/Dynamic/Registry.h
@@ -0,0 +1,75 @@
+//===--- Registry.h - Matcher registry -----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// \brief Registry of all known matchers.
+///
+/// The registry provides a generic interface to construct any matcher by name.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_AST_MATCHERS_DYNAMIC_REGISTRY_H
+#define LLVM_CLANG_AST_MATCHERS_DYNAMIC_REGISTRY_H
+
+#include "clang/ASTMatchers/Dynamic/Diagnostics.h"
+#include "clang/ASTMatchers/Dynamic/VariantValue.h"
+#include "clang/Basic/LLVM.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/StringRef.h"
+
+namespace clang {
+namespace ast_matchers {
+namespace dynamic {
+
+class Registry {
+public:
+  /// \brief Construct a matcher from the registry by name.
+  ///
+  /// Consult the registry of known matchers and construct the appropriate
+  /// matcher by name.
+  ///
+  /// \param MatcherName The name of the matcher to instantiate.
+  ///
+  /// \param NameRange The location of the name in the matcher source.
+  ///   Useful for error reporting.
+  ///
+  /// \param Args The argument list for the matcher. The number and types of the
+  ///   values must be valid for the matcher requested. Otherwise, the function
+  ///   will return an error.
+  ///
+  /// \return The matcher object constructed if no error was found.
+  ///   A null matcher if the matcher is not found, or if the number of
+  ///   arguments or argument types do not match the signature.
+  ///   In that case \c Error will contain the description of the error.
+  static VariantMatcher constructMatcher(StringRef MatcherName,
+                                         const SourceRange &NameRange,
+                                         ArrayRef<ParserValue> Args,
+                                         Diagnostics *Error);
+
+  /// \brief Construct a matcher from the registry and bind it.
+  ///
+  /// Similar the \c constructMatcher() above, but it then tries to bind the
+  /// matcher to the specified \c BindID.
+  /// If the matcher is not bindable, it sets an error in \c Error and returns
+  /// a null matcher.
+  static VariantMatcher constructBoundMatcher(StringRef MatcherName,
+                                              const SourceRange &NameRange,
+                                              StringRef BindID,
+                                              ArrayRef<ParserValue> Args,
+                                              Diagnostics *Error);
+
+private:
+  Registry() LLVM_DELETED_FUNCTION;
+};
+
+}  // namespace dynamic
+}  // namespace ast_matchers
+}  // namespace clang
+
+#endif  // LLVM_CLANG_AST_MATCHERS_DYNAMIC_REGISTRY_H
diff --git a/include/clang/ASTMatchers/Dynamic/VariantValue.h b/include/clang/ASTMatchers/Dynamic/VariantValue.h
new file mode 100644
index 000000000000..b9bc017a48c0
--- /dev/null
+++ b/include/clang/ASTMatchers/Dynamic/VariantValue.h
@@ -0,0 +1,261 @@
+//===--- VariantValue.h - Polymorphic value type -*- C++ -*-===/
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// \brief Polymorphic value type.
+///
+/// Supports all the types required for dynamic Matcher construction.
+///  Used by the registry to construct matchers in a generic way.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_AST_MATCHERS_DYNAMIC_VARIANT_VALUE_H
+#define LLVM_CLANG_AST_MATCHERS_DYNAMIC_VARIANT_VALUE_H
+
+#include <vector>
+
+#include "clang/ASTMatchers/ASTMatchers.h"
+#include "clang/ASTMatchers/ASTMatchersInternal.h"
+#include "llvm/ADT/IntrusiveRefCntPtr.h"
+#include "llvm/ADT/Optional.h"
+#include "llvm/ADT/Twine.h"
+#include "llvm/Support/type_traits.h"
+
+namespace clang {
+namespace ast_matchers {
+namespace dynamic {
+
+using ast_matchers::internal::DynTypedMatcher;
+
+/// \brief A variant matcher object.
+///
+/// The purpose of this object is to abstract simple and polymorphic matchers
+/// into a single object type.
+/// Polymorphic matchers might be implemented as a list of all the possible
+/// overloads of the matcher. \c VariantMatcher knows how to select the
+/// appropriate overload when needed.
+/// To get a real matcher object out of a \c VariantMatcher you can do:
+///  - getSingleMatcher() which returns a matcher, only if it is not ambiguous
+///    to decide which matcher to return. Eg. it contains only a single
+///    matcher, or a polymorphic one with only one overload.
+///  - hasTypedMatcher<T>()/getTypedMatcher<T>(): These calls will determine if
+///    the underlying matcher(s) can unambiguously return a Matcher<T>.
+class VariantMatcher {
+  /// \brief Methods that depend on T from hasTypedMatcher/getTypedMatcher.
+  class MatcherOps {
+  public:
+    virtual ~MatcherOps();
+    virtual bool canConstructFrom(const DynTypedMatcher &Matcher) const = 0;
+    virtual void constructFrom(const DynTypedMatcher &Matcher) = 0;
+    virtual void constructVariadicOperator(
+        ast_matchers::internal::VariadicOperatorFunction Func,
+        ArrayRef<VariantMatcher> InnerMatchers) = 0;
+  };
+
+  /// \brief Payload interface to be specialized by each matcher type.
+  ///
+  /// It follows a similar interface as VariantMatcher itself.
+  class Payload : public RefCountedBaseVPTR {
+  public:
+    virtual ~Payload();
+    virtual llvm::Optional<DynTypedMatcher> getSingleMatcher() const = 0;
+    virtual std::string getTypeAsString() const = 0;
+    virtual void makeTypedMatcher(MatcherOps &Ops) const = 0;
+  };
+
+public:
+  /// \brief A null matcher.
+  VariantMatcher();
+
+  /// \brief Clones the provided matcher.
+  static VariantMatcher SingleMatcher(const DynTypedMatcher &Matcher);
+
+  /// \brief Clones the provided matchers.
+  ///
+  /// They should be the result of a polymorphic matcher.
+  static VariantMatcher PolymorphicMatcher(ArrayRef<DynTypedMatcher> Matchers);
+
+  /// \brief Creates a 'variadic' operator matcher.
+  ///
+  /// It will bind to the appropriate type on getTypedMatcher<T>().
+  static VariantMatcher VariadicOperatorMatcher(
+      ast_matchers::internal::VariadicOperatorFunction Func,
+      ArrayRef<VariantMatcher> Args);
+
+  /// \brief Makes the matcher the "null" matcher.
+  void reset();
+
+  /// \brief Whether the matcher is null.
+  bool isNull() const { return !Value; }
+
+  /// \brief Return a single matcher, if there is no ambiguity.
+  ///
+  /// \returns the matcher, if there is only one matcher. An empty Optional, if
+  /// the underlying matcher is a polymorphic matcher with more than one
+  /// representation.
+  llvm::Optional<DynTypedMatcher> getSingleMatcher() const;
+
+  /// \brief Determines if the contained matcher can be converted to
+  ///   \c Matcher<T>.
+  ///
+  /// For the Single case, it returns true if it can be converted to
+  /// \c Matcher<T>.
+  /// For the Polymorphic case, it returns true if one, and only one, of the
+  /// overloads can be converted to \c Matcher<T>. If there are more than one
+  /// that can, the result would be ambiguous and false is returned.
+  template <class T>
+  bool hasTypedMatcher() const {
+    TypedMatcherOps<T> Ops;
+    if (Value) Value->makeTypedMatcher(Ops);
+    return Ops.hasMatcher();
+  }
+
+  /// \brief Return this matcher as a \c Matcher<T>.
+  ///
+  /// Handles the different types (Single, Polymorphic) accordingly.
+  /// Asserts that \c hasTypedMatcher<T>() is true.
+  template <class T>
+  ast_matchers::internal::Matcher<T> getTypedMatcher() const {
+    TypedMatcherOps<T> Ops;
+    Value->makeTypedMatcher(Ops);
+    assert(Ops.hasMatcher() && "hasTypedMatcher<T>() == false");
+    return Ops.matcher();
+  }
+
+  /// \brief String representation of the type of the value.
+  ///
+  /// If the underlying matcher is a polymorphic one, the string will show all
+  /// the types.
+  std::string getTypeAsString() const;
+
+private:
+  explicit VariantMatcher(Payload *Value) : Value(Value) {}
+
+  class SinglePayload;
+  class PolymorphicPayload;
+  class VariadicOpPayload;
+
+  template <typename T>
+  class TypedMatcherOps : public MatcherOps {
+  public:
+    typedef ast_matchers::internal::Matcher<T> MatcherT;
+
+    virtual bool canConstructFrom(const DynTypedMatcher &Matcher) const {
+      return Matcher.canConvertTo<T>();
+    }
+
+    virtual void constructFrom(const DynTypedMatcher& Matcher) {
+      Out.reset(new MatcherT(Matcher.convertTo<T>()));
+    }
+
+    virtual void constructVariadicOperator(
+        ast_matchers::internal::VariadicOperatorFunction Func,
+        ArrayRef<VariantMatcher> InnerMatchers) {
+      const size_t NumArgs = InnerMatchers.size();
+      MatcherT **InnerArgs = new MatcherT *[NumArgs]();
+      bool HasError = false;
+      for (size_t i = 0; i != NumArgs; ++i) {
+        // Abort if any of the inner matchers can't be converted to
+        // Matcher<T>.
+        if (!InnerMatchers[i].hasTypedMatcher<T>()) {
+          HasError = true;
+          break;
+        }
+        InnerArgs[i] = new MatcherT(InnerMatchers[i].getTypedMatcher<T>());
+      }
+      if (!HasError) {
+        Out.reset(new MatcherT(
+            new ast_matchers::internal::VariadicOperatorMatcherInterface<T>(
+                Func, ArrayRef<const MatcherT *>(InnerArgs, NumArgs))));
+      }
+      for (size_t i = 0; i != NumArgs; ++i) {
+        delete InnerArgs[i];
+      }
+      delete[] InnerArgs;
+    }
+
+    bool hasMatcher() const { return Out.get() != NULL; }
+    const MatcherT &matcher() const { return *Out; }
+
+  private:
+    OwningPtr<MatcherT> Out;
+  };
+
+  IntrusiveRefCntPtr<const Payload> Value;
+};
+
+/// \brief Variant value class.
+///
+/// Basically, a tagged union with value type semantics.
+/// It is used by the registry as the return value and argument type for the
+/// matcher factory methods.
+/// It can be constructed from any of the supported types. It supports
+/// copy/assignment.
+///
+/// Supported types:
+///  - \c unsigned
+///  - \c std::string
+///  - \c VariantMatcher (\c DynTypedMatcher / \c Matcher<T>)
+class VariantValue {
+public:
+  VariantValue() : Type(VT_Nothing) {}
+
+  VariantValue(const VariantValue &Other);
+  ~VariantValue();
+  VariantValue &operator=(const VariantValue &Other);
+
+  /// \brief Specific constructors for each supported type.
+  VariantValue(unsigned Unsigned);
+  VariantValue(const std::string &String);
+  VariantValue(const VariantMatcher &Matchers);
+
+  /// \brief Unsigned value functions.
+  bool isUnsigned() const;
+  unsigned getUnsigned() const;
+  void setUnsigned(unsigned Unsigned);
+
+  /// \brief String value functions.
+  bool isString() const;
+  const std::string &getString() const;
+  void setString(const std::string &String);
+
+  /// \brief Matcher value functions.
+  bool isMatcher() const;
+  const VariantMatcher &getMatcher() const;
+  void setMatcher(const VariantMatcher &Matcher);
+
+  /// \brief String representation of the type of the value.
+  std::string getTypeAsString() const;
+
+private:
+  void reset();
+
+  /// \brief All supported value types.
+  enum ValueType {
+    VT_Nothing,
+    VT_Unsigned,
+    VT_String,
+    VT_Matcher
+  };
+
+  /// \brief All supported value types.
+  union AllValues {
+    unsigned Unsigned;
+    std::string *String;
+    VariantMatcher *Matcher;
+  };
+
+  ValueType Type;
+  AllValues Value;
+};
+
+} // end namespace dynamic
+} // end namespace ast_matchers
+} // end namespace clang
+
+#endif  // LLVM_CLANG_AST_MATCHERS_DYNAMIC_VARIANT_VALUE_H
diff --git a/include/clang/Analysis/Analyses/Consumed.h b/include/clang/Analysis/Analyses/Consumed.h
new file mode 100644
index 000000000000..23a094a79643
--- /dev/null
+++ b/include/clang/Analysis/Analyses/Consumed.h
@@ -0,0 +1,264 @@
+//===- Consumed.h ----------------------------------------------*- C++ --*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// A intra-procedural analysis for checking consumed properties.  This is based,
+// in part, on research on linear types.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_CONSUMED_H
+#define LLVM_CLANG_CONSUMED_H
+
+#include "clang/AST/DeclCXX.h"
+#include "clang/AST/ExprCXX.h"
+#include "clang/AST/StmtCXX.h"
+#include "clang/Analysis/AnalysisContext.h"
+#include "clang/Analysis/Analyses/PostOrderCFGView.h"
+#include "clang/Basic/SourceLocation.h"
+
+namespace clang {
+namespace consumed {
+  
+  enum ConsumedState {
+    // No state information for the given variable.
+    CS_None,
+    
+    CS_Unknown,
+    CS_Unconsumed,
+    CS_Consumed
+  };
+  
+  class ConsumedStmtVisitor;
+  
+  typedef SmallVector<PartialDiagnosticAt, 1> OptionalNotes;
+  typedef std::pair<PartialDiagnosticAt, OptionalNotes> DelayedDiag;
+  typedef std::list<DelayedDiag> DiagList;
+
+  class ConsumedWarningsHandlerBase {
+
+  public:
+
+    virtual ~ConsumedWarningsHandlerBase();
+
+    /// \brief Emit the warnings and notes left by the analysis.
+    virtual void emitDiagnostics() {}
+    
+    /// \brief Warn that a variable's state doesn't match at the entry and exit
+    /// of a loop.
+    ///
+    /// \param Loc -- The location of the end of the loop.
+    ///
+    /// \param VariableName -- The name of the variable that has a mismatched
+    /// state.
+    virtual void warnLoopStateMismatch(SourceLocation Loc,
+                                       StringRef VariableName) {}
+    
+    /// \brief Warn about parameter typestate mismatches upon return.
+    ///
+    /// \param Loc -- The SourceLocation of the return statement.
+    ///
+    /// \param ExpectedState -- The state the return value was expected to be
+    /// in.
+    ///
+    /// \param ObservedState -- The state the return value was observed to be
+    /// in.
+    virtual void warnParamReturnTypestateMismatch(SourceLocation Loc,
+                                                  StringRef VariableName,
+                                                  StringRef ExpectedState,
+                                                  StringRef ObservedState) {};
+    
+    // FIXME: Add documentation.
+    virtual void warnParamTypestateMismatch(SourceLocation LOC,
+                                            StringRef ExpectedState,
+                                            StringRef ObservedState) {}
+    
+    // FIXME: This can be removed when the attr propagation fix for templated
+    //        classes lands.
+    /// \brief Warn about return typestates set for unconsumable types.
+    /// 
+    /// \param Loc -- The location of the attributes.
+    ///
+    /// \param TypeName -- The name of the unconsumable type.
+    virtual void warnReturnTypestateForUnconsumableType(SourceLocation Loc,
+                                                        StringRef TypeName) {}
+    
+    /// \brief Warn about return typestate mismatches.
+    ///
+    /// \param Loc -- The SourceLocation of the return statement.
+    ///
+    /// \param ExpectedState -- The state the return value was expected to be
+    /// in.
+    ///
+    /// \param ObservedState -- The state the return value was observed to be
+    /// in.
+    virtual void warnReturnTypestateMismatch(SourceLocation Loc,
+                                             StringRef ExpectedState,
+                                             StringRef ObservedState) {}
+
+    /// \brief Warn about use-while-consumed errors.
+    /// \param MethodName -- The name of the method that was incorrectly
+    /// invoked.
+    ///
+    /// \param State -- The state the object was used in.
+    ///
+    /// \param Loc -- The SourceLocation of the method invocation.
+    virtual void warnUseOfTempInInvalidState(StringRef MethodName,
+                                             StringRef State,
+                                             SourceLocation Loc) {}
+
+    /// \brief Warn about use-while-consumed errors.
+    /// \param MethodName -- The name of the method that was incorrectly
+    /// invoked.
+    ///
+    /// \param State -- The state the object was used in.
+    ///
+    /// \param VariableName -- The name of the variable that holds the unique
+    /// value.
+    ///
+    /// \param Loc -- The SourceLocation of the method invocation.
+    virtual void warnUseInInvalidState(StringRef MethodName,
+                                       StringRef VariableName,
+                                       StringRef State,
+                                       SourceLocation Loc) {}
+  };
+
+  class ConsumedStateMap {
+    
+    typedef llvm::DenseMap<const VarDecl *, ConsumedState> VarMapType;
+    typedef llvm::DenseMap<const CXXBindTemporaryExpr *, ConsumedState>
+            TmpMapType;
+    
+  protected:
+    
+    bool Reachable;
+    const Stmt *From;
+    VarMapType VarMap;
+    TmpMapType TmpMap;
+    
+  public:
+    ConsumedStateMap() : Reachable(true), From(NULL) {}
+    ConsumedStateMap(const ConsumedStateMap &Other)
+      : Reachable(Other.Reachable), From(Other.From), VarMap(Other.VarMap),
+        TmpMap() {}
+    
+    /// \brief Warn if any of the parameters being tracked are not in the state
+    /// they were declared to be in upon return from a function.
+    void checkParamsForReturnTypestate(SourceLocation BlameLoc,
+      ConsumedWarningsHandlerBase &WarningsHandler) const;
+    
+    /// \brief Clear the TmpMap.
+    void clearTemporaries();
+    
+    /// \brief Get the consumed state of a given variable.
+    ConsumedState getState(const VarDecl *Var) const;
+    
+    /// \brief Get the consumed state of a given temporary value.
+    ConsumedState getState(const CXXBindTemporaryExpr *Tmp) const;
+    
+    /// \brief Merge this state map with another map.
+    void intersect(const ConsumedStateMap *Other);
+    
+    void intersectAtLoopHead(const CFGBlock *LoopHead, const CFGBlock *LoopBack,
+      const ConsumedStateMap *LoopBackStates,
+      ConsumedWarningsHandlerBase &WarningsHandler);
+    
+    /// \brief Return true if this block is reachable.
+    bool isReachable() const { return Reachable; }
+    
+    /// \brief Mark the block as unreachable.
+    void markUnreachable();
+    
+    /// \brief Set the source for a decision about the branching of states.
+    /// \param Source -- The statement that was the origin of a branching
+    /// decision.
+    void setSource(const Stmt *Source) { this->From = Source; }
+    
+    /// \brief Set the consumed state of a given variable.
+    void setState(const VarDecl *Var, ConsumedState State);
+    
+    /// \brief Set the consumed state of a given temporary value.
+    void setState(const CXXBindTemporaryExpr *Tmp, ConsumedState State);
+    
+    /// \brief Remove the variable from our state map.
+    void remove(const VarDecl *Var);
+    
+    /// \brief Tests to see if there is a mismatch in the states stored in two
+    /// maps.
+    ///
+    /// \param Other -- The second map to compare against.
+    bool operator!=(const ConsumedStateMap *Other) const;
+  };
+  
+  class ConsumedBlockInfo {
+    std::vector<ConsumedStateMap*> StateMapsArray;
+    std::vector<unsigned int> VisitOrder;
+    
+  public:
+    ConsumedBlockInfo() { }
+    
+    ConsumedBlockInfo(unsigned int NumBlocks, PostOrderCFGView *SortedGraph)
+        : StateMapsArray(NumBlocks, 0), VisitOrder(NumBlocks, 0) {
+      unsigned int VisitOrderCounter = 0;
+      for (PostOrderCFGView::iterator BI = SortedGraph->begin(),
+           BE = SortedGraph->end(); BI != BE; ++BI) {
+        VisitOrder[(*BI)->getBlockID()] = VisitOrderCounter++;
+      }
+    }
+    
+    bool allBackEdgesVisited(const CFGBlock *CurrBlock,
+                             const CFGBlock *TargetBlock);
+    
+    void addInfo(const CFGBlock *Block, ConsumedStateMap *StateMap,
+                 bool &AlreadyOwned);
+    void addInfo(const CFGBlock *Block, ConsumedStateMap *StateMap);
+    
+    ConsumedStateMap* borrowInfo(const CFGBlock *Block);
+    
+    void discardInfo(const CFGBlock *Block);
+    
+    ConsumedStateMap* getInfo(const CFGBlock *Block);
+    
+    bool isBackEdge(const CFGBlock *From, const CFGBlock *To);
+    bool isBackEdgeTarget(const CFGBlock *Block);
+  };
+
+  /// A class that handles the analysis of uniqueness violations.
+  class ConsumedAnalyzer {
+    
+    ConsumedBlockInfo BlockInfo;
+    ConsumedStateMap *CurrStates;
+    
+    ConsumedState ExpectedReturnState;
+    
+    void determineExpectedReturnState(AnalysisDeclContext &AC,
+                                      const FunctionDecl *D);
+    bool hasConsumableAttributes(const CXXRecordDecl *RD);
+    bool splitState(const CFGBlock *CurrBlock,
+                    const ConsumedStmtVisitor &Visitor);
+    
+  public:
+    
+    ConsumedWarningsHandlerBase &WarningsHandler;
+
+    ConsumedAnalyzer(ConsumedWarningsHandlerBase &WarningsHandler)
+        : WarningsHandler(WarningsHandler) {}
+
+    ConsumedState getExpectedReturnState() const { return ExpectedReturnState; }
+    
+    /// \brief Check a function's CFG for consumed violations.
+    ///
+    /// We traverse the blocks in the CFG, keeping track of the state of each
+    /// value who's type has uniquness annotations.  If methods are invoked in
+    /// the wrong state a warning is issued.  Each block in the CFG is traversed
+    /// exactly once.
+    void run(AnalysisDeclContext &AC);
+  };
+}} // end namespace clang::consumed
+
+#endif
diff --git a/include/clang/Analysis/Analyses/FormatString.h b/include/clang/Analysis/Analyses/FormatString.h
index 4bd989cf4ef3..c9516b50cae3 100644
--- a/include/clang/Analysis/Analyses/FormatString.h
+++ b/include/clang/Analysis/Analyses/FormatString.h
@@ -49,7 +49,7 @@ public:
   const char *toString() const { return representation; }
 
   // Overloaded operators for bool like qualities
-  operator bool() const { return flag; }
+  LLVM_EXPLICIT operator bool() const { return flag; }
   OptionalFlag& operator=(const bool &rhs) {
     flag = rhs;
     return *this;  // Return a reference to myself.
@@ -73,6 +73,9 @@ public:
     AsIntMax,     // 'j'
     AsSizeT,      // 'z'
     AsPtrDiff,    // 't'
+    AsInt32,      // 'I32' (MSVCRT, like __int32)
+    AsInt3264,    // 'I'   (MSVCRT, like __int3264 from MIDL)
+    AsInt64,      // 'I64' (MSVCRT, like __int64)
     AsLongDouble, // 'L'
     AsAllocate,   // for '%as', GNU extension to C90 scanf
     AsMAllocate,  // for '%ms', GNU extension to scanf
@@ -95,6 +98,9 @@ public:
       case AsLongLong:
       case AsChar:
         return 2;
+      case AsInt32:
+      case AsInt64:
+        return 3;
       case None:
         return 0;
     }
diff --git a/include/clang/Analysis/Analyses/ThreadSafety.h b/include/clang/Analysis/Analyses/ThreadSafety.h
index 8a888e633322..5def3dd3dfd1 100644
--- a/include/clang/Analysis/Analyses/ThreadSafety.h
+++ b/include/clang/Analysis/Analyses/ThreadSafety.h
@@ -11,8 +11,8 @@
 // A intra-procedural analysis for thread safety (e.g. deadlocks and race
 // conditions), based off of an annotation system.
 //
-// See http://clang.llvm.org/docs/LanguageExtensions.html#threadsafety for more
-// information.
+// See http://clang.llvm.org/docs/LanguageExtensions.html#thread-safety-annotation-checking
+// for more information.
 //
 //===----------------------------------------------------------------------===//
 
diff --git a/include/clang/Analysis/Analyses/UninitializedValues.h b/include/clang/Analysis/Analyses/UninitializedValues.h
index e8810c32a140..188722d94b3a 100644
--- a/include/clang/Analysis/Analyses/UninitializedValues.h
+++ b/include/clang/Analysis/Analyses/UninitializedValues.h
@@ -38,6 +38,12 @@ private:
   /// The expression which uses this variable.
   const Expr *User;
 
+  /// Is this use uninitialized whenever the function is called?
+  bool UninitAfterCall;
+
+  /// Is this use uninitialized whenever the variable declaration is reached?
+  bool UninitAfterDecl;
+
   /// Does this use always see an uninitialized value?
   bool AlwaysUninit;
 
@@ -46,13 +52,17 @@ private:
   SmallVector<Branch, 2> UninitBranches;
 
 public:
-  UninitUse(const Expr *User, bool AlwaysUninit) :
-    User(User), AlwaysUninit(AlwaysUninit) {}
+  UninitUse(const Expr *User, bool AlwaysUninit)
+      : User(User), UninitAfterCall(false), UninitAfterDecl(false),
+        AlwaysUninit(AlwaysUninit) {}
 
   void addUninitBranch(Branch B) {
     UninitBranches.push_back(B);
   }
 
+  void setUninitAfterCall() { UninitAfterCall = true; }
+  void setUninitAfterDecl() { UninitAfterDecl = true; }
+
   /// Get the expression containing the uninitialized use.
   const Expr *getUser() const { return User; }
 
@@ -62,6 +72,12 @@ public:
     Maybe,
     /// The use is uninitialized whenever a certain branch is taken.
     Sometimes,
+    /// The use is uninitialized the first time it is reached after we reach
+    /// the variable's declaration.
+    AfterDecl,
+    /// The use is uninitialized the first time it is reached after the function
+    /// is called.
+    AfterCall,
     /// The use is always uninitialized.
     Always
   };
@@ -69,6 +85,8 @@ public:
   /// Get the kind of uninitialized use.
   Kind getKind() const {
     return AlwaysUninit ? Always :
+           UninitAfterCall ? AfterCall :
+           UninitAfterDecl ? AfterDecl :
            !branch_empty() ? Sometimes : Maybe;
   }
 
diff --git a/include/clang/Analysis/AnalysisContext.h b/include/clang/Analysis/AnalysisContext.h
index 46d7d07e0907..b6f183d21b68 100644
--- a/include/clang/Analysis/AnalysisContext.h
+++ b/include/clang/Analysis/AnalysisContext.h
@@ -16,18 +16,14 @@
 #define LLVM_CLANG_ANALYSIS_ANALYSISCONTEXT_H
 
 #include "clang/AST/Decl.h"
-#include "clang/AST/Expr.h"
 #include "clang/Analysis/CFG.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/FoldingSet.h"
-#include "llvm/ADT/IntrusiveRefCntPtr.h"
 #include "llvm/ADT/OwningPtr.h"
-#include "llvm/ADT/PointerUnion.h"
 #include "llvm/Support/Allocator.h"
 
 namespace clang {
 
-class Decl;
 class Stmt;
 class CFGReverseBlockReachabilityAnalysis;
 class CFGStmtMap;
@@ -35,7 +31,6 @@ class LiveVariables;
 class ManagedAnalysis;
 class ParentMap;
 class PseudoConstantAnalysis;
-class ImplicitParamDecl;
 class LocationContextManager;
 class StackFrameContext;
 class BlockInvocationContext;
@@ -256,6 +251,7 @@ public:
 
   virtual void Profile(llvm::FoldingSetNodeID &ID) = 0;
 
+  void dumpStack(raw_ostream &OS, StringRef Indent = "") const;
   LLVM_ATTRIBUTE_USED void dumpStack() const;
 
 public:
diff --git a/include/clang/Analysis/AnalysisDiagnostic.h b/include/clang/Analysis/AnalysisDiagnostic.h
index d4e1f5fb6907..33c940e7bbf0 100644
--- a/include/clang/Analysis/AnalysisDiagnostic.h
+++ b/include/clang/Analysis/AnalysisDiagnostic.h
@@ -16,7 +16,7 @@ namespace clang {
   namespace diag {
     enum {
 #define DIAG(ENUM,FLAGS,DEFAULT_MAPPING,DESC,GROUP,\
-             SFINAE,ACCESS,NOWERROR,SHOWINSYSHEADER,CATEGORY) ENUM,
+             SFINAE,NOWERROR,SHOWINSYSHEADER,CATEGORY) ENUM,
 #define ANALYSISSTART
 #include "clang/Basic/DiagnosticAnalysisKinds.inc"
 #undef DIAG
diff --git a/include/clang/Analysis/CFG.h b/include/clang/Analysis/CFG.h
index ee0be736dd5e..14b7ab842675 100644
--- a/include/clang/Analysis/CFG.h
+++ b/include/clang/Analysis/CFG.h
@@ -43,6 +43,8 @@ namespace clang {
   class PrinterHelper;
   class LangOptions;
   class ASTContext;
+  class CXXRecordDecl;
+  class CXXDeleteExpr;
 
 /// CFGElement - Represents a top-level expression in a basic block.
 class CFGElement {
@@ -53,6 +55,7 @@ public:
     Initializer,
     // dtor kind
     AutomaticObjectDtor,
+    DeleteDtor,
     BaseDtor,
     MemberDtor,
     TemporaryDtor,
@@ -185,6 +188,31 @@ private:
   }
 };
 
+/// CFGDeleteDtor - Represents C++ object destructor generated
+/// from a call to delete.
+class CFGDeleteDtor : public CFGImplicitDtor {
+public:
+  CFGDeleteDtor(const CXXRecordDecl *RD, const CXXDeleteExpr *DE)
+      : CFGImplicitDtor(DeleteDtor, RD, DE) {}
+
+  const CXXRecordDecl *getCXXRecordDecl() const {
+    return static_cast<CXXRecordDecl*>(Data1.getPointer());
+  }
+
+  // Get Delete expression which triggered the destructor call.
+  const CXXDeleteExpr *getDeleteExpr() const {
+    return static_cast<CXXDeleteExpr *>(Data2.getPointer());
+  }
+
+
+private:
+  friend class CFGElement;
+  CFGDeleteDtor() {}
+  static bool isKind(const CFGElement &elem) {
+    return elem.getKind() == DeleteDtor;
+  }
+};
+
 /// CFGBaseDtor - Represents C++ object destructor implicitly generated for
 /// base object in destructor.
 class CFGBaseDtor : public CFGImplicitDtor {
@@ -269,7 +297,7 @@ public:
   Stmt &operator*() { return *getStmt(); }
   const Stmt &operator*() const { return *getStmt(); }
 
-  operator bool() const { return getStmt(); }
+  LLVM_EXPLICIT operator bool() const { return getStmt(); }
 };
 
 /// CFGBlock - Represents a single basic block in a source-level CFG.
@@ -564,6 +592,10 @@ public:
     Elements.push_back(CFGAutomaticObjDtor(VD, S), C);
   }
 
+  void appendDeleteDtor(CXXRecordDecl *RD, CXXDeleteExpr *DE, BumpVectorContext &C) {
+    Elements.push_back(CFGDeleteDtor(RD, DE), C);
+  }
+
   // Destructors must be inserted in reversed order. So insertion is in two
   // steps. First we prepare space for some number of elements, then we insert
   // the elements beginning at the last position in prepared space.
@@ -745,6 +777,35 @@ public:
     TryDispatchBlocks.push_back(block);
   }
 
+  /// Records a synthetic DeclStmt and the DeclStmt it was constructed from.
+  ///
+  /// The CFG uses synthetic DeclStmts when a single AST DeclStmt contains
+  /// multiple decls.
+  void addSyntheticDeclStmt(const DeclStmt *Synthetic,
+                            const DeclStmt *Source) {
+    assert(Synthetic->isSingleDecl() && "Can handle single declarations only");
+    assert(Synthetic != Source && "Don't include original DeclStmts in map");
+    assert(!SyntheticDeclStmts.count(Synthetic) && "Already in map");
+    SyntheticDeclStmts[Synthetic] = Source;
+  }
+
+  typedef llvm::DenseMap<const DeclStmt *, const DeclStmt *>::const_iterator
+    synthetic_stmt_iterator;
+
+  /// Iterates over synthetic DeclStmts in the CFG.
+  ///
+  /// Each element is a (synthetic statement, source statement) pair.
+  ///
+  /// \sa addSyntheticDeclStmt
+  synthetic_stmt_iterator synthetic_stmt_begin() const {
+    return SyntheticDeclStmts.begin();
+  }
+
+  /// \sa synthetic_stmt_begin
+  synthetic_stmt_iterator synthetic_stmt_end() const {
+    return SyntheticDeclStmts.end();
+  }
+
   //===--------------------------------------------------------------------===//
   // Member templates useful for various batch operations over CFGs.
   //===--------------------------------------------------------------------===//
@@ -763,21 +824,6 @@ public:
   // CFG Introspection.
   //===--------------------------------------------------------------------===//
 
-  struct   BlkExprNumTy {
-    const signed Idx;
-    explicit BlkExprNumTy(signed idx) : Idx(idx) {}
-    explicit BlkExprNumTy() : Idx(-1) {}
-    operator bool() const { return Idx >= 0; }
-    operator unsigned() const { assert(Idx >=0); return (unsigned) Idx; }
-  };
-
-  bool isBlkExpr(const Stmt *S) { return getBlkExprNum(S); }
-  bool isBlkExpr(const Stmt *S) const {
-    return const_cast<CFG*>(this)->isBlkExpr(S);
-  }
-  BlkExprNumTy  getBlkExprNum(const Stmt *S);
-  unsigned      getNumBlkExprs();
-
   /// getNumBlockIDs - Returns the total number of BlockIDs allocated (which
   /// start at 0).
   unsigned getNumBlockIDs() const { return NumBlockIDs; }
@@ -800,9 +846,7 @@ public:
   //===--------------------------------------------------------------------===//
 
   CFG() : Entry(NULL), Exit(NULL), IndirectGotoBlock(NULL), NumBlockIDs(0),
-          BlkExprMap(NULL), Blocks(BlkBVC, 10) {}
-
-  ~CFG();
+          Blocks(BlkBVC, 10) {}
 
   llvm::BumpPtrAllocator& getAllocator() {
     return BlkBVC.getAllocator();
@@ -819,11 +863,6 @@ private:
                                 // for indirect gotos
   unsigned  NumBlockIDs;
 
-  // BlkExprMap - An opaque pointer to prevent inclusion of DenseMap.h.
-  //  It represents a map from Expr* to integers to record the set of
-  //  block-level expressions and their "statement number" in the CFG.
-  void *    BlkExprMap;
-
   BumpVectorContext BlkBVC;
 
   CFGBlockListTy Blocks;
@@ -832,6 +871,9 @@ private:
   /// This is the collection of such blocks present in the CFG.
   std::vector<const CFGBlock *> TryDispatchBlocks;
 
+  /// Collects DeclStmts synthesized for this CFG and maps each one back to its
+  /// source DeclStmt.
+  llvm::DenseMap<const DeclStmt *, const DeclStmt *> SyntheticDeclStmts;
 };
 } // end namespace clang
 
diff --git a/include/clang/Analysis/CallGraph.h b/include/clang/Analysis/CallGraph.h
index 5015eb61497e..593ba575c78e 100644
--- a/include/clang/Analysis/CallGraph.h
+++ b/include/clang/Analysis/CallGraph.h
@@ -144,8 +144,8 @@ private:
 public:
   CallGraphNode(Decl *D) : FD(D) {}
 
-  typedef SmallVector<CallRecord, 5>::iterator iterator;
-  typedef SmallVector<CallRecord, 5>::const_iterator const_iterator;
+  typedef SmallVectorImpl<CallRecord>::iterator iterator;
+  typedef SmallVectorImpl<CallRecord>::const_iterator const_iterator;
 
   /// Iterators through all the callees/children of the node.
   inline iterator begin() { return CalledFunctions.begin(); }
diff --git a/include/clang/Analysis/FlowSensitive/DataflowSolver.h b/include/clang/Analysis/FlowSensitive/DataflowSolver.h
index 0f5e7bf246e8..c611ea2397ec 100644
--- a/include/clang/Analysis/FlowSensitive/DataflowSolver.h
+++ b/include/clang/Analysis/FlowSensitive/DataflowSolver.h
@@ -45,8 +45,7 @@ public:
   /// dequeue - Remove a block from the worklist.
   const CFGBlock *dequeue() {
     assert(!BlockQueue.empty());
-    const CFGBlock *B = BlockQueue.back();
-    BlockQueue.pop_back();
+    const CFGBlock *B = BlockQueue.pop_back_val();
     BlockSet[B] = 0;
     return B;
   }
diff --git a/include/clang/Analysis/Support/BlkExprDeclBitVector.h b/include/clang/Analysis/Support/BlkExprDeclBitVector.h
deleted file mode 100644
index 35cc799b13bc..000000000000
--- a/include/clang/Analysis/Support/BlkExprDeclBitVector.h
+++ /dev/null
@@ -1,307 +0,0 @@
-// BlkExprDeclBitVector.h - Dataflow types for Bitvector Analysis --*- C++ --*--
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file provides definition of dataflow types used by analyses such
-// as LiveVariables and UninitializedValues.  The underlying dataflow values
-// are implemented as bitvectors, but the definitions in this file include
-// the necessary boilerplate to use with our dataflow framework.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_STMTDECLBVDVAL_H
-#define LLVM_CLANG_STMTDECLBVDVAL_H
-
-#include "clang/AST/Decl.h" // for Decl* -> NamedDecl* conversion
-#include "clang/Analysis/CFG.h"
-#include "llvm/ADT/BitVector.h"
-#include "llvm/ADT/DenseMap.h"
-
-namespace clang {
-
-  class Stmt;
-  class ASTContext;
-
-struct DeclBitVector_Types {
-
-  class Idx {
-    unsigned I;
-  public:
-    explicit Idx(unsigned i) : I(i) {}
-    Idx() : I(~0U) {}
-
-    bool isValid() const {
-      return I != ~0U;
-    }
-    operator unsigned() const {
-      assert (isValid());
-      return I;
-    }
-  };
-
-  //===--------------------------------------------------------------------===//
-  // AnalysisDataTy - Whole-function meta data.
-  //===--------------------------------------------------------------------===//
-
-  class AnalysisDataTy {
-  public:
-    typedef llvm::DenseMap<const NamedDecl*, unsigned > DMapTy;
-    typedef DMapTy::const_iterator decl_iterator;
-
-  protected:
-    DMapTy DMap;
-    unsigned NDecls;
-
-  public:
-
-    AnalysisDataTy() : NDecls(0) {}
-    virtual ~AnalysisDataTy() {}
-
-    bool isTracked(const NamedDecl *SD) { return DMap.find(SD) != DMap.end(); }
-
-    Idx getIdx(const NamedDecl *SD) const {
-      DMapTy::const_iterator I = DMap.find(SD);
-      return I == DMap.end() ? Idx() : Idx(I->second);
-    }
-
-    unsigned getNumDecls() const { return NDecls; }
-
-    void Register(const NamedDecl *SD) {
-      if (!isTracked(SD)) DMap[SD] = NDecls++;
-    }
-
-    decl_iterator begin_decl() const { return DMap.begin(); }
-    decl_iterator end_decl() const { return DMap.end(); }
-  };
-
-  //===--------------------------------------------------------------------===//
-  // ValTy - Dataflow value.
-  //===--------------------------------------------------------------------===//
-
-  class ValTy {
-    llvm::BitVector DeclBV;
-  public:
-
-    void resetDeclValues(AnalysisDataTy& AD) {
-      DeclBV.resize(AD.getNumDecls());
-      DeclBV.reset();
-    }
-
-    void setDeclValues(AnalysisDataTy& AD) {
-      DeclBV.resize(AD.getNumDecls());
-      DeclBV.set();
-    }
-
-    void resetValues(AnalysisDataTy& AD) {
-      resetDeclValues(AD);
-    }
-
-    bool operator==(const ValTy& RHS) const {
-      assert (sizesEqual(RHS));
-      return DeclBV == RHS.DeclBV;
-    }
-
-    void copyValues(const ValTy& RHS) { DeclBV = RHS.DeclBV; }
-
-    llvm::BitVector::reference getBit(unsigned i) {
-      return DeclBV[i];
-    }
-
-    bool getBit(unsigned i) const {
-      return DeclBV[i];
-    }
-
-    llvm::BitVector::reference
-    operator()(const NamedDecl *ND, const AnalysisDataTy& AD) {
-      return getBit(AD.getIdx(ND));
-    }
-
-    bool operator()(const NamedDecl *ND, const AnalysisDataTy& AD) const {
-      return getBit(AD.getIdx(ND));
-    }
-
-    llvm::BitVector::reference getDeclBit(unsigned i) { return DeclBV[i]; }
-    const llvm::BitVector::reference getDeclBit(unsigned i) const {
-      return const_cast<llvm::BitVector&>(DeclBV)[i];
-    }
-
-    ValTy& operator|=(const ValTy& RHS) {
-      assert (sizesEqual(RHS));
-      DeclBV |= RHS.DeclBV;
-      return *this;
-    }
-
-    ValTy& operator&=(const ValTy& RHS) {
-      assert (sizesEqual(RHS));
-      DeclBV &= RHS.DeclBV;
-      return *this;
-    }
-
-    ValTy& OrDeclBits(const ValTy& RHS) {
-      return operator|=(RHS);
-    }
-
-    ValTy& AndDeclBits(const ValTy& RHS) {
-      return operator&=(RHS);
-    }
-
-    bool sizesEqual(const ValTy& RHS) const {
-      return DeclBV.size() == RHS.DeclBV.size();
-    }
-  };
-
-  //===--------------------------------------------------------------------===//
-  // Some useful merge operations.
-  //===--------------------------------------------------------------------===//
-
-  struct Union { void operator()(ValTy& Dst, ValTy& Src) { Dst |= Src; } };
-  struct Intersect { void operator()(ValTy& Dst, ValTy& Src) { Dst &= Src; } };
-};
-
-
-struct StmtDeclBitVector_Types {
-
-  //===--------------------------------------------------------------------===//
-  // AnalysisDataTy - Whole-function meta data.
-  //===--------------------------------------------------------------------===//
-
-  class AnalysisDataTy : public DeclBitVector_Types::AnalysisDataTy {
-    ASTContext *ctx;
-    CFG* cfg;
-  public:
-    AnalysisDataTy() : ctx(0), cfg(0) {}
-    virtual ~AnalysisDataTy() {}
-
-    void setContext(ASTContext &c) { ctx = &c; }
-    ASTContext &getContext() {
-      assert(ctx && "ASTContext should not be NULL.");
-      return *ctx;
-    }
-
-    void setCFG(CFG& c) { cfg = &c; }
-    CFG& getCFG() { assert(cfg && "CFG should not be NULL."); return *cfg; }
-
-    bool isTracked(const Stmt *S) { return cfg->isBlkExpr(S); }
-    using DeclBitVector_Types::AnalysisDataTy::isTracked;
-
-    unsigned getIdx(const Stmt *S) const {
-      CFG::BlkExprNumTy I = cfg->getBlkExprNum(S);
-      assert(I && "Stmtession not tracked for bitvector.");
-      return I;
-    }
-    using DeclBitVector_Types::AnalysisDataTy::getIdx;
-
-    unsigned getNumBlkExprs() const { return cfg->getNumBlkExprs(); }
-  };
-
-  //===--------------------------------------------------------------------===//
-  // ValTy - Dataflow value.
-  //===--------------------------------------------------------------------===//
-
-  class ValTy : public DeclBitVector_Types::ValTy {
-    llvm::BitVector BlkExprBV;
-    typedef DeclBitVector_Types::ValTy ParentTy;
-
-    static inline ParentTy& ParentRef(ValTy& X) {
-      return static_cast<ParentTy&>(X);
-    }
-
-    static inline const ParentTy& ParentRef(const ValTy& X) {
-      return static_cast<const ParentTy&>(X);
-    }
-
-  public:
-
-    void resetBlkExprValues(AnalysisDataTy& AD) {
-      BlkExprBV.resize(AD.getNumBlkExprs());
-      BlkExprBV.reset();
-    }
-
-    void setBlkExprValues(AnalysisDataTy& AD) {
-      BlkExprBV.resize(AD.getNumBlkExprs());
-      BlkExprBV.set();
-    }
-
-    void resetValues(AnalysisDataTy& AD) {
-      resetDeclValues(AD);
-      resetBlkExprValues(AD);
-    }
-
-    void setValues(AnalysisDataTy& AD) {
-      setDeclValues(AD);
-      setBlkExprValues(AD);
-    }
-
-    bool operator==(const ValTy& RHS) const {
-      return ParentRef(*this) == ParentRef(RHS)
-          && BlkExprBV == RHS.BlkExprBV;
-    }
-
-    void copyValues(const ValTy& RHS) {
-      ParentRef(*this).copyValues(ParentRef(RHS));
-      BlkExprBV = RHS.BlkExprBV;
-    }
-
-    llvm::BitVector::reference
-    operator()(const Stmt *S, const AnalysisDataTy& AD) {
-      return BlkExprBV[AD.getIdx(S)];
-    }
-    const llvm::BitVector::reference
-    operator()(const Stmt *S, const AnalysisDataTy& AD) const {
-      return const_cast<ValTy&>(*this)(S,AD);
-    }
-
-    using DeclBitVector_Types::ValTy::operator();
-
-
-    llvm::BitVector::reference getStmtBit(unsigned i) { return BlkExprBV[i]; }
-    const llvm::BitVector::reference getStmtBit(unsigned i) const {
-      return const_cast<llvm::BitVector&>(BlkExprBV)[i];
-    }
-
-    ValTy& OrBlkExprBits(const ValTy& RHS) {
-      BlkExprBV |= RHS.BlkExprBV;
-      return *this;
-    }
-
-    ValTy& AndBlkExprBits(const ValTy& RHS) {
-      BlkExprBV &= RHS.BlkExprBV;
-      return *this;
-    }
-
-    ValTy& operator|=(const ValTy& RHS) {
-      assert (sizesEqual(RHS));
-      ParentRef(*this) |= ParentRef(RHS);
-      BlkExprBV |= RHS.BlkExprBV;
-      return *this;
-    }
-
-    ValTy& operator&=(const ValTy& RHS) {
-      assert (sizesEqual(RHS));
-      ParentRef(*this) &= ParentRef(RHS);
-      BlkExprBV &= RHS.BlkExprBV;
-      return *this;
-    }
-
-    bool sizesEqual(const ValTy& RHS) const {
-      return ParentRef(*this).sizesEqual(ParentRef(RHS))
-          && BlkExprBV.size() == RHS.BlkExprBV.size();
-    }
-  };
-
-  //===--------------------------------------------------------------------===//
-  // Some useful merge operations.
-  //===--------------------------------------------------------------------===//
-
-  struct Union { void operator()(ValTy& Dst, ValTy& Src) { Dst |= Src; } };
-  struct Intersect { void operator()(ValTy& Dst, ValTy& Src) { Dst &= Src; } };
-
-};
-} // end namespace clang
-
-#endif
diff --git a/include/clang/Analysis/Visitors/CFGRecStmtDeclVisitor.h b/include/clang/Analysis/Visitors/CFGRecStmtDeclVisitor.h
deleted file mode 100644
index 2bf3eda070b9..000000000000
--- a/include/clang/Analysis/Visitors/CFGRecStmtDeclVisitor.h
+++ /dev/null
@@ -1,107 +0,0 @@
-//= CFGRecStmtDeclVisitor - Recursive visitor of CFG stmts/decls -*- C++ --*-=//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements the template class CFGRecStmtDeclVisitor, which extends
-// CFGRecStmtVisitor by implementing (typed) visitation of decls.
-//
-// FIXME: This may not be fully complete.  We currently explore only subtypes
-//        of ScopedDecl.
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_ANALYSIS_CFG_REC_STMT_DECL_VISITOR_H
-#define LLVM_CLANG_ANALYSIS_CFG_REC_STMT_DECL_VISITOR_H
-
-#include "clang/AST/Decl.h"
-#include "clang/AST/DeclCXX.h"
-#include "clang/AST/DeclObjC.h"
-#include "clang/Analysis/Visitors/CFGRecStmtVisitor.h"
-
-#define DISPATCH_CASE(CLASS)                                  \
-case Decl::CLASS:                                             \
-static_cast<ImplClass*>(this)->Visit##CLASS##Decl(            \
-                               static_cast<CLASS##Decl*>(D)); \
-break;
-
-#define DEFAULT_DISPATCH(CLASS) void Visit##CLASS##Decl(CLASS##Decl *D) {}
-#define DEFAULT_DISPATCH_VARDECL(CLASS) void Visit##CLASS##Decl(CLASS##Decl *D)\
-  { static_cast<ImplClass*>(this)->VisitVarDecl(D); }
-
-
-namespace clang {
-template <typename ImplClass>
-class CFGRecStmtDeclVisitor : public CFGRecStmtVisitor<ImplClass> {
-public:
-
-  void VisitDeclRefExpr(DeclRefExpr *DR) {
-    static_cast<ImplClass*>(this)->VisitDecl(DR->getDecl());
-  }
-
-  void VisitDeclStmt(DeclStmt *DS) {
-    for (DeclStmt::decl_iterator DI = DS->decl_begin(), DE = DS->decl_end();
-        DI != DE; ++DI) {
-      Decl *D = *DI;
-      static_cast<ImplClass*>(this)->VisitDecl(D);
-      // Visit the initializer.
-      if (VarDecl *VD = dyn_cast<VarDecl>(D))
-        if (Expr *I = VD->getInit())
-          static_cast<ImplClass*>(this)->Visit(I);
-    }
-  }
-
-  void VisitDecl(Decl *D) {
-    switch (D->getKind()) {
-        DISPATCH_CASE(Function)
-        DISPATCH_CASE(CXXMethod)
-        DISPATCH_CASE(Var)
-        DISPATCH_CASE(ParmVar)       // FIXME: (same)
-        DISPATCH_CASE(ImplicitParam)
-        DISPATCH_CASE(EnumConstant)
-        DISPATCH_CASE(Typedef)
-        DISPATCH_CASE(TypeAlias)
-        DISPATCH_CASE(Record)    // FIXME: Refine.  VisitStructDecl?
-        DISPATCH_CASE(CXXRecord)
-        DISPATCH_CASE(Enum)
-        DISPATCH_CASE(Field)
-        DISPATCH_CASE(UsingDirective)
-        DISPATCH_CASE(Using)
-        DISPATCH_CASE(NamespaceAlias)
-      default:
-        llvm_unreachable("Subtype of ScopedDecl not handled.");
-    }
-  }
-
-  DEFAULT_DISPATCH(Var)
-  DEFAULT_DISPATCH(Function)
-  DEFAULT_DISPATCH(CXXMethod)
-  DEFAULT_DISPATCH_VARDECL(ParmVar)
-  DEFAULT_DISPATCH(ImplicitParam)
-  DEFAULT_DISPATCH(EnumConstant)
-  DEFAULT_DISPATCH(Typedef)
-  DEFAULT_DISPATCH(TypeAlias)
-  DEFAULT_DISPATCH(Record)
-  DEFAULT_DISPATCH(Enum)
-  DEFAULT_DISPATCH(Field)
-  DEFAULT_DISPATCH(ObjCInterface)
-  DEFAULT_DISPATCH(ObjCMethod)
-  DEFAULT_DISPATCH(ObjCProtocol)
-  DEFAULT_DISPATCH(ObjCCategory)
-  DEFAULT_DISPATCH(UsingDirective)
-  DEFAULT_DISPATCH(Using)
-  DEFAULT_DISPATCH(NamespaceAlias)
-
-  void VisitCXXRecordDecl(CXXRecordDecl *D) {
-    static_cast<ImplClass*>(this)->VisitRecordDecl(D);
-  }
-};
-
-} // end namespace clang
-
-#undef DISPATCH_CASE
-#undef DEFAULT_DISPATCH
-#endif
diff --git a/include/clang/Analysis/Visitors/CFGRecStmtVisitor.h b/include/clang/Analysis/Visitors/CFGRecStmtVisitor.h
deleted file mode 100644
index 4d1cabfc5c0b..000000000000
--- a/include/clang/Analysis/Visitors/CFGRecStmtVisitor.h
+++ /dev/null
@@ -1,59 +0,0 @@
-//==- CFGRecStmtVisitor - Recursive visitor of CFG statements ---*- C++ --*-==//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements the template class CFGRecStmtVisitor, which extends
-// CFGStmtVisitor by implementing a default recursive visit of all statements.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_ANALYSIS_CFG_REC_STMT_VISITOR_H
-#define LLVM_CLANG_ANALYSIS_CFG_REC_STMT_VISITOR_H
-
-#include "clang/Analysis/Visitors/CFGStmtVisitor.h"
-
-namespace clang {
-template <typename ImplClass>
-class CFGRecStmtVisitor : public CFGStmtVisitor<ImplClass,void> {
-public:
-
-  void VisitStmt(Stmt *S) {
-    static_cast< ImplClass* >(this)->VisitChildren(S);
-  }
-  
-  void VisitCompoundStmt(CompoundStmt *S) {
-    // Do nothing.  Everything in a CompoundStmt is inlined
-    // into the CFG.
-  }
-  
-  void VisitConditionVariableInit(Stmt *S) {
-    assert(S == this->getCurrentBlkStmt());
-    VarDecl *CondVar = 0;
-    switch (S->getStmtClass()) {
-#define CONDVAR_CASE(CLASS) \
-case Stmt::CLASS ## Class:\
-CondVar = cast<CLASS>(S)->getConditionVariable();\
-break;
-        CONDVAR_CASE(IfStmt)
-        CONDVAR_CASE(ForStmt)
-        CONDVAR_CASE(SwitchStmt)
-        CONDVAR_CASE(WhileStmt)
-#undef CONDVAR_CASE
-      default:
-        llvm_unreachable("Infeasible");
-    }    
-    static_cast<ImplClass*>(this)->Visit(CondVar->getInit());
-  }
-
-  // Defining operator() allows the visitor to be used as a C++ style functor.
-  void operator()(Stmt *S) { static_cast<ImplClass*>(this)->BlockStmt_Visit(S);}
-};
-
-} // end namespace clang
-
-#endif
diff --git a/include/clang/Analysis/Visitors/CFGStmtVisitor.h b/include/clang/Analysis/Visitors/CFGStmtVisitor.h
deleted file mode 100644
index b354ba7b1680..000000000000
--- a/include/clang/Analysis/Visitors/CFGStmtVisitor.h
+++ /dev/null
@@ -1,175 +0,0 @@
-//===--- CFGStmtVisitor.h - Visitor for Stmts in a CFG ----------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-//  This file defines the CFGStmtVisitor interface, which extends
-//  StmtVisitor.  This interface is useful for visiting statements in a CFG
-//  where some statements have implicit control-flow and thus should
-//  be treated specially.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_ANALYSIS_CFGSTMTVISITOR_H
-#define LLVM_CLANG_ANALYSIS_CFGSTMTVISITOR_H
-
-#include "clang/AST/StmtVisitor.h"
-#include "clang/Analysis/CFG.h"
-
-namespace clang {
-
-#define DISPATCH_CASE(CLASS) \
-case Stmt::CLASS ## Class: return \
-static_cast<ImplClass*>(this)->BlockStmt_Visit ## CLASS(static_cast<CLASS*>(S));
-
-#define DEFAULT_BLOCKSTMT_VISIT(CLASS) RetTy BlockStmt_Visit ## CLASS(CLASS *S)\
-{ return\
-  static_cast<ImplClass*>(this)->BlockStmt_VisitImplicitControlFlowExpr(\
-  cast<Expr>(S)); }
-
-template <typename ImplClass, typename RetTy=void>
-class CFGStmtVisitor : public StmtVisitor<ImplClass,RetTy> {
-  Stmt *CurrentBlkStmt;
-
-  struct NullifyStmt {
-    Stmt*& S;
-
-    NullifyStmt(Stmt*& s) : S(s) {}
-    ~NullifyStmt() { S = NULL; }
-  };
-
-public:
-  CFGStmtVisitor() : CurrentBlkStmt(NULL) {}
-
-  Stmt *getCurrentBlkStmt() const { return CurrentBlkStmt; }
-
-  RetTy Visit(Stmt *S) {
-    if (S == CurrentBlkStmt ||
-        !static_cast<ImplClass*>(this)->getCFG().isBlkExpr(S))
-      return StmtVisitor<ImplClass,RetTy>::Visit(S);
-    else
-      return RetTy();
-  }
-  
-  /// VisitConditionVariableInit - Handle the initialization of condition
-  ///  variables at branches.  Valid statements include IfStmt, ForStmt,
-  ///  WhileStmt, and SwitchStmt.
-  RetTy VisitConditionVariableInit(Stmt *S) {
-    return RetTy();
-  }
-
-  /// BlockVisit_XXX - Visitor methods for visiting the "root" statements in
-  /// CFGBlocks.  Root statements are the statements that appear explicitly in
-  /// the list of statements in a CFGBlock.  For substatements, or when there
-  /// is no implementation provided for a BlockStmt_XXX method, we default
-  /// to using StmtVisitor's Visit method.
-  RetTy BlockStmt_Visit(Stmt *S) {
-    CurrentBlkStmt = S;
-    NullifyStmt cleanup(CurrentBlkStmt);
-
-    switch (S->getStmtClass()) {
-      case Stmt::IfStmtClass:
-      case Stmt::ForStmtClass:
-      case Stmt::WhileStmtClass:
-      case Stmt::SwitchStmtClass:
-        return static_cast<ImplClass*>(this)->VisitConditionVariableInit(S);
-
-      DISPATCH_CASE(StmtExpr)
-      DISPATCH_CASE(ConditionalOperator)
-      DISPATCH_CASE(BinaryConditionalOperator)
-      DISPATCH_CASE(ObjCForCollectionStmt)
-      DISPATCH_CASE(CXXForRangeStmt)
-
-      case Stmt::BinaryOperatorClass: {
-        BinaryOperator* B = cast<BinaryOperator>(S);
-        if (B->isLogicalOp())
-          return static_cast<ImplClass*>(this)->BlockStmt_VisitLogicalOp(B);
-        else if (B->getOpcode() == BO_Comma)
-          return static_cast<ImplClass*>(this)->BlockStmt_VisitComma(B);
-        // Fall through.
-      }
-
-      default:
-        if (isa<Expr>(S))
-          return
-            static_cast<ImplClass*>(this)->BlockStmt_VisitExpr(cast<Expr>(S));
-        else
-          return static_cast<ImplClass*>(this)->BlockStmt_VisitStmt(S);
-    }
-  }
-
-  DEFAULT_BLOCKSTMT_VISIT(StmtExpr)
-  DEFAULT_BLOCKSTMT_VISIT(ConditionalOperator)
-  DEFAULT_BLOCKSTMT_VISIT(BinaryConditionalOperator)
-
-  RetTy BlockStmt_VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
-    return static_cast<ImplClass*>(this)->BlockStmt_VisitStmt(S);
-  }
-
-  RetTy BlockStmt_VisitCXXForRangeStmt(CXXForRangeStmt *S) {
-    return static_cast<ImplClass*>(this)->BlockStmt_VisitStmt(S);
-  }
-
-  RetTy BlockStmt_VisitImplicitControlFlowExpr(Expr *E) {
-    return static_cast<ImplClass*>(this)->BlockStmt_VisitExpr(E);
-  }
-
-  RetTy BlockStmt_VisitExpr(Expr *E) {
-    return static_cast<ImplClass*>(this)->BlockStmt_VisitStmt(E);
-  }
-
-  RetTy BlockStmt_VisitStmt(Stmt *S) {
-    return static_cast<ImplClass*>(this)->Visit(S);
-  }
-
-  RetTy BlockStmt_VisitLogicalOp(BinaryOperator* B) {
-    return
-     static_cast<ImplClass*>(this)->BlockStmt_VisitImplicitControlFlowExpr(B);
-  }
-
-  RetTy BlockStmt_VisitComma(BinaryOperator* B) {
-    return
-     static_cast<ImplClass*>(this)->BlockStmt_VisitImplicitControlFlowExpr(B);
-  }
-
-  //===--------------------------------------------------------------------===//
-  // Utility methods.  Not called by default (but subclasses may use them).
-  //===--------------------------------------------------------------------===//
-
-  /// VisitChildren: Call "Visit" on each child of S.
-  void VisitChildren(Stmt *S) {
-
-    switch (S->getStmtClass()) {
-      default:
-        break;
-
-      case Stmt::StmtExprClass: {
-        CompoundStmt *CS = cast<StmtExpr>(S)->getSubStmt();
-        if (CS->body_empty()) return;
-        static_cast<ImplClass*>(this)->Visit(CS->body_back());
-        return;
-      }
-
-      case Stmt::BinaryOperatorClass: {
-        BinaryOperator* B = cast<BinaryOperator>(S);
-        if (B->getOpcode() != BO_Comma) break;
-        static_cast<ImplClass*>(this)->Visit(B->getRHS());
-        return;
-      }
-    }
-
-    for (Stmt::child_range I = S->children(); I; ++I)
-      if (*I) static_cast<ImplClass*>(this)->Visit(*I);
-  }
-};
-
-#undef DEFAULT_BLOCKSTMT_VISIT
-#undef DISPATCH_CASE
-
-}  // end namespace clang
-
-#endif
diff --git a/include/clang/Basic/ABI.h b/include/clang/Basic/ABI.h
index fecf613a0461..3b3d59efc015 100644
--- a/include/clang/Basic/ABI.h
+++ b/include/clang/Basic/ABI.h
@@ -39,28 +39,64 @@ struct ReturnAdjustment {
   /// \brief The non-virtual adjustment from the derived object to its
   /// nearest virtual base.
   int64_t NonVirtual;
+
+  /// \brief Holds the ABI-specific information about the virtual return
+  /// adjustment, if needed.
+  union VirtualAdjustment {
+    // Itanium ABI
+    struct {
+      /// \brief The offset (in bytes), relative to the address point
+      /// of the virtual base class offset.
+      int64_t VBaseOffsetOffset;
+    } Itanium;
+
+    // Microsoft ABI
+    struct {
+      /// \brief The offset (in bytes) of the vbptr, relative to the beginning
+      /// of the derived class.
+      uint32_t VBPtrOffset;
+
+      /// \brief Index of the virtual base in the vbtable.
+      uint32_t VBIndex;
+    } Microsoft;
+
+    VirtualAdjustment() {
+      memset(this, 0, sizeof(*this));
+    }
+
+    bool Equals(const VirtualAdjustment &Other) const {
+      return memcmp(this, &Other, sizeof(Other)) == 0;
+    }
+
+    bool isEmpty() const {
+      VirtualAdjustment Zero;
+      return Equals(Zero);
+    }
+
+    bool Less(const VirtualAdjustment &RHS) const {
+      return memcmp(this, &RHS, sizeof(RHS)) < 0;
+    }
+  } Virtual;
   
-  /// \brief The offset (in bytes), relative to the address point 
-  /// of the virtual base class offset.
-  int64_t VBaseOffsetOffset;
-  
-  ReturnAdjustment() : NonVirtual(0), VBaseOffsetOffset(0) { }
+  ReturnAdjustment() : NonVirtual(0) {}
   
-  bool isEmpty() const { return !NonVirtual && !VBaseOffsetOffset; }
+  bool isEmpty() const { return !NonVirtual && Virtual.isEmpty(); }
 
   friend bool operator==(const ReturnAdjustment &LHS, 
                          const ReturnAdjustment &RHS) {
-    return LHS.NonVirtual == RHS.NonVirtual && 
-      LHS.VBaseOffsetOffset == RHS.VBaseOffsetOffset;
+    return LHS.NonVirtual == RHS.NonVirtual && LHS.Virtual.Equals(RHS.Virtual);
+  }
+
+  friend bool operator!=(const ReturnAdjustment &LHS, const ReturnAdjustment &RHS) {
+    return !(LHS == RHS);
   }
 
   friend bool operator<(const ReturnAdjustment &LHS,
                         const ReturnAdjustment &RHS) {
     if (LHS.NonVirtual < RHS.NonVirtual)
       return true;
-    
-    return LHS.NonVirtual == RHS.NonVirtual && 
-      LHS.VBaseOffsetOffset < RHS.VBaseOffsetOffset;
+
+    return LHS.NonVirtual == RHS.NonVirtual && LHS.Virtual.Less(RHS.Virtual);
   }
 };
   
@@ -70,18 +106,57 @@ struct ThisAdjustment {
   /// nearest virtual base.
   int64_t NonVirtual;
 
-  /// \brief The offset (in bytes), relative to the address point,
-  /// of the virtual call offset.
-  int64_t VCallOffsetOffset;
+  /// \brief Holds the ABI-specific information about the virtual this
+  /// adjustment, if needed.
+  union VirtualAdjustment {
+    // Itanium ABI
+    struct {
+      /// \brief The offset (in bytes), relative to the address point,
+      /// of the virtual call offset.
+      int64_t VCallOffsetOffset;
+    } Itanium;
+
+    struct {
+      /// \brief The offset of the vtordisp (in bytes), relative to the ECX.
+      int32_t VtordispOffset;
+
+      /// \brief The offset of the vbptr of the derived class (in bytes),
+      /// relative to the ECX after vtordisp adjustment.
+      int32_t VBPtrOffset;
+
+      /// \brief The offset (in bytes) of the vbase offset in the vbtable.
+      int32_t VBOffsetOffset;
+    } Microsoft;
+
+    VirtualAdjustment() {
+      memset(this, 0, sizeof(*this));
+    }
+
+    bool Equals(const VirtualAdjustment &Other) const {
+      return memcmp(this, &Other, sizeof(Other)) == 0;
+    }
+
+    bool isEmpty() const {
+      VirtualAdjustment Zero;
+      return Equals(Zero);
+    }
+
+    bool Less(const VirtualAdjustment &RHS) const {
+      return memcmp(this, &RHS, sizeof(RHS)) < 0;
+    }
+  } Virtual;
   
-  ThisAdjustment() : NonVirtual(0), VCallOffsetOffset(0) { }
+  ThisAdjustment() : NonVirtual(0) { }
 
-  bool isEmpty() const { return !NonVirtual && !VCallOffsetOffset; }
+  bool isEmpty() const { return !NonVirtual && Virtual.isEmpty(); }
 
   friend bool operator==(const ThisAdjustment &LHS, 
                          const ThisAdjustment &RHS) {
-    return LHS.NonVirtual == RHS.NonVirtual && 
-      LHS.VCallOffsetOffset == RHS.VCallOffsetOffset;
+    return LHS.NonVirtual == RHS.NonVirtual && LHS.Virtual.Equals(RHS.Virtual);
+  }
+
+  friend bool operator!=(const ThisAdjustment &LHS, const ThisAdjustment &RHS) {
+    return !(LHS == RHS);
   }
   
   friend bool operator<(const ThisAdjustment &LHS,
@@ -89,11 +164,12 @@ struct ThisAdjustment {
     if (LHS.NonVirtual < RHS.NonVirtual)
       return true;
     
-    return LHS.NonVirtual == RHS.NonVirtual && 
-      LHS.VCallOffsetOffset < RHS.VCallOffsetOffset;
+    return LHS.NonVirtual == RHS.NonVirtual && LHS.Virtual.Less(RHS.Virtual);
   }
 };
 
+class CXXMethodDecl;
+
 /// \brief The \c this pointer adjustment as well as an optional return
 /// adjustment for a thunk.
 struct ThunkInfo {
@@ -103,23 +179,25 @@ struct ThunkInfo {
   /// \brief The return adjustment.
   ReturnAdjustment Return;
 
-  ThunkInfo() { }
+  /// \brief Holds a pointer to the overridden method this thunk is for,
+  /// if needed by the ABI to distinguish different thunks with equal
+  /// adjustments. Otherwise, null.
+  /// CAUTION: In the unlikely event you need to sort ThunkInfos, consider using
+  /// an ABI-specific comparator.
+  const CXXMethodDecl *Method;
 
-  ThunkInfo(const ThisAdjustment &This, const ReturnAdjustment &Return)
-    : This(This), Return(Return) { }
+  ThunkInfo() : Method(0) { }
 
-  friend bool operator==(const ThunkInfo &LHS, const ThunkInfo &RHS) {
-    return LHS.This == RHS.This && LHS.Return == RHS.Return;
-  }
+  ThunkInfo(const ThisAdjustment &This, const ReturnAdjustment &Return,
+            const CXXMethodDecl *Method = 0)
+      : This(This), Return(Return), Method(Method) {}
 
-  friend bool operator<(const ThunkInfo &LHS, const ThunkInfo &RHS) {
-    if (LHS.This < RHS.This)
-      return true;
-      
-    return LHS.This == RHS.This && LHS.Return < RHS.Return;
+  friend bool operator==(const ThunkInfo &LHS, const ThunkInfo &RHS) {
+    return LHS.This == RHS.This && LHS.Return == RHS.Return &&
+           LHS.Method == RHS.Method;
   }
 
-  bool isEmpty() const { return This.isEmpty() && Return.isEmpty(); }
+  bool isEmpty() const { return This.isEmpty() && Return.isEmpty() && Method == 0; }
 };  
 
 } // end namespace clang
diff --git a/include/clang/Basic/Attr.td b/include/clang/Basic/Attr.td
index 441a79a23b26..8c3bdba89a8c 100644
--- a/include/clang/Basic/Attr.td
+++ b/include/clang/Basic/Attr.td
@@ -1,8 +1,11 @@
-////////////////////////////////////////////////////////////////////////////////
-// Note: This file is a work in progress. Please do not apply non-trivial
-// updates unless you have talked to Sean Hunt <rideau3@gmail.com> prior.
-// Merely adding a new attribute is a trivial update.
-////////////////////////////////////////////////////////////////////////////////
+//==--- Attr.td - attribute definitions -----------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
 
 // An attribute's subject is whatever it appertains to. In this file, it is
 // more accurately a list of things that an attribute can appertain to. All
@@ -36,45 +39,53 @@ def NormalVar : SubsetSubject<Var, "non-register, non-parameter variable",
                                 S->getKind() != Decl::ImplicitParam &&
                                 S->getKind() != Decl::ParmVar &&
                                 S->getKind() != Decl::NonTypeTemplateParm}]>;
-def CXXVirtualMethod : SubsetSubject<CXXRecord, "virtual member function",
-                                     [{S->isVirtual()}]>;
 def NonBitField : SubsetSubject<Field, "non-bit field",
                                 [{!S->isBitField()}]>;
 
 // A single argument to an attribute
-class Argument<string name> {
+class Argument<string name, bit optional> {
   string Name = name;
+  bit Optional = optional;
 }
 
-class BoolArgument<string name> : Argument<name>;
-class IdentifierArgument<string name> : Argument<name>;
-class IntArgument<string name> : Argument<name>;
-class StringArgument<string name> : Argument<name>;
-class ExprArgument<string name> : Argument<name>;
-class FunctionArgument<string name> : Argument<name>;
-class TypeArgument<string name> : Argument<name>;
-class UnsignedArgument<string name> : Argument<name>;
-class SourceLocArgument<string name> : Argument<name>;
-class VariadicUnsignedArgument<string name> : Argument<name>;
-class VariadicExprArgument<string name> : Argument<name>;
+class BoolArgument<string name, bit opt = 0> : Argument<name, opt>;
+class IdentifierArgument<string name, bit opt = 0> : Argument<name, opt>;
+class IntArgument<string name, bit opt = 0> : Argument<name, opt>;
+class StringArgument<string name, bit opt = 0> : Argument<name, opt>;
+class ExprArgument<string name, bit opt = 0> : Argument<name, opt>;
+class FunctionArgument<string name, bit opt = 0> : Argument<name, opt>;
+class TypeArgument<string name, bit opt = 0> : Argument<name, opt>;
+class UnsignedArgument<string name, bit opt = 0> : Argument<name, opt>;
+class SourceLocArgument<string name, bit opt = 0> : Argument<name, opt>;
+class VariadicUnsignedArgument<string name> : Argument<name, 1>;
+class VariadicExprArgument<string name> : Argument<name, 1>;
 
 // A version of the form major.minor[.subminor].
-class VersionArgument<string name> : Argument<name>;
+class VersionArgument<string name, bit opt = 0> : Argument<name, opt>;
 
 // This one's a doozy, so it gets its own special type
 // It can be an unsigned integer, or a type. Either can
 // be dependent.
-class AlignedArgument<string name> : Argument<name>;
+class AlignedArgument<string name, bit opt = 0> : Argument<name, opt>;
 
 // An integer argument with a default value
-class DefaultIntArgument<string name, int default> : IntArgument<name> {
+class DefaultIntArgument<string name, int default> : IntArgument<name, 1> {
   int Default = default;
 }
 
 // This argument is more complex, it includes the enumerator type name,
 // a list of strings to accept, and a list of enumerators to map them to.
 class EnumArgument<string name, string type, list<string> values,
-                         list<string> enums> : Argument<name> {
+                   list<string> enums, bit opt = 0> : Argument<name, opt> {
+  string Type = type;
+  list<string> Values = values;
+  list<string> Enums = enums;
+}
+
+// FIXME: There should be a VariadicArgument type that takes any other type
+//        of argument and generates the appropriate type.
+class VariadicEnumArgument<string name, string type, list<string> values,
+                           list<string> enums> : Argument<name, 1>  {
   string Type = type;
   list<string> Values = values;
   list<string> Enums = enums;
@@ -122,13 +133,27 @@ class Attr {
   bit Ignored = 0;
   // Set to true if each of the spellings is a distinct attribute.
   bit DistinctSpellings = 0;
+  // Set to true if the attribute's parsing does not match its semantic
+  // content. Eg) It parses 3 args, but semantically takes 4 args.  Opts out of
+  // common attribute error checking.
+  bit HasCustomParsing = 0;
   // Any additional text that should be included verbatim in the class.
   code AdditionalMembers = [{}];
 }
 
+/// A type attribute is not processed on a declaration or a statement.
+class TypeAttr : Attr {
+  let ASTNode = 0;
+}
+
 /// An inheritable attribute is inherited by later redeclarations.
 class InheritableAttr : Attr;
 
+/// A target-specific attribute that is meant to be processed via
+/// TargetAttributesSema::ProcessDeclAttribute.  This class is meant to be used
+/// as a mixin with InheritableAttr or Attr depending on the attribute's needs.
+class TargetSpecificAttr;
+
 /// An inheritable parameter attribute is inherited by later
 /// redeclarations, even when it's written on a parameter.
 class InheritableParamAttr : InheritableAttr;
@@ -144,13 +169,12 @@ class IgnoredAttr : Attr {
 // Attributes begin here
 //
 
-def AddressSpace : Attr {
+def AddressSpace : TypeAttr {
   let Spellings = [GNU<"address_space">];
   let Args = [IntArgument<"AddressSpace">];
-  let ASTNode = 0;
 }
 
-def Alias : InheritableAttr {
+def Alias : Attr {
   let Spellings = [GNU<"alias">, CXX11<"gnu", "alias">];
   let Args = [StringArgument<"Aliasee">];
 }
@@ -159,7 +183,7 @@ def Aligned : InheritableAttr {
   let Spellings = [GNU<"aligned">, Declspec<"align">, CXX11<"gnu", "aligned">,
                    Keyword<"alignas">, Keyword<"_Alignas">];
   let Subjects = [NonBitField, NormalVar, Tag];
-  let Args = [AlignedArgument<"Alignment">];
+  let Args = [AlignedArgument<"Alignment", 1>];
   let Accessors = [Accessor<"isGNU", [GNU<"aligned">, CXX11<"gnu","aligned">]>,
                    Accessor<"isC11", [Keyword<"_Alignas">]>,
                    Accessor<"isAlignas", [Keyword<"alignas">,
@@ -172,7 +196,7 @@ def AlignMac68k : InheritableAttr {
   let SemaHandler = 0;
 }
 
-def AllocSize : Attr {
+def AllocSize : InheritableAttr {
   let Spellings = [GNU<"alloc_size">, CXX11<"gnu", "alloc_size">];
   let Args = [VariadicUnsignedArgument<"Args">];
 }
@@ -196,6 +220,14 @@ def Annotate : InheritableParamAttr {
   let Args = [StringArgument<"Annotation">];
 }
 
+def ARMInterrupt : InheritableAttr, TargetSpecificAttr {
+  let Spellings = [GNU<"interrupt">];
+  let Args = [EnumArgument<"Interrupt", "InterruptType",
+                           ["IRQ", "FIQ", "SWI", "ABORT", "UNDEF", ""],
+                           ["IRQ", "FIQ", "SWI", "ABORT", "UNDEF", "Generic"],
+                           1>];
+}
+
 def AsmLabel : InheritableAttr {
   let Spellings = [];
   let Args = [StringArgument<"Label">];
@@ -214,6 +246,7 @@ def Availability : InheritableAttr {
              .Case("macosx", "OS X")
              .Default(llvm::StringRef());
 } }];
+  let HasCustomParsing = 1;
 }
 
 def Blocks : InheritableAttr {
@@ -282,12 +315,13 @@ def Common : InheritableAttr {
 }
 
 def Const : InheritableAttr {
-  let Spellings = [GNU<"const">, GNU<"__const">, CXX11<"gnu", "const">];
+  let Spellings = [GNU<"const">, GNU<"__const">,
+                   CXX11<"gnu", "const">, CXX11<"gnu", "__const">];
 }
 
 def Constructor : InheritableAttr {
   let Spellings = [GNU<"constructor">, CXX11<"gnu", "constructor">];
-  let Args = [IntArgument<"Priority">];
+  let Args = [IntArgument<"Priority", 1>];
 }
 
 def CUDAConstant : InheritableAttr {
@@ -326,7 +360,7 @@ def CXX11NoReturn : InheritableAttr {
   let Subjects = [Function];
 }
 
-def OpenCLKernel : Attr {
+def OpenCLKernel : InheritableAttr {
   let Spellings = [Keyword<"__kernel">, Keyword<"kernel">];
 }
 
@@ -336,13 +370,14 @@ def OpenCLImageAccess : Attr {
 }
 
 def Deprecated : InheritableAttr {
-  let Spellings = [GNU<"deprecated">, CXX11<"gnu", "deprecated">];
-  let Args = [StringArgument<"Message">];
+  let Spellings = [GNU<"deprecated">,
+                   CXX11<"gnu", "deprecated">, CXX11<"","deprecated">];
+  let Args = [StringArgument<"Message", 1>];
 }
 
 def Destructor : InheritableAttr {
   let Spellings = [GNU<"destructor">, CXX11<"gnu", "destructor">];
-  let Args = [IntArgument<"Priority">];
+  let Args = [IntArgument<"Priority", 1>];
 }
 
 def ExtVectorType : Attr {
@@ -362,7 +397,8 @@ def FastCall : InheritableAttr {
 }
 
 def Final : InheritableAttr {
-  let Spellings = [];
+  let Spellings = [Keyword<"final">, Keyword<"sealed">];
+  let Accessors = [Accessor<"isSpelledAsSealed", [Keyword<"sealed">]>];
   let SemaHandler = 0;
 }
 
@@ -373,7 +409,7 @@ def MinSize : InheritableAttr {
 
 def Format : InheritableAttr {
   let Spellings = [GNU<"format">, CXX11<"gnu", "format">];
-  let Args = [StringArgument<"Type">, IntArgument<"FormatIdx">,
+  let Args = [IdentifierArgument<"Type">, IntArgument<"FormatIdx">,
               IntArgument<"FirstArg">];
 }
 
@@ -400,7 +436,7 @@ def IBOutlet : InheritableAttr {
 
 def IBOutletCollection : InheritableAttr {
   let Spellings = [GNU<"iboutletcollection">];
-  let Args = [TypeArgument<"Interface">, SourceLocArgument<"InterfaceLoc">];
+  let Args = [TypeArgument<"Interface", 1>];
 }
 
 def Malloc : InheritableAttr {
@@ -417,23 +453,17 @@ def MayAlias : InheritableAttr {
   let Spellings = [GNU<"may_alias">, CXX11<"gnu", "may_alias">];
 }
 
-def MSP430Interrupt : InheritableAttr {
-  let Spellings = [];
-  let Args = [UnsignedArgument<"Number">];
-  let SemaHandler = 0;
-}
-
-def MBlazeInterruptHandler : InheritableAttr {
-  let Spellings = [];
-  let SemaHandler = 0;
+def MSABI : InheritableAttr {
+  let Spellings = [GNU<"ms_abi">, CXX11<"gnu", "ms_abi">];
 }
 
-def MBlazeSaveVolatiles : InheritableAttr {
+def MSP430Interrupt : InheritableAttr, TargetSpecificAttr {
   let Spellings = [];
+  let Args = [UnsignedArgument<"Number">];
   let SemaHandler = 0;
 }
 
-def Mips16 : InheritableAttr {
+def Mips16 : InheritableAttr, TargetSpecificAttr {
   let Spellings = [GNU<"mips16">, CXX11<"gnu", "mips16">];
   let Subjects = [Function];
 }
@@ -441,23 +471,20 @@ def Mips16 : InheritableAttr {
 def Mode : Attr {
   let Spellings = [GNU<"mode">, CXX11<"gnu", "mode">];
   let Args = [IdentifierArgument<"Mode">];
-  let ASTNode = 0;
 }
 
 def Naked : InheritableAttr {
   let Spellings = [GNU<"naked">, CXX11<"gnu", "naked">];
 }
 
-def NeonPolyVectorType : Attr {
+def NeonPolyVectorType : TypeAttr {
   let Spellings = [GNU<"neon_polyvector_type">];
   let Args = [IntArgument<"NumElements">];
-  let ASTNode = 0;
 }
 
-def NeonVectorType : Attr {
+def NeonVectorType : TypeAttr {
   let Spellings = [GNU<"neon_vector_type">];
   let Args = [IntArgument<"NumElements">];
-  let ASTNode = 0;
 }
 
 def ReturnsTwice : InheritableAttr {
@@ -476,7 +503,7 @@ def NoInline : InheritableAttr {
   let Spellings = [GNU<"noinline">, CXX11<"gnu", "noinline">];
 }
 
-def NoMips16 : InheritableAttr {
+def NoMips16 : InheritableAttr, TargetSpecificAttr {
   let Spellings = [GNU<"nomips16">, CXX11<"gnu", "nomips16">];
   let Subjects = [Function];
 }
@@ -513,7 +540,13 @@ def NoThrow : InheritableAttr {
 def NSBridged : InheritableAttr {
   let Spellings = [GNU<"ns_bridged">];
   let Subjects = [Record];
-  let Args = [IdentifierArgument<"BridgedType">];
+  let Args = [IdentifierArgument<"BridgedType", 1>];
+}
+
+def ObjCBridge : InheritableAttr {
+  let Spellings = [GNU<"objc_bridge">];
+  let Subjects = [Record];
+  let Args = [IdentifierArgument<"BridgedType", 1>];
 }
 
 def NSReturnsRetained : InheritableAttr {
@@ -558,14 +591,14 @@ def ObjCNSObject : InheritableAttr {
   let Spellings = [GNU<"NSObject">];
 }
 
-def ObjCPreciseLifetime : Attr {
+def ObjCPreciseLifetime : InheritableAttr {
   let Spellings = [GNU<"objc_precise_lifetime">];
   let Subjects = [Var];
 }
 
-def ObjCReturnsInnerPointer : Attr {
+def ObjCReturnsInnerPointer : InheritableAttr {
   let Spellings = [GNU<"objc_returns_inner_pointer">];
-  let Subjects = [ObjCMethod];
+  let Subjects = [ObjCMethod, ObjCProperty];
 }
 
 def ObjCRequiresSuper : InheritableAttr {
@@ -573,7 +606,7 @@ def ObjCRequiresSuper : InheritableAttr {
   let Subjects = [ObjCMethod];
 }
 
-def ObjCRootClass : Attr {
+def ObjCRootClass : InheritableAttr {
   let Spellings = [GNU<"objc_root_class">];
   let Subjects = [ObjCInterface];
 }
@@ -595,6 +628,7 @@ def Ownership : InheritableAttr {
                     ["ownership_holds", "ownership_returns", "ownership_takes"],
                     ["Holds", "Returns", "Takes"]>,
               StringArgument<"Module">, VariadicUnsignedArgument<"Args">];
+  let HasCustomParsing = 1;
 }
 
 def Packed : InheritableAttr {
@@ -631,11 +665,6 @@ def ReqdWorkGroupSize : InheritableAttr {
               UnsignedArgument<"ZDim">];
 }
 
-def Endian : InheritableAttr {
-  let Spellings = [GNU<"endian">];
-  let Args = [IdentifierArgument<"platform">];
-}
-
 def WorkGroupSizeHint :  InheritableAttr {
   let Spellings = [GNU<"work_group_size_hint">];
   let Args = [UnsignedArgument<"XDim">, 
@@ -664,6 +693,10 @@ def StdCall : InheritableAttr {
                    Keyword<"__stdcall">, Keyword<"_stdcall">];
 }
 
+def SysVABI : InheritableAttr {
+  let Spellings = [GNU<"sysv_abi">, CXX11<"gnu", "sysv_abi">];
+}
+
 def ThisCall : InheritableAttr {
   let Spellings = [GNU<"thiscall">, CXX11<"gnu", "thiscall">,
                    Keyword<"__thiscall">, Keyword<"_thiscall">];
@@ -679,7 +712,7 @@ def TransparentUnion : InheritableAttr {
 
 def Unavailable : InheritableAttr {
   let Spellings = [GNU<"unavailable">];
-  let Args = [StringArgument<"Message">];
+  let Args = [StringArgument<"Message", 1>];
 }
 
 def ArcWeakrefUnavailable : InheritableAttr {
@@ -687,13 +720,12 @@ def ArcWeakrefUnavailable : InheritableAttr {
   let Subjects = [ObjCInterface];
 }
 
-def ObjCGC : Attr {
+def ObjCGC : TypeAttr {
   let Spellings = [GNU<"objc_gc">];
   let Args = [IdentifierArgument<"Kind">];
-  let ASTNode = 0;
 }
 
-def ObjCOwnership : Attr {
+def ObjCOwnership : InheritableAttr {
   let Spellings = [GNU<"objc_ownership">];
   let Args = [IdentifierArgument<"Kind">];
   let ASTNode = 0;
@@ -718,15 +750,14 @@ def Uuid : InheritableAttr {
   let Subjects = [CXXRecord];
 }
 
-def VectorSize : Attr {
+def VectorSize : TypeAttr {
   let Spellings = [GNU<"vector_size">, CXX11<"gnu", "vector_size">];
   let Args = [ExprArgument<"NumBytes">];
-  let ASTNode = 0;
 }
 
 def VecTypeHint : InheritableAttr {
   let Spellings = [GNU<"vec_type_hint">];
-  let Args = [TypeArgument<"TypeHint">, SourceLocArgument<"TypeLoc">];
+  let Args = [TypeArgument<"TypeHint">];
 }
 
 def Visibility : InheritableAttr {
@@ -750,6 +781,11 @@ def VecReturn : InheritableAttr {
   let Subjects = [CXXRecord];
 }
 
+def WarnUnused : InheritableAttr {
+  let Spellings = [GNU<"warn_unused">];
+  let Subjects = [Record];
+}
+
 def WarnUnusedResult : InheritableAttr {
   let Spellings = [GNU<"warn_unused_result">,
                    CXX11<"clang", "warn_unused_result">,
@@ -766,16 +802,20 @@ def WeakImport : InheritableAttr {
 
 def WeakRef : InheritableAttr {
   let Spellings = [GNU<"weakref">, CXX11<"gnu", "weakref">];
+  // A WeakRef that has an argument is treated as being an AliasAttr
+  let Args = [StringArgument<"Aliasee", 1>];
 }
 
-def X86ForceAlignArgPointer : InheritableAttr {
+def X86ForceAlignArgPointer : InheritableAttr, TargetSpecificAttr {
   let Spellings = [];
 }
 
 // Attribute to disable AddressSanitizer (or equivalent) checks.
 def NoSanitizeAddress : InheritableAttr {
   let Spellings = [GNU<"no_address_safety_analysis">,
-                   GNU<"no_sanitize_address">];
+                   GNU<"no_sanitize_address">,
+                   CXX11<"gnu", "no_address_safety_analysis">,
+                   CXX11<"gnu", "no_sanitize_address">];
 }
 
 // Attribute to disable ThreadSanitizer checks.
@@ -852,6 +892,20 @@ def SharedLockFunction : InheritableAttr {
   let TemplateDependent = 1;
 }
 
+def AssertExclusiveLock : InheritableAttr {
+  let Spellings = [GNU<"assert_exclusive_lock">];
+  let Args = [VariadicExprArgument<"Args">];
+  let LateParsed = 1;
+  let TemplateDependent = 1;
+}
+
+def AssertSharedLock : InheritableAttr {
+  let Spellings = [GNU<"assert_shared_lock">];
+  let Args = [VariadicExprArgument<"Args">];
+  let LateParsed = 1;
+  let TemplateDependent = 1;
+}
+
 // The first argument is an integer or boolean value specifying the return value
 // of a successful lock acquisition.
 def ExclusiveTrylockFunction : InheritableAttr {
@@ -905,6 +959,56 @@ def SharedLocksRequired : InheritableAttr {
   let TemplateDependent = 1;
 }
 
+// C/C++ consumed attributes.
+
+def Consumable : InheritableAttr {
+  let Spellings = [GNU<"consumable">];
+  let Subjects = [CXXRecord];
+  let Args = [EnumArgument<"DefaultState", "ConsumedState",
+                           ["unknown", "consumed", "unconsumed"],
+                           ["Unknown", "Consumed", "Unconsumed"]>];
+}
+
+def CallableWhen : InheritableAttr {
+  let Spellings = [GNU<"callable_when">];
+  let Subjects = [CXXMethod];
+  let Args = [VariadicEnumArgument<"CallableState", "ConsumedState",
+                                   ["unknown", "consumed", "unconsumed"],
+                                   ["Unknown", "Consumed", "Unconsumed"]>];
+}
+
+def ParamTypestate : InheritableAttr {
+  let Spellings = [GNU<"param_typestate">];
+  let Subjects = [ParmVar];
+  let Args = [EnumArgument<"ParamState", "ConsumedState",
+                           ["unknown", "consumed", "unconsumed"],
+                           ["Unknown", "Consumed", "Unconsumed"]>];
+}
+
+def ReturnTypestate : InheritableAttr {
+  let Spellings = [GNU<"return_typestate">];
+  let Subjects = [Function, ParmVar];
+  let Args = [EnumArgument<"State", "ConsumedState",
+                           ["unknown", "consumed", "unconsumed"],
+                           ["Unknown", "Consumed", "Unconsumed"]>];
+}
+
+def SetTypestate : InheritableAttr {
+  let Spellings = [GNU<"set_typestate">];
+  let Subjects = [CXXMethod];
+  let Args = [EnumArgument<"NewState", "ConsumedState",
+                           ["unknown", "consumed", "unconsumed"],
+                           ["Unknown", "Consumed", "Unconsumed"]>];
+}
+
+def TestTypestate : InheritableAttr {
+  let Spellings = [GNU<"test_typestate">];
+  let Subjects = [CXXMethod];
+  let Args = [EnumArgument<"TestState", "ConsumedState",
+                           ["consumed", "unconsumed"],
+                           ["Consumed", "Unconsumed"]>];
+}
+
 // Type safety attributes for `void *' pointers and type tags.
 
 def ArgumentWithTypeTag : InheritableAttr {
@@ -915,6 +1019,7 @@ def ArgumentWithTypeTag : InheritableAttr {
               UnsignedArgument<"TypeTagIdx">,
               BoolArgument<"IsPointer">];
   let Subjects = [Function];
+  let HasCustomParsing = 1;
 }
 
 def TypeTagForDatatype : InheritableAttr {
@@ -924,11 +1029,12 @@ def TypeTagForDatatype : InheritableAttr {
               BoolArgument<"LayoutCompatible">,
               BoolArgument<"MustBeNull">];
   let Subjects = [Var];
+  let HasCustomParsing = 1;
 }
 
 // Microsoft-related attributes
 
-def MsProperty : Attr {
+def MsProperty : IgnoredAttr {
   let Spellings = [Declspec<"property">];
 }
 
@@ -936,11 +1042,11 @@ def MsStruct : InheritableAttr {
   let Spellings = [Declspec<"ms_struct">];
 }
 
-def DLLExport : InheritableAttr {
+def DLLExport : InheritableAttr, TargetSpecificAttr {
   let Spellings = [Declspec<"dllexport">];
 }
 
-def DLLImport : InheritableAttr {
+def DLLImport : InheritableAttr, TargetSpecificAttr {
   let Spellings = [Declspec<"dllimport">];
 }
 
@@ -948,18 +1054,30 @@ def ForceInline : InheritableAttr {
   let Spellings = [Keyword<"__forceinline">];
 }
 
+def SelectAny : InheritableAttr {
+  let Spellings = [Declspec<"selectany">];
+}
+
 def Win64 : InheritableAttr {
   let Spellings = [Keyword<"__w64">];
 }
 
-def Ptr32 : InheritableAttr {
+def Ptr32 : TypeAttr {
   let Spellings = [Keyword<"__ptr32">];
 }
 
-def Ptr64 : InheritableAttr {
+def Ptr64 : TypeAttr {
   let Spellings = [Keyword<"__ptr64">];
 }
 
+def SPtr : TypeAttr {
+  let Spellings = [Keyword<"__sptr">];
+}
+
+def UPtr : TypeAttr {
+  let Spellings = [Keyword<"__uptr">];
+}
+
 class MSInheritanceAttr : InheritableAttr;
 
 def SingleInheritance : MSInheritanceAttr {
diff --git a/include/clang/Basic/AttrKinds.h b/include/clang/Basic/AttrKinds.h
index bd090ecc0d1b..7c4e2c75f04d 100644
--- a/include/clang/Basic/AttrKinds.h
+++ b/include/clang/Basic/AttrKinds.h
@@ -24,7 +24,7 @@ enum Kind {
 #define ATTR(X) X,
 #define LAST_INHERITABLE_ATTR(X) X, LAST_INHERITABLE = X,
 #define LAST_INHERITABLE_PARAM_ATTR(X) X, LAST_INHERITABLE_PARAM = X,
-#define LAST_MS_INHERITABLE_ATTR(X) X, LAST_MS_INHERITABLE = X,
+#define LAST_MS_INHERITANCE_ATTR(X) X, LAST_MS_INHERITANCE = X,
 #include "clang/Basic/AttrList.inc"
   NUM_ATTRS
 };
diff --git a/include/clang/Basic/Builtins.def b/include/clang/Basic/Builtins.def
index 0a513efdbc16..55c6ed7deead 100644
--- a/include/clang/Basic/Builtins.def
+++ b/include/clang/Basic/Builtins.def
@@ -25,6 +25,7 @@
 //  c -> char
 //  s -> short
 //  i -> int
+//  h -> half
 //  f -> float
 //  d -> double
 //  z -> size_t
@@ -70,6 +71,8 @@
 //  f -> this is a libc/libm function without the '__builtin_' prefix. It can
 //       be followed by ':headername:' to state which header this function
 //       comes from.
+//  i -> this is a runtime library implemented function without the
+//       '__builtin_' prefix. It will be implemented in compiter-rt or libgcc.
 //  p:N: -> this is a printf-like function whose Nth argument is the format
 //          string.
 //  P:N: -> similar to the p:N: attribute, but the function is like vprintf
@@ -89,6 +92,10 @@
 #  define LIBBUILTIN(ID, TYPE, ATTRS, HEADER, BUILTIN_LANG) BUILTIN(ID, TYPE, ATTRS)
 #endif
 
+#if defined(BUILTIN) && !defined(LANGBUILTIN)
+#  define LANGBUILTIN(ID, TYPE, ATTRS, BUILTIN_LANG) BUILTIN(ID, TYPE, ATTRS)
+#endif
+
 // Standard libc/libm functions:
 BUILTIN(__builtin_atan2 , "ddd"  , "Fnc")
 BUILTIN(__builtin_atan2f, "fff"  , "Fnc")
@@ -236,8 +243,8 @@ BUILTIN(__builtin_nearbyintl, "LdLd", "Fnc")
 BUILTIN(__builtin_nextafter , "ddd", "Fnc")
 BUILTIN(__builtin_nextafterf, "fff", "Fnc")
 BUILTIN(__builtin_nextafterl, "LdLdLd", "Fnc")
-BUILTIN(__builtin_nexttoward , "ddd", "Fnc")
-BUILTIN(__builtin_nexttowardf, "fff", "Fnc")
+BUILTIN(__builtin_nexttoward , "ddLd", "Fnc")
+BUILTIN(__builtin_nexttowardf, "ffLd", "Fnc")
 BUILTIN(__builtin_nexttowardl, "LdLdLd", "Fnc")
 BUILTIN(__builtin_remainder , "ddd", "Fnc")
 BUILTIN(__builtin_remainderf, "fff", "Fnc")
@@ -485,6 +492,7 @@ BUILTIN(__builtin_trap, "v", "nr")
 BUILTIN(__builtin_debugtrap, "v", "n")
 BUILTIN(__builtin_unreachable, "v", "nr")
 BUILTIN(__builtin_shufflevector, "v."   , "nc")
+BUILTIN(__builtin_convertvector, "v."   , "nct")
 BUILTIN(__builtin_alloca, "v*z"   , "n")
 
 // "Overloaded" Atomic operator builtins.  These are overloaded to support data
@@ -666,11 +674,11 @@ BUILTIN(__builtin_abort, "v", "Fnr")
 BUILTIN(__builtin_index, "c*cC*i", "Fn")
 BUILTIN(__builtin_rindex, "c*cC*i", "Fn")
 
-// Microsoft builtins.
-BUILTIN(__assume, "vb", "n")
-BUILTIN(__noop, "v.", "n")
-BUILTIN(__debugbreak, "v", "n")
-
+// Microsoft builtins.  These are only active with -fms-extensions.
+LANGBUILTIN(_alloca,      "v*z", "n", ALL_MS_LANGUAGES)
+LANGBUILTIN(__assume,     "vb",  "n", ALL_MS_LANGUAGES)
+LANGBUILTIN(__noop,       "v.",  "n", ALL_MS_LANGUAGES)
+LANGBUILTIN(__debugbreak, "v",   "n", ALL_MS_LANGUAGES)
 
 // C99 library functions
 // C99 stdlib.h
@@ -718,48 +726,47 @@ LIBBUILTIN(vscanf, "icC*Ra",      "fS:0:", "stdio.h", ALL_LANGUAGES)
 LIBBUILTIN(vfscanf, "iP*RcC*Ra",  "fS:1:", "stdio.h", ALL_LANGUAGES)
 LIBBUILTIN(vsscanf, "icC*RcC*Ra", "fS:1:", "stdio.h", ALL_LANGUAGES)
 // C99
+#undef setjmp
+LIBBUILTIN(setjmp, "iJ",          "fj",    "setjmp.h", ALL_LANGUAGES)
 LIBBUILTIN(longjmp, "vJi",        "fr",    "setjmp.h", ALL_LANGUAGES)
 
-// Non-C library functions
-// FIXME: Non-C-standard stuff shouldn't be builtins in non-GNU mode!
-LIBBUILTIN(alloca, "v*z",         "f",     "stdlib.h", ALL_LANGUAGES)
+// Non-C library functions, active in GNU mode only.
+LIBBUILTIN(alloca, "v*z",         "f",     "stdlib.h", ALL_GNU_LANGUAGES)
 // POSIX string.h
-LIBBUILTIN(stpcpy, "c*c*cC*",     "f",     "string.h", ALL_LANGUAGES)
-LIBBUILTIN(stpncpy, "c*c*cC*z",   "f",     "string.h", ALL_LANGUAGES)
-LIBBUILTIN(strdup, "c*cC*",       "f",     "string.h", ALL_LANGUAGES)
-LIBBUILTIN(strndup, "c*cC*z",     "f",     "string.h", ALL_LANGUAGES)
+LIBBUILTIN(stpcpy, "c*c*cC*",     "f",     "string.h", ALL_GNU_LANGUAGES)
+LIBBUILTIN(stpncpy, "c*c*cC*z",   "f",     "string.h", ALL_GNU_LANGUAGES)
+LIBBUILTIN(strdup, "c*cC*",       "f",     "string.h", ALL_GNU_LANGUAGES)
+LIBBUILTIN(strndup, "c*cC*z",     "f",     "string.h", ALL_GNU_LANGUAGES)
 // POSIX strings.h
-LIBBUILTIN(index, "c*cC*i",       "f",     "strings.h", ALL_LANGUAGES)
-LIBBUILTIN(rindex, "c*cC*i",      "f",     "strings.h", ALL_LANGUAGES)
-LIBBUILTIN(bzero, "vv*z",         "f",     "strings.h", ALL_LANGUAGES)
+LIBBUILTIN(index, "c*cC*i",       "f",     "strings.h", ALL_GNU_LANGUAGES)
+LIBBUILTIN(rindex, "c*cC*i",      "f",     "strings.h", ALL_GNU_LANGUAGES)
+LIBBUILTIN(bzero, "vv*z",         "f",     "strings.h", ALL_GNU_LANGUAGES)
 // In some systems str[n]casejmp is a macro that expands to _str[n]icmp.
 // We undefine then here to avoid wrong name.
 #undef strcasecmp
 #undef strncasecmp
-LIBBUILTIN(strcasecmp, "icC*cC*", "f",     "strings.h", ALL_LANGUAGES)
-LIBBUILTIN(strncasecmp, "icC*cC*z", "f",   "strings.h", ALL_LANGUAGES)
+LIBBUILTIN(strcasecmp, "icC*cC*", "f",     "strings.h", ALL_GNU_LANGUAGES)
+LIBBUILTIN(strncasecmp, "icC*cC*z", "f",   "strings.h", ALL_GNU_LANGUAGES)
 // POSIX unistd.h
-LIBBUILTIN(_exit, "vi",           "fr",    "unistd.h", ALL_LANGUAGES)
-LIBBUILTIN(vfork, "p",            "fj",    "unistd.h", ALL_LANGUAGES)
+LIBBUILTIN(_exit, "vi",           "fr",    "unistd.h", ALL_GNU_LANGUAGES)
+LIBBUILTIN(vfork, "p",            "fj",    "unistd.h", ALL_GNU_LANGUAGES)
 // POSIX setjmp.h
 
 // In some systems setjmp is a macro that expands to _setjmp. We undefine
 // it here to avoid having two identical LIBBUILTIN entries.
-#undef setjmp
-LIBBUILTIN(_setjmp, "iJ",         "fj",   "setjmp.h", ALL_LANGUAGES)
-LIBBUILTIN(__sigsetjmp, "iSJi",   "fj",   "setjmp.h", ALL_LANGUAGES)
-LIBBUILTIN(setjmp, "iJ",          "fj",   "setjmp.h", ALL_LANGUAGES)
-LIBBUILTIN(sigsetjmp, "iSJi",     "fj",   "setjmp.h", ALL_LANGUAGES)
-LIBBUILTIN(setjmp_syscall, "iJ",  "fj",   "setjmp.h", ALL_LANGUAGES)
-LIBBUILTIN(savectx, "iJ",         "fj",   "setjmp.h", ALL_LANGUAGES)
-LIBBUILTIN(qsetjmp, "iJ",         "fj",   "setjmp.h", ALL_LANGUAGES)
-LIBBUILTIN(getcontext, "iK*",     "fj",   "setjmp.h", ALL_LANGUAGES)
-
-LIBBUILTIN(_longjmp, "vJi",       "fr",    "setjmp.h", ALL_LANGUAGES)
-LIBBUILTIN(siglongjmp, "vSJi",    "fr",    "setjmp.h", ALL_LANGUAGES)
+LIBBUILTIN(_setjmp, "iJ",         "fj",   "setjmp.h", ALL_GNU_LANGUAGES)
+LIBBUILTIN(__sigsetjmp, "iSJi",   "fj",   "setjmp.h", ALL_GNU_LANGUAGES)
+LIBBUILTIN(sigsetjmp, "iSJi",     "fj",   "setjmp.h", ALL_GNU_LANGUAGES)
+LIBBUILTIN(setjmp_syscall, "iJ",  "fj",   "setjmp.h", ALL_GNU_LANGUAGES)
+LIBBUILTIN(savectx, "iJ",         "fj",   "setjmp.h", ALL_GNU_LANGUAGES)
+LIBBUILTIN(qsetjmp, "iJ",         "fj",   "setjmp.h", ALL_GNU_LANGUAGES)
+LIBBUILTIN(getcontext, "iK*",     "fj",   "setjmp.h", ALL_GNU_LANGUAGES)
+
+LIBBUILTIN(_longjmp, "vJi",       "fr",    "setjmp.h", ALL_GNU_LANGUAGES)
+LIBBUILTIN(siglongjmp, "vSJi",    "fr",    "setjmp.h", ALL_GNU_LANGUAGES)
 // non-standard but very common
-LIBBUILTIN(strlcpy, "zc*cC*z",    "f",     "string.h", ALL_LANGUAGES)
-LIBBUILTIN(strlcat, "zc*cC*z",    "f",     "string.h", ALL_LANGUAGES)
+LIBBUILTIN(strlcpy, "zc*cC*z",    "f",     "string.h", ALL_GNU_LANGUAGES)
+LIBBUILTIN(strlcat, "zc*cC*z",    "f",     "string.h", ALL_GNU_LANGUAGES)
 //   id objc_msgSend(id, SEL, ...)
 LIBBUILTIN(objc_msgSend, "GGH.",   "f",     "objc/message.h", OBJC_LANG)
 // long double objc_msgSend_fpret(id self, SEL op, ...) 
@@ -814,109 +821,321 @@ LIBBUILTIN(NSLog, "vG.", "fp:0:", "Foundation/NSObjCRuntime.h", OBJC_LANG)
 LIBBUILTIN(NSLogv, "vGa", "fP:0:", "Foundation/NSObjCRuntime.h", OBJC_LANG)
 
 // Builtin math library functions
-LIBBUILTIN(acos, "dd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(acosl, "LdLd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(acosf, "ff", "fe", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(atan2, "ddd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(atan2f, "fff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(atan2l, "LdLdLd", "fne", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(asin, "dd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(asinl, "LdLd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(asinf, "ff", "fe", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(abs, "ii", "fnc", "stdlib.h", ALL_LANGUAGES)
+LIBBUILTIN(labs, "LiLi", "fnc", "stdlib.h", ALL_LANGUAGES)
+LIBBUILTIN(llabs, "LLiLLi", "fnc", "stdlib.h", ALL_LANGUAGES)
 
-LIBBUILTIN(atan, "dd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(atanl, "LdLd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(atanf, "ff", "fe", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(copysign, "ddd", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(copysignf, "fff", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(copysignl, "LdLdLd", "fnc", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(atan2, "ddd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(atan2l, "LdLdLd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(atan2f, "fff", "fe", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(fabs, "dd", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(fabsf, "ff", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(fabsl, "LdLd", "fnc", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(ceil, "dd", "fc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(ceill, "LdLd", "fc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(ceilf, "ff", "fc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(fmod, "ddd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(fmodf, "fff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(fmodl, "LdLdLd", "fne", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(cimag, "dXd", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(cimagf, "fXf", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(cimagl, "LdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(frexp, "ddi*", "fn", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(frexpf, "ffi*", "fn", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(frexpl, "LdLdi*", "fn", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(creal, "dXd", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(crealf, "fXf", "fnc", "complex.h", ALL_LANGUAGES)
-LIBBUILTIN(creall, "LdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(ldexp, "ddi", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(ldexpf, "ffi", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(ldexpl, "LdLdi", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(modf, "ddd*", "fn", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(modff, "fff*", "fn", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(modfl, "LdLdLd*", "fn", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(nan,  "dcC*", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(nanf, "fcC*", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(nanl, "LdcC*", "fnc", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(pow, "ddd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(powf, "fff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(powl, "LdLdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(acos, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(acosf, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(acosl, "LdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(acosh, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(acoshf, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(acoshl, "LdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(asin, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(asinf, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(asinl, "LdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(asinh, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(asinhf, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(asinhl, "LdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(atan, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(atanf, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(atanl, "LdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(atanh, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(atanhf, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(atanhl, "LdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(cbrt, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(cbrtf, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(cbrtl, "LdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(ceil, "dd", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(ceilf, "ff", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(ceill, "LdLd", "fnc", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(cos, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(cosf, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(cosl, "LdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(cosh, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(coshf, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(coshl, "LdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(erf, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(erff, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(erfl, "LdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(erfc, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(erfcf, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(erfcl, "LdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(exp, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(expf, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(expl, "LdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(exp2, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(exp2f, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(exp2l, "LdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(expm1, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(expm1f, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(expm1l, "LdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(fdim, "ddd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(fdimf, "fff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(fdiml, "LdLdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(floor, "dd", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(floorf, "ff", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(floorl, "LdLd", "fnc", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(fma, "dddd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(fmaf, "ffff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(fmal, "LdLdLdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(fmax, "ddd", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(fmaxf, "fff", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(fmaxl, "LdLdLd", "fnc", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(fmin, "ddd", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(fminf, "fff", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(fminl, "LdLdLd", "fnc", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(hypot, "ddd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(hypotf, "fff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(hypotl, "LdLdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(ilogb, "id", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(ilogbf, "if", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(ilogbl, "iLd", "fne", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(copysign, "ddd", "fc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(copysignl, "LdLdLd", "fc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(copysignf, "fff", "fc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(lgamma, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(lgammaf, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(lgammal, "LdLd", "fne", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(cos, "dd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(cosl, "LdLd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(cosf, "ff", "fe", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(llrint, "LLid", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(llrintf, "LLif", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(llrintl, "LLiLd", "fne", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(exp, "dd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(expl, "LdLd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(expf, "ff", "fe", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(llround, "LLid", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(llroundf, "LLif", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(llroundl, "LLiLd", "fne", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(exp2, "dd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(exp2l, "LdLd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(exp2f, "ff", "fe", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(log, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(logf, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(logl, "LdLd", "fne", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(fabs, "dd", "fc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(fabsl, "LdLd", "fc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(fabsf, "ff", "fc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(log10, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(log10f, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(log10l, "LdLd", "fne", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(floor, "dd", "fc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(floorl, "LdLd", "fc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(floorf, "ff", "fc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(log1p, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(log1pf, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(log1pl, "LdLd", "fne", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(fma, "dddd", "fc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(fmal, "LdLdLdLd", "fc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(fmaf, "ffff", "fc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(log2, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(log2f, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(log2l, "LdLd", "fne", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(fmax, "ddd", "fc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(fmaxl, "LdLdLd", "fc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(fmaxf, "fff", "fc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(logb, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(logbf, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(logbl, "LdLd", "fne", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(fmin, "ddd", "fc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(fminl, "LdLdLd", "fc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(fminf, "fff", "fc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(lrint, "Lid", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(lrintf, "Lif", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(lrintl, "LiLd", "fne", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(log, "dd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(logl, "LdLd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(logf, "ff", "fe", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(lround, "Lid", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(lroundf, "Lif", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(lroundl, "LiLd", "fne", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(log2, "dd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(log2l, "LdLd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(log2f, "ff", "fe", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(nearbyint, "dd", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(nearbyintf, "ff", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(nearbyintl, "LdLd", "fnc", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(nearbyint, "dd", "fc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(nearbyintl, "LdLd", "fc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(nearbyintf, "ff", "fc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(nextafter, "ddd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(nextafterf, "fff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(nextafterl, "LdLdLd", "fne", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(pow, "ddd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(powl, "LdLdLd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(powf, "fff", "fe", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(nexttoward, "ddLd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(nexttowardf, "ffLd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(nexttowardl, "LdLdLd", "fne", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(rint, "dd", "fc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(rintl, "LdLd", "fc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(rintf, "ff", "fc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(remainder, "ddd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(remainderf, "fff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(remainderl, "LdLdLd", "fne", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(round, "dd", "fc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(roundl, "LdLd", "fc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(roundf, "ff", "fc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(rint, "dd", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(rintf, "ff", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(rintl, "LdLd", "fnc", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(sin, "dd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(sinl, "LdLd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(sinf, "ff", "fe", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(round, "dd", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(roundf, "ff", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(roundl, "LdLd", "fnc", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(sqrt, "dd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(sqrtl, "LdLd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(sqrtf, "ff", "fe", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(scalbln, "ddLi", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(scalblnf, "ffLi", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(scalblnl, "LdLdLi", "fne", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(tan, "dd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(tanl, "LdLd", "fe", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(tanf, "ff", "fe", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(scalbn, "ddi", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(scalbnf, "ffi", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(scalbnl, "LdLdi", "fne", "math.h", ALL_LANGUAGES)
 
-LIBBUILTIN(trunc, "dd", "fc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(truncl, "LdLd", "fc", "math.h", ALL_LANGUAGES)
-LIBBUILTIN(truncf, "ff", "fc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(sin, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(sinf, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(sinl, "LdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(sinh, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(sinhf, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(sinhl, "LdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(sqrt, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(sqrtf, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(sqrtl, "LdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(tan, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(tanf, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(tanl, "LdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(tanh, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(tanhf, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(tanhl, "LdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(tgamma, "dd", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(tgammaf, "ff", "fne", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(tgammal, "LdLd", "fne", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(trunc, "dd", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(truncf, "ff", "fnc", "math.h", ALL_LANGUAGES)
+LIBBUILTIN(truncl, "LdLd", "fnc", "math.h", ALL_LANGUAGES)
+
+LIBBUILTIN(cabs, "dXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cabsf, "fXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cabsl, "LdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
+LIBBUILTIN(cacos, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cacosf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cacosl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
+LIBBUILTIN(cacosh, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cacoshf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cacoshl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
+LIBBUILTIN(carg, "dXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cargf, "fXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cargl, "LdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
+LIBBUILTIN(casin, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(casinf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(casinl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
+LIBBUILTIN(casinh, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(casinhf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(casinhl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
+LIBBUILTIN(catan, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(catanf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(catanl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
+LIBBUILTIN(catanh, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(catanhf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(catanhl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
+LIBBUILTIN(ccos, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(ccosf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(ccosl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
+LIBBUILTIN(ccosh, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(ccoshf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(ccoshl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
+LIBBUILTIN(cexp, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cexpf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cexpl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
+LIBBUILTIN(cimag, "dXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cimagf, "fXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cimagl, "LdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
+LIBBUILTIN(conj, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(conjf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(conjl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
+LIBBUILTIN(clog, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(clogf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(clogl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
+LIBBUILTIN(cproj, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cprojf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cprojl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
+LIBBUILTIN(cpow, "XdXdXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cpowf, "XfXfXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(cpowl, "XLdXLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
+LIBBUILTIN(creal, "dXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(crealf, "fXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(creall, "LdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
+LIBBUILTIN(csin, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(csinf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(csinl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
+LIBBUILTIN(csinh, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(csinhf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(csinhl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
+LIBBUILTIN(csqrt, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(csqrtf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(csqrtl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
+LIBBUILTIN(ctan, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(ctanf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(ctanl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
+
+LIBBUILTIN(ctanh, "XdXd", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(ctanhf, "XfXf", "fnc", "complex.h", ALL_LANGUAGES)
+LIBBUILTIN(ctanhl, "XLdXLd", "fnc", "complex.h", ALL_LANGUAGES)
 
 // Blocks runtime Builtin math library functions
 LIBBUILTIN(_Block_object_assign, "vv*vC*iC", "f", "Blocks.h", ALL_LANGUAGES)
@@ -927,14 +1146,40 @@ LIBBUILTIN(_Block_object_dispose, "vvC*iC", "f", "Blocks.h", ALL_LANGUAGES)
 BUILTIN(__builtin_annotation, "v.", "tn")
 
 // Multiprecision Arithmetic Builtins.
+BUILTIN(__builtin_addcb, "UcUcCUcCUcCUc*", "n")
 BUILTIN(__builtin_addcs, "UsUsCUsCUsCUs*", "n")
 BUILTIN(__builtin_addc, "UiUiCUiCUiCUi*", "n")
 BUILTIN(__builtin_addcl, "ULiULiCULiCULiCULi*", "n")
 BUILTIN(__builtin_addcll, "ULLiULLiCULLiCULLiCULLi*", "n")
+BUILTIN(__builtin_subcb, "UcUcCUcCUcCUc*", "n")
 BUILTIN(__builtin_subcs, "UsUsCUsCUsCUs*", "n")
 BUILTIN(__builtin_subc, "UiUiCUiCUiCUi*", "n")
 BUILTIN(__builtin_subcl, "ULiULiCULiCULiCULi*", "n")
 BUILTIN(__builtin_subcll, "ULLiULLiCULLiCULLiCULLi*", "n")
 
+// Checked Arithmetic Builtins for Security.
+BUILTIN(__builtin_uadd_overflow, "bUiCUiCUi*", "n")
+BUILTIN(__builtin_uaddl_overflow, "bULiCULiCULi*", "n")
+BUILTIN(__builtin_uaddll_overflow, "bULLiCULLiCULLi*", "n")
+BUILTIN(__builtin_usub_overflow, "bUiCUiCUi*", "n")
+BUILTIN(__builtin_usubl_overflow, "bULiCULiCULi*", "n")
+BUILTIN(__builtin_usubll_overflow, "bULLiCULLiCULLi*", "n")
+BUILTIN(__builtin_umul_overflow, "bUiCUiCUi*", "n")
+BUILTIN(__builtin_umull_overflow, "bULiCULiCULi*", "n")
+BUILTIN(__builtin_umulll_overflow, "bULLiCULLiCULLi*", "n")
+BUILTIN(__builtin_sadd_overflow, "bSiCSiCSi*", "n")
+BUILTIN(__builtin_saddl_overflow, "bSLiCSLiCSLi*", "n")
+BUILTIN(__builtin_saddll_overflow, "bSLLiCSLLiCSLLi*", "n")
+BUILTIN(__builtin_ssub_overflow, "bSiCSiCSi*", "n")
+BUILTIN(__builtin_ssubl_overflow, "bSLiCSLiCSLi*", "n")
+BUILTIN(__builtin_ssubll_overflow, "bSLLiCSLLiCSLLi*", "n")
+BUILTIN(__builtin_smul_overflow, "bSiCSiCSi*", "n")
+BUILTIN(__builtin_smull_overflow, "bSLiCSLiCSLi*", "n")
+BUILTIN(__builtin_smulll_overflow, "bSLLiCSLLiCSLLi*", "n")
+
+// Clang builtins (not available in GCC).
+BUILTIN(__builtin_addressof, "v*v&", "nct")
+
 #undef BUILTIN
 #undef LIBBUILTIN
+#undef LANGBUILTIN
diff --git a/include/clang/Basic/Builtins.h b/include/clang/Basic/Builtins.h
index 3b88e1550cba..9756f21a1c48 100644
--- a/include/clang/Basic/Builtins.h
+++ b/include/clang/Basic/Builtins.h
@@ -31,10 +31,14 @@ namespace clang {
   class LangOptions;
   
   enum LanguageID {
-    C_LANG = 0x1,     // builtin for c only.
-    CXX_LANG = 0x2,   // builtin for cplusplus only.
-    OBJC_LANG = 0x4,  // builtin for objective-c and objective-c++
-    ALL_LANGUAGES = (C_LANG|CXX_LANG|OBJC_LANG) //builtin is for all languages.
+    GNU_LANG = 0x1,  // builtin requires GNU mode.
+    C_LANG = 0x2,    // builtin for c only.
+    CXX_LANG = 0x4,  // builtin for cplusplus only.
+    OBJC_LANG = 0x8, // builtin for objective-c and objective-c++
+    MS_LANG = 0x10,  // builtin requires MS mode.
+    ALL_LANGUAGES = C_LANG | CXX_LANG | OBJC_LANG, // builtin for all languages.
+    ALL_GNU_LANGUAGES = ALL_LANGUAGES | GNU_LANG,  // builtin requires GNU mode.
+    ALL_MS_LANGUAGES = ALL_LANGUAGES | MS_LANG     // builtin requires MS mode.
   };
   
 namespace Builtin {
@@ -73,9 +77,8 @@ public:
   /// such.
   void InitializeBuiltins(IdentifierTable &Table, const LangOptions& LangOpts);
 
-  /// \brief Popular the vector with the names of all of the builtins.
-  void GetBuiltinNames(SmallVectorImpl<const char *> &Names,
-                       bool NoBuiltins);
+  /// \brief Populate the vector with the names of all of the builtins.
+  void GetBuiltinNames(SmallVectorImpl<const char *> &Names);
 
   /// \brief Return the identifier name for the specified builtin,
   /// e.g. "__builtin_abs".
@@ -128,6 +131,13 @@ public:
     return strchr(GetRecord(ID).Attributes, 'f') != 0;
   }
 
+  /// \brief Determines whether this builtin is a predefined compiler-rt/libgcc
+  /// function, such as "__clear_cache", where we know the signature a
+  /// priori.
+  bool isPredefinedRuntimeFunction(unsigned ID) const {
+    return strchr(GetRecord(ID).Attributes, 'i') != 0;
+  }
+
   /// \brief Determines whether this builtin has custom typechecking.
   bool hasCustomTypechecking(unsigned ID) const {
     return strchr(GetRecord(ID).Attributes, 't') != 0;
@@ -163,6 +173,10 @@ public:
 
 private:
   const Info &GetRecord(unsigned ID) const;
+
+  /// \brief Is this builtin supported according to the given language options?
+  bool BuiltinIsSupported(const Builtin::Info &BuiltinInfo,
+                          const LangOptions &LangOpts);
 };
 
 }
diff --git a/include/clang/Basic/BuiltinsAArch64.def b/include/clang/Basic/BuiltinsAArch64.def
index 9e9f6d0875db..aafd202aae11 100644
--- a/include/clang/Basic/BuiltinsAArch64.def
+++ b/include/clang/Basic/BuiltinsAArch64.def
@@ -15,4 +15,11 @@
 // The format of this database matches clang/Basic/Builtins.def.
 
 // In libgcc
-BUILTIN(__clear_cache, "vv*v*", "")
+BUILTIN(__clear_cache, "vv*v*", "i")
+// NEON
+#define GET_NEON_AARCH64_BUILTINS
+#include "clang/Basic/arm_neon.inc"
+#undef GET_NEON_AARCH64_BUILTINS
+#undef GET_NEON_BUILTINS
+
+#undef BUILTIN
diff --git a/include/clang/Basic/BuiltinsARM.def b/include/clang/Basic/BuiltinsARM.def
index 888e529111ab..21bb892a8b9b 100644
--- a/include/clang/Basic/BuiltinsARM.def
+++ b/include/clang/Basic/BuiltinsARM.def
@@ -15,7 +15,7 @@
 // The format of this database matches clang/Basic/Builtins.def.
 
 // In libgcc
-BUILTIN(__clear_cache, "v.", "")
+BUILTIN(__clear_cache, "vv*v*", "i")
 BUILTIN(__builtin_thread_pointer, "v*", "")
 
 // Saturating arithmetic
@@ -24,10 +24,14 @@ BUILTIN(__builtin_arm_qsub, "iii", "nc")
 BUILTIN(__builtin_arm_ssat, "iiUi", "nc")
 BUILTIN(__builtin_arm_usat, "UiUiUi", "nc")
 
-// Store and load exclusive doubleword
+// Store and load exclusive
 BUILTIN(__builtin_arm_ldrexd, "LLUiv*", "")
 BUILTIN(__builtin_arm_strexd, "iLLUiv*", "")
 
+BUILTIN(__builtin_arm_ldrex, "v.", "t")
+BUILTIN(__builtin_arm_strex, "i.", "t")
+BUILTIN(__builtin_arm_clrex, "v", "")
+
 // VFP
 BUILTIN(__builtin_arm_get_fpscr, "Ui", "nc")
 BUILTIN(__builtin_arm_set_fpscr, "vUi", "nc")
@@ -44,6 +48,23 @@ BUILTIN(__builtin_arm_cdp2, "vUiUiUiUiUiUi", "")
 BUILTIN(__builtin_arm_mcrr, "vUiUiUiUiUi", "")
 BUILTIN(__builtin_arm_mcrr2, "vUiUiUiUiUi", "")
 
+// CRC32
+BUILTIN(__builtin_arm_crc32b, "UiUiUc", "nc")
+BUILTIN(__builtin_arm_crc32cb, "UiUiUc", "nc")
+BUILTIN(__builtin_arm_crc32h, "UiUiUs", "nc")
+BUILTIN(__builtin_arm_crc32ch, "UiUiUs", "nc")
+BUILTIN(__builtin_arm_crc32w, "UiUiUi", "nc")
+BUILTIN(__builtin_arm_crc32cw, "UiUiUi", "nc")
+BUILTIN(__builtin_arm_crc32d, "UiUiLLUi", "nc")
+BUILTIN(__builtin_arm_crc32cd, "UiUiLLUi", "nc")
+
+// HINT
+BUILTIN(__builtin_arm_sevl, "v", "")
+
+// Data barrier
+BUILTIN(__builtin_arm_dmb, "vUi", "nc")
+BUILTIN(__builtin_arm_dsb, "vUi", "nc")
+
 // NEON
 #define GET_NEON_BUILTINS
 #include "clang/Basic/arm_neon.inc"
diff --git a/include/clang/Basic/BuiltinsMips.def b/include/clang/Basic/BuiltinsMips.def
index 43fb90756efb..e435d52ed4f9 100644
--- a/include/clang/Basic/BuiltinsMips.def
+++ b/include/clang/Basic/BuiltinsMips.def
@@ -185,4 +185,716 @@ BUILTIN(__builtin_mips_subu_s_ph, "V2sV2sV2s", "n")
 BUILTIN(__builtin_mips_subuh_qb, "V4ScV4ScV4Sc", "nc")
 BUILTIN(__builtin_mips_subuh_r_qb, "V4ScV4ScV4Sc", "nc")
 
+// MIPS MSA
+
+BUILTIN(__builtin_msa_add_a_b, "V16ScV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_add_a_h, "V8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_add_a_w, "V4SiV4SiV4Si", "nc")
+BUILTIN(__builtin_msa_add_a_d, "V2SLLiV2SLLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_adds_a_b, "V16ScV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_adds_a_h, "V8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_adds_a_w, "V4SiV4SiV4Si", "nc")
+BUILTIN(__builtin_msa_adds_a_d, "V2SLLiV2SLLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_adds_s_b, "V16ScV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_adds_s_h, "V8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_adds_s_w, "V4SiV4SiV4Si", "nc")
+BUILTIN(__builtin_msa_adds_s_d, "V2SLLiV2SLLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_adds_u_b, "V16UcV16UcV16Uc", "nc")
+BUILTIN(__builtin_msa_adds_u_h, "V8UsV8UsV8Us", "nc")
+BUILTIN(__builtin_msa_adds_u_w, "V4UiV4UiV4Ui", "nc")
+BUILTIN(__builtin_msa_adds_u_d, "V2ULLiV2ULLiV2ULLi", "nc")
+
+BUILTIN(__builtin_msa_addv_b, "V16cV16cV16c", "nc")
+BUILTIN(__builtin_msa_addv_h, "V8sV8sV8s", "nc")
+BUILTIN(__builtin_msa_addv_w, "V4iV4iV4i", "nc")
+BUILTIN(__builtin_msa_addv_d, "V2LLiV2LLiV2LLi", "nc")
+
+BUILTIN(__builtin_msa_addvi_b, "V16cV16cIUi", "nc")
+BUILTIN(__builtin_msa_addvi_h, "V8sV8sIUi", "nc")
+BUILTIN(__builtin_msa_addvi_w, "V4iV4iIUi", "nc")
+BUILTIN(__builtin_msa_addvi_d, "V2LLiV2LLiIUi", "nc")
+
+BUILTIN(__builtin_msa_and_v, "V16UcV16UcV16Uc", "nc")
+
+BUILTIN(__builtin_msa_andi_b, "V16UcV16UcIUi", "nc")
+
+BUILTIN(__builtin_msa_asub_s_b, "V16ScV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_asub_s_h, "V8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_asub_s_w, "V4SiV4SiV4Si", "nc")
+BUILTIN(__builtin_msa_asub_s_d, "V2SLLiV2SLLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_asub_u_b, "V16UcV16UcV16Uc", "nc")
+BUILTIN(__builtin_msa_asub_u_h, "V8UsV8UsV8Us", "nc")
+BUILTIN(__builtin_msa_asub_u_w, "V4UiV4UiV4Ui", "nc")
+BUILTIN(__builtin_msa_asub_u_d, "V2ULLiV2ULLiV2ULLi", "nc")
+
+BUILTIN(__builtin_msa_ave_s_b, "V16ScV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_ave_s_h, "V8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_ave_s_w, "V4SiV4SiV4Si", "nc")
+BUILTIN(__builtin_msa_ave_s_d, "V2SLLiV2SLLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_ave_u_b, "V16UcV16UcV16Uc", "nc")
+BUILTIN(__builtin_msa_ave_u_h, "V8UsV8UsV8Us", "nc")
+BUILTIN(__builtin_msa_ave_u_w, "V4UiV4UiV4Ui", "nc")
+BUILTIN(__builtin_msa_ave_u_d, "V2ULLiV2ULLiV2ULLi", "nc")
+
+BUILTIN(__builtin_msa_aver_s_b, "V16ScV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_aver_s_h, "V8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_aver_s_w, "V4SiV4SiV4Si", "nc")
+BUILTIN(__builtin_msa_aver_s_d, "V2SLLiV2SLLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_aver_u_b, "V16UcV16UcV16Uc", "nc")
+BUILTIN(__builtin_msa_aver_u_h, "V8UsV8UsV8Us", "nc")
+BUILTIN(__builtin_msa_aver_u_w, "V4UiV4UiV4Ui", "nc")
+BUILTIN(__builtin_msa_aver_u_d, "V2ULLiV2ULLiV2ULLi", "nc")
+
+BUILTIN(__builtin_msa_bclr_b, "V16UcV16UcV16Uc", "nc")
+BUILTIN(__builtin_msa_bclr_h, "V8UsV8UsV8Us", "nc")
+BUILTIN(__builtin_msa_bclr_w, "V4UiV4UiV4Ui", "nc")
+BUILTIN(__builtin_msa_bclr_d, "V2ULLiV2ULLiV2ULLi", "nc")
+
+BUILTIN(__builtin_msa_bclri_b, "V16UcV16UcIUi", "nc")
+BUILTIN(__builtin_msa_bclri_h, "V8UsV8UsIUi", "nc")
+BUILTIN(__builtin_msa_bclri_w, "V4UiV4UiIUi", "nc")
+BUILTIN(__builtin_msa_bclri_d, "V2ULLiV2ULLiIUi", "nc")
+
+BUILTIN(__builtin_msa_binsl_b, "V16UcV16UcV16UcV16Uc", "nc")
+BUILTIN(__builtin_msa_binsl_h, "V8UsV8UsV8UsV8Us", "nc")
+BUILTIN(__builtin_msa_binsl_w, "V4UiV4UiV4UiV4Ui", "nc")
+BUILTIN(__builtin_msa_binsl_d, "V2ULLiV2ULLiV2ULLiV2ULLi", "nc")
+
+BUILTIN(__builtin_msa_binsli_b, "V16UcV16UcV16UcIUi", "nc")
+BUILTIN(__builtin_msa_binsli_h, "V8UsV8UsV8UsIUi", "nc")
+BUILTIN(__builtin_msa_binsli_w, "V4UiV4UiV4UiIUi", "nc")
+BUILTIN(__builtin_msa_binsli_d, "V2ULLiV2ULLiV2ULLiIUi", "nc")
+
+BUILTIN(__builtin_msa_binsr_b, "V16UcV16UcV16UcV16Uc", "nc")
+BUILTIN(__builtin_msa_binsr_h, "V8UsV8UsV8UsV8Us", "nc")
+BUILTIN(__builtin_msa_binsr_w, "V4UiV4UiV4UiV4Ui", "nc")
+BUILTIN(__builtin_msa_binsr_d, "V2ULLiV2ULLiV2ULLiV2ULLi", "nc")
+
+BUILTIN(__builtin_msa_binsri_b, "V16UcV16UcV16UcIUi", "nc")
+BUILTIN(__builtin_msa_binsri_h, "V8UsV8UsV8UsIUi", "nc")
+BUILTIN(__builtin_msa_binsri_w, "V4UiV4UiV4UiIUi", "nc")
+BUILTIN(__builtin_msa_binsri_d, "V2ULLiV2ULLiV2ULLiIUi", "nc")
+
+BUILTIN(__builtin_msa_bmnz_v, "V16UcV16UcV16UcV16Uc", "nc")
+
+BUILTIN(__builtin_msa_bmnzi_b, "V16UcV16UcV16UcIUi", "nc")
+
+BUILTIN(__builtin_msa_bmz_v, "V16UcV16UcV16UcV16Uc", "nc")
+
+BUILTIN(__builtin_msa_bmzi_b, "V16UcV16UcV16UcIUi", "nc")
+
+BUILTIN(__builtin_msa_bneg_b, "V16UcV16UcV16Uc", "nc")
+BUILTIN(__builtin_msa_bneg_h, "V8UsV8UsV8Us", "nc")
+BUILTIN(__builtin_msa_bneg_w, "V4UiV4UiV4Ui", "nc")
+BUILTIN(__builtin_msa_bneg_d, "V2ULLiV2ULLiV2ULLi", "nc")
+
+BUILTIN(__builtin_msa_bnegi_b, "V16UcV16UcIUi", "nc")
+BUILTIN(__builtin_msa_bnegi_h, "V8UsV8UsIUi", "nc")
+BUILTIN(__builtin_msa_bnegi_w, "V4UiV4UiIUi", "nc")
+BUILTIN(__builtin_msa_bnegi_d, "V2ULLiV2ULLiIUi", "nc")
+
+BUILTIN(__builtin_msa_bnz_b, "iV16Uc", "nc")
+BUILTIN(__builtin_msa_bnz_h, "iV8Us", "nc")
+BUILTIN(__builtin_msa_bnz_w, "iV4Ui", "nc")
+BUILTIN(__builtin_msa_bnz_d, "iV2ULLi", "nc")
+
+BUILTIN(__builtin_msa_bnz_v, "iV16Uc", "nc")
+
+BUILTIN(__builtin_msa_bsel_v, "V16UcV16UcV16UcV16Uc", "nc")
+
+BUILTIN(__builtin_msa_bseli_b, "V16UcV16UcV16UcIUi", "nc")
+
+BUILTIN(__builtin_msa_bset_b, "V16UcV16UcV16Uc", "nc")
+BUILTIN(__builtin_msa_bset_h, "V8UsV8UsV8Us", "nc")
+BUILTIN(__builtin_msa_bset_w, "V4UiV4UiV4Ui", "nc")
+BUILTIN(__builtin_msa_bset_d, "V2ULLiV2ULLiV2ULLi", "nc")
+
+BUILTIN(__builtin_msa_bseti_b, "V16UcV16UcIUi", "nc")
+BUILTIN(__builtin_msa_bseti_h, "V8UsV8UsIUi", "nc")
+BUILTIN(__builtin_msa_bseti_w, "V4UiV4UiIUi", "nc")
+BUILTIN(__builtin_msa_bseti_d, "V2ULLiV2ULLiIUi", "nc")
+
+BUILTIN(__builtin_msa_bz_b, "iV16Uc", "nc")
+BUILTIN(__builtin_msa_bz_h, "iV8Us", "nc")
+BUILTIN(__builtin_msa_bz_w, "iV4Ui", "nc")
+BUILTIN(__builtin_msa_bz_d, "iV2ULLi", "nc")
+
+BUILTIN(__builtin_msa_bz_v, "iV16Uc", "nc")
+
+BUILTIN(__builtin_msa_ceq_b, "V16ScV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_ceq_h, "V8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_ceq_w, "V4SiV4SiV4Si", "nc")
+BUILTIN(__builtin_msa_ceq_d, "V2SLLiV2SLLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_ceqi_b, "V16ScV16ScISi", "nc")
+BUILTIN(__builtin_msa_ceqi_h, "V8SsV8SsISi", "nc")
+BUILTIN(__builtin_msa_ceqi_w, "V4SiV4SiISi", "nc")
+BUILTIN(__builtin_msa_ceqi_d, "V2SLLiV2SLLiISi", "nc")
+
+BUILTIN(__builtin_msa_cfcmsa, "iIi", "n")
+
+BUILTIN(__builtin_msa_cle_s_b, "V16ScV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_cle_s_h, "V8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_cle_s_w, "V4SiV4SiV4Si", "nc")
+BUILTIN(__builtin_msa_cle_s_d, "V2SLLiV2SLLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_cle_u_b, "V16ScV16UcV16Uc", "nc")
+BUILTIN(__builtin_msa_cle_u_h, "V8SsV8UsV8Us", "nc")
+BUILTIN(__builtin_msa_cle_u_w, "V4SiV4UiV4Ui", "nc")
+BUILTIN(__builtin_msa_cle_u_d, "V2SLLiV2ULLiV2ULLi", "nc")
+
+BUILTIN(__builtin_msa_clei_s_b, "V16ScV16ScISi", "nc")
+BUILTIN(__builtin_msa_clei_s_h, "V8SsV8SsISi", "nc")
+BUILTIN(__builtin_msa_clei_s_w, "V4SiV4SiISi", "nc")
+BUILTIN(__builtin_msa_clei_s_d, "V2SLLiV2SLLiISi", "nc")
+
+BUILTIN(__builtin_msa_clei_u_b, "V16ScV16UcIUi", "nc")
+BUILTIN(__builtin_msa_clei_u_h, "V8SsV8UsIUi", "nc")
+BUILTIN(__builtin_msa_clei_u_w, "V4SiV4UiIUi", "nc")
+BUILTIN(__builtin_msa_clei_u_d, "V2SLLiV2ULLiIUi", "nc")
+
+BUILTIN(__builtin_msa_clt_s_b, "V16ScV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_clt_s_h, "V8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_clt_s_w, "V4SiV4SiV4Si", "nc")
+BUILTIN(__builtin_msa_clt_s_d, "V2SLLiV2SLLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_clt_u_b, "V16ScV16UcV16Uc", "nc")
+BUILTIN(__builtin_msa_clt_u_h, "V8SsV8UsV8Us", "nc")
+BUILTIN(__builtin_msa_clt_u_w, "V4SiV4UiV4Ui", "nc")
+BUILTIN(__builtin_msa_clt_u_d, "V2SLLiV2ULLiV2ULLi", "nc")
+
+BUILTIN(__builtin_msa_clti_s_b, "V16ScV16ScISi", "nc")
+BUILTIN(__builtin_msa_clti_s_h, "V8SsV8SsISi", "nc")
+BUILTIN(__builtin_msa_clti_s_w, "V4SiV4SiISi", "nc")
+BUILTIN(__builtin_msa_clti_s_d, "V2SLLiV2SLLiISi", "nc")
+
+BUILTIN(__builtin_msa_clti_u_b, "V16ScV16UcIUi", "nc")
+BUILTIN(__builtin_msa_clti_u_h, "V8SsV8UsIUi", "nc")
+BUILTIN(__builtin_msa_clti_u_w, "V4SiV4UiIUi", "nc")
+BUILTIN(__builtin_msa_clti_u_d, "V2SLLiV2ULLiIUi", "nc")
+
+BUILTIN(__builtin_msa_copy_s_b, "iV16ScIUi", "nc")
+BUILTIN(__builtin_msa_copy_s_h, "iV8SsIUi", "nc")
+BUILTIN(__builtin_msa_copy_s_w, "iV4SiIUi", "nc")
+BUILTIN(__builtin_msa_copy_s_d, "LLiV2SLLiIUi", "nc")
+
+BUILTIN(__builtin_msa_copy_u_b, "iV16UcIUi", "nc")
+BUILTIN(__builtin_msa_copy_u_h, "iV8UsIUi", "nc")
+BUILTIN(__builtin_msa_copy_u_w, "iV4UiIUi", "nc")
+BUILTIN(__builtin_msa_copy_u_d, "LLiV2ULLiIUi", "nc")
+
+BUILTIN(__builtin_msa_ctcmsa, "vIii", "n")
+
+BUILTIN(__builtin_msa_div_s_b, "V16ScV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_div_s_h, "V8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_div_s_w, "V4SiV4SiV4Si", "nc")
+BUILTIN(__builtin_msa_div_s_d, "V2SLLiV2SLLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_div_u_b, "V16UcV16UcV16Uc", "nc")
+BUILTIN(__builtin_msa_div_u_h, "V8UsV8UsV8Us", "nc")
+BUILTIN(__builtin_msa_div_u_w, "V4UiV4UiV4Ui", "nc")
+BUILTIN(__builtin_msa_div_u_d, "V2ULLiV2ULLiV2ULLi", "nc")
+
+BUILTIN(__builtin_msa_dotp_s_h, "V8SsV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_dotp_s_w, "V4SiV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_dotp_s_d, "V2SLLiV4SiV4Si", "nc")
+
+BUILTIN(__builtin_msa_dotp_u_h, "V8UsV16UcV16Uc", "nc")
+BUILTIN(__builtin_msa_dotp_u_w, "V4UiV8UsV8Us", "nc")
+BUILTIN(__builtin_msa_dotp_u_d, "V2ULLiV4UiV4Ui", "nc")
+
+BUILTIN(__builtin_msa_dpadd_s_h, "V8SsV8SsV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_dpadd_s_w, "V4SiV4SiV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_dpadd_s_d, "V2SLLiV2SLLiV4SiV4Si", "nc")
+
+BUILTIN(__builtin_msa_dpadd_u_h, "V8UsV8UsV16UcV16Uc", "nc")
+BUILTIN(__builtin_msa_dpadd_u_w, "V4UiV4UiV8UsV8Us", "nc")
+BUILTIN(__builtin_msa_dpadd_u_d, "V2ULLiV2ULLiV4UiV4Ui", "nc")
+
+BUILTIN(__builtin_msa_dpsub_s_h, "V8SsV8SsV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_dpsub_s_w, "V4SiV4SiV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_dpsub_s_d, "V2SLLiV2SLLiV4SiV4Si", "nc")
+
+BUILTIN(__builtin_msa_dpsub_u_h, "V8UsV8UsV16UcV16Uc", "nc")
+BUILTIN(__builtin_msa_dpsub_u_w, "V4UiV4UiV8UsV8Us", "nc")
+BUILTIN(__builtin_msa_dpsub_u_d, "V2ULLiV2ULLiV4UiV4Ui", "nc")
+
+BUILTIN(__builtin_msa_fadd_w, "V4fV4fV4f", "nc")
+BUILTIN(__builtin_msa_fadd_d, "V2dV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fcaf_w, "V4iV4fV4f", "nc")
+BUILTIN(__builtin_msa_fcaf_d, "V2LLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fceq_w, "V4iV4fV4f", "nc")
+BUILTIN(__builtin_msa_fceq_d, "V2LLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fclass_w, "V4iV4f", "nc")
+BUILTIN(__builtin_msa_fclass_d, "V2LLiV2d", "nc")
+
+BUILTIN(__builtin_msa_fcle_w, "V4iV4fV4f", "nc")
+BUILTIN(__builtin_msa_fcle_d, "V2LLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fclt_w, "V4iV4fV4f", "nc")
+BUILTIN(__builtin_msa_fclt_d, "V2LLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fcne_w, "V4iV4fV4f", "nc")
+BUILTIN(__builtin_msa_fcne_d, "V2LLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fcor_w, "V4iV4fV4f", "nc")
+BUILTIN(__builtin_msa_fcor_d, "V2LLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fcueq_w, "V4iV4fV4f", "nc")
+BUILTIN(__builtin_msa_fcueq_d, "V2LLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fcule_w, "V4iV4fV4f", "nc")
+BUILTIN(__builtin_msa_fcule_d, "V2LLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fcult_w, "V4iV4fV4f", "nc")
+BUILTIN(__builtin_msa_fcult_d, "V2LLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fcun_w, "V4iV4fV4f", "nc")
+BUILTIN(__builtin_msa_fcun_d, "V2LLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fcune_w, "V4iV4fV4f", "nc")
+BUILTIN(__builtin_msa_fcune_d, "V2LLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fdiv_w, "V4fV4fV4f", "nc")
+BUILTIN(__builtin_msa_fdiv_d, "V2dV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fexdo_h, "V8hV4fV4f", "nc")
+BUILTIN(__builtin_msa_fexdo_w, "V4fV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fexp2_w, "V4fV4fV4i", "nc")
+BUILTIN(__builtin_msa_fexp2_d, "V2dV2dV2LLi", "nc")
+
+BUILTIN(__builtin_msa_fexupl_w, "V4fV8h", "nc")
+BUILTIN(__builtin_msa_fexupl_d, "V2dV4f", "nc")
+
+BUILTIN(__builtin_msa_fexupr_w, "V4fV8h", "nc")
+BUILTIN(__builtin_msa_fexupr_d, "V2dV4f", "nc")
+
+BUILTIN(__builtin_msa_ffint_s_w, "V4fV4Si", "nc")
+BUILTIN(__builtin_msa_ffint_s_d, "V2dV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_ffint_u_w, "V4fV4Ui", "nc")
+BUILTIN(__builtin_msa_ffint_u_d, "V2dV2ULLi", "nc")
+
+// ffql uses integers since long _Fract is not implemented
+BUILTIN(__builtin_msa_ffql_w, "V4fV8Ss", "nc")
+BUILTIN(__builtin_msa_ffql_d, "V2dV4Si", "nc")
+
+// ffqr uses integers since long _Fract is not implemented
+BUILTIN(__builtin_msa_ffqr_w, "V4fV8Ss", "nc")
+BUILTIN(__builtin_msa_ffqr_d, "V2dV4Si", "nc")
+
+BUILTIN(__builtin_msa_fill_b, "V16Sci", "nc")
+BUILTIN(__builtin_msa_fill_h, "V8Ssi", "nc")
+BUILTIN(__builtin_msa_fill_w, "V4Sii", "nc")
+BUILTIN(__builtin_msa_fill_d, "V2SLLiLLi", "nc")
+
+BUILTIN(__builtin_msa_flog2_w, "V4fV4f", "nc")
+BUILTIN(__builtin_msa_flog2_d, "V2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fmadd_w, "V4fV4fV4fV4f", "nc")
+BUILTIN(__builtin_msa_fmadd_d, "V2dV2dV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fmax_w, "V4fV4fV4f", "nc")
+BUILTIN(__builtin_msa_fmax_d, "V2dV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fmax_a_w, "V4fV4fV4f", "nc")
+BUILTIN(__builtin_msa_fmax_a_d, "V2dV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fmin_w, "V4fV4fV4f", "nc")
+BUILTIN(__builtin_msa_fmin_d, "V2dV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fmin_a_w, "V4fV4fV4f", "nc")
+BUILTIN(__builtin_msa_fmin_a_d, "V2dV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fmsub_w, "V4fV4fV4fV4f", "nc")
+BUILTIN(__builtin_msa_fmsub_d, "V2dV2dV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fmul_w, "V4fV4fV4f", "nc")
+BUILTIN(__builtin_msa_fmul_d, "V2dV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_frint_w, "V4fV4f", "nc")
+BUILTIN(__builtin_msa_frint_d, "V2dV2d", "nc")
+
+BUILTIN(__builtin_msa_frcp_w, "V4fV4f", "nc")
+BUILTIN(__builtin_msa_frcp_d, "V2dV2d", "nc")
+
+BUILTIN(__builtin_msa_frsqrt_w, "V4fV4f", "nc")
+BUILTIN(__builtin_msa_frsqrt_d, "V2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fsaf_w, "V4iV4fV4f", "nc")
+BUILTIN(__builtin_msa_fsaf_d, "V2LLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fseq_w, "V4iV4fV4f", "nc")
+BUILTIN(__builtin_msa_fseq_d, "V2LLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fsle_w, "V4iV4fV4f", "nc")
+BUILTIN(__builtin_msa_fsle_d, "V2LLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fslt_w, "V4iV4fV4f", "nc")
+BUILTIN(__builtin_msa_fslt_d, "V2LLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fsne_w, "V4iV4fV4f", "nc")
+BUILTIN(__builtin_msa_fsne_d, "V2LLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fsor_w, "V4iV4fV4f", "nc")
+BUILTIN(__builtin_msa_fsor_d, "V2LLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fsqrt_w, "V4fV4f", "nc")
+BUILTIN(__builtin_msa_fsqrt_d, "V2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fsub_w, "V4fV4fV4f", "nc")
+BUILTIN(__builtin_msa_fsub_d, "V2dV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fsueq_w, "V4iV4fV4f", "nc")
+BUILTIN(__builtin_msa_fsueq_d, "V2LLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fsule_w, "V4iV4fV4f", "nc")
+BUILTIN(__builtin_msa_fsule_d, "V2LLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fsult_w, "V4iV4fV4f", "nc")
+BUILTIN(__builtin_msa_fsult_d, "V2LLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fsun_w, "V4iV4fV4f", "nc")
+BUILTIN(__builtin_msa_fsun_d, "V2LLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_fsune_w, "V4iV4fV4f", "nc")
+BUILTIN(__builtin_msa_fsune_d, "V2LLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_ftint_s_w, "V4SiV4f", "nc")
+BUILTIN(__builtin_msa_ftint_s_d, "V2SLLiV2d", "nc")
+
+BUILTIN(__builtin_msa_ftint_u_w, "V4UiV4f", "nc")
+BUILTIN(__builtin_msa_ftint_u_d, "V2ULLiV2d", "nc")
+
+BUILTIN(__builtin_msa_ftq_h, "V4UiV4fV4f", "nc")
+BUILTIN(__builtin_msa_ftq_w, "V2ULLiV2dV2d", "nc")
+
+BUILTIN(__builtin_msa_ftrunc_s_w, "V4SiV4f", "nc")
+BUILTIN(__builtin_msa_ftrunc_s_d, "V2SLLiV2d", "nc")
+
+BUILTIN(__builtin_msa_ftrunc_u_w, "V4UiV4f", "nc")
+BUILTIN(__builtin_msa_ftrunc_u_d, "V2ULLiV2d", "nc")
+
+BUILTIN(__builtin_msa_hadd_s_h, "V8SsV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_hadd_s_w, "V4SiV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_hadd_s_d, "V2SLLiV4SiV4Si", "nc")
+
+BUILTIN(__builtin_msa_hadd_u_h, "V8UsV16UcV16Uc", "nc")
+BUILTIN(__builtin_msa_hadd_u_w, "V4UiV8UsV8Us", "nc")
+BUILTIN(__builtin_msa_hadd_u_d, "V2ULLiV4UiV4Ui", "nc")
+
+BUILTIN(__builtin_msa_hsub_s_h, "V8SsV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_hsub_s_w, "V4SiV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_hsub_s_d, "V2SLLiV4SiV4Si", "nc")
+
+BUILTIN(__builtin_msa_hsub_u_h, "V8UsV16UcV16Uc", "nc")
+BUILTIN(__builtin_msa_hsub_u_w, "V4UiV8UsV8Us", "nc")
+BUILTIN(__builtin_msa_hsub_u_d, "V2ULLiV4UiV4Ui", "nc")
+
+BUILTIN(__builtin_msa_ilvev_b, "V16cV16cV16c", "nc")
+BUILTIN(__builtin_msa_ilvev_h, "V8sV8sV8s", "nc")
+BUILTIN(__builtin_msa_ilvev_w, "V4iV4iV4i", "nc")
+BUILTIN(__builtin_msa_ilvev_d, "V2LLiV2LLiV2LLi", "nc")
+
+BUILTIN(__builtin_msa_ilvl_b, "V16cV16cV16c", "nc")
+BUILTIN(__builtin_msa_ilvl_h, "V8sV8sV8s", "nc")
+BUILTIN(__builtin_msa_ilvl_w, "V4iV4iV4i", "nc")
+BUILTIN(__builtin_msa_ilvl_d, "V2LLiV2LLiV2LLi", "nc")
+
+BUILTIN(__builtin_msa_ilvod_b, "V16cV16cV16c", "nc")
+BUILTIN(__builtin_msa_ilvod_h, "V8sV8sV8s", "nc")
+BUILTIN(__builtin_msa_ilvod_w, "V4iV4iV4i", "nc")
+BUILTIN(__builtin_msa_ilvod_d, "V2LLiV2LLiV2LLi", "nc")
+
+BUILTIN(__builtin_msa_ilvr_b, "V16cV16cV16c", "nc")
+BUILTIN(__builtin_msa_ilvr_h, "V8sV8sV8s", "nc")
+BUILTIN(__builtin_msa_ilvr_w, "V4iV4iV4i", "nc")
+BUILTIN(__builtin_msa_ilvr_d, "V2LLiV2LLiV2LLi", "nc")
+
+BUILTIN(__builtin_msa_insert_b, "V16ScV16ScIUii", "nc")
+BUILTIN(__builtin_msa_insert_h, "V8SsV8SsIUii", "nc")
+BUILTIN(__builtin_msa_insert_w, "V4SiV4SiIUii", "nc")
+BUILTIN(__builtin_msa_insert_d, "V2SLLiV2SLLiIUiLLi", "nc")
+
+BUILTIN(__builtin_msa_insve_b, "V16ScV16ScIUiV16Sc", "nc")
+BUILTIN(__builtin_msa_insve_h, "V8SsV8SsIUiV8Ss", "nc")
+BUILTIN(__builtin_msa_insve_w, "V4SiV4SiIUiV4Si", "nc")
+BUILTIN(__builtin_msa_insve_d, "V2SLLiV2SLLiIUiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_ld_b, "V16Scv*Ii", "nc")
+BUILTIN(__builtin_msa_ld_h, "V8Ssv*Ii", "nc")
+BUILTIN(__builtin_msa_ld_w, "V4Siv*Ii", "nc")
+BUILTIN(__builtin_msa_ld_d, "V2SLLiv*Ii", "nc")
+
+BUILTIN(__builtin_msa_ldi_b, "V16cIi", "nc")
+BUILTIN(__builtin_msa_ldi_h, "V8sIi", "nc")
+BUILTIN(__builtin_msa_ldi_w, "V4iIi", "nc")
+BUILTIN(__builtin_msa_ldi_d, "V2LLiIi", "nc")
+
+BUILTIN(__builtin_msa_madd_q_h, "V8SsV8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_madd_q_w, "V4SiV4SiV4SiV4Si", "nc")
+
+BUILTIN(__builtin_msa_maddr_q_h, "V8SsV8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_maddr_q_w, "V4SiV4SiV4SiV4Si", "nc")
+
+BUILTIN(__builtin_msa_maddv_b, "V16ScV16ScV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_maddv_h, "V8SsV8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_maddv_w, "V4SiV4SiV4SiV4Si", "nc")
+BUILTIN(__builtin_msa_maddv_d, "V2SLLiV2SLLiV2SLLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_max_a_b, "V16ScV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_max_a_h, "V8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_max_a_w, "V4SiV4SiV4Si", "nc")
+BUILTIN(__builtin_msa_max_a_d, "V2SLLiV2SLLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_max_s_b, "V16ScV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_max_s_h, "V8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_max_s_w, "V4SiV4SiV4Si", "nc")
+BUILTIN(__builtin_msa_max_s_d, "V2SLLiV2SLLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_max_u_b, "V16UcV16UcV16Uc", "nc")
+BUILTIN(__builtin_msa_max_u_h, "V8UsV8UsV8Us", "nc")
+BUILTIN(__builtin_msa_max_u_w, "V4UiV4UiV4Ui", "nc")
+BUILTIN(__builtin_msa_max_u_d, "V2ULLiV2ULLiV2ULLi", "nc")
+
+BUILTIN(__builtin_msa_maxi_s_b, "V16ScV16ScIi", "nc")
+BUILTIN(__builtin_msa_maxi_s_h, "V8SsV8SsIi", "nc")
+BUILTIN(__builtin_msa_maxi_s_w, "V4SiV4SiIi", "nc")
+BUILTIN(__builtin_msa_maxi_s_d, "V2SLLiV2SLLiIi", "nc")
+
+BUILTIN(__builtin_msa_maxi_u_b, "V16UcV16UcIi", "nc")
+BUILTIN(__builtin_msa_maxi_u_h, "V8UsV8UsIi", "nc")
+BUILTIN(__builtin_msa_maxi_u_w, "V4UiV4UiIi", "nc")
+BUILTIN(__builtin_msa_maxi_u_d, "V2ULLiV2ULLiIi", "nc")
+
+BUILTIN(__builtin_msa_min_a_b, "V16ScV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_min_a_h, "V8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_min_a_w, "V4SiV4SiV4Si", "nc")
+BUILTIN(__builtin_msa_min_a_d, "V2SLLiV2SLLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_min_s_b, "V16ScV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_min_s_h, "V8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_min_s_w, "V4SiV4SiV4Si", "nc")
+BUILTIN(__builtin_msa_min_s_d, "V2SLLiV2SLLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_min_u_b, "V16UcV16UcV16Uc", "nc")
+BUILTIN(__builtin_msa_min_u_h, "V8UsV8UsV8Us", "nc")
+BUILTIN(__builtin_msa_min_u_w, "V4UiV4UiV4Ui", "nc")
+BUILTIN(__builtin_msa_min_u_d, "V2ULLiV2ULLiV2ULLi", "nc")
+
+BUILTIN(__builtin_msa_mini_s_b, "V16ScV16ScIi", "nc")
+BUILTIN(__builtin_msa_mini_s_h, "V8SsV8SsIi", "nc")
+BUILTIN(__builtin_msa_mini_s_w, "V4SiV4SiIi", "nc")
+BUILTIN(__builtin_msa_mini_s_d, "V2SLLiV2SLLiIi", "nc")
+
+BUILTIN(__builtin_msa_mini_u_b, "V16UcV16UcIi", "nc")
+BUILTIN(__builtin_msa_mini_u_h, "V8UsV8UsIi", "nc")
+BUILTIN(__builtin_msa_mini_u_w, "V4UiV4UiIi", "nc")
+BUILTIN(__builtin_msa_mini_u_d, "V2ULLiV2ULLiIi", "nc")
+
+BUILTIN(__builtin_msa_mod_s_b, "V16ScV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_mod_s_h, "V8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_mod_s_w, "V4SiV4SiV4Si", "nc")
+BUILTIN(__builtin_msa_mod_s_d, "V2SLLiV2SLLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_mod_u_b, "V16UcV16UcV16Uc", "nc")
+BUILTIN(__builtin_msa_mod_u_h, "V8UsV8UsV8Us", "nc")
+BUILTIN(__builtin_msa_mod_u_w, "V4UiV4UiV4Ui", "nc")
+BUILTIN(__builtin_msa_mod_u_d, "V2ULLiV2ULLiV2ULLi", "nc")
+
+BUILTIN(__builtin_msa_move_v, "V16ScV16Sc", "nc")
+
+BUILTIN(__builtin_msa_msub_q_h, "V8SsV8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_msub_q_w, "V4SiV4SiV4SiV4Si", "nc")
+
+BUILTIN(__builtin_msa_msubr_q_h, "V8SsV8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_msubr_q_w, "V4SiV4SiV4SiV4Si", "nc")
+
+BUILTIN(__builtin_msa_msubv_b, "V16ScV16ScV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_msubv_h, "V8SsV8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_msubv_w, "V4SiV4SiV4SiV4Si", "nc")
+BUILTIN(__builtin_msa_msubv_d, "V2SLLiV2SLLiV2SLLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_mul_q_h, "V8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_mul_q_w, "V4SiV4SiV4Si", "nc")
+
+BUILTIN(__builtin_msa_mulr_q_h, "V8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_mulr_q_w, "V4SiV4SiV4Si", "nc")
+
+BUILTIN(__builtin_msa_mulv_b, "V16ScV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_mulv_h, "V8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_mulv_w, "V4SiV4SiV4Si", "nc")
+BUILTIN(__builtin_msa_mulv_d, "V2SLLiV2SLLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_nloc_b, "V16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_nloc_h, "V8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_nloc_w, "V4SiV4Si", "nc")
+BUILTIN(__builtin_msa_nloc_d, "V2SLLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_nlzc_b, "V16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_nlzc_h, "V8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_nlzc_w, "V4SiV4Si", "nc")
+BUILTIN(__builtin_msa_nlzc_d, "V2SLLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_nor_v, "V16UcV16UcV16Uc", "nc")
+
+BUILTIN(__builtin_msa_nori_b, "V16UcV16cIUi", "nc")
+
+BUILTIN(__builtin_msa_or_v, "V16UcV16UcV16Uc", "nc")
+
+BUILTIN(__builtin_msa_ori_b, "V16UcV16UcIUi", "nc")
+
+BUILTIN(__builtin_msa_pckev_b, "V16cV16cV16c", "nc")
+BUILTIN(__builtin_msa_pckev_h, "V8sV8sV8s", "nc")
+BUILTIN(__builtin_msa_pckev_w, "V4iV4iV4i", "nc")
+BUILTIN(__builtin_msa_pckev_d, "V2LLiV2LLiV2LLi", "nc")
+
+BUILTIN(__builtin_msa_pckod_b, "V16cV16cV16c", "nc")
+BUILTIN(__builtin_msa_pckod_h, "V8sV8sV8s", "nc")
+BUILTIN(__builtin_msa_pckod_w, "V4iV4iV4i", "nc")
+BUILTIN(__builtin_msa_pckod_d, "V2LLiV2LLiV2LLi", "nc")
+
+BUILTIN(__builtin_msa_pcnt_b, "V16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_pcnt_h, "V8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_pcnt_w, "V4SiV4Si", "nc")
+BUILTIN(__builtin_msa_pcnt_d, "V2SLLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_sat_s_b, "V16ScV16ScIUi", "nc")
+BUILTIN(__builtin_msa_sat_s_h, "V8SsV8SsIUi", "nc")
+BUILTIN(__builtin_msa_sat_s_w, "V4SiV4SiIUi", "nc")
+BUILTIN(__builtin_msa_sat_s_d, "V2SLLiV2SLLiIUi", "nc")
+
+BUILTIN(__builtin_msa_sat_u_b, "V16UcV16UcIUi", "nc")
+BUILTIN(__builtin_msa_sat_u_h, "V8UsV8UsIUi", "nc")
+BUILTIN(__builtin_msa_sat_u_w, "V4UiV4UiIUi", "nc")
+BUILTIN(__builtin_msa_sat_u_d, "V2ULLiV2ULLiIUi", "nc")
+
+BUILTIN(__builtin_msa_shf_b, "V16cV16cIUi", "nc")
+BUILTIN(__builtin_msa_shf_h, "V8sV8sIUi", "nc")
+BUILTIN(__builtin_msa_shf_w, "V4iV4iIUi", "nc")
+
+BUILTIN(__builtin_msa_sld_b, "V16cV16cUi", "nc")
+BUILTIN(__builtin_msa_sld_h, "V8sV8sUi", "nc")
+BUILTIN(__builtin_msa_sld_w, "V4iV4iUi", "nc")
+BUILTIN(__builtin_msa_sld_d, "V2LLiV2LLiUi", "nc")
+
+BUILTIN(__builtin_msa_sldi_b, "V16cV16cIUi", "nc")
+BUILTIN(__builtin_msa_sldi_h, "V8sV8sIUi", "nc")
+BUILTIN(__builtin_msa_sldi_w, "V4iV4iIUi", "nc")
+BUILTIN(__builtin_msa_sldi_d, "V2LLiV2LLiIUi", "nc")
+
+BUILTIN(__builtin_msa_sll_b, "V16cV16cV16c", "nc")
+BUILTIN(__builtin_msa_sll_h, "V8sV8sV8s", "nc")
+BUILTIN(__builtin_msa_sll_w, "V4iV4iV4i", "nc")
+BUILTIN(__builtin_msa_sll_d, "V2LLiV2LLiV2LLi", "nc")
+
+BUILTIN(__builtin_msa_slli_b, "V16cV16cIUi", "nc")
+BUILTIN(__builtin_msa_slli_h, "V8sV8sIUi", "nc")
+BUILTIN(__builtin_msa_slli_w, "V4iV4iIUi", "nc")
+BUILTIN(__builtin_msa_slli_d, "V2LLiV2LLiIUi", "nc")
+
+BUILTIN(__builtin_msa_splat_b, "V16cV16cUi", "nc")
+BUILTIN(__builtin_msa_splat_h, "V8sV8sUi", "nc")
+BUILTIN(__builtin_msa_splat_w, "V4iV4iUi", "nc")
+BUILTIN(__builtin_msa_splat_d, "V2LLiV2LLiUi", "nc")
+
+BUILTIN(__builtin_msa_splati_b, "V16cV16cIUi", "nc")
+BUILTIN(__builtin_msa_splati_h, "V8sV8sIUi", "nc")
+BUILTIN(__builtin_msa_splati_w, "V4iV4iIUi", "nc")
+BUILTIN(__builtin_msa_splati_d, "V2LLiV2LLiIUi", "nc")
+
+BUILTIN(__builtin_msa_sra_b, "V16cV16cV16c", "nc")
+BUILTIN(__builtin_msa_sra_h, "V8sV8sV8s", "nc")
+BUILTIN(__builtin_msa_sra_w, "V4iV4iV4i", "nc")
+BUILTIN(__builtin_msa_sra_d, "V2LLiV2LLiV2LLi", "nc")
+
+BUILTIN(__builtin_msa_srai_b, "V16cV16cIUi", "nc")
+BUILTIN(__builtin_msa_srai_h, "V8sV8sIUi", "nc")
+BUILTIN(__builtin_msa_srai_w, "V4iV4iIUi", "nc")
+BUILTIN(__builtin_msa_srai_d, "V2LLiV2LLiIUi", "nc")
+
+BUILTIN(__builtin_msa_srar_b, "V16cV16cV16c", "nc")
+BUILTIN(__builtin_msa_srar_h, "V8sV8sV8s", "nc")
+BUILTIN(__builtin_msa_srar_w, "V4iV4iV4i", "nc")
+BUILTIN(__builtin_msa_srar_d, "V2LLiV2LLiV2LLi", "nc")
+
+BUILTIN(__builtin_msa_srari_b, "V16cV16cIUi", "nc")
+BUILTIN(__builtin_msa_srari_h, "V8sV8sIUi", "nc")
+BUILTIN(__builtin_msa_srari_w, "V4iV4iIUi", "nc")
+BUILTIN(__builtin_msa_srari_d, "V2LLiV2LLiIUi", "nc")
+
+BUILTIN(__builtin_msa_srl_b, "V16cV16cV16c", "nc")
+BUILTIN(__builtin_msa_srl_h, "V8sV8sV8s", "nc")
+BUILTIN(__builtin_msa_srl_w, "V4iV4iV4i", "nc")
+BUILTIN(__builtin_msa_srl_d, "V2LLiV2LLiV2LLi", "nc")
+
+BUILTIN(__builtin_msa_srli_b, "V16cV16cIUi", "nc")
+BUILTIN(__builtin_msa_srli_h, "V8sV8sIUi", "nc")
+BUILTIN(__builtin_msa_srli_w, "V4iV4iIUi", "nc")
+BUILTIN(__builtin_msa_srli_d, "V2LLiV2LLiIUi", "nc")
+
+BUILTIN(__builtin_msa_srlr_b, "V16cV16cV16c", "nc")
+BUILTIN(__builtin_msa_srlr_h, "V8sV8sV8s", "nc")
+BUILTIN(__builtin_msa_srlr_w, "V4iV4iV4i", "nc")
+BUILTIN(__builtin_msa_srlr_d, "V2LLiV2LLiV2LLi", "nc")
+
+BUILTIN(__builtin_msa_srlri_b, "V16cV16cIUi", "nc")
+BUILTIN(__builtin_msa_srlri_h, "V8sV8sIUi", "nc")
+BUILTIN(__builtin_msa_srlri_w, "V4iV4iIUi", "nc")
+BUILTIN(__builtin_msa_srlri_d, "V2LLiV2LLiIUi", "nc")
+
+BUILTIN(__builtin_msa_st_b, "vV16Scv*Ii", "nc")
+BUILTIN(__builtin_msa_st_h, "vV8Ssv*Ii", "nc")
+BUILTIN(__builtin_msa_st_w, "vV4Siv*Ii", "nc")
+BUILTIN(__builtin_msa_st_d, "vV2SLLiv*Ii", "nc")
+
+BUILTIN(__builtin_msa_subs_s_b, "V16ScV16ScV16Sc", "nc")
+BUILTIN(__builtin_msa_subs_s_h, "V8SsV8SsV8Ss", "nc")
+BUILTIN(__builtin_msa_subs_s_w, "V4SiV4SiV4Si", "nc")
+BUILTIN(__builtin_msa_subs_s_d, "V2SLLiV2SLLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_subs_u_b, "V16UcV16UcV16Uc", "nc")
+BUILTIN(__builtin_msa_subs_u_h, "V8UsV8UsV8Us", "nc")
+BUILTIN(__builtin_msa_subs_u_w, "V4UiV4UiV4Ui", "nc")
+BUILTIN(__builtin_msa_subs_u_d, "V2ULLiV2ULLiV2ULLi", "nc")
+
+BUILTIN(__builtin_msa_subsus_u_b, "V16UcV16UcV16Sc", "nc")
+BUILTIN(__builtin_msa_subsus_u_h, "V8UsV8UsV8Ss", "nc")
+BUILTIN(__builtin_msa_subsus_u_w, "V4UiV4UiV4Si", "nc")
+BUILTIN(__builtin_msa_subsus_u_d, "V2ULLiV2ULLiV2SLLi", "nc")
+
+BUILTIN(__builtin_msa_subsuu_s_b, "V16ScV16UcV16Uc", "nc")
+BUILTIN(__builtin_msa_subsuu_s_h, "V8SsV8UsV8Us", "nc")
+BUILTIN(__builtin_msa_subsuu_s_w, "V4SiV4UiV4Ui", "nc")
+BUILTIN(__builtin_msa_subsuu_s_d, "V2SLLiV2ULLiV2ULLi", "nc")
+
+BUILTIN(__builtin_msa_subv_b, "V16cV16cV16c", "nc")
+BUILTIN(__builtin_msa_subv_h, "V8sV8sV8s", "nc")
+BUILTIN(__builtin_msa_subv_w, "V4iV4iV4i", "nc")
+BUILTIN(__builtin_msa_subv_d, "V2LLiV2LLiV2LLi", "nc")
+
+BUILTIN(__builtin_msa_subvi_b, "V16cV16cIUi", "nc")
+BUILTIN(__builtin_msa_subvi_h, "V8sV8sIUi", "nc")
+BUILTIN(__builtin_msa_subvi_w, "V4iV4iIUi", "nc")
+BUILTIN(__builtin_msa_subvi_d, "V2LLiV2LLiIUi", "nc")
+
+BUILTIN(__builtin_msa_vshf_b, "V16cV16cV16cV16c", "nc")
+BUILTIN(__builtin_msa_vshf_h, "V8sV8sV8sV8s", "nc")
+BUILTIN(__builtin_msa_vshf_w, "V4iV4iV4iV4i", "nc")
+BUILTIN(__builtin_msa_vshf_d, "V2LLiV2LLiV2LLiV2LLi", "nc")
+
+BUILTIN(__builtin_msa_xor_v, "V16cV16cV16c", "nc")
+
+BUILTIN(__builtin_msa_xori_b, "V16cV16cIUi", "nc")
+
 #undef BUILTIN
diff --git a/include/clang/Basic/BuiltinsNVPTX.def b/include/clang/Basic/BuiltinsNVPTX.def
index 3c3f06c5ea3a..7e9b5eea8325 100644
--- a/include/clang/Basic/BuiltinsNVPTX.def
+++ b/include/clang/Basic/BuiltinsNVPTX.def
@@ -61,248 +61,506 @@ BUILTIN(__builtin_ptx_bar_sync, "vi", "n")
 
 
 // Builtins exposed as part of NVVM
-BUILTIN(__syncthreads, "v", "n")
-BUILTIN(__nvvm_bar0, "v", "n")
-BUILTIN(__nvvm_bar0_popc, "ii", "n")
-BUILTIN(__nvvm_bar0_and, "ii", "n")
-BUILTIN(__nvvm_bar0_or, "ii", "n")
-BUILTIN(__nvvm_membar_cta, "v", "n")
-BUILTIN(__nvvm_membar_gl, "v", "n")
-BUILTIN(__nvvm_membar_sys, "v", "n")
-BUILTIN(__nvvm_popc_i, "ii", "nc")
-BUILTIN(__nvvm_popc_ll, "LiLi", "nc")
-BUILTIN(__nvvm_prmt, "UiUiUiUi", "nc")
-BUILTIN(__nvvm_min_i, "iii", "nc")
-BUILTIN(__nvvm_min_ui, "UiUiUi", "nc")
-BUILTIN(__nvvm_min_ll, "LLiLLiLLi", "nc")
-BUILTIN(__nvvm_min_ull, "ULLiULLiULLi", "nc")
-BUILTIN(__nvvm_max_i, "iii", "nc")
-BUILTIN(__nvvm_max_ui, "UiUiUi", "nc")
-BUILTIN(__nvvm_max_ll, "LLiLLiLLi", "nc")
-BUILTIN(__nvvm_max_ull, "ULLiULLiULLi", "nc")
-BUILTIN(__nvvm_mulhi_i, "iii", "nc")
-BUILTIN(__nvvm_mulhi_ui, "UiUiUi", "nc")
-BUILTIN(__nvvm_mulhi_ll, "LLiLLiLLi", "nc")
-BUILTIN(__nvvm_mulhi_ull, "ULLiULLiULLi", "nc")
-BUILTIN(__nvvm_mul24_i, "iii", "nc")
-BUILTIN(__nvvm_mul24_ui, "UiUiUi", "nc")
-BUILTIN(__nvvm_brev32, "UiUi", "nc")
-BUILTIN(__nvvm_brev64, "ULLiULLi", "nc")
-BUILTIN(__nvvm_sad_i, "iiii", "nc")
-BUILTIN(__nvvm_sad_ui, "UiUiUiUi", "nc")
-BUILTIN(__nvvm_abs_i, "ii", "nc")
-BUILTIN(__nvvm_abs_ll, "LiLi", "nc")
-BUILTIN(__nvvm_floor_ftz_f, "ff", "nc")
-BUILTIN(__nvvm_floor_f, "ff", "nc")
-BUILTIN(__nvvm_floor_d, "dd", "nc")
-BUILTIN(__nvvm_fabs_ftz_f, "ff", "nc")
-BUILTIN(__nvvm_fabs_f, "ff", "nc")
-BUILTIN(__nvvm_fabs_d, "dd", "nc")
-BUILTIN(__nvvm_rcp_approx_ftz_d, "dd", "nc")
-BUILTIN(__nvvm_fmin_ftz_f, "fff", "nc")
-BUILTIN(__nvvm_fmin_f, "fff", "nc")
-BUILTIN(__nvvm_fmax_ftz_f, "fff", "nc")
-BUILTIN(__nvvm_fmax_f, "fff", "nc")
-BUILTIN(__nvvm_rsqrt_approx_ftz_f, "ff", "nc")
-BUILTIN(__nvvm_rsqrt_approx_f, "ff", "nc")
-BUILTIN(__nvvm_fmin_d, "ddd", "nc")
-BUILTIN(__nvvm_fmax_d, "ddd", "nc")
-BUILTIN(__nvvm_rsqrt_approx_d, "dd", "nc")
-BUILTIN(__nvvm_ceil_d, "dd", "nc")
-BUILTIN(__nvvm_trunc_d, "dd", "nc")
-BUILTIN(__nvvm_round_d, "dd", "nc")
-BUILTIN(__nvvm_ex2_approx_d, "dd", "nc")
-BUILTIN(__nvvm_lg2_approx_d, "dd", "nc")
-BUILTIN(__nvvm_round_ftz_f, "ff", "nc")
-BUILTIN(__nvvm_round_f, "ff", "nc")
-BUILTIN(__nvvm_ex2_approx_ftz_f, "ff", "nc")
-BUILTIN(__nvvm_ex2_approx_f, "ff", "nc")
-BUILTIN(__nvvm_lg2_approx_ftz_f, "ff", "nc")
-BUILTIN(__nvvm_lg2_approx_f, "ff", "nc")
-BUILTIN(__nvvm_sin_approx_ftz_f, "ff", "nc")
-BUILTIN(__nvvm_sin_approx_f, "ff", "nc")
-BUILTIN(__nvvm_cos_approx_ftz_f, "ff", "nc")
-BUILTIN(__nvvm_cos_approx_f, "ff", "nc")
-BUILTIN(__nvvm_trunc_ftz_f, "ff", "nc")
-BUILTIN(__nvvm_trunc_f, "ff", "nc")
-BUILTIN(__nvvm_ceil_ftz_f, "ff", "nc")
-BUILTIN(__nvvm_ceil_f, "ff", "nc")
-BUILTIN(__nvvm_saturate_d, "dd", "nc")
-BUILTIN(__nvvm_saturate_ftz_f, "ff", "nc")
-BUILTIN(__nvvm_saturate_f, "ff", "nc")
-BUILTIN(__nvvm_fma_rn_ftz_f, "ffff", "nc")
-BUILTIN(__nvvm_fma_rn_f, "ffff", "nc")
-BUILTIN(__nvvm_fma_rz_ftz_f, "ffff", "nc")
-BUILTIN(__nvvm_fma_rz_f, "ffff", "nc")
-BUILTIN(__nvvm_fma_rm_ftz_f, "ffff", "nc")
-BUILTIN(__nvvm_fma_rm_f, "ffff", "nc")
-BUILTIN(__nvvm_fma_rp_ftz_f, "ffff", "nc")
-BUILTIN(__nvvm_fma_rp_f, "ffff", "nc")
-BUILTIN(__nvvm_fma_rn_d, "dddd", "nc")
-BUILTIN(__nvvm_fma_rz_d, "dddd", "nc")
-BUILTIN(__nvvm_fma_rm_d, "dddd", "nc")
-BUILTIN(__nvvm_fma_rp_d, "dddd", "nc")
-BUILTIN(__nvvm_div_approx_ftz_f, "fff", "nc")
-BUILTIN(__nvvm_div_approx_f, "fff", "nc")
-BUILTIN(__nvvm_div_rn_ftz_f, "fff", "nc")
-BUILTIN(__nvvm_div_rn_f, "fff", "nc")
-BUILTIN(__nvvm_div_rz_ftz_f, "fff", "nc")
-BUILTIN(__nvvm_div_rz_f, "fff", "nc")
-BUILTIN(__nvvm_div_rm_ftz_f, "fff", "nc")
-BUILTIN(__nvvm_div_rm_f, "fff", "nc")
-BUILTIN(__nvvm_div_rp_ftz_f, "fff", "nc")
-BUILTIN(__nvvm_div_rp_f, "fff", "nc")
-BUILTIN(__nvvm_rcp_rn_ftz_f, "ff", "nc")
-BUILTIN(__nvvm_rcp_rn_f, "ff", "nc")
-BUILTIN(__nvvm_rcp_rz_ftz_f, "ff", "nc")
-BUILTIN(__nvvm_rcp_rz_f, "ff", "nc")
-BUILTIN(__nvvm_rcp_rm_ftz_f, "ff", "nc")
-BUILTIN(__nvvm_rcp_rm_f, "ff", "nc")
-BUILTIN(__nvvm_rcp_rp_ftz_f, "ff", "nc")
-BUILTIN(__nvvm_rcp_rp_f, "ff", "nc")
-BUILTIN(__nvvm_sqrt_rn_ftz_f, "ff", "nc")
-BUILTIN(__nvvm_sqrt_rn_f, "ff", "nc")
-BUILTIN(__nvvm_sqrt_rz_ftz_f, "ff", "nc")
-BUILTIN(__nvvm_sqrt_rz_f, "ff", "nc")
-BUILTIN(__nvvm_sqrt_rm_ftz_f, "ff", "nc")
-BUILTIN(__nvvm_sqrt_rm_f, "ff", "nc")
-BUILTIN(__nvvm_sqrt_rp_ftz_f, "ff", "nc")
-BUILTIN(__nvvm_sqrt_rp_f, "ff", "nc")
-BUILTIN(__nvvm_div_rn_d, "ddd", "nc")
-BUILTIN(__nvvm_div_rz_d, "ddd", "nc")
-BUILTIN(__nvvm_div_rm_d, "ddd", "nc")
-BUILTIN(__nvvm_div_rp_d, "ddd", "nc")
-BUILTIN(__nvvm_rcp_rn_d, "dd", "nc")
-BUILTIN(__nvvm_rcp_rz_d, "dd", "nc")
-BUILTIN(__nvvm_rcp_rm_d, "dd", "nc")
-BUILTIN(__nvvm_rcp_rp_d, "dd", "nc")
-BUILTIN(__nvvm_sqrt_rn_d, "dd", "nc")
-BUILTIN(__nvvm_sqrt_rz_d, "dd", "nc")
-BUILTIN(__nvvm_sqrt_rm_d, "dd", "nc")
-BUILTIN(__nvvm_sqrt_rp_d, "dd", "nc")
-BUILTIN(__nvvm_sqrt_approx_ftz_f, "ff", "nc")
-BUILTIN(__nvvm_sqrt_approx_f, "ff", "nc")
-BUILTIN(__nvvm_add_rn_d, "ddd", "nc")
-BUILTIN(__nvvm_add_rz_d, "ddd", "nc")
-BUILTIN(__nvvm_add_rm_d, "ddd", "nc")
-BUILTIN(__nvvm_add_rp_d, "ddd", "nc")
-BUILTIN(__nvvm_mul_rn_d, "ddd", "nc")
-BUILTIN(__nvvm_mul_rz_d, "ddd", "nc")
-BUILTIN(__nvvm_mul_rm_d, "ddd", "nc")
-BUILTIN(__nvvm_mul_rp_d, "ddd", "nc")
-BUILTIN(__nvvm_add_rm_ftz_f, "fff", "nc")
-BUILTIN(__nvvm_add_rm_f, "fff", "nc")
-BUILTIN(__nvvm_add_rp_ftz_f, "fff", "nc")
-BUILTIN(__nvvm_add_rp_f, "fff", "nc")
-BUILTIN(__nvvm_mul_rm_ftz_f, "fff", "nc")
-BUILTIN(__nvvm_mul_rm_f, "fff", "nc")
-BUILTIN(__nvvm_mul_rp_ftz_f, "fff", "nc")
-BUILTIN(__nvvm_mul_rp_f, "fff", "nc")
-BUILTIN(__nvvm_add_rn_ftz_f, "fff", "nc")
-BUILTIN(__nvvm_add_rn_f, "fff", "nc")
-BUILTIN(__nvvm_add_rz_ftz_f, "fff", "nc")
-BUILTIN(__nvvm_add_rz_f, "fff", "nc")
-BUILTIN(__nvvm_mul_rn_ftz_f, "fff", "nc")
-BUILTIN(__nvvm_mul_rn_f, "fff", "nc")
-BUILTIN(__nvvm_mul_rz_ftz_f, "fff", "nc")
-BUILTIN(__nvvm_mul_rz_f, "fff", "nc")
-BUILTIN(__nvvm_d2f_rn_ftz, "fd", "nc")
-BUILTIN(__nvvm_d2f_rn, "fd", "nc")
-BUILTIN(__nvvm_d2f_rz_ftz, "fd", "nc")
-BUILTIN(__nvvm_d2f_rz, "fd", "nc")
-BUILTIN(__nvvm_d2f_rm_ftz, "fd", "nc")
-BUILTIN(__nvvm_d2f_rm, "fd", "nc")
-BUILTIN(__nvvm_d2f_rp_ftz, "fd", "nc")
-BUILTIN(__nvvm_d2f_rp, "fd", "nc")
-BUILTIN(__nvvm_d2i_rn, "id", "nc")
-BUILTIN(__nvvm_d2i_rz, "id", "nc")
-BUILTIN(__nvvm_d2i_rm, "id", "nc")
-BUILTIN(__nvvm_d2i_rp, "id", "nc")
-BUILTIN(__nvvm_d2ui_rn, "Uid", "nc")
-BUILTIN(__nvvm_d2ui_rz, "Uid", "nc")
-BUILTIN(__nvvm_d2ui_rm, "Uid", "nc")
-BUILTIN(__nvvm_d2ui_rp, "Uid", "nc")
-BUILTIN(__nvvm_i2d_rn, "di", "nc")
-BUILTIN(__nvvm_i2d_rz, "di", "nc")
-BUILTIN(__nvvm_i2d_rm, "di", "nc")
-BUILTIN(__nvvm_i2d_rp, "di", "nc")
-BUILTIN(__nvvm_ui2d_rn, "dUi", "nc")
-BUILTIN(__nvvm_ui2d_rz, "dUi", "nc")
-BUILTIN(__nvvm_ui2d_rm, "dUi", "nc")
-BUILTIN(__nvvm_ui2d_rp, "dUi", "nc")
-BUILTIN(__nvvm_f2i_rn_ftz, "if", "nc")
-BUILTIN(__nvvm_f2i_rn, "if", "nc")
-BUILTIN(__nvvm_f2i_rz_ftz, "if", "nc")
-BUILTIN(__nvvm_f2i_rz, "if", "nc")
-BUILTIN(__nvvm_f2i_rm_ftz, "if", "nc")
-BUILTIN(__nvvm_f2i_rm, "if", "nc")
-BUILTIN(__nvvm_f2i_rp_ftz, "if", "nc")
-BUILTIN(__nvvm_f2i_rp, "if", "nc")
-BUILTIN(__nvvm_f2ui_rn_ftz, "Uif", "nc")
-BUILTIN(__nvvm_f2ui_rn, "Uif", "nc")
-BUILTIN(__nvvm_f2ui_rz_ftz, "Uif", "nc")
-BUILTIN(__nvvm_f2ui_rz, "Uif", "nc")
-BUILTIN(__nvvm_f2ui_rm_ftz, "Uif", "nc")
-BUILTIN(__nvvm_f2ui_rm, "Uif", "nc")
-BUILTIN(__nvvm_f2ui_rp_ftz, "Uif", "nc")
-BUILTIN(__nvvm_f2ui_rp, "Uif", "nc")
-BUILTIN(__nvvm_i2f_rn, "fi", "nc")
-BUILTIN(__nvvm_i2f_rz, "fi", "nc")
-BUILTIN(__nvvm_i2f_rm, "fi", "nc")
-BUILTIN(__nvvm_i2f_rp, "fi", "nc")
-BUILTIN(__nvvm_ui2f_rn, "fUi", "nc")
-BUILTIN(__nvvm_ui2f_rz, "fUi", "nc")
-BUILTIN(__nvvm_ui2f_rm, "fUi", "nc")
-BUILTIN(__nvvm_ui2f_rp, "fUi", "nc")
-BUILTIN(__nvvm_lohi_i2d, "dii", "nc")
-BUILTIN(__nvvm_d2i_lo, "id", "nc")
-BUILTIN(__nvvm_d2i_hi, "id", "nc")
-BUILTIN(__nvvm_f2ll_rn_ftz, "LLif", "nc")
-BUILTIN(__nvvm_f2ll_rn, "LLif", "nc")
-BUILTIN(__nvvm_f2ll_rz_ftz, "LLif", "nc")
-BUILTIN(__nvvm_f2ll_rz, "LLif", "nc")
-BUILTIN(__nvvm_f2ll_rm_ftz, "LLif", "nc")
-BUILTIN(__nvvm_f2ll_rm, "LLif", "nc")
-BUILTIN(__nvvm_f2ll_rp_ftz, "LLif", "nc")
-BUILTIN(__nvvm_f2ll_rp, "LLif", "nc")
-BUILTIN(__nvvm_f2ull_rn_ftz, "ULLif", "nc")
-BUILTIN(__nvvm_f2ull_rn, "ULLif", "nc")
-BUILTIN(__nvvm_f2ull_rz_ftz, "ULLif", "nc")
-BUILTIN(__nvvm_f2ull_rz, "ULLif", "nc")
-BUILTIN(__nvvm_f2ull_rm_ftz, "ULLif", "nc")
-BUILTIN(__nvvm_f2ull_rm, "ULLif", "nc")
-BUILTIN(__nvvm_f2ull_rp_ftz, "ULLif", "nc")
-BUILTIN(__nvvm_f2ull_rp, "ULLif", "nc")
-BUILTIN(__nvvm_d2ll_rn, "LLid", "nc")
-BUILTIN(__nvvm_d2ll_rz, "LLid", "nc")
-BUILTIN(__nvvm_d2ll_rm, "LLid", "nc")
-BUILTIN(__nvvm_d2ll_rp, "LLid", "nc")
-BUILTIN(__nvvm_d2ull_rn, "ULLid", "nc")
-BUILTIN(__nvvm_d2ull_rz, "ULLid", "nc")
-BUILTIN(__nvvm_d2ull_rm, "ULLid", "nc")
-BUILTIN(__nvvm_d2ull_rp, "ULLid", "nc")
-BUILTIN(__nvvm_ll2f_rn, "fLLi", "nc")
-BUILTIN(__nvvm_ll2f_rz, "fLLi", "nc")
-BUILTIN(__nvvm_ll2f_rm, "fLLi", "nc")
-BUILTIN(__nvvm_ll2f_rp, "fLLi", "nc")
-BUILTIN(__nvvm_ull2f_rn, "fULLi", "nc")
-BUILTIN(__nvvm_ull2f_rz, "fULLi", "nc")
-BUILTIN(__nvvm_ull2f_rm, "fULLi", "nc")
-BUILTIN(__nvvm_ull2f_rp, "fULLi", "nc")
-BUILTIN(__nvvm_ll2d_rn, "dLLi", "nc")
-BUILTIN(__nvvm_ll2d_rz, "dLLi", "nc")
-BUILTIN(__nvvm_ll2d_rm, "dLLi", "nc")
-BUILTIN(__nvvm_ll2d_rp, "dLLi", "nc")
-BUILTIN(__nvvm_ull2d_rn, "dULLi", "nc")
-BUILTIN(__nvvm_ull2d_rz, "dULLi", "nc")
-BUILTIN(__nvvm_ull2d_rm, "dULLi", "nc")
-BUILTIN(__nvvm_ull2d_rp, "dULLi", "nc")
-BUILTIN(__nvvm_f2h_rn_ftz, "Usf", "nc")
-BUILTIN(__nvvm_f2h_rn, "Usf", "nc")
-BUILTIN(__nvvm_h2f, "fUs", "nc")
-BUILTIN(__nvvm_bitcast_i2f, "fi", "nc")
-BUILTIN(__nvvm_bitcast_f2i, "if", "nc")
-BUILTIN(__nvvm_bitcast_ll2d, "dLLi", "nc")
-BUILTIN(__nvvm_bitcast_d2ll, "LLid", "nc")
+// MISC
+
+BUILTIN(__nvvm_clz_i, "ii", "")
+BUILTIN(__nvvm_clz_ll, "iLLi", "")
+BUILTIN(__nvvm_popc_i, "ii", "")
+BUILTIN(__nvvm_popc_ll, "iLLi", "")
+BUILTIN(__nvvm_prmt, "UiUiUiUi", "")
+
+// Min Max
+
+BUILTIN(__nvvm_min_i, "iii", "")
+BUILTIN(__nvvm_min_ui, "UiUiUi", "")
+BUILTIN(__nvvm_min_ll, "LLiLLiLLi", "")
+BUILTIN(__nvvm_min_ull, "ULLiULLiULLi", "")
+
+BUILTIN(__nvvm_max_i, "iii", "")
+BUILTIN(__nvvm_max_ui, "UiUiUi", "")
+BUILTIN(__nvvm_max_ll, "LLiLLiLLi", "")
+BUILTIN(__nvvm_max_ull, "ULLiULLiULLi", "")
+
+BUILTIN(__nvvm_fmax_ftz_f, "fff",  "")
+BUILTIN(__nvvm_fmax_f, "fff",  "")
+BUILTIN(__nvvm_fmin_ftz_f, "fff",  "")
+BUILTIN(__nvvm_fmin_f, "fff",  "")
+
+BUILTIN(__nvvm_fmax_d, "ddd", "")
+BUILTIN(__nvvm_fmin_d, "ddd", "")
+
+// Multiplication
+
+BUILTIN(__nvvm_mulhi_i, "iii", "")
+BUILTIN(__nvvm_mulhi_ui, "UiUiUi", "")
+BUILTIN(__nvvm_mulhi_ll, "LLiLLiLLi", "")
+BUILTIN(__nvvm_mulhi_ull, "ULLiULLiULLi", "")
+
+BUILTIN(__nvvm_mul_rn_ftz_f,  "fff", "")
+BUILTIN(__nvvm_mul_rn_f,  "fff", "")
+BUILTIN(__nvvm_mul_rz_ftz_f,  "fff", "")
+BUILTIN(__nvvm_mul_rz_f,  "fff", "")
+BUILTIN(__nvvm_mul_rm_ftz_f,  "fff", "")
+BUILTIN(__nvvm_mul_rm_f,  "fff", "")
+BUILTIN(__nvvm_mul_rp_ftz_f,  "fff", "")
+BUILTIN(__nvvm_mul_rp_f,  "fff", "")
+
+BUILTIN(__nvvm_mul_rn_d,  "ddd", "")
+BUILTIN(__nvvm_mul_rz_d,  "ddd", "")
+BUILTIN(__nvvm_mul_rm_d,  "ddd", "")
+BUILTIN(__nvvm_mul_rp_d,  "ddd", "")
+
+BUILTIN(__nvvm_mul24_i,  "iii", "")
+BUILTIN(__nvvm_mul24_ui,  "UiUiUi", "")
+
+// Div
+
+BUILTIN(__nvvm_div_approx_ftz_f,  "fff", "")
+BUILTIN(__nvvm_div_approx_f,  "fff", "")
+
+BUILTIN(__nvvm_div_rn_ftz_f,  "fff", "")
+BUILTIN(__nvvm_div_rn_f,  "fff", "")
+BUILTIN(__nvvm_div_rz_ftz_f,  "fff", "")
+BUILTIN(__nvvm_div_rz_f,  "fff", "")
+BUILTIN(__nvvm_div_rm_ftz_f,  "fff", "")
+BUILTIN(__nvvm_div_rm_f,  "fff", "")
+BUILTIN(__nvvm_div_rp_ftz_f,  "fff", "")
+BUILTIN(__nvvm_div_rp_f,  "fff", "")
+
+BUILTIN(__nvvm_div_rn_d,  "ddd", "")
+BUILTIN(__nvvm_div_rz_d,  "ddd", "")
+BUILTIN(__nvvm_div_rm_d,  "ddd", "")
+BUILTIN(__nvvm_div_rp_d,  "ddd", "")
+
+// Brev
+
+BUILTIN(__nvvm_brev32, "UiUi", "")
+BUILTIN(__nvvm_brev64, "ULLiULLi", "")
+
+// Sad
+
+BUILTIN(__nvvm_sad_i, "iii", "")
+BUILTIN(__nvvm_sad_ui, "UiUiUi", "")
+
+// Floor, Ceil
+
+BUILTIN(__nvvm_floor_ftz_f, "ff", "")
+BUILTIN(__nvvm_floor_f, "ff", "")
+BUILTIN(__nvvm_floor_d, "dd", "")
+
+BUILTIN(__nvvm_ceil_ftz_f, "ff", "")
+BUILTIN(__nvvm_ceil_f, "ff", "")
+BUILTIN(__nvvm_ceil_d, "dd", "")
+
+// Abs
+
+BUILTIN(__nvvm_abs_i, "ii", "")
+BUILTIN(__nvvm_abs_ll, "LLiLLi", "")
+
+BUILTIN(__nvvm_fabs_ftz_f, "ff", "")
+BUILTIN(__nvvm_fabs_f, "ff", "")
+BUILTIN(__nvvm_fabs_d, "dd", "")
+
+// Round
+
+BUILTIN(__nvvm_round_ftz_f, "ff", "")
+BUILTIN(__nvvm_round_f, "ff", "")
+BUILTIN(__nvvm_round_d, "dd", "")
+
+// Trunc
+
+BUILTIN(__nvvm_trunc_ftz_f, "ff", "")
+BUILTIN(__nvvm_trunc_f, "ff", "")
+BUILTIN(__nvvm_trunc_d, "dd", "")
+
+// Saturate
+
+BUILTIN(__nvvm_saturate_ftz_f, "ff", "")
+BUILTIN(__nvvm_saturate_f, "ff", "")
+BUILTIN(__nvvm_saturate_d, "dd", "")
+
+// Exp2, Log2
+
+BUILTIN(__nvvm_ex2_approx_ftz_f, "ff", "")
+BUILTIN(__nvvm_ex2_approx_f, "ff", "")
+BUILTIN(__nvvm_ex2_approx_d, "dd", "")
+
+BUILTIN(__nvvm_lg2_approx_ftz_f, "ff", "")
+BUILTIN(__nvvm_lg2_approx_f, "ff", "")
+BUILTIN(__nvvm_lg2_approx_d, "dd", "")
+
+// Sin, Cos
+
+BUILTIN(__nvvm_sin_approx_ftz_f, "ff", "")
+BUILTIN(__nvvm_sin_approx_f, "ff", "")
+
+BUILTIN(__nvvm_cos_approx_ftz_f, "ff", "")
+BUILTIN(__nvvm_cos_approx_f, "ff", "")
+
+// Fma
+
+BUILTIN(__nvvm_fma_rn_ftz_f, "ffff", "")
+BUILTIN(__nvvm_fma_rn_f, "ffff", "")
+BUILTIN(__nvvm_fma_rz_ftz_f, "ffff", "")
+BUILTIN(__nvvm_fma_rz_f, "ffff", "")
+BUILTIN(__nvvm_fma_rm_ftz_f, "ffff", "")
+BUILTIN(__nvvm_fma_rm_f, "ffff", "")
+BUILTIN(__nvvm_fma_rp_ftz_f, "ffff", "")
+BUILTIN(__nvvm_fma_rp_f, "ffff", "")
+BUILTIN(__nvvm_fma_rn_d, "dddd", "")
+BUILTIN(__nvvm_fma_rz_d, "dddd", "")
+BUILTIN(__nvvm_fma_rm_d, "dddd", "")
+BUILTIN(__nvvm_fma_rp_d, "dddd", "")
+
+// Rcp
+
+BUILTIN(__nvvm_rcp_rn_ftz_f, "ff", "")
+BUILTIN(__nvvm_rcp_rn_f, "ff", "")
+BUILTIN(__nvvm_rcp_rz_ftz_f, "ff", "")
+BUILTIN(__nvvm_rcp_rz_f, "ff", "")
+BUILTIN(__nvvm_rcp_rm_ftz_f, "ff", "")
+BUILTIN(__nvvm_rcp_rm_f, "ff", "")
+BUILTIN(__nvvm_rcp_rp_ftz_f, "ff", "")
+BUILTIN(__nvvm_rcp_rp_f, "ff", "")
+
+BUILTIN(__nvvm_rcp_rn_d, "dd", "")
+BUILTIN(__nvvm_rcp_rz_d, "dd", "")
+BUILTIN(__nvvm_rcp_rm_d, "dd", "")
+BUILTIN(__nvvm_rcp_rp_d, "dd", "")
+BUILTIN(__nvvm_rcp_approx_ftz_d, "dd", "")
+
+// Sqrt
+
+BUILTIN(__nvvm_sqrt_rn_ftz_f, "ff", "")
+BUILTIN(__nvvm_sqrt_rn_f, "ff", "")
+BUILTIN(__nvvm_sqrt_rz_ftz_f, "ff", "")
+BUILTIN(__nvvm_sqrt_rz_f, "ff", "")
+BUILTIN(__nvvm_sqrt_rm_ftz_f, "ff", "")
+BUILTIN(__nvvm_sqrt_rm_f, "ff", "")
+BUILTIN(__nvvm_sqrt_rp_ftz_f, "ff", "")
+BUILTIN(__nvvm_sqrt_rp_f, "ff", "")
+BUILTIN(__nvvm_sqrt_approx_ftz_f, "ff", "")
+BUILTIN(__nvvm_sqrt_approx_f, "ff", "")
+
+BUILTIN(__nvvm_sqrt_rn_d, "dd", "")
+BUILTIN(__nvvm_sqrt_rz_d, "dd", "")
+BUILTIN(__nvvm_sqrt_rm_d, "dd", "")
+BUILTIN(__nvvm_sqrt_rp_d, "dd", "")
+
+// Rsqrt
+
+BUILTIN(__nvvm_rsqrt_approx_ftz_f, "ff", "")
+BUILTIN(__nvvm_rsqrt_approx_f, "ff", "")
+BUILTIN(__nvvm_rsqrt_approx_d, "dd", "")
+
+// Add
+
+BUILTIN(__nvvm_add_rn_ftz_f, "ff", "")
+BUILTIN(__nvvm_add_rn_f, "ff", "")
+BUILTIN(__nvvm_add_rz_ftz_f, "ff", "")
+BUILTIN(__nvvm_add_rz_f, "ff", "")
+BUILTIN(__nvvm_add_rm_ftz_f, "ff", "")
+BUILTIN(__nvvm_add_rm_f, "ff", "")
+BUILTIN(__nvvm_add_rp_ftz_f, "ff", "")
+BUILTIN(__nvvm_add_rp_f, "ff", "")
+
+BUILTIN(__nvvm_add_rn_d, "dd", "")
+BUILTIN(__nvvm_add_rz_d, "dd", "")
+BUILTIN(__nvvm_add_rm_d, "dd", "")
+BUILTIN(__nvvm_add_rp_d, "dd", "")
+
+// Convert
+
+BUILTIN(__nvvm_d2f_rn_ftz, "fd", "")
+BUILTIN(__nvvm_d2f_rn, "fd", "")
+BUILTIN(__nvvm_d2f_rz_ftz, "fd", "")
+BUILTIN(__nvvm_d2f_rz, "fd", "")
+BUILTIN(__nvvm_d2f_rm_ftz, "fd", "")
+BUILTIN(__nvvm_d2f_rm, "fd", "")
+BUILTIN(__nvvm_d2f_rp_ftz, "fd", "")
+BUILTIN(__nvvm_d2f_rp, "fd", "")
+
+BUILTIN(__nvvm_d2i_rn, "id", "")
+BUILTIN(__nvvm_d2i_rz, "id", "")
+BUILTIN(__nvvm_d2i_rm, "id", "")
+BUILTIN(__nvvm_d2i_rp, "id", "")
+
+BUILTIN(__nvvm_d2ui_rn, "Uid", "")
+BUILTIN(__nvvm_d2ui_rz, "Uid", "")
+BUILTIN(__nvvm_d2ui_rm, "Uid", "")
+BUILTIN(__nvvm_d2ui_rp, "Uid", "")
+
+BUILTIN(__nvvm_i2d_rn, "di", "")
+BUILTIN(__nvvm_i2d_rz, "di", "")
+BUILTIN(__nvvm_i2d_rm, "di", "")
+BUILTIN(__nvvm_i2d_rp, "di", "")
+
+BUILTIN(__nvvm_ui2d_rn, "dUi", "")
+BUILTIN(__nvvm_ui2d_rz, "dUi", "")
+BUILTIN(__nvvm_ui2d_rm, "dUi", "")
+BUILTIN(__nvvm_ui2d_rp, "dUi", "")
+
+BUILTIN(__nvvm_f2i_rn_ftz, "if", "")
+BUILTIN(__nvvm_f2i_rn, "if", "")
+BUILTIN(__nvvm_f2i_rz_ftz, "if", "")
+BUILTIN(__nvvm_f2i_rz, "if", "")
+BUILTIN(__nvvm_f2i_rm_ftz, "if", "")
+BUILTIN(__nvvm_f2i_rm, "if", "")
+BUILTIN(__nvvm_f2i_rp_ftz, "if", "")
+BUILTIN(__nvvm_f2i_rp, "if", "")
+
+BUILTIN(__nvvm_f2ui_rn_ftz, "Uif", "")
+BUILTIN(__nvvm_f2ui_rn, "Uif", "")
+BUILTIN(__nvvm_f2ui_rz_ftz, "Uif", "")
+BUILTIN(__nvvm_f2ui_rz, "Uif", "")
+BUILTIN(__nvvm_f2ui_rm_ftz, "Uif", "")
+BUILTIN(__nvvm_f2ui_rm, "Uif", "")
+BUILTIN(__nvvm_f2ui_rp_ftz, "Uif", "")
+BUILTIN(__nvvm_f2ui_rp, "Uif", "")
+
+BUILTIN(__nvvm_i2f_rn, "fi", "")
+BUILTIN(__nvvm_i2f_rz, "fi", "")
+BUILTIN(__nvvm_i2f_rm, "fi", "")
+BUILTIN(__nvvm_i2f_rp, "fi", "")
+
+BUILTIN(__nvvm_ui2f_rn, "fUi", "")
+BUILTIN(__nvvm_ui2f_rz, "fUi", "")
+BUILTIN(__nvvm_ui2f_rm, "fUi", "")
+BUILTIN(__nvvm_ui2f_rp, "fUi", "")
+
+BUILTIN(__nvvm_lohi_i2d, "dii", "")
+
+BUILTIN(__nvvm_d2i_lo, "id", "")
+BUILTIN(__nvvm_d2i_hi, "id", "")
+
+BUILTIN(__nvvm_f2ll_rn_ftz, "LLif", "")
+BUILTIN(__nvvm_f2ll_rn, "LLif", "")
+BUILTIN(__nvvm_f2ll_rz_ftz, "LLif", "")
+BUILTIN(__nvvm_f2ll_rz, "LLif", "")
+BUILTIN(__nvvm_f2ll_rm_ftz, "LLif", "")
+BUILTIN(__nvvm_f2ll_rm, "LLif", "")
+BUILTIN(__nvvm_f2ll_rp_ftz, "LLif", "")
+BUILTIN(__nvvm_f2ll_rp, "LLif", "")
+
+BUILTIN(__nvvm_f2ull_rn_ftz, "ULLif", "")
+BUILTIN(__nvvm_f2ull_rn, "ULLif", "")
+BUILTIN(__nvvm_f2ull_rz_ftz, "ULLif", "")
+BUILTIN(__nvvm_f2ull_rz, "ULLif", "")
+BUILTIN(__nvvm_f2ull_rm_ftz, "ULLif", "")
+BUILTIN(__nvvm_f2ull_rm, "ULLif", "")
+BUILTIN(__nvvm_f2ull_rp_ftz, "ULLif", "")
+BUILTIN(__nvvm_f2ull_rp, "ULLif", "")
+
+BUILTIN(__nvvm_d2ll_rn, "LLid", "")
+BUILTIN(__nvvm_d2ll_rz, "LLid", "")
+BUILTIN(__nvvm_d2ll_rm, "LLid", "")
+BUILTIN(__nvvm_d2ll_rp, "LLid", "")
+
+BUILTIN(__nvvm_d2ull_rn, "ULLid", "")
+BUILTIN(__nvvm_d2ull_rz, "ULLid", "")
+BUILTIN(__nvvm_d2ull_rm, "ULLid", "")
+BUILTIN(__nvvm_d2ull_rp, "ULLid", "")
+
+BUILTIN(__nvvm_ll2f_rn, "fLLi", "")
+BUILTIN(__nvvm_ll2f_rz, "fLLi", "")
+BUILTIN(__nvvm_ll2f_rm, "fLLi", "")
+BUILTIN(__nvvm_ll2f_rp, "fLLi", "")
+
+BUILTIN(__nvvm_ull2f_rn, "fULLi", "")
+BUILTIN(__nvvm_ull2f_rz, "fULLi", "")
+BUILTIN(__nvvm_ull2f_rm, "fULLi", "")
+BUILTIN(__nvvm_ull2f_rp, "fULLi", "")
+
+BUILTIN(__nvvm_ll2d_rn, "dLLi", "")
+BUILTIN(__nvvm_ll2d_rz, "dLLi", "")
+BUILTIN(__nvvm_ll2d_rm, "dLLi", "")
+BUILTIN(__nvvm_ll2d_rp, "dLLi", "")
+
+BUILTIN(__nvvm_ull2d_rn, "dULLi", "")
+BUILTIN(__nvvm_ull2d_rz, "dULLi", "")
+BUILTIN(__nvvm_ull2d_rm, "dULLi", "")
+BUILTIN(__nvvm_ull2d_rp, "dULLi", "")
+
+BUILTIN(__nvvm_f2h_rn_ftz, "Usf", "")
+BUILTIN(__nvvm_f2h_rn, "Usf", "")
+
+BUILTIN(__nvvm_h2f, "fUs", "")
+
+// Bitcast
+
+BUILTIN(__nvvm_bitcast_f2i, "if", "")
+BUILTIN(__nvvm_bitcast_i2f, "fi", "")
+
+BUILTIN(__nvvm_bitcast_ll2d, "dLLi", "")
+BUILTIN(__nvvm_bitcast_d2ll, "LLid", "")
+
+// Sync
+
+BUILTIN(__syncthreads, "v", "")
+BUILTIN(__nvvm_bar0, "v", "")
+BUILTIN(__nvvm_bar0_popc, "ii", "")
+BUILTIN(__nvvm_bar0_and, "ii", "")
+BUILTIN(__nvvm_bar0_or, "ii", "")
+
+// Membar
+
+BUILTIN(__nvvm_membar_cta, "v", "")
+BUILTIN(__nvvm_membar_gl, "v", "")
+BUILTIN(__nvvm_membar_sys, "v", "")
+
+// Memcpy, Memset
+
+BUILTIN(__nvvm_memcpy, "vUc*Uc*zi","")
+BUILTIN(__nvvm_memset, "vUc*Uczi","")
+
+// Image
+
+BUILTIN(__builtin_ptx_read_image2Dfi_, "V4fiiii", "")
+BUILTIN(__builtin_ptx_read_image2Dff_, "V4fiiff", "")
+BUILTIN(__builtin_ptx_read_image2Dii_, "V4iiiii", "")
+BUILTIN(__builtin_ptx_read_image2Dif_, "V4iiiff", "")
+
+BUILTIN(__builtin_ptx_read_image3Dfi_, "V4fiiiiii", "")
+BUILTIN(__builtin_ptx_read_image3Dff_, "V4fiiffff", "")
+BUILTIN(__builtin_ptx_read_image3Dii_, "V4iiiiiii", "")
+BUILTIN(__builtin_ptx_read_image3Dif_, "V4iiiffff", "")
+
+BUILTIN(__builtin_ptx_write_image2Df_, "viiiffff", "")
+BUILTIN(__builtin_ptx_write_image2Di_, "viiiiiii", "")
+BUILTIN(__builtin_ptx_write_image2Dui_, "viiiUiUiUiUi", "")
+BUILTIN(__builtin_ptx_get_image_depthi_, "ii", "")
+BUILTIN(__builtin_ptx_get_image_heighti_, "ii", "")
+BUILTIN(__builtin_ptx_get_image_widthi_, "ii", "")
+BUILTIN(__builtin_ptx_get_image_channel_data_typei_, "ii", "")
+BUILTIN(__builtin_ptx_get_image_channel_orderi_, "ii", "")
+
+// Atomic
+//
+// We need the atom intrinsics because
+// - they are used in converging analysis
+// - they are used in address space analysis and optimization
+// So it does not hurt to expose them as builtins.
+//
+BUILTIN(__nvvm_atom_add_g_i, "iiD*1i", "n")
+BUILTIN(__nvvm_atom_add_s_i, "iiD*3i", "n")
+BUILTIN(__nvvm_atom_add_gen_i, "iiD*i", "n")
+BUILTIN(__nvvm_atom_add_g_l, "LiLiD*1Li", "n")
+BUILTIN(__nvvm_atom_add_s_l, "LiLiD*3Li", "n")
+BUILTIN(__nvvm_atom_add_gen_l, "LiLiD*Li", "n")
+BUILTIN(__nvvm_atom_add_g_ll, "LLiLLiD*1LLi", "n")
+BUILTIN(__nvvm_atom_add_s_ll, "LLiLLiD*3LLi", "n")
+BUILTIN(__nvvm_atom_add_gen_ll, "LLiLLiD*LLi", "n")
+BUILTIN(__nvvm_atom_add_g_f, "ffD*1f", "n")
+BUILTIN(__nvvm_atom_add_s_f, "ffD*3f", "n")
+BUILTIN(__nvvm_atom_add_gen_f, "ffD*f", "n")
+
+BUILTIN(__nvvm_atom_sub_g_i, "iiD*1i", "n")
+BUILTIN(__nvvm_atom_sub_s_i, "iiD*3i", "n")
+BUILTIN(__nvvm_atom_sub_gen_i, "iiD*i", "n")
+BUILTIN(__nvvm_atom_sub_g_l, "LiLiD*1Li", "n")
+BUILTIN(__nvvm_atom_sub_s_l, "LiLiD*3Li", "n")
+BUILTIN(__nvvm_atom_sub_gen_l, "LiLiD*Li", "n")
+BUILTIN(__nvvm_atom_sub_g_ll, "LLiLLiD*1LLi", "n")
+BUILTIN(__nvvm_atom_sub_s_ll, "LLiLLiD*3LLi", "n")
+BUILTIN(__nvvm_atom_sub_gen_ll, "LLiLLiD*LLi", "n")
+
+BUILTIN(__nvvm_atom_xchg_g_i, "iiD*1i", "n")
+BUILTIN(__nvvm_atom_xchg_s_i, "iiD*3i", "n")
+BUILTIN(__nvvm_atom_xchg_gen_i, "iiD*i", "n")
+BUILTIN(__nvvm_atom_xchg_g_l, "LiLiD*1Li", "n")
+BUILTIN(__nvvm_atom_xchg_s_l, "LiLiD*3Li", "n")
+BUILTIN(__nvvm_atom_xchg_gen_l, "LiLiD*Li", "n")
+BUILTIN(__nvvm_atom_xchg_g_ll, "LLiLLiD*1LLi", "n")
+BUILTIN(__nvvm_atom_xchg_s_ll, "LLiLLiD*3LLi", "n")
+BUILTIN(__nvvm_atom_xchg_gen_ll, "LLiLLiD*LLi", "n")
+
+BUILTIN(__nvvm_atom_max_g_i, "iiD*1i", "n")
+BUILTIN(__nvvm_atom_max_s_i, "iiD*3i", "n")
+BUILTIN(__nvvm_atom_max_gen_i, "iiD*i", "n")
+BUILTIN(__nvvm_atom_max_g_ui, "UiUiD*1Ui", "n")
+BUILTIN(__nvvm_atom_max_s_ui, "UiUiD*3Ui", "n")
+BUILTIN(__nvvm_atom_max_gen_ui, "UiUiD*Ui", "n")
+BUILTIN(__nvvm_atom_max_g_l, "LiLiD*1Li", "n")
+BUILTIN(__nvvm_atom_max_s_l, "LiLiD*3Li", "n")
+BUILTIN(__nvvm_atom_max_gen_l, "LiLiD*Li", "n")
+BUILTIN(__nvvm_atom_max_g_ul, "ULiULiD*1ULi", "n")
+BUILTIN(__nvvm_atom_max_s_ul, "ULiULiD*3ULi", "n")
+BUILTIN(__nvvm_atom_max_gen_ul, "ULiULiD*ULi", "n")
+BUILTIN(__nvvm_atom_max_g_ll, "LLiLLiD*1LLi", "n")
+BUILTIN(__nvvm_atom_max_s_ll, "LLiLLiD*3LLi", "n")
+BUILTIN(__nvvm_atom_max_gen_ll, "LLiLLiD*LLi", "n")
+BUILTIN(__nvvm_atom_max_g_ull, "ULLiULLiD*1ULLi", "n")
+BUILTIN(__nvvm_atom_max_s_ull, "ULLiULLiD*3ULLi", "n")
+BUILTIN(__nvvm_atom_max_gen_ull, "ULLiULLiD*ULLi", "n")
+
+BUILTIN(__nvvm_atom_min_g_i, "iiD*1i", "n")
+BUILTIN(__nvvm_atom_min_s_i, "iiD*3i", "n")
+BUILTIN(__nvvm_atom_min_gen_i, "iiD*i", "n")
+BUILTIN(__nvvm_atom_min_g_ui, "UiUiD*1Ui", "n")
+BUILTIN(__nvvm_atom_min_s_ui, "UiUiD*3Ui", "n")
+BUILTIN(__nvvm_atom_min_gen_ui, "UiUiD*Ui", "n")
+BUILTIN(__nvvm_atom_min_g_l, "LiLiD*1Li", "n")
+BUILTIN(__nvvm_atom_min_s_l, "LiLiD*3Li", "n")
+BUILTIN(__nvvm_atom_min_gen_l, "LiLi10D*Li", "n")
+BUILTIN(__nvvm_atom_min_g_ul, "ULiULiD*1ULi", "n")
+BUILTIN(__nvvm_atom_min_s_ul, "ULiULiD*3ULi", "n")
+BUILTIN(__nvvm_atom_min_gen_ul, "ULiULiD*ULi", "n")
+BUILTIN(__nvvm_atom_min_g_ll, "LLiLLiD*1LLi", "n")
+BUILTIN(__nvvm_atom_min_s_ll, "LLiLLiD*3LLi", "n")
+BUILTIN(__nvvm_atom_min_gen_ll, "LLiLLiD*LLi", "n")
+BUILTIN(__nvvm_atom_min_g_ull, "ULLiULLiD*1ULLi", "n")
+BUILTIN(__nvvm_atom_min_s_ull, "ULLiULLiD*3ULLi", "n")
+BUILTIN(__nvvm_atom_min_gen_ull, "ULLiULLiD*ULLi", "n")
+
+BUILTIN(__nvvm_atom_inc_g_ui, "UiUiD*1Ui", "n")
+BUILTIN(__nvvm_atom_inc_s_ui, "UiUiD*3Ui", "n")
+BUILTIN(__nvvm_atom_inc_gen_ui, "UiUiD*Ui", "n")
+BUILTIN(__nvvm_atom_dec_g_ui, "UiUiD*1Ui", "n")
+BUILTIN(__nvvm_atom_dec_s_ui, "UiUiD*3Ui", "n")
+BUILTIN(__nvvm_atom_dec_gen_ui, "UiUiD*Ui", "n")
+
+BUILTIN(__nvvm_atom_and_g_i, "iiD*1i", "n")
+BUILTIN(__nvvm_atom_and_s_i, "iiD*3i", "n")
+BUILTIN(__nvvm_atom_and_gen_i, "iiD*i", "n")
+BUILTIN(__nvvm_atom_and_g_l, "LiLiD*1Li", "n")
+BUILTIN(__nvvm_atom_and_s_l, "LiLiD*3Li", "n")
+BUILTIN(__nvvm_atom_and_gen_l, "LiLiD*Li", "n")
+BUILTIN(__nvvm_atom_and_g_ll, "LLiLLiD*1LLi", "n")
+BUILTIN(__nvvm_atom_and_s_ll, "LLiLLiD*3LLi", "n")
+BUILTIN(__nvvm_atom_and_gen_ll, "LLiLLiD*LLi", "n")
+
+BUILTIN(__nvvm_atom_or_g_i, "iiD*1i", "n")
+BUILTIN(__nvvm_atom_or_s_i, "iiD*3i", "n")
+BUILTIN(__nvvm_atom_or_gen_i, "iiD*i", "n")
+BUILTIN(__nvvm_atom_or_g_l, "LiLiD*1Li", "n")
+BUILTIN(__nvvm_atom_or_s_l, "LiLiD*3Li", "n")
+BUILTIN(__nvvm_atom_or_gen_l, "LiLiD*Li", "n")
+BUILTIN(__nvvm_atom_or_g_ll, "LLiLLiD*1LLi", "n")
+BUILTIN(__nvvm_atom_or_s_ll, "LLiLLiD*3LLi", "n")
+BUILTIN(__nvvm_atom_or_gen_ll, "LLiLLiD*LLi", "n")
+
+BUILTIN(__nvvm_atom_xor_g_i, "iiD*1i", "n")
+BUILTIN(__nvvm_atom_xor_s_i, "iiD*3i", "n")
+BUILTIN(__nvvm_atom_xor_gen_i, "iiD*i", "n")
+BUILTIN(__nvvm_atom_xor_g_l, "LiLiD*1Li", "n")
+BUILTIN(__nvvm_atom_xor_s_l, "LiLiD*3Li", "n")
+BUILTIN(__nvvm_atom_xor_gen_l, "LiLiD*Li", "n")
+BUILTIN(__nvvm_atom_xor_g_ll, "LLiLLiD*1LLi", "n")
+BUILTIN(__nvvm_atom_xor_s_ll, "LLiLLiD*3LLi", "n")
+BUILTIN(__nvvm_atom_xor_gen_ll, "LLiLLiD*LLi", "n")
+
+BUILTIN(__nvvm_atom_cas_g_i, "iiD*1ii", "n")
+BUILTIN(__nvvm_atom_cas_s_i, "iiD*3ii", "n")
+BUILTIN(__nvvm_atom_cas_gen_i, "iiD*ii", "n")
+BUILTIN(__nvvm_atom_cas_g_l, "LiLiD*1LiLi", "n")
+BUILTIN(__nvvm_atom_cas_s_l, "LiLiD*3LiLi", "n")
+BUILTIN(__nvvm_atom_cas_gen_l, "LiLiD*LiLi", "n")
+BUILTIN(__nvvm_atom_cas_g_ll, "LLiLLiD*1LLiLLi", "n")
+BUILTIN(__nvvm_atom_cas_s_ll, "LLiLLiD*3LLiLLi", "n")
+BUILTIN(__nvvm_atom_cas_gen_ll, "LLiLLiD*LLiLLi", "n")
+
+// Compiler Error Warn
+BUILTIN(__nvvm_compiler_error, "vcC*4", "n")
+BUILTIN(__nvvm_compiler_warn, "vcC*4", "n")
 
 #undef BUILTIN
diff --git a/include/clang/Basic/BuiltinsX86.def b/include/clang/Basic/BuiltinsX86.def
index d536821d55d9..51397fa45df6 100644
--- a/include/clang/Basic/BuiltinsX86.def
+++ b/include/clang/Basic/BuiltinsX86.def
@@ -258,6 +258,7 @@ BUILTIN(__builtin_ia32_storeupd, "vd*V2d", "")
 BUILTIN(__builtin_ia32_movmskpd, "iV2d", "")
 BUILTIN(__builtin_ia32_pmovmskb128, "iV16c", "")
 BUILTIN(__builtin_ia32_movnti, "vi*i", "")
+BUILTIN(__builtin_ia32_movnti64, "vLLi*LLi", "")
 BUILTIN(__builtin_ia32_movntpd, "vd*V2d", "")
 BUILTIN(__builtin_ia32_movntdq, "vV2LLi*V2LLi", "")
 BUILTIN(__builtin_ia32_psadbw128, "V2LLiV16cV16c", "")
@@ -559,7 +560,7 @@ BUILTIN(__builtin_ia32_movntdqa256, "V4LLiV4LLi*", "")
 BUILTIN(__builtin_ia32_vbroadcastss_ps, "V4fV4f", "")
 BUILTIN(__builtin_ia32_vbroadcastss_ps256, "V8fV4f", "")
 BUILTIN(__builtin_ia32_vbroadcastsd_pd256, "V4dV2d", "")
-BUILTIN(__builtin_ia32_vbroadcastsi256, "V4LLiV2LLiC*", "")
+BUILTIN(__builtin_ia32_vbroadcastsi256, "V4LLiV2LLi", "")
 BUILTIN(__builtin_ia32_pblendd128, "V4iV4iV4iIi", "")
 BUILTIN(__builtin_ia32_pblendd256, "V8iV8iV8iIi", "")
 BUILTIN(__builtin_ia32_pbroadcastb256, "V32cV16c", "")
@@ -641,6 +642,19 @@ BUILTIN(__builtin_ia32_pdep_di, "ULLiULLiULLi", "")
 BUILTIN(__builtin_ia32_pext_si, "UiUiUi", "")
 BUILTIN(__builtin_ia32_pext_di, "ULLiULLiULLi", "")
 
+// TBM
+BUILTIN(__builtin_ia32_bextri_u32, "UiUiIUi", "")
+BUILTIN(__builtin_ia32_bextri_u64, "ULLiULLiIULLi", "")
+
+// SHA
+BUILTIN(__builtin_ia32_sha1rnds4, "V4iV4iV4iIc", "")
+BUILTIN(__builtin_ia32_sha1nexte, "V4iV4iV4i", "")
+BUILTIN(__builtin_ia32_sha1msg1, "V4iV4iV4i", "")
+BUILTIN(__builtin_ia32_sha1msg2, "V4iV4iV4i", "")
+BUILTIN(__builtin_ia32_sha256rnds2, "V4iV4iV4iV4i", "")
+BUILTIN(__builtin_ia32_sha256msg1, "V4iV4iV4i", "")
+BUILTIN(__builtin_ia32_sha256msg2, "V4iV4iV4i", "")
+
 // FMA4
 BUILTIN(__builtin_ia32_vfmaddps, "V4fV4fV4fV4f", "")
 BUILTIN(__builtin_ia32_vfmaddpd, "V2dV2dV2dV2d", "")
diff --git a/include/clang/Basic/BuiltinsXCore.def b/include/clang/Basic/BuiltinsXCore.def
new file mode 100644
index 000000000000..672d20578a63
--- /dev/null
+++ b/include/clang/Basic/BuiltinsXCore.def
@@ -0,0 +1,22 @@
+//===--- BuiltinsXCore.def - XCore Builtin function database ----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the XCore-specific builtin function database.  Users of
+// this file must define the BUILTIN macro to make use of this information.
+//
+//===----------------------------------------------------------------------===//
+
+// The format of this database matches clang/Basic/Builtins.def.
+
+BUILTIN(__builtin_bitrev, "UiUi", "nc")
+BUILTIN(__builtin_getid, "Si", "nc")
+BUILTIN(__builtin_getps, "UiUi", "n")
+BUILTIN(__builtin_setps, "vUiUi", "n")
+
+#undef BUILTIN
diff --git a/include/clang/Basic/CapturedStmt.h b/include/clang/Basic/CapturedStmt.h
index 484bbb1feeef..c4a289b696dd 100644
--- a/include/clang/Basic/CapturedStmt.h
+++ b/include/clang/Basic/CapturedStmt.h
@@ -15,7 +15,8 @@ namespace clang {
 
 /// \brief The different kinds of captured statement.
 enum CapturedRegionKind {
-  CR_Default
+  CR_Default,
+  CR_OpenMP
 };
 
 } // end namespace clang
diff --git a/include/clang/Basic/DeclNodes.td b/include/clang/Basic/DeclNodes.td
index ad2afa7a57cd..18bca5741962 100644
--- a/include/clang/Basic/DeclNodes.td
+++ b/include/clang/Basic/DeclNodes.td
@@ -44,6 +44,9 @@ def Named : Decl<1>;
           def CXXDestructor : DDecl<CXXMethod>;
           def CXXConversion : DDecl<CXXMethod>;
       def Var : DDecl<Declarator>;
+        def VarTemplateSpecialization : DDecl<Var>;
+          def VarTemplatePartialSpecialization
+            : DDecl<VarTemplateSpecialization>;
         def ImplicitParam : DDecl<Var>;
         def ParmVar : DDecl<Var>;
       def NonTypeTemplateParm : DDecl<Declarator>;
@@ -51,6 +54,7 @@ def Named : Decl<1>;
     def RedeclarableTemplate : DDecl<Template, 1>;
       def FunctionTemplate : DDecl<RedeclarableTemplate>;
       def ClassTemplate : DDecl<RedeclarableTemplate>;
+      def VarTemplate : DDecl<RedeclarableTemplate>;
       def TypeAliasTemplate : DDecl<RedeclarableTemplate>;
     def TemplateTemplateParm : DDecl<Template>;
   def Using : DDecl<Named>;
diff --git a/include/clang/Basic/Diagnostic.h b/include/clang/Basic/Diagnostic.h
index 3e125944a361..c057bdf63436 100644
--- a/include/clang/Basic/Diagnostic.h
+++ b/include/clang/Basic/Diagnostic.h
@@ -21,7 +21,6 @@
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/IntrusiveRefCntPtr.h"
-#include "llvm/ADT/OwningPtr.h"
 #include "llvm/Support/type_traits.h"
 #include <list>
 #include <vector>
@@ -490,7 +489,14 @@ public:
       FatalErrorOccurred = true;
     LastDiagLevel = DiagnosticIDs::Ignored;
   }
-  
+
+  /// \brief Determine whether the previous diagnostic was ignored. This can
+  /// be used by clients that want to determine whether notes attached to a
+  /// diagnostic will be suppressed.
+  bool isLastDiagnosticIgnored() const {
+    return LastDiagLevel == DiagnosticIDs::Ignored;
+  }
+
   /// \brief Controls whether otherwise-unmapped extension diagnostics are
   /// mapped onto ignore/warning/error. 
   ///
@@ -983,6 +989,10 @@ public:
   bool hasMaxRanges() const {
     return NumRanges == DiagnosticsEngine::MaxRanges;
   }
+
+  bool hasMaxFixItHints() const {
+    return NumFixits == DiagnosticsEngine::MaxFixItHints;
+  }
 };
 
 inline const DiagnosticBuilder &operator<<(const DiagnosticBuilder &DB,
@@ -1212,7 +1222,7 @@ public:
   ~StoredDiagnostic();
 
   /// \brief Evaluates true when this object stores a diagnostic.
-  operator bool() const { return Message.size() > 0; }
+  LLVM_EXPLICIT operator bool() const { return Message.size() > 0; }
 
   unsigned getID() const { return ID; }
   DiagnosticsEngine::Level getLevel() const { return Level; }
diff --git a/include/clang/Basic/Diagnostic.td b/include/clang/Basic/Diagnostic.td
index 6dfecdcb7972..2616548bc009 100644
--- a/include/clang/Basic/Diagnostic.td
+++ b/include/clang/Basic/Diagnostic.td
@@ -26,6 +26,13 @@ def CLASS_WARNING   : DiagClass;
 def CLASS_EXTENSION : DiagClass;
 def CLASS_ERROR     : DiagClass;
 
+// Responses to a diagnostic in a SFINAE context.
+class SFINAEResponse;
+def SFINAE_SubstitutionFailure : SFINAEResponse;
+def SFINAE_Suppress            : SFINAEResponse;
+def SFINAE_Report              : SFINAEResponse;
+def SFINAE_AccessControl       : SFINAEResponse;
+
 // Diagnostic Categories.  These can be applied to groups or individual
 // diagnostics to specify a category.
 class DiagCategory<string Name> {
@@ -52,19 +59,30 @@ include "DiagnosticGroups.td"
 // All diagnostics emitted by the compiler are an indirect subclass of this.
 class Diagnostic<string text, DiagClass DC, DiagMapping defaultmapping> {
   /// Component is specified by the file with a big let directive.
-  string      Component = ?;
-  string      Text = text;
-  DiagClass   Class = DC;
-  bit         SFINAE = 1;
-  bit         AccessControl = 0;
-  bit         WarningNoWerror = 0;
-  bit         WarningShowInSystemHeader = 0;
-  DiagMapping DefaultMapping = defaultmapping;
-  DiagGroup   Group;
-  string      CategoryName = "";
+  string         Component = ?;
+  string         Text = text;
+  DiagClass      Class = DC;
+  SFINAEResponse SFINAE = SFINAE_Suppress;
+  bit            AccessControl = 0;
+  bit            WarningNoWerror = 0;
+  bit            WarningShowInSystemHeader = 0;
+  DiagMapping    DefaultMapping = defaultmapping;
+  DiagGroup      Group;
+  string         CategoryName = "";
+}
+
+class SFINAEFailure {
+  SFINAEResponse SFINAE = SFINAE_SubstitutionFailure;
+}
+class NoSFINAE {
+  SFINAEResponse SFINAE = SFINAE_Report;
+}
+class AccessControl {
+  SFINAEResponse SFINAE = SFINAE_AccessControl;
 }
 
-class Error<string str>     : Diagnostic<str, CLASS_ERROR, MAP_ERROR>;
+// FIXME: ExtWarn and Extension should also be SFINAEFailure by default.
+class Error<string str>     : Diagnostic<str, CLASS_ERROR, MAP_ERROR>, SFINAEFailure;
 class Warning<string str>   : Diagnostic<str, CLASS_WARNING, MAP_WARNING>;
 class Extension<string str> : Diagnostic<str, CLASS_EXTENSION, MAP_IGNORE>;
 class ExtWarn<string str>   : Diagnostic<str, CLASS_EXTENSION, MAP_WARNING>;
@@ -82,9 +100,6 @@ class DefaultWarnShowInSystemHeader {
   bit WarningShowInSystemHeader = 1;
 }
 
-class NoSFINAE { bit SFINAE = 0; }
-class AccessControl { bit AccessControl = 1; }
-
 // Definitions for Diagnostics.
 include "DiagnosticASTKinds.td"
 include "DiagnosticAnalysisKinds.td"
diff --git a/include/clang/Basic/DiagnosticASTKinds.td b/include/clang/Basic/DiagnosticASTKinds.td
index c69f85f18d3d..113e56490520 100644
--- a/include/clang/Basic/DiagnosticASTKinds.td
+++ b/include/clang/Basic/DiagnosticASTKinds.td
@@ -38,12 +38,16 @@ def note_constexpr_nonliteral : Note<
 def note_constexpr_non_global : Note<
   "%select{pointer|reference}0 to %select{|subobject of }1"
   "%select{temporary|%3}2 is not a constant expression">;
+def note_constexpr_uninitialized : Note<
+  "%select{|sub}0object of type %1 is not initialized">;
 def note_constexpr_array_index : Note<"cannot refer to element %0 of "
   "%select{array of %2 elements|non-array object}1 in a constant expression">;
 def note_constexpr_float_arithmetic : Note<
   "floating point arithmetic produces %select{an infinity|a NaN}0">;
 def note_constexpr_pointer_subtraction_not_same_array : Note<
   "subtracted pointers are not elements of the same array">;
+def note_constexpr_pointer_subtraction_zero_size : Note<
+  "subtraction of pointers to type %0 of zero size">;
 def note_constexpr_pointer_comparison_base_classes : Note<
   "comparison of addresses of subobjects of different base classes "
   "has unspecified value">;
@@ -83,12 +87,17 @@ def note_constexpr_depth_limit_exceeded : Note<
   "constexpr evaluation exceeded maximum depth of %0 calls">;
 def note_constexpr_call_limit_exceeded : Note<
   "constexpr evaluation hit maximum call limit">;
+def note_constexpr_step_limit_exceeded : Note<
+  "constexpr evaluation hit maximum step limit; possible infinite loop?">;
 def note_constexpr_lifetime_ended : Note<
   "%select{read of|assignment to|increment of|decrement of}0 "
   "%select{temporary|variable}1 whose lifetime has ended">;
 def note_constexpr_access_uninit : Note<
   "%select{read of|assignment to|increment of|decrement of}0 "
   "object outside its lifetime is not allowed in a constant expression">;
+def note_constexpr_use_uninit_reference : Note<
+  "use of reference outside its lifetime "
+  "is not allowed in a constant expression">;
 def note_constexpr_modify_const_type : Note<
   "modification of object of const-qualified type %0 is not allowed "
   "in a constant expression">;
@@ -115,9 +124,16 @@ def note_constexpr_access_inactive_union_member : Note<
   "%select{read of|assignment to|increment of|decrement of}0 "
   "member %1 of union with %select{active member %3|no active member}2 "
   "is not allowed in a constant expression">;
+def note_constexpr_access_static_temporary : Note<
+  "%select{read of|assignment to|increment of|decrement of}0 temporary "
+  "is not allowed in a constant expression outside the expression that "
+  "created the temporary">;
 def note_constexpr_modify_global : Note<
   "a constant expression cannot modify an object that is visible outside "
   "that expression">;
+def note_constexpr_stmt_expr_unsupported : Note<
+  "this use of statement expressions is not supported in a "
+  "constant expression">;
 def note_constexpr_calls_suppressed : Note<
   "(skipping %0 call%s0 in backtrace; use -fconstexpr-backtrace-limit=0 to "
   "see all)">;
diff --git a/include/clang/Basic/DiagnosticCommentKinds.td b/include/clang/Basic/DiagnosticCommentKinds.td
index c913e31ebad1..49781fec9a9c 100644
--- a/include/clang/Basic/DiagnosticCommentKinds.td
+++ b/include/clang/Basic/DiagnosticCommentKinds.td
@@ -160,5 +160,9 @@ def warn_unknown_comment_command_name : Warning<
   "unknown command tag name">,
   InGroup<DocumentationUnknownCommand>, DefaultIgnore;
 
+def warn_correct_comment_command_name : Warning<
+  "unknown command tag name '%0'; did you mean '%1'?">,
+  InGroup<Documentation>, DefaultIgnore;
+
 } // end of documentation issue category
 } // end of AST component
diff --git a/include/clang/Basic/DiagnosticCommonKinds.td b/include/clang/Basic/DiagnosticCommonKinds.td
index 7ff6ae13b4ef..c54bafc07fe8 100644
--- a/include/clang/Basic/DiagnosticCommonKinds.td
+++ b/include/clang/Basic/DiagnosticCommonKinds.td
@@ -37,6 +37,9 @@ def note_possibility : Note<"one possibility">;
 def note_also_found : Note<"also found">;
 
 // Parse && Lex
+
+let CategoryName = "Lexical or Preprocessor Issue" in {
+
 def err_expected_colon : Error<"expected ':'">;
 def err_expected_colon_after_setter_name : Error<
   "method name referenced in property setter attribute "
@@ -51,7 +54,12 @@ def err_invalid_character_udl : Error<
 def err_invalid_numeric_udl : Error<
   "numeric literal with user-defined suffix cannot be used here">;
 
+}
+
 // Parse && Sema
+
+let CategoryName = "Parse Issue" in {
+
 def err_param_redefinition : Error<"redefinition of parameter %0">;
 def warn_method_param_redefinition : Warning<"redefinition of method parameter %0">;
 def warn_method_param_declaration : Warning<"redeclaration of method parameter %0">,
@@ -79,6 +87,8 @@ def err_attribute_not_type_attr : Error<
   "%0 attribute cannot be applied to types">;
 def err_enum_template : Error<"enumeration cannot be a template">;
 
+}
+
 // Sema && Lex
 def ext_c99_longlong : Extension<
   "'long long' is an extension when C99 mode is not enabled">,
@@ -89,10 +99,10 @@ def ext_cxx11_longlong : Extension<
 def warn_cxx98_compat_longlong : Warning<
   "'long long' is incompatible with C++98">,
   InGroup<CXX98CompatPedantic>, DefaultIgnore;
-def warn_integer_too_large : Warning<
-  "integer constant is too large for its type">;
+def err_integer_too_large : Error<
+  "integer constant is larger than the largest unsigned integer type">;
 def warn_integer_too_large_for_signed : Warning<
-  "integer constant is so large that it is unsigned">;
+  "integer constant is larger than the largest signed integer type">;
 
 // Sema && AST
 def note_invalid_subexpr_in_const_expr : Note<
@@ -105,7 +115,9 @@ def err_target_unknown_triple : Error<
 def err_target_unknown_cpu : Error<"unknown target CPU '%0'">;
 def err_target_unknown_abi : Error<"unknown target ABI '%0'">;
 def err_target_unknown_cxxabi : Error<"unknown C++ ABI '%0'">;
-def err_target_invalid_feature : Error<"invalid target feature '%0'">;
+def err_target_unknown_fpmath : Error<"unknown FP unit '%0'">;
+def err_target_unsupported_fpmath : Error<
+    "the '%0' unit is not supported with this instruction set">;
 
 // Source manager
 def err_cannot_open_file : Error<"cannot open file '%0': %1">, DefaultFatal;
diff --git a/include/clang/Basic/DiagnosticDriverKinds.td b/include/clang/Basic/DiagnosticDriverKinds.td
index db457b15369d..b48980778c46 100644
--- a/include/clang/Basic/DiagnosticDriverKinds.td
+++ b/include/clang/Basic/DiagnosticDriverKinds.td
@@ -26,8 +26,6 @@ def err_drv_unsupported_rtlib_for_platform : Error<
   "unsupported runtime library '%0' for platform '%1'">;
 def err_drv_invalid_stdlib_name : Error<
   "invalid library name in argument '%0'">;
-def err_drv_invalid_opt_with_multiple_archs : Error<
-  "option '%0' cannot be used with multiple -arch options">;
 def err_drv_invalid_output_with_multiple_archs : Error<
   "cannot use '%0' output with multiple -arch options">;
 def err_drv_no_input_files : Error<"no input files">;
@@ -35,8 +33,10 @@ def err_drv_use_of_Z_option : Error<
   "unsupported use of internal gcc -Z option '%0'">;
 def err_drv_output_argument_with_multiple_files : Error<
   "cannot specify -o when generating multiple output files">;
-def err_no_external_windows_assembler : Error<
-  "there is no external assembler we can use on windows">;
+def err_drv_out_file_argument_with_multiple_sources : Error<
+  "cannot specify '%0%1' when compiling multiple source files">;
+def err_no_external_assembler : Error<
+  "there is no external assembler that can be used on this platform">;
 def err_drv_unable_to_remove_file : Error<
   "unable to remove file: %0">;
 def err_drv_command_failure : Error<
@@ -77,8 +77,8 @@ def err_drv_invalid_mfloat_abi : Error<
   "invalid float ABI '%0'">;
 def err_drv_invalid_libcxx_deployment : Error<
   "invalid deployment target for -stdlib=libc++ (requires %0 or later)">;
-def err_drv_invalid_feature : Error<
-  "invalid feature '%0' for CPU '%1'">;
+def err_drv_malformed_sanitizer_blacklist : Error<
+  "malformed sanitizer blacklist: '%0'">;
 
 def err_drv_I_dash_not_supported : Error<
   "'%0' not supported, please use -iquote instead">;
@@ -107,7 +107,14 @@ def err_drv_mg_requires_m_or_mm : Error<
   "option '-MG' requires '-M' or '-MM'">;
 def err_drv_unknown_objc_runtime : Error<
   "unknown or ill-formed Objective-C runtime '%0'">;
+def err_drv_emit_llvm_link : Error<
+   "-emit-llvm cannot be used when linking">;
+def err_drv_unknown_toolchain : Error<
+  "cannot recognize the type of the toolchain">;
 
+def warn_O4_is_O3 : Warning<"-O4 is equivalent to -O3">, InGroup<Deprecated>;
+def warn_drv_optimization_value : Warning<"optimization level '%0' is unsupported; using '%1%2' instead">,
+  InGroup<InvalidCommandLineArgument>;
 def warn_c_kext : Warning<
   "ignoring -fapple-kext which is valid for C++ and Objective-C++ only">;
 def warn_drv_input_file_unused : Warning<
@@ -135,6 +142,9 @@ def warn_drv_assuming_mfloat_abi_is : Warning<
   "unknown platform, assuming -mfloat-abi=%0">;
 def warn_ignoring_ftabstop_value : Warning<
   "ignoring invalid -ftabstop value '%0', using default value %1">;
+def warn_drv_overriding_flag_option : Warning<
+  "overriding '%0' option with '%1'">,
+  InGroup<DiagGroup<"overriding-t-option">>;
 def warn_drv_treating_input_as_cxx : Warning<
   "treating '%0' input as '%1' when in C++ mode, this behavior is deprecated">,
   InGroup<Deprecated>;
@@ -147,6 +157,8 @@ def warn_missing_sysroot : Warning<"no such sysroot directory: '%0'">,
 
 def note_drv_command_failed_diag_msg : Note<
   "diagnostic msg: %0">;
+def note_drv_t_option_is_global :
+  Note<"The last /TC or /TP option takes precedence over earlier instances">;
   
 def err_analyzer_config_no_value : Error<
   "analyzer-config option '%0' has a key but no value">;
diff --git a/include/clang/Basic/DiagnosticFrontendKinds.td b/include/clang/Basic/DiagnosticFrontendKinds.td
index f05fb9be82cc..bcf3c41cdb64 100644
--- a/include/clang/Basic/DiagnosticFrontendKinds.td
+++ b/include/clang/Basic/DiagnosticFrontendKinds.td
@@ -11,7 +11,7 @@ let Component = "Frontend" in {
 
 def err_fe_error_opening : Error<"error opening '%0': %1">;
 def err_fe_error_reading : Error<"error reading '%0'">;
-def err_fe_error_reading_stdin : Error<"error reading stdin">;
+def err_fe_error_reading_stdin : Error<"error reading stdin: %0">;
 def err_fe_error_backend : Error<"error in backend: %0">, DefaultFatal;
 
 // Error generated by the backend.
@@ -136,9 +136,8 @@ def err_no_submodule_suggest : Error<
   "no submodule named %0 in module '%1'; did you mean '%2'?">;
 def warn_missing_submodule : Warning<"missing submodule '%0'">,
   InGroup<IncompleteUmbrella>;
-def err_module_map_temp_file : Error<
-  "unable to write temporary module map file '%0'">, DefaultFatal;
-def err_module_unavailable : Error<"module '%0' requires feature '%1'">;
+def err_module_unavailable : Error<
+  "module '%0' %select{is incompatible with|requires}1 feature '%2'">;
 def warn_module_config_macro_undef : Warning<
   "%select{definition|#undef}0 of configuration macro '%1' has no effect on "
   "the import of '%2'; pass '%select{-D%1=...|-U%1}0' on the command line "
diff --git a/include/clang/Basic/DiagnosticGroups.td b/include/clang/Basic/DiagnosticGroups.td
index d5f777d3d715..b0d02164ebc4 100644
--- a/include/clang/Basic/DiagnosticGroups.td
+++ b/include/clang/Basic/DiagnosticGroups.td
@@ -21,12 +21,16 @@ def : DiagGroup<"abi">;
 def : DiagGroup<"address">;
 def AddressOfTemporary : DiagGroup<"address-of-temporary">;
 def : DiagGroup<"aggregate-return">;
+def GNUAlignofExpression : DiagGroup<"gnu-alignof-expression">;
 def AmbigMemberTemplate : DiagGroup<"ambiguous-member-template">;
+def GNUAnonymousStruct : DiagGroup<"gnu-anonymous-struct">;
 def ArrayBounds : DiagGroup<"array-bounds">;
 def ArrayBoundsPointerArithmetic : DiagGroup<"array-bounds-pointer-arithmetic">;
 def Availability : DiagGroup<"availability">;
 def Section : DiagGroup<"section">;
 def AutoImport : DiagGroup<"auto-import">;
+def GNUBinaryLiteral : DiagGroup<"gnu-binary-literal">;
+def GNUCompoundLiteralInitializer : DiagGroup<"gnu-compound-literal-initializer">;
 def BitFieldConstantConversion : DiagGroup<"bitfield-constant-conversion">;
 def ConstantConversion :
   DiagGroup<"constant-conversion", [ BitFieldConstantConversion ] >;
@@ -45,23 +49,39 @@ def BuiltinMacroRedefined : DiagGroup<"builtin-macro-redefined">;
 def BuiltinRequiresHeader : DiagGroup<"builtin-requires-header">;
 def C99Compat : DiagGroup<"c99-compat">;
 def CXXCompat: DiagGroup<"c++-compat">;
+def ExternCCompat : DiagGroup<"extern-c-compat">;
+def KeywordCompat : DiagGroup<"keyword-compat">;
+def GNUCaseRange : DiagGroup<"gnu-case-range">;
 def CastAlign : DiagGroup<"cast-align">;
 def : DiagGroup<"cast-qual">;
 def : DiagGroup<"char-align">;
 def Comment : DiagGroup<"comment">;
+def GNUComplexInteger : DiagGroup<"gnu-complex-integer">;
+def GNUConditionalOmittedOperand : DiagGroup<"gnu-conditional-omitted-operand">;
 def ConfigMacros : DiagGroup<"config-macros">;
 def : DiagGroup<"ctor-dtor-privacy">;
 def GNUDesignator : DiagGroup<"gnu-designator">;
+def GNUStringLiteralOperatorTemplate :
+  DiagGroup<"gnu-string-literal-operator-template">;
 
 def DeleteNonVirtualDtor : DiagGroup<"delete-non-virtual-dtor">;
 def AbstractFinalClass : DiagGroup<"abstract-final-class">;
 
-def DeprecatedDeclarations : DiagGroup<"deprecated-declarations">;
-def DeprecatedWritableStr : DiagGroup<"deprecated-writable-strings">;
-def Deprecated : DiagGroup<"deprecated", [ DeprecatedDeclarations] >,
-                 DiagCategory<"Deprecations">;
+def CXX11CompatDeprecatedWritableStr :
+  DiagGroup<"c++11-compat-deprecated-writable-strings">;
 
+def DeprecatedDeclarations : DiagGroup<"deprecated-declarations">;
 def DeprecatedImplementations :DiagGroup<"deprecated-implementations">;
+def DeprecatedIncrementBool : DiagGroup<"deprecated-increment-bool">;
+def DeprecatedRegister : DiagGroup<"deprecated-register">;
+def DeprecatedWritableStr : DiagGroup<"deprecated-writable-strings",
+                                      [CXX11CompatDeprecatedWritableStr]>;
+// FIXME: Why are DeprecatedImplementations and DeprecatedWritableStr
+// not in this group?
+def Deprecated : DiagGroup<"deprecated", [DeprecatedDeclarations,
+                                          DeprecatedIncrementBool,
+                                          DeprecatedRegister]>,
+                 DiagCategory<"Deprecations">;
 
 def : DiagGroup<"disabled-optimization">;
 def : DiagGroup<"discard-qual">;
@@ -77,16 +97,21 @@ def Documentation : DiagGroup<"documentation",
                                DocumentationDeprecatedSync]>;
 
 def EmptyBody : DiagGroup<"empty-body">;
+def GNUEmptyInitializer : DiagGroup<"gnu-empty-initializer">;
+def GNUEmptyStruct : DiagGroup<"gnu-empty-struct">;
 def ExtraTokens : DiagGroup<"extra-tokens">;
 def CXX11ExtraSemi : DiagGroup<"c++11-extra-semi">;
 def ExtraSemi : DiagGroup<"extra-semi", [CXX11ExtraSemi]>;
 
+def GNUFlexibleArrayInitializer : DiagGroup<"gnu-flexible-array-initializer">;
+def GNUFlexibleArrayUnionMember : DiagGroup<"gnu-flexible-array-union-member">;
+def GNUFoldingConstant : DiagGroup<"gnu-folding-constant">;
 def FormatExtraArgs : DiagGroup<"format-extra-args">;
 def FormatZeroLength : DiagGroup<"format-zero-length">;
 
 // Warnings for C++1y code which is not compatible with prior C++ standards.
-def CXXPre1yCompat : DiagGroup<"cxx98-cxx11-compat">;
-def CXXPre1yCompatPedantic : DiagGroup<"cxx98-cxx11-compat-pedantic",
+def CXXPre1yCompat : DiagGroup<"c++98-c++11-compat">;
+def CXXPre1yCompatPedantic : DiagGroup<"c++98-c++11-compat-pedantic",
                                        [CXXPre1yCompat]>;
 
 def CXX98CompatBindToTemporaryCopy :
@@ -123,6 +148,7 @@ def ReservedUserDefinedLiteral :
 def CXX11Compat : DiagGroup<"c++11-compat",
                             [CXX11Narrowing,
                              CXX11CompatReservedUserDefinedLiteral,
+                             CXX11CompatDeprecatedWritableStr,
                              CXXPre1yCompat]>;
 def : DiagGroup<"c++0x-compat", [CXX11Compat]>;
 def CXX11CompatPedantic : DiagGroup<"c++11-compat-pedantic",
@@ -136,11 +162,13 @@ def FourByteMultiChar : DiagGroup<"four-char-constants">;
 def GlobalConstructors : DiagGroup<"global-constructors">;
 def BitwiseOpParentheses: DiagGroup<"bitwise-op-parentheses">;
 def LogicalOpParentheses: DiagGroup<"logical-op-parentheses">;
+def LogicalNotParentheses: DiagGroup<"logical-not-parentheses">;
 def ShiftOpParentheses: DiagGroup<"shift-op-parentheses">;
 def OverloadedShiftOpParentheses: DiagGroup<"overloaded-shift-op-parentheses">;
 def DanglingElse: DiagGroup<"dangling-else">;
 def DanglingField : DiagGroup<"dangling-field">;
 def DistributedObjectModifiers : DiagGroup<"distributed-object-modifiers">;
+def GNUImaginaryConstant : DiagGroup<"gnu-imaginary-constant">;
 def IgnoredQualifiers : DiagGroup<"ignored-qualifiers">;
 def : DiagGroup<"import">;
 def IncompatiblePointerTypesDiscardsQualifiers 
@@ -149,15 +177,18 @@ def IncompatiblePointerTypes
   : DiagGroup<"incompatible-pointer-types",
     [IncompatiblePointerTypesDiscardsQualifiers]>;
 def IncompleteUmbrella : DiagGroup<"incomplete-umbrella">;
+def IncompleteModule : DiagGroup<"incomplete-module", [IncompleteUmbrella]>;
 def InvalidNoreturn : DiagGroup<"invalid-noreturn">;
 def InvalidSourceEncoding : DiagGroup<"invalid-source-encoding">;
 def KNRPromotedParameter : DiagGroup<"knr-promoted-parameter">;
 def : DiagGroup<"init-self">;
 def : DiagGroup<"inline">;
 def : DiagGroup<"invalid-pch">;
+def GNULabelsAsValue : DiagGroup<"gnu-label-as-value">;
 def LiteralRange : DiagGroup<"literal-range">;
 def LocalTypeTemplateArgs : DiagGroup<"local-type-template-args",
                                       [CXX98CompatLocalTypeTemplateArgs]>;
+def LoopAnalysis : DiagGroup<"loop-analysis">;
 def MalformedWarningCheck : DiagGroup<"malformed-warning-check">;
 def Main : DiagGroup<"main">;
 def MainReturnType : DiagGroup<"main-return-type">;
@@ -176,6 +207,7 @@ def MismatchedReturnTypes : DiagGroup<"mismatched-return-types">;
 def MismatchedTags : DiagGroup<"mismatched-tags">;
 def MissingFieldInitializers : DiagGroup<"missing-field-initializers">;
 def ModuleConflict : DiagGroup<"module-conflict">;
+def NewlineEOF : DiagGroup<"newline-eof">;
 def NullArithmetic : DiagGroup<"null-arithmetic">;
 def NullCharacter : DiagGroup<"null-character">;
 def NullDereference : DiagGroup<"null-dereference">;
@@ -202,7 +234,10 @@ def ObjCPropertyNoAttribute : DiagGroup<"objc-property-no-attribute">;
 def ObjCMissingSuperCalls : DiagGroup<"objc-missing-super-calls">;
 def ObjCRetainBlockProperty : DiagGroup<"objc-noncopy-retain-block-property">;
 def ObjCReadonlyPropertyHasSetter : DiagGroup<"objc-readonly-with-setter-property">;
+def ObjCInvalidIBOutletProperty : DiagGroup<"invalid-iboutlet">;
 def ObjCRootClass : DiagGroup<"objc-root-class">;
+def ObjCPointerIntrospectPerformSelector : DiagGroup<"deprecated-objc-pointer-introspection-performSelector">;
+def ObjCPointerIntrospect : DiagGroup<"deprecated-objc-pointer-introspection", [ObjCPointerIntrospectPerformSelector]>;
 def DeprecatedObjCIsaUsage : DiagGroup<"deprecated-objc-isa-usage">;
 def Packed : DiagGroup<"packed">;
 def Padded : DiagGroup<"padded">;
@@ -213,6 +248,8 @@ def PoundPragmaMessage : DiagGroup<"#pragma-messages">,
                          DiagCategory<"#pragma message Directive">;
 def : DiagGroup<"pointer-to-int-cast">;
 def : DiagGroup<"redundant-decls">;
+def RedeclaredClassMember : DiagGroup<"redeclared-class-member">;
+def GNURedeclaredEnum : DiagGroup<"gnu-redeclared-enum">;
 def ReturnStackAddress : DiagGroup<"return-stack-address">;
 def ReturnTypeCLinkage : DiagGroup<"return-type-c-linkage">;
 def ReturnType : DiagGroup<"return-type", [ReturnTypeCLinkage]>;
@@ -237,7 +274,9 @@ def StaticInInline : DiagGroup<"static-in-inline">;
 def StaticLocalInInline : DiagGroup<"static-local-in-inline">;
 def GNUStaticFloatInit : DiagGroup<"gnu-static-float-init">;
 def StaticFloatInit : DiagGroup<"static-float-init", [GNUStaticFloatInit]>;
+def GNUStatementExpression : DiagGroup<"gnu-statement-expression">;
 def StringPlusInt : DiagGroup<"string-plus-int">;
+def StringPlusChar : DiagGroup<"string-plus-char">;
 def StrncatSize : DiagGroup<"strncat-size">;
 def TautologicalOutOfRangeCompare : DiagGroup<"tautological-constant-out-of-range-compare">;
 def TautologicalCompare : DiagGroup<"tautological-compare",
@@ -245,6 +284,9 @@ def TautologicalCompare : DiagGroup<"tautological-compare",
 def HeaderHygiene : DiagGroup<"header-hygiene">;
 def DuplicateDeclSpecifier : DiagGroup<"duplicate-decl-specifier">;
 def CompareDistinctPointerType : DiagGroup<"compare-distinct-pointer-types">;
+def GNUUnionCast : DiagGroup<"gnu-union-cast">;
+def GNUVariableSizedTypeNotAtEnd : DiagGroup<"gnu-variable-sized-type-not-at-end">;
+def Varargs : DiagGroup<"varargs">;
 
 def Unsequenced : DiagGroup<"unsequenced">;
 // GCC name for -Wunsequenced
@@ -298,10 +340,12 @@ def UnknownAttributes : DiagGroup<"attributes">;
 def IgnoredAttributes : DiagGroup<"ignored-attributes">;
 def UnnamedTypeTemplateArgs : DiagGroup<"unnamed-type-template-args",
                                         [CXX98CompatUnnamedTypeTemplateArgs]>;
+def UnsupportedFriend : DiagGroup<"unsupported-friend">;
 def UnusedArgument : DiagGroup<"unused-argument">;
 def UnusedSanitizeArgument : DiagGroup<"unused-sanitize-argument">;
 def UnusedCommandLineArgument : DiagGroup<"unused-command-line-argument",
                                           [UnusedSanitizeArgument]>;
+def InvalidCommandLineArgument : DiagGroup<"invalid-command-line-argument">;
 def UnusedComparison : DiagGroup<"unused-comparison">;
 def UnusedExceptionParameter : DiagGroup<"unused-exception-parameter">;
 def UnneededInternalDecl : DiagGroup<"unneeded-internal-declaration">;
@@ -314,7 +358,10 @@ def UnusedLabel : DiagGroup<"unused-label">;
 def UnusedParameter : DiagGroup<"unused-parameter">;
 def UnusedResult : DiagGroup<"unused-result">;
 def UnusedValue : DiagGroup<"unused-value", [UnusedComparison, UnusedResult]>;
-def UnusedVariable : DiagGroup<"unused-variable">;
+def UnusedConstVariable : DiagGroup<"unused-const-variable">;
+def UnusedVariable : DiagGroup<"unused-variable",
+                               [UnusedConstVariable]>;
+def UnusedPropertyIvar :  DiagGroup<"unused-property-ivar">;
 def UsedButMarkedUnused : DiagGroup<"used-but-marked-unused">;
 def UserDefinedLiterals : DiagGroup<"user-defined-literals">;
 def ReadOnlySetterAttrs : DiagGroup<"readonly-setter-attrs">;
@@ -336,7 +383,10 @@ def AutomaticReferenceCounting : DiagGroup<"arc",
 def ARCRepeatedUseOfWeakMaybe : DiagGroup<"arc-maybe-repeated-use-of-weak">;
 def ARCRepeatedUseOfWeak : DiagGroup<"arc-repeated-use-of-weak",
                                      [ARCRepeatedUseOfWeakMaybe]>;
-def Selector : DiagGroup<"selector">;
+def ObjCBridge : DiagGroup<"bridge-cast">;
+
+def SelectorTypeMismatch : DiagGroup<"selector-type-mismatch">;
+def Selector : DiagGroup<"selector", [SelectorTypeMismatch]>;
 def Protocol : DiagGroup<"protocol">;
 def SuperSubClassMismatch : DiagGroup<"super-class-method-mismatch">;
 def OverridingMethodMismatch : DiagGroup<"overriding-method-mismatch">;
@@ -348,6 +398,8 @@ def VLAExtension : DiagGroup<"vla-extension">;
 def VolatileRegisterVar : DiagGroup<"volatile-register-var">;
 def Visibility : DiagGroup<"visibility">;
 def ZeroLengthArray : DiagGroup<"zero-length-array">;
+def GNUZeroLineDirective : DiagGroup<"gnu-zero-line-directive">;
+def GNUZeroVariadicMacroArguments : DiagGroup<"gnu-zero-variadic-macro-arguments">;
 
 // GCC calls -Wdeprecated-writable-strings -Wwrite-strings.
 def GCCWriteStrings : DiagGroup<"write-strings" , [DeprecatedWritableStr]>;
@@ -365,6 +417,7 @@ def DuplicateArgDecl : DiagGroup<"duplicate-method-arg">;
 def ParenthesesOnEquality : DiagGroup<"parentheses-equality">;
 def Parentheses : DiagGroup<"parentheses",
                             [LogicalOpParentheses,
+                             LogicalNotParentheses,
                              BitwiseOpParentheses,
                              ShiftOpParentheses,
                              OverloadedShiftOpParentheses,
@@ -396,7 +449,7 @@ def Unused : DiagGroup<"unused",
                         // UnusedParameter, (matches GCC's behavior)
                         // UnusedMemberFunction, (clean-up llvm before enabling)
                         UnusedPrivateField,
-                        UnusedValue, UnusedVariable]>,
+                        UnusedValue, UnusedVariable, UnusedPropertyIvar]>,
                         DiagCategory<"Unused Entity Issue">;
 
 // Format settings.
@@ -414,7 +467,9 @@ def Format2 : DiagGroup<"format=2",
 
 def TypeSafety : DiagGroup<"type-safety">;
 
-def IntToPointerCast : DiagGroup<"int-to-pointer-cast">;
+def IntToVoidPointerCast : DiagGroup<"int-to-void-pointer-cast">;
+def IntToPointerCast : DiagGroup<"int-to-pointer-cast",
+                                 [IntToVoidPointerCast]>;
 
 def Extra : DiagGroup<"extra", [
     MissingFieldInitializers,
@@ -449,7 +504,8 @@ def Most : DiagGroup<"most", [
     ObjCMissingSuperCalls,
     OverloadedVirtual,
     PrivateExtern,
-    SelTypeCast
+    SelTypeCast,
+    ExternCCompat
  ]>;
 
 // Thread Safety warnings 
@@ -462,6 +518,9 @@ def ThreadSafety : DiagGroup<"thread-safety",
                               ThreadSafetyPrecise]>;
 def ThreadSafetyBeta : DiagGroup<"thread-safety-beta">;
 
+// Uniqueness Analysis warnings
+def Consumed       : DiagGroup<"consumed">;
+
 // Note that putting warnings in -Wall will not disable them by default. If a
 // warning should be active _only_ when -Wall is passed in, mark it as
 // DefaultIgnore in addition to putting it here.
@@ -472,7 +531,7 @@ def Pedantic : DiagGroup<"pedantic">;
 
 // Aliases.
 def : DiagGroup<"", [Extra]>;                   // -W = -Wextra
-def : DiagGroup<"endif-labels", [ExtraTokens]>; // -Wendif-labels=-Wendif-tokens
+def : DiagGroup<"endif-labels", [ExtraTokens]>; // -Wendif-labels=-Wextra-tokens
 def : DiagGroup<"comments", [Comment]>;         // -Wcomments = -Wcomment
 def : DiagGroup<"conversion-null",
                 [NullConversion]>; // -Wconversion-null = -Wnull-conversion
@@ -507,8 +566,20 @@ def C11 : DiagGroup<"c11-extensions">;
 def C99 : DiagGroup<"c99-extensions">;
 
 // A warning group for warnings about GCC extensions.
-def GNU : DiagGroup<"gnu", [GNUDesignator, VLAExtension,
-                            ZeroLengthArray, GNUStaticFloatInit]>;
+def GNU : DiagGroup<"gnu", [GNUAlignofExpression, GNUAnonymousStruct,
+                            GNUBinaryLiteral, GNUCaseRange,
+                            GNUComplexInteger, GNUCompoundLiteralInitializer,
+                            GNUConditionalOmittedOperand, GNUDesignator,
+                            GNUEmptyInitializer, GNUEmptyStruct,
+                            VLAExtension, GNUFlexibleArrayInitializer,
+                            GNUFlexibleArrayUnionMember, GNUFoldingConstant,
+                            GNUImaginaryConstant, GNULabelsAsValue,
+                            RedeclaredClassMember, GNURedeclaredEnum,
+                            GNUStatementExpression, GNUStaticFloatInit,
+                            GNUStringLiteralOperatorTemplate,
+                            GNUUnionCast, GNUVariableSizedTypeNotAtEnd,
+                            ZeroLengthArray, GNUZeroLineDirective,
+                            GNUZeroVariadicMacroArguments]>;
 // A warning group for warnings about code that clang accepts but gcc doesn't.
 def GccCompat : DiagGroup<"gcc-compat">;
 
@@ -532,10 +603,13 @@ def ObjCCocoaAPI : DiagGroup<"objc-cocoa-api", [
   ]>;
 
 def ObjCStringComparison : DiagGroup<"objc-string-compare">;
+def ObjCStringConcatenation : DiagGroup<"objc-string-concatenation">;
 def ObjCLiteralComparison : DiagGroup<"objc-literal-compare", [
     ObjCStringComparison
   ]>;
 
+def ObjCLiteralMissingAtSign : DiagGroup<"objc-literal-missing-atsign">;
+
 // Inline ASM warnings.
 def ASMOperandWidths : DiagGroup<"asm-operand-widths">;
 def ASM : DiagGroup<"asm", [
diff --git a/include/clang/Basic/DiagnosticIDs.h b/include/clang/Basic/DiagnosticIDs.h
index d35b90742496..56e30fbda7b0 100644
--- a/include/clang/Basic/DiagnosticIDs.h
+++ b/include/clang/Basic/DiagnosticIDs.h
@@ -22,13 +22,13 @@
 namespace clang {
   class DiagnosticsEngine;
   class SourceLocation;
-  struct WarningOption;
 
   // Import the diagnostic enums themselves.
   namespace diag {
     // Start position for diagnostics.
     enum {
-      DIAG_START_DRIVER        =                               300,
+      DIAG_START_COMMON        =                                 0,
+      DIAG_START_DRIVER        = DIAG_START_COMMON          +  300,
       DIAG_START_FRONTEND      = DIAG_START_DRIVER          +  100,
       DIAG_START_SERIALIZATION = DIAG_START_FRONTEND        +  100,
       DIAG_START_LEX           = DIAG_START_SERIALIZATION   +  120,
@@ -48,7 +48,8 @@ namespace clang {
     // Get typedefs for common diagnostics.
     enum {
 #define DIAG(ENUM,FLAGS,DEFAULT_MAPPING,DESC,GROUP,\
-             SFINAE,ACCESS,CATEGORY,NOWERROR,SHOWINSYSHEADER) ENUM,
+             SFINAE,CATEGORY,NOWERROR,SHOWINSYSHEADER) ENUM,
+#define COMMONSTART
 #include "clang/Basic/DiagnosticCommonKinds.inc"
       NUM_BUILTIN_COMMON_DIAGNOSTICS
 #undef DIAG
@@ -105,11 +106,12 @@ public:
   void setNoErrorAsFatal(bool Value) { HasNoErrorAsFatal = Value; }
 };
 
-/// \brief Used for handling and querying diagnostic IDs. Can be used and shared
-/// by multiple Diagnostics for multiple translation units.
+/// \brief Used for handling and querying diagnostic IDs.
+///
+/// Can be used and shared by multiple Diagnostics for multiple translation units.
 class DiagnosticIDs : public RefCountedBase<DiagnosticIDs> {
 public:
-  /// Level The level of the diagnostic, after it has been through mapping.
+  /// \brief The level of the diagnostic, after it has been through mapping.
   enum Level {
     Ignored, Note, Warning, Error, Fatal
   };
@@ -224,8 +226,8 @@ public:
 
   /// \brief Get the set of all diagnostic IDs in the group with the given name.
   ///
-  /// \param Diags [out] - On return, the diagnostics in the group.
-  /// \returns True if the given group is unknown, false otherwise.
+  /// \param[out] Diags - On return, the diagnostics in the group.
+  /// \returns \c true if the given group is unknown, \c false otherwise.
   bool getDiagnosticsInGroup(StringRef Group,
                              SmallVectorImpl<diag::kind> &Diags) const;
 
@@ -237,18 +239,14 @@ public:
   static StringRef getNearestWarningOption(StringRef Group);
 
 private:
-  /// \brief Get the set of all diagnostic IDs in the given group.
-  ///
-  /// \param Diags [out] - On return, the diagnostics in the group.
-  void getDiagnosticsInGroup(const WarningOption *Group,
-                             SmallVectorImpl<diag::kind> &Diags) const;
- 
-  /// \brief Based on the way the client configured the DiagnosticsEngine
-  /// object, classify the specified diagnostic ID into a Level, consumable by
+  /// \brief Classify the specified diagnostic ID into a Level, consumable by
   /// the DiagnosticClient.
+  /// 
+  /// The classification is based on the way the client configured the
+  /// DiagnosticsEngine object.
   ///
-  /// \param Loc The source location we are interested in finding out the
-  /// diagnostic state. Can be null in order to query the latest state.
+  /// \param Loc The source location for which we are interested in finding out
+  /// the diagnostic state. Can be null in order to query the latest state.
   DiagnosticIDs::Level getDiagnosticLevel(unsigned DiagID, SourceLocation Loc,
                                           const DiagnosticsEngine &Diag) const;
 
diff --git a/include/clang/Basic/DiagnosticLexKinds.td b/include/clang/Basic/DiagnosticLexKinds.td
index 2c16000d339d..871f5f65447d 100644
--- a/include/clang/Basic/DiagnosticLexKinds.td
+++ b/include/clang/Basic/DiagnosticLexKinds.td
@@ -47,7 +47,9 @@ def ext_line_comment : Extension<
   "// comments are not allowed in this language">,
   InGroup<Comment>;
 def ext_no_newline_eof : Extension<"no newline at end of file">, 
-  InGroup<DiagGroup<"newline-eof">>;
+  InGroup<NewlineEOF>;
+def warn_no_newline_eof : Warning<"no newline at end of file">,
+  InGroup<NewlineEOF>, DefaultIgnore;
 
 def warn_cxx98_compat_no_newline_eof : Warning<
   "C++98 requires newline at end of file">,
@@ -157,6 +159,11 @@ def err_invalid_suffix_integer_constant : Error<
   "invalid suffix '%0' on integer constant">;
 def err_invalid_suffix_float_constant : Error<
   "invalid suffix '%0' on floating constant">;
+def warn_cxx11_compat_digit_separator : Warning<
+  "digit separators are incompatible with C++ standards before C++1y">,
+  InGroup<CXXPre1yCompat>, DefaultIgnore;
+def err_digit_separator_not_between_digits : Error<
+  "digit separator cannot appear at %select{start|end}0 of digit sequence">;
 def warn_extraneous_char_constant : Warning<
   "extraneous characters in character constant ignored">;
 def warn_char_constant_too_large : Warning<
@@ -165,7 +172,7 @@ def err_multichar_utf_character_literal : Error<
   "Unicode character literals may not contain multiple characters">;
 def err_exponent_has_no_digits : Error<"exponent has no digits">;
 def ext_imaginary_constant : Extension<
-  "imaginary constants are a GNU extension">, InGroup<GNU>;
+  "imaginary constants are a GNU extension">, InGroup<GNUImaginaryConstant>;
 def err_hexconstant_requires_exponent : Error<
   "hexadecimal floating constants require an exponent">;
 def err_hexconstant_requires_digits : Error<
@@ -173,15 +180,15 @@ def err_hexconstant_requires_digits : Error<
 def ext_hexconstant_invalid : Extension<
   "hexadecimal floating constants are a C99 feature">, InGroup<C99>;
 def ext_binary_literal : Extension<
-  "binary integer literals are a GNU extension">, InGroup<GNU>;
+  "binary integer literals are a GNU extension">, InGroup<GNUBinaryLiteral>;
 def ext_binary_literal_cxx1y : Extension<
   "binary integer literals are a C++1y extension">, InGroup<CXX1y>;
 def warn_cxx11_compat_binary_literal : Warning<
   "binary integer literals are incompatible with C++ standards before C++1y">,
   InGroup<CXXPre1yCompatPedantic>, DefaultIgnore;
 def err_pascal_string_too_long : Error<"Pascal string is too long">;
-def warn_octal_escape_too_large : ExtWarn<"octal escape sequence out of range">;
-def warn_hex_escape_too_large : ExtWarn<"hex escape sequence out of range">;
+def err_octal_escape_too_large : Error<"octal escape sequence out of range">;
+def err_hex_escape_too_large : Error<"hex escape sequence out of range">;
 def ext_string_too_long : Extension<"string literal of length %0 exceeds "
   "maximum length %1 that %select{C90|ISO C99|C++}2 compilers are required to "
   "support">, InGroup<OverlengthStrings>;
@@ -320,7 +327,7 @@ def ext_embedded_directive : Extension<
   InGroup<DiagGroup<"embedded-directive">>;
 def ext_missing_varargs_arg : Extension<
   "must specify at least one argument for '...' parameter of variadic macro">,
-  InGroup<GNU>;
+  InGroup<GNUZeroVariadicMacroArguments>;
 def ext_empty_fnmacro_arg : Extension<
   "empty macro arguments are a C99 feature">, InGroup<C99>;
 def warn_cxx98_compat_empty_fnmacro_arg : Warning<
@@ -406,6 +413,21 @@ def warn_pragma_include_alias_expected_filename :
    ExtWarn<"pragma include_alias expected include filename">,
    InGroup<UnknownPragmas>;
 
+// - #pragma warning(...)
+def warn_pragma_warning_expected :
+  ExtWarn<"#pragma warning expected '%0'">,
+  InGroup<UnknownPragmas>;
+def warn_pragma_warning_spec_invalid :
+  ExtWarn<"#pragma warning expected 'push', 'pop', 'default', 'disable',"
+          " 'error', 'once', 'suppress', 1, 2, 3, or 4">,
+  InGroup<UnknownPragmas>;
+def warn_pragma_warning_push_level :
+  ExtWarn<"#pragma warning(push, level) requires a level between 0 and 4">,
+  InGroup<UnknownPragmas>;
+def warn_pragma_warning_expected_number :
+  ExtWarn<"#pragma warning expected a warning number">,
+  InGroup<UnknownPragmas>;
+
 def err__Pragma_malformed : Error<
   "_Pragma takes a parenthesized string literal">;
 def err_pragma_message_malformed : Error<
@@ -455,11 +477,16 @@ def err_paste_at_start : Error<
   "'##' cannot appear at start of macro expansion">;
 def err_paste_at_end : Error<"'##' cannot appear at end of macro expansion">;
 def ext_paste_comma : Extension<
-  "token pasting of ',' and __VA_ARGS__ is a GNU extension">, InGroup<GNU>;
+  "token pasting of ',' and __VA_ARGS__ is a GNU extension">, InGroup<GNUZeroVariadicMacroArguments>;
 def err_unterm_macro_invoc : Error<
   "unterminated function-like macro invocation">;
 def err_too_many_args_in_macro_invoc : Error<
   "too many arguments provided to function-like macro invocation">;
+def note_suggest_parens_for_macro : Note<
+  "parentheses are required around macro argument containing braced "
+  "initializer list">;
+def note_init_list_at_beginning_of_macro_argument : Note<
+  "cannot use initializer list at the beginning of a macro argument">;
 def err_too_few_args_in_macro_invoc : Error<
   "too few arguments provided to function-like macro invocation">;
 def err_pp_bad_paste : Error<
@@ -475,7 +502,7 @@ def err_pp_line_requires_integer : Error<
   "#line directive requires a positive integer argument">;
 def ext_pp_line_zero : Extension<
   "#line directive with zero argument is a GNU extension">, 
-  InGroup<GNU>;
+  InGroup<GNUZeroLineDirective>;
 def err_pp_line_invalid_filename : Error<
   "invalid filename for #line directive">;
 def warn_pp_line_decimal : Warning<
@@ -520,19 +547,18 @@ def note_mmap_lsquare_match : Note<"to match this ']'">;
 def err_mmap_expected_member : Error<
   "expected umbrella, header, submodule, or module export">;
 def err_mmap_expected_header : Error<"expected a header name after '%0'">;
+def err_mmap_expected_mmap_file : Error<"expected a module map file name">;
 def err_mmap_module_redefinition : Error<
   "redefinition of module '%0'">;
 def note_mmap_prev_definition : Note<"previously defined here">;
-def err_mmap_header_conflict : Error<
-  "header '%0' is already part of module '%1'">;
 def err_mmap_header_not_found : Error<
   "%select{|umbrella }0header '%1' not found">;
 def err_mmap_umbrella_dir_not_found : Error<
   "umbrella directory '%0' not found">;
 def err_mmap_umbrella_clash : Error<
   "umbrella for module '%0' already covers this directory">;
-def err_mmap_export_module_id : Error<
-  "expected an exported module name or '*'">;
+def err_mmap_module_id : Error<
+  "expected a module name or '*'">;
 def err_mmap_expected_library_name : Error<
   "expected %select{library|framework}0 name as a string">;
 def err_mmap_config_macro_submodule : Error<
@@ -579,8 +605,20 @@ def warn_auto_module_import : Warning<
   "import of module '%1'">, InGroup<AutoImport>, DefaultIgnore;
 def warn_uncovered_module_header : Warning<
   "umbrella header for module '%0' does not include header '%1'">, 
-  InGroup<IncompleteUmbrella>;
+  InGroup<IncompleteUmbrella>, DefaultIgnore;
+def warn_forgotten_module_header : Warning<
+  "header '%0' is included in module '%1' but not listed in module map">,
+  InGroup<IncompleteModule>, DefaultIgnore;
 def err_expected_id_building_module : Error<
   "expected a module name in '__building_module' expression">;
-  
+def error_use_of_private_header_outside_module : Error<
+  "use of private header from outside its module: '%0'">;
+def error_undeclared_use_of_module : Error<
+  "use of a module not declared used: '%0'">;
+
+def warn_header_guard : Warning<
+  "%0 is used as a header guard here, followed by #define of a different macro">,
+  InGroup<DiagGroup<"header-guard">>;
+def note_header_guard : Note<
+  "%0 is defined here; did you mean %1?">;  
 }
diff --git a/include/clang/Basic/DiagnosticOptions.def b/include/clang/Basic/DiagnosticOptions.def
index 41bbff2edec2..a360a5a84e98 100644
--- a/include/clang/Basic/DiagnosticOptions.def
+++ b/include/clang/Basic/DiagnosticOptions.def
@@ -72,6 +72,7 @@ DIAGOPT(VerifyDiagnostics, 1, 0) /// Check that diagnostics match the expected
 
 DIAGOPT(ElideType, 1, 0)         /// Elide identical types in template diffing
 DIAGOPT(ShowTemplateTree, 1, 0)  /// Print a template tree when diffing
+DIAGOPT(CLFallbackMode, 1, 0)    /// Format for clang-cl fallback mode
 
 VALUE_DIAGOPT(ErrorLimit, 32, 0)           /// Limit # errors emitted.
 /// Limit depth of macro expansion backtrace.
diff --git a/include/clang/Basic/DiagnosticParseKinds.td b/include/clang/Basic/DiagnosticParseKinds.td
index e001bd46a230..2feab52ef4d1 100644
--- a/include/clang/Basic/DiagnosticParseKinds.td
+++ b/include/clang/Basic/DiagnosticParseKinds.td
@@ -23,6 +23,8 @@ def err_asm_empty : Error<"__asm used with no assembly instructions">;
 def err_inline_ms_asm_parsing : Error<"%0">;
 def err_msasm_unsupported_arch : Error<
   "Unsupported architecture '%0' for MS-style inline assembly">;
+def err_msasm_unable_to_create_target : Error<
+  "MS-style inline assembly is not available: %0">;
 }
 
 let CategoryName = "Parse Issue" in {
@@ -54,13 +56,12 @@ def warn_duplicate_declspec : Warning<"duplicate '%0' declaration specifier">,
 def ext_plain_complex : ExtWarn<
   "plain '_Complex' requires a type specifier; assuming '_Complex double'">;
 def ext_integer_complex : Extension<
-  "complex integer types are a GNU extension">, InGroup<GNU>;
+  "complex integer types are a GNU extension">, InGroup<GNUComplexInteger>;
 def ext_thread_before : Extension<"'__thread' before '%0'">;
+def ext_keyword_as_ident : ExtWarn<
+  "keyword '%0' will be treated as an identifier %select{here|for the remainder of the translation unit}1">,
+  InGroup<KeywordCompat>;
 
-def ext_empty_struct_union : Extension<
-  "empty %select{struct|union}0 is a GNU extension">, InGroup<GNU>;
-def warn_empty_struct_union_compat : Warning<"empty %select{struct|union}0 "
-  "has size 0 in C, size 1 in C++">, InGroup<CXXCompat>, DefaultIgnore;
 def error_empty_enum : Error<"use of empty enum">;
 def err_invalid_sign_spec : Error<"'%0' cannot be signed or unsigned">;
 def err_invalid_short_spec : Error<"'short %0' is invalid">;
@@ -75,8 +76,6 @@ def ext_c99_variable_decl_in_for_loop : Extension<
   "variable declaration in for loop is a C99-specific feature">, InGroup<C99>;
 def ext_c99_compound_literal : Extension<
   "compound literals are a C99-specific feature">, InGroup<C99>;
-def ext_c99_flexible_array_member : Extension<
-  "Flexible array members are a C99-specific feature">, InGroup<C99>;
 def ext_enumerator_list_comma_c : Extension<
   "commas at the end of enumerator lists are a C99-specific "
   "feature">, InGroup<C99>;
@@ -103,7 +102,7 @@ def warn_cxx98_compat_alignof : Warning<
   "alignof expressions are incompatible with C++98">,
   InGroup<CXX98Compat>, DefaultIgnore;
 def ext_alignof_expr : ExtWarn<
-  "%0 applied to an expression is a GNU extension">, InGroup<GNU>;
+  "%0 applied to an expression is a GNU extension">, InGroup<GNUAlignofExpression>;
 
 def warn_microsoft_dependent_exists : Warning<
   "dependent %select{__if_not_exists|__if_exists}0 declarations are ignored">, 
@@ -123,17 +122,15 @@ def ext_c11_noreturn : Extension<
   "_Noreturn functions are a C11-specific feature">, InGroup<C11>;
 
 def ext_gnu_indirect_goto : Extension<
-  "use of GNU indirect-goto extension">, InGroup<GNU>;
+  "use of GNU indirect-goto extension">, InGroup<GNULabelsAsValue>;
 def ext_gnu_address_of_label : Extension<
-  "use of GNU address-of-label extension">, InGroup<GNU>;
-def ext_gnu_local_label : Extension<
-  "use of GNU locally declared label extension">, InGroup<GNU>;
+  "use of GNU address-of-label extension">, InGroup<GNULabelsAsValue>;
 def ext_gnu_statement_expr : Extension<
-  "use of GNU statement expression extension">, InGroup<GNU>;
+  "use of GNU statement expression extension">, InGroup<GNUStatementExpression>;
 def ext_gnu_conditional_expr : Extension<
-  "use of GNU ?: expression extension, eliding middle term">, InGroup<GNU>;
+  "use of GNU ?: conditional expression extension, omitting middle operand">, InGroup<GNUConditionalOmittedOperand>;
 def ext_gnu_empty_initializer : Extension<
-  "use of GNU empty initializer extension">, InGroup<GNU>;
+  "use of GNU empty initializer extension">, InGroup<GNUEmptyInitializer>;
 def ext_gnu_array_range : Extension<"use of GNU array range extension">, 
   InGroup<GNUDesignator>;
 def ext_gnu_missing_equal_designator : ExtWarn<
@@ -144,7 +141,7 @@ def ext_gnu_old_style_field_designator : ExtWarn<
   "use of GNU old-style field designator extension">, 
   InGroup<GNUDesignator>;
 def ext_gnu_case_range : Extension<"use of GNU case range extension">,
-  InGroup<GNU>;
+  InGroup<GNUCaseRange>;
 
 // Generic errors.
 def err_expected_expression : Error<"expected expression">;
@@ -156,7 +153,7 @@ def err_expected_ident_lparen : Error<"expected identifier or '('">;
 def err_expected_ident_lbrace : Error<"expected identifier or '{'">;
 def err_expected_lbrace : Error<"expected '{'">;
 def err_expected_lparen : Error<"expected '('">;
-def err_expected_lparen_or_lbrace : Error<"expected '('or '{'">;
+def err_expected_lparen_or_lbrace : Error<"expected '(' or '{'">;
 def err_expected_rparen : Error<"expected ')'">;
 def err_expected_lsquare : Error<"expected '['">;
 def err_expected_rsquare : Error<"expected ']'">;
@@ -173,10 +170,6 @@ def err_expected_member_name_or_semi : Error<
   "expected member name or ';' after declaration specifiers">;
 def err_function_declared_typedef : Error<
   "function definition declared 'typedef'">;
-def err_iboutletcollection_builtintype : Error<
-  "type argument of iboutletcollection attribute cannot be a builtin type">;
-def err_iboutletcollection_with_protocol : Error<
-  "invalid argument of iboutletcollection attribute">;
 def err_at_defs_cxx : Error<"@defs is not supported in Objective-C++">;
 def err_at_in_class : Error<"unexpected '@' in member specification">;
 
@@ -313,6 +306,11 @@ def err_expected_class_name_not_template :
   Error<"'typename' is redundant; base classes are implicitly types">;
 def err_unspecified_vla_size_with_static : Error<
   "'static' may not be used with an unspecified variable length array size">;
+def warn_deprecated_register : Warning<
+  "'register' storage class specifier is deprecated">,
+  InGroup<DeprecatedRegister>;
+def err_expected_parentheses_around_typename : Error<
+  "expected parentheses around type name in %0 expression">;
 
 def err_expected_case_before_expression: Error<
   "expected 'case' keyword before expression">;
@@ -451,6 +449,7 @@ def err_invalid_operator_on_type : Error<
   "cannot use %select{dot|arrow}0 operator on a type">;
 def err_expected_unqualified_id : Error<
   "expected %select{identifier|unqualified-id}0">;
+def err_unexpected_unqualified_id : Error<"type-id cannot have a name">;
 def err_func_def_no_params : Error<
   "function definition does not declare parameters">;
 def err_expected_lparen_after_type : Error<
@@ -468,6 +467,10 @@ def err_expected_member_or_base_name : Error<
   "expected class member or base class name">;
 def err_expected_lbrace_after_base_specifiers : Error<
   "expected '{' after base class list">;
+def err_missing_end_of_definition : Error<
+  "missing '}' at end of definition of %q0">;
+def note_missing_end_of_definition_before : Note<
+  "still within definition of %q0 here">;
 def ext_ellipsis_exception_spec : Extension<
   "exception specification of '...' is a Microsoft extension">,
   InGroup<Microsoft>;
@@ -482,6 +485,8 @@ def err_expected_rbrace_or_comma : Error<"expected '}' or ','">;
 def err_expected_rsquare_or_comma : Error<"expected ']' or ','">;
 def err_using_namespace_in_class : Error<
   "'using namespace' is not allowed in classes">;
+def err_constructor_bad_name : Error<
+  "missing return type for function %0; did you mean the constructor name %1?">;
 def err_destructor_tilde_identifier : Error<
   "expected a class name after '~' to name a destructor">;
 def err_destructor_template_id : Error<
@@ -498,6 +503,9 @@ def err_misplaced_ellipsis_in_declaration : Error<
 def ext_abstract_pack_declarator_parens : ExtWarn<
   "ISO C++11 requires a parenthesized pack declaration to have a name">,
   InGroup<DiagGroup<"anonymous-pack-parens">>;
+def err_function_is_not_record : Error<
+  "unexpected '%select{.|->}0' in function call; perhaps remove the "
+  "'%select{.|->}0'?">;
 
 // C++ derived classes
 def err_dup_virtual : Error<"duplicate 'virtual' in base specifier">;
@@ -579,7 +587,7 @@ def err_two_right_angle_brackets_need_space : Error<
 def err_right_angle_bracket_equal_needs_space : Error<
   "a space is required between a right angle bracket and an equals sign "
   "(use '> =')">;
-def warn_cxx0x_right_shift_in_template_arg : Warning<
+def warn_cxx11_right_shift_in_template_arg : Warning<
   "use of right-shift operator ('>>') in template argument will require "
   "parentheses in C++11">, InGroup<CXX11Compat>;
 def warn_cxx98_compat_two_right_angle_brackets : Warning<
@@ -593,6 +601,12 @@ def err_explicit_instantiation_with_definition : Error<
     "explicit template instantiation cannot have a definition; if this "
     "definition is meant to be an explicit specialization, add '<>' after the "
     "'template' keyword">;
+def err_template_defn_explicit_instantiation : Error<
+  "%select{function|class|variable}0 cannot be defined in an explicit instantiation; if this "
+  "declaration is meant to be a %select{function|class|variable}0 definition, remove the 'template' keyword">;
+def err_friend_explicit_instantiation : Error<
+  "friend cannot be declared in an explicit instantiation; if this "
+  "declaration is meant to be a friend declaration, remove the 'template' keyword">;
 def err_explicit_instantiation_enum : Error<
     "enumerations cannot be explicitly instantiated">;
 def err_expected_template_parameter : Error<"expected template parameter">;
@@ -609,7 +623,7 @@ def warn_cxx98_compat_extern_template : Warning<
   InGroup<CXX98CompatPedantic>, DefaultIgnore;
 def warn_static_inline_explicit_inst_ignored : Warning<
   "ignoring '%select{static|inline}0' keyword on explicit template "
-  "instantiation">;
+  "instantiation">, InGroup<DiagGroup<"static-inline-explicit-instantiation">>;
   
 // Constructor template diagnostics.
 def err_out_of_line_constructor_template_id : Error<
@@ -693,6 +707,9 @@ def warn_cxx98_compat_override_control_keyword : Warning<
   InGroup<CXX98Compat>, DefaultIgnore;
 def err_override_control_interface : Error<
   "'%0' keyword not permitted with interface types">;
+def ext_ms_sealed_keyword : ExtWarn<
+  "'sealed' keyword is a Microsoft extension">,
+  InGroup<Microsoft>;
 
 def err_access_specifier_interface : Error<
   "interface types cannot specify '%select{private|protected}0' access">;
@@ -783,13 +800,16 @@ def warn_pragma_unused_expected_punc : Warning<
   "expected ')' or ',' in '#pragma unused'">;
 // - #pragma fp_contract
 def err_pragma_fp_contract_scope : Error<
-  "'#pragma fp_contract' should only appear at file scope or at the start of a "
-  "compound expression">; 
+  "'#pragma fp_contract' can only appear at file scope or at the start of a "
+  "compound statement">; 
 // - #pragma comment
 def err_pragma_comment_malformed : Error<
   "pragma comment requires parenthesized identifier and optional string">;
 def err_pragma_comment_unknown_kind : Error<"unknown kind of pragma comment">;
-
+// - #pragma detect_mismatch
+def err_pragma_detect_mismatch_malformed : Error<
+  "pragma detect_mismatch is malformed; it requires two comma-separated "
+  "string literals">;
 
 // OpenCL Section 6.8.g
 def err_not_opencl_storage_class_specifier : Error<
@@ -819,13 +839,18 @@ def err_seh___finally_block : Error<
 def warn_pragma_omp_ignored : Warning <
   "unexpected '#pragma omp ...' in program">, InGroup<SourceUsesOpenMP>, DefaultIgnore;
 def warn_omp_extra_tokens_at_eol : Warning <
-  "extra tokens at end of '#pragma omp %0' are ignored">,
+  "extra tokens at the end of '#pragma omp %0' are ignored">,
   InGroup<ExtraTokens>;
 def err_omp_unknown_directive : Error <
   "expected an OpenMP directive">;
 def err_omp_unexpected_directive : Error <
   "unexpected OpenMP directive '#pragma omp %0'">;
-
+def err_omp_expected_punc : Error <
+  "expected ',' or ')' in %select{'#pragma omp %1'|'%1' clause}0">;
+def err_omp_unexpected_clause : Error <
+  "unexpected OpenMP clause '%0' in directive '#pragma omp %1'">;
+def err_omp_more_one_clause : Error <
+  "directive '#pragma omp %0' cannot contain more than one '%1' clause">;
 } // end of Parse Issue category.
 
 let CategoryName = "Modules Issue" in {
diff --git a/include/clang/Basic/DiagnosticSemaKinds.td b/include/clang/Basic/DiagnosticSemaKinds.td
index f5345eb8c359..6c7cb001808a 100644
--- a/include/clang/Basic/DiagnosticSemaKinds.td
+++ b/include/clang/Basic/DiagnosticSemaKinds.td
@@ -18,7 +18,12 @@ let CategoryName = "Semantic Issue" in {
 def warn_variables_not_in_loop_body : Warning<
   "variable%select{s| %1|s %1 and %2|s %1, %2, and %3|s %1, %2, %3, and %4}0 "
   "used in loop condition not modified in loop body">,
-  InGroup<DiagGroup<"loop-analysis">>, DefaultIgnore;
+  InGroup<LoopAnalysis>, DefaultIgnore;
+def warn_redundant_loop_iteration : Warning<
+  "variable %0 is %select{decremented|incremented}1 both in the loop header "
+  "and in the loop body">,
+  InGroup<LoopAnalysis>, DefaultIgnore;
+def note_loop_iteration_here : Note<"%select{decremented|incremented}0 here">;
 
 def warn_duplicate_enum_values : Warning<
   "element %0 has been implicitly assigned %1 which another element has "
@@ -30,23 +35,19 @@ def err_expr_not_ice : Error<
   "expression is not an %select{integer|integral}0 constant expression">;
 def ext_expr_not_ice : Extension<
   "expression is not an %select{integer|integral}0 constant expression; "
-  "folding it to a constant is a GNU extension">, InGroup<GNU>;
+  "folding it to a constant is a GNU extension">, InGroup<GNUFoldingConstant>;
 def err_typecheck_converted_constant_expression : Error<
   "value of type %0 is not implicitly convertible to %1">;
 def err_typecheck_converted_constant_expression_disallowed : Error<
   "conversion from %0 to %1 is not allowed in a converted constant expression">;
 def err_expr_not_cce : Error<
-  "%select{case value|enumerator value|non-type template argument}0 "
+  "%select{case value|enumerator value|non-type template argument|array size}0 "
   "is not a constant expression">;
-def err_cce_narrowing : ExtWarn<
-  "%select{case value|enumerator value|non-type template argument}0 "
+def ext_cce_narrowing : ExtWarn<
+  "%select{case value|enumerator value|non-type template argument|array size}0 "
   "%select{cannot be narrowed from type %2 to %3|"
   "evaluates to %2, which cannot be narrowed to type %3}1">,
-  InGroup<CXX11Narrowing>, DefaultError;
-def err_cce_narrowing_sfinae : Error<
-  "%select{case value|enumerator value|non-type template argument}0 "
-  "%select{cannot be narrowed from type %2 to %3|"
-  "evaluates to %2, which cannot be narrowed to type %3}1">;
+  InGroup<CXX11Narrowing>, DefaultError, SFINAEFailure;
 def err_ice_not_integral : Error<
   "integral constant expression must have integral or unscoped enumeration "
   "type, not %0">;
@@ -78,9 +79,6 @@ def ext_vla : Extension<"variable length arrays are a C99 feature">,
   InGroup<VLAExtension>;
 def warn_vla_used : Warning<"variable length array used">,
   InGroup<VLA>, DefaultIgnore;
-def warn_cxx11_compat_array_of_runtime_bound : Warning<
-  "arrays of runtime bound are incompatible with C++ standards before C++1y">,
-  InGroup<CXXPre1yCompatPedantic>, DefaultIgnore;
 def err_vla_non_pod : Error<"variable length array of non-POD element type %0">;
 def err_vla_in_sfinae : Error<
   "variable length array cannot be formed during template argument deduction">;
@@ -93,7 +91,7 @@ def err_vla_decl_has_static_storage : Error<
 def err_vla_decl_has_extern_linkage : Error<
   "variable length array declaration can not have 'extern' linkage">;
 def ext_vla_folded_to_constant : Extension<
-  "variable length array folded to constant array as an extension">;
+  "variable length array folded to constant array as an extension">, InGroup<GNUFoldingConstant>;
 
 // C99 variably modified types
 def err_variably_modified_template_arg : Error<
@@ -138,7 +136,7 @@ def err_designator_into_flexible_array_member : Error<
 def note_flexible_array_member : Note<
   "initialized flexible array member %0 is here">;
 def ext_flexible_array_init : Extension<
-  "flexible array initialization is a GNU extension">, InGroup<GNU>;
+  "flexible array initialization is a GNU extension">, InGroup<GNUFlexibleArrayInitializer>;
 
 // Declarations.
 def err_bad_variable_name : Error<
@@ -150,6 +148,12 @@ def warn_unused_parameter : Warning<"unused parameter %0">,
   InGroup<UnusedParameter>, DefaultIgnore;
 def warn_unused_variable : Warning<"unused variable %0">,
   InGroup<UnusedVariable>, DefaultIgnore;
+def warn_unused_property_backing_ivar : 
+  Warning<"ivar %0 which backs the property is not "
+  "referenced in this property's accessor">,
+  InGroup<UnusedPropertyIvar>, DefaultIgnore;
+def warn_unused_const_variable : Warning<"unused variable %0">,
+  InGroup<UnusedConstVariable>, DefaultIgnore;
 def warn_unused_exception_param : Warning<"unused exception parameter %0">,
   InGroup<UnusedExceptionParameter>, DefaultIgnore;
 def warn_decl_in_param_list : Warning<
@@ -287,6 +291,18 @@ def note_using_decl : Note<"%select{|previous }0using declaration">;
 def warn_access_decl_deprecated : Warning<
   "access declarations are deprecated; use using declarations instead">,
   InGroup<Deprecated>;
+def err_access_decl : Error<
+  "ISO C++11 does not allow access declarations; "
+  "use using declarations instead">;
+def warn_exception_spec_deprecated : Warning<
+  "dynamic exception specifications are deprecated">,
+  InGroup<Deprecated>, DefaultIgnore;
+def note_exception_spec_deprecated : Note<"use '%0' instead">;
+def warn_deprecated_copy_operation : Warning<
+  "definition of implicit copy %select{constructor|assignment operator}1 "
+  "for %0 is deprecated because it has a user-declared "
+  "%select{copy %select{assignment operator|constructor}1|destructor}2">,
+  InGroup<Deprecated>, DefaultIgnore;
 
 def warn_global_constructor : Warning<
   "declaration requires a global constructor">,
@@ -400,7 +416,7 @@ def ext_noreturn_main : ExtWarn<
 def note_main_remove_noreturn : Note<"remove '_Noreturn'">;
 def err_constexpr_main : Error<
   "'main' is not allowed to be declared constexpr">;
-def err_main_template_decl : Error<"'main' cannot be a template">;
+def err_mainlike_template_decl : Error<"'%0' cannot be a template">;
 def err_main_returns_nonint : Error<"'main' must return 'int'">;
 def ext_main_returns_nonint : ExtWarn<"return type of 'main' is not 'int'">,
     InGroup<MainReturnType>;
@@ -447,6 +463,7 @@ def warn_pragma_pack_show : Warning<"value of #pragma pack(show) == %0">;
 def warn_pragma_pack_pop_identifer_and_alignment : Warning<
   "specifying both a name and alignment to 'pop' is undefined">;
 def warn_pragma_pack_pop_failed : Warning<"#pragma pack(pop, ...) failed: %0">;
+def warn_pragma_ms_struct_failed : Warning<"#pramga ms_struct can not be used with dynamic classes or structures">, InGroup<IgnoredAttributes>;
 
 def warn_pragma_unused_undeclared_var : Warning<
   "undeclared variable %0 used as an argument for '#pragma unused'">;
@@ -472,7 +489,6 @@ def err_no_nsconstant_string_class : Error<
   "cannot find interface declaration for %0">;
 def err_recursive_superclass : Error<
   "trying to recursively use %0 as superclass of %1">;
-def warn_previous_alias_decl : Warning<"previously declared alias is ignored">;
 def err_conflicting_aliasing_type : Error<"conflicting types for alias %0">;
 def warn_undef_interface : Warning<"cannot find interface declaration for %0">;
 def warn_duplicate_protocol_def : Warning<"duplicate protocol definition of %0 is ignored">;
@@ -488,6 +504,9 @@ def warn_property_attribute : Warning<
   "'%1' attribute on property %0 does not match the property inherited from %2">;
 def warn_property_types_are_incompatible : Warning<
   "property type %0 is incompatible with type %1 inherited from %2">;
+def warn_protocol_property_mismatch : Warning<
+  "property of type %0 was selected for synthesis">,
+  InGroup<DiagGroup<"protocol-property-synthesis-ambiguity">>;
 def err_undef_interface : Error<"cannot find interface declaration for %0">;
 def err_category_forward_interface : Error<
   "cannot define %select{category|class extension}0 for undefined class %1">;
@@ -499,6 +518,8 @@ def note_while_in_implementation : Note<
   "detected while default synthesizing properties in class implementation">;
 def note_class_declared : Note<
   "class is declared here">;
+def note_receiver_class_declared : Note<
+  "receiver is instance of class declared here">;
 def note_receiver_is_id : Note<
   "receiver is treated with 'id' type for purpose of method lookup">;
 def note_suppressed_class_declare : Note<
@@ -506,7 +527,7 @@ def note_suppressed_class_declare : Note<
 def err_objc_root_class_subclass : Error<
   "objc_root_class attribute may only be specified on a root class declaration">;
 def warn_objc_root_class_missing : Warning<
-	"class %0 defined without specifying a base class">,
+  "class %0 defined without specifying a base class">,
   InGroup<ObjCRootClass>;
 def note_objc_needs_superclass : Note<
   "add a super class to fix this problem">;
@@ -645,12 +666,18 @@ def warn_objc_isa_assign : Warning<
 def warn_objc_pointer_masking : Warning<
   "bitmasking for introspection of Objective-C object pointers is strongly "
   "discouraged">,
-  InGroup<DiagGroup<"deprecated-objc-pointer-introspection">>;
+  InGroup<ObjCPointerIntrospect>;
+def warn_objc_pointer_masking_performSelector : Warning<warn_objc_pointer_masking.Text>,
+  InGroup<ObjCPointerIntrospectPerformSelector>;
 def warn_objc_property_default_assign_on_object : Warning<
   "default property attribute 'assign' not appropriate for non-GC object">,
   InGroup<ObjCPropertyNoAttribute>;
 def warn_property_attr_mismatch : Warning<
   "property attribute in class extension does not match the primary class">;
+def warn_property_implicitly_mismatched : Warning <
+  "primary property declaration is implicitly strong while redeclaration "
+  "in class extension is weak">,
+  InGroup<DiagGroup<"objc-property-implicit-mismatch">>;
 def warn_objc_property_copy_missing_on_block : Warning<
     "'copy' attribute must be specified for the block property "
     "when -fobjc-gc-only is specified">;
@@ -727,6 +754,8 @@ def error_category_property : Error<
   "class implementation">;
 def note_property_declare : Note<
   "property declared here">;
+def note_protocol_property_declare : Note<
+  "it could also be property of type %0 declared here">;
 def note_property_synthesize : Note<
   "property synthesized here">;
 def error_synthesize_category_decl : Error<
@@ -804,6 +833,9 @@ def error_dealloc_bad_result_type : Error<
   "instead of %0">;
 def warn_undeclared_selector : Warning<
   "undeclared selector %0">, InGroup<UndeclaredSelector>, DefaultIgnore;
+def warn_undeclared_selector_with_typo : Warning<
+  "undeclared selector %0; did you mean %1?">,
+  InGroup<UndeclaredSelector>, DefaultIgnore;
 def warn_implicit_atomic_property : Warning<
   "property is assumed atomic by default">, InGroup<ImplicitAtomic>, DefaultIgnore;
 def note_auto_readonly_iboutlet_fixup_suggest : Note<
@@ -813,10 +845,12 @@ def warn_auto_readonly_iboutlet_property : Warning<
   "not work correctly with 'nib' loader">,
   InGroup<DiagGroup<"readonly-iboutlet-property">>;
 def warn_auto_implicit_atomic_property : Warning<
-  "property is assumed atomic when auto-synthesizing the property">, 
+  "property is assumed atomic when auto-synthesizing the property">,
   InGroup<ImplicitAtomic>, DefaultIgnore;
 def warn_unimplemented_selector:  Warning<
-  "unimplemented selector %0">, InGroup<Selector>, DefaultIgnore;
+  "creating selector for nonexistent method %0">, InGroup<Selector>, DefaultIgnore;
+def warning_multiple_selectors: Warning<
+  "multiple selectors named %0 found">, InGroup<SelectorTypeMismatch>, DefaultIgnore;
 def warn_unimplemented_protocol_method : Warning<
   "method %0 in protocol not implemented">, InGroup<Protocol>;
 
@@ -834,7 +868,7 @@ def err_inline_namespace_mismatch : Error<
 def err_unexpected_friend : Error<
   "friends can only be classes or functions">;
 def ext_enum_friend : ExtWarn<
-  "enumeration type %0 cannot be a friend">;
+  "befriending enumeration type %0 is a C++11 extension">, InGroup<CXX11>;
 def warn_cxx98_compat_enum_friend : Warning<
   "befriending enumeration type %0 is incompatible with C++98">,
   InGroup<CXX98Compat>, DefaultIgnore;
@@ -865,7 +899,7 @@ def err_tagless_friend_type_template : Error<
 def err_no_matching_local_friend : Error<
   "no matching function found in local scope">;
 def err_no_matching_local_friend_suggest : Error<
-  "no matching function %0 found in local scope; did you mean %2?">;
+  "no matching function %0 found in local scope; did you mean %3?">;
 def err_partial_specialization_friend : Error<
   "partial specialization cannot be declared as a friend">;
 def err_qualified_friend_def : Error<
@@ -876,6 +910,14 @@ def err_friend_not_first_in_declaration : Error<
   "'friend' must appear first in a non-function declaration">;
 def err_using_decl_friend : Error<
   "cannot befriend target of using declaration">;
+def warn_template_qualified_friend_unsupported : Warning<
+  "dependent nested name specifier '%0' for friend class declaration is "
+  "not supported; turning off access control for %1">,
+  InGroup<UnsupportedFriend>;
+def warn_template_qualified_friend_ignored : Warning<
+  "dependent nested name specifier '%0' for friend template declaration is "
+  "not supported; ignoring this friend declaration">,
+  InGroup<UnsupportedFriend>;
   
 def err_invalid_member_in_interface : Error<
   "%select{data member |non-public member function |static member function |"
@@ -886,12 +928,15 @@ def err_invalid_base_in_interface : Error<
   "%select{'struct|non-public 'interface|'class}0 %1'">;
 
 def err_abstract_type_in_decl : Error<
-  "%select{return|parameter|variable|field|instance variable}0 type %1 is an abstract class">;
+  "%select{return|parameter|variable|field|instance variable|"
+  "synthesized instance variable}0 type %1 is an abstract class">;
 def err_allocation_of_abstract_type : Error<
   "allocating an object of abstract class type %0">;
 def err_throw_abstract_type : Error<
   "cannot throw an object of abstract type %0">;
 def err_array_of_abstract_type : Error<"array of abstract class type %0">;
+def err_capture_of_abstract_type : Error<
+  "by-copy capture of value of abstract type %0">;
 
 def err_multiple_final_overriders : Error<
   "virtual function %q0 has more than one final overrider in %1">; 
@@ -999,8 +1044,8 @@ def err_access_dtor_base :
     Error<"base class %0 has %select{private|protected}1 destructor">,
     AccessControl;
 def err_access_dtor_vbase :
-    Error<"inherited virtual base class %0 has "
-    "%select{private|protected}1 destructor">,
+    Error<"inherited virtual base class %1 has "
+    "%select{private|protected}2 destructor">,
     AccessControl;
 def err_access_dtor_temp :
     Error<"temporary of type %0 has %select{private|protected}1 destructor">,
@@ -1086,6 +1131,8 @@ def err_explicit_non_ctor_or_conv_function : Error<
 def err_static_not_bitfield : Error<"static member %0 cannot be a bit-field">;
 def err_static_out_of_line : Error<
   "'static' can only be specified inside the class definition">;
+def err_storage_class_for_static_member : Error<
+  "static data member definition cannot specify a storage class">;
 def err_typedef_not_bitfield : Error<"typedef member %0 cannot be a bit-field">;
 def err_not_integral_type_bitfield : Error<
   "bit-field %0 has non-integral type %1">;
@@ -1114,7 +1161,7 @@ def note_bitfield_decl : Note<"bit-field is declared here">;
 def note_previous_decl : Note<"%0 declared here">;
 def note_implicit_param_decl : Note<"%0 is an implicit parameter">;
 def note_member_synthesized_at : Note<
-  "implicit default %select{constructor|copy constructor|move constructor|copy "
+  "implicit %select{default constructor|copy constructor|move constructor|copy "
   "assignment operator|move assignment operator|destructor}0 for %1 first "
   "required here">;
 def note_inhctor_synthesized_at : Note<
@@ -1172,6 +1219,9 @@ def ext_static_data_member_in_union : ExtWarn<
 def warn_cxx98_compat_static_data_member_in_union : Warning<
   "static data member %0 in union is incompatible with C++98">,
   InGroup<CXX98Compat>, DefaultIgnore;
+def ext_union_member_of_reference_type : ExtWarn<
+  "union member %0 has reference type %1, which is a Microsoft extension">,
+  InGroup<Microsoft>;
 def err_union_member_of_reference_type : Error<
   "union member %0 has reference type %1">;
 def ext_anonymous_struct_union_qualified : Extension<
@@ -1261,7 +1311,9 @@ def err_destructor_template : Error<
 def err_init_conversion_failed : Error<
   "cannot initialize %select{a variable|a parameter|return object|an "
   "exception object|a member subobject|an array element|a new value|a value|a "
-  "base class|a constructor delegation|a vector element}0 "
+  "base class|a constructor delegation|a vector element|a block element|a "
+  "complex element|a lambda capture|a compound literal initializer|a "
+  "related result|a parameter of CF audited function}0 "
   "%diff{of type $ with an %select{rvalue|lvalue}2 of type $|"
   "with an %select{rvalue|lvalue}2 of incompatible type}1,3"
   "%select{|: different classes%diff{ ($ vs $)|}5,6"
@@ -1330,6 +1382,9 @@ def warn_field_is_uninit : Warning<"field %0 is uninitialized when used here">,
 def warn_reference_field_is_uninit : Warning<
   "reference %0 is not yet bound to a value when used here">,
   InGroup<Uninitialized>;
+def note_uninit_in_this_constructor : Note<
+  "during field initialization in %select{this|the implicit default}0 "
+  "constructor">;
 def warn_static_self_reference_in_init : Warning<
   "static variable %0 is suspiciously used within its own initialization">,
   InGroup<UninitializedStaticSelfInit>;
@@ -1348,7 +1403,10 @@ def warn_sometimes_uninit_var : Warning<
   "%select{'%3' condition is %select{true|false}4|"
   "'%3' loop %select{is entered|exits because its condition is false}4|"
   "'%3' loop %select{condition is true|exits because its condition is false}4|"
-  "switch %3 is taken}2">, InGroup<UninitializedSometimes>, DefaultIgnore;
+  "switch %3 is taken|"
+  "its declaration is reached|"
+  "%3 is called}2">,
+  InGroup<UninitializedSometimes>, DefaultIgnore;
 def warn_maybe_uninit_var : Warning<
   "variable %0 may be uninitialized when "
   "%select{used here|captured by block}1">,
@@ -1425,11 +1483,14 @@ def err_illegal_decl_array_of_auto : Error<
 def err_new_array_of_auto : Error<
   "cannot allocate array of 'auto'">;
 def err_auto_not_allowed : Error<
-  "'auto' not allowed %select{in function prototype|in non-static struct member"
+  "%select{'auto'|'decltype(auto)'}0 not allowed %select{in function prototype"
+  "|in non-static struct member"
   "|in non-static union member|in non-static class member|in interface member"
   "|in exception declaration|in template parameter|in block literal"
   "|in template argument|in typedef|in type alias|in function return type"
-  "|in conversion function type|here}0">;
+  "|in conversion function type|here|in lambda parameter}1">;
+def err_auto_not_allowed_var_inst : Error<
+  "'auto' variable template instantiation is not allowed">;
 def err_auto_var_requires_init : Error<
   "declaration of variable %0 with type %1 requires an initializer">;
 def err_auto_new_requires_ctor_arg : Error<
@@ -1498,19 +1559,22 @@ def err_auto_fn_virtual : Error<
 // C++11 override control
 def override_keyword_only_allowed_on_virtual_member_functions : Error<
   "only virtual member functions can be marked '%0'">;
+def override_keyword_hides_virtual_member_function : Error<
+  "non-virtual member function marked '%0' hides virtual member "
+  "%select{function|functions}1">;
 def err_function_marked_override_not_overriding : Error<
   "%0 marked 'override' but does not override any member functions">;
 def err_class_marked_final_used_as_base : Error<
-  "base %0 is marked 'final'">;
+  "base %0 is marked '%select{final|sealed}1'">;
 def warn_abstract_final_class : Warning<
-  "abstract class is marked 'final'">, InGroup<AbstractFinalClass>;
+  "abstract class is marked '%select{final|sealed}0'">, InGroup<AbstractFinalClass>;
 
 // C++11 attributes
 def err_repeat_attribute : Error<"'%0' attribute cannot be repeated">;
 
 // C++11 final
 def err_final_function_overridden : Error<
-  "declaration of %0 overrides a 'final' function">;
+  "declaration of %0 overrides a '%select{final|sealed}1' function">;
 
 // C++11 scoped enumerations
 def err_enum_invalid_underlying : Error<
@@ -1572,6 +1636,9 @@ def note_in_for_range: Note<
 def err_for_range_invalid: Error<
   "invalid range expression of type %0; no viable '%select{begin|end}1' "
   "function available">;
+def err_range_on_array_parameter : Error<
+  "cannot build range expression with array function parameter %0 since "
+  "parameter with array type %1 is treated as pointer type %2">;
 def err_for_range_dereference : Error<
   "invalid range expression of type %0; did you mean to dereference it "
   "with '*'?">;
@@ -1725,8 +1792,8 @@ def err_attribute_can_be_applied_only_to_symbol_declaration : Error<
 def err_attributes_are_not_compatible : Error<
   "%0 and %1 attributes are not compatible">;
 def err_attribute_wrong_number_arguments : Error<
-  "attribute %plural{0:takes no arguments|1:takes one argument|"
-  ":requires exactly %0 arguments}0">;
+  "%0 attribute %plural{0:takes no arguments|1:takes one argument|"
+  ":requires exactly %1 arguments}1">;
 def err_attribute_too_many_arguments : Error<
   "attribute takes no more than %0 argument%s0">;
 def err_suppress_autosynthesis : Error<
@@ -1734,13 +1801,11 @@ def err_suppress_autosynthesis : Error<
   "to a class declaration">;
 def err_attribute_too_few_arguments : Error<
   "attribute takes at least %0 argument%s0">;
-def err_attribute_missing_parameter_name : Error<
-  "attribute requires unquoted parameter">;
 def err_attribute_invalid_vector_type : Error<"invalid vector element type %0">;
 def err_attribute_bad_neon_vector_size : Error<
   "Neon vector size must be 64 or 128 bits">;
-def err_attribute_argument_not_int : Error<
-  "'%0' attribute requires integer constant">;
+def err_attribute_unsupported : Error<
+  "%0 attribute is not supported for this target">;
 def err_aligned_attribute_argument_not_int : Error<
   "'aligned' attribute requires integer constant">;
 def err_alignas_attribute_wrong_decl_type : Error<
@@ -1756,8 +1821,12 @@ def err_alignas_mismatch : Error<
   "redeclaration has different alignment requirement (%1 vs %0)">;
 def err_alignas_underaligned : Error<
   "requested alignment is less than minimum alignment of %1 for type %0">;
-def err_attribute_first_argument_not_int_or_bool : Error<
-  "%0 attribute first argument must be of int or bool type">;
+def err_attribute_argument_n_type : Error<
+  "%0 attribute requires parameter %1 to be %select{int or bool|an integer "
+  "constant|a string|an identifier}2">;
+def err_attribute_argument_type : Error<
+  "%0 attribute requires %select{int or bool|an integer "
+  "constant|a string|an identifier}1">;
 def err_attribute_argument_outof_range : Error<
   "init_priority attribute requires integer constant between "
   "101 and 65535 inclusive">;
@@ -1766,26 +1835,20 @@ def err_init_priority_object_attr : Error<
   "of objects of class type">;
 def err_attribute_argument_vec_type_hint : Error<
   "invalid attribute argument %0 - expecting a vector or vectorizable scalar type">;
-def err_attribute_argument_n_not_int : Error<
-  "'%0' attribute requires parameter %1 to be an integer constant">;
-def err_attribute_argument_n_not_string : Error<
-  "'%0' attribute requires parameter %1 to be a string">;
-def err_attribute_argument_n_not_identifier : Error<
-  "'%0' attribute requires parameter %1 to be an identifier">;
 def err_attribute_argument_out_of_bounds : Error<
   "'%0' attribute parameter %1 is out of bounds">;
-def err_attribute_requires_objc_interface : Error<
-  "attribute may only be applied to an Objective-C interface">;
 def err_attribute_uuid_malformed_guid : Error<
   "uuid attribute contains a malformed GUID">;
 def warn_nonnull_pointers_only : Warning<
   "nonnull attribute only applies to pointer arguments">;
 def err_attribute_pointers_only : Error<
-  "'%0' attribute only applies to pointer arguments">;
+  "%0 attribute only applies to pointer arguments">;
+def err_attribute_no_member_pointers : Error<
+  "%0 attribute cannot be used with pointers to members">;
 def err_attribute_invalid_implicit_this_argument : Error<
   "'%0' attribute is invalid for the implicit this argument">;
 def err_ownership_type : Error<
-  "%0 attribute only applies to %1 arguments">;
+  "%0 attribute only applies to %select{pointer|integer}1 arguments">;
 def err_format_strftime_third_parameter : Error<
   "strftime format attribute requires 3rd parameter to be 0">;
 def err_format_attribute_requires_variadic : Error<
@@ -1795,12 +1858,14 @@ def err_format_attribute_result_not : Error<"function does not return %0">;
 def err_format_attribute_implicit_this_format_string : Error<
   "format attribute cannot specify the implicit this argument as the format "
   "string">;
-def warn_unknown_method_family : Warning<"unrecognized method family">;
+def err_common_not_supported_cplusplus : Error<
+  "common attribute is not supported in C++">;
 def err_init_method_bad_return_type : Error<
   "init methods must return an object pointer type, not %0">;
 def err_attribute_invalid_size : Error<
   "vector size not an integral multiple of component size">;
 def err_attribute_zero_size : Error<"zero vector size">;
+def err_attribute_size_too_large : Error<"vector size too large">;
 def err_typecheck_vector_not_convertable : Error<
   "can't convert between vector values of different size (%0 and %1)">;
 def err_typecheck_ext_vector_not_typedef : Error<
@@ -1809,8 +1874,6 @@ def err_ext_vector_component_exceeds_length : Error<
   "vector component access exceeds type %0">;
 def err_ext_vector_component_name_illegal : Error<
   "illegal vector component name '%0'">;
-def err_attribute_address_space_not_int : Error<
-  "address space attribute requires an integer constant">;
 def err_attribute_address_space_negative : Error<
   "address space is negative">;
 def err_attribute_address_space_too_high : Error<
@@ -1827,8 +1890,6 @@ def err_field_with_address_space : Error<
   "field may not be qualified with an address space">;
 def err_attr_objc_ownership_redundant : Error<
   "the type %0 is already explicitly ownership-qualified">;
-def err_attribute_not_string : Error<
-  "argument to %0 attribute was not a string literal">;
 def err_undeclared_nsnumber : Error<
   "NSNumber must be available to use Objective-C literals">;
 def err_invalid_nsnumber_type : Error<
@@ -1862,9 +1923,15 @@ def warn_objc_literal_comparison : Warning<
   "direct comparison of %select{an array literal|a dictionary literal|"
   "a numeric literal|a boxed expression|}0 has undefined behavior">,
   InGroup<ObjCLiteralComparison>;
+def warn_missing_atsign_prefix : Warning<
+  "string literal must be prefixed by '@' ">, InGroup<ObjCLiteralMissingAtSign>;
 def warn_objc_string_literal_comparison : Warning<
   "direct comparison of a string literal has undefined behavior">, 
   InGroup<ObjCStringComparison>;
+def warn_concatenated_nsarray_literal : Warning<
+  "concatenated NSString literal for an NSArray expression - "
+  "possibly missing a comma">,
+  InGroup<ObjCStringConcatenation>;
 def note_objc_literal_comparison_isequal : Note<
   "use 'isEqual:' instead">;
 
@@ -1948,8 +2015,10 @@ def warn_weak_identifier_undeclared : Warning<
   "weak identifier %0 never declared">;
 def err_attribute_weak_static : Error<
   "weak declaration cannot have internal linkage">;
-def warn_attribute_weak_import_invalid_on_definition : Warning<
-  "'weak_import' attribute cannot be specified on a definition">,
+def err_attribute_selectany_non_extern_data : Error<
+  "'selectany' can only be applied to data items with external linkage">;
+def warn_attribute_invalid_on_definition : Warning<
+  "'%0' attribute cannot be specified on a definition">,
   InGroup<IgnoredAttributes>;
 def err_attribute_weakref_not_static : Error<
   "weakref declaration must have internal linkage">;
@@ -1959,6 +2028,12 @@ def err_attribute_weakref_without_alias : Error<
   "weakref declaration of '%0' must also have an alias attribute">;
 def err_alias_not_supported_on_darwin : Error <
   "only weak aliases are supported on darwin">;
+def err_alias_to_undefined : Error<
+  "alias must point to a defined variable or function">;
+def err_duplicate_mangled_name : Error<
+  "definition with same mangled name as another definition">;
+def err_cyclic_alias : Error<
+  "alias definition is part of a cycle">;
 def warn_attribute_wrong_decl_type : Warning<
   "%0 attribute only applies to %select{functions|unions|"
   "variables and functions|functions and methods|parameters|"
@@ -1967,7 +2042,7 @@ def warn_attribute_wrong_decl_type : Warning<
   "variables, functions and labels|fields and global variables|structs|"
   "variables, functions and tag types|thread-local variables|"
   "variables and fields|variables, data members and tag types|"
-  "types and namespaces}1">,
+  "types and namespaces|Objective-C interfaces}1">,
   InGroup<IgnoredAttributes>;
 def err_attribute_wrong_decl_type : Error<
   "%0 attribute only applies to %select{functions|unions|"
@@ -1977,15 +2052,11 @@ def err_attribute_wrong_decl_type : Error<
   "variables, functions and labels|fields and global variables|structs|"
   "variables, functions and tag types|thread-local variables|"
   "variables and fields|variables, data members and tag types|"
-  "types and namespaces}1">;
-def warn_function_attribute_wrong_type : Warning<
-  "'%0' only applies to function types; type here is %1">,
-  InGroup<IgnoredAttributes>;
-def warn_pointer_attribute_wrong_type : Warning<
-  "'%0' only applies to pointer types; type here is %1">,
-  InGroup<IgnoredAttributes>;
-def warn_objc_object_attribute_wrong_type : Warning<
-  "'%0' only applies to Objective-C object or block pointer types; type here is %1">,
+  "types and namespaces|Objective-C interfaces|"
+  "methods and properties|struct or union|struct, union or class}1">;
+def warn_type_attribute_wrong_type : Warning<
+  "'%0' only applies to %select{function|pointer|"
+  "Objective-C object or block pointer}1 types; type here is %2">,
   InGroup<IgnoredAttributes>;
 def warn_attribute_requires_functions_or_static_globals : Warning<
   "%0 only applies to variables with static storage duration and functions">,
@@ -2007,6 +2078,9 @@ def err_cconv_knr : Error<
   "function with no prototype cannot use %0 calling convention">;
 def err_cconv_varargs : Error<
   "variadic function cannot use %0 calling convention">;
+def warn_cconv_varargs : Warning<
+  "%0 calling convention ignored on variadic function">,
+  InGroup<IgnoredAttributes>;
 def err_regparm_mismatch : Error<"function declared with regparm(%0) "
   "attribute was previously declared "
   "%plural{0:without the regparm|:with the regparm(%1)}1 attribute">;
@@ -2148,6 +2222,32 @@ def note_found_mutex_near_match : Note<"found near match '%0'">;
 def warn_thread_safety_beta : Warning<
   "Thread safety beta warning.">, InGroup<ThreadSafetyBeta>, DefaultIgnore;
 
+// Consumed warnings
+def warn_use_in_invalid_state : Warning<
+  "invalid invocation of method '%0' on object '%1' while it is in the '%2' "
+  "state">, InGroup<Consumed>, DefaultIgnore;
+def warn_use_of_temp_in_invalid_state : Warning<
+  "invalid invocation of method '%0' on a temporary object while it is in the "
+  "'%1' state">, InGroup<Consumed>, DefaultIgnore;
+def warn_attr_on_unconsumable_class : Warning<
+  "consumed analysis attribute is attached to member of class '%0' which isn't "
+  "marked as consumable">, InGroup<Consumed>, DefaultIgnore;
+def warn_return_typestate_for_unconsumable_type : Warning<
+  "return state set for an unconsumable type '%0'">, InGroup<Consumed>,
+  DefaultIgnore;
+def warn_return_typestate_mismatch : Warning<
+  "return value not in expected state; expected '%0', observed '%1'">,
+  InGroup<Consumed>, DefaultIgnore;
+def warn_loop_state_mismatch : Warning<
+  "state of variable '%0' must match at the entry and exit of loop">,
+  InGroup<Consumed>, DefaultIgnore;
+def warn_param_return_typestate_mismatch : Warning<
+  "parameter '%0' not in expected state when the function returns: expected "
+  "'%1', observed '%2'">, InGroup<Consumed>, DefaultIgnore;
+def warn_param_typestate_mismatch : Warning<
+  "argument not in expected state; expected '%0', observed '%1'">,
+  InGroup<Consumed>, DefaultIgnore;
+
 def warn_impcast_vector_scalar : Warning<
   "implicit conversion turns vector to scalar: %0 to %1">,
   InGroup<Conversion>, DefaultIgnore;
@@ -2211,9 +2311,17 @@ def warn_cast_align : Warning<
   "cast from %0 to %1 increases required alignment from %2 to %3">,
   InGroup<CastAlign>, DefaultIgnore;
 
+// Separate between casts to void* and non-void* pointers.
+// Some APIs use (abuse) void* for something like a user context,
+// and often that value is an integer even if it isn't a pointer itself.
+// Having a separate warning flag allows users to control the warning
+// for their workflow.
 def warn_int_to_pointer_cast : Warning<
   "cast to %1 from smaller integer type %0">,
   InGroup<IntToPointerCast>;
+def warn_int_to_void_pointer_cast : Warning<
+  "cast to %1 from smaller integer type %0">,
+  InGroup<IntToVoidPointerCast>;
 
 def warn_attribute_ignored_for_field_of_type : Warning<
   "%0 attribute ignored for field of type %1">,
@@ -2238,16 +2346,14 @@ def warn_transparent_union_attribute_zero_fields : Warning<
   "transparent_union attribute ignored">,
   InGroup<IgnoredAttributes>;
 def warn_attribute_type_not_supported : Warning<
-  "'%0' attribute argument not supported: %1">,
+  "%0 attribute argument not supported: %1">,
   InGroup<IgnoredAttributes>;
-def warn_attribute_unknown_visibility : Warning<"unknown visibility '%0'">,
+def warn_attribute_unknown_visibility : Warning<"unknown visibility %0">,
   InGroup<IgnoredAttributes>;
 def warn_attribute_protected_visibility :
   Warning<"target does not support 'protected' visibility; using 'default'">,
   InGroup<DiagGroup<"unsupported-visibility">>;
 def err_mismatched_visibility: Error<"visibility does not match previous declaration">;
-def warn_attribute_unknown_endian : Warning<"unknown endian '%0'">,
-  InGroup<IgnoredAttributes>;
 def note_previous_attribute : Note<"previous attribute is here">;
 def err_unknown_machine_mode : Error<"unknown machine mode %0">;
 def err_unsupported_machine_mode : Error<"unsupported machine mode %0">;
@@ -2273,10 +2379,12 @@ def err_attribute_sentinel_less_than_zero : Error<
   "'sentinel' parameter 1 less than zero">;
 def err_attribute_sentinel_not_zero_or_one : Error<
   "'sentinel' parameter 2 not 0 or 1">;
-def err_attribute_cleanup_arg_not_found : Error<
-  "'cleanup' argument %0 not found">;
+def warn_cleanup_ext : Warning<
+  "GCC does not allow the 'cleanup' attribute argument to be anything other "
+  "than a simple identifier">, 
+  InGroup<GccCompat>;
 def err_attribute_cleanup_arg_not_function : Error<
-  "'cleanup' argument %0 is not a function">;
+  "'cleanup' argument %select{|%1 |%1 }0is not a %select{||single }0function">;
 def err_attribute_cleanup_func_must_take_one_arg : Error<
   "'cleanup' function %0 must take 1 parameter">;
 def err_attribute_cleanup_func_arg_incompatible_type : Error<
@@ -2297,10 +2405,15 @@ def warn_attribute_ibaction: Warning<
   InGroup<IgnoredAttributes>;
 def err_iboutletcollection_type : Error<
   "invalid type %0 as argument of iboutletcollection attribute">;
+def err_iboutletcollection_builtintype : Error<
+  "type argument of iboutletcollection attribute cannot be a builtin type">;
 def warn_iboutlet_object_type : Warning<
   "%select{instance variable|property}2 with %0 attribute must "
-  "be an object type (invalid %1)">,
-  InGroup<DiagGroup<"invalid-iboutlet">>;
+  "be an object type (invalid %1)">, InGroup<ObjCInvalidIBOutletProperty>;
+def warn_iboutletcollection_property_assign : Warning<
+  "IBOutletCollection properties should be copy/strong and not assign">,
+  InGroup<ObjCInvalidIBOutletProperty>;
+  
 def err_attribute_overloadable_not_function : Error<
   "'overloadable' attribute can only be applied to a function">;
 def err_attribute_overloadable_missing : Error<
@@ -2311,7 +2424,7 @@ def note_attribute_overloadable_prev_overload : Note<
 def err_attribute_overloadable_no_prototype : Error<
   "'overloadable' function %0 must have a prototype">;
 def warn_ns_attribute_wrong_return_type : Warning<
-  "%0 attribute only applies to %select{functions|methods}1 that "
+  "%0 attribute only applies to %select{functions|methods|properties}1 that "
   "return %select{an Objective-C object|a pointer|a non-retainable pointer}2">,
   InGroup<IgnoredAttributes>;
 def warn_ns_attribute_wrong_parameter_type : Warning<
@@ -2326,6 +2439,18 @@ def note_protocol_decl : Note<
 
 def err_ns_bridged_not_interface : Error<
   "parameter of 'ns_bridged' attribute does not name an Objective-C class">;
+  
+// objc_bridge attribute diagnostics.
+def err_objc_bridge_not_id : Error<
+  "parameter of 'objc_bridge' attribute must be a single name of an Objective-C class">;
+def err_objc_cf_bridged_not_interface : Error<
+  "CF object of type %0 is bridged to '%1', which is not an Objective-C class">;
+def err_objc_ns_bridged_invalid_cfobject : Error<
+  "ObjectiveC object of type %0 is bridged to %1, which is not valid CF object">;
+def warn_objc_invalid_bridge : Warning<
+  "%0 bridges to %1, not %2">, InGroup<ObjCBridge>;
+def warn_objc_invalid_bridge_to_cf : Warning<
+  "%0 cannot bridge to %1">, InGroup<ObjCBridge>;
 
 // Function Parameter Semantic Analysis.
 def err_param_with_void_type : Error<"argument may not have 'void' type">;
@@ -2366,8 +2491,8 @@ def err_param_default_argument_member_template_redecl : Error<
   "of a %select{class template|class template partial specialization|nested "
   "class in a template}0">;
 def err_uninitialized_member_for_assign : Error<
-  "cannot define the implicit default assignment operator for %0, because "
-  "non-static %select{reference|const}1 member %2 can't use default "
+  "cannot define the implicit copy assignment operator for %0, because "
+  "non-static %select{reference|const}1 member %2 can't use copy "
   "assignment operator">;
 def err_uninitialized_member_in_ctor : Error<
   "%select{|implicit default |inheriting }0constructor for %1 must explicitly "
@@ -2688,6 +2813,7 @@ def err_ovl_ambiguous_oper_unary : Error<
 def err_ovl_ambiguous_oper_binary : Error<
   "use of overloaded operator '%0' is ambiguous (with operand types %1 and %2)">;
 def err_ovl_no_viable_oper : Error<"no viable overloaded '%0'">;
+def note_assign_lhs_incomplete : Note<"type %0 is incomplete">;
 def err_ovl_deleted_oper : Error<
   "overload resolution selected %select{unavailable|deleted}0 operator '%1'%2">;
 def err_ovl_deleted_special_oper : Error<
@@ -2731,7 +2857,8 @@ def err_addr_ovl_no_qualifier : Error<
 def err_ovl_no_viable_literal_operator : Error<
   "no matching literal operator for call to %0"
   "%select{| with argument of type %2| with arguments of types %2 and %3}1"
-  "%select{| or 'const char *', and no matching literal operator template}4">;
+  "%select{| or 'const char *'}4"
+  "%select{|, and no matching literal operator template}5">;
 
 // C++ Template Declarations
 def err_template_param_shadow : Error<
@@ -2741,6 +2868,8 @@ def warn_template_export_unsupported : Warning<
   "exported templates are unsupported">;
 def err_template_outside_namespace_or_class_scope : Error<
   "templates can only be declared in namespace or class scope">;
+def err_template_inside_local_class : Error<
+  "templates cannot be declared inside of a local class">;
 def err_template_linkage : Error<"templates must have C++ linkage">;
 def err_template_typedef : Error<"a typedef cannot be a template">;
 def err_template_unnamed_class : Error<
@@ -2789,7 +2918,11 @@ def err_template_parameter_default_friend_template : Error<
 def err_template_template_parm_no_parms : Error<
   "template template parameter must have its own template parameters">;
 
-def err_template_variable : Error<"variable %0 declared as a template">;
+def ext_variable_template : ExtWarn<"variable templates are a C++1y extension">,
+  InGroup<CXX1y>;
+def warn_cxx11_compat_variable_template : Warning<
+  "variable templates are incompatible with C++ standards before C++1y">,
+  InGroup<CXXPre1yCompat>, DefaultIgnore;
 def err_template_variable_noparams : Error<
   "extraneous 'template<>' in declaration of variable %0">;
 def err_template_member : Error<"member %0 declared as a template">;
@@ -2798,7 +2931,7 @@ def err_template_member_noparams : Error<
 def err_template_tag_noparams : Error<
   "extraneous 'template<>' in declaration of %0 %1">;
 def err_template_decl_ref : Error<
-  "cannot refer to class template %0 without a template argument list">;
+  "cannot refer to %select{class|variable}0 template %1 without a template argument list">;
 
 // C++ Template Argument Lists
 def err_template_missing_args : Error<
@@ -2879,9 +3012,6 @@ def err_template_arg_ref_bind_ignores_quals : Error<
   "ignores qualifiers">;
 def err_template_arg_not_decl_ref : Error<
   "non-type template argument does not refer to any declaration">;
-def err_template_arg_not_object_or_func_form : Error<
-  "non-type template argument does not directly refer to an object or "
-  "function">;
 def err_template_arg_not_address_of : Error<
   "non-type template argument for template parameter of pointer type %0 must "
   "have its address taken">;
@@ -2926,11 +3056,14 @@ def err_pointer_to_member_call_drops_quals : Error<
 def err_pointer_to_member_oper_value_classify: Error<
   "pointer-to-member function type %0 can only be called on an "
   "%select{rvalue|lvalue}1">;
+def ext_ms_deref_template_argument: ExtWarn<
+  "non-type template argument containing a dereference operation is a "
+  "Microsoft extension">, InGroup<Microsoft>;
 
 // C++ template specialization
 def err_template_spec_unknown_kind : Error<
   "can only provide an explicit specialization for a class template, function "
-  "template, or a member function, static data member, "
+  "template, variable template, or a member function, static data member, "
   "%select{or member class|member class, or member enumeration}0 of a "
   "class template">;
 def note_specialized_entity : Note<
@@ -2942,29 +3075,35 @@ def err_template_spec_decl_class_scope : Error<
 def err_template_spec_decl_friend : Error<
   "cannot declare an explicit specialization in a friend">;
 def err_template_spec_decl_out_of_scope_global : Error<
-  "%select{class template|class template partial|function template|member "
-  "function|static data member|member class|member enumeration}0 "
+  "%select{class template|class template partial|variable template|"
+  "variable template partial|function template|member function|"
+  "static data member|member class|member enumeration}0 "
   "specialization of %1 must originally be declared in the global scope">;
 def err_template_spec_decl_out_of_scope : Error<
-  "%select{class template|class template partial|function template|member "
+  "%select{class template|class template partial|variable template|"
+  "variable template partial|function template|member "
   "function|static data member|member class|member enumeration}0 "
   "specialization of %1 must originally be declared in namespace %2">;
 def ext_template_spec_decl_out_of_scope : ExtWarn<
   "first declaration of %select{class template|class template partial|"
+  "variable template|variable template partial|"
   "function template|member function|static data member|member class|"
   "member enumeration}0 specialization of %1 outside namespace %2 is a "
   "C++11 extension">, InGroup<CXX11>;
 def warn_cxx98_compat_template_spec_decl_out_of_scope : Warning<
-  "%select{class template|class template partial|function template|member "
+  "%select{class template|class template partial|variable template|"
+  "variable template partial|function template|member "
   "function|static data member|member class|member enumeration}0 "
   "specialization of %1 outside namespace %2 is incompatible with C++98">,
   InGroup<CXX98Compat>, DefaultIgnore;
 def err_template_spec_redecl_out_of_scope : Error<
-  "%select{class template|class template partial|function template|member "
+  "%select{class template|class template partial|variable template|"
+  "variable template partial|function template|member "
   "function|static data member|member class|member enumeration}0 "
   "specialization of %1 not in a namespace enclosing %2">;
 def err_template_spec_redecl_global_scope : Error<
-  "%select{class template|class template partial|function template|member "
+  "%select{class template|class template partial|variable template|"
+  "variable template partial|function template|member "
   "function|static data member|member class|member enumeration}0 "
   "specialization of %1 must occur at global scope">;
 def err_spec_member_not_instantiated : Error<
@@ -3029,12 +3168,12 @@ def err_dependent_typed_non_type_arg_in_partial_spec : Error<
     "non-type template argument specializes a template parameter with "
     "dependent type %0">;
 def err_partial_spec_args_match_primary_template : Error<
-    "class template partial specialization does not specialize any template "
-    "argument; to %select{declare|define}0 the primary template, remove the "
-    "template argument list">; 
+    "%select{class|variable}0 template partial specialization does not "
+    "specialize any template argument; to %select{declare|define}1 the "
+    "primary template, remove the template argument list">; 
 def warn_partial_specs_not_deducible : Warning<
-    "class template partial specialization contains "
-    "%select{a template parameter|template parameters}0 that can not be "
+    "%select{class|variable}0 template partial specialization contains "
+    "%select{a template parameter|template parameters}1 that can not be "
     "deduced; this partial specialization will never be used">;
 def note_partial_spec_unused_parameter : Note<
     "non-deducible template parameter %0">;
@@ -3047,6 +3186,14 @@ def note_prev_partial_spec_here : Note<
   "previous declaration of class template partial specialization %0 is here">;
 def err_partial_spec_fully_specialized : Error<
   "partial specialization of %0 does not use any of its template parameters">;
+
+// C++ Variable Template Partial Specialization
+def err_var_partial_spec_redeclared : Error<
+  "variable template partial specialization %0 cannot be redefined">;
+def note_var_prev_partial_spec_here : Note<
+  "previous declaration of variable template partial specialization is here">;
+def err_var_spec_no_template : Error<
+  "no variable template matches%select{| partial}0 specialization">;
   
 // C++ Function template specializations
 def err_function_template_spec_no_match : Error<
@@ -3084,6 +3231,8 @@ def note_function_template_spec_here : Note<
   "in instantiation of function template specialization %q0 requested here">;
 def note_template_static_data_member_def_here : Note<
   "in instantiation of static data member %q0 requested here">;
+def note_template_variable_def_here : Note<
+  "in instantiation of variable template specialization %q0 requested here">;
 def note_template_enum_def_here : Note<
   "in instantiation of enumeration %q0 requested here">;
 def note_template_type_alias_instantiation_here : Note<
@@ -3160,8 +3309,8 @@ def err_explicit_instantiation_of_typedef : Error<
 def err_explicit_instantiation_storage_class : Error<
   "explicit instantiation cannot have a storage class">;
 def err_explicit_instantiation_not_known : Error<
-  "explicit instantiation of %0 does not refer to a function template, member "
-  "function, member class, or static data member">;
+  "explicit instantiation of %0 does not refer to a function template, "
+  "variable template, member function, member class, or static data member">;
 def note_explicit_instantiation_here : Note<
   "explicit instantiation refers here">;
 def err_explicit_instantiation_data_member_not_instantiated : Error<
@@ -3184,6 +3333,8 @@ def err_explicit_instantiation_constexpr : Error<
 def ext_explicit_instantiation_without_qualified_id : Extension<
   "qualifier in explicit instantiation of %q0 requires a template-id "
   "(a typedef is not permitted)">;
+def err_explicit_instantiation_without_template_id : Error<
+  "explicit instantiation of %q0 must specify a template argument list">;
 def err_explicit_instantiation_unqualified_wrong_namespace : Error<
   "explicit instantiation of %q0 must occur in namespace %1">;
 def warn_explicit_instantiation_unqualified_wrong_namespace_0x : Warning<
@@ -3194,11 +3345,17 @@ def err_explicit_instantiation_undefined_member : Error<
   "static data member}0 %1 of class template %2">;
 def err_explicit_instantiation_undefined_func_template : Error<
   "explicit instantiation of undefined function template %0">;
+def err_explicit_instantiation_undefined_var_template : Error<
+  "explicit instantiation of undefined variable template %q0">;
 def err_explicit_instantiation_declaration_after_definition : Error<
   "explicit instantiation declaration (with 'extern') follows explicit "
   "instantiation definition (without 'extern')">;
 def note_explicit_instantiation_definition_here : Note<
   "explicit instantiation definition is here">;
+def err_invalid_var_template_spec_type : Error<"type %2 "
+  "of %select{explicit instantiation|explicit specialization|"
+  "partial specialization|redeclaration}0 of %1 does not match"
+  " expected type %3">;
   
 // C++ typename-specifiers
 def err_typename_nested_not_found : Error<"no type named %0 in %1">;
@@ -3244,7 +3401,8 @@ def err_non_type_template_in_nested_name_specifier : Error<
 def err_template_id_not_a_type : Error<
   "template name refers to non-type template %0">;
 def note_template_declared_here : Note<
-  "%select{function template|class template|type alias template|template template parameter}0 "
+  "%select{function template|class template|variable template"
+  "|type alias template|template template parameter}0 "
   "%1 declared here">;
 def note_parameter_type : Note<
   "parameter of type %0 is declared here">;
@@ -3350,6 +3508,10 @@ def note_unavailable_here : Note<
   "%select{unavailable|deleted|deprecated}1 here">;
 def note_implicitly_deleted : Note<
   "explicitly defaulted function was implicitly deleted here">;
+def note_inherited_deleted_here : Note<
+  "deleted constructor was inherited here">;
+def note_cannot_inherit : Note<
+  "constructor cannot be inherited">;
 def warn_not_enough_argument : Warning<
   "not enough variable arguments in %0 declaration to fit a sentinel">,
   InGroup<Sentinel>;
@@ -3367,10 +3529,14 @@ def warn_missing_variable_declarations : Warning<
   "no previous extern declaration for non-static variable %0">,
   InGroup<DiagGroup<"missing-variable-declarations">>, DefaultIgnore;
 def err_redefinition : Error<"redefinition of %0">;
+def err_alias_after_tentative :
+  Error<"alias definition of %0 after tentative definition">;
+def err_tentative_after_alias :
+  Error<"tentative definition of %0 after alias definition">;
 def err_definition_of_implicitly_declared_member : Error<
   "definition of implicitly declared %select{default constructor|copy "
   "constructor|move constructor|copy assignment operator|move assignment "
-  "operator|destructor}1">;
+  "operator|destructor|function}1">;
 def err_definition_of_explicitly_defaulted_member : Error<
   "definition of explicitly defaulted %select{default constructor|copy "
   "constructor|move constructor|copy assignment operator|move assignment "
@@ -3444,6 +3610,14 @@ def err_static_non_static : Error<
   "static declaration of %0 follows non-static declaration">;
 def err_different_language_linkage : Error<
   "declaration of %0 has a different language linkage">;
+def ext_retained_language_linkage : Extension<
+  "friend function %0 retaining previous language linkage is an extension">,
+  InGroup<DiagGroup<"retained-language-linkage">>;
+def err_extern_c_global_conflict : Error<
+  "declaration of %1 %select{with C language linkage|in global scope}0 "
+  "conflicts with declaration %select{in global scope|with C language linkage}0">;
+def note_extern_c_global_conflict : Note<
+  "declared %select{in global scope|with C language linkage}0 here">;
 def warn_weak_import : Warning <
   "an already-declared variable is made a weak_import declaration %0">;
 def warn_static_non_static : ExtWarn<
@@ -3503,7 +3677,7 @@ def err_forward_ref_enum : Error<
 def ext_ms_forward_ref_enum : Extension<
   "forward references to 'enum' types are a Microsoft extension">, InGroup<Microsoft>;
 def ext_forward_ref_enum_def : Extension<
-  "redeclaration of already-defined enum %0 is a GNU extension">, InGroup<GNU>;
+  "redeclaration of already-defined enum %0 is a GNU extension">, InGroup<GNURedeclaredEnum>;
   
 def err_redefinition_of_enumerator : Error<"redefinition of enumerator %0">;
 def err_duplicate_member : Error<"duplicate member %0">;
@@ -3574,6 +3748,8 @@ def warn_typecheck_zero_static_array_size : Warning<
 def err_array_size_non_int : Error<"size of array has non-integer type %0">;
 def err_init_element_not_constant : Error<
   "initializer element is not a compile-time constant">;
+def ext_aggregate_init_not_constant : Extension<
+  "initializer for aggregate is not a compile-time constant">, InGroup<C99>;
 def err_local_cant_init : Error<
   "'__local' variable cannot have an initializer">;
 def err_block_extern_cant_init : Error<
@@ -3620,22 +3796,15 @@ def warn_cxx98_compat_ctor_list_init : Warning<
 def err_illegal_initializer : Error<
   "illegal initializer (only variables can be initialized)">;
 def err_illegal_initializer_type : Error<"illegal initializer type %0">;
-def err_init_list_type_narrowing_sfinae : Error<
-  "type %0 cannot be narrowed to %1 in initializer list">;
-def err_init_list_type_narrowing : ExtWarn<
+def ext_init_list_type_narrowing : ExtWarn<
   "type %0 cannot be narrowed to %1 in initializer list">, 
-  InGroup<CXX11Narrowing>, DefaultError;
-def err_init_list_variable_narrowing_sfinae : Error<
-  "non-constant-expression cannot be narrowed from type %0 to %1 in "
-  "initializer list">;
-def err_init_list_variable_narrowing : ExtWarn<
+  InGroup<CXX11Narrowing>, DefaultError, SFINAEFailure;
+def ext_init_list_variable_narrowing : ExtWarn<
   "non-constant-expression cannot be narrowed from type %0 to %1 in "
-  "initializer list">, InGroup<CXX11Narrowing>, DefaultError;
-def err_init_list_constant_narrowing_sfinae : Error<
-  "constant expression evaluates to %0 which cannot be narrowed to type %1">;
-def err_init_list_constant_narrowing : ExtWarn<
+  "initializer list">, InGroup<CXX11Narrowing>, DefaultError, SFINAEFailure;
+def ext_init_list_constant_narrowing : ExtWarn<
   "constant expression evaluates to %0 which cannot be narrowed to type %1">,
-  InGroup<CXX11Narrowing>, DefaultError;
+  InGroup<CXX11Narrowing>, DefaultError, SFINAEFailure;
 def warn_init_list_type_narrowing : Warning<
   "type %0 cannot be narrowed to %1 in initializer list in C++11">,
   InGroup<CXX11Narrowing>, DefaultIgnore;
@@ -3676,9 +3845,6 @@ def warn_anon_bitfield_width_exceeds_type_size : Warning<
 def warn_missing_braces : Warning<
   "suggest braces around initialization of subobject">,
   InGroup<MissingBraces>, DefaultIgnore;
-def err_missing_braces : Error<
-  "cannot omit braces around initialization of subobject when using direct "
-  "list-initialization">;
 
 def err_redefinition_of_label : Error<"redefinition of label %0">;
 def err_undeclared_label_use : Error<"use of undeclared label %0">;
@@ -3778,10 +3944,16 @@ def err_field_declared_as_function : Error<"field %0 declared as a function">;
 def err_field_incomplete : Error<"field has incomplete type %0">;
 def ext_variable_sized_type_in_struct : ExtWarn<
   "field %0 with variable sized type %1 not at the end of a struct or class is"
-  " a GNU extension">, InGroup<GNU>;
-
-def err_flexible_array_empty_struct : Error<
-  "flexible array %0 not allowed in otherwise empty struct">;
+  " a GNU extension">, InGroup<GNUVariableSizedTypeNotAtEnd>;
+
+def ext_c99_flexible_array_member : Extension<
+  "flexible array members are a C99 feature">, InGroup<C99>;
+def err_flexible_array_virtual_base : Error<
+  "flexible array member %0 not allowed in "
+  "%select{struct|interface|union|class|enum}1 which has a virtual base class">;
+def err_flexible_array_empty_aggregate : Error<
+  "flexible array member %0 not allowed in otherwise empty "
+  "%select{struct|interface|union|class|enum}1">;
 def err_flexible_array_has_nonpod_type : Error<
   "flexible array member %0 of non-POD element type %1">;
 def ext_flexible_array_in_struct : Extension<
@@ -3796,15 +3968,17 @@ def ext_flexible_array_empty_aggregate_ms : Extension<
   "flexible array member %0 in otherwise empty "
   "%select{struct|interface|union|class|enum}1 is a Microsoft extension">,
   InGroup<Microsoft>;
+def err_flexible_array_union : Error<
+  "flexible array member %0 in a union is not allowed">;
 def ext_flexible_array_union_ms : Extension<
   "flexible array member %0 in a union is a Microsoft extension">,
   InGroup<Microsoft>;
 def ext_flexible_array_empty_aggregate_gnu : Extension<
   "flexible array member %0 in otherwise empty "
   "%select{struct|interface|union|class|enum}1 is a GNU extension">,
-  InGroup<GNU>;
+  InGroup<GNUEmptyStruct>;
 def ext_flexible_array_union_gnu : Extension<
-  "flexible array member %0 in a union is a GNU extension">, InGroup<GNU>;
+  "flexible array member %0 in a union is a GNU extension">, InGroup<GNUFlexibleArrayUnionMember>;
 
 let CategoryName = "ARC Semantic Issue" in {
 
@@ -3852,7 +4026,7 @@ def err_arc_objc_property_default_assign_on_object : Error<
 def err_arc_illegal_selector : Error<
   "ARC forbids use of %0 in a @selector">;
 def err_arc_illegal_method_def : Error<
-  "ARC forbids implementation of %0">;
+  "ARC forbids %select{implementation|synthesis}0 of %1">;
 def warn_arc_strong_pointer_objc_pointer : Warning<
   "method parameter of type %0 with no explicit ownership">,
   InGroup<DiagGroup<"explicit-ownership-type">>, DefaultIgnore;
@@ -4053,6 +4227,9 @@ def ext_sizeof_alignof_void_type : Extension<
 def err_sizeof_alignof_incomplete_type : Error<
   "invalid application of '%select{sizeof|alignof|vec_step}0' to an "
   "incomplete type %1">;
+def err_sizeof_alignof_function_type : Error<
+  "invalid application of '%select{sizeof|alignof|vec_step}0' to a "
+  "function type">;
 def err_sizeof_alignof_bitfield : Error<
   "invalid application of '%select{sizeof|alignof}0' to bit-field">;
 def err_alignof_member_of_incomplete_type : Error<
@@ -4072,6 +4249,11 @@ def warn_offsetof_non_pod_type : ExtWarn<"offset of on non-POD type %0">,
 def warn_offsetof_non_standardlayout_type : ExtWarn<
   "offset of on non-standard-layout type %0">, InGroup<InvalidOffsetof>;
 def err_offsetof_bitfield : Error<"cannot compute offset of bit-field %0">;
+def err_offsetof_field_of_virtual_base : Error<
+  "invalid application of 'offsetof' to a field of a virtual base">;
+def warn_sub_ptr_zero_size_types : Warning<
+  "subtraction of pointers to type %0 of zero size has undefined behavior">,
+  InGroup<PointerArith>;
 
 def warn_floatingpoint_eq : Warning<
   "comparing floating point with == or != is unsafe">,
@@ -4139,7 +4321,10 @@ def warn_self_assignment : Warning<
 def warn_string_plus_int : Warning<
   "adding %0 to a string does not append to the string">,
   InGroup<StringPlusInt>;
-def note_string_plus_int_silence : Note<
+def warn_string_plus_char : Warning<
+  "adding %0 to a string pointer does not append to the string">,
+  InGroup<StringPlusChar>;
+def note_string_plus_scalar_silence : Note<
   "use array indexing to silence this warning">;
 
 def warn_sizeof_array_param : Warning<
@@ -4189,6 +4374,10 @@ def err_typecheck_member_reference_arrow : Error<
   "member reference type %0 is not a pointer">;
 def err_typecheck_member_reference_suggestion : Error<
   "member reference type %0 is %select{a|not a}1 pointer; maybe you meant to use '%select{->|.}1'?">;
+def note_typecheck_member_reference_suggestion : Note<
+  "did you mean to use '.' instead?">;
+def note_member_reference_arrow_from_operator_arrow : Note<
+  "'->' applied to return value of the operator->() declared here">;
 def err_typecheck_member_reference_type : Error<
   "cannot refer to type member %0 in %1 with '%select{.|->}2'">;
 def err_typecheck_member_reference_unknown : Error<
@@ -4215,20 +4404,28 @@ def note_enum_specialized_here : Note<
   "enum %0 was explicitly specialized here">;
 
 def err_member_redeclared : Error<"class member cannot be redeclared">;
+def ext_member_redeclared : ExtWarn<"class member cannot be redeclared">,
+  InGroup<RedeclaredClassMember>;
 def err_member_redeclared_in_instantiation : Error<
   "multiple overloads of %0 instantiate to the same signature %1">;
 def err_member_name_of_class : Error<"member %0 has the same name as its class">;
 def err_member_def_undefined_record : Error<
   "out-of-line definition of %0 from class %1 without definition">;
-def err_member_def_does_not_match : Error<
-  "out-of-line definition of %0 does not match any declaration in %1">;
+def err_member_decl_does_not_match : Error<
+  "out-of-line %select{declaration|definition}2 of %0 "
+  "does not match any declaration in %1">;
+def err_friend_decl_with_def_arg_must_be_def : Error<
+  "friend declaration specifying a default argument must be a definition">;
+def err_friend_decl_with_def_arg_redeclared : Error<
+  "friend declaration specifying a default argument must be the only declaration">;
 def err_friend_decl_does_not_match : Error<
   "friend declaration of %0 does not match any declaration in %1">;
-def err_member_def_does_not_match_suggest : Error<
-  "out-of-line definition of %0 does not match any declaration in %1; "
-  "did you mean %2?">;
+def err_member_decl_does_not_match_suggest : Error<
+  "out-of-line %select{declaration|definition}2 of %0 "
+  "does not match any declaration in %1; did you mean %3?">;
 def err_member_def_does_not_match_ret_type : Error<
-  "out-of-line definition of %q0 differs from the declaration in the return type">;
+  "return type of out-of-line definition of %q0 differs from "
+  "that in the declaration">;
 def err_nonstatic_member_out_of_line : Error<
   "non-static data member defined out-of-line">;
 def err_qualified_typedef_declarator : Error<
@@ -4251,6 +4448,10 @@ def note_member_def_close_const_match : Note<
 def note_member_def_close_param_match : Note<
   "type of %ordinal0 parameter of member declaration does not match definition"
   "%diff{ ($ vs $)|}1,2">;
+def note_local_decl_close_match : Note<"local declaration nearly matches">;
+def note_local_decl_close_param_match : Note<
+  "type of %ordinal0 parameter of local declaration does not match definition"
+  "%diff{ ($ vs $)|}1,2">;
 def err_typecheck_ivar_variable_size : Error<
   "instance variables must have a constant size">;
 def err_ivar_reference_type : Error<
@@ -4266,13 +4467,13 @@ def err_typecheck_pointer_arith_void_type : Error<
   "arithmetic on%select{ a|}0 pointer%select{|s}0 to void">;
 def err_typecheck_decl_incomplete_type : Error<
   "variable has incomplete type %0">;
+def err_typecheck_decl_incomplete_type___float128 : Error<
+  "support for type '__float128' is not yet implemented">;
 def ext_typecheck_decl_incomplete_type : ExtWarn<
   "tentative definition of variable with internal linkage has incomplete non-array type %0">,
   InGroup<DiagGroup<"tentative-definition-incomplete-type">>;
 def err_tentative_def_incomplete_type : Error<
   "tentative definition has type %0 that is never completed">;
-def err_tentative_def_incomplete_type_arr : Error<
-  "tentative definition has array of type %0 that is never completed">;
 def warn_tentative_incomplete_array : Warning<
   "tentative array definition assumed to have one element">;
 def err_typecheck_incomplete_array_needs_initializer : Error<
@@ -4280,7 +4481,13 @@ def err_typecheck_incomplete_array_needs_initializer : Error<
   "or an initializer">;
 def err_array_init_not_init_list : Error<
   "array initializer must be an initializer "
-  "list%select{| or string literal}0">;
+  "list%select{| or string literal| or wide string literal}0">;
+def err_array_init_narrow_string_into_wchar : Error<
+  "initializing wide char array with non-wide string literal">;
+def err_array_init_wide_string_into_char : Error<
+  "initializing char array with wide string literal">;
+def err_array_init_incompat_wide_string_into_wchar : Error<
+  "initializing wide char array with incompatible wide string literal">;
 def err_array_init_different_type : Error<
   "cannot initialize array %diff{of type $ with array of type $|"
   "with different type of array}0,1">;
@@ -4290,13 +4497,16 @@ def err_array_init_non_constant_array : Error<
 def ext_array_init_copy : Extension<
   "initialization of an array "
   "%diff{of type $ from a compound literal of type $|"
-  "from a compound literal}0,1 is a GNU extension">, InGroup<GNU>;
+  "from a compound literal}0,1 is a GNU extension">, InGroup<GNUCompoundLiteralInitializer>;
 // This is intentionally not disabled by -Wno-gnu.
 def ext_array_init_parens : ExtWarn<
   "parenthesized initialization of a member array is a GNU extension">,
   InGroup<DiagGroup<"gnu-array-member-paren-init">>, DefaultError;
 def warn_deprecated_string_literal_conversion : Warning<
-  "conversion from string literal to %0 is deprecated">, InGroup<DeprecatedWritableStr>;
+  "conversion from string literal to %0 is deprecated">,
+  InGroup<CXX11CompatDeprecatedWritableStr>;
+def warn_deprecated_string_literal_conversion_c : Warning<
+  "dummy warning to enable -fconst-strings">, InGroup<DeprecatedWritableStr>, DefaultIgnore;
 def err_realimag_invalid_type : Error<"invalid type %0 to %1 operator">;
 def err_typecheck_sclass_fscope : Error<
   "illegal storage class on file-scoped variable">;
@@ -4331,6 +4541,8 @@ def ext_typecheck_addrof_temporary : ExtWarn<
   InGroup<DiagGroup<"address-of-temporary">>, DefaultError;
 def err_typecheck_addrof_temporary : Error<
   "taking the address of a temporary object of type %0">;
+def err_typecheck_addrof_dtor : Error<
+  "taking the address of a destructor">;
 def err_typecheck_unary_expr : Error<
   "invalid argument type %0 to unary expression">;
 def err_typecheck_indirection_requires_pointer : Error<
@@ -4405,6 +4617,14 @@ def warn_null_in_comparison_operation : Warning<
   "%select{(%1 and NULL)|(NULL and %1)}0">,
   InGroup<NullArithmetic>;
 
+def warn_logical_not_on_lhs_of_comparison : Warning<
+  "logical not is only applied to the left hand side of this comparison">,
+  InGroup<LogicalNotParentheses>;
+def note_logical_not_fix : Note<
+  "add parentheses after the '!' to evaluate the comparison first">;
+def note_logical_not_silence_with_parens : Note<
+  "add parentheses around left hand side expression to silence this warning">;
+
 def err_invalid_this_use : Error<
   "invalid use of 'this' outside of a non-static member function">;
 def err_this_static_member_func : Error<
@@ -4547,6 +4767,15 @@ def warn_instance_method_on_class_found : Warning<
 def warn_inst_method_not_found : Warning<
   "instance method %objcinstance0 not found (return type defaults to 'id')">,
   InGroup<MethodAccess>;
+def warn_instance_method_not_found_with_typo : Warning<
+  "instance method %objcinstance0 not found (return type defaults to 'id')"
+  "; did you mean %objcinstance2?">, InGroup<MethodAccess>;
+def warn_class_method_not_found_with_typo : Warning<
+  "class method %objcclass0 not found (return type defaults to 'id')"
+  "; did you mean %objcclass2?">, InGroup<MethodAccess>;
+def error_method_not_found_with_typo : Error<
+  "%select{instance|class}1 method %0 not found "
+  "; did you mean %2?">;
 def error_no_super_class_message : Error<
   "no @interface declaration found in class messaging of %0">;
 def error_root_class_cannot_use_super : Error<
@@ -4561,6 +4790,7 @@ def warn_bad_receiver_type : Warning<
   "receiver type %0 is not 'id' or interface pointer, consider "
   "casting it to 'id'">,InGroup<ObjCReceiver>;
 def err_bad_receiver_type : Error<"bad receiver type %0">;
+def err_incomplete_receiver_type : Error<"incomplete receiver type %0">;
 def err_unknown_receiver_suggest : Error<
   "unknown receiver %0; did you mean %1?">;
 def error_objc_throw_expects_object : Error<
@@ -4602,6 +4832,8 @@ def note_parameter_named_here : Note<
   "passing argument to parameter %0 here">;
 def note_parameter_here : Note<
   "passing argument to parameter here">;
+def note_method_return_type_change : Note<
+  "compiler has implicitly changed method %0 return type">;
 
 // C++ casts
 // These messages adhere to the TryCast pattern: %0 is an int specifying the
@@ -4695,6 +4927,8 @@ def err_need_header_before_ms_uuidof : Error<
   "you need to include <guiddef.h> before using the '__uuidof' operator">;
 def err_uuidof_without_guid : Error<
   "cannot call operator __uuidof on a type with no GUID">;
+def err_uuidof_with_multiple_guids : Error<
+  "cannot call operator __uuidof on a type with multiple GUIDs">;
 def err_incomplete_typeid : Error<"'typeid' of incomplete type %0">;
 def err_static_illegal_in_new : Error<
   "the 'static' modifier for the array size is not legal in new expressions">;
@@ -4744,13 +4978,17 @@ def err_default_init_const : Error<
 def err_delete_operand : Error<"cannot delete expression of type %0">;
 def ext_delete_void_ptr_operand : ExtWarn<
   "cannot delete expression with pointer-to-'void' type %0">;
-def err_ambiguous_delete_operand : Error<"ambiguous conversion of delete "
-                                         "expression of type %0 to a pointer">;
+def err_ambiguous_delete_operand : Error<
+  "ambiguous conversion of delete expression of type %0 to a pointer">;
 def warn_delete_incomplete : Warning<
   "deleting pointer to incomplete type %0 may cause undefined behavior">,
   InGroup<DiagGroup<"delete-incomplete">>;
 def err_delete_incomplete_class_type : Error<
   "deleting incomplete class type %0; no conversions to pointer type">;
+def err_delete_explicit_conversion : Error<
+  "converting delete expression from type %0 to type %1 invokes an explicit "
+  "conversion function">;
+def note_delete_conversion : Note<"conversion to pointer type %0">;
 def warn_delete_array_type : Warning<
   "'delete' applied to a pointer-to-array type %0 treated as delete[]">;
 def err_no_suitable_delete_member_function_found : Error<
@@ -4761,7 +4999,10 @@ def note_member_declared_here : Note<
   "member %0 declared here">;
 def err_decrement_bool : Error<"cannot decrement expression of type bool">;
 def warn_increment_bool : Warning<
-  "incrementing expression of type bool is deprecated">, InGroup<Deprecated>;
+  "incrementing expression of type bool is deprecated">,
+  InGroup<DeprecatedIncrementBool>;
+def err_increment_decrement_enum : Error<
+  "cannot %select{decrement|increment}0 expression of enum type %1">;
 def err_catch_incomplete_ptr : Error<
   "cannot catch pointer to incomplete type %0">;
 def err_catch_incomplete_ref : Error<
@@ -4848,8 +5089,6 @@ let CategoryName = "Lambda Issue" in {
     "duration">;
   def err_this_capture : Error<
     "'this' cannot be %select{implicitly |}0captured in this context">;
-  def err_lambda_capture_block : Error<
-    "__block variable %0 cannot be captured in a lambda expression">;
   def err_lambda_capture_anonymous_var : Error<
     "unnamed variable cannot be implicitly captured in a lambda expression">;
   def err_lambda_capture_vm_type : Error<
@@ -4864,14 +5103,14 @@ let CategoryName = "Lambda Issue" in {
   def note_lambda_decl : Note<"lambda expression begins here">;
   def err_lambda_unevaluated_operand : Error<
     "lambda expression in an unevaluated operand">;
+  def err_lambda_in_constant_expression : Error<
+    "a lambda expression may not appear inside of a constant expression">;
   def err_lambda_return_init_list : Error<
     "cannot deduce lambda return type from initializer list">;
   def err_lambda_capture_default_arg : Error<
     "lambda expression in default argument cannot capture any entity">;
   def err_lambda_incomplete_result : Error<
     "incomplete result type %0 in lambda expression">;
-  def err_lambda_objc_object_result : Error<
-    "non-pointer Objective-C class type %0 in lambda expression result">;
   def err_noreturn_lambda_has_return_expr : Error<
     "lambda declared 'noreturn' should not return">;
   def warn_maybe_falloff_nonvoid_lambda : Warning<
@@ -4889,13 +5128,41 @@ let CategoryName = "Lambda Issue" in {
   def note_lambda_to_block_conv : Note<
     "implicit capture of lambda object due to conversion to block pointer "
     "here">;
+
+  // C++1y lambda init-captures.
+  def warn_cxx11_compat_init_capture : Warning<
+    "initialized lambda captures are incompatible with C++ standards "
+    "before C++1y">, InGroup<CXXPre1yCompat>, DefaultIgnore;
+  def ext_init_capture : ExtWarn<
+    "initialized lambda captures are a C++1y extension">, InGroup<CXX1y>;
+  def err_init_capture_no_expression : Error<
+    "initializer missing for lambda capture %0">;
+  def err_init_capture_multiple_expressions : Error<
+    "initializer for lambda capture %0 contains multiple expressions">;
+  def err_init_capture_deduction_failure : Error<
+    "cannot deduce type for lambda capture %0 from initializer of type %2">;
+  def err_init_capture_deduction_failure_from_init_list : Error<
+    "cannot deduce type for lambda capture %0 from initializer list">;
 }
 
 def err_return_in_captured_stmt : Error<
   "cannot return from %0">;
+def err_capture_block_variable : Error<
+  "__block variable %0 cannot be captured in a "
+  "%select{lambda expression|captured statement}1">;
 
 def err_operator_arrow_circular : Error<
   "circular pointer delegation detected">;
+def err_operator_arrow_depth_exceeded : Error<
+  "use of 'operator->' on type %0 would invoke a sequence of more than %1 "
+  "'operator->' calls">;
+def note_operator_arrow_here : Note<
+  "'operator->' declared here produces an object of type %0">;
+def note_operator_arrows_suppressed : Note<
+  "(skipping %0 'operator->'%s0 in backtrace)">;
+def note_operator_arrow_depth : Note<
+  "use -foperator-arrow-depth=N to increase 'operator->' limit">;
+
 def err_pseudo_dtor_base_not_scalar : Error<
   "object expression of non-scalar type %0 cannot be used in a "
   "pseudo-destructor expression">;
@@ -4926,6 +5193,8 @@ def err_typecheck_ambiguous_condition : Error<
   "conversion %diff{from $ to $|between types}0,1 is ambiguous">;
 def err_typecheck_nonviable_condition : Error<
   "no viable conversion%diff{ from $ to $|}0,1">;
+def err_typecheck_nonviable_condition_incomplete : Error<
+  "no viable conversion%diff{ from $ to incomplete type $|}0,1">;
 def err_typecheck_deleted_function : Error<
   "conversion function %diff{from $ to $|between types}0,1 "
   "invokes a deleted function">;
@@ -4939,11 +5208,15 @@ def err_invalid_declarator_global_scope : Error<
   "definition or redeclaration of %0 cannot name the global scope">;
 def err_invalid_declarator_in_function : Error<
   "definition or redeclaration of %0 not allowed inside a function">;
+def err_invalid_declarator_in_block : Error<
+  "definition or redeclaration of %0 not allowed inside a block">;
 def err_not_tag_in_scope : Error<
   "no %select{struct|interface|union|class|enum}0 named %1 in %2">;
 
 def err_no_typeid_with_fno_rtti : Error<
   "cannot use typeid with -fno-rtti">;
+def err_no_dynamic_cast_with_fno_rtti : Error<
+  "cannot use dynamic_cast with -fno-rtti">;
 
 def err_cannot_form_pointer_to_member_of_reference_type : Error<
   "cannot form a pointer-to-member to member %0 of reference type %1">;
@@ -5243,6 +5516,14 @@ def err_typecheck_call_too_few_args_at_least_one : Error<
   "too few %select{|||execution configuration }0arguments to "
   "%select{function|block|method|kernel function}0 call, "
   "at least argument %1 must be specified">;
+def err_typecheck_call_too_few_args_suggest : Error<
+  "too few %select{|||execution configuration }0arguments to "
+  "%select{function|block|method|kernel function}0 call, "
+  "expected %1, have %2; did you mean %3?">;
+def err_typecheck_call_too_few_args_at_least_suggest : Error<
+  "too few %select{|||execution configuration }0arguments to "
+  "%select{function|block|method|kernel function}0 call, "
+  "expected at least %1, have %2; did you mean %3?">;
 def err_typecheck_call_too_many_args : Error<
   "too many %select{|||execution configuration }0arguments to "
   "%select{function|block|method|kernel function}0 call, "
@@ -5259,6 +5540,19 @@ def err_typecheck_call_too_many_args_at_most_one : Error<
   "too many %select{|||execution configuration }0arguments to "
   "%select{function|block|method|kernel function}0 call, "
   "expected at most single argument %1, have %2 arguments">;
+def err_typecheck_call_too_many_args_suggest : Error<
+  "too many %select{|||execution configuration }0arguments to "
+  "%select{function|block|method|kernel function}0 call, "
+  "expected %1, have %2; did you mean %3?">;
+def err_typecheck_call_too_many_args_at_most_suggest : Error<
+  "too many %select{|||execution configuration }0arguments to "
+  "%select{function|block|method|kernel function}0 call, "
+  "expected at most %1, have %2; did you mean %3?">;
+  
+def err_arc_typecheck_convert_incompatible_pointer : Error<
+  "incompatible pointer types passing retainable parameter of type %0"
+  "to a CF function expecting %1 type">;
+  
 def note_callee_decl : Note<
   "%0 declared here">;
 def note_defined_here : Note<"%0 defined here">;
@@ -5268,28 +5562,38 @@ def err_builtin_fn_use : Error<"builtin functions must be directly called">;
 def warn_call_wrong_number_of_arguments : Warning<
   "too %select{few|many}0 arguments in call to %1">;
 def err_atomic_builtin_must_be_pointer : Error<
-  "first argument to atomic builtin must be a pointer (%0 invalid)">;
+  "address argument to atomic builtin must be a pointer (%0 invalid)">;
 def err_atomic_builtin_must_be_pointer_intptr : Error<
-  "first argument to atomic builtin must be a pointer to integer or pointer"
+  "address argument to atomic builtin must be a pointer to integer or pointer"
   " (%0 invalid)">;
+def err_atomic_builtin_must_be_pointer_intfltptr : Error<
+  "address argument to atomic builtin must be a pointer to integer,"
+  " floating-point or pointer (%0 invalid)">;
 def err_atomic_builtin_pointer_size : Error<
-  "first argument to atomic builtin must be a pointer to 1,2,4,8 or 16 byte "
+  "address argument to atomic builtin must be a pointer to 1,2,4,8 or 16 byte "
   "type (%0 invalid)">;
+def err_atomic_exclusive_builtin_pointer_size : Error<
+  "address argument to load or store exclusive builtin must be a pointer to"
+  " 1,2,4 or 8 byte type (%0 invalid)">;
 def err_atomic_op_needs_atomic : Error<
-  "first argument to atomic operation must be a pointer to _Atomic "
+  "address argument to atomic operation must be a pointer to _Atomic "
   "type (%0 invalid)">;
 def err_atomic_op_needs_non_const_atomic : Error<
-  "first argument to atomic operation must be a pointer to non-const _Atomic "
+  "address argument to atomic operation must be a pointer to non-const _Atomic "
   "type (%0 invalid)">;
 def err_atomic_op_needs_trivial_copy : Error<
-  "first argument to atomic operation must be a pointer to a trivially-copyable"
-  " type (%0 invalid)">;
+  "address argument to atomic operation must be a pointer to a "
+  "trivially-copyable type (%0 invalid)">;
 def err_atomic_op_needs_atomic_int_or_ptr : Error<
-  "first argument to atomic operation must be a pointer to %select{|atomic }0"
+  "address argument to atomic operation must be a pointer to %select{|atomic }0"
   "integer or pointer (%1 invalid)">;
 def err_atomic_op_bitwise_needs_atomic_int : Error<
-  "first argument to bitwise atomic operation must be a pointer to "
+  "address argument to bitwise atomic operation must be a pointer to "
   "%select{|atomic }0integer (%1 invalid)">;
+  
+def err_atomic_load_store_uses_lib : Error<
+  "atomic %select{load|store}0 requires runtime support that is not "
+  "available for this target">;
 
 def err_deleted_function_use : Error<"attempt to use a deleted function">;
 
@@ -5326,6 +5630,13 @@ def warn_cxx98_compat_pass_non_pod_arg_to_vararg : Warning<
   "passing object of trivial but non-POD type %0 through variadic"
   " %select{function|block|method|constructor}1 is incompatible with C++98">,
   InGroup<CXX98Compat>, DefaultIgnore;
+def err_cannot_pass_to_vararg : Error<
+  "cannot pass %select{expression of type %1|initializer list}0 to variadic "
+  "%select{function|block|method|constructor}2">;
+def err_cannot_pass_to_vararg_format : Error<
+  "cannot pass %select{expression of type %1|initializer list}0 to variadic "
+  "%select{function|block|method|constructor}2; expected type from format "
+  "string was %3">;
 
 def err_typecheck_call_invalid_ordered_compare : Error<
   "ordered compare requires two args of floating point type"
@@ -5345,7 +5656,7 @@ def ext_typecheck_cast_nonscalar : Extension<
   "C99 forbids casting nonscalar type %0 to the same type">;
 def ext_typecheck_cast_to_union : Extension<
   "cast to union type is a GNU extension">,
-  InGroup<GNU>;
+  InGroup<GNUUnionCast>;
 def err_typecheck_cast_to_union_no_type : Error<
   "cast to union type from type %0 not present in union">;
 def err_cast_pointer_from_non_pointer_int : Error<
@@ -5415,6 +5726,16 @@ def err_expected_ident_or_lparen : Error<"expected identifier or '('">;
 
 def err_typecheck_cond_incompatible_operands_null : Error<
   "non-pointer operand type %0 incompatible with %select{NULL|nullptr}1">;
+def ext_empty_struct_union : Extension<
+  "empty %select{struct|union}0 is a GNU extension">, InGroup<GNUEmptyStruct>;
+def ext_no_named_members_in_struct_union : Extension<
+  "%select{struct|union}0 without named members is a GNU extension">, InGroup<GNUEmptyStruct>;
+def warn_zero_size_struct_union_compat : Warning<"%select{|empty }0"
+  "%select{struct|union}1 has size 0 in C, %select{size 1|non-zero size}2 in C++">,
+  InGroup<CXXCompat>, DefaultIgnore;
+def warn_zero_size_struct_union_in_extern_c : Warning<"%select{|empty }0"
+  "%select{struct|union}1 has size 0 in C, %select{size 1|non-zero size}2 in C++">,
+  InGroup<ExternCCompat>;
 } // End of general sema category.
 
 // inline asm.
@@ -5447,8 +5768,8 @@ let CategoryName = "Inline Assembly Issue" in {
     "accepted due to -fheinous-gnu-extensions, but clang may remove support "
     "for this in the future">;
   def warn_asm_mismatched_size_modifier : Warning<
-    "the value is truncated when put into register, "
-    "use a modifier to specify the size">,
+    "value size does not match register size specified by the constraint "
+    "and modifier">,
     InGroup<ASMOperandWidths>;
 }
 
@@ -5483,6 +5804,10 @@ def warn_initializer_out_of_order : Warning<
   "%select{field|base class}0 %1 will be initialized after "
   "%select{field|base}2 %3">,
   InGroup<Reorder>, DefaultIgnore;
+def warn_abstract_vbase_init_ignored : Warning<
+  "initializer for virtual base class %0 of abstract class %1 "
+  "will never be used">,
+  InGroup<DiagGroup<"abstract-vbase-init">>, DefaultIgnore;
 
 def err_base_init_does_not_name_class : Error<
   "constructor initializer %0 does not name a class">;
@@ -5516,7 +5841,7 @@ def err_in_class_initializer_references_def_ctor : Error<
 
 def ext_in_class_initializer_non_constant : Extension<
   "in-class initializer for static data member is not a constant expression; "
-  "folding it to a constant is a GNU extension">, InGroup<GNU>;
+  "folding it to a constant is a GNU extension">, InGroup<GNUFoldingConstant>;
 
 def err_thread_dynamic_init : Error<
   "initializer for thread-local variable must be a constant expression">;
@@ -5529,7 +5854,7 @@ def note_use_thread_local : Note<
 def ext_anonymous_union : Extension<
   "anonymous unions are a C11 extension">, InGroup<C11>;
 def ext_gnu_anonymous_struct : Extension<
-  "anonymous structs are a GNU extension">, InGroup<GNU>;
+  "anonymous structs are a GNU extension">, InGroup<GNUAnonymousStruct>;
 def ext_c11_anonymous_struct : Extension<
   "anonymous structs are a C11 extension">, InGroup<C11>;
 def err_anonymous_union_not_static : Error<
@@ -5584,6 +5909,8 @@ def err_base_must_be_class : Error<"base specifier must name a class">;
 def err_union_as_base_class : Error<"unions cannot be base classes">;
 def err_circular_inheritance : Error<
   "circular inheritance between %0 and %1">;
+def err_base_class_has_flexible_array_member : Error<
+  "base class %0 has a flexible array member">;
 def err_incomplete_base_class : Error<"base class has incomplete type">;
 def err_duplicate_base_class : Error<
   "base class %0 specified more than once as a direct base class">;
@@ -5636,6 +5963,9 @@ def err_operator_new_delete_declared_in_namespace : Error<
   "%0 cannot be declared inside a namespace">;
 def err_operator_new_delete_declared_static : Error<
   "%0 cannot be declared static in global scope">;
+def ext_operator_new_delete_declared_inline : ExtWarn<
+  "replacement function %0 cannot be declared 'inline'">,
+  InGroup<DiagGroup<"inline-new-delete">>;
 def err_operator_new_delete_invalid_result_type : Error<
   "%0 must return type %1">;
 def err_operator_new_delete_dependent_result_type : Error<
@@ -5667,9 +5997,12 @@ def err_literal_operator_params : Error<
   "parameter declaration for literal operator %0 is not valid">;
 def err_literal_operator_extern_c : Error<
   "literal operator must have C++ linkage">;
+def ext_string_literal_operator_template : ExtWarn<
+  "string literal operator templates are a GNU extension">,
+  InGroup<GNUStringLiteralOperatorTemplate>;
 def warn_user_literal_reserved : Warning<
-  "user-defined literal suffixes not starting with '_' are reserved; "
-  "no literal will invoke this operator">,
+  "user-defined literal suffixes not starting with '_' are reserved"
+  "%select{; no literal will invoke this operator|}0">,
   InGroup<UserDefinedLiterals>;
 
 // C++ conversion functions
@@ -5718,7 +6051,7 @@ def err_defaulted_special_member_return_type : Error<
   "return %1">;
 def err_defaulted_special_member_quals : Error<
   "an explicitly-defaulted %select{copy|move}0 assignment operator may not "
-  "have 'const', 'constexpr' or 'volatile' qualifiers">;
+  "have 'const'%select{, 'constexpr'|}1 or 'volatile' qualifiers">;
 def err_defaulted_special_member_volatile_param : Error<
   "the parameter for an explicitly-defaulted %select{<<ERROR>>|"
   "copy constructor|move constructor|copy assignment operator|"
@@ -5740,11 +6073,19 @@ def err_incorrect_defaulted_exception_spec : Error<
   "calculated one">;
 def err_incorrect_defaulted_constexpr : Error<
   "defaulted definition of %select{default constructor|copy constructor|"
-  "move constructor}0 is not constexpr">;
+  "move constructor|copy assignment operator|move assignment operator}0 "
+  "is not constexpr">;
 def err_out_of_line_default_deletes : Error<
   "defaulting this %select{default constructor|copy constructor|move "
   "constructor|copy assignment operator|move assignment operator|destructor}0 "
   "would delete it after its first declaration">;
+def warn_vbase_moved_multiple_times : Warning<
+  "defaulted move assignment operator of %0 will move assign virtual base "
+  "class %1 multiple times">, InGroup<DiagGroup<"multiple-move-vbase">>;
+def note_vbase_moved_here : Note<
+  "%select{%1 is a virtual base class of base class %2 declared here|"
+  "virtual base class %1 declared here}0">;
+
 def ext_implicit_exception_spec_mismatch : ExtWarn<
   "function previously declared with an %select{explicit|implicit}0 exception "
   "specification redeclared with an %select{implicit|explicit}0 exception "
@@ -5876,10 +6217,12 @@ def warn_init_ptr_member_to_parameter_addr : Warning<
   "initializing pointer member %0 with the stack address of parameter %1">,
   InGroup<DanglingField>;
 def warn_bind_ref_member_to_temporary : Warning<
-  "binding reference member %0 to a temporary value">,
+  "binding reference %select{|subobject of }1member %0 to a temporary value">,
   InGroup<DanglingField>;
 def note_ref_or_ptr_member_declared_here : Note<
   "%select{reference|pointer}0 member declared here">;
+def note_ref_subobject_of_member_declared_here : Note<
+  "member with reference subobject declared here">;
 
 // For non-floating point, expressions of the form x == x or x != x
 // should result in a warning, since these always evaluate to a constant.
@@ -6023,7 +6366,7 @@ def warn_unreachable_default : Warning<
   InGroup<CoveredSwitchDefault>, DefaultIgnore;
 def warn_not_in_enum : Warning<"case value not in enumerated type %0">,
   InGroup<Switch>;
-def warn_not_in_enum_assignement : Warning<"integer constant not in range "
+def warn_not_in_enum_assignment : Warning<"integer constant not in range "
   "of enumerated type %0">, InGroup<DiagGroup<"assign-enum">>, DefaultIgnore;
 def err_typecheck_statement_requires_scalar : Error<
   "statement requires expression of scalar type (%0 invalid)">;
@@ -6057,7 +6400,9 @@ def note_empty_body_on_separate_line : Note<
 def err_va_start_used_in_non_variadic_function : Error<
   "'va_start' used in function with fixed args">;
 def warn_second_parameter_of_va_start_not_last_named_argument : Warning<
-  "second parameter of 'va_start' not last named argument">;
+  "second parameter of 'va_start' not last named argument">, InGroup<Varargs>;
+def warn_va_start_of_reference_type_is_undefined : Warning<
+  "'va_start' has undefined behavior with reference types">, InGroup<Varargs>;
 def err_first_argument_to_va_arg_not_of_type_va_list : Error<
   "first argument to 'va_arg' is of type %0 and not 'va_list'">;
 def err_second_parameter_to_va_arg_incomplete: Error<
@@ -6072,7 +6417,7 @@ def warn_second_parameter_to_va_arg_ownership_qualified : Warning<
   InGroup<NonPODVarargs>, DefaultError;
 def warn_second_parameter_to_va_arg_never_compatible : Warning<
   "second argument to 'va_arg' is of promotable type %0; this va_arg has "
-  "undefined behavior because arguments will be promoted to %1">;
+  "undefined behavior because arguments will be promoted to %1">, InGroup<Varargs>;
 
 def warn_return_missing_expr : Warning<
   "non-void %select{function|method}1 %0 should return a value">, DefaultError,
@@ -6124,6 +6469,13 @@ def err_shufflevector_argument_too_large : Error<
   "index for __builtin_shufflevector must be less than the total number "
   "of vector elements">;
 
+def err_convertvector_non_vector : Error<
+  "first argument to __builtin_convertvector must be a vector">;
+def err_convertvector_non_vector_type : Error<
+  "second argument to __builtin_convertvector must be a vector type">;
+def err_convertvector_incompatible_vector : Error<
+  "first two arguments to __builtin_convertvector must have the same number of elements">;
+
 def err_vector_incorrect_num_initializers : Error<
   "%select{too many|too few}0 elements in vector initialization (expected %1 elements, have %2)">;
 def err_altivec_empty_initializer : Error<"expected initializer">;
@@ -6153,6 +6505,8 @@ def err_selector_element_not_lvalue : Error<
   "selector element is not a valid lvalue">;
 def err_selector_element_type : Error<
   "selector element type %0 is not a valid object">;
+def err_selector_element_const_type : Error<
+  "selector element of type %0 cannot be a constant l-value expression">;
 def err_collection_expr_type : Error<
   "the type %0 is not a pointer to a fast-enumerable object">;
 def warn_collection_expr_type : Warning<
@@ -6161,6 +6515,9 @@ def warn_collection_expr_type : Warning<
 def err_invalid_conversion_between_ext_vectors : Error<
   "invalid conversion between ext-vector type %0 and %1">;
 
+def warn_duplicate_attribute_exact : Warning<
+  "attribute %0 is already applied">, InGroup<IgnoredAttributes>;
+
 def warn_duplicate_attribute : Warning<
   "attribute %0 is already applied with different parameters">,
   InGroup<IgnoredAttributes>;
@@ -6231,19 +6588,19 @@ def warn_direct_ivar_access : Warning<"instance variable %0 is being "
 
 // Spell-checking diagnostics
 def err_unknown_type_or_class_name_suggest : Error<
-  "unknown %select{type|class}2 name %0; did you mean %1?">;
+  "unknown %select{type|class}1 name %0; did you mean %2?">;
 def err_unknown_typename_suggest : Error<
   "unknown type name %0; did you mean %1?">;
 def err_unknown_nested_typename_suggest : Error<
-  "no type named %0 in %1; did you mean %2?">;
-def err_no_member_suggest : Error<"no member named %0 in %1; did you mean %2?">;
+  "no type named %0 in %1; did you mean %select{|simply }2%3?">;
+def err_no_member_suggest : Error<"no member named %0 in %1; did you mean %select{|simply }2%3?">;
 def err_undeclared_use_suggest : Error<
   "use of undeclared %0; did you mean %1?">;
 def err_undeclared_var_use_suggest : Error<
   "use of undeclared identifier %0; did you mean %1?">;
 def err_no_template_suggest : Error<"no template named %0; did you mean %1?">;
 def err_no_member_template_suggest : Error<
-  "no template named %0 in %1; did you mean %2?">;
+  "no template named %0 in %1; did you mean %select{|simply }2%3?">;
 def err_mem_init_not_member_or_class_suggest : Error<
   "initializer %0 does not name a non-static data member or base "
   "class; did you mean the %select{base class|member}1 %2?">;
@@ -6273,7 +6630,7 @@ def note_base_class_specified_here : Note<
 def err_using_directive_suggest : Error<
   "no namespace named %0; did you mean %1?">;
 def err_using_directive_member_suggest : Error<
-  "no namespace named %0 in %1; did you mean %2?">;
+  "no namespace named %0 in %1; did you mean %select{|simply }2%3?">;
 def note_namespace_defined_here : Note<"namespace %0 defined here">;
 def err_sizeof_pack_no_pack_name_suggest : Error<
   "%0 does not refer to the name of a parameter pack; did you mean %1?">;
@@ -6308,16 +6665,22 @@ def err_invalid_astype_of_different_size : Error<
   "invalid reinterpretation: sizes of %0 and %1 must match">;
 def err_static_kernel : Error<
   "kernel functions cannot be declared static">;
-def err_opencl_ptrptr_kernel_arg : Error<
-  "kernel argument cannot be declared as a pointer to a pointer">;
+def err_opencl_ptrptr_kernel_param : Error<
+  "kernel parameter cannot be declared as a pointer to a pointer">;
 def err_static_function_scope : Error<
   "variables in function scope cannot be declared static">;
 def err_opencl_bitfields : Error<
   "bitfields are not supported in OpenCL">;
 def err_opencl_vla : Error<
   "variable length arrays are not supported in OpenCL">;
-def err_event_t_kernel_arg : Error<
-  "the event_t type cannot be used to declare a kernel function argument">;
+def err_bad_kernel_param_type : Error<
+  "%0 cannot be used as the type of a kernel parameter">;
+def err_record_with_pointers_kernel_param : Error<
+  "%select{struct|union}0 kernel parameters may not contain pointers">;
+def note_within_field_of_type : Note<
+  "within field of type %0 declared here">;
+def note_illegal_field_declared_here : Note<
+  "field of illegal %select{type|pointer type}0 %1 declared here">;
 def err_event_t_global_var : Error<
   "the event_t type cannot be used to declare a program scope variable">;
 def err_event_t_struct_field : Error<
@@ -6332,24 +6695,49 @@ def err_wrong_sampler_addressspace: Error<
   "sampler type cannot be used with the __local and __global address space qualifiers">;
 def err_opencl_global_invalid_addr_space : Error<
   "global variables must have a constant address space qualifier">;
-  
+def err_opencl_no_main : Error<"%select{function|kernel}0 cannot be called 'main'">;
+} // end of sema category
+
+let CategoryName = "OpenMP Issue" in {
 // OpenMP support.
+def err_omp_expected_var_arg : Error<
+  "%0 is not a global variable, static local variable or static data member">;
 def err_omp_expected_var_arg_suggest : Error<
-  "%0 is not a global variable, static local variable or static data member%select{|; did you mean %2?}1">;
+  "%0 is not a global variable, static local variable or static data member; "
+  "did you mean %1">;
 def err_omp_global_var_arg : Error<
   "arguments of '#pragma omp %0' must have %select{global storage|static storage duration}1">;
 def err_omp_ref_type_arg : Error<
   "arguments of '#pragma omp %0' cannot be of reference type %1">;
 def err_omp_var_scope : Error<
-  "'#pragma omp %0' must appear in the scope of the %1 variable declaration">;
+  "'#pragma omp %0' must appear in the scope of the %q1 variable declaration">;
 def err_omp_var_used : Error<
-  "'#pragma omp %0' must precede all references to variable %1">;
+  "'#pragma omp %0' must precede all references to variable %q1">;
 def err_omp_var_thread_local : Error<
   "variable %0 cannot be threadprivate because it is thread-local">;
-def err_omp_incomplete_type : Error<
-  "a threadprivate variable must not have incomplete type %0">;
-
-} // end of sema category
+def err_omp_private_incomplete_type : Error<
+  "a private variable with incomplete type %0">;
+def err_omp_firstprivate_incomplete_type : Error<
+  "a firstprivate variable with incomplete type %0">;
+def err_omp_unexpected_clause_value : Error <
+  "expected %0 in OpenMP clause '%1'">;
+def err_omp_expected_var_name : Error <
+  "expected variable name">;
+def err_omp_required_method : Error <
+  "%0 variable must have an accessible, unambiguous %select{default constructor|copy constructor|copy assignment operator|'%2'|destructor}1">;
+def err_omp_clause_ref_type_arg : Error<
+  "arguments of OpenMP clause '%0' cannot be of reference type %1">;
+def err_omp_threadprivate_incomplete_type : Error<
+  "threadprivate variable with incomplete type %0">;
+def err_omp_no_dsa_for_variable : Error <
+  "variable %0 must have explicitly specified data sharing attributes">;
+def err_omp_wrong_dsa : Error<
+  "%0 variable cannot be %1">;
+def note_omp_explicit_dsa : Note <
+  "defined as %0">;
+def note_omp_predetermined_dsa : Note <
+  "predetermined as %0">;
+} // end of OpenMP category
 
 let CategoryName = "Related Result Type Issue" in {
 // Objective-C related result type compatibility
@@ -6386,6 +6774,8 @@ def err_module_private_local : Error<
 def err_module_private_local_class : Error<
   "local %select{struct|interface|union|class|enum}0 cannot be declared "
   "__module_private__">;
+def err_module_private_declaration : Error<
+  "declaration of %0 must be imported from module '%1' before it is required">;
 def err_module_private_definition : Error<
   "definition of %0 must be imported from module '%1' before it is required">;
 }
diff --git a/include/clang/Basic/DiagnosticSerializationKinds.td b/include/clang/Basic/DiagnosticSerializationKinds.td
index 1b45b10c1221..81509cc18821 100644
--- a/include/clang/Basic/DiagnosticSerializationKinds.td
+++ b/include/clang/Basic/DiagnosticSerializationKinds.td
@@ -14,7 +14,7 @@ def err_fe_unable_to_read_pch_file : Error<
 def err_fe_not_a_pch_file : Error<
     "input is not a PCH file: '%0'">;
 def err_fe_pch_malformed : Error<
-    "malformed or corrupted PCH file: '%0'">, DefaultFatal;
+    "malformed or corrupted AST file: '%0'">, DefaultFatal;
 def err_fe_pch_malformed_block : Error<
     "malformed block record in PCH file: '%0'">, DefaultFatal;
 def err_fe_pch_file_modified : Error<
@@ -22,6 +22,8 @@ def err_fe_pch_file_modified : Error<
     DefaultFatal;
 def err_fe_pch_file_overridden : Error<
     "file '%0' from the precompiled header has been overridden">;
+def note_module_cache_path : Note<
+    "after modifying system headers, please delete the module cache at '%0'">;
 
 def err_pch_targetopt_mismatch : Error<
     "PCH file was compiled for the %0 '%1' but the current translation "
@@ -65,4 +67,13 @@ def err_pch_pp_detailed_record : Error<
 
 def err_not_a_pch_file : Error<
     "'%0' does not appear to be a precompiled header file">, DefaultFatal;
+
+def err_module_odr_violation_missing_decl : Error<
+  "%q0 from module '%1' is not present in definition of %q2"
+  "%select{ in module '%4'| provided earlier}3">, NoSFINAE;
+def note_module_odr_violation_no_possible_decls : Note<
+  "definition has no member %0">;
+def note_module_odr_violation_possible_decl : Note<
+  "declaration of %0 does not match">;
+
 }
diff --git a/include/clang/Basic/FileManager.h b/include/clang/Basic/FileManager.h
index 6d9e53b7eb0d..255eee3084b5 100644
--- a/include/clang/Basic/FileManager.h
+++ b/include/clang/Basic/FileManager.h
@@ -24,6 +24,7 @@
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/Allocator.h"
+#include "llvm/Support/FileSystem.h"
 // FIXME: Enhance libsystem to support inode and other fields in stat.
 #include <sys/types.h>
 
@@ -35,7 +36,6 @@ struct stat;
 
 namespace llvm {
 class MemoryBuffer;
-namespace sys { class Path; }
 }
 
 namespace clang {
@@ -63,9 +63,9 @@ class FileEntry {
   time_t ModTime;             // Modification time of file.
   const DirectoryEntry *Dir;  // Directory file lives in.
   unsigned UID;               // A unique (small) ID for the file.
-  dev_t Device;               // ID for the device containing the file.
-  ino_t Inode;                // Inode number for the file.
-  mode_t FileMode;            // The file mode as returned by 'stat'.
+  llvm::sys::fs::UniqueID UniqueID;
+  bool IsNamedPipe;
+  bool InPCH;
 
   /// FD - The file descriptor for the file entry if it is opened and owned
   /// by the FileEntry.  If not, this is set to -1.
@@ -73,10 +73,12 @@ class FileEntry {
   friend class FileManager;
 
 public:
-  FileEntry(dev_t device, ino_t inode, mode_t m)
-    : Name(0), Device(device), Inode(inode), FileMode(m), FD(-1) {}
+  FileEntry(llvm::sys::fs::UniqueID UniqueID, bool IsNamedPipe, bool InPCH)
+      : Name(0), UniqueID(UniqueID), IsNamedPipe(IsNamedPipe), InPCH(InPCH),
+        FD(-1) {}
   // Add a default constructor for use with llvm::StringMap
-  FileEntry() : Name(0), Device(0), Inode(0), FileMode(0), FD(-1) {}
+  FileEntry()
+      : Name(0), UniqueID(0, 0), IsNamedPipe(false), InPCH(false), FD(-1) {}
 
   FileEntry(const FileEntry &FE) {
     memcpy(this, &FE, sizeof(FE));
@@ -93,23 +95,22 @@ public:
   const char *getName() const { return Name; }
   off_t getSize() const { return Size; }
   unsigned getUID() const { return UID; }
-  ino_t getInode() const { return Inode; }
-  dev_t getDevice() const { return Device; }
+  const llvm::sys::fs::UniqueID &getUniqueID() const { return UniqueID; }
+  bool isInPCH() const { return InPCH; }
   time_t getModificationTime() const { return ModTime; }
-  mode_t getFileMode() const { return FileMode; }
 
   /// \brief Return the directory the file lives in.
   const DirectoryEntry *getDir() const { return Dir; }
 
-  bool operator<(const FileEntry &RHS) const {
-    return Device < RHS.Device || (Device == RHS.Device && Inode < RHS.Inode);
-  }
+  bool operator<(const FileEntry &RHS) const { return UniqueID < RHS.UniqueID; }
 
   /// \brief Check whether the file is a named pipe (and thus can't be opened by
   /// the native FileManager methods).
-  bool isNamedPipe() const;
+  bool isNamedPipe() const { return IsNamedPipe; }
 };
 
+struct FileData;
+
 /// \brief Implements support for file system lookup, file system caching,
 /// and directory search management.
 ///
@@ -170,8 +171,8 @@ class FileManager : public RefCountedBase<FileManager> {
   // Caching.
   OwningPtr<FileSystemStatCache> StatCache;
 
-  bool getStatValue(const char *Path, struct stat &StatBuf,
-                    bool isFile, int *FileDescriptor);
+  bool getStatValue(const char *Path, FileData &Data, bool isFile,
+                    int *FileDescriptor);
 
   /// Add all ancestors of the given path (pointing to either a file
   /// or a directory) as virtual directories.
@@ -244,7 +245,8 @@ public:
   ///
   /// If the path is relative, it will be resolved against the WorkingDir of the
   /// FileManager's FileSystemOptions.
-  bool getNoncachedStatValue(StringRef Path, struct stat &StatBuf);
+  bool getNoncachedStatValue(StringRef Path,
+                             llvm::sys::fs::file_status &Result);
 
   /// \brief Remove the real file \p Entry from the cache.
   void invalidateCache(const FileEntry *Entry);
diff --git a/include/clang/Basic/FileSystemStatCache.h b/include/clang/Basic/FileSystemStatCache.h
index ff70373ffb06..23d82569437f 100644
--- a/include/clang/Basic/FileSystemStatCache.h
+++ b/include/clang/Basic/FileSystemStatCache.h
@@ -18,11 +18,21 @@
 #include "clang/Basic/LLVM.h"
 #include "llvm/ADT/OwningPtr.h"
 #include "llvm/ADT/StringMap.h"
+#include "llvm/Support/FileSystem.h"
 #include <sys/stat.h>
 #include <sys/types.h>
 
 namespace clang {
 
+struct FileData {
+  uint64_t Size;
+  time_t ModTime;
+  llvm::sys::fs::UniqueID UniqueID;
+  bool IsDirectory;
+  bool IsNamedPipe;
+  bool InPCH;
+};
+
 /// \brief Abstract interface for introducing a FileManager cache for 'stat'
 /// system calls, which is used by precompiled and pretokenized headers to
 /// improve performance.
@@ -49,10 +59,9 @@ public:
   /// success for directories (not files).  On a successful file lookup, the
   /// implementation can optionally fill in FileDescriptor with a valid
   /// descriptor and the client guarantees that it will close it.
-  static bool get(const char *Path, struct stat &StatBuf,
-                  bool isFile, int *FileDescriptor, FileSystemStatCache *Cache);
-  
-  
+  static bool get(const char *Path, FileData &Data, bool isFile,
+                  int *FileDescriptor, FileSystemStatCache *Cache);
+
   /// \brief Sets the next stat call cache in the chain of stat caches.
   /// Takes ownership of the given stat cache.
   void setNextStatCache(FileSystemStatCache *Cache) {
@@ -68,18 +77,18 @@ public:
   FileSystemStatCache *takeNextStatCache() { return NextStatCache.take(); }
   
 protected:
-  virtual LookupResult getStat(const char *Path, struct stat &StatBuf,
-                               bool isFile, int *FileDescriptor) = 0;
+  virtual LookupResult getStat(const char *Path, FileData &Data, bool isFile,
+                               int *FileDescriptor) = 0;
 
-  LookupResult statChained(const char *Path, struct stat &StatBuf,
-                           bool isFile, int *FileDescriptor) {
+  LookupResult statChained(const char *Path, FileData &Data, bool isFile,
+                           int *FileDescriptor) {
     if (FileSystemStatCache *Next = getNextStatCache())
-      return Next->getStat(Path, StatBuf, isFile, FileDescriptor);
-    
+      return Next->getStat(Path, Data, isFile, FileDescriptor);
+
     // If we hit the end of the list of stat caches to try, just compute and
     // return it without a cache.
-    return get(Path, StatBuf,
-               isFile, FileDescriptor, 0) ? CacheMissing : CacheExists;
+    return get(Path, Data, isFile, FileDescriptor, 0) ? CacheMissing
+                                                      : CacheExists;
   }
 };
 
@@ -89,16 +98,16 @@ protected:
 class MemorizeStatCalls : public FileSystemStatCache {
 public:
   /// \brief The set of stat() calls that have been seen.
-  llvm::StringMap<struct stat, llvm::BumpPtrAllocator> StatCalls;
-  
-  typedef llvm::StringMap<struct stat, llvm::BumpPtrAllocator>::const_iterator
+  llvm::StringMap<FileData, llvm::BumpPtrAllocator> StatCalls;
+
+  typedef llvm::StringMap<FileData, llvm::BumpPtrAllocator>::const_iterator
   iterator;
-  
+
   iterator begin() const { return StatCalls.begin(); }
   iterator end() const { return StatCalls.end(); }
-  
-  virtual LookupResult getStat(const char *Path, struct stat &StatBuf,
-                               bool isFile, int *FileDescriptor);
+
+  virtual LookupResult getStat(const char *Path, FileData &Data, bool isFile,
+                               int *FileDescriptor);
 };
 
 } // end namespace clang
diff --git a/include/clang/Basic/IdentifierTable.h b/include/clang/Basic/IdentifierTable.h
index d4d53390bdb3..304ff364bfc9 100644
--- a/include/clang/Basic/IdentifierTable.h
+++ b/include/clang/Basic/IdentifierTable.h
@@ -19,6 +19,7 @@
 #include "clang/Basic/LLVM.h"
 #include "clang/Basic/OperatorKinds.h"
 #include "clang/Basic/TokenKinds.h"
+#include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/PointerLikeTypeTraits.h"
@@ -147,7 +148,7 @@ public:
     return HadMacro;
   }
 
-  /// getTokenID - If this is a source-language token (e.g. 'for'), this API
+  /// If this is a source-language token (e.g. 'for'), this API
   /// can be used to cause the lexer to map identifiers to source-language
   /// tokens.
   tok::TokenKind getTokenID() const { return (tok::TokenKind)TokenID; }
@@ -183,8 +184,9 @@ public:
   }
   void setObjCKeywordID(tok::ObjCKeywordKind ID) { ObjCOrBuiltinID = ID; }
 
-  /// getBuiltinID - Return a value indicating whether this is a builtin
-  /// function.  0 is not-built-in.  1 is builtin-for-some-nonprimary-target.
+  /// \brief Return a value indicating whether this is a builtin function.
+  ///
+  /// 0 is not-built-in.  1 is builtin-for-some-nonprimary-target.
   /// 2+ are specific builtin functions.
   unsigned getBuiltinID() const {
     if (ObjCOrBuiltinID >= tok::NUM_OBJC_KEYWORDS)
@@ -236,7 +238,7 @@ public:
       RecomputeNeedsHandleIdentifier();
   }
 
-  /// isPoisoned - Return true if this token has been poisoned.
+  /// \brief Return true if this token has been poisoned.
   bool isPoisoned() const { return IsPoisoned; }
 
   /// isCPlusPlusOperatorKeyword/setIsCPlusPlusOperatorKeyword controls whether
@@ -256,12 +258,14 @@ public:
   T *getFETokenInfo() const { return static_cast<T*>(FETokenInfo); }
   void setFETokenInfo(void *T) { FETokenInfo = T; }
 
-  /// isHandleIdentifierCase - Return true if the Preprocessor::HandleIdentifier
-  /// must be called on a token of this identifier.  If this returns false, we
-  /// know that HandleIdentifier will not affect the token.
+  /// \brief Return true if the Preprocessor::HandleIdentifier must be called
+  /// on a token of this identifier.
+  ///
+  /// If this returns false, we know that HandleIdentifier will not affect
+  /// the token.
   bool isHandleIdentifierCase() const { return NeedsHandleIdentifier; }
 
-  /// isFromAST - Return true if the identifier in its current state was loaded
+  /// \brief Return true if the identifier in its current state was loaded
   /// from an AST file.
   bool isFromAST() const { return IsFromAST; }
 
@@ -293,12 +297,10 @@ public:
       RecomputeNeedsHandleIdentifier();
   }
   
-  /// \brief Determine whether this is the contextual keyword
-  /// 'import'.
+  /// \brief Determine whether this is the contextual keyword \c import.
   bool isModulesImport() const { return IsModulesImport; }
   
-  /// \brief Set whether this identifier is the contextual keyword 
-  /// 'import'.
+  /// \brief Set whether this identifier is the contextual keyword \c import.
   void setModulesImport(bool I) {
     IsModulesImport = I;
     if (I)
@@ -308,10 +310,9 @@ public:
   }
   
 private:
-  /// RecomputeNeedsHandleIdentifier - The Preprocessor::HandleIdentifier does
-  /// several special (but rare) things to identifiers of various sorts.  For
-  /// example, it changes the "for" keyword token from tok::identifier to
-  /// tok::for.
+  /// The Preprocessor::HandleIdentifier does several special (but rare)
+  /// things to identifiers of various sorts.  For example, it changes the
+  /// \c for keyword token from tok::identifier to tok::for.
   ///
   /// This method is very tied to the definition of HandleIdentifier.  Any
   /// change to it should be reflected here.
@@ -323,9 +324,10 @@ private:
   }
 };
 
-/// \brief an RAII object for [un]poisoning an identifier
-/// within a certain scope. II is allowed to be null, in
-/// which case, objects of this type have no effect.
+/// \brief An RAII object for [un]poisoning an identifier within a scope.
+///
+/// \p II is allowed to be null, in which case objects of this type have
+/// no effect.
 class PoisonIdentifierRAIIObject {
   IdentifierInfo *const II;
   const bool OldValue;
@@ -371,17 +373,16 @@ public:
   virtual StringRef Next() = 0;
 };
 
-/// IdentifierInfoLookup - An abstract class used by IdentifierTable that
-///  provides an interface for performing lookups from strings
-/// (const char *) to IdentiferInfo objects.
+/// \brief Provides lookups to, and iteration over, IdentiferInfo objects.
 class IdentifierInfoLookup {
 public:
   virtual ~IdentifierInfoLookup();
 
-  /// get - Return the identifier token info for the specified named identifier.
-  ///  Unlike the version in IdentifierTable, this returns a pointer instead
-  ///  of a reference.  If the pointer is NULL then the IdentifierInfo cannot
-  ///  be found.
+  /// \brief Return the IdentifierInfo for the specified named identifier.
+  ///
+  /// Unlike the version in IdentifierTable, this returns a pointer instead
+  /// of a reference.  If the pointer is null then the IdentifierInfo cannot
+  /// be found.
   virtual IdentifierInfo* get(StringRef Name) = 0;
 
   /// \brief Retrieve an iterator into the set of all identifiers
@@ -577,6 +578,19 @@ enum { ObjCMethodFamilyBitWidth = 4 };
 /// \brief An invalid value of ObjCMethodFamily.
 enum { InvalidObjCMethodFamily = (1 << ObjCMethodFamilyBitWidth) - 1 };
 
+/// \brief A family of Objective-C methods.
+///
+/// These are family of methods whose result type is initially 'id', but
+/// but are candidate for the result type to be changed to 'instancetype'.
+enum ObjCInstanceTypeFamily {
+  OIT_None,
+  OIT_Array,
+  OIT_Dictionary,
+  OIT_Singleton,
+  OIT_Init,
+  OIT_ReturnsSelf
+};
+
 /// \brief Smart pointer class that efficiently represents Objective-C method
 /// names.
 ///
@@ -697,6 +711,8 @@ public:
   static Selector getTombstoneMarker() {
     return Selector(uintptr_t(-2));
   }
+  
+  static ObjCInstanceTypeFamily getInstTypeMethodFamily(Selector sel);
 };
 
 /// \brief This table allows us to fully hide how we implement
@@ -725,13 +741,19 @@ public:
   /// \brief Return the total amount of memory allocated for managing selectors.
   size_t getTotalMemory() const;
 
-  /// \brief Return the setter name for the given identifier.
+  /// \brief Return the default setter name for the given identifier.
+  ///
+  /// This is "set" + \p Name where the initial character of \p Name
+  /// has been capitalized.
+  static SmallString<64> constructSetterName(StringRef Name);
+
+  /// \brief Return the default setter selector for the given identifier.
   ///
   /// This is "set" + \p Name where the initial character of \p Name
   /// has been capitalized.
-  static Selector constructSetterName(IdentifierTable &Idents,
-                                      SelectorTable &SelTable,
-                                      const IdentifierInfo *Name);
+  static Selector constructSetterSelector(IdentifierTable &Idents,
+                                          SelectorTable &SelTable,
+                                          const IdentifierInfo *Name);
 };
 
 /// DeclarationNameExtra - Common base of the MultiKeywordSelector,
diff --git a/include/clang/Basic/Lambda.h b/include/clang/Basic/Lambda.h
index b1ad6acda3b4..280ae94fedc5 100644
--- a/include/clang/Basic/Lambda.h
+++ b/include/clang/Basic/Lambda.h
@@ -8,7 +8,7 @@
 //===----------------------------------------------------------------------===//
 ///
 /// \file
-/// \brief  Defines several types used to describe C++ lambda expressions
+/// \brief Defines several types used to describe C++ lambda expressions
 /// that are shared between the parser and AST.
 ///
 //===----------------------------------------------------------------------===//
@@ -26,12 +26,15 @@ enum LambdaCaptureDefault {
   LCD_ByRef
 };
 
-/// \brief The different capture forms in a lambda introducer: 'this' or a
-/// copied or referenced variable.
+/// \brief The different capture forms in a lambda introducer
+///
+/// C++11 allows capture of \c this, or of local variables by copy or
+/// by reference.  C++1y also allows "init-capture", where the initializer
+/// is an expression.
 enum LambdaCaptureKind {
-  LCK_This,
-  LCK_ByCopy,
-  LCK_ByRef
+  LCK_This,   ///< Capturing the \c this pointer
+  LCK_ByCopy, ///< Capturing by copy (a.k.a., by value)
+  LCK_ByRef   ///< Capturing by reference
 };
 
 } // end namespace clang
diff --git a/include/clang/Basic/LangOptions.def b/include/clang/Basic/LangOptions.def
index b17dfbc9b520..5a1025cba7ec 100644
--- a/include/clang/Basic/LangOptions.def
+++ b/include/clang/Basic/LangOptions.def
@@ -1,4 +1,4 @@
-//===--- LangOptions.def - Language option database --------------- C++ -*-===//
+//===--- LangOptions.def - Language option database -------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -8,7 +8,7 @@
 //===----------------------------------------------------------------------===//
 //
 // This file defines the language options. Users of this file must
-// define the LANGOPT macro to make use of this information. 
+// define the LANGOPT macro to make use of this information.
 // Optionally, the user may also define BENIGN_LANGOPT
 // (for options that don't affect the construction of the AST in an
 // incompatible way), ENUM_LANGOPT (for options that have enumeration,
@@ -52,11 +52,11 @@ LANGOPT(CPlusPlus11       , 1, 0, "C++0x")
 LANGOPT(CPlusPlus1y       , 1, 0, "C++1y")
 LANGOPT(ObjC1             , 1, 0, "Objective-C 1")
 LANGOPT(ObjC2             , 1, 0, "Objective-C 2")
-BENIGN_LANGOPT(ObjCDefaultSynthProperties , 1, 0, 
+BENIGN_LANGOPT(ObjCDefaultSynthProperties , 1, 0,
                "Objective-C auto-synthesized properties")
-BENIGN_LANGOPT(EncodeExtendedBlockSig , 1, 0, 
+BENIGN_LANGOPT(EncodeExtendedBlockSig , 1, 0,
                "Encoding extended block type signature")
-BENIGN_LANGOPT(ObjCInferRelatedResultType , 1, 1, 
+BENIGN_LANGOPT(ObjCInferRelatedResultType , 1, 1,
                "Objective-C related result type inference")
 LANGOPT(Trigraphs         , 1, 0,"trigraphs")
 LANGOPT(LineComment       , 1, 0, "'//' comments")
@@ -85,6 +85,7 @@ LANGOPT(RTTI              , 1, 1, "run-time type information")
 LANGOPT(MSBitfields       , 1, 0, "Microsoft-compatible structure layout")
 LANGOPT(Freestanding, 1, 0, "freestanding implementation")
 LANGOPT(NoBuiltin         , 1, 0, "disable builtin functions")
+LANGOPT(NoMathBuiltin     , 1, 0, "disable math builtin functions")
 
 BENIGN_LANGOPT(ThreadsafeStatics , 1, 1, "thread-safe static initializers")
 LANGOPT(POSIXThreads      , 1, 0, "POSIX thread support")
@@ -93,10 +94,11 @@ BENIGN_LANGOPT(EmitAllDecls      , 1, 0, "support for emitting all declarations"
 LANGOPT(MathErrno         , 1, 1, "errno support for math functions")
 BENIGN_LANGOPT(HeinousExtensions , 1, 0, "Extensions that we really don't like and may be ripped out at any time")
 LANGOPT(Modules           , 1, 0, "modules extension to C")
+LANGOPT(ModulesDeclUse    , 1, 0, "require declaration of module uses")
 LANGOPT(Optimize          , 1, 0, "__OPTIMIZE__ predefined macro")
 LANGOPT(OptimizeSize      , 1, 0, "__OPTIMIZE_SIZE__ predefined macro")
 LANGOPT(Static            , 1, 0, "__STATIC__ predefined macro (as opposed to __DYNAMIC__)")
-VALUE_LANGOPT(PackStruct  , 32, 0, 
+VALUE_LANGOPT(PackStruct  , 32, 0,
               "default struct packing maximum alignment")
 VALUE_LANGOPT(PICLevel    , 2, 0, "__PIC__ level")
 VALUE_LANGOPT(PIELevel    , 2, 0, "__PIE__ level")
@@ -121,6 +123,7 @@ LANGOPT(CUDA              , 1, 0, "CUDA")
 LANGOPT(OpenMP            , 1, 0, "OpenMP support")
 
 LANGOPT(AssumeSaneOperatorNew , 1, 1, "implicit __attribute__((malloc)) for C++'s new operators")
+LANGOPT(SizedDeallocation , 1, 0, "enable sized deallocation functions")
 BENIGN_LANGOPT(ElideConstructors , 1, 1, "C++ copy constructor elision")
 BENIGN_LANGOPT(DumpRecordLayouts , 1, 0, "dumping the layout of IRgen'd records")
 BENIGN_LANGOPT(DumpRecordLayoutsSimple , 1, 0, "dumping the layout of IRgen'd records in a simple form")
@@ -140,31 +143,37 @@ LANGOPT(NoBitFieldTypeAlign , 1, 0, "bit-field type alignment")
 LANGOPT(HexagonQdsp6Compat , 1, 0, "hexagon-qdsp6 backward compatibility")
 LANGOPT(ObjCAutoRefCount , 1, 0, "Objective-C automated reference counting")
 LANGOPT(ObjCARCWeak         , 1, 0, "__weak support in the ARC runtime")
+LANGOPT(ObjCSubscriptingLegacyRuntime         , 1, 0, "Subscripting support in legacy ObjectiveC runtime")
 LANGOPT(FakeAddressSpaceMap , 1, 0, "OpenCL fake address space map")
+ENUM_LANGOPT(AddressSpaceMapMangling , AddrSpaceMapMangling, 2, ASMM_Target, "OpenCL address space map mangling mode")
 
 LANGOPT(MRTD , 1, 0, "-mrtd calling convention")
 BENIGN_LANGOPT(DelayedTemplateParsing , 1, 0, "delayed template parsing")
 LANGOPT(BlocksRuntimeOptional , 1, 0, "optional blocks runtime")
 
 ENUM_LANGOPT(GC, GCMode, 2, NonGC, "Objective-C Garbage Collection mode")
-ENUM_LANGOPT(ValueVisibilityMode, Visibility, 3, DefaultVisibility, 
+ENUM_LANGOPT(ValueVisibilityMode, Visibility, 3, DefaultVisibility,
              "value symbol visibility")
-ENUM_LANGOPT(TypeVisibilityMode, Visibility, 3, DefaultVisibility, 
+ENUM_LANGOPT(TypeVisibilityMode, Visibility, 3, DefaultVisibility,
              "type symbol visibility")
-ENUM_LANGOPT(StackProtector, StackProtectorMode, 2, SSPOff, 
+ENUM_LANGOPT(StackProtector, StackProtectorMode, 2, SSPOff,
              "stack protector mode")
 ENUM_LANGOPT(SignedOverflowBehavior, SignedOverflowBehaviorTy, 2, SOB_Undefined,
              "signed integer overflow handling")
 
-BENIGN_LANGOPT(InstantiationDepth, 32, 256, 
+BENIGN_LANGOPT(ArrowDepth, 32, 256,
+               "maximum number of operator->s to follow")
+BENIGN_LANGOPT(InstantiationDepth, 32, 256,
                "maximum template instantiation depth")
 BENIGN_LANGOPT(ConstexprCallDepth, 32, 512,
                "maximum constexpr call depth")
+BENIGN_LANGOPT(ConstexprStepLimit, 32, 1048576,
+               "maximum constexpr evaluation steps")
 BENIGN_LANGOPT(BracketDepth, 32, 256,
                "maximum bracket nesting depth")
-BENIGN_LANGOPT(NumLargeByValueCopy, 32, 0, 
+BENIGN_LANGOPT(NumLargeByValueCopy, 32, 0,
         "if non-zero, warn about parameter or return Warn if parameter/return value is larger in bytes than this setting. 0 is no check.")
-VALUE_LANGOPT(MSCVersion, 32, 0, 
+VALUE_LANGOPT(MSCVersion, 32, 0,
               "version of Microsoft Visual C/C++")
 
 LANGOPT(ApplePragmaPack, 1, 0, "Apple gcc-compatible #pragma pack handling")
diff --git a/include/clang/Basic/LangOptions.h b/include/clang/Basic/LangOptions.h
index 21ca7eb201c9..d4e8b4eb5bad 100644
--- a/include/clang/Basic/LangOptions.h
+++ b/include/clang/Basic/LangOptions.h
@@ -66,6 +66,8 @@ public:
     SOB_Trapping    // -ftrapv
   };
 
+  enum AddrSpaceMapMangling { ASMM_Target, ASMM_On, ASMM_Off };
+
 public:
   clang::ObjCRuntime ObjCRuntime;
 
@@ -95,6 +97,11 @@ public:
   bool isSignedOverflowDefined() const {
     return getSignedOverflowBehavior() == SOB_Defined;
   }
+  
+  bool isSubscriptPointerArithmetic() const {
+    return ObjCRuntime.isSubscriptPointerArithmetic() &&
+           !ObjCSubscriptingLegacyRuntime;
+  }
 
   /// \brief Reset all of the options that are not considered when building a
   /// module.
diff --git a/include/clang/Basic/Linkage.h b/include/clang/Basic/Linkage.h
index 01b8db15f511..699620784ecd 100644
--- a/include/clang/Basic/Linkage.h
+++ b/include/clang/Basic/Linkage.h
@@ -37,6 +37,10 @@ enum Linkage {
   /// point of view.
   UniqueExternalLinkage,
 
+  /// \brief No linkage according to the standard, but is visible from other
+  /// translation units because of types defined in a inline function.
+  VisibleNoLinkage,
+
   /// \brief External linkage, which indicates that the entity can
   /// be referred to from other translation units.
   ExternalLinkage
@@ -62,14 +66,40 @@ enum GVALinkage {
   GVA_ExplicitTemplateInstantiation
 };
 
-/// \brief Determine whether the given linkage is semantically external.
-inline bool isExternalLinkage(Linkage L) {
-  return L == UniqueExternalLinkage || L == ExternalLinkage;
+inline bool isExternallyVisible(Linkage L) {
+  return L == ExternalLinkage || L == VisibleNoLinkage;
+}
+
+inline Linkage getFormalLinkage(Linkage L) {
+  if (L == UniqueExternalLinkage)
+    return ExternalLinkage;
+  if (L == VisibleNoLinkage)
+    return NoLinkage;
+  return L;
 }
 
-/// \brief Compute the minimum linkage given two linages.
+inline bool isExternalFormalLinkage(Linkage L) {
+  return getFormalLinkage(L) == ExternalLinkage;
+}
+
+/// \brief Compute the minimum linkage given two linkages.
+///
+/// The linkage can be interpreted as a pair formed by the formal linkage and
+/// a boolean for external visibility. This is just what getFormalLinkage and
+/// isExternallyVisible return. We want the minimum of both components. The
+/// Linkage enum is defined in an order that makes this simple, we just need
+/// special cases for when VisibleNoLinkage would lose the visible bit and
+/// become NoLinkage.
 inline Linkage minLinkage(Linkage L1, Linkage L2) {
-  return L1 < L2? L1 : L2;
+  if (L2 == VisibleNoLinkage)
+    std::swap(L1, L2);
+  if (L1 == VisibleNoLinkage) {
+    if (L2 == InternalLinkage)
+      return NoLinkage;
+    if (L2 == UniqueExternalLinkage)
+      return NoLinkage;
+  }
+  return L1 < L2 ? L1 : L2;
 }
 
 } // end namespace clang
diff --git a/include/clang/Basic/Module.h b/include/clang/Basic/Module.h
index d2a43f0219e6..e8d774e1eb54 100644
--- a/include/clang/Basic/Module.h
+++ b/include/clang/Basic/Module.h
@@ -16,6 +16,7 @@
 #define LLVM_CLANG_BASIC_MODULE_H
 
 #include "clang/Basic/SourceLocation.h"
+#include "llvm/ADT/DenseSet.h"
 #include "llvm/ADT/PointerIntPair.h"
 #include "llvm/ADT/PointerUnion.h"
 #include "llvm/ADT/SetVector.h"
@@ -37,6 +38,7 @@ class FileEntry;
 class FileManager;
 class LangOptions;
 class TargetInfo;
+class IdentifierInfo;
   
 /// \brief Describes the name of a module.
 typedef SmallVector<std::pair<std::string, SourceLocation>, 2> ModuleId;
@@ -75,19 +77,28 @@ private:
   /// \brief top-level header filenames that aren't resolved to FileEntries yet.
   std::vector<std::string> TopHeaderNames;
 
+  /// \brief Cache of modules visible to lookup in this module.
+  mutable llvm::DenseSet<const Module*> VisibleModulesCache;
+
 public:
   /// \brief The headers that are part of this module.
-  SmallVector<const FileEntry *, 2> Headers;
+  SmallVector<const FileEntry *, 2> NormalHeaders;
 
   /// \brief The headers that are explicitly excluded from this module.
   SmallVector<const FileEntry *, 2> ExcludedHeaders;
 
+  /// \brief The headers that are private to this module.
+  llvm::SmallVector<const FileEntry *, 2> PrivateHeaders;
+
+  /// \brief An individual requirement: a feature name and a flag indicating
+  /// the required state of that feature.
+  typedef std::pair<std::string, bool> Requirement;
+
   /// \brief The set of language features required to use this module.
   ///
-  /// If any of these features is not present, the \c IsAvailable bit
-  /// will be false to indicate that this (sub)module is not
-  /// available.
-  SmallVector<std::string, 2> Requires;
+  /// If any of these requirements are not available, the \c IsAvailable bit
+  /// will be false to indicate that this (sub)module is not available.
+  SmallVector<Requirement, 2> Requirements;
 
   /// \brief Whether this module is available in the current
   /// translation unit.
@@ -176,6 +187,12 @@ public:
   /// \brief The set of export declarations that have yet to be resolved.
   SmallVector<UnresolvedExportDecl, 2> UnresolvedExports;
 
+  /// \brief The directly used modules.
+  SmallVector<Module *, 2> DirectUses;
+
+  /// \brief The set of use declarations that have yet to be resolved.
+  SmallVector<ModuleId, 2> UnresolvedDirectUses;
+
   /// \brief A library or framework to link against when an entity from this
   /// module is used.
   struct LinkLibrary {
@@ -254,12 +271,12 @@ public:
   ///
   /// \param Target The target options used for the current translation unit.
   ///
-  /// \param Feature If this module is unavailable, this parameter
-  /// will be set to one of the features that is required for use of
-  /// this module (but is not available).
+  /// \param Req If this module is unavailable, this parameter
+  /// will be set to one of the requirements that is not met for use of
+  /// this module.
   bool isAvailable(const LangOptions &LangOpts, 
                    const TargetInfo &Target,
-                   StringRef &Feature) const;
+                   Requirement &Req) const;
 
   /// \brief Determine whether this module is a submodule.
   bool isSubModule() const { return Parent != 0; }
@@ -353,12 +370,16 @@ public:
   /// \param Feature The feature that is required by this module (and
   /// its submodules).
   ///
+  /// \param RequiredState The required state of this feature: \c true
+  /// if it must be present, \c false if it must be absent.
+  ///
   /// \param LangOpts The set of language options that will be used to
   /// evaluate the availability of this feature.
   ///
   /// \param Target The target options that will be used to evaluate the
   /// availability of this feature.
-  void addRequirement(StringRef Feature, const LangOptions &LangOpts,
+  void addRequirement(StringRef Feature, bool RequiredState,
+                      const LangOptions &LangOpts,
                       const TargetInfo &Target);
 
   /// \brief Find the submodule with the given name.
@@ -366,6 +387,14 @@ public:
   /// \returns The submodule if found, or NULL otherwise.
   Module *findSubmodule(StringRef Name) const;
 
+  /// \brief Determine whether the specified module would be visible to
+  /// a lookup at the end of this module.
+  bool isModuleVisible(const Module *M) const {
+    if (VisibleModulesCache.empty())
+      buildVisibleModulesCache();
+    return VisibleModulesCache.count(M);
+  }
+
   typedef std::vector<Module *>::iterator submodule_iterator;
   typedef std::vector<Module *>::const_iterator submodule_const_iterator;
   
@@ -374,7 +403,10 @@ public:
   submodule_iterator submodule_end()   { return SubModules.end(); }
   submodule_const_iterator submodule_end() const { return SubModules.end(); }
 
-  /// \brief Returns the exported modules based on the wildcard restrictions.
+  /// \brief Appends this module's list of exported modules to \p Exported.
+  ///
+  /// This provides a subset of immediately imported modules (the ones that are
+  /// directly exported), not the complete set of exported modules.
   void getExportedModules(SmallVectorImpl<Module *> &Exported) const;
 
   static StringRef getModuleInputBufferName() {
@@ -387,6 +419,9 @@ public:
   
   /// \brief Dump the contents of this module to the given output stream.
   void dump() const;
+
+private:
+  void buildVisibleModulesCache() const;
 };
 
 } // end namespace clang
diff --git a/include/clang/Basic/ObjCRuntime.h b/include/clang/Basic/ObjCRuntime.h
index 18ef64a31527..4c6449750373 100644
--- a/include/clang/Basic/ObjCRuntime.h
+++ b/include/clang/Basic/ObjCRuntime.h
@@ -79,7 +79,7 @@ public:
     case GCC: return false;
     case MacOSX: return true;
     case GNUstep: return true;
-    case ObjFW: return false;
+    case ObjFW: return true;
     case iOS: return true;
     }
     llvm_unreachable("bad kind");
@@ -98,9 +98,8 @@ public:
           Arch == llvm::Triple::x86 ||
           Arch == llvm::Triple::x86_64)
         return false;
-      // Mac runtimes use legacy dispatch everywhere except x86-64
-    } else if (isNeXTFamily() && isNonFragile())
-        return Arch != llvm::Triple::x86_64;
+    }
+    // Mac runtimes use legacy dispatch everywhere now.
     return true;
   }
 
diff --git a/include/clang/Basic/OpenMPKinds.def b/include/clang/Basic/OpenMPKinds.def
index f968977f64bc..6d1a7b27b749 100644
--- a/include/clang/Basic/OpenMPKinds.def
+++ b/include/clang/Basic/OpenMPKinds.def
@@ -7,7 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 /// \file
-/// \brief This file defines the list of supported OpenMP directives and 
+/// \brief This file defines the list of supported OpenMP directives and
 /// clauses.
 ///
 //===----------------------------------------------------------------------===//
@@ -15,9 +15,38 @@
 #ifndef OPENMP_DIRECTIVE
 #  define OPENMP_DIRECTIVE(Name)
 #endif
+#ifndef OPENMP_CLAUSE
+#  define OPENMP_CLAUSE(Name, Class)
+#endif
+#ifndef OPENMP_PARALLEL_CLAUSE
+#  define OPENMP_PARALLEL_CLAUSE(Name)
+#endif
+#ifndef OPENMP_DEFAULT_KIND
+#  define OPENMP_DEFAULT_KIND(Name)
+#endif
 
 // OpenMP directives.
 OPENMP_DIRECTIVE(threadprivate)
 OPENMP_DIRECTIVE(parallel)
+OPENMP_DIRECTIVE(task)
+
+// OpenMP clauses.
+OPENMP_CLAUSE(default, OMPDefaultClause)
+OPENMP_CLAUSE(private, OMPPrivateClause)
+OPENMP_CLAUSE(firstprivate, OMPFirstprivateClause)
+OPENMP_CLAUSE(shared,  OMPSharedClause)
+
+// Clauses allowed for OpenMP directives.
+OPENMP_PARALLEL_CLAUSE(default)
+OPENMP_PARALLEL_CLAUSE(private)
+OPENMP_PARALLEL_CLAUSE(firstprivate)
+OPENMP_PARALLEL_CLAUSE(shared)
+
+// Static attributes for 'default' clause.
+OPENMP_DEFAULT_KIND(none)
+OPENMP_DEFAULT_KIND(shared)
 
+#undef OPENMP_DEFAULT_KIND
 #undef OPENMP_DIRECTIVE
+#undef OPENMP_CLAUSE
+#undef OPENMP_PARALLEL_CLAUSE
diff --git a/include/clang/Basic/OpenMPKinds.h b/include/clang/Basic/OpenMPKinds.h
index c90e9a0a76d5..5b4573124f21 100644
--- a/include/clang/Basic/OpenMPKinds.h
+++ b/include/clang/Basic/OpenMPKinds.h
@@ -28,9 +28,37 @@ enum OpenMPDirectiveKind {
   NUM_OPENMP_DIRECTIVES
 };
 
+/// \brief OpenMP clauses.
+enum OpenMPClauseKind {
+  OMPC_unknown = 0,
+#define OPENMP_CLAUSE(Name, Class) \
+  OMPC_##Name,
+#include "clang/Basic/OpenMPKinds.def"
+  OMPC_threadprivate,
+  NUM_OPENMP_CLAUSES
+};
+
+/// \brief OpenMP attributes for 'default' clause.
+enum OpenMPDefaultClauseKind {
+  OMPC_DEFAULT_unknown = 0,
+#define OPENMP_DEFAULT_KIND(Name) \
+  OMPC_DEFAULT_##Name,
+#include "clang/Basic/OpenMPKinds.def"
+  NUM_OPENMP_DEFAULT_KINDS
+};
+
 OpenMPDirectiveKind getOpenMPDirectiveKind(llvm::StringRef Str);
 const char *getOpenMPDirectiveName(OpenMPDirectiveKind Kind);
 
+OpenMPClauseKind getOpenMPClauseKind(llvm::StringRef Str);
+const char *getOpenMPClauseName(OpenMPClauseKind Kind);
+
+unsigned getOpenMPSimpleClauseType(OpenMPClauseKind Kind, llvm::StringRef Str);
+const char *getOpenMPSimpleClauseTypeName(OpenMPClauseKind Kind, unsigned Type);
+
+bool isAllowedClauseForDirective(OpenMPDirectiveKind DKind,
+                                 OpenMPClauseKind CKind);
+
 }
 
 #endif
diff --git a/include/clang/Basic/OperatorKinds.h b/include/clang/Basic/OperatorKinds.h
index 108014faabe1..2ceab9cbab9d 100644
--- a/include/clang/Basic/OperatorKinds.h
+++ b/include/clang/Basic/OperatorKinds.h
@@ -30,7 +30,7 @@ enum OverloadedOperatorKind {
 /// \brief Retrieve the spelling of the given overloaded operator, without 
 /// the preceding "operator" keyword.
 const char *getOperatorSpelling(OverloadedOperatorKind Operator);
-  
+
 } // end namespace clang
 
 #endif
diff --git a/include/clang/Basic/PartialDiagnostic.h b/include/clang/Basic/PartialDiagnostic.h
index 3f68160f69a6..dd29926fce73 100644
--- a/include/clang/Basic/PartialDiagnostic.h
+++ b/include/clang/Basic/PartialDiagnostic.h
@@ -368,6 +368,27 @@ public:
   }
 
   friend inline const PartialDiagnostic &operator<<(const PartialDiagnostic &PD,
+                                                    const IdentifierInfo *II) {
+    PD.AddTaggedVal(reinterpret_cast<intptr_t>(II),
+                    DiagnosticsEngine::ak_identifierinfo);
+    return PD;
+  }
+
+  // Adds a DeclContext to the diagnostic. The enable_if template magic is here
+  // so that we only match those arguments that are (statically) DeclContexts;
+  // other arguments that derive from DeclContext (e.g., RecordDecls) will not
+  // match.
+  template<typename T>
+  friend inline
+  typename llvm::enable_if<llvm::is_same<T, DeclContext>,
+                           const PartialDiagnostic &>::type
+  operator<<(const PartialDiagnostic &PD, T *DC) {
+    PD.AddTaggedVal(reinterpret_cast<intptr_t>(DC),
+                    DiagnosticsEngine::ak_declcontext);
+    return PD;
+  }
+
+  friend inline const PartialDiagnostic &operator<<(const PartialDiagnostic &PD,
                                                     const SourceRange &R) {
     PD.AddSourceRange(CharSourceRange::getTokenRange(R));
     return PD;
diff --git a/include/clang/Basic/Sanitizers.def b/include/clang/Basic/Sanitizers.def
index 709ec8d0376f..c9b31a39aa55 100644
--- a/include/clang/Basic/Sanitizers.def
+++ b/include/clang/Basic/Sanitizers.def
@@ -54,13 +54,17 @@ SANITIZER("memory", Memory)
 // ThreadSanitizer
 SANITIZER("thread", Thread)
 
+// LeakSanitizer
+SANITIZER("leak", Leak)
+
 // UndefinedBehaviorSanitizer
 SANITIZER("alignment", Alignment)
+SANITIZER("array-bounds", ArrayBounds)
 SANITIZER("bool", Bool)
-SANITIZER("bounds", Bounds)
 SANITIZER("enum", Enum)
 SANITIZER("float-cast-overflow", FloatCastOverflow)
 SANITIZER("float-divide-by-zero", FloatDivideByZero)
+SANITIZER("function", Function)
 SANITIZER("integer-divide-by-zero", IntegerDivideByZero)
 SANITIZER("null", Null)
 SANITIZER("object-size", ObjectSize)
@@ -74,20 +78,23 @@ SANITIZER("vptr", Vptr)
 // IntegerSanitizer
 SANITIZER("unsigned-integer-overflow", UnsignedIntegerOverflow)
 
+// DataFlowSanitizer
+SANITIZER("dataflow", DataFlow)
+
 // -fsanitize=undefined includes all the sanitizers which have low overhead, no
 // ABI or address space layout implications, and only catch undefined behavior.
 SANITIZER_GROUP("undefined", Undefined,
-                Alignment | Bool | Bounds | Enum | FloatCastOverflow |
-                FloatDivideByZero | IntegerDivideByZero | Null | ObjectSize |
-                Return | Shift | SignedIntegerOverflow | Unreachable |
-                VLABound | Vptr)
+                Alignment | Bool | ArrayBounds | Enum | FloatCastOverflow |
+                FloatDivideByZero | Function | IntegerDivideByZero | Null |
+                ObjectSize | Return | Shift | SignedIntegerOverflow |
+                Unreachable | VLABound | Vptr)
 
 // -fsanitize=undefined-trap (and its alias -fcatch-undefined-behavior) includes
 // all sanitizers included by -fsanitize=undefined, except those that require
 // runtime support.  This group is generally used in conjunction with the
 // -fsanitize-undefined-trap-on-error flag.
 SANITIZER_GROUP("undefined-trap", UndefinedTrap,
-                Alignment | Bool | Bounds | Enum | FloatCastOverflow |
+                Alignment | Bool | ArrayBounds | Enum | FloatCastOverflow |
                 FloatDivideByZero | IntegerDivideByZero | Null | ObjectSize |
                 Return | Shift | SignedIntegerOverflow | Unreachable |
                 VLABound)
@@ -96,5 +103,9 @@ SANITIZER_GROUP("integer", Integer,
                 SignedIntegerOverflow | UnsignedIntegerOverflow | Shift |
                 IntegerDivideByZero)
 
+// -fbounds-checking
+SANITIZER("local-bounds", LocalBounds)
+SANITIZER_GROUP("bounds", Bounds, ArrayBounds | LocalBounds)
+
 #undef SANITIZER
 #undef SANITIZER_GROUP
diff --git a/include/clang/Basic/SourceLocation.h b/include/clang/Basic/SourceLocation.h
index 143beb67e0b7..10ae07b82498 100644
--- a/include/clang/Basic/SourceLocation.h
+++ b/include/clang/Basic/SourceLocation.h
@@ -89,7 +89,7 @@ class SourceLocation {
   friend class SourceManager;
   friend class ASTReader;
   friend class ASTWriter;
-  enum {
+  enum LLVM_ENUM_INT_TYPE(unsigned) {
     MacroIDBit = 1U << 31
   };
 public:
diff --git a/include/clang/Basic/SourceManager.h b/include/clang/Basic/SourceManager.h
index f82b196929a3..6aab998bd898 100644
--- a/include/clang/Basic/SourceManager.h
+++ b/include/clang/Basic/SourceManager.h
@@ -1005,7 +1005,7 @@ public:
       return SourceLocation();
     
     unsigned FileOffset = Entry.getOffset();
-    return SourceLocation::getFileLoc(FileOffset + getFileIDSize(FID) - 1);
+    return SourceLocation::getFileLoc(FileOffset + getFileIDSize(FID));
   }
 
   /// \brief Returns the include location if \p FID is a \#include'd file
@@ -1161,6 +1161,22 @@ public:
   /// expansion but not the expansion of an argument to a function-like macro.
   bool isMacroBodyExpansion(SourceLocation Loc) const;
 
+  /// \brief Returns true if the given MacroID location points at the beginning
+  /// of the immediate macro expansion.
+  ///
+  /// \param MacroBegin If non-null and function returns true, it is set to the
+  /// begin location of the immediate macro expansion.
+  bool isAtStartOfImmediateMacroExpansion(SourceLocation Loc,
+                                          SourceLocation *MacroBegin = 0) const;
+
+  /// \brief Returns true if the given MacroID location points at the character
+  /// end of the immediate macro expansion.
+  ///
+  /// \param MacroEnd If non-null and function returns true, it is set to the
+  /// character end location of the immediate macro expansion.
+  bool isAtEndOfImmediateMacroExpansion(SourceLocation Loc,
+                                        SourceLocation *MacroEnd = 0) const;
+
   /// \brief Returns true if \p Loc is inside the [\p Start, +\p Length)
   /// chunk of the source location address space.
   ///
@@ -1276,14 +1292,28 @@ public:
   PresumedLoc getPresumedLoc(SourceLocation Loc,
                              bool UseLineDirectives = true) const;
 
-  /// \brief Returns true if both SourceLocations correspond to the same file.
-  bool isFromSameFile(SourceLocation Loc1, SourceLocation Loc2) const {
+  /// \brief Returns whether the PresumedLoc for a given SourceLocation is 
+  /// in the main file.
+  ///
+  /// This computes the "presumed" location for a SourceLocation, then checks
+  /// whether it came from a file other than the main file. This is different
+  /// from isWrittenInMainFile() because it takes line marker directives into
+  /// account.
+  bool isInMainFile(SourceLocation Loc) const;
+
+  /// \brief Returns true if the spelling locations for both SourceLocations
+  /// are part of the same file buffer.
+  ///
+  /// This check ignores line marker directives.
+  bool isWrittenInSameFile(SourceLocation Loc1, SourceLocation Loc2) const {
     return getFileID(Loc1) == getFileID(Loc2);
   }
 
-  /// \brief Returns true if the file of provided SourceLocation is the main
-  /// file.
-  bool isFromMainFile(SourceLocation Loc) const {
+  /// \brief Returns true if the spelling location for the given location
+  /// is in the main file buffer.
+  ///
+  /// This check ignores line marker directives.
+  bool isWrittenInMainFile(SourceLocation Loc) const {
     return getFileID(Loc) == getMainFileID();
   }
 
@@ -1467,7 +1497,7 @@ public:
       if (Invalid) *Invalid = true;
       return LocalSLocEntryTable[0];
     }
-    return getSLocEntryByID(FID.ID);
+    return getSLocEntryByID(FID.ID, Invalid);
   }
 
   unsigned getNextLocalOffset() const { return NextLocalOffset; }
@@ -1531,11 +1561,11 @@ private:
   const SrcMgr::SLocEntry &loadSLocEntry(unsigned Index, bool *Invalid) const;
 
   /// \brief Get the entry with the given unwrapped FileID.
-  const SrcMgr::SLocEntry &getSLocEntryByID(int ID) const {
+  const SrcMgr::SLocEntry &getSLocEntryByID(int ID, bool *Invalid = 0) const {
     assert(ID != -1 && "Using FileID sentinel value");
     if (ID < 0)
-      return getLoadedSLocEntryByID(ID);
-    return getLocalSLocEntry(static_cast<unsigned>(ID));
+      return getLoadedSLocEntryByID(ID, Invalid);
+    return getLocalSLocEntry(static_cast<unsigned>(ID), Invalid);
   }
 
   const SrcMgr::SLocEntry &getLoadedSLocEntryByID(int ID,
@@ -1570,6 +1600,14 @@ private:
     return SLocOffset < getSLocEntryByID(FID.ID+1).getOffset();
   }
 
+  /// \brief Returns the previous in-order FileID or an invalid FileID if there
+  /// is no previous one.
+  FileID getPreviousFileID(FileID FID) const;
+
+  /// \brief Returns the next in-order FileID or an invalid FileID if there is
+  /// no next one.
+  FileID getNextFileID(FileID FID) const;
+
   /// \brief Create a new fileID for the specified ContentCache and
   /// include position.
   ///
diff --git a/include/clang/Basic/Specifiers.h b/include/clang/Basic/Specifiers.h
index eb3fc659a874..0b8093969ae3 100644
--- a/include/clang/Basic/Specifiers.h
+++ b/include/clang/Basic/Specifiers.h
@@ -131,8 +131,8 @@ namespace clang {
     OK_ObjCSubscript
   };
 
-  // \brief Describes the kind of template specialization that a
-  // particular template specialization declaration represents.
+  /// \brief Describes the kind of template specialization that a
+  /// particular template specialization declaration represents.
   enum TemplateSpecializationKind {
     /// This template specialization was formed from a template-id but
     /// has not yet been declared, defined, or instantiated.
@@ -154,6 +154,13 @@ namespace clang {
     TSK_ExplicitInstantiationDefinition
   };
 
+  /// \brief Determine whether this template specialization kind refers
+  /// to an instantiation of an entity (as opposed to a non-template or
+  /// an explicit specialization).
+  inline bool isTemplateInstantiation(TemplateSpecializationKind Kind) {
+    return Kind != TSK_Undeclared && Kind != TSK_ExplicitSpecialization;
+  }
+
   /// \brief Thread storage-class-specifier.
   enum ThreadStorageClassSpecifier {
     TSCS_unspecified,
@@ -200,18 +207,40 @@ namespace clang {
 
   /// \brief CallingConv - Specifies the calling convention that a function uses.
   enum CallingConv {
-    CC_Default,
     CC_C,           // __attribute__((cdecl))
     CC_X86StdCall,  // __attribute__((stdcall))
     CC_X86FastCall, // __attribute__((fastcall))
     CC_X86ThisCall, // __attribute__((thiscall))
     CC_X86Pascal,   // __attribute__((pascal))
+    CC_X86_64Win64, // __attribute__((ms_abi))
+    CC_X86_64SysV,  // __attribute__((sysv_abi))
     CC_AAPCS,       // __attribute__((pcs("aapcs")))
     CC_AAPCS_VFP,   // __attribute__((pcs("aapcs-vfp")))
     CC_PnaclCall,   // __attribute__((pnaclcall))
     CC_IntelOclBicc // __attribute__((intel_ocl_bicc))
   };
 
+  /// \brief Checks whether the given calling convention is callee-cleanup.
+  inline bool isCalleeCleanup(CallingConv CC) {
+    switch (CC) {
+    case CC_X86StdCall:
+    case CC_X86FastCall:
+    case CC_X86ThisCall:
+    case CC_X86Pascal:
+      return true;
+    default:
+      return false;
+    }
+  }
+
+  /// \brief The storage duration for an object (per C++ [basic.stc]).
+  enum StorageDuration {
+    SD_FullExpression, ///< Full-expression storage duration (for temporaries).
+    SD_Automatic,      ///< Automatic storage duration (most local variables).
+    SD_Thread,         ///< Thread storage duration.
+    SD_Static,         ///< Static storage duration.
+    SD_Dynamic         ///< Dynamic storage duration.
+  };
 } // end namespace clang
 
 #endif // LLVM_CLANG_BASIC_SPECIFIERS_H
diff --git a/include/clang/Basic/StmtNodes.td b/include/clang/Basic/StmtNodes.td
index cbfce83c4b57..69851a9d5283 100644
--- a/include/clang/Basic/StmtNodes.td
+++ b/include/clang/Basic/StmtNodes.td
@@ -110,6 +110,7 @@ def CXXThrowExpr : DStmt<Expr>;
 def CXXDefaultArgExpr : DStmt<Expr>;
 def CXXDefaultInitExpr : DStmt<Expr>;
 def CXXScalarValueInitExpr : DStmt<Expr>;
+def CXXStdInitializerListExpr : DStmt<Expr>;
 def CXXNewExpr : DStmt<Expr>;
 def CXXDeleteExpr : DStmt<Expr>;
 def CXXPseudoDestructorExpr : DStmt<Expr>;
@@ -161,6 +162,7 @@ def CUDAKernelCallExpr : DStmt<CallExpr>;
 
 // Clang Extensions.
 def ShuffleVectorExpr : DStmt<Expr>;
+def ConvertVectorExpr : DStmt<Expr>;
 def BlockExpr : DStmt<Expr>;
 def OpaqueValueExpr : DStmt<Expr>;
 
@@ -174,3 +176,7 @@ def MSDependentExistsStmt : Stmt;
 
 // OpenCL Extensions.
 def AsTypeExpr : DStmt<Expr>;
+
+// OpenMP Directives.
+def OMPExecutableDirective : Stmt<1>;
+def OMPParallelDirective : DStmt<OMPExecutableDirective>;
diff --git a/include/clang/Basic/TargetBuiltins.h b/include/clang/Basic/TargetBuiltins.h
index 66e378fa9b45..ed3cc49fedb9 100644
--- a/include/clang/Basic/TargetBuiltins.h
+++ b/include/clang/Basic/TargetBuiltins.h
@@ -90,8 +90,10 @@ namespace clang {
       Int64,
       Poly8,
       Poly16,
+      Poly64,
       Float16,
-      Float32
+      Float32,
+      Float64
     };
 
     NeonTypeFlags(unsigned F) : Flags(F) {}
@@ -130,6 +132,16 @@ namespace clang {
         LastTSBuiltin
     };
   }
+
+  /// \brief XCore builtins
+  namespace XCore {
+    enum {
+        LastTIBuiltin = clang::Builtin::FirstTSBuiltin-1,
+#define BUILTIN(ID, TYPE, ATTRS) BI##ID,
+#include "clang/Basic/BuiltinsXCore.def"
+        LastTSBuiltin
+    };
+  }
 } // end namespace clang.
 
 #endif
diff --git a/include/clang/Basic/TargetCXXABI.h b/include/clang/Basic/TargetCXXABI.h
index c9d28f8774b6..1590cca62337 100644
--- a/include/clang/Basic/TargetCXXABI.h
+++ b/include/clang/Basic/TargetCXXABI.h
@@ -131,24 +131,36 @@ public:
   /// \brief Is the default C++ member function calling convention
   /// the same as the default calling convention?
   bool isMemberFunctionCCDefault() const {
-    // Right now, this is always true for Microsoft.
+    // Right now, this is always false for Microsoft.
     return !isMicrosoft();
   }
 
+  /// Are temporary objects passed by value to a call destroyed by the callee?
+  /// This is a fundamental language change, since it implies that objects
+  /// passed by value do *not* live to the end of the full expression.
+  /// Temporaries passed to a function taking a const reference live to the end
+  /// of the full expression as usual.  Both the caller and the callee must
+  /// have access to the destructor, while only the caller needs the
+  /// destructor if this is false.
+  bool isArgumentDestroyedByCallee() const {
+    return isMicrosoft();
+  }
+
   /// \brief Does this ABI have different entrypoints for complete-object
   /// and base-subobject constructors?
   bool hasConstructorVariants() const {
     return isItaniumFamily();
   }
 
-  /// \brief Does this ABI have different entrypoints for complete-object
-  /// and base-subobject destructors?
-  bool hasDestructorVariants() const {
+  /// \brief Does this ABI allow virtual bases to be primary base classes?
+  bool hasPrimaryVBases() const {
     return isItaniumFamily();
   }
 
-  /// \brief Does this ABI allow virtual bases to be primary base classes?
-  bool hasPrimaryVBases() const {
+  /// \brief Does this ABI use key functions?  If so, class data such as the
+  /// vtable is emitted with strong linkage by the TU containing the key
+  /// function.
+  bool hasKeyFunctions() const {
     return isItaniumFamily();
   }
 
diff --git a/include/clang/Basic/TargetInfo.h b/include/clang/Basic/TargetInfo.h
index 49b26ac8e372..047872dd4017 100644
--- a/include/clang/Basic/TargetInfo.h
+++ b/include/clang/Basic/TargetInfo.h
@@ -86,7 +86,7 @@ protected:
   unsigned ComplexLongDoubleUsesFP2Ret : 1;
 
   // TargetInfo Constructor.  Default initializes all fields.
-  TargetInfo(const std::string &T);
+  TargetInfo(const llvm::Triple &T);
 
 public:
   /// \brief Construct a target for the given options.
@@ -112,6 +112,8 @@ public:
   ///===---- Target Data Type Query Methods -------------------------------===//
   enum IntType {
     NoInt = 0,
+    SignedChar,
+    UnsignedChar,
     SignedShort,
     UnsignedShort,
     SignedInt,
@@ -123,6 +125,7 @@ public:
   };
 
   enum RealType {
+    NoFloat = 255,
     Float = 0,
     Double,
     LongDouble
@@ -199,6 +202,10 @@ protected:
   /// zero length bitfield, regardless of the zero length bitfield type.
   unsigned ZeroLengthBitfieldBoundary;
 
+  /// \brief Specify if mangling based on address space map should be used or
+  /// not for language specific address spaces
+  bool UseAddrSpaceMapMangling;
+
 public:
   IntType getSizeType() const { return SizeType; }
   IntType getIntMaxType() const { return IntMaxType; }
@@ -220,6 +227,12 @@ public:
   /// For example, SignedInt -> getIntWidth().
   unsigned getTypeWidth(IntType T) const;
 
+  /// \brief Return integer type with specified width.
+  IntType getIntTypeByWidth(unsigned BitWidth, bool IsSigned) const;
+
+  /// \brief Return floating point type with specified width.
+  RealType getRealTypeByWidth(unsigned BitWidth) const;
+
   /// \brief Return the alignment (in bits) of the specified integer type enum.
   ///
   /// For example, SignedInt -> getIntAlign().
@@ -345,11 +358,11 @@ public:
   unsigned getUnwindWordWidth() const { return getPointerWidth(0); }
 
   /// \brief Return the "preferred" register width on this target.
-  uint64_t getRegisterWidth() const {
+  unsigned getRegisterWidth() const {
     // Currently we assume the register width on the target matches the pointer
     // width, we can introduce a new variable for this if/when some target wants
     // it.
-    return LongWidth; 
+    return PointerWidth;
   }
 
   /// \brief Returns the default value of the __USER_LABEL_PREFIX__ macro,
@@ -422,6 +435,12 @@ public:
     return ComplexLongDoubleUsesFP2Ret;
   }
 
+  /// \brief Specify if mangling based on address space map should be used or
+  /// not for language specific address spaces
+  bool useAddressSpaceMapMangling() const {
+    return UseAddrSpaceMapMangling;
+  }
+
   ///===---- Other target property query methods --------------------------===//
 
   /// \brief Appends the target-specific \#define values for this
@@ -653,6 +672,13 @@ public:
     return false;
   }
 
+  /// \brief Use the specified unit for FP math.
+  ///
+  /// \return False on error (invalid unit name).
+  virtual bool setFPMath(StringRef Name) {
+    return false;
+  }
+
   /// \brief Use this specified C++ ABI.
   ///
   /// \return False on error (invalid C++ ABI name).
@@ -672,12 +698,10 @@ public:
 
   /// \brief Enable or disable a specific target feature;
   /// the feature name must be valid.
-  ///
-  /// \return False on error (invalid feature name).
-  virtual bool setFeatureEnabled(llvm::StringMap<bool> &Features,
+  virtual void setFeatureEnabled(llvm::StringMap<bool> &Features,
                                  StringRef Name,
                                  bool Enabled) const {
-    return false;
+    Features[Name] = Enabled;
   }
 
   /// \brief Perform initialization based on the user configured
@@ -687,7 +711,11 @@ public:
   ///
   /// The target may modify the features list, to change which options are
   /// passed onwards to the backend.
-  virtual void HandleTargetFeatures(std::vector<std::string> &Features) {
+  ///
+  /// \return  False on error.
+  virtual bool handleTargetFeatures(std::vector<std::string> &Features,
+                                    DiagnosticsEngine &Diags) {
+    return true;
   }
 
   /// \brief Determine whether the given target has the given feature.
@@ -770,7 +798,6 @@ public:
       default:
         return CCCR_Warning;
       case CC_C:
-      case CC_Default:
         return CCCR_OK;
     }
   }
@@ -790,7 +817,7 @@ protected:
   virtual void getGCCRegAliases(const GCCRegAlias *&Aliases,
                                 unsigned &NumAliases) const = 0;
   virtual void getGCCAddlRegNames(const AddlRegName *&Addl,
-				  unsigned &NumAddl) const {
+                                  unsigned &NumAddl) const {
     Addl = 0;
     NumAddl = 0;
   }
diff --git a/include/clang/Basic/TargetOptions.h b/include/clang/Basic/TargetOptions.h
index c2183fd29d56..9909182ab6dd 100644
--- a/include/clang/Basic/TargetOptions.h
+++ b/include/clang/Basic/TargetOptions.h
@@ -32,6 +32,9 @@ public:
   /// If given, the name of the target CPU to generate code for.
   std::string CPU;
 
+  /// If given, the unit to use for floating point math.
+  std::string FPMath;
+
   /// If given, the name of the target ABI to use.
   std::string ABI;
 
diff --git a/include/clang/Basic/TemplateKinds.h b/include/clang/Basic/TemplateKinds.h
index dda011a54e18..c5218933a226 100644
--- a/include/clang/Basic/TemplateKinds.h
+++ b/include/clang/Basic/TemplateKinds.h
@@ -27,6 +27,9 @@ enum TemplateNameKind {
   /// type. The template itself could be a class template, template
   /// template parameter, or C++0x template alias.
   TNK_Type_template,
+  /// The name refers to a variable template whose specialization produces a
+  /// variable.
+  TNK_Var_template,
   /// The name refers to a dependent template name. Whether the
   /// template name is assumed to refer to a type template or a
   /// function template depends on the context in which the template
diff --git a/include/clang/Basic/TokenKinds.def b/include/clang/Basic/TokenKinds.def
index bcf0f31dcbf6..6812cce2dbea 100644
--- a/include/clang/Basic/TokenKinds.def
+++ b/include/clang/Basic/TokenKinds.def
@@ -270,7 +270,7 @@ KEYWORD(__objc_no                   , KEYALL)
 
 // C++ 2.11p1: Keywords.
 KEYWORD(asm                         , KEYCXX|KEYGNU)
-KEYWORD(bool                        , BOOLSUPPORT|KEYALTIVEC)
+KEYWORD(bool                        , BOOLSUPPORT)
 KEYWORD(catch                       , KEYCXX)
 KEYWORD(class                       , KEYCXX)
 KEYWORD(const_cast                  , KEYCXX)
@@ -278,7 +278,7 @@ KEYWORD(delete                      , KEYCXX)
 KEYWORD(dynamic_cast                , KEYCXX)
 KEYWORD(explicit                    , KEYCXX)
 KEYWORD(export                      , KEYCXX)
-KEYWORD(false                       , BOOLSUPPORT|KEYALTIVEC)
+KEYWORD(false                       , BOOLSUPPORT)
 KEYWORD(friend                      , KEYCXX)
 KEYWORD(mutable                     , KEYCXX)
 KEYWORD(namespace                   , KEYCXX)
@@ -292,7 +292,7 @@ KEYWORD(static_cast                 , KEYCXX)
 KEYWORD(template                    , KEYCXX)
 KEYWORD(this                        , KEYCXX)
 KEYWORD(throw                       , KEYCXX)
-KEYWORD(true                        , BOOLSUPPORT|KEYALTIVEC)
+KEYWORD(true                        , BOOLSUPPORT)
 KEYWORD(try                         , KEYCXX)
 KEYWORD(typename                    , KEYCXX)
 KEYWORD(typeid                      , KEYCXX)
@@ -349,7 +349,10 @@ KEYWORD(__PRETTY_FUNCTION__         , KEYALL)
 KEYWORD(typeof                      , KEYGNU)
 
 // MS Extensions
+KEYWORD(__FUNCDNAME__               , KEYMS)
 KEYWORD(L__FUNCTION__               , KEYMS)
+KEYWORD(__is_interface_class        , KEYMS)
+KEYWORD(__is_sealed                 , KEYMS)
 
 // GNU and MS Type Traits
 KEYWORD(__has_nothrow_assign          , KEYCXX)
@@ -370,7 +373,6 @@ KEYWORD(__is_convertible_to           , KEYCXX)
 KEYWORD(__is_empty                    , KEYCXX)
 KEYWORD(__is_enum                     , KEYCXX)
 KEYWORD(__is_final                    , KEYCXX)
-KEYWORD(__is_interface_class          , KEYCXX)
 // Tentative name - there's no implementation of std::is_literal_type yet.
 KEYWORD(__is_literal                  , KEYCXX)
 // Name for GCC 4.6 compatibility - people have already written libraries using
@@ -509,6 +511,8 @@ ALIAS("__volatile__" , volatile   , KEYALL)
 // Microsoft extensions which should be disabled in strict conformance mode
 KEYWORD(__ptr64                       , KEYMS)
 KEYWORD(__ptr32                       , KEYMS)
+KEYWORD(__sptr                        , KEYMS)
+KEYWORD(__uptr                        , KEYMS)
 KEYWORD(__w64                         , KEYMS)
 KEYWORD(__uuidof                      , KEYMS | KEYBORLAND)
 KEYWORD(__try                         , KEYMS | KEYBORLAND)
@@ -524,6 +528,7 @@ KEYWORD(__interface                   , KEYMS)
 ALIAS("__int8"           , char       , KEYMS)
 ALIAS("__int16"          , short      , KEYMS)
 ALIAS("__int32"          , int        , KEYMS)
+ALIAS("__wchar_t"        , wchar_t    , KEYMS)
 ALIAS("_asm"             , asm        , KEYMS)
 ALIAS("_alignof"         , __alignof  , KEYMS)
 ALIAS("__builtin_alignof", __alignof  , KEYMS)
@@ -539,6 +544,7 @@ ALIAS("_declspec"        , __declspec , KEYMS)
 ALIAS("_pascal"      , __pascal   , KEYBORLAND)
 
 // Clang Extensions.
+KEYWORD(__builtin_convertvector   , KEYALL)
 ALIAS("__char16_t"   , char16_t   , KEYCXX)
 ALIAS("__char32_t"   , char32_t   , KEYCXX)
 
@@ -661,6 +667,9 @@ ANNOTATION(pragma_opencl_extension)
 ANNOTATION(pragma_openmp)
 ANNOTATION(pragma_openmp_end)
 
+// Annotation for module import translated from #include etc.
+ANNOTATION(module_include)
+
 #undef ANNOTATION
 #undef TESTING_KEYWORD
 #undef OBJC2_AT_KEYWORD
diff --git a/include/clang/Basic/TypeTraits.h b/include/clang/Basic/TypeTraits.h
index 16457969862a..fc53527188bb 100644
--- a/include/clang/Basic/TypeTraits.h
+++ b/include/clang/Basic/TypeTraits.h
@@ -57,6 +57,7 @@ namespace clang {
     UTT_IsReference,
     UTT_IsRvalueReference,
     UTT_IsScalar,
+    UTT_IsSealed,
     UTT_IsSigned,
     UTT_IsStandardLayout,
     UTT_IsTrivial,
diff --git a/include/clang/Basic/Visibility.h b/include/clang/Basic/Visibility.h
index b623b94a6787..6ac52ed6b5e1 100644
--- a/include/clang/Basic/Visibility.h
+++ b/include/clang/Basic/Visibility.h
@@ -49,7 +49,7 @@ inline Visibility minVisibility(Visibility L, Visibility R) {
 }
 
 class LinkageInfo {
-  uint8_t linkage_    : 2;
+  uint8_t linkage_    : 3;
   uint8_t visibility_ : 2;
   uint8_t explicit_   : 1;
 
@@ -89,6 +89,20 @@ public:
     mergeLinkage(other.getLinkage());
   }
 
+  void mergeExternalVisibility(Linkage L) {
+    Linkage ThisL = getLinkage();
+    if (!isExternallyVisible(L)) {
+      if (ThisL == VisibleNoLinkage)
+        ThisL = NoLinkage;
+      else if (ThisL == ExternalLinkage)
+        ThisL = UniqueExternalLinkage;
+    }
+    setLinkage(ThisL);
+  }
+  void mergeExternalVisibility(LinkageInfo Other) {
+    mergeExternalVisibility(Other.getLinkage());
+  }
+
   /// Merge in the visibility 'newVis'.
   void mergeVisibility(Visibility newVis, bool newExplicit) {
     Visibility oldVis = getVisibility();
diff --git a/include/clang/Basic/arm_neon.td b/include/clang/Basic/arm_neon.td
index 77bc797c5056..b918459f4e4a 100644
--- a/include/clang/Basic/arm_neon.td
+++ b/include/clang/Basic/arm_neon.td
@@ -18,31 +18,58 @@ def OP_NONE  : Op;
 def OP_UNAVAILABLE : Op;
 def OP_ADD   : Op;
 def OP_ADDL  : Op;
+def OP_ADDLHi : Op;
 def OP_ADDW  : Op;
+def OP_ADDWHi : Op;
 def OP_SUB   : Op;
 def OP_SUBL  : Op;
+def OP_SUBLHi : Op;
 def OP_SUBW  : Op;
+def OP_SUBWHi : Op;
 def OP_MUL   : Op;
 def OP_MLA   : Op;
 def OP_MLAL  : Op;
+def OP_MULLHi : Op;
+def OP_MULLHi_N : Op;
+def OP_MLALHi : Op;
+def OP_MLALHi_N : Op;
 def OP_MLS   : Op;
 def OP_MLSL  : Op;
+def OP_MLSLHi : Op;
+def OP_MLSLHi_N : Op;
 def OP_MUL_N : Op;
 def OP_MLA_N : Op;
 def OP_MLS_N : Op;
+def OP_FMLA_N : Op;
+def OP_FMLS_N : Op;
 def OP_MLAL_N : Op;
 def OP_MLSL_N : Op;
 def OP_MUL_LN: Op;
+def OP_MULX_LN: Op;
 def OP_MULL_LN : Op;
+def OP_MULLHi_LN : Op;
 def OP_MLA_LN: Op;
 def OP_MLS_LN: Op;
 def OP_MLAL_LN : Op;
+def OP_MLALHi_LN : Op;
 def OP_MLSL_LN : Op;
+def OP_MLSLHi_LN : Op;
 def OP_QDMULL_LN : Op;
+def OP_QDMULLHi_LN : Op;
 def OP_QDMLAL_LN : Op;
+def OP_QDMLALHi_LN : Op;
 def OP_QDMLSL_LN : Op;
+def OP_QDMLSLHi_LN : Op;
 def OP_QDMULH_LN : Op;
 def OP_QRDMULH_LN : Op;
+def OP_FMS_LN : Op;
+def OP_FMS_LNQ : Op;
+def OP_TRN1  : Op;
+def OP_ZIP1  : Op;
+def OP_UZP1  : Op;
+def OP_TRN2  : Op;
+def OP_ZIP2  : Op;
+def OP_UZP2  : Op;
 def OP_EQ    : Op;
 def OP_GE    : Op;
 def OP_LE    : Op;
@@ -65,10 +92,49 @@ def OP_SEL   : Op;
 def OP_REV64 : Op;
 def OP_REV32 : Op;
 def OP_REV16 : Op;
+def OP_XTN : Op;
+def OP_SQXTUN : Op;
+def OP_QXTN : Op;
+def OP_VCVT_NA_HI : Op;
+def OP_VCVT_EX_HI : Op;
+def OP_VCVTX_HI : Op;
 def OP_REINT : Op;
+def OP_ADDHNHi : Op;
+def OP_RADDHNHi : Op;
+def OP_SUBHNHi : Op;
+def OP_RSUBHNHi : Op;
 def OP_ABDL  : Op;
+def OP_ABDLHi : Op;
 def OP_ABA   : Op;
 def OP_ABAL  : Op;
+def OP_ABALHi : Op;
+def OP_QDMULLHi : Op;
+def OP_QDMULLHi_N : Op;
+def OP_QDMLALHi : Op;
+def OP_QDMLALHi_N : Op;
+def OP_QDMLSLHi : Op;
+def OP_QDMLSLHi_N : Op;
+def OP_DIV  : Op;
+def OP_LONG_HI : Op;
+def OP_NARROW_HI : Op;
+def OP_MOVL_HI : Op;
+def OP_COPY_LN : Op;
+def OP_COPYQ_LN : Op;
+def OP_COPY_LNQ : Op;
+def OP_SCALAR_MUL_LN : Op;
+def OP_SCALAR_MUL_LNQ : Op;
+def OP_SCALAR_MULX_LN : Op;
+def OP_SCALAR_MULX_LNQ : Op;
+def OP_SCALAR_VMULX_LN : Op;
+def OP_SCALAR_VMULX_LNQ : Op;
+def OP_SCALAR_QDMULL_LN : Op;
+def OP_SCALAR_QDMULL_LNQ : Op;
+def OP_SCALAR_QDMULH_LN : Op;
+def OP_SCALAR_QDMULH_LNQ : Op;
+def OP_SCALAR_QRDMULH_LN : Op;
+def OP_SCALAR_QRDMULH_LNQ : Op;
+def OP_SCALAR_GET_LN : Op;
+def OP_SCALAR_SET_LN : Op;
 
 class Inst <string n, string p, string t, Op o> {
   string Name = n;
@@ -76,7 +142,11 @@ class Inst <string n, string p, string t, Op o> {
   string Types = t;
   Op Operand = o;
   bit isShift = 0;
+  bit isScalarShift = 0;
+  bit isScalarNarrowShift = 0;
   bit isVCVT_N = 0;
+  bit isA64 = 0;
+  bit isCrypto = 0;
 
   // Certain intrinsics have different names than their representative
   // instructions. This field allows us to handle this correctly when we
@@ -123,18 +193,29 @@ class NoTestOpInst<string n, string p, string t, Op o> : Inst<n, p, t, o> {}
 // x: signed integer   (int/float args)
 // u: unsigned integer (int/float args)
 // f: float (int args)
+// F: double (int args)
 // d: default
 // g: default, ignore 'Q' size modifier.
+// j: default, force 'Q' size modifier.
 // w: double width elements, same num elts
 // n: double width elements, half num elts
 // h: half width elements, double num elts
+// q: half width elements, quad num elts
 // e: half width elements, double num elts, unsigned
+// m: half width elements, same num elts
 // i: constant int
 // l: constant uint64
 // s: scalar of element type
+// z: scalar of half width element type, signed
+// r: scalar of double width element type, signed
 // a: scalar of element type (splat to vector type)
+// b: scalar of unsigned integer/long type (int/float args)
+// $: scalar of signed integer/long type (int/float args)
+// y: scalar of float
+// o: scalar of double
 // k: default elt width, double num elts
-// #: array of default vectors
+// 2,3,4: array of default vectors
+// B,C,D: array of default elts, force 'Q' size modifier.
 // p: pointer type
 // c: const pointer type
 
@@ -145,10 +226,13 @@ class NoTestOpInst<string n, string p, string t, Op o> : Inst<n, p, t, o> {}
 // l: long
 // f: float
 // h: half-float
+// d: double
 
 // size modifiers:
+// S: scalar, only used for function mangling.
 // U: unsigned
 // Q: 128b
+// H: 128b without mangling 'q'
 // P: polynomial
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -206,7 +290,7 @@ let InstName = "vacgt" in {
 def VCAGT : IInst<"vcagt", "udd", "fQf">;
 def VCALT : IInst<"vcalt", "udd", "fQf">;
 }
-def VTST  : WInst<"vtst", "udd", "csiUcUsUiPcQcQsQiQUcQUsQUiQPc">;
+def VTST  : WInst<"vtst", "udd", "csiUcUsUiPcPsQcQsQiQUcQUsQUiQPcQPs">;
 
 ////////////////////////////////////////////////////////////////////////////////
 // E.3.5 Absolute Difference
@@ -452,3 +536,803 @@ def VREINTERPRET
 // Vector fused multiply-add operations
 
 def VFMA : SInst<"vfma", "dddd", "fQf">;
+
+////////////////////////////////////////////////////////////////////////////////
+// AArch64 Intrinsics
+
+let isA64 = 1 in {
+
+////////////////////////////////////////////////////////////////////////////////
+// Load/Store
+// With additional QUl, Ql, d, Qd, Pl, QPl type.
+def LD1 : WInst<"vld1", "dc",
+                "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsUcUsUiUlcsilhfdPcPsPlQPl">;
+def LD2 : WInst<"vld2", "2c",
+                "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsUcUsUiUlcsilhfdPcPsPlQPl">;
+def LD3 : WInst<"vld3", "3c",
+                "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsUcUsUiUlcsilhfdPcPsPlQPl">;
+def LD4 : WInst<"vld4", "4c",
+                "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsUcUsUiUlcsilhfdPcPsPlQPl">;
+def ST1 : WInst<"vst1", "vpd",
+                "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsUcUsUiUlcsilhfdPcPsPlQPl">;
+def ST2 : WInst<"vst2", "vp2",
+                "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsUcUsUiUlcsilhfdPcPsPlQPl">;
+def ST3 : WInst<"vst3", "vp3",
+                "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsUcUsUiUlcsilhfdPcPsPlQPl">;
+def ST4 : WInst<"vst4", "vp4",
+                "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsUcUsUiUlcsilhfdPcPsPlQPl">;
+
+def LD1_X2 : WInst<"vld1_x2", "2c",
+                   "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsQPlUcUsUiUlcsilhfdPcPsPl">;
+def LD3_x3 : WInst<"vld1_x3", "3c",
+                   "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsQPlUcUsUiUlcsilhfdPcPsPl">;
+def LD4_x4 : WInst<"vld1_x4", "4c",
+                   "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsQPlUcUsUiUlcsilhfdPcPsPl">;
+
+def ST1_X2 : WInst<"vst1_x2", "vp2",
+                   "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsQPlUcUsUiUlcsilhfdPcPsPl">;
+def ST1_X3 : WInst<"vst1_x3", "vp3",
+                   "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsQPlUcUsUiUlcsilhfdPcPsPl">;
+def ST1_X4 : WInst<"vst1_x4", "vp4",
+                   "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsQPlUcUsUiUlcsilhfdPcPsPl">;
+
+// With additional QUl, Ql, d, Qd, Pl, QPl type.
+def LD1_LANE : WInst<"vld1_lane", "dcdi",
+                    "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsQPlUcUsUiUlcsilhfdPcPsPl">;
+def LD2_LANE : WInst<"vld2_lane", "2c2i",
+                    "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsQPlUcUsUiUlcsilhfdPcPsPl">;
+def LD3_LANE : WInst<"vld3_lane", "3c3i",
+                    "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsQPlUcUsUiUlcsilhfdPcPsPl">;
+def LD4_LANE : WInst<"vld4_lane", "4c4i",
+                    "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsQPlUcUsUiUlcsilhfdPcPsPl">;
+def ST1_LANE : WInst<"vst1_lane", "vpdi",
+                    "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsQPlUcUsUiUlcsilhfdPcPsPl">;
+def ST2_LANE : WInst<"vst2_lane", "vp2i",
+                    "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsQPlUcUsUiUlcsilhfdPcPsPl">;
+def ST3_LANE : WInst<"vst3_lane", "vp3i",
+                    "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsQPlUcUsUiUlcsilhfdPcPsPl">;
+def ST4_LANE : WInst<"vst4_lane", "vp4i",
+                    "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsQPlUcUsUiUlcsilhfdPcPsPl">;
+
+def LD1_DUP  : WInst<"vld1_dup", "dc",
+                    "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsQPlUcUsUiUlcsilhfdPcPsPl">;
+def LD2_DUP  : WInst<"vld2_dup", "2c",
+                    "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsQPlUcUsUiUlcsilhfdPcPsPl">;
+def LD3_DUP  : WInst<"vld3_dup", "3c",
+                    "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsQPlUcUsUiUlcsilhfdPcPsPl">;
+def LD4_DUP  : WInst<"vld4_dup", "4c",
+                    "QUcQUsQUiQUlQcQsQiQlQhQfQdQPcQPsQPlUcUsUiUlcsilhfdPcPsPl">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Addition
+// With additional d, Qd type.
+def ADD : IOpInst<"vadd", "ddd", "csilfdUcUsUiUlQcQsQiQlQfQUcQUsQUiQUlQd",
+                  OP_ADD>;
+
+////////////////////////////////////////////////////////////////////////////////
+// Subtraction
+// With additional Qd type.
+def SUB : IOpInst<"vsub", "ddd", "csildfUcUsUiUlQcQsQiQlQfQUcQUsQUiQUlQd",
+                  OP_SUB>;
+
+////////////////////////////////////////////////////////////////////////////////
+// Multiplication
+// With additional Qd type.
+def MUL     : IOpInst<"vmul", "ddd", "csifdUcUsUiQcQsQiQfQUcQUsQUiQd", OP_MUL>;
+def MLA     : IOpInst<"vmla", "dddd", "csifdUcUsUiQcQsQiQfQUcQUsQUiQd", OP_MLA>;
+def MLS     : IOpInst<"vmls", "dddd", "csifdUcUsUiQcQsQiQfQUcQUsQUiQd", OP_MLS>;
+
+////////////////////////////////////////////////////////////////////////////////
+// Multiplication Extended
+def MULX : SInst<"vmulx", "ddd", "fdQfQd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Division
+def FDIV : IOpInst<"vdiv", "ddd",  "fdQfQd", OP_DIV>;
+
+////////////////////////////////////////////////////////////////////////////////
+// Vector fused multiply-add operations
+// With additional d, Qd type.
+def FMLA : SInst<"vfma", "dddd", "fdQfQd">;
+def FMLS : SInst<"vfms", "dddd", "fdQfQd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// MUL, FMA, FMS definitions with scalar argument
+def VMUL_N_A64 : IOpInst<"vmul_n", "dds", "Qd", OP_MUL_N>;
+def FMLA_N : SOpInst<"vfma_n", "ddds", "fQf", OP_FMLA_N>;
+def FMLS_N : SOpInst<"vfms_n", "ddds", "fQf", OP_FMLS_N>;
+
+////////////////////////////////////////////////////////////////////////////////
+// Logical operations
+// With additional Qd, Ql, QPl type.
+def BSL : SInst<"vbsl", "dudd",
+                "csilUcUsUiUlfdPcPsQcQsQiQlQUcQUsQUiQUlQfQPcQPsQdPlQPl">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Absolute Difference
+// With additional Qd type.
+def ABD  : SInst<"vabd", "ddd",  "csiUcUsUifdQcQsQiQUcQUsQUiQfQd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// saturating absolute/negate
+// With additional Qd/Ql type.
+def ABS    : SInst<"vabs", "dd", "csilfdQcQsQiQfQlQd">;
+def QABS   : SInst<"vqabs", "dd", "csilQcQsQiQl">;
+def NEG    : SOpInst<"vneg", "dd", "csilfdQcQsQiQfQdQl", OP_NEG>;
+def QNEG   : SInst<"vqneg", "dd", "csilQcQsQiQl">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Signed Saturating Accumulated of Unsigned Value
+def SUQADD : SInst<"vuqadd", "ddd", "csilQcQsQiQl">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Unsigned Saturating Accumulated of Signed Value
+def USQADD : SInst<"vsqadd", "ddd", "UcUsUiUlQUcQUsQUiQUl">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Reciprocal/Sqrt
+// With additional d, Qd type.
+def FRECPS  : IInst<"vrecps", "ddd", "fdQfQd">;
+def FRSQRTS : IInst<"vrsqrts", "ddd", "fdQfQd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// bitwise reverse
+def RBIT : IInst<"vrbit", "dd", "cUcPcQcQUcQPc">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Integer extract and narrow to high
+def XTN2 : SOpInst<"vmovn_high", "qhk", "silUsUiUl", OP_XTN>;
+
+////////////////////////////////////////////////////////////////////////////////
+// Signed integer saturating extract and unsigned narrow to high
+def SQXTUN2 : SOpInst<"vqmovun_high", "qhk", "sil", OP_SQXTUN>;
+
+////////////////////////////////////////////////////////////////////////////////
+// Integer saturating extract and narrow to high
+def QXTN2 : SOpInst<"vqmovn_high", "qhk", "silUsUiUl", OP_QXTN>;
+
+////////////////////////////////////////////////////////////////////////////////
+// Converting vectors
+def VCVT_HIGH_F16 : SOpInst<"vcvt_high_f16", "qhj", "f", OP_VCVT_NA_HI>;
+def VCVT_HIGH_F32_F16 : SOpInst<"vcvt_high_f32", "wk", "h", OP_VCVT_EX_HI>;
+def VCVT_F32_F64 : SInst<"vcvt_f32_f64", "fj", "d">;
+def VCVT_HIGH_F32_F64 : SOpInst<"vcvt_high_f32", "qfj", "d", OP_VCVT_NA_HI>;
+def VCVT_F64_F32 : SInst<"vcvt_f64_f32", "wd", "f">;
+def VCVT_F64 : SInst<"vcvt_f64", "Fd",  "lUlQlQUl">;
+def VCVT_HIGH_F64_F32 : SOpInst<"vcvt_high_f64", "wj", "f", OP_VCVT_EX_HI>;
+def VCVTX_F32_F64 : SInst<"vcvtx_f32", "fj",  "d">;
+def VCVTX_HIGH_F32_F64 : SOpInst<"vcvtx_high_f32", "qfj", "d", OP_VCVTX_HI>;
+def FRINTN : SInst<"vrndn", "dd", "fdQfQd">;
+def FRINTA : SInst<"vrnda", "dd", "fdQfQd">;
+def FRINTP : SInst<"vrndp", "dd", "fdQfQd">;
+def FRINTM : SInst<"vrndm", "dd", "fdQfQd">;
+def FRINTX : SInst<"vrndx", "dd", "fdQfQd">;
+def FRINTZ : SInst<"vrnd", "dd", "fdQfQd">;
+def FRINTI : SInst<"vrndi", "dd", "fdQfQd">;
+def VCVT_S64 : SInst<"vcvt_s64", "xd",  "dQd">;
+def VCVT_U64 : SInst<"vcvt_u64", "ud",  "dQd">;
+def FCVTNS_S32 : SInst<"vcvtn_s32", "xd", "fQf">;
+def FCVTNS_S64 : SInst<"vcvtn_s64", "xd", "dQd">;
+def FCVTNU_S32 : SInst<"vcvtn_u32", "ud", "fQf">;
+def FCVTNU_S64 : SInst<"vcvtn_u64", "ud", "dQd">;
+def FCVTPS_S32 : SInst<"vcvtp_s32", "xd", "fQf">;
+def FCVTPS_S64 : SInst<"vcvtp_s64", "xd", "dQd">;
+def FCVTPU_S32 : SInst<"vcvtp_u32", "ud", "fQf">;
+def FCVTPU_S64 : SInst<"vcvtp_u64", "ud", "dQd">;
+def FCVTMS_S32 : SInst<"vcvtm_s32", "xd", "fQf">;
+def FCVTMS_S64 : SInst<"vcvtm_s64", "xd", "dQd">;
+def FCVTMU_S32 : SInst<"vcvtm_u32", "ud", "fQf">;
+def FCVTMU_S64 : SInst<"vcvtm_u64", "ud", "dQd">;
+def FCVTAS_S32 : SInst<"vcvta_s32", "xd", "fQf">;
+def FCVTAS_S64 : SInst<"vcvta_s64", "xd", "dQd">;
+def FCVTAU_S32 : SInst<"vcvta_u32", "ud", "fQf">;
+def FCVTAU_S64 : SInst<"vcvta_u64", "ud", "dQd">;
+def FRECPE  : SInst<"vrecpe", "dd", "fdUiQfQUiQd">;
+def FRSQRTE : SInst<"vrsqrte", "dd", "fdUiQfQUiQd">;
+def FSQRT   : SInst<"vsqrt", "dd", "fdQfQd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Comparison
+// With additional Qd, Ql, QPl type.
+def FCAGE : IInst<"vcage", "udd", "fdQfQd">;
+def FCAGT : IInst<"vcagt", "udd", "fdQfQd">;
+def FCALE : IInst<"vcale", "udd", "fdQfQd">;
+def FCALT : IInst<"vcalt", "udd", "fdQfQd">;
+// With additional Ql, QUl, Qd types.
+def CMTST  : WInst<"vtst", "udd",
+                   "csiUcUsUiPcPsQcQsQiQUcQUsQUiQPcQPslUlQlQUlPlQPl">;
+// With additional l, Ul,d, Qd, Ql, QUl, Qd types.
+def CFMEQ  : SOpInst<"vceq", "udd",
+                     "csilfUcUsUiUlPcQcdQdQsQiQfQUcQUsQUiQUlQlQPcPlQPl", OP_EQ>;
+def CFMGE  : SOpInst<"vcge", "udd",
+                     "csilfUcUsUiUlQcQsQiQlQfQUcQUsQUiQUldQd", OP_GE>;
+def CFMLE  : SOpInst<"vcle", "udd",
+                     "csilfUcUsUiUlQcQsQiQlQfQUcQUsQUiQUldQd", OP_LE>;
+def CFMGT  : SOpInst<"vcgt", "udd",
+                     "csilfUcUsUiUlQcQsQiQlQfQUcQUsQUiQUldQd", OP_GT>;
+def CFMLT  : SOpInst<"vclt", "udd",
+                     "csilfUcUsUiUlQcQsQiQlQfQUcQUsQUiQUldQd", OP_LT>;
+
+def CMEQ  : SInst<"vceqz", "ud",
+                  "csilfUcUsUiUlPcPsPlQcQsQiQlQfQUcQUsQUiQUlQPcQPsdQdQPl">;
+def CMGE  : SInst<"vcgez", "ud", "csilfdQcQsQiQlQfQd">;
+def CMLE  : SInst<"vclez", "ud", "csilfdQcQsQiQlQfQd">;
+def CMGT  : SInst<"vcgtz", "ud", "csilfdQcQsQiQlQfQd">;
+def CMLT  : SInst<"vcltz", "ud", "csilfdQcQsQiQlQfQd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Max/Min Integer
+// With additional Qd type.
+def MAX : SInst<"vmax", "ddd", "csiUcUsUifdQcQsQiQUcQUsQUiQfQd">;
+def MIN : SInst<"vmin", "ddd", "csiUcUsUifdQcQsQiQUcQUsQUiQfQd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// MaxNum/MinNum Floating Point
+def FMAXNM : SInst<"vmaxnm", "ddd", "fdQfQd">;
+def FMINNM : SInst<"vminnm", "ddd", "fdQfQd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Pairwise Max/Min
+// With additional Qc Qs Qi QUc QUs QUi Qf Qd types.
+def MAXP : SInst<"vpmax", "ddd", "csiUcUsUifQcQsQiQUcQUsQUiQfQd">;
+def MINP : SInst<"vpmin", "ddd", "csiUcUsUifQcQsQiQUcQUsQUiQfQd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Pairwise MaxNum/MinNum Floating Point
+def FMAXNMP : SInst<"vpmaxnm", "ddd", "fQfQd">;
+def FMINNMP : SInst<"vpminnm", "ddd", "fQfQd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Pairwise Addition
+// With additional Qc Qs Qi QUc QUs QUi Qf Qd types.
+def ADDP  : IInst<"vpadd", "ddd", "csiUcUsUifQcQsQiQlQUcQUsQUiQUlQfQd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Shifts by constant
+let isShift = 1 in {
+// Left shift long high
+def SHLL_HIGH_N    : SOpInst<"vshll_high_n", "ndi", "HcHsHiHUcHUsHUi",
+                             OP_LONG_HI>;
+
+////////////////////////////////////////////////////////////////////////////////
+// Shifts with insert, with additional Ql, QPl type.
+def SRI_N : WInst<"vsri_n", "dddi",
+                  "csilUcUsUiUlPcPsQcQsQiQlQUcQUsQUiQUlQPcQPsPlQPl">;
+def SLI_N : WInst<"vsli_n", "dddi",
+                  "csilUcUsUiUlPcPsQcQsQiQlQUcQUsQUiQUlQPcQPsPlQPl">;
+
+// Right shift narrow high
+def SHRN_HIGH_N    : IOpInst<"vshrn_high_n", "hmdi",
+                             "HsHiHlHUsHUiHUl", OP_NARROW_HI>;
+def QSHRUN_HIGH_N  : SOpInst<"vqshrun_high_n", "hmdi",
+                             "HsHiHl", OP_NARROW_HI>;
+def RSHRN_HIGH_N   : IOpInst<"vrshrn_high_n", "hmdi",
+                             "HsHiHlHUsHUiHUl", OP_NARROW_HI>;
+def QRSHRUN_HIGH_N : SOpInst<"vqrshrun_high_n", "hmdi",
+                             "HsHiHl", OP_NARROW_HI>;
+def QSHRN_HIGH_N   : SOpInst<"vqshrn_high_n", "hmdi", 
+                             "HsHiHlHUsHUiHUl", OP_NARROW_HI>;
+def QRSHRN_HIGH_N  : SOpInst<"vqrshrn_high_n", "hmdi", 
+                             "HsHiHlHUsHUiHUl", OP_NARROW_HI>;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// Converting vectors
+def VMOVL_HIGH   : SOpInst<"vmovl_high", "nd", "HcHsHiHUcHUsHUi", OP_MOVL_HI>;
+
+let isVCVT_N = 1 in {
+def CVTF_N_F64   : SInst<"vcvt_n_f64", "Fdi", "lUlQlQUl">;
+def FCVTZS_N_S64 : SInst<"vcvt_n_s64", "xdi", "dQd">;
+def FCVTZS_N_U64 : SInst<"vcvt_n_u64", "udi", "dQd">;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// 3VDiff class using high 64-bit in operands
+def VADDL_HIGH   : SOpInst<"vaddl_high", "wkk", "csiUcUsUi", OP_ADDLHi>;
+def VADDW_HIGH   : SOpInst<"vaddw_high", "wwk", "csiUcUsUi", OP_ADDWHi>;
+def VSUBL_HIGH   : SOpInst<"vsubl_high", "wkk", "csiUcUsUi", OP_SUBLHi>;
+def VSUBW_HIGH   : SOpInst<"vsubw_high", "wwk", "csiUcUsUi", OP_SUBWHi>;
+
+def VABDL_HIGH   : SOpInst<"vabdl_high", "wkk",  "csiUcUsUi", OP_ABDLHi>;
+def VABAL_HIGH   : SOpInst<"vabal_high", "wwkk", "csiUcUsUi", OP_ABALHi>;
+
+def VMULL_HIGH   : SOpInst<"vmull_high", "wkk", "csiUcUsUiPc", OP_MULLHi>;
+def VMULL_HIGH_N : SOpInst<"vmull_high_n", "wks", "siUsUi", OP_MULLHi_N>;
+def VMLAL_HIGH   : SOpInst<"vmlal_high", "wwkk", "csiUcUsUi", OP_MLALHi>;
+def VMLAL_HIGH_N : SOpInst<"vmlal_high_n", "wwks", "siUsUi", OP_MLALHi_N>;
+def VMLSL_HIGH   : SOpInst<"vmlsl_high", "wwkk", "csiUcUsUi", OP_MLSLHi>;
+def VMLSL_HIGH_N : SOpInst<"vmlsl_high_n", "wwks", "siUsUi", OP_MLSLHi_N>;
+
+def VADDHN_HIGH  : SOpInst<"vaddhn_high", "qhkk", "silUsUiUl", OP_ADDHNHi>;
+def VRADDHN_HIGH : SOpInst<"vraddhn_high", "qhkk", "silUsUiUl", OP_RADDHNHi>;
+def VSUBHN_HIGH  : SOpInst<"vsubhn_high", "qhkk", "silUsUiUl", OP_SUBHNHi>;
+def VRSUBHN_HIGH : SOpInst<"vrsubhn_high", "qhkk", "silUsUiUl", OP_RSUBHNHi>;
+
+def VQDMULL_HIGH : SOpInst<"vqdmull_high", "wkk", "si", OP_QDMULLHi>;
+def VQDMULL_HIGH_N : SOpInst<"vqdmull_high_n", "wks", "si", OP_QDMULLHi_N>;
+def VQDMLAL_HIGH : SOpInst<"vqdmlal_high", "wwkk", "si", OP_QDMLALHi>;
+def VQDMLAL_HIGH_N : SOpInst<"vqdmlal_high_n", "wwks", "si", OP_QDMLALHi_N>;
+def VQDMLSL_HIGH : SOpInst<"vqdmlsl_high", "wwkk", "si", OP_QDMLSLHi>;
+def VQDMLSL_HIGH_N : SOpInst<"vqdmlsl_high_n", "wwks", "si", OP_QDMLSLHi_N>;
+
+////////////////////////////////////////////////////////////////////////////////
+// Extract or insert element from vector
+def GET_LANE : IInst<"vget_lane", "sdi",
+                     "csilPcPsUcUsUiUlQcQsQiQlQUcQUsQUiQUlPcPsQPcQPsfdQfQdPlQPl">;
+def SET_LANE : IInst<"vset_lane", "dsdi",
+                     "csilPcPsUcUsUiUlQcQsQiQlQUcQUsQUiQUlPcPsQPcQPsfdQfQdPlQPl">;
+def COPY_LANE : IOpInst<"vcopy_lane", "ddidi",
+                        "csilPcPsUcUsUiUlPcPsPlfd", OP_COPY_LN>;
+def COPYQ_LANE : IOpInst<"vcopy_lane", "ddigi",
+                        "QcQsQiQlQUcQUsQUiQUlQPcQPsQfQdQPl", OP_COPYQ_LN>;
+def COPY_LANEQ : IOpInst<"vcopy_laneq", "ddiki",
+                     "csilPcPsPlUcUsUiUlfd", OP_COPY_LNQ>;
+def COPYQ_LANEQ : IOpInst<"vcopy_laneq", "ddidi",
+                     "QcQsQiQlQUcQUsQUiQUlQPcQPsQfQdQPl", OP_COPY_LN>;
+
+////////////////////////////////////////////////////////////////////////////////
+// Set all lanes to same value
+def VDUP_LANE1: WOpInst<"vdup_lane", "dgi",
+                  "csilPcPsUcUsUiUlhfdQcQsQiQlQPcQPsQUcQUsQUiQUlQhQfQdPlQPl",
+                        OP_DUP_LN>;
+def VDUP_LANE2: WOpInst<"vdup_laneq", "dki",
+                  "csilPcPsUcUsUiUlhfdQcQsQiQlQPcQPsQUcQUsQUiQUlQhQfQdPlQPl",
+                        OP_DUP_LN>;
+def DUP_N   : WOpInst<"vdup_n", "ds",
+                       "UcUsUicsiPcPsfQUcQUsQUiQcQsQiQPcQPsQflUlQlQUldQdPlQPl",
+                       OP_DUP>;
+def MOV_N   : WOpInst<"vmov_n", "ds",
+                       "UcUsUicsiPcPsfQUcQUsQUiQcQsQiQPcQPsQflUlQlQUldQd",
+                       OP_DUP>;
+
+////////////////////////////////////////////////////////////////////////////////
+// Combining vectors, with additional Pl
+def COMBINE : NoTestOpInst<"vcombine", "kdd", "csilhfdUcUsUiUlPcPsPl", OP_CONC>;
+
+////////////////////////////////////////////////////////////////////////////////
+//Initialize a vector from bit pattern, with additional Pl
+def CREATE : NoTestOpInst<"vcreate", "dl", "csihfdUcUsUiUlPcPslPl", OP_CAST>;
+
+////////////////////////////////////////////////////////////////////////////////
+
+def VMLA_LANEQ   : IOpInst<"vmla_laneq", "dddji",
+                           "siUsUifQsQiQUsQUiQf", OP_MLA_LN>;
+def VMLS_LANEQ   : IOpInst<"vmls_laneq", "dddji",
+                           "siUsUifQsQiQUsQUiQf", OP_MLS_LN>;
+
+def VFMA_LANE    : IInst<"vfma_lane", "dddgi", "fdQfQd">;
+def VFMA_LANEQ   : IInst<"vfma_laneq", "dddji", "fdQfQd">;
+def VFMS_LANE    : IOpInst<"vfms_lane", "dddgi", "fdQfQd", OP_FMS_LN>;
+def VFMS_LANEQ   : IOpInst<"vfms_laneq", "dddji", "fdQfQd", OP_FMS_LNQ>;
+
+def VMLAL_LANEQ  : SOpInst<"vmlal_laneq", "wwdki", "siUsUi", OP_MLAL_LN>;
+def VMLAL_HIGH_LANE   : SOpInst<"vmlal_high_lane", "wwkdi", "siUsUi",
+                                OP_MLALHi_LN>;
+def VMLAL_HIGH_LANEQ  : SOpInst<"vmlal_high_laneq", "wwkki", "siUsUi",
+                                OP_MLALHi_LN>;
+def VMLSL_LANEQ  : SOpInst<"vmlsl_laneq", "wwdki", "siUsUi", OP_MLSL_LN>;
+def VMLSL_HIGH_LANE   : SOpInst<"vmlsl_high_lane", "wwkdi", "siUsUi",
+                                OP_MLSLHi_LN>;
+def VMLSL_HIGH_LANEQ  : SOpInst<"vmlsl_high_laneq", "wwkki", "siUsUi",
+                                OP_MLSLHi_LN>;
+
+def VQDMLAL_LANEQ  : SOpInst<"vqdmlal_laneq", "wwdki", "si", OP_QDMLAL_LN>;
+def VQDMLAL_HIGH_LANE   : SOpInst<"vqdmlal_high_lane", "wwkdi", "si",
+                                OP_QDMLALHi_LN>;
+def VQDMLAL_HIGH_LANEQ  : SOpInst<"vqdmlal_high_laneq", "wwkki", "si",
+                                OP_QDMLALHi_LN>;
+def VQDMLSL_LANEQ  : SOpInst<"vqdmlsl_laneq", "wwdki", "si", OP_QDMLSL_LN>;
+def VQDMLSL_HIGH_LANE   : SOpInst<"vqdmlsl_high_lane", "wwkdi", "si",
+                                OP_QDMLSLHi_LN>;
+def VQDMLSL_HIGH_LANEQ  : SOpInst<"vqdmlsl_high_laneq", "wwkki", "si",
+                                OP_QDMLSLHi_LN>;
+
+// Newly add double parameter for vmul_lane in aarch64
+// Note: d type is handled by SCALAR_VMUL_LANE
+def VMUL_LANE_A64 : IOpInst<"vmul_lane", "ddgi", "Qd", OP_MUL_LN>;
+
+// Note: d type is handled by SCALAR_VMUL_LANEQ
+def VMUL_LANEQ   : IOpInst<"vmul_laneq", "ddji",
+                           "sifUsUiQsQiQfQUsQUiQfQd", OP_MUL_LN>;
+def VMULL_LANEQ  : SOpInst<"vmull_laneq", "wdki", "siUsUi", OP_MULL_LN>;
+def VMULL_HIGH_LANE   : SOpInst<"vmull_high_lane", "wkdi", "siUsUi",
+                                OP_MULLHi_LN>;
+def VMULL_HIGH_LANEQ  : SOpInst<"vmull_high_laneq", "wkki", "siUsUi",
+                                OP_MULLHi_LN>;
+
+def VQDMULL_LANEQ  : SOpInst<"vqdmull_laneq", "wdki", "si", OP_QDMULL_LN>;
+def VQDMULL_HIGH_LANE   : SOpInst<"vqdmull_high_lane", "wkdi", "si",
+                                  OP_QDMULLHi_LN>;
+def VQDMULL_HIGH_LANEQ  : SOpInst<"vqdmull_high_laneq", "wkki", "si",
+                                  OP_QDMULLHi_LN>;
+
+def VQDMULH_LANEQ  : SOpInst<"vqdmulh_laneq", "ddji", "siQsQi", OP_QDMULH_LN>;
+def VQRDMULH_LANEQ : SOpInst<"vqrdmulh_laneq", "ddji", "siQsQi", OP_QRDMULH_LN>;
+
+// Note: d type implemented by SCALAR_VMULX_LANE
+def VMULX_LANE : IOpInst<"vmulx_lane", "ddgi", "fQfQd", OP_MULX_LN>;
+// Note: d type is implemented by SCALAR_VMULX_LANEQ
+def VMULX_LANEQ : IOpInst<"vmulx_laneq", "ddji", "fQfQd", OP_MULX_LN>;
+
+////////////////////////////////////////////////////////////////////////////////
+// Across vectors class
+def VADDLV  : SInst<"vaddlv", "rd", "csiUcUsUiQcQsQiQUcQUsQUi">;
+def VMAXV   : SInst<"vmaxv", "sd", "csifUcUsUiQcQsQiQUcQUsQUiQfQd">;
+def VMINV   : SInst<"vminv", "sd", "csifUcUsUiQcQsQiQUcQUsQUiQfQd">;
+def VADDV   : SInst<"vaddv", "sd", "csifUcUsUiQcQsQiQUcQUsQUiQfQdQlQUl">;
+def FMAXNMV : SInst<"vmaxnmv", "sd", "fQfQd">;
+def FMINNMV : SInst<"vminnmv", "sd", "fQfQd">;
+ 
+////////////////////////////////////////////////////////////////////////////////
+// Newly added Vector Extract for f64
+def VEXT_A64 : WInst<"vext", "dddi",
+                     "cUcPcsUsPsiUilUlfdQcQUcQPcQsQUsQPsQiQUiQlQUlQfQdPlQPl">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Crypto
+let isCrypto = 1 in {
+def AESE : SInst<"vaese", "ddd", "QUc">;
+def AESD : SInst<"vaesd", "ddd", "QUc">;
+def AESMC : SInst<"vaesmc", "dd", "QUc">;
+def AESIMC : SInst<"vaesimc", "dd", "QUc">;
+
+def SHA1H : SInst<"vsha1h", "ss", "Ui">;
+def SHA1SU1 : SInst<"vsha1su1", "ddd", "QUi">;
+def SHA256SU0 : SInst<"vsha256su0", "ddd", "QUi">;
+
+def SHA1C : SInst<"vsha1c", "ddsd", "QUi">;
+def SHA1P : SInst<"vsha1p", "ddsd", "QUi">;
+def SHA1M : SInst<"vsha1m", "ddsd", "QUi">;
+def SHA1SU0 : SInst<"vsha1su0", "dddd", "QUi">;
+def SHA256H : SInst<"vsha256h", "dddd", "QUi">;
+def SHA256H2 : SInst<"vsha256h2", "dddd", "QUi">;
+def SHA256SU1 : SInst<"vsha256su1", "dddd", "QUi">;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// Permutation
+def VTRN1 : SOpInst<"vtrn1", "ddd",
+                    "csiUcUsUifPcPsQcQsQiQlQUcQUsQUiQUlQfQdQPcQPsQPl", OP_TRN1>;
+def VZIP1 : SOpInst<"vzip1", "ddd",
+                    "csiUcUsUifPcPsQcQsQiQlQUcQUsQUiQUlQfQdQPcQPsQPl", OP_ZIP1>;
+def VUZP1 : SOpInst<"vuzp1", "ddd",
+                    "csiUcUsUifPcPsQcQsQiQlQUcQUsQUiQUlQfQdQPcQPsQPl", OP_UZP1>;
+def VTRN2 : SOpInst<"vtrn2", "ddd",
+                    "csiUcUsUifPcPsQcQsQiQlQUcQUsQUiQUlQfQdQPcQPsQPl", OP_TRN2>;
+def VZIP2 : SOpInst<"vzip2", "ddd",
+                    "csiUcUsUifPcPsQcQsQiQlQUcQUsQUiQUlQfQdQPcQPsQPl", OP_ZIP2>;
+def VUZP2 : SOpInst<"vuzp2", "ddd",
+                    "csiUcUsUifPcPsQcQsQiQlQUcQUsQUiQUlQfQdQPcQPsQPl", OP_UZP2>;
+
+////////////////////////////////////////////////////////////////////////////////
+// Table lookup
+let InstName = "vtbl" in {
+def VQTBL1_A64 : WInst<"vqtbl1", "djt",  "UccPcQUcQcQPc">;
+def VQTBL2_A64 : WInst<"vqtbl2", "dBt",  "UccPcQUcQcQPc">;
+def VQTBL3_A64 : WInst<"vqtbl3", "dCt",  "UccPcQUcQcQPc">;
+def VQTBL4_A64 : WInst<"vqtbl4", "dDt",  "UccPcQUcQcQPc">;
+}
+let InstName = "vtbx" in {
+def VQTBX1_A64 : WInst<"vqtbx1", "ddjt", "UccPcQUcQcQPc">;
+def VQTBX2_A64 : WInst<"vqtbx2", "ddBt", "UccPcQUcQcQPc">;
+def VQTBX3_A64 : WInst<"vqtbx3", "ddCt", "UccPcQUcQcQPc">;
+def VQTBX4_A64 : WInst<"vqtbx4", "ddDt", "UccPcQUcQcQPc">;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// Vector reinterpret cast operations
+// With additional d, Qd, pl, Qpl types
+def REINTERPRET
+  : NoTestOpInst<"vreinterpret", "dd",
+         "csilUcUsUiUlhfdPcPsPlQcQsQiQlQUcQUsQUiQUlQhQfQdQPcQPsQPl", OP_REINT>;
+
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Intrinsics
+// Scalar Arithmetic
+
+// Scalar Addition
+def SCALAR_ADD : SInst<"vadd", "sss",  "SlSUl">;
+// Scalar  Saturating Add
+def SCALAR_QADD   : SInst<"vqadd", "sss", "ScSsSiSlSUcSUsSUiSUl">;
+
+// Scalar Subtraction
+def SCALAR_SUB : SInst<"vsub", "sss",  "SlSUl">;
+// Scalar  Saturating Sub
+def SCALAR_QSUB   : SInst<"vqsub", "sss", "ScSsSiSlSUcSUsSUiSUl">;
+
+let InstName = "vmov" in {
+def VGET_HIGH_A64 : NoTestOpInst<"vget_high", "dk", "csilhfdUcUsUiUlPcPsPl",
+                                 OP_HI>;
+def VGET_LOW_A64  : NoTestOpInst<"vget_low", "dk", "csilhfdUcUsUiUlPcPsPl",
+                                 OP_LO>;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Shift
+// Scalar Shift Left
+def SCALAR_SHL: SInst<"vshl", "sss", "SlSUl">;
+// Scalar Saturating Shift Left
+def SCALAR_QSHL: SInst<"vqshl", "sss", "ScSsSiSlSUcSUsSUiSUl">;
+// Scalar Saturating Rounding Shift Left
+def SCALAR_QRSHL: SInst<"vqrshl", "sss", "ScSsSiSlSUcSUsSUiSUl">;
+// Scalar Shift Rouding Left
+def SCALAR_RSHL: SInst<"vrshl", "sss", "SlSUl">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Shift (Immediate)
+let isScalarShift = 1 in {
+// Signed/Unsigned Shift Right (Immediate)
+def SCALAR_SSHR_N: SInst<"vshr_n", "ssi", "SlSUl">;
+// Signed/Unsigned Rounding Shift Right (Immediate)
+def SCALAR_SRSHR_N: SInst<"vrshr_n", "ssi", "SlSUl">;
+
+// Signed/Unsigned Shift Right and Accumulate (Immediate)
+def SCALAR_SSRA_N: SInst<"vsra_n", "sssi", "SlSUl">;
+// Signed/Unsigned Rounding Shift Right and Accumulate (Immediate)
+def SCALAR_SRSRA_N: SInst<"vrsra_n", "sssi", "SlSUl">;
+
+// Shift Left (Immediate)
+def SCALAR_SHL_N: SInst<"vshl_n", "ssi", "SlSUl">;
+// Signed/Unsigned Saturating Shift Left (Immediate)
+def SCALAR_SQSHL_N: SInst<"vqshl_n", "ssi", "ScSsSiSlSUcSUsSUiSUl">;
+// Signed Saturating Shift Left Unsigned (Immediate)
+def SCALAR_SQSHLU_N: SInst<"vqshlu_n", "ssi", "ScSsSiSl">;
+
+// Shift Right And Insert (Immediate)
+def SCALAR_SRI_N: SInst<"vsri_n", "sssi", "SlSUl">;
+// Shift Left And Insert (Immediate)
+def SCALAR_SLI_N: SInst<"vsli_n", "sssi", "SlSUl">;
+
+let isScalarNarrowShift = 1 in {
+  // Signed/Unsigned Saturating Shift Right Narrow (Immediate)
+  def SCALAR_SQSHRN_N: SInst<"vqshrn_n", "zsi", "SsSiSlSUsSUiSUl">;
+  // Signed/Unsigned Saturating Rounded Shift Right Narrow (Immediate)
+  def SCALAR_SQRSHRN_N: SInst<"vqrshrn_n", "zsi", "SsSiSlSUsSUiSUl">;
+  // Signed Saturating Shift Right Unsigned Narrow (Immediate)
+  def SCALAR_SQSHRUN_N: SInst<"vqshrun_n", "zsi", "SsSiSl">;
+  // Signed Saturating Rounded Shift Right Unsigned Narrow (Immediate)
+  def SCALAR_SQRSHRUN_N: SInst<"vqrshrun_n", "zsi", "SsSiSl">;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Signed/Unsigned Fixed-point Convert To Floating-Point (Immediate)
+def SCALAR_SCVTF_N_F32: SInst<"vcvt_n_f32", "ysi", "SiSUi">;
+def SCALAR_SCVTF_N_F64: SInst<"vcvt_n_f64", "osi", "SlSUl">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Floating-point Convert To Signed/Unsigned Fixed-point (Immediate)
+def SCALAR_FCVTZS_N_S32 : SInst<"vcvt_n_s32", "$si", "Sf">;
+def SCALAR_FCVTZU_N_U32 : SInst<"vcvt_n_u32", "bsi", "Sf">;
+def SCALAR_FCVTZS_N_S64 : SInst<"vcvt_n_s64", "$si", "Sd">;
+def SCALAR_FCVTZU_N_U64 : SInst<"vcvt_n_u64", "bsi", "Sd">;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Reduce Pairwise Addition (Scalar and Floating Point)
+def SCALAR_ADDP  : SInst<"vpadd", "sd", "SfSHlSHdSHUl">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Reduce Floating Point Pairwise Max/Min
+def SCALAR_FMAXP : SInst<"vpmax", "sd", "SfSQd">;
+
+def SCALAR_FMINP : SInst<"vpmin", "sd", "SfSQd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Reduce Floating Point Pairwise maxNum/minNum
+def SCALAR_FMAXNMP : SInst<"vpmaxnm", "sd", "SfSQd">;
+def SCALAR_FMINNMP : SInst<"vpminnm", "sd", "SfSQd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Integer Saturating Doubling Multiply Half High
+def SCALAR_SQDMULH : SInst<"vqdmulh", "sss", "SsSi">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Integer Saturating Rounding Doubling Multiply Half High
+def SCALAR_SQRDMULH : SInst<"vqrdmulh", "sss", "SsSi">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Floating-point Multiply Extended
+def SCALAR_FMULX : IInst<"vmulx", "sss", "SfSd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Floating-point Reciprocal Step
+def SCALAR_FRECPS : IInst<"vrecps", "sss", "SfSd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Floating-point Reciprocal Square Root Step
+def SCALAR_FRSQRTS : IInst<"vrsqrts", "sss", "SfSd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Signed Integer Convert To Floating-point
+def SCALAR_SCVTFS : SInst<"vcvt_f32", "ys", "Si">;
+def SCALAR_SCVTFD : SInst<"vcvt_f64", "os", "Sl">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Unsigned Integer Convert To Floating-point
+def SCALAR_UCVTFS : SInst<"vcvt_f32", "ys", "SUi">;
+def SCALAR_UCVTFD : SInst<"vcvt_f64", "os", "SUl">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Floating-point Converts
+def SCALAR_FCVTXN  : IInst<"vcvtx_f32", "ys", "Sd">;
+def SCALAR_FCVTNSS : SInst<"vcvtn_s32", "$s", "Sf">;
+def SCALAR_FCVTNUS : SInst<"vcvtn_u32", "bs", "Sf">;
+def SCALAR_FCVTNSD : SInst<"vcvtn_s64", "$s", "Sd">;
+def SCALAR_FCVTNUD : SInst<"vcvtn_u64", "bs", "Sd">;
+def SCALAR_FCVTMSS : SInst<"vcvtm_s32", "$s", "Sf">;
+def SCALAR_FCVTMUS : SInst<"vcvtm_u32", "bs", "Sf">;
+def SCALAR_FCVTMSD : SInst<"vcvtm_s64", "$s", "Sd">;
+def SCALAR_FCVTMUD : SInst<"vcvtm_u64", "bs", "Sd">;
+def SCALAR_FCVTASS : SInst<"vcvta_s32", "$s", "Sf">;
+def SCALAR_FCVTAUS : SInst<"vcvta_u32", "bs", "Sf">;
+def SCALAR_FCVTASD : SInst<"vcvta_s64", "$s", "Sd">;
+def SCALAR_FCVTAUD : SInst<"vcvta_u64", "bs", "Sd">;
+def SCALAR_FCVTPSS : SInst<"vcvtp_s32", "$s", "Sf">;
+def SCALAR_FCVTPUS : SInst<"vcvtp_u32", "bs", "Sf">;
+def SCALAR_FCVTPSD : SInst<"vcvtp_s64", "$s", "Sd">;
+def SCALAR_FCVTPUD : SInst<"vcvtp_u64", "bs", "Sd">;
+def SCALAR_FCVTZSS : SInst<"vcvt_s32", "$s", "Sf">;
+def SCALAR_FCVTZUS : SInst<"vcvt_u32", "bs", "Sf">;
+def SCALAR_FCVTZSD : SInst<"vcvt_s64", "$s", "Sd">;
+def SCALAR_FCVTZUD : SInst<"vcvt_u64", "bs", "Sd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Floating-point Reciprocal Estimate
+def SCALAR_FRECPE : IInst<"vrecpe", "ss", "SfSd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Floating-point Reciprocal Exponent
+def SCALAR_FRECPX : IInst<"vrecpx", "ss", "SfSd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Floating-point Reciprocal Square Root Estimate
+def SCALAR_FRSQRTE : IInst<"vrsqrte", "ss", "SfSd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Integer Comparison
+def SCALAR_CMEQ : SInst<"vceq", "sss", "SlSUl">;
+def SCALAR_CMEQZ : SInst<"vceqz", "ss", "SlSUl">;
+def SCALAR_CMGE : SInst<"vcge", "sss", "Sl">;
+def SCALAR_CMGEZ : SInst<"vcgez", "ss", "Sl">;
+def SCALAR_CMHS : SInst<"vcge", "sss", "SUl">;
+def SCALAR_CMLE : SInst<"vcle", "sss", "SlSUl">;
+def SCALAR_CMLEZ : SInst<"vclez", "ss", "Sl">;
+def SCALAR_CMLT : SInst<"vclt", "sss", "SlSUl">;
+def SCALAR_CMLTZ : SInst<"vcltz", "ss", "Sl">;
+def SCALAR_CMGT : SInst<"vcgt", "sss", "Sl">;
+def SCALAR_CMGTZ : SInst<"vcgtz", "ss", "Sl">;
+def SCALAR_CMHI : SInst<"vcgt", "sss", "SUl">;
+def SCALAR_CMTST : SInst<"vtst", "sss", "SlSUl">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Floating-point Comparison
+def SCALAR_FCMEQ : IInst<"vceq", "bss", "SfSd">;
+def SCALAR_FCMEQZ : IInst<"vceqz", "bs", "SfSd">;
+def SCALAR_FCMGE : IInst<"vcge", "bss", "SfSd">;
+def SCALAR_FCMGEZ : IInst<"vcgez", "bs", "SfSd">;
+def SCALAR_FCMGT : IInst<"vcgt", "bss", "SfSd">;
+def SCALAR_FCMGTZ : IInst<"vcgtz", "bs", "SfSd">;
+def SCALAR_FCMLE : IInst<"vcle", "bss", "SfSd">;
+def SCALAR_FCMLEZ : IInst<"vclez", "bs", "SfSd">;
+def SCALAR_FCMLT : IInst<"vclt", "bss", "SfSd">;
+def SCALAR_FCMLTZ : IInst<"vcltz", "bs", "SfSd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Floating-point Absolute Compare Mask Greater Than Or Equal
+def SCALAR_FACGE : IInst<"vcage", "bss", "SfSd">;
+def SCALAR_FACLE : IInst<"vcale", "bss", "SfSd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Floating-point Absolute Compare Mask Greater Than
+def SCALAR_FACGT : IInst<"vcagt", "bss", "SfSd">;
+def SCALAR_FACLT : IInst<"vcalt", "bss", "SfSd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Absolute Value
+def SCALAR_ABS : SInst<"vabs", "ss", "Sl">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Absolute Difference
+def SCALAR_ABD : IInst<"vabd", "sss", "SfSd">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Signed Saturating Absolute Value
+def SCALAR_SQABS : SInst<"vqabs", "ss", "ScSsSiSl">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Negate
+def SCALAR_NEG : SInst<"vneg", "ss", "Sl">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Signed Saturating Negate
+def SCALAR_SQNEG : SInst<"vqneg", "ss", "ScSsSiSl">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Signed Saturating Accumulated of Unsigned Value
+def SCALAR_SUQADD : SInst<"vuqadd", "sss", "ScSsSiSl">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Unsigned Saturating Accumulated of Signed Value
+def SCALAR_USQADD : SInst<"vsqadd", "sss", "SUcSUsSUiSUl">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Signed Saturating Doubling Multiply-Add Long
+def SCALAR_SQDMLAL : SInst<"vqdmlal", "rrss", "SsSi">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Signed Saturating Doubling Multiply-Subtract Long
+def SCALAR_SQDMLSL : SInst<"vqdmlsl", "rrss", "SsSi">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Signed Saturating Doubling Multiply Long
+def SCALAR_SQDMULL : SInst<"vqdmull", "rss", "SsSi">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Signed Saturating Extract Unsigned Narrow
+def SCALAR_SQXTUN : SInst<"vqmovun", "zs", "SsSiSl">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Signed Saturating Extract Narrow
+def SCALAR_SQXTN : SInst<"vqmovn", "zs", "SsSiSl">;
+
+////////////////////////////////////////////////////////////////////////////////
+// Scalar Unsigned Saturating Extract Narrow
+def SCALAR_UQXTN : SInst<"vqmovn", "zs", "SUsSUiSUl">;
+
+// Scalar Floating Point  multiply (scalar, by element)
+def SCALAR_FMUL_LANE : IOpInst<"vmul_lane", "ssdi", "SfSd", OP_SCALAR_MUL_LN>;
+def SCALAR_FMUL_LANEQ : IOpInst<"vmul_laneq", "ssji", "SfSd", OP_SCALAR_MUL_LNQ>;
+
+// Scalar Floating Point  multiply extended (scalar, by element)
+def SCALAR_FMULX_LANE : IOpInst<"vmulx_lane", "ssdi", "SfSd", OP_SCALAR_MULX_LN>;
+def SCALAR_FMULX_LANEQ : IOpInst<"vmulx_laneq", "ssji", "SfSd", OP_SCALAR_MULX_LNQ>;
+
+def SCALAR_VMUL_N : IInst<"vmul_n", "dds", "d">;
+
+// VMUL_LANE_A64 d type implemented using scalar mul lane
+def SCALAR_VMUL_LANE : IInst<"vmul_lane", "ddgi", "d">;
+
+// VMUL_LANEQ d type implemented using scalar mul lane
+def SCALAR_VMUL_LANEQ   : IInst<"vmul_laneq", "ddji", "d">;
+
+// VMULX_LANE d type implemented using scalar vmulx_lane
+def SCALAR_VMULX_LANE : IOpInst<"vmulx_lane", "ddgi", "d", OP_SCALAR_VMULX_LN>;
+
+// VMULX_LANEQ d type implemented using scalar vmulx_laneq
+def SCALAR_VMULX_LANEQ : IOpInst<"vmulx_laneq", "ddji", "d", OP_SCALAR_VMULX_LNQ>;
+
+// Scalar Floating Point fused multiply-add (scalar, by element)
+def SCALAR_FMLA_LANE : IInst<"vfma_lane", "sssdi", "SfSd">;
+def SCALAR_FMLA_LANEQ : IInst<"vfma_laneq", "sssji", "SfSd">;
+
+// Scalar Floating Point fused multiply-subtract (scalar, by element)
+def SCALAR_FMLS_LANE : IOpInst<"vfms_lane", "sssdi", "SfSd", OP_FMS_LN>;
+def SCALAR_FMLS_LANEQ : IOpInst<"vfms_laneq", "sssji", "SfSd", OP_FMS_LNQ>;
+
+// Signed Saturating Doubling Multiply Long (scalar by element)
+def SCALAR_SQDMULL_LANE : SOpInst<"vqdmull_lane", "rsdi", "SsSi", OP_SCALAR_QDMULL_LN>;
+def SCALAR_SQDMULL_LANEQ : SOpInst<"vqdmull_laneq", "rsji", "SsSi", OP_SCALAR_QDMULL_LNQ>;
+
+// Signed Saturating Doubling Multiply-Add Long (scalar by element)
+def SCALAR_SQDMLAL_LANE : SInst<"vqdmlal_lane", "rrsdi", "SsSi">;
+def SCALAR_SQDMLAL_LANEQ : SInst<"vqdmlal_laneq", "rrsji", "SsSi">;
+
+// Signed Saturating Doubling Multiply-Subtract Long (scalar by element)
+def SCALAR_SQDMLS_LANE : SInst<"vqdmlsl_lane", "rrsdi", "SsSi">;
+def SCALAR_SQDMLS_LANEQ : SInst<"vqdmlsl_laneq", "rrsji", "SsSi">;
+
+// Scalar Integer Saturating Doubling Multiply Half High (scalar by element)
+def SCALAR_SQDMULH_LANE : SOpInst<"vqdmulh_lane", "ssdi", "SsSi", OP_SCALAR_QDMULH_LN>;
+def SCALAR_SQDMULH_LANEQ : SOpInst<"vqdmulh_laneq", "ssji", "SsSi", OP_SCALAR_QDMULH_LNQ>;
+
+// Scalar Integer Saturating Rounding Doubling Multiply Half High
+def SCALAR_SQRDMULH_LANE : SOpInst<"vqrdmulh_lane", "ssdi", "SsSi", OP_SCALAR_QRDMULH_LN>;
+def SCALAR_SQRDMULH_LANEQ : SOpInst<"vqrdmulh_laneq", "ssji", "SsSi", OP_SCALAR_QRDMULH_LNQ>;
+
+def SCALAR_VDUP_LANE : IInst<"vdup_lane", "sdi", "ScSsSiSlSfSdSUcSUsSUiSUlSPcSPs">;
+def SCALAR_VDUP_LANEQ : IInst<"vdup_laneq", "sji", "ScSsSiSlSfSdSUcSUsSUiSUlSPcSPs">;
+
+def SCALAR_GET_LANE : IOpInst<"vget_lane", "sdi", "hQh", OP_SCALAR_GET_LN>;
+def SCALAR_SET_LANE : IOpInst<"vset_lane", "dsdi", "hQh", OP_SCALAR_SET_LN>;
+}
diff --git a/include/clang/CodeGen/CGFunctionInfo.h b/include/clang/CodeGen/CGFunctionInfo.h
new file mode 100644
index 000000000000..96da0e9de1ad
--- /dev/null
+++ b/include/clang/CodeGen/CGFunctionInfo.h
@@ -0,0 +1,361 @@
+//==-- CGFunctionInfo.h - Representation of function argument/return types -==//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Defines CGFunctionInfo and associated types used in representing the
+// LLVM source types and ABI-coerced types for function arguments and
+// return values.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_CODEGEN_FUNCTION_INFO_H
+#define LLVM_CLANG_CODEGEN_FUNCTION_INFO_H
+
+#include "clang/AST/CanonicalType.h"
+#include "clang/AST/Type.h"
+#include "llvm/ADT/FoldingSet.h"
+
+#include <cassert>
+
+namespace llvm {
+  class Type;
+}
+
+namespace clang {
+namespace CodeGen {
+
+/// ABIArgInfo - Helper class to encapsulate information about how a
+/// specific C type should be passed to or returned from a function.
+class ABIArgInfo {
+public:
+  enum Kind {
+    /// Direct - Pass the argument directly using the normal converted LLVM
+    /// type, or by coercing to another specified type stored in
+    /// 'CoerceToType').  If an offset is specified (in UIntData), then the
+    /// argument passed is offset by some number of bytes in the memory
+    /// representation. A dummy argument is emitted before the real argument
+    /// if the specified type stored in "PaddingType" is not zero.
+    Direct,
+
+    /// Extend - Valid only for integer argument types. Same as 'direct'
+    /// but also emit a zero/sign extension attribute.
+    Extend,
+
+    /// Indirect - Pass the argument indirectly via a hidden pointer
+    /// with the specified alignment (0 indicates default alignment).
+    Indirect,
+
+    /// Ignore - Ignore the argument (treat as void). Useful for void and
+    /// empty structs.
+    Ignore,
+
+    /// Expand - Only valid for aggregate argument types. The structure should
+    /// be expanded into consecutive arguments for its constituent fields.
+    /// Currently expand is only allowed on structures whose fields
+    /// are all scalar types or are themselves expandable types.
+    Expand,
+
+    KindFirst=Direct, KindLast=Expand
+  };
+
+private:
+  Kind TheKind;
+  llvm::Type *TypeData;
+  llvm::Type *PaddingType;
+  unsigned UIntData;
+  bool BoolData0;
+  bool BoolData1;
+  bool InReg;
+  bool PaddingInReg;
+
+  ABIArgInfo(Kind K, llvm::Type *TD, unsigned UI, bool B0, bool B1, bool IR,
+             bool PIR, llvm::Type* P)
+    : TheKind(K), TypeData(TD), PaddingType(P), UIntData(UI), BoolData0(B0),
+      BoolData1(B1), InReg(IR), PaddingInReg(PIR) {}
+
+public:
+  ABIArgInfo() : TheKind(Direct), TypeData(0), UIntData(0) {}
+
+  static ABIArgInfo getDirect(llvm::Type *T = 0, unsigned Offset = 0,
+                              llvm::Type *Padding = 0) {
+    return ABIArgInfo(Direct, T, Offset, false, false, false, false, Padding);
+  }
+  static ABIArgInfo getDirectInReg(llvm::Type *T = 0) {
+    return ABIArgInfo(Direct, T, 0, false, false, true, false, 0);
+  }
+  static ABIArgInfo getExtend(llvm::Type *T = 0) {
+    return ABIArgInfo(Extend, T, 0, false, false, false, false, 0);
+  }
+  static ABIArgInfo getExtendInReg(llvm::Type *T = 0) {
+    return ABIArgInfo(Extend, T, 0, false, false, true, false, 0);
+  }
+  static ABIArgInfo getIgnore() {
+    return ABIArgInfo(Ignore, 0, 0, false, false, false, false, 0);
+  }
+  static ABIArgInfo getIndirect(unsigned Alignment, bool ByVal = true
+                                , bool Realign = false
+                                , llvm::Type *Padding = 0) {
+    return ABIArgInfo(Indirect, 0, Alignment, ByVal, Realign, false, false,
+                      Padding);
+  }
+  static ABIArgInfo getIndirectInReg(unsigned Alignment, bool ByVal = true
+                                , bool Realign = false) {
+    return ABIArgInfo(Indirect, 0, Alignment, ByVal, Realign, true, false, 0);
+  }
+  static ABIArgInfo getExpand() {
+    return ABIArgInfo(Expand, 0, 0, false, false, false, false, 0);
+  }
+  static ABIArgInfo getExpandWithPadding(bool PaddingInReg,
+                                         llvm::Type *Padding) {
+   return ABIArgInfo(Expand, 0, 0, false, false, false, PaddingInReg,
+                     Padding);
+  }
+
+  Kind getKind() const { return TheKind; }
+  bool isDirect() const { return TheKind == Direct; }
+  bool isExtend() const { return TheKind == Extend; }
+  bool isIgnore() const { return TheKind == Ignore; }
+  bool isIndirect() const { return TheKind == Indirect; }
+  bool isExpand() const { return TheKind == Expand; }
+
+  bool canHaveCoerceToType() const {
+    return TheKind == Direct || TheKind == Extend;
+  }
+
+  // Direct/Extend accessors
+  unsigned getDirectOffset() const {
+    assert((isDirect() || isExtend()) && "Not a direct or extend kind");
+    return UIntData;
+  }
+
+  llvm::Type *getPaddingType() const {
+    return PaddingType;
+  }
+
+  bool getPaddingInReg() const {
+    return PaddingInReg;
+  }
+
+  llvm::Type *getCoerceToType() const {
+    assert(canHaveCoerceToType() && "Invalid kind!");
+    return TypeData;
+  }
+
+  void setCoerceToType(llvm::Type *T) {
+    assert(canHaveCoerceToType() && "Invalid kind!");
+    TypeData = T;
+  }
+
+  bool getInReg() const {
+    assert((isDirect() || isExtend() || isIndirect()) && "Invalid kind!");
+    return InReg;
+  }
+
+  // Indirect accessors
+  unsigned getIndirectAlign() const {
+    assert(TheKind == Indirect && "Invalid kind!");
+    return UIntData;
+  }
+
+  bool getIndirectByVal() const {
+    assert(TheKind == Indirect && "Invalid kind!");
+    return BoolData0;
+  }
+
+  bool getIndirectRealign() const {
+    assert(TheKind == Indirect && "Invalid kind!");
+    return BoolData1;
+  }
+
+  void dump() const;
+};
+
+/// A class for recording the number of arguments that a function
+/// signature requires.
+class RequiredArgs {
+  /// The number of required arguments, or ~0 if the signature does
+  /// not permit optional arguments.
+  unsigned NumRequired;
+public:
+  enum All_t { All };
+
+  RequiredArgs(All_t _) : NumRequired(~0U) {}
+  explicit RequiredArgs(unsigned n) : NumRequired(n) {
+    assert(n != ~0U);
+  }
+
+  /// Compute the arguments required by the given formal prototype,
+  /// given that there may be some additional, non-formal arguments
+  /// in play.
+  static RequiredArgs forPrototypePlus(const FunctionProtoType *prototype,
+                                       unsigned additional) {
+    if (!prototype->isVariadic()) return All;
+    return RequiredArgs(prototype->getNumArgs() + additional);
+  }
+
+  static RequiredArgs forPrototype(const FunctionProtoType *prototype) {
+    return forPrototypePlus(prototype, 0);
+  }
+
+  static RequiredArgs forPrototype(CanQual<FunctionProtoType> prototype) {
+    return forPrototype(prototype.getTypePtr());
+  }
+
+  static RequiredArgs forPrototypePlus(CanQual<FunctionProtoType> prototype,
+                                       unsigned additional) {
+    return forPrototypePlus(prototype.getTypePtr(), additional);
+  }
+
+  bool allowsOptionalArgs() const { return NumRequired != ~0U; }
+  unsigned getNumRequiredArgs() const {
+    assert(allowsOptionalArgs());
+    return NumRequired;
+  }
+
+  unsigned getOpaqueData() const { return NumRequired; }
+  static RequiredArgs getFromOpaqueData(unsigned value) {
+    if (value == ~0U) return All;
+    return RequiredArgs(value);
+  }
+};
+
+/// CGFunctionInfo - Class to encapsulate the information about a
+/// function definition.
+class CGFunctionInfo : public llvm::FoldingSetNode {
+  struct ArgInfo {
+    CanQualType type;
+    ABIArgInfo info;
+  };
+
+  /// The LLVM::CallingConv to use for this function (as specified by the
+  /// user).
+  unsigned CallingConvention : 8;
+
+  /// The LLVM::CallingConv to actually use for this function, which may
+  /// depend on the ABI.
+  unsigned EffectiveCallingConvention : 8;
+
+  /// The clang::CallingConv that this was originally created with.
+  unsigned ASTCallingConvention : 8;
+
+  /// Whether this function is noreturn.
+  unsigned NoReturn : 1;
+
+  /// Whether this function is returns-retained.
+  unsigned ReturnsRetained : 1;
+
+  /// How many arguments to pass inreg.
+  unsigned HasRegParm : 1;
+  unsigned RegParm : 4;
+
+  RequiredArgs Required;
+
+  unsigned NumArgs;
+  ArgInfo *getArgsBuffer() {
+    return reinterpret_cast<ArgInfo*>(this+1);
+  }
+  const ArgInfo *getArgsBuffer() const {
+    return reinterpret_cast<const ArgInfo*>(this + 1);
+  }
+
+  CGFunctionInfo() : Required(RequiredArgs::All) {}
+
+public:
+  static CGFunctionInfo *create(unsigned llvmCC,
+                                const FunctionType::ExtInfo &extInfo,
+                                CanQualType resultType,
+                                ArrayRef<CanQualType> argTypes,
+                                RequiredArgs required);
+
+  typedef const ArgInfo *const_arg_iterator;
+  typedef ArgInfo *arg_iterator;
+
+  const_arg_iterator arg_begin() const { return getArgsBuffer() + 1; }
+  const_arg_iterator arg_end() const { return getArgsBuffer() + 1 + NumArgs; }
+  arg_iterator arg_begin() { return getArgsBuffer() + 1; }
+  arg_iterator arg_end() { return getArgsBuffer() + 1 + NumArgs; }
+
+  unsigned  arg_size() const { return NumArgs; }
+
+  bool isVariadic() const { return Required.allowsOptionalArgs(); }
+  RequiredArgs getRequiredArgs() const { return Required; }
+
+  bool isNoReturn() const { return NoReturn; }
+
+  /// In ARC, whether this function retains its return value.  This
+  /// is not always reliable for call sites.
+  bool isReturnsRetained() const { return ReturnsRetained; }
+
+  /// getASTCallingConvention() - Return the AST-specified calling
+  /// convention.
+  CallingConv getASTCallingConvention() const {
+    return CallingConv(ASTCallingConvention);
+  }
+
+  /// getCallingConvention - Return the user specified calling
+  /// convention, which has been translated into an LLVM CC.
+  unsigned getCallingConvention() const { return CallingConvention; }
+
+  /// getEffectiveCallingConvention - Return the actual calling convention to
+  /// use, which may depend on the ABI.
+  unsigned getEffectiveCallingConvention() const {
+    return EffectiveCallingConvention;
+  }
+  void setEffectiveCallingConvention(unsigned Value) {
+    EffectiveCallingConvention = Value;
+  }
+
+  bool getHasRegParm() const { return HasRegParm; }
+  unsigned getRegParm() const { return RegParm; }
+
+  FunctionType::ExtInfo getExtInfo() const {
+    return FunctionType::ExtInfo(isNoReturn(),
+                                 getHasRegParm(), getRegParm(),
+                                 getASTCallingConvention(),
+                                 isReturnsRetained());
+  }
+
+  CanQualType getReturnType() const { return getArgsBuffer()[0].type; }
+
+  ABIArgInfo &getReturnInfo() { return getArgsBuffer()[0].info; }
+  const ABIArgInfo &getReturnInfo() const { return getArgsBuffer()[0].info; }
+
+  void Profile(llvm::FoldingSetNodeID &ID) {
+    ID.AddInteger(getASTCallingConvention());
+    ID.AddBoolean(NoReturn);
+    ID.AddBoolean(ReturnsRetained);
+    ID.AddBoolean(HasRegParm);
+    ID.AddInteger(RegParm);
+    ID.AddInteger(Required.getOpaqueData());
+    getReturnType().Profile(ID);
+    for (arg_iterator it = arg_begin(), ie = arg_end(); it != ie; ++it)
+      it->type.Profile(ID);
+  }
+  static void Profile(llvm::FoldingSetNodeID &ID,
+                      const FunctionType::ExtInfo &info,
+                      RequiredArgs required,
+                      CanQualType resultType,
+                      ArrayRef<CanQualType> argTypes) {
+    ID.AddInteger(info.getCC());
+    ID.AddBoolean(info.getNoReturn());
+    ID.AddBoolean(info.getProducesResult());
+    ID.AddBoolean(info.getHasRegParm());
+    ID.AddInteger(info.getRegParm());
+    ID.AddInteger(required.getOpaqueData());
+    resultType.Profile(ID);
+    for (ArrayRef<CanQualType>::iterator
+           i = argTypes.begin(), e = argTypes.end(); i != e; ++i) {
+      i->Profile(ID);
+    }
+  }
+};
+
+}  // end namespace CodeGen
+}  // end namespace clang
+
+#endif
diff --git a/include/clang/CodeGen/CodeGenABITypes.h b/include/clang/CodeGen/CodeGenABITypes.h
new file mode 100644
index 000000000000..81e2cdc1901b
--- /dev/null
+++ b/include/clang/CodeGen/CodeGenABITypes.h
@@ -0,0 +1,80 @@
+//==---- CodeGenABITypes.h - Convert Clang types to LLVM types for ABI -----==//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// CodeGenABITypes is a simple interface for getting LLVM types for
+// the parameters and the return value of a function given the Clang
+// types.
+//
+// The class is implemented as a public wrapper around the private
+// CodeGenTypes class in lib/CodeGen.
+//
+// It allows other clients, like LLDB, to determine the LLVM types that are
+// actually used in function calls, which makes it possible to then determine
+// the acutal ABI locations (e.g. registers, stack locations, etc.) that
+// these parameters are stored in.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_CODEGEN_ABITYPES_H
+#define LLVM_CLANG_CODEGEN_ABITYPES_H
+
+#include "clang/AST/CanonicalType.h"
+#include "clang/AST/Type.h"
+#include "clang/CodeGen/CGFunctionInfo.h"
+
+namespace llvm {
+  class DataLayout;
+  class Module;
+}
+
+namespace clang {
+class ASTContext;
+class CXXRecordDecl;
+class CodeGenOptions;
+class DiagnosticsEngine;
+class ObjCMethodDecl;
+
+namespace CodeGen {
+class CGFunctionInfo;
+class CodeGenModule;
+
+class CodeGenABITypes
+{
+public:
+  CodeGenABITypes(ASTContext &C, const CodeGenOptions &CodeGenOpts,
+                  llvm::Module &M, const llvm::DataLayout &TD,
+                  DiagnosticsEngine &Diags);
+
+  ~CodeGenABITypes();
+
+  /// These methods all forward to methods in the private implementation class
+  /// CodeGenTypes.
+
+  const CGFunctionInfo &arrangeObjCMessageSendSignature(
+                                                     const ObjCMethodDecl *MD,
+                                                     QualType receiverType);
+  const CGFunctionInfo &arrangeFreeFunctionType(
+                                               CanQual<FunctionProtoType> Ty);
+  const CGFunctionInfo &arrangeFreeFunctionType(
+                                             CanQual<FunctionNoProtoType> Ty);
+  const CGFunctionInfo &arrangeCXXMethodType(const CXXRecordDecl *RD,
+                                             const FunctionProtoType *FTP);
+  const CGFunctionInfo &arrangeLLVMFunctionInfo(CanQualType returnType,
+                                         llvm::ArrayRef<CanQualType> argTypes,
+                                         FunctionType::ExtInfo info,
+                                         RequiredArgs args);
+
+private:
+  CodeGen::CodeGenModule *CGM;
+};
+
+}  // end namespace CodeGen
+}  // end namespace clang
+
+#endif
diff --git a/include/clang/Driver/Action.h b/include/clang/Driver/Action.h
index 4057e48f69a4..289dbe3ee4f8 100644
--- a/include/clang/Driver/Action.h
+++ b/include/clang/Driver/Action.h
@@ -14,9 +14,14 @@
 #include "clang/Driver/Util.h"
 #include "llvm/ADT/SmallVector.h"
 
+namespace llvm {
+namespace opt {
+  class Arg;
+}
+}
+
 namespace clang {
 namespace driver {
-  class Arg;
 
 /// Action - Represent an abstract compilation step to perform.
 ///
@@ -94,11 +99,12 @@ public:
 
 class InputAction : public Action {
   virtual void anchor();
-  const Arg &Input;
+  const llvm::opt::Arg &Input;
+
 public:
-  InputAction(const Arg &_Input, types::ID _Type);
+  InputAction(const llvm::opt::Arg &_Input, types::ID _Type);
 
-  const Arg &getInputArg() const { return Input; }
+  const llvm::opt::Arg &getInputArg() const { return Input; }
 
   static bool classof(const Action *A) {
     return A->getKind() == InputClass;
diff --git a/include/clang/Driver/Arg.h b/include/clang/Driver/Arg.h
deleted file mode 100644
index 662a2e2c618b..000000000000
--- a/include/clang/Driver/Arg.h
+++ /dev/null
@@ -1,133 +0,0 @@
-//===--- Arg.h - Parsed Argument Classes ------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-///
-/// \file
-/// \brief Defines the clang::driver::Arg class for parsed arguments.
-///
-//===----------------------------------------------------------------------===//
-
-#ifndef CLANG_DRIVER_ARG_H_
-#define CLANG_DRIVER_ARG_H_
-
-#include "Util.h"
-#include "clang/Driver/Option.h"
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/ADT/StringRef.h"
-#include <string>
-
-namespace clang {
-namespace driver {
-  class ArgList;
-
-  /// \brief A concrete instance of a particular driver option.
-  ///
-  /// The Arg class encodes just enough information to be able to
-  /// derive the argument values efficiently. In addition, Arg
-  /// instances have an intrusive double linked list which is used by
-  /// ArgList to provide efficient iteration over all instances of a
-  /// particular option.
-  class Arg {
-    Arg(const Arg &) LLVM_DELETED_FUNCTION;
-    void operator=(const Arg &) LLVM_DELETED_FUNCTION;
-
-  private:
-    /// \brief The option this argument is an instance of.
-    const Option Opt;
-
-    /// \brief The argument this argument was derived from (during tool chain
-    /// argument translation), if any.
-    const Arg *BaseArg;
-
-    /// \brief How this instance of the option was spelled.
-    StringRef Spelling;
-
-    /// \brief The index at which this argument appears in the containing
-    /// ArgList.
-    unsigned Index;
-
-    /// \brief Was this argument used to affect compilation?
-    ///
-    /// This is used for generating "argument unused" diagnostics.
-    mutable unsigned Claimed : 1;
-
-    /// \brief Does this argument own its values?
-    mutable unsigned OwnsValues : 1;
-
-    /// \brief The argument values, as C strings.
-    SmallVector<const char *, 2> Values;
-
-  public:
-    Arg(const Option Opt, StringRef Spelling, unsigned Index,
-        const Arg *BaseArg = 0);
-    Arg(const Option Opt, StringRef Spelling, unsigned Index,
-        const char *Value0, const Arg *BaseArg = 0);
-    Arg(const Option Opt, StringRef Spelling, unsigned Index,
-        const char *Value0, const char *Value1, const Arg *BaseArg = 0);
-    ~Arg();
-
-    Option getOption() const { return Opt; }
-    StringRef getSpelling() const { return Spelling; }
-    unsigned getIndex() const { return Index; }
-
-    /// \brief Return the base argument which generated this arg.
-    ///
-    /// This is either the argument itself or the argument it was
-    /// derived from during tool chain specific argument translation.
-    const Arg &getBaseArg() const {
-      return BaseArg ? *BaseArg : *this;
-    }
-    void setBaseArg(const Arg *_BaseArg) {
-      BaseArg = _BaseArg;
-    }
-
-    bool getOwnsValues() const { return OwnsValues; }
-    void setOwnsValues(bool Value) const { OwnsValues = Value; }
-
-    bool isClaimed() const { return getBaseArg().Claimed; }
-
-    /// \brief Set the Arg claimed bit.
-    void claim() const { getBaseArg().Claimed = true; }
-
-    unsigned getNumValues() const { return Values.size(); }
-    const char *getValue(unsigned N = 0) const {
-      return Values[N];
-    }
-
-    SmallVectorImpl<const char*> &getValues() {
-      return Values;
-    }
-
-    bool containsValue(StringRef Value) const {
-      for (unsigned i = 0, e = getNumValues(); i != e; ++i)
-        if (Values[i] == Value)
-          return true;
-      return false;
-    }
-
-    /// \brief Append the argument onto the given array as strings.
-    void render(const ArgList &Args, ArgStringList &Output) const;
-
-    /// \brief Append the argument, render as an input, onto the given
-    /// array as strings.
-    ///
-    /// The distinction is that some options only render their values
-    /// when rendered as a input (e.g., Xlinker).
-    void renderAsInput(const ArgList &Args, ArgStringList &Output) const;
-
-    void dump() const;
-
-    /// \brief Return a formatted version of the argument and
-    /// its values, for debugging and diagnostics.
-    std::string getAsString(const ArgList &Args) const;
-  };
-
-} // end namespace driver
-} // end namespace clang
-
-#endif
diff --git a/include/clang/Driver/ArgList.h b/include/clang/Driver/ArgList.h
deleted file mode 100644
index 9db170c4a254..000000000000
--- a/include/clang/Driver/ArgList.h
+++ /dev/null
@@ -1,442 +0,0 @@
-//===--- ArgList.h - Argument List Management ----------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef CLANG_DRIVER_ARGLIST_H_
-#define CLANG_DRIVER_ARGLIST_H_
-
-#include "clang/Basic/LLVM.h"
-#include "clang/Driver/OptSpecifier.h"
-#include "clang/Driver/Option.h"
-#include "clang/Driver/Util.h"
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/ADT/StringRef.h"
-#include <list>
-#include <string>
-#include <vector>
-
-namespace clang {
-  class DiagnosticsEngine;
-
-namespace driver {
-  class Arg;
-  class ArgList;
-  class Option;
-
-  /// arg_iterator - Iterates through arguments stored inside an ArgList.
-  class arg_iterator {
-    /// The current argument.
-    SmallVectorImpl<Arg*>::const_iterator Current;
-
-    /// The argument list we are iterating over.
-    const ArgList &Args;
-
-    /// Optional filters on the arguments which will be match. Most clients
-    /// should never want to iterate over arguments without filters, so we won't
-    /// bother to factor this into two separate iterator implementations.
-    //
-    // FIXME: Make efficient; the idea is to provide efficient iteration over
-    // all arguments which match a particular id and then just provide an
-    // iterator combinator which takes multiple iterators which can be
-    // efficiently compared and returns them in order.
-    OptSpecifier Id0, Id1, Id2;
-
-    void SkipToNextArg();
-
-  public:
-    typedef Arg * const *                 value_type;
-    typedef Arg * const &                 reference;
-    typedef Arg * const *                 pointer;
-    typedef std::forward_iterator_tag   iterator_category;
-    typedef std::ptrdiff_t              difference_type;
-
-    arg_iterator(SmallVectorImpl<Arg*>::const_iterator it,
-                 const ArgList &_Args, OptSpecifier _Id0 = 0U,
-                 OptSpecifier _Id1 = 0U, OptSpecifier _Id2 = 0U)
-      : Current(it), Args(_Args), Id0(_Id0), Id1(_Id1), Id2(_Id2) {
-      SkipToNextArg();
-    }
-
-    operator const Arg*() { return *Current; }
-    reference operator*() const { return *Current; }
-    pointer operator->() const { return Current; }
-
-    arg_iterator &operator++() {
-      ++Current;
-      SkipToNextArg();
-      return *this;
-    }
-
-    arg_iterator operator++(int) {
-      arg_iterator tmp(*this);
-      ++(*this);
-      return tmp;
-    }
-
-    friend bool operator==(arg_iterator LHS, arg_iterator RHS) {
-      return LHS.Current == RHS.Current;
-    }
-    friend bool operator!=(arg_iterator LHS, arg_iterator RHS) {
-      return !(LHS == RHS);
-    }
-  };
-
-  /// ArgList - Ordered collection of driver arguments.
-  ///
-  /// The ArgList class manages a list of Arg instances as well as
-  /// auxiliary data and convenience methods to allow Tools to quickly
-  /// check for the presence of Arg instances for a particular Option
-  /// and to iterate over groups of arguments.
-  class ArgList {
-  private:
-    ArgList(const ArgList &) LLVM_DELETED_FUNCTION;
-    void operator=(const ArgList &) LLVM_DELETED_FUNCTION;
-
-  public:
-    typedef SmallVector<Arg*, 16> arglist_type;
-    typedef arglist_type::iterator iterator;
-    typedef arglist_type::const_iterator const_iterator;
-    typedef arglist_type::reverse_iterator reverse_iterator;
-    typedef arglist_type::const_reverse_iterator const_reverse_iterator;
-
-  private:
-    /// The internal list of arguments.
-    arglist_type Args;
-
-  protected:
-    ArgList();
-
-  public:
-    virtual ~ArgList();
-
-    /// @name Arg Access
-    /// @{
-
-    /// append - Append \p A to the arg list.
-    void append(Arg *A);
-
-    arglist_type &getArgs() { return Args; }
-    const arglist_type &getArgs() const { return Args; }
-
-    unsigned size() const { return Args.size(); }
-
-    /// @}
-    /// @name Arg Iteration
-    /// @{
-
-    iterator begin() { return Args.begin(); }
-    iterator end() { return Args.end(); }
-
-    reverse_iterator rbegin() { return Args.rbegin(); }
-    reverse_iterator rend() { return Args.rend(); }
-
-    const_iterator begin() const { return Args.begin(); }
-    const_iterator end() const { return Args.end(); }
-
-    const_reverse_iterator rbegin() const { return Args.rbegin(); }
-    const_reverse_iterator rend() const { return Args.rend(); }
-
-    arg_iterator filtered_begin(OptSpecifier Id0 = 0U, OptSpecifier Id1 = 0U,
-                                OptSpecifier Id2 = 0U) const {
-      return arg_iterator(Args.begin(), *this, Id0, Id1, Id2);
-    }
-    arg_iterator filtered_end() const {
-      return arg_iterator(Args.end(), *this);
-    }
-
-    /// @}
-    /// @name Arg Removal
-    /// @{
-
-    /// eraseArg - Remove any option matching \p Id.
-    void eraseArg(OptSpecifier Id);
-
-    /// @}
-    /// @name Arg Access
-    /// @{
-
-    /// hasArg - Does the arg list contain any option matching \p Id.
-    ///
-    /// \p Claim Whether the argument should be claimed, if it exists.
-    bool hasArgNoClaim(OptSpecifier Id) const {
-      return getLastArgNoClaim(Id) != 0;
-    }
-    bool hasArg(OptSpecifier Id) const {
-      return getLastArg(Id) != 0;
-    }
-    bool hasArg(OptSpecifier Id0, OptSpecifier Id1) const {
-      return getLastArg(Id0, Id1) != 0;
-    }
-    bool hasArg(OptSpecifier Id0, OptSpecifier Id1, OptSpecifier Id2) const {
-      return getLastArg(Id0, Id1, Id2) != 0;
-    }
-
-    /// getLastArg - Return the last argument matching \p Id, or null.
-    ///
-    /// \p Claim Whether the argument should be claimed, if it exists.
-    Arg *getLastArgNoClaim(OptSpecifier Id) const;
-    Arg *getLastArg(OptSpecifier Id) const;
-    Arg *getLastArg(OptSpecifier Id0, OptSpecifier Id1) const;
-    Arg *getLastArg(OptSpecifier Id0, OptSpecifier Id1, OptSpecifier Id2) const;
-    Arg *getLastArg(OptSpecifier Id0, OptSpecifier Id1, OptSpecifier Id2,
-                    OptSpecifier Id3) const;
-    Arg *getLastArg(OptSpecifier Id0, OptSpecifier Id1, OptSpecifier Id2,
-                    OptSpecifier Id3, OptSpecifier Id4) const;
-    Arg *getLastArg(OptSpecifier Id0, OptSpecifier Id1, OptSpecifier Id2,
-                    OptSpecifier Id3, OptSpecifier Id4, OptSpecifier Id5) const;
-    Arg *getLastArg(OptSpecifier Id0, OptSpecifier Id1, OptSpecifier Id2,
-                    OptSpecifier Id3, OptSpecifier Id4, OptSpecifier Id5,
-                    OptSpecifier Id6) const;
-    Arg *getLastArg(OptSpecifier Id0, OptSpecifier Id1, OptSpecifier Id2,
-                    OptSpecifier Id3, OptSpecifier Id4, OptSpecifier Id5,
-                    OptSpecifier Id6, OptSpecifier Id7) const;
-
-    /// getArgString - Return the input argument string at \p Index.
-    virtual const char *getArgString(unsigned Index) const = 0;
-
-    /// getNumInputArgStrings - Return the number of original argument strings,
-    /// which are guaranteed to be the first strings in the argument string
-    /// list.
-    virtual unsigned getNumInputArgStrings() const = 0;
-
-    /// @}
-    /// @name Argument Lookup Utilities
-    /// @{
-
-    /// getLastArgValue - Return the value of the last argument, or a default.
-    StringRef getLastArgValue(OptSpecifier Id,
-                                    StringRef Default = "") const;
-
-    /// getLastArgValue - Return the value of the last argument as an integer,
-    /// or a default. If Diags is non-null, emits an error if the argument
-    /// is given, but non-integral.
-    int getLastArgIntValue(OptSpecifier Id, int Default,
-                           DiagnosticsEngine *Diags = 0) const;
-
-    /// getLastArgValue - Return the value of the last argument as an integer,
-    /// or a default. Emits an error if the argument is given, but non-integral.
-    int getLastArgIntValue(OptSpecifier Id, int Default,
-                           DiagnosticsEngine &Diags) const {
-      return getLastArgIntValue(Id, Default, &Diags);
-    }
-
-    /// getAllArgValues - Get the values of all instances of the given argument
-    /// as strings.
-    std::vector<std::string> getAllArgValues(OptSpecifier Id) const;
-
-    /// @}
-    /// @name Translation Utilities
-    /// @{
-
-    /// hasFlag - Given an option \p Pos and its negative form \p Neg, return
-    /// true if the option is present, false if the negation is present, and
-    /// \p Default if neither option is given. If both the option and its
-    /// negation are present, the last one wins.
-    bool hasFlag(OptSpecifier Pos, OptSpecifier Neg, bool Default = true) const;
-
-    /// hasFlag - Given an option \p Pos, an alias \p PosAlias and its negative
-    /// form \p Neg, return true if the option or its alias is present, false if
-    /// the negation is present, and \p Default if none of the options are
-    /// given. If multiple options are present, the last one wins.
-    bool hasFlag(OptSpecifier Pos, OptSpecifier PosAlias, OptSpecifier Neg,
-                 bool Default = true) const;
-
-    /// AddLastArg - Render only the last argument match \p Id0, if present.
-    void AddLastArg(ArgStringList &Output, OptSpecifier Id0) const;
-    void AddLastArg(ArgStringList &Output, OptSpecifier Id0,
-                    OptSpecifier Id1) const;
-
-    /// AddAllArgs - Render all arguments matching the given ids.
-    void AddAllArgs(ArgStringList &Output, OptSpecifier Id0,
-                    OptSpecifier Id1 = 0U, OptSpecifier Id2 = 0U) const;
-
-    /// AddAllArgValues - Render the argument values of all arguments
-    /// matching the given ids.
-    void AddAllArgValues(ArgStringList &Output, OptSpecifier Id0,
-                         OptSpecifier Id1 = 0U, OptSpecifier Id2 = 0U) const;
-
-    /// AddAllArgsTranslated - Render all the arguments matching the
-    /// given ids, but forced to separate args and using the provided
-    /// name instead of the first option value.
-    ///
-    /// \param Joined - If true, render the argument as joined with
-    /// the option specifier.
-    void AddAllArgsTranslated(ArgStringList &Output, OptSpecifier Id0,
-                              const char *Translation,
-                              bool Joined = false) const;
-
-    /// ClaimAllArgs - Claim all arguments which match the given
-    /// option id.
-    void ClaimAllArgs(OptSpecifier Id0) const;
-
-    /// ClaimAllArgs - Claim all arguments.
-    ///
-    void ClaimAllArgs() const;
-
-    /// @}
-    /// @name Arg Synthesis
-    /// @{
-
-    /// MakeArgString - Construct a constant string pointer whose
-    /// lifetime will match that of the ArgList.
-    virtual const char *MakeArgString(StringRef Str) const = 0;
-    const char *MakeArgString(const char *Str) const {
-      return MakeArgString(StringRef(Str));
-    }
-    const char *MakeArgString(std::string Str) const {
-      return MakeArgString(StringRef(Str));
-    }
-    const char *MakeArgString(const Twine &Str) const;
-
-    /// \brief Create an arg string for (\p LHS + \p RHS), reusing the
-    /// string at \p Index if possible.
-    const char *GetOrMakeJoinedArgString(unsigned Index, StringRef LHS,
-                                         StringRef RHS) const;
-
-    /// @}
-
-    void dump();
-  };
-
-  class InputArgList : public ArgList  {
-  private:
-    /// List of argument strings used by the contained Args.
-    ///
-    /// This is mutable since we treat the ArgList as being the list
-    /// of Args, and allow routines to add new strings (to have a
-    /// convenient place to store the memory) via MakeIndex.
-    mutable ArgStringList ArgStrings;
-
-    /// Strings for synthesized arguments.
-    ///
-    /// This is mutable since we treat the ArgList as being the list
-    /// of Args, and allow routines to add new strings (to have a
-    /// convenient place to store the memory) via MakeIndex.
-    mutable std::list<std::string> SynthesizedStrings;
-
-    /// The number of original input argument strings.
-    unsigned NumInputArgStrings;
-
-  public:
-    InputArgList(const char* const *ArgBegin, const char* const *ArgEnd);
-    ~InputArgList();
-
-    virtual const char *getArgString(unsigned Index) const {
-      return ArgStrings[Index];
-    }
-
-    virtual unsigned getNumInputArgStrings() const {
-      return NumInputArgStrings;
-    }
-
-    /// @name Arg Synthesis
-    /// @{
-
-  public:
-    /// MakeIndex - Get an index for the given string(s).
-    unsigned MakeIndex(StringRef String0) const;
-    unsigned MakeIndex(StringRef String0, StringRef String1) const;
-
-    virtual const char *MakeArgString(StringRef Str) const;
-
-    /// @}
-  };
-
-  /// DerivedArgList - An ordered collection of driver arguments,
-  /// whose storage may be in another argument list.
-  class DerivedArgList : public ArgList {
-    const InputArgList &BaseArgs;
-
-    /// The list of arguments we synthesized.
-    mutable arglist_type SynthesizedArgs;
-
-  public:
-    /// Construct a new derived arg list from \p BaseArgs.
-    DerivedArgList(const InputArgList &BaseArgs);
-    ~DerivedArgList();
-
-    virtual const char *getArgString(unsigned Index) const {
-      return BaseArgs.getArgString(Index);
-    }
-
-    virtual unsigned getNumInputArgStrings() const {
-      return BaseArgs.getNumInputArgStrings();
-    }
-
-    const InputArgList &getBaseArgs() const {
-      return BaseArgs;
-    }
-
-    /// @name Arg Synthesis
-    /// @{
-
-    /// AddSynthesizedArg - Add a argument to the list of synthesized arguments
-    /// (to be freed).
-    void AddSynthesizedArg(Arg *A) {
-      SynthesizedArgs.push_back(A);
-    }
-
-    virtual const char *MakeArgString(StringRef Str) const;
-
-    /// AddFlagArg - Construct a new FlagArg for the given option \p Id and
-    /// append it to the argument list.
-    void AddFlagArg(const Arg *BaseArg, const Option Opt) {
-      append(MakeFlagArg(BaseArg, Opt));
-    }
-
-    /// AddPositionalArg - Construct a new Positional arg for the given option
-    /// \p Id, with the provided \p Value and append it to the argument
-    /// list.
-    void AddPositionalArg(const Arg *BaseArg, const Option Opt,
-                          StringRef Value) {
-      append(MakePositionalArg(BaseArg, Opt, Value));
-    }
-
-
-    /// AddSeparateArg - Construct a new Positional arg for the given option
-    /// \p Id, with the provided \p Value and append it to the argument
-    /// list.
-    void AddSeparateArg(const Arg *BaseArg, const Option Opt,
-                        StringRef Value) {
-      append(MakeSeparateArg(BaseArg, Opt, Value));
-    }
-
-
-    /// AddJoinedArg - Construct a new Positional arg for the given option
-    /// \p Id, with the provided \p Value and append it to the argument list.
-    void AddJoinedArg(const Arg *BaseArg, const Option Opt,
-                      StringRef Value) {
-      append(MakeJoinedArg(BaseArg, Opt, Value));
-    }
-
-
-    /// MakeFlagArg - Construct a new FlagArg for the given option \p Id.
-    Arg *MakeFlagArg(const Arg *BaseArg, const Option Opt) const;
-
-    /// MakePositionalArg - Construct a new Positional arg for the
-    /// given option \p Id, with the provided \p Value.
-    Arg *MakePositionalArg(const Arg *BaseArg, const Option Opt,
-                           StringRef Value) const;
-
-    /// MakeSeparateArg - Construct a new Positional arg for the
-    /// given option \p Id, with the provided \p Value.
-    Arg *MakeSeparateArg(const Arg *BaseArg, const Option Opt,
-                         StringRef Value) const;
-
-    /// MakeJoinedArg - Construct a new Positional arg for the
-    /// given option \p Id, with the provided \p Value.
-    Arg *MakeJoinedArg(const Arg *BaseArg, const Option Opt,
-                       StringRef Value) const;
-
-    /// @}
-  };
-
-} // end namespace driver
-} // end namespace clang
-
-#endif
diff --git a/include/clang/Driver/CC1AsOptions.h b/include/clang/Driver/CC1AsOptions.h
index 420a10138cba..345f50a57d5f 100644
--- a/include/clang/Driver/CC1AsOptions.h
+++ b/include/clang/Driver/CC1AsOptions.h
@@ -10,24 +10,27 @@
 #ifndef CLANG_DRIVER_CC1ASOPTIONS_H
 #define CLANG_DRIVER_CC1ASOPTIONS_H
 
+namespace llvm {
+namespace opt {
+  class OptTable;
+}
+}
+
 namespace clang {
 namespace driver {
-  class OptTable;
 
 namespace cc1asoptions {
   enum ID {
     OPT_INVALID = 0, // This is not an option ID.
-#define PREFIX(NAME, VALUE)
-#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, FLAGS, PARAM, \
+#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
                HELPTEXT, METAVAR) OPT_##ID,
 #include "clang/Driver/CC1AsOptions.inc"
     LastOption
 #undef OPTION
-#undef PREFIX
   };
 }
 
-  OptTable *createCC1AsOptTable();
+llvm::opt::OptTable *createCC1AsOptTable();
 }
 }
 
diff --git a/include/clang/Driver/CC1AsOptions.td b/include/clang/Driver/CC1AsOptions.td
index 2749bcd7779c..b536724f2425 100644
--- a/include/clang/Driver/CC1AsOptions.td
+++ b/include/clang/Driver/CC1AsOptions.td
@@ -12,7 +12,7 @@
 //===----------------------------------------------------------------------===//
 
 // Include the common option parsing interfaces.
-include "OptParser.td"
+include "llvm/Option/OptParser.td"
 
 //===----------------------------------------------------------------------===//
 // Target Options
@@ -33,7 +33,7 @@ def I : JoinedOrSeparate<["-"], "I">, MetaVarName<"<directory>">,
   HelpText<"Add directory to include search path">;
 def n : Flag<["-"], "n">,
   HelpText<"Don't automatically start assembly file with a text section">;
-def L : Flag<["-"], "L">,
+def msave_temp_labels : Flag<["-"], "msave-temp-labels">,
   HelpText<"Save temporary labels in the symbol table. "
            "Note this may change .s semantics, it should almost never be used "
            "on compiler generated code!">;
@@ -77,15 +77,12 @@ def show_inst : Flag<["-"], "show-inst">,
 // Assemble Options
 //===----------------------------------------------------------------------===//
 
-def relax_all : Flag<["-"], "relax-all">,
+def mrelax_all : Flag<["-"], "mrelax-all">,
     HelpText<"Relax all fixups (for performance testing)">;
 
-def no_exec_stack : Flag<["--"], "noexecstack">,
+def mno_exec_stack : Flag<["-"], "mnoexecstack">,
     HelpText<"Mark the file as not needing an executable stack">;
 
-def fatal_warnings : Flag<["--"], "fatal-warnings">,
-    HelpText<"Consider warnings as errors">;
-
 def g : Flag<["-"], "g">, HelpText<"Generate source level debug information">;
 
 def fdebug_compilation_dir : Separate<["-"], "fdebug-compilation-dir">,
diff --git a/include/clang/Driver/CC1Options.td b/include/clang/Driver/CC1Options.td
index 96a50fc5c66a..85cfdcf3946b 100644
--- a/include/clang/Driver/CC1Options.td
+++ b/include/clang/Driver/CC1Options.td
@@ -23,6 +23,8 @@ def target_abi : Separate<["-"], "target-abi">,
   HelpText<"Target a particular ABI type">;
 def target_cpu : Separate<["-"], "target-cpu">,
   HelpText<"Target a specific cpu type">;
+def mfpmath : Separate<["-"], "mfpmath">,
+  HelpText<"Which unit to use for fp math">;
 def target_feature : Separate<["-"], "target-feature">,
   HelpText<"Target specific attributes">;
 def target_linker_version : Separate<["-"], "target-linker-version">,
@@ -136,6 +138,8 @@ def dwarf_column_info : Flag<["-"], "dwarf-column-info">,
   HelpText<"Turn on column location information.">;
 def split_dwarf : Flag<["-"], "split-dwarf">,
   HelpText<"Split out the dwarf .dwo sections">;
+def gnu_pubnames : Flag<["-"], "gnu-pubnames">,
+  HelpText<"Emit newer GNU style pubnames">;
 def fforbid_guard_variables : Flag<["-"], "fforbid-guard-variables">,
   HelpText<"Emit an error if a C++ static local initializer would need a guard variable">;
 def no_implicit_float : Flag<["-"], "no-implicit-float">,
@@ -161,8 +165,8 @@ def fuse_register_sized_bitfield_access: Flag<["-"], "fuse-register-sized-bitfie
   HelpText<"Use register sized accesses to bit-fields, when possible.">;
 def relaxed_aliasing : Flag<["-"], "relaxed-aliasing">,
   HelpText<"Turn off Type Based Alias Analysis">;
-def struct_path_tbaa : Flag<["-"], "struct-path-tbaa">,
-  HelpText<"Turn on struct-path aware Type Based Alias Analysis">;
+def no_struct_path_tbaa : Flag<["-"], "no-struct-path-tbaa">,
+  HelpText<"Turn off struct-path aware Type Based Alias Analysis">;
 def masm_verbose : Flag<["-"], "masm-verbose">,
   HelpText<"Generate verbose assembly output">;
 def mcode_model : Separate<["-"], "mcode-model">,
@@ -204,6 +208,14 @@ def mconstructor_aliases : Flag<["-"], "mconstructor-aliases">,
   HelpText<"Emit complete constructors and destructors as aliases when possible">;
 def mlink_bitcode_file : Separate<["-"], "mlink-bitcode-file">,
   HelpText<"Link the given bitcode file before performing optimizations.">;
+def vectorize_loops : Flag<["-"], "vectorize-loops">,
+  HelpText<"Run the Loop vectorization passes">;
+def vectorize_slp : Flag<["-"], "vectorize-slp">,
+  HelpText<"Run the SLP vectorization passes">;
+def vectorize_slp_aggressive : Flag<["-"], "vectorize-slp-aggressive">,
+  HelpText<"Run the BB vectorization passes">;
+def dependent_lib : Joined<["--"], "dependent-lib=">,
+  HelpText<"Add dependent library">;
 
 //===----------------------------------------------------------------------===//
 // Dependency Output Options
@@ -213,6 +225,8 @@ def sys_header_deps : Flag<["-"], "sys-header-deps">,
   HelpText<"Include system headers in dependency output">;
 def header_include_file : Separate<["-"], "header-include-file">,
   HelpText<"Filename (or -) to write header include output to">;
+def show_includes : Flag<["--"], "show-includes">,
+  HelpText<"Print cl.exe style /showIncludes to stderr">;
 
 //===----------------------------------------------------------------------===//
 // Diagnostic Options
@@ -290,6 +304,8 @@ def ast_dump_filter : Separate<["-"], "ast-dump-filter">,
   HelpText<"Use with -ast-dump or -ast-print to dump/print only AST declaration"
            " nodes having a certain substring in a qualified name. Use"
            " -ast-list to list all filterable declaration node names.">;
+def ast_dump_lookups : Flag<["-"], "ast-dump-lookups">,
+  HelpText<"Include name lookup table dumps in AST dumps">;
 def fno_modules_global_index : Flag<["-"], "fno-modules-global-index">,
   HelpText<"Do not automatically generate or update the global module index">;
 
@@ -320,8 +336,6 @@ def ast_list : Flag<["-"], "ast-list">,
   HelpText<"Build ASTs and print the list of declaration node qualified names">;
 def ast_dump : Flag<["-"], "ast-dump">,
   HelpText<"Build ASTs and then debug dump them">;
-def ast_dump_xml : Flag<["-"], "ast-dump-xml">,
-  HelpText<"Build ASTs and then debug dump them in a verbose XML format">;
 def ast_view : Flag<["-"], "ast-view">,
   HelpText<"Build ASTs and view them with GraphViz">;
 def print_decl_contexts : Flag<["-"], "print-decl-contexts">,
@@ -357,8 +371,6 @@ def arcmt_modify : Flag<["-"], "arcmt-modify">,
 def arcmt_migrate : Flag<["-"], "arcmt-migrate">,
   HelpText<"Apply modifications and produces temporary files that conform to ARC">;
 
-def relocatable_pch : Flag<["-", "--"], "relocatable-pch">,
-  HelpText<"Whether to build a relocatable precompiled header">;
 def print_stats : Flag<["-"], "print-stats">,
   HelpText<"Print performance metrics and statistics">;
 def fdump_record_layouts : Flag<["-"], "fdump-record-layouts">,
@@ -391,8 +403,6 @@ def main_file_name : Separate<["-"], "main-file-name">,
   HelpText<"Main file name to use for debug info">;
 def split_dwarf_file : Separate<["-"], "split-dwarf-file">,
   HelpText<"File name to use for split dwarf debug info output">;
-def fno_signed_char : Flag<["-"], "fno-signed-char">,
-  HelpText<"Char is unsigned">;
 def fno_wchar : Flag<["-"], "fno-wchar">,
   HelpText<"Disable C++ builtin type wchar_t">;
 def fconstant_string_class : Separate<["-"], "fconstant-string-class">,
@@ -404,8 +414,8 @@ def fobjc_runtime_has_weak : Flag<["-"], "fobjc-runtime-has-weak">,
   HelpText<"The target Objective-C runtime supports ARC weak operations">;
 def fobjc_dispatch_method_EQ : Joined<["-"], "fobjc-dispatch-method=">,
   HelpText<"Objective-C dispatch method to use">;
-def fobjc_default_synthesize_properties : Flag<["-"], "fobjc-default-synthesize-properties">,
-  HelpText<"enable the default synthesis of Objective-C properties">;
+def disable_objc_default_synthesize_properties : Flag<["-"], "disable-objc-default-synthesize-properties">,
+  HelpText<"disable the default synthesis of Objective-C properties">;
 def fencode_extended_block_signature : Flag<["-"], "fencode-extended-block-signature">,
   HelpText<"enable extended encoding of block type signature">;
 def pic_level : Separate<["-"], "pic-level">,
@@ -432,8 +442,12 @@ def ftype_visibility : Separate<["-"], "ftype-visibility">,
   HelpText<"Default type visibility">;
 def ftemplate_depth : Separate<["-"], "ftemplate-depth">,
   HelpText<"Maximum depth of recursive template instantiation">;
+def foperator_arrow_depth : Separate<["-"], "foperator-arrow-depth">,
+  HelpText<"Maximum number of 'operator->'s to call for a member access">;
 def fconstexpr_depth : Separate<["-"], "fconstexpr-depth">,
   HelpText<"Maximum depth of recursive constexpr function calls">;
+def fconstexpr_steps : Separate<["-"], "fconstexpr-steps">,
+  HelpText<"Maximum number of steps in constexpr function evaluation">;
 def fbracket_depth : Separate<["-"], "fbracket-depth">,
   HelpText<"Maximum nesting level for parentheses, brackets, and braces">;
 def fconst_strings : Flag<["-"], "fconst-strings">,
@@ -444,6 +458,8 @@ def fno_bitfield_type_align : Flag<["-"], "fno-bitfield-type-align">,
   HelpText<"Ignore bit-field types when aligning structures">;
 def ffake_address_space_map : Flag<["-"], "ffake-address-space-map">,
   HelpText<"Use a fake address space map; OpenCL testing purposes only">;
+def faddress_space_map_mangling_EQ : Joined<["-"], "faddress-space-map-mangling=">, MetaVarName<"<yes|no|target>">,
+  HelpText<"Set the mode for address space map based mangling; OpenCL testing purposes only">;
 def funknown_anytype : Flag<["-"], "funknown-anytype">,
   HelpText<"Enable parser support for the __unknown_anytype type; for testing purposes only">;
 def fdebugger_support : Flag<["-"], "fdebugger-support">,
@@ -456,6 +472,10 @@ def fdeprecated_macro : Flag<["-"], "fdeprecated-macro">,
   HelpText<"Defines the __DEPRECATED macro">;
 def fno_deprecated_macro : Flag<["-"], "fno-deprecated-macro">,
   HelpText<"Undefines the __DEPRECATED macro">;
+def fsized_deallocation : Flag<["-"], "fsized-deallocation">,
+  HelpText<"Enable C++1y sized global deallocation functions">;
+def fobjc_subscripting_legacy_runtime : Flag<["-"], "fobjc-subscripting-legacy-runtime">,
+  HelpText<"Allow Objective-C array and dictionary subscripting in legacy runtime">;
 
 //===----------------------------------------------------------------------===//
 // Header Search Options
@@ -463,9 +483,6 @@ def fno_deprecated_macro : Flag<["-"], "fno-deprecated-macro">,
 
 def nostdsysteminc : Flag<["-"], "nostdsysteminc">,
   HelpText<"Disable standard system #include directories">;
-def fmodule_name : Joined<["-"], "fmodule-name=">, 
-  MetaVarName<"<name>">,
-  HelpText<"Specify the name of the module to build">;           
 def fdisable_module_hash : Flag<["-"], "fdisable-module-hash">,
   HelpText<"Disable the module hash">;
 def c_isystem : JoinedOrSeparate<["-"], "c-isystem">, MetaVarName<"<directory>">,
diff --git a/include/clang/Driver/CLCompatOptions.td b/include/clang/Driver/CLCompatOptions.td
new file mode 100644
index 000000000000..d17a63c62c92
--- /dev/null
+++ b/include/clang/Driver/CLCompatOptions.td
@@ -0,0 +1,255 @@
+//===--- CLCompatOptions.td - Options for clang-cl ------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file defines the options accepted by clang-cl.
+//
+//===----------------------------------------------------------------------===//
+
+def cl_Group : OptionGroup<"<clang-cl options>">,
+  HelpText<"CL.EXE COMPATIBILITY OPTIONS">;
+
+def cl_compile_Group : OptionGroup<"<clang-cl compile-only options>">,
+  Group<cl_Group>;
+
+def cl_ignored_Group : OptionGroup<"<clang-cl ignored options>">,
+  Group<cl_Group>;
+
+class CLFlag<string name> : Option<["/", "-"], name, KIND_FLAG>,
+  Group<cl_Group>, Flags<[CLOption, DriverOption]>;
+
+class CLCompileFlag<string name> : Option<["/", "-"], name, KIND_FLAG>,
+  Group<cl_compile_Group>, Flags<[CLOption, DriverOption]>;
+
+class CLIgnoredFlag<string name> : Option<["/", "-"], name, KIND_FLAG>,
+  Group<cl_ignored_Group>, Flags<[CLOption, DriverOption, HelpHidden]>;
+
+class CLJoined<string name> : Option<["/", "-"], name, KIND_JOINED>,
+  Group<cl_Group>, Flags<[CLOption, DriverOption]>;
+
+class CLCompileJoined<string name> : Option<["/", "-"], name, KIND_JOINED>,
+  Group<cl_compile_Group>, Flags<[CLOption, DriverOption]>;
+
+class CLIgnoredJoined<string name> : Option<["/", "-"], name, KIND_JOINED>,
+  Group<cl_ignored_Group>, Flags<[CLOption, DriverOption, HelpHidden]>;
+
+class CLJoinedOrSeparate<string name> : Option<["/", "-"], name,
+  KIND_JOINED_OR_SEPARATE>, Group<cl_Group>, Flags<[CLOption, DriverOption]>;
+
+class CLCompileJoinedOrSeparate<string name> : Option<["/", "-"], name,
+  KIND_JOINED_OR_SEPARATE>, Group<cl_compile_Group>,
+  Flags<[CLOption, DriverOption]>;
+
+class CLRemainingArgs<string name> : Option<["/", "-"], name,
+  KIND_REMAINING_ARGS>, Group<cl_Group>, Flags<[CLOption, DriverOption]>;
+
+// Aliases:
+// (We don't put any of these in cl_compile_Group as the options they alias are
+// already in the right group.)
+
+def _SLASH_C : CLFlag<"C">, HelpText<"Don't discard comments when preprocessing">,
+  Alias<C>;
+def _SLASH_c : CLFlag<"c">, HelpText<"Compile only">, Alias<c>;
+def _SLASH_D : CLJoinedOrSeparate<"D">, HelpText<"Define macro">,
+  MetaVarName<"<macro[=value]>">, Alias<D>;
+def _SLASH_GR : CLFlag<"GR">, HelpText<"Enable RTTI">, Alias<frtti>;
+def _SLASH_GR_ : CLFlag<"GR-">, HelpText<"Disable RTTI">, Alias<fno_rtti>;
+def _SLASH_GF_ : CLFlag<"GF-">, HelpText<"Disable string pooling">,
+  Alias<fwritable_strings>;
+def _SLASH_help : CLFlag<"help">, Alias<help>,
+  HelpText<"Display available options">;
+def _SLASH_HELP : CLFlag<"HELP">, Alias<help>;
+def _SLASH_I : CLJoinedOrSeparate<"I">,
+  HelpText<"Add directory to include search path">, MetaVarName<"<dir>">,
+  Alias<I>;
+def _SLASH_J : CLFlag<"J">, HelpText<"Make char type unsigned">,
+  Alias<funsigned_char>;
+def _SLASH_O : CLJoined<"O">, HelpText<"Optimization level">,
+  MetaVarName<"<n>">, Alias<O>;
+def _SLASH_Ob0 : CLFlag<"Ob0">, HelpText<"Disable inlining">,
+  Alias<fno_inline>;
+def _SLASH_Od : CLFlag<"Od">, HelpText<"Disable optimization">, Alias<O0>;
+def _SLASH_Oi : CLFlag<"Oi">, HelpText<"Enable use of builtin functions">,
+  Alias<fbuiltin>;
+def _SLASH_Oi_ : CLFlag<"Oi-">, HelpText<"Disable use of builtin functions">,
+  Alias<fno_builtin>;
+def _SLASH_Os : CLFlag<"Os">, HelpText<"Optimize for size">, Alias<O>,
+  AliasArgs<["s"]>;
+def _SLASH_Ot : CLFlag<"Ot">, HelpText<"Optimize for speed">, Alias<O>,
+  AliasArgs<["2"]>;
+def _SLASH_Ox : CLFlag<"Ox">, HelpText<"Maximum optimization">, Alias<O>,
+  AliasArgs<["3"]>;
+def _SLASH_Oy : CLFlag<"Oy">, HelpText<"Enable frame pointer omission">,
+  Alias<fomit_frame_pointer>;
+def _SLASH_Oy_ : CLFlag<"Oy-">, HelpText<"Disable frame pointer omission">,
+  Alias<fno_omit_frame_pointer>;
+def _SLASH_P : CLFlag<"P">, HelpText<"Only run the preprocessor">, Alias<E>;
+def _SLASH_QUESTION : CLFlag<"?">, Alias<help>,
+  HelpText<"Display available options">;
+def _SLASH_showIncludes : CLFlag<"showIncludes">,
+  HelpText<"Print info about included files to stderr">,
+  Alias<show_includes>;
+def _SLASH_U : CLJoinedOrSeparate<"U">, HelpText<"Undefine macro">,
+  MetaVarName<"<macro>">, Alias<U>;
+def _SLASH_W0 : CLFlag<"W0">, HelpText<"Disable all warnings">, Alias<w>;
+def _SLASH_W1 : CLFlag<"W1">, HelpText<"Enable -Wall">, Alias<Wall>;
+def _SLASH_W2 : CLFlag<"W2">, HelpText<"Enable -Wall">, Alias<Wall>;
+def _SLASH_W3 : CLFlag<"W3">, HelpText<"Enable -Wall">, Alias<Wall>;
+def _SLASH_W4 : CLFlag<"W4">, HelpText<"Enable -Wall">, Alias<Wall>;
+def _SLASH_Wall : CLFlag<"Wall">, HelpText<"Enable -Wall">, Alias<Wall>;
+def _SLASH_WX : CLFlag<"WX">, HelpText<"Treat warnings as errors">,
+  Alias<W_Joined>, AliasArgs<["error"]>;
+def _SLASH_WX_ : CLFlag<"WX-">, HelpText<"Do not treat warnings as errors">,
+  Alias<W_Joined>, AliasArgs<["no-error"]>;
+def _SLASH_w_flag : CLFlag<"w">, HelpText<"Disable all warnings">, Alias<w>;
+def _SLASH_Zs : CLFlag<"Zs">, HelpText<"Syntax-check only">,
+  Alias<fsyntax_only>;
+
+
+// Non-aliases:
+
+def _SLASH_M_Group : OptionGroup<"</M group>">, Group<cl_compile_Group>;
+
+def _SLASH_FA : CLFlag<"FA">,
+  HelpText<"Output assembly code file during compilation">;
+def _SLASH_Fa : CLJoined<"Fa">,
+  HelpText<"Output assembly code to this file during compilation">,
+  MetaVarName<"<file or directory>">;
+def _SLASH_fallback : CLCompileFlag<"fallback">,
+  HelpText<"Fall back to cl.exe if clang-cl fails to compile">;
+def _SLASH_FI : CLJoinedOrSeparate<"FI">,
+  HelpText<"Include file before parsing">, Alias<include_>;
+def _SLASH_Fe : CLJoined<"Fe">,
+  HelpText<"Set output executable file or directory (ends in / or \\)">,
+  MetaVarName<"<file or directory>">;
+def _SLASH_Fo : CLCompileJoined<"Fo">,
+  HelpText<"Set output object file, or directory (ends in / or \\)">,
+  MetaVarName<"<file or directory>">;
+def _SLASH_LD : CLFlag<"LD">, HelpText<"Create DLL">;
+def _SLASH_LDd : CLFlag<"LDd">, HelpText<"Create debug DLL">;
+def _SLASH_link : CLRemainingArgs<"link">,
+  HelpText<"Forward options to the linker">, MetaVarName<"<options>">;
+def _SLASH_MD : Option<["/", "-"], "MD", KIND_FLAG>, Group<_SLASH_M_Group>,
+  Flags<[CLOption, DriverOption]>, HelpText<"Use DLL run-time">;
+def _SLASH_MDd : Option<["/", "-"], "MDd", KIND_FLAG>, Group<_SLASH_M_Group>,
+  Flags<[CLOption, DriverOption]>, HelpText<"Use DLL debug run-time">;
+def _SLASH_MT : Option<["/", "-"], "MT", KIND_FLAG>, Group<_SLASH_M_Group>,
+  Flags<[CLOption, DriverOption]>, HelpText<"Use static run-time">;
+def _SLASH_MTd : Option<["/", "-"], "MTd", KIND_FLAG>, Group<_SLASH_M_Group>,
+  Flags<[CLOption, DriverOption]>, HelpText<"Use static debug run-time">;
+def _SLASH_Tc : CLCompileJoinedOrSeparate<"Tc">,
+  HelpText<"Specify a C source file">, MetaVarName<"<filename>">;
+def _SLASH_TC : CLCompileFlag<"TC">, HelpText<"Treat all source files as C">;
+def _SLASH_Tp : CLCompileJoinedOrSeparate<"Tp">,
+  HelpText<"Specify a C++ source file">, MetaVarName<"<filename>">;
+def _SLASH_TP : CLCompileFlag<"TP">, HelpText<"Treat all source files as C++">;
+
+
+// Ignored:
+
+def _SLASH_analyze_ : CLIgnoredFlag<"analyze-">;
+def _SLASH_errorReport : CLIgnoredJoined<"errorReport">;
+def _SLASH_FS : CLIgnoredFlag<"FS">, HelpText<"Force synchronous PDB writes">;
+def _SLASH_GF : CLIgnoredFlag<"GF">;
+def _SLASH_GS_ : CLIgnoredFlag<"GS-">;
+def _SLASH_kernel_ : CLIgnoredFlag<"kernel-">;
+def _SLASH_nologo : CLIgnoredFlag<"nologo">;
+def _SLASH_Ob1 : CLIgnoredFlag<"Ob1">;
+def _SLASH_Ob2 : CLIgnoredFlag<"Ob2">;
+def _SLASH_RTC : CLIgnoredJoined<"RTC">;
+def _SLASH_sdl : CLIgnoredFlag<"sdl">;
+def _SLASH_sdl_ : CLIgnoredFlag<"sdl-">;
+def _SLASH_vmg : CLIgnoredFlag<"vmg">;
+def _SLASH_w : CLIgnoredJoined<"w">;
+def _SLASH_Zc_forScope : CLIgnoredFlag<"Zc:forScope">;
+def _SLASH_Zc_wchar_t : CLIgnoredFlag<"Zc:wchar_t">;
+def _SLASH_Zm : CLIgnoredJoined<"Zm">;
+
+
+// Unsupported:
+
+def _SLASH_AI : CLJoined<"AI">;
+def _SLASH_arch : CLJoined<"arch:">;
+def _SLASH_bigobj : CLFlag<"bigobj">;
+def _SLASH_clr : CLJoined<"clr">;
+def _SLASH_doc : CLJoined<"doc">;
+def _SLASH_E : CLFlag<"E">;
+def _SLASH_EH : CLJoined<"EH">;
+def _SLASH_EP : CLFlag<"EP">;
+def _SLASH_FA_joined : CLJoined<"FA">;
+def _SLASH_favor : CLJoined<"favor">;
+def _SLASH_FC : CLFlag<"FC">;
+def _SLASH_F : CLFlag<"F">;
+def _SLASH_Fd : CLJoined<"Fd">;
+def _SLASH_Fi : CLJoined<"Fi">;
+def _SLASH_Fm : CLJoined<"Fm">;
+def _SLASH_fp : CLJoined<"fp">;
+def _SLASH_Fp : CLJoined<"Fp">;
+def _SLASH_Fr : CLJoined<"Fr">;
+def _SLASH_FR : CLJoined<"FR">;
+def _SLASH_FU : CLJoinedOrSeparate<"FU">;
+def _SLASH_Fx : CLFlag<"Fx">;
+def _SLASH_G1 : CLFlag<"G1">;
+def _SLASH_G2 : CLFlag<"G2">;
+def _SLASH_GA : CLFlag<"GA">;
+def _SLASH_Gd : CLFlag<"Gd">;
+def _SLASH_Ge : CLFlag<"Ge">;
+def _SLASH_Gh : CLFlag<"Gh">;
+def _SLASH_GH : CLFlag<"GH">;
+def _SLASH_GL : CLFlag<"GL">;
+def _SLASH_GL_ : CLFlag<"GL-">;
+def _SLASH_Gm : CLFlag<"Gm">;
+def _SLASH_Gm_ : CLFlag<"Gm-">;
+def _SLASH_Gr : CLFlag<"Gr">;
+def _SLASH_GS : CLFlag<"GS">;
+def _SLASH_Gs : CLJoined<"Gs">;
+def _SLASH_GT : CLFlag<"GT">;
+def _SLASH_GX : CLFlag<"GX">;
+def _SLASH_Gy : CLFlag<"Gy">;
+def _SLASH_Gy_ : CLFlag<"Gy-">;
+def _SLASH_Gz : CLFlag<"Gz">;
+def _SLASH_GZ : CLFlag<"GZ">;
+def _SLASH_H : CLFlag<"H">;
+def _SLASH_homeparams : CLFlag<"homeparams">;
+def _SLASH_hotpatch : CLFlag<"hotpatch">;
+def _SLASH_kernel : CLFlag<"kernel">;
+def _SLASH_LN : CLFlag<"LN">;
+def _SLASH_MP : CLJoined<"MP">;
+def _SLASH_o : CLJoinedOrSeparate<"o">;
+def _SLASH_openmp : CLFlag<"openmp">;
+def _SLASH_Qfast_transcendentals : CLFlag<"Qfast_transcendentals">;
+def _SLASH_QIfist : CLFlag<"QIfist">;
+def _SLASH_Qimprecise_fwaits : CLFlag<"Qimprecise_fwaits">;
+def _SLASH_Qpar : CLFlag<"Qpar">;
+def _SLASH_Qvec_report : CLJoined<"Qvec-report">;
+def _SLASH_u : CLFlag<"u">;
+def _SLASH_V : CLFlag<"V">;
+def _SLASH_vd : CLJoined<"vd">;
+def _SLASH_vmb : CLFlag<"vmb">;
+def _SLASH_vmm : CLFlag<"vmm">;
+def _SLASH_vms : CLFlag<"vms">;
+def _SLASH_vmv : CLFlag<"vmv">;
+def _SLASH_volatile : CLFlag<"volatile">;
+def _SLASH_WL : CLFlag<"WL">;
+def _SLASH_Wp64 : CLFlag<"Wp64">;
+def _SLASH_X : CLFlag<"X">;
+def _SLASH_Yc : CLJoined<"Yc">;
+def _SLASH_Y_ : CLFlag<"Y-">;
+def _SLASH_Yd : CLFlag<"Yd">;
+def _SLASH_Yl : CLJoined<"Yl">;
+def _SLASH_Yu : CLJoined<"Yu">;
+def _SLASH_Z7 : CLFlag<"Z7">;
+def _SLASH_Za : CLFlag<"Za">;
+def _SLASH_Zc : CLJoined<"Zc:">;
+def _SLASH_Ze : CLFlag<"Ze">;
+def _SLASH_Zg : CLFlag<"Zg">;
+def _SLASH_Zi : CLFlag<"Zi">;
+def _SLASH_ZI : CLFlag<"ZI">;
+def _SLASH_Zl : CLFlag<"Zl">;
+def _SLASH_Zp : CLFlag<"Zp">;
+def _SLASH_ZW : CLJoined<"ZW">;
diff --git a/include/clang/Driver/CMakeLists.txt b/include/clang/Driver/CMakeLists.txt
index 1277d51edb82..5961cac20ccf 100644
--- a/include/clang/Driver/CMakeLists.txt
+++ b/include/clang/Driver/CMakeLists.txt
@@ -1,7 +1,7 @@
-clang_tablegen(Options.inc -gen-opt-parser-defs
-  SOURCE Options.td
-  TARGET ClangDriverOptions)
+set(LLVM_TARGET_DEFINITIONS Options.td)
+tablegen(LLVM Options.inc -gen-opt-parser-defs)
+add_public_tablegen_target(ClangDriverOptions)
 
-clang_tablegen(CC1AsOptions.inc -gen-opt-parser-defs
-  SOURCE CC1AsOptions.td
-  TARGET ClangCC1AsOptions)
+set(LLVM_TARGET_DEFINITIONS CC1AsOptions.td)
+tablegen(LLVM CC1AsOptions.inc -gen-opt-parser-defs)
+add_public_tablegen_target(ClangCC1AsOptions)
diff --git a/include/clang/Driver/Compilation.h b/include/clang/Driver/Compilation.h
index 15c5e40e495a..3493e4f1509b 100644
--- a/include/clang/Driver/Compilation.h
+++ b/include/clang/Driver/Compilation.h
@@ -15,11 +15,16 @@
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/Support/Path.h"
 
+namespace llvm {
+namespace opt {
+  class DerivedArgList;
+  class InputArgList;
+}
+}
+
 namespace clang {
 namespace driver {
-  class DerivedArgList;
   class Driver;
-  class InputArgList;
   class JobAction;
   class JobList;
   class ToolChain;
@@ -34,11 +39,11 @@ class Compilation {
   const ToolChain &DefaultToolChain;
 
   /// The original (untranslated) input argument list.
-  InputArgList *Args;
+  llvm::opt::InputArgList *Args;
 
   /// The driver translated arguments. Note that toolchains may perform their
   /// own argument translation.
-  DerivedArgList *TranslatedArgs;
+  llvm::opt::DerivedArgList *TranslatedArgs;
 
   /// The list of actions.
   ActionList Actions;
@@ -48,11 +53,11 @@ class Compilation {
 
   /// Cache of translated arguments for a particular tool chain and bound
   /// architecture.
-  llvm::DenseMap<std::pair<const ToolChain*, const char*>,
-                 DerivedArgList*> TCArgs;
+  llvm::DenseMap<std::pair<const ToolChain *, const char *>,
+                 llvm::opt::DerivedArgList *> TCArgs;
 
   /// Temporary files which should be removed on exit.
-  ArgStringList TempFiles;
+  llvm::opt::ArgStringList TempFiles;
 
   /// Result files which should be removed on failure.
   ArgStringMap ResultFiles;
@@ -62,22 +67,23 @@ class Compilation {
   ArgStringMap FailureResultFiles;
 
   /// Redirection for stdout, stderr, etc.
-  const llvm::sys::Path **Redirects;
+  const StringRef **Redirects;
 
 public:
   Compilation(const Driver &D, const ToolChain &DefaultToolChain,
-              InputArgList *Args, DerivedArgList *TranslatedArgs);
+              llvm::opt::InputArgList *Args,
+              llvm::opt::DerivedArgList *TranslatedArgs);
   ~Compilation();
 
   const Driver &getDriver() const { return TheDriver; }
 
   const ToolChain &getDefaultToolChain() const { return DefaultToolChain; }
 
-  const InputArgList &getInputArgs() const { return *Args; }
+  const llvm::opt::InputArgList &getInputArgs() const { return *Args; }
 
-  const DerivedArgList &getArgs() const { return *TranslatedArgs; }
+  const llvm::opt::DerivedArgList &getArgs() const { return *TranslatedArgs; }
 
-  DerivedArgList &getArgs() { return *TranslatedArgs; }
+  llvm::opt::DerivedArgList &getArgs() { return *TranslatedArgs; }
 
   ActionList &getActions() { return Actions; }
   const ActionList &getActions() const { return Actions; }
@@ -87,7 +93,7 @@ public:
 
   void addCommand(Command *C) { Jobs.addJob(C); }
 
-  const ArgStringList &getTempFiles() const { return TempFiles; }
+  const llvm::opt::ArgStringList &getTempFiles() const { return TempFiles; }
 
   const ArgStringMap &getResultFiles() const { return ResultFiles; }
 
@@ -102,8 +108,8 @@ public:
   /// tool chain \p TC (or the default tool chain, if TC is not specified).
   ///
   /// \param BoundArch - The bound architecture name, or 0.
-  const DerivedArgList &getArgsForToolChain(const ToolChain *TC,
-                                            const char *BoundArch);
+  const llvm::opt::DerivedArgList &getArgsForToolChain(const ToolChain *TC,
+                                                       const char *BoundArch);
 
   /// addTempFile - Add a file to remove on exit, and returns its
   /// argument.
@@ -136,7 +142,7 @@ public:
   ///
   /// \param IssueErrors - Report failures as errors.
   /// \return Whether all files were removed successfully.
-  bool CleanupFileList(const ArgStringList &Files,
+  bool CleanupFileList(const llvm::opt::ArgStringList &Files,
                        bool IssueErrors = false) const;
 
   /// CleanupFileMap - Remove the files in the given map.
@@ -149,23 +155,6 @@ public:
                       const JobAction *JA,
                       bool IssueErrors = false) const;
 
-  /// PrintJob - Print one job in -### format.
-  ///
-  /// \param OS - The stream to print on.
-  /// \param J - The job to print.
-  /// \param Terminator - A string to print at the end of the line.
-  /// \param Quote - Should separate arguments be quoted.
-  void PrintJob(raw_ostream &OS, const Job &J,
-                const char *Terminator, bool Quote) const;
-
-  /// PrintDiagnosticJob - Print one job in -### format, but with the 
-  /// superfluous options removed, which are not necessary for 
-  /// reproducing the crash.
-  ///
-  /// \param OS - The stream to print on.
-  /// \param J - The job to print.
-  void PrintDiagnosticJob(raw_ostream &OS, const Job &J) const;
-
   /// ExecuteCommand - Execute an actual command.
   ///
   /// \param FailingCommand - For non-zero results, this will be set to the
diff --git a/include/clang/Driver/Driver.h b/include/clang/Driver/Driver.h
index d9053d1972aa..867444ea4e13 100644
--- a/include/clang/Driver/Driver.h
+++ b/include/clang/Driver/Driver.h
@@ -15,6 +15,7 @@
 #include "clang/Driver/Phases.h"
 #include "clang/Driver/Types.h"
 #include "clang/Driver/Util.h"
+#include "llvm/ADT/OwningPtr.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/Triple.h"
@@ -24,27 +25,41 @@
 #include <set>
 #include <string>
 
+namespace llvm {
+namespace opt {
+  class Arg;
+  class ArgList;
+  class DerivedArgList;
+  class InputArgList;
+  class OptTable;
+}
+}
+
 namespace clang {
 namespace driver {
+
   class Action;
-  class Arg;
-  class ArgList;
   class Command;
   class Compilation;
-  class DerivedArgList;
-  class InputArgList;
   class InputInfo;
   class JobAction;
-  class OptTable;
+  class SanitizerArgs;
   class ToolChain;
 
 /// Driver - Encapsulate logic for constructing compilation processes
 /// from a set of gcc-driver-like command line arguments.
 class Driver {
-  OptTable *Opts;
+  llvm::opt::OptTable *Opts;
 
   DiagnosticsEngine &Diags;
 
+  enum DriverMode {
+    GCCMode,
+    GXXMode,
+    CPPMode,
+    CLMode
+  } Mode;
+
 public:
   // Diag - Forwarding function for diagnostics.
   DiagnosticBuilder Diag(unsigned DiagID) const {
@@ -79,6 +94,9 @@ public:
   /// sysroot, if present
   std::string SysRoot;
 
+  /// Dynamic loader prefix, if present
+  std::string DyldPrefix;
+
   /// If the standard library is used
   bool UseStdLib;
 
@@ -104,16 +122,17 @@ public:
   const char *CCLogDiagnosticsFilename;
 
   /// A list of inputs and their types for the given arguments.
-  typedef SmallVector<std::pair<types::ID, const Arg*>, 16> InputList;
+  typedef SmallVector<std::pair<types::ID, const llvm::opt::Arg *>, 16>
+      InputList;
 
   /// Whether the driver should follow g++ like behavior.
-  unsigned CCCIsCXX : 1;
+  bool CCCIsCXX() const { return Mode == GXXMode; }
 
   /// Whether the driver is just the preprocessor.
-  unsigned CCCIsCPP : 1;
+  bool CCCIsCPP() const { return Mode == CPPMode; }
 
-  /// Echo commands while executing (in -v style).
-  unsigned CCCEcho : 1;
+  /// Whether the driver should follow cl.exe like behavior.
+  bool IsCLMode() const { return Mode == CLMode; }
 
   /// Only print tool bindings, don't build any jobs.
   unsigned CCCPrintBindings : 1;
@@ -163,12 +182,13 @@ private:
 private:
   /// TranslateInputArgs - Create a new derived argument list from the input
   /// arguments, after applying the standard argument translations.
-  DerivedArgList *TranslateInputArgs(const InputArgList &Args) const;
+  llvm::opt::DerivedArgList *
+  TranslateInputArgs(const llvm::opt::InputArgList &Args) const;
 
   // getFinalPhase - Determine which compilation mode we are in and record 
   // which option we used to determine the final phase.
-  phases::ID getFinalPhase(const DerivedArgList &DAL, Arg **FinalPhaseArg = 0)
-    const;
+  phases::ID getFinalPhase(const llvm::opt::DerivedArgList &DAL,
+                           llvm::opt::Arg **FinalPhaseArg = 0) const;
 
 public:
   Driver(StringRef _ClangExecutable,
@@ -183,8 +203,7 @@ public:
   /// Name to use when invoking gcc/g++.
   const std::string &getCCCGenericGCCName() const { return CCCGenericGCCName; }
 
-
-  const OptTable &getOpts() const { return *Opts; }
+  const llvm::opt::OptTable &getOpts() const { return *Opts; }
 
   const DiagnosticsEngine &getDiags() const { return Diags; }
 
@@ -226,9 +245,12 @@ public:
   /// @name Driver Steps
   /// @{
 
+  /// ParseDriverMode - Look for and handle the driver mode option in Args.
+  void ParseDriverMode(ArrayRef<const char *> Args);
+
   /// ParseArgStrings - Parse the given list of strings into an
   /// ArgList.
-  InputArgList *ParseArgStrings(ArrayRef<const char *> Args);
+  llvm::opt::InputArgList *ParseArgStrings(ArrayRef<const char *> Args);
 
   /// BuildInputs - Construct the list of inputs and their types from 
   /// the given arguments.
@@ -237,7 +259,7 @@ public:
   /// \param Args - The input arguments.
   /// \param Inputs - The list to store the resulting compilation 
   /// inputs onto.
-  void BuildInputs(const ToolChain &TC, const DerivedArgList &Args,
+  void BuildInputs(const ToolChain &TC, const llvm::opt::DerivedArgList &Args,
                    InputList &Inputs) const;
 
   /// BuildActions - Construct the list of actions to perform for the
@@ -246,7 +268,7 @@ public:
   /// \param TC - The default host tool chain.
   /// \param Args - The input arguments.
   /// \param Actions - The list to store the resulting actions onto.
-  void BuildActions(const ToolChain &TC, const DerivedArgList &Args,
+  void BuildActions(const ToolChain &TC, llvm::opt::DerivedArgList &Args,
                     const InputList &Inputs, ActionList &Actions) const;
 
   /// BuildUniversalActions - Construct the list of actions to perform
@@ -255,7 +277,8 @@ public:
   /// \param TC - The default host tool chain.
   /// \param Args - The input arguments.
   /// \param Actions - The list to store the resulting actions onto.
-  void BuildUniversalActions(const ToolChain &TC, const DerivedArgList &Args,
+  void BuildUniversalActions(const ToolChain &TC,
+                             llvm::opt::DerivedArgList &Args,
                              const InputList &BAInputs,
                              ActionList &Actions) const;
 
@@ -292,9 +315,6 @@ public:
   /// \param ShowHidden - Show hidden options.
   void PrintHelp(bool ShowHidden) const;
 
-  /// PrintOptions - Print the list of arguments.
-  void PrintOptions(const ArgList &Args) const;
-
   /// PrintVersion - Print the driver version.
   void PrintVersion(const Compilation &C, raw_ostream &OS) const;
 
@@ -324,10 +344,9 @@ public:
   /// ConstructAction - Construct the appropriate action to do for
   /// \p Phase on the \p Input, taking in to account arguments
   /// like -fsyntax-only or --analyze.
-  Action *ConstructPhaseAction(const ArgList &Args, phases::ID Phase,
+  Action *ConstructPhaseAction(const llvm::opt::ArgList &Args, phases::ID Phase,
                                Action *Input) const;
 
-
   /// BuildJobsForAction - Construct the jobs to perform for the
   /// action \p A.
   void BuildJobsForAction(Compilation &C,
@@ -367,18 +386,22 @@ public:
   /// handle this action.
   bool ShouldUseClangCompiler(const JobAction &JA) const;
 
-  bool IsUsingLTO(const ArgList &Args) const;
+  bool IsUsingLTO(const llvm::opt::ArgList &Args) const;
 
 private:
   /// \brief Retrieves a ToolChain for a particular target triple.
   ///
   /// Will cache ToolChains for the life of the driver object, and create them
   /// on-demand.
-  const ToolChain &getToolChain(const ArgList &Args,
+  const ToolChain &getToolChain(const llvm::opt::ArgList &Args,
                                 StringRef DarwinArchName = "") const;
 
   /// @}
 
+  /// \brief Get bitmasks for which option flags to include and exclude based on
+  /// the driver mode.
+  std::pair<unsigned, unsigned> getIncludeExcludeOptionFlagMasks() const;
+
 public:
   /// GetReleaseVersion - Parse (([0-9]+)(.([0-9]+)(.([0-9]+)?))?)? and
   /// return the grouped values as integers. Numbers which are not
diff --git a/include/clang/Driver/DriverDiagnostic.h b/include/clang/Driver/DriverDiagnostic.h
index ea7b52f9cb72..f3c33aeccb42 100644
--- a/include/clang/Driver/DriverDiagnostic.h
+++ b/include/clang/Driver/DriverDiagnostic.h
@@ -16,7 +16,7 @@ namespace clang {
   namespace diag {
     enum {
 #define DIAG(ENUM,FLAGS,DEFAULT_MAPPING,DESC,GROUP,\
-             SFINAE,ACCESS,NOWERROR,SHOWINSYSHEADER,CATEGORY) ENUM,
+             SFINAE,NOWERROR,SHOWINSYSHEADER,CATEGORY) ENUM,
 #define DRIVERSTART
 #include "clang/Basic/DiagnosticDriverKinds.inc"
 #undef DIAG
diff --git a/include/clang/Driver/Job.h b/include/clang/Driver/Job.h
index 045b5d89ded3..1dd49a792356 100644
--- a/include/clang/Driver/Job.h
+++ b/include/clang/Driver/Job.h
@@ -11,18 +11,28 @@
 #define CLANG_DRIVER_JOB_H_
 
 #include "clang/Basic/LLVM.h"
-#include "clang/Driver/Util.h"
+#include "llvm/ADT/OwningPtr.h"
 #include "llvm/ADT/SmallVector.h"
+#include "llvm/Option/Option.h"
+
+namespace llvm {
+  class raw_ostream;
+}
 
 namespace clang {
 namespace driver {
+class Action;
 class Command;
 class Tool;
 
+// Re-export this as clang::driver::ArgStringList.
+using llvm::opt::ArgStringList;
+
 class Job {
 public:
   enum JobClass {
     CommandClass,
+    FallbackCommandClass,
     JobListClass
   };
 
@@ -36,16 +46,19 @@ public:
 
   JobClass getKind() const { return Kind; }
 
-  /// addCommand - Append a command to the current job, which must be
-  /// either a piped job or a job list.
-  void addCommand(Command *C);
+  /// Print - Print this Job in -### format.
+  ///
+  /// \param OS - The stream to print on.
+  /// \param Terminator - A string to print at the end of the line.
+  /// \param Quote - Should separate arguments be quoted.
+  /// \param CrashReport - Whether to print for inclusion in a crash report.
+  virtual void Print(llvm::raw_ostream &OS, const char *Terminator,
+                     bool Quote, bool CrashReport = false) const = 0;
 };
 
-  /// Command - An executable path/name and argument vector to
-  /// execute.
+/// Command - An executable path/name and argument vector to
+/// execute.
 class Command : public Job {
-  virtual void anchor();
-
   /// Source - The action which caused the creation of this job.
   const Action &Source;
 
@@ -57,11 +70,17 @@ class Command : public Job {
 
   /// The list of program arguments (not including the implicit first
   /// argument, which will be the executable).
-  ArgStringList Arguments;
+  llvm::opt::ArgStringList Arguments;
 
 public:
   Command(const Action &_Source, const Tool &_Creator, const char *_Executable,
-          const ArgStringList &_Arguments);
+          const llvm::opt::ArgStringList &_Arguments);
+
+  virtual void Print(llvm::raw_ostream &OS, const char *Terminator,
+                     bool Quote, bool CrashReport = false) const;
+
+  virtual int Execute(const StringRef **Redirects, std::string *ErrMsg,
+                      bool *ExecutionFailed) const;
 
   /// getSource - Return the Action which caused the creation of this job.
   const Action &getSource() const { return Source; }
@@ -69,16 +88,37 @@ public:
   /// getCreator - Return the Tool which caused the creation of this job.
   const Tool &getCreator() const { return Creator; }
 
-  const char *getExecutable() const { return Executable; }
+  const llvm::opt::ArgStringList &getArguments() const { return Arguments; }
 
-  const ArgStringList &getArguments() const { return Arguments; }
+  static bool classof(const Job *J) {
+    return J->getKind() == CommandClass ||
+           J->getKind() == FallbackCommandClass;
+  }
+};
+
+/// Like Command, but with a fallback which is executed in case
+/// the primary command crashes.
+class FallbackCommand : public Command {
+public:
+  FallbackCommand(const Action &Source_, const Tool &Creator_,
+                  const char *Executable_, const ArgStringList &Arguments_,
+                  Command *Fallback_);
+
+  virtual void Print(llvm::raw_ostream &OS, const char *Terminator,
+                     bool Quote, bool CrashReport = false) const;
+
+  virtual int Execute(const StringRef **Redirects, std::string *ErrMsg,
+                      bool *ExecutionFailed) const;
 
   static bool classof(const Job *J) {
-    return J->getKind() == CommandClass;
+    return J->getKind() == FallbackCommandClass;
   }
+
+private:
+  OwningPtr<Command> Fallback;
 };
 
-  /// JobList - A sequence of jobs to perform.
+/// JobList - A sequence of jobs to perform.
 class JobList : public Job {
 public:
   typedef SmallVector<Job*, 4> list_type;
@@ -93,6 +133,9 @@ public:
   JobList();
   virtual ~JobList();
 
+  virtual void Print(llvm::raw_ostream &OS, const char *Terminator,
+                     bool Quote, bool CrashReport = false) const;
+
   /// Add a job to the list (taking ownership).
   void addJob(Job *J) { Jobs.push_back(J); }
 
diff --git a/include/clang/Driver/Makefile b/include/clang/Driver/Makefile
index 7d066c77b377..77cf6ff8d938 100644
--- a/include/clang/Driver/Makefile
+++ b/include/clang/Driver/Makefile
@@ -5,10 +5,10 @@ TABLEGEN_INC_FILES_COMMON = 1
 
 include $(CLANG_LEVEL)/Makefile
 
-$(ObjDir)/Options.inc.tmp : Options.td CC1Options.td OptParser.td $(CLANG_TBLGEN) $(ObjDir)/.dir
+$(ObjDir)/Options.inc.tmp : Options.td CC1Options.td CLCompatOptions.td $(LLVM_TBLGEN) $(ObjDir)/.dir
 	$(Echo) "Building Clang Driver Option tables with tblgen"
-	$(Verb) $(ClangTableGen) -gen-opt-parser-defs -o $(call SYSPATH, $@) $<
+	$(Verb) $(LLVMTableGen) -gen-opt-parser-defs -o $(call SYSPATH, $@) $<
 
-$(ObjDir)/CC1AsOptions.inc.tmp : CC1AsOptions.td OptParser.td $(CLANG_TBLGEN) $(ObjDir)/.dir
+$(ObjDir)/CC1AsOptions.inc.tmp : CC1AsOptions.td $(LLVM_TBLGEN) $(ObjDir)/.dir
 	$(Echo) "Building Clang CC1 Assembler Option tables with tblgen"
-	$(Verb) $(ClangTableGen) -gen-opt-parser-defs -o $(call SYSPATH, $@) $<
+	$(Verb) $(LLVMTableGen) -gen-opt-parser-defs -o $(call SYSPATH, $@) $<
diff --git a/include/clang/Driver/OptParser.td b/include/clang/Driver/OptParser.td
deleted file mode 100644
index d16a2a779324..000000000000
--- a/include/clang/Driver/OptParser.td
+++ /dev/null
@@ -1,152 +0,0 @@
-//===--- OptParser.td - Common Option Parsing Interfaces ------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-//  This file defines the common interfaces used by the option parsing TableGen
-//  backend.
-//
-//===----------------------------------------------------------------------===//
-
-// Define the kinds of options.
-
-class OptionKind<string name, int predecence = 0, bit sentinel = 0> {
-  string Name = name;
-  // The kind precedence, kinds with lower precedence are matched first.
-  int Precedence = predecence;
-  // Indicate a sentinel option.
-  bit Sentinel = sentinel;
-}
-
-// An option group.
-def KIND_GROUP : OptionKind<"Group">;
-// The input option kind.
-def KIND_INPUT : OptionKind<"Input", 1, 1>;
-// The unknown option kind.
-def KIND_UNKNOWN : OptionKind<"Unknown", 2, 1>;
-// A flag with no values.
-def KIND_FLAG : OptionKind<"Flag">;
-// An option which prefixes its (single) value.
-def KIND_JOINED : OptionKind<"Joined", 1>;
-// An option which is followed by its value.
-def KIND_SEPARATE : OptionKind<"Separate">;
-// An option followed by its values, which are separated by commas.
-def KIND_COMMAJOINED : OptionKind<"CommaJoined">;
-// An option which is which takes multiple (separate) arguments.
-def KIND_MULTIARG : OptionKind<"MultiArg">;
-// An option which is either joined to its (non-empty) value, or followed by its
-// value.
-def KIND_JOINED_OR_SEPARATE : OptionKind<"JoinedOrSeparate">;
-// An option which is both joined to its (first) value, and followed by its
-// (second) value.
-def KIND_JOINED_AND_SEPARATE : OptionKind<"JoinedAndSeparate">;
-
-// Define the option flags.
-
-class OptionFlag {}
-
-// DriverOption - The option is a "driver" option, and should not be forwarded
-// to gcc.
-def DriverOption : OptionFlag;
-
-// LinkerInput - The option is a linker input.
-def LinkerInput : OptionFlag;
-
-// NoArgumentUnused - Don't report argument unused warnings for this option; this
-// is useful for options like -static or -dynamic which a user may always end up
-// passing, even if the platform defaults to (or only supports) that option.
-def NoArgumentUnused : OptionFlag;
-
-// RenderAsInput - The option should not render the name when rendered as an
-// input (i.e., the option is rendered as values).
-def RenderAsInput : OptionFlag;
-
-// RenderJoined - The option should be rendered joined, even if separate (only
-// sensible on single value separate options).
-def RenderJoined : OptionFlag;
-
-// RenderSeparate - The option should be rendered separately, even if joined
-// (only sensible on joined options).
-def RenderSeparate : OptionFlag;
-
-// Unsupported - The option is unsupported, and the driver will reject command
-// lines that use it.
-def Unsupported : OptionFlag;
-
-// HelpHidden - The option should not be displayed in --help, even if it has
-// help text. Clients *can* use this in conjunction with the OptTable::PrintHelp
-// arguments to implement hidden help groups.
-def HelpHidden : OptionFlag;
-
-// NoForward - The option should not be implicitly forwarded to other tools.
-def NoForward : OptionFlag;
-
-// CC1Option - This option should be accepted by clang -cc1.
-def CC1Option : OptionFlag;
-
-// NoDriverOption - This option should not be accepted by the driver.
-def NoDriverOption : OptionFlag;
-
-// Define the option group class.
-
-class OptionGroup<string name> {
-  string EnumName = ?; // Uses the def name if undefined.
-  string Name = name;
-  string HelpText = ?;
-  OptionGroup Group = ?;
-}
-
-// Define the option class.
-
-class Option<list<string> prefixes, string name, OptionKind kind> {
-  string EnumName = ?; // Uses the def name if undefined.
-  list<string> Prefixes = prefixes;
-  string Name = name;
-  OptionKind Kind = kind;
-  // Used by MultiArg option kind.
-  int NumArgs = 0;
-  string HelpText = ?;
-  string MetaVarName = ?;
-  list<OptionFlag> Flags = [];
-  OptionGroup Group = ?;
-  Option Alias = ?;
-}
-
-// Helpers for defining options.
-
-class Flag<list<string> prefixes, string name>
-  : Option<prefixes, name, KIND_FLAG>;
-class Joined<list<string> prefixes, string name>
-  : Option<prefixes, name, KIND_JOINED>;
-class Separate<list<string> prefixes, string name>
-  : Option<prefixes, name, KIND_SEPARATE>;
-class CommaJoined<list<string> prefixes, string name>
-  : Option<prefixes, name, KIND_COMMAJOINED>;
-class MultiArg<list<string> prefixes, string name, int numargs>
-  : Option<prefixes, name, KIND_MULTIARG> {
-  int NumArgs = numargs;
-}
-class JoinedOrSeparate<list<string> prefixes, string name>
-  : Option<prefixes, name, KIND_JOINED_OR_SEPARATE>;
-class JoinedAndSeparate<list<string> prefixes, string name>
-  : Option<prefixes, name, KIND_JOINED_AND_SEPARATE>;
-
-// Mix-ins for adding optional attributes.
-
-class Alias<Option alias> { Option Alias = alias; }
-class EnumName<string name> { string EnumName = name; }
-class Flags<list<OptionFlag> flags> { list<OptionFlag> Flags = flags; }
-class Group<OptionGroup group> { OptionGroup Group = group; }
-class HelpText<string text> { string HelpText = text; }
-class MetaVarName<string name> { string MetaVarName = name; }
-
-// Predefined options.
-
-// FIXME: Have generator validate that these appear in correct position (and
-// aren't duplicated).
-def INPUT : Option<[], "<input>", KIND_INPUT>, Flags<[DriverOption,CC1Option]>;
-def UNKNOWN : Option<[], "<unknown>", KIND_UNKNOWN>;
diff --git a/include/clang/Driver/OptSpecifier.h b/include/clang/Driver/OptSpecifier.h
deleted file mode 100644
index e683ef325b8e..000000000000
--- a/include/clang/Driver/OptSpecifier.h
+++ /dev/null
@@ -1,41 +0,0 @@
-//===--- OptSpecifier.h - Option Specifiers ---------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef CLANG_DRIVER_OPTSPECIFIER_H
-#define CLANG_DRIVER_OPTSPECIFIER_H
-
-#include "llvm/Support/Compiler.h"
-
-namespace clang {
-namespace driver {
-  class Option;
-
-  /// OptSpecifier - Wrapper class for abstracting references to option IDs.
-  class OptSpecifier {
-    unsigned ID;
-
-  private:
-    explicit OptSpecifier(bool) LLVM_DELETED_FUNCTION;
-
-  public:
-    OptSpecifier() : ID(0) {}
-    /*implicit*/ OptSpecifier(unsigned _ID) : ID(_ID) {}
-    /*implicit*/ OptSpecifier(const Option *Opt);
-
-    bool isValid() const { return ID != 0; }
-
-    unsigned getID() const { return ID; }
-
-    bool operator==(OptSpecifier Opt) const { return ID == Opt.getID(); }
-    bool operator!=(OptSpecifier Opt) const { return !(*this == Opt); }
-  };
-}
-}
-
-#endif
diff --git a/include/clang/Driver/OptTable.h b/include/clang/Driver/OptTable.h
deleted file mode 100644
index 53d83a0f38aa..000000000000
--- a/include/clang/Driver/OptTable.h
+++ /dev/null
@@ -1,161 +0,0 @@
-//===--- OptTable.h - Option Table ------------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef CLANG_DRIVER_OPTTABLE_H
-#define CLANG_DRIVER_OPTTABLE_H
-
-#include "clang/Basic/LLVM.h"
-#include "clang/Driver/OptSpecifier.h"
-#include "llvm/ADT/StringSet.h"
-
-namespace clang {
-namespace driver {
-  class Arg;
-  class ArgList;
-  class InputArgList;
-  class Option;
-
-  /// \brief Provide access to the Option info table.
-  ///
-  /// The OptTable class provides a layer of indirection which allows Option
-  /// instance to be created lazily. In the common case, only a few options will
-  /// be needed at runtime; the OptTable class maintains enough information to
-  /// parse command lines without instantiating Options, while letting other
-  /// parts of the driver still use Option instances where convenient.
-  class OptTable {
-  public:
-    /// \brief Entry for a single option instance in the option data table.
-    struct Info {
-      /// A null terminated array of prefix strings to apply to name while
-      /// matching.
-      const char *const *Prefixes;
-      const char *Name;
-      const char *HelpText;
-      const char *MetaVar;
-      unsigned ID;
-      unsigned char Kind;
-      unsigned char Param;
-      unsigned short Flags;
-      unsigned short GroupID;
-      unsigned short AliasID;
-    };
-
-  private:
-    /// \brief The static option information table.
-    const Info *OptionInfos;
-    unsigned NumOptionInfos;
-
-    unsigned TheInputOptionID;
-    unsigned TheUnknownOptionID;
-
-    /// The index of the first option which can be parsed (i.e., is not a
-    /// special option like 'input' or 'unknown', and is not an option group).
-    unsigned FirstSearchableIndex;
-
-    /// The union of all option prefixes. If an argument does not begin with
-    /// one of these, it is an input.
-    llvm::StringSet<> PrefixesUnion;
-    std::string PrefixChars;
-
-  private:
-    const Info &getInfo(OptSpecifier Opt) const {
-      unsigned id = Opt.getID();
-      assert(id > 0 && id - 1 < getNumOptions() && "Invalid Option ID.");
-      return OptionInfos[id - 1];
-    }
-
-  protected:
-    OptTable(const Info *_OptionInfos, unsigned _NumOptionInfos);
-  public:
-    ~OptTable();
-
-    /// \brief Return the total number of option classes.
-    unsigned getNumOptions() const { return NumOptionInfos; }
-
-    /// \brief Get the given Opt's Option instance, lazily creating it
-    /// if necessary.
-    ///
-    /// \return The option, or null for the INVALID option id.
-    const Option getOption(OptSpecifier Opt) const;
-
-    /// \brief Lookup the name of the given option.
-    const char *getOptionName(OptSpecifier id) const {
-      return getInfo(id).Name;
-    }
-
-    /// \brief Get the kind of the given option.
-    unsigned getOptionKind(OptSpecifier id) const {
-      return getInfo(id).Kind;
-    }
-
-    /// \brief Get the group id for the given option.
-    unsigned getOptionGroupID(OptSpecifier id) const {
-      return getInfo(id).GroupID;
-    }
-
-    /// \brief Get the help text to use to describe this option.
-    const char *getOptionHelpText(OptSpecifier id) const {
-      return getInfo(id).HelpText;
-    }
-
-    /// \brief Get the meta-variable name to use when describing
-    /// this options values in the help text.
-    const char *getOptionMetaVar(OptSpecifier id) const {
-      return getInfo(id).MetaVar;
-    }
-
-    /// \brief Parse a single argument; returning the new argument and
-    /// updating Index.
-    ///
-    /// \param [in,out] Index - The current parsing position in the argument
-    /// string list; on return this will be the index of the next argument
-    /// string to parse.
-    ///
-    /// \return The parsed argument, or 0 if the argument is missing values
-    /// (in which case Index still points at the conceptual next argument string
-    /// to parse).
-    Arg *ParseOneArg(const ArgList &Args, unsigned &Index) const;
-
-    /// \brief Parse an list of arguments into an InputArgList.
-    ///
-    /// The resulting InputArgList will reference the strings in [\p ArgBegin,
-    /// \p ArgEnd), and their lifetime should extend past that of the returned
-    /// InputArgList.
-    ///
-    /// The only error that can occur in this routine is if an argument is
-    /// missing values; in this case \p MissingArgCount will be non-zero.
-    ///
-    /// \param ArgBegin - The beginning of the argument vector.
-    /// \param ArgEnd - The end of the argument vector.
-    /// \param MissingArgIndex - On error, the index of the option which could
-    /// not be parsed.
-    /// \param MissingArgCount - On error, the number of missing options.
-    /// \return An InputArgList; on error this will contain all the options
-    /// which could be parsed.
-    InputArgList *ParseArgs(const char* const *ArgBegin,
-                            const char* const *ArgEnd,
-                            unsigned &MissingArgIndex,
-                            unsigned &MissingArgCount) const;
-
-    /// \brief Render the help text for an option table.
-    ///
-    /// \param OS - The stream to write the help text to.
-    /// \param Name - The name to use in the usage line.
-    /// \param Title - The title to use in the usage line.
-    /// \param FlagsToInclude - If non-zero, only include options with any
-    ///                         of these flags set.
-    /// \param FlagsToExclude - Exclude options with any of these flags set.
-    void PrintHelp(raw_ostream &OS, const char *Name,
-                   const char *Title, unsigned short FlagsToInclude = 0,
-                   unsigned short FlagsToExclude = 0) const;
-  };
-}
-}
-
-#endif
diff --git a/include/clang/Driver/Option.h b/include/clang/Driver/Option.h
deleted file mode 100644
index 764934fdf810..000000000000
--- a/include/clang/Driver/Option.h
+++ /dev/null
@@ -1,204 +0,0 @@
-//===--- Option.h - Abstract Driver Options ---------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef CLANG_DRIVER_OPTION_H_
-#define CLANG_DRIVER_OPTION_H_
-
-#include "clang/Basic/LLVM.h"
-#include "clang/Driver/OptTable.h"
-#include "llvm/ADT/StringRef.h"
-#include "llvm/Support/ErrorHandling.h"
-
-namespace clang {
-namespace driver {
-  class Arg;
-  class ArgList;
-
-namespace options {
-  /// Base flags for all options. Custom flags may be added after.
-  enum DriverFlag {
-    HelpHidden       = (1 << 0),
-    RenderAsInput    = (1 << 1),
-    RenderJoined     = (1 << 2),
-    RenderSeparate   = (1 << 3)
-  };
-
-  /// Flags specifically for clang options.
-  enum ClangFlags {
-    DriverOption     = (1 << 4),
-    LinkerInput      = (1 << 5),
-    NoArgumentUnused = (1 << 6),
-    NoForward        = (1 << 7),
-    Unsupported      = (1 << 8),
-    CC1Option        = (1 << 9),
-    NoDriverOption   = (1 << 10)
-  };
-}
-
-  /// Option - Abstract representation for a single form of driver
-  /// argument.
-  ///
-  /// An Option class represents a form of option that the driver
-  /// takes, for example how many arguments the option has and how
-  /// they can be provided. Individual option instances store
-  /// additional information about what group the option is a member
-  /// of (if any), if the option is an alias, and a number of
-  /// flags. At runtime the driver parses the command line into
-  /// concrete Arg instances, each of which corresponds to a
-  /// particular Option instance.
-  class Option {
-  public:
-    enum OptionClass {
-      GroupClass = 0,
-      InputClass,
-      UnknownClass,
-      FlagClass,
-      JoinedClass,
-      SeparateClass,
-      CommaJoinedClass,
-      MultiArgClass,
-      JoinedOrSeparateClass,
-      JoinedAndSeparateClass
-    };
-
-    enum RenderStyleKind {
-      RenderCommaJoinedStyle,
-      RenderJoinedStyle,
-      RenderSeparateStyle,
-      RenderValuesStyle
-    };
-
-  protected:
-    const OptTable::Info *Info;
-    const OptTable *Owner;
-
-  public:
-    Option(const OptTable::Info *Info, const OptTable *Owner);
-    ~Option();
-
-    bool isValid() const {
-      return Info != 0;
-    }
-
-    unsigned getID() const {
-      assert(Info && "Must have a valid info!");
-      return Info->ID;
-    }
-
-    OptionClass getKind() const {
-      assert(Info && "Must have a valid info!");
-      return OptionClass(Info->Kind);
-    }
-
-    /// \brief Get the name of this option without any prefix.
-    StringRef getName() const {
-      assert(Info && "Must have a valid info!");
-      return Info->Name;
-    }
-
-    const Option getGroup() const {
-      assert(Info && "Must have a valid info!");
-      assert(Owner && "Must have a valid owner!");
-      return Owner->getOption(Info->GroupID);
-    }
-
-    const Option getAlias() const {
-      assert(Info && "Must have a valid info!");
-      assert(Owner && "Must have a valid owner!");
-      return Owner->getOption(Info->AliasID);
-    }
-
-    /// \brief Get the default prefix for this option.
-    StringRef getPrefix() const {
-      const char *Prefix = *Info->Prefixes;
-      return Prefix ? Prefix : StringRef();
-    }
-
-    /// \brief Get the name of this option with the default prefix.
-    std::string getPrefixedName() const {
-      std::string Ret = getPrefix();
-      Ret += getName();
-      return Ret;
-    }
-
-    unsigned getNumArgs() const { return Info->Param; }
-
-    bool hasNoOptAsInput() const { return Info->Flags & options::RenderAsInput;}
-
-    RenderStyleKind getRenderStyle() const {
-      if (Info->Flags & options::RenderJoined)
-        return RenderJoinedStyle;
-      if (Info->Flags & options::RenderSeparate)
-        return RenderSeparateStyle;
-      switch (getKind()) {
-      case GroupClass:
-      case InputClass:
-      case UnknownClass:
-        return RenderValuesStyle;
-      case JoinedClass:
-      case JoinedAndSeparateClass:
-        return RenderJoinedStyle;
-      case CommaJoinedClass:
-        return RenderCommaJoinedStyle;
-      case FlagClass:
-      case SeparateClass:
-      case MultiArgClass:
-      case JoinedOrSeparateClass:
-        return RenderSeparateStyle;
-      }
-      llvm_unreachable("Unexpected kind!");
-    }
-
-    /// Test if this option has the flag \a Val.
-    bool hasFlag(unsigned Val) const {
-      return Info->Flags & Val;
-    }
-
-    /// getUnaliasedOption - Return the final option this option
-    /// aliases (itself, if the option has no alias).
-    const Option getUnaliasedOption() const {
-      const Option Alias = getAlias();
-      if (Alias.isValid()) return Alias.getUnaliasedOption();
-      return *this;
-    }
-
-    /// getRenderName - Return the name to use when rendering this
-    /// option.
-    StringRef getRenderName() const {
-      return getUnaliasedOption().getName();
-    }
-
-    /// matches - Predicate for whether this option is part of the
-    /// given option (which may be a group).
-    ///
-    /// Note that matches against options which are an alias should never be
-    /// done -- aliases do not participate in matching and so such a query will
-    /// always be false.
-    bool matches(OptSpecifier ID) const;
-
-    /// accept - Potentially accept the current argument, returning a
-    /// new Arg instance, or 0 if the option does not accept this
-    /// argument (or the argument is missing values).
-    ///
-    /// If the option accepts the current argument, accept() sets
-    /// Index to the position where argument parsing should resume
-    /// (even if the argument is missing values).
-    ///
-    /// \parm ArgSize The number of bytes taken up by the matched Option prefix
-    ///               and name. This is used to determine where joined values
-    ///               start.
-    Arg *accept(const ArgList &Args, unsigned &Index, unsigned ArgSize) const;
-
-    void dump() const;
-  };
-
-} // end namespace driver
-} // end namespace clang
-
-#endif
diff --git a/include/clang/Driver/Options.h b/include/clang/Driver/Options.h
index 6c114e252d3c..28948be96dec 100644
--- a/include/clang/Driver/Options.h
+++ b/include/clang/Driver/Options.h
@@ -10,24 +10,40 @@
 #ifndef CLANG_DRIVER_OPTIONS_H
 #define CLANG_DRIVER_OPTIONS_H
 
+namespace llvm {
+namespace opt {
+class OptTable;
+}
+}
+
 namespace clang {
 namespace driver {
-  class OptTable;
 
 namespace options {
-  enum ID {
+/// Flags specifically for clang options.  Must not overlap with
+/// llvm::opt::DriverFlag.
+enum ClangFlags {
+  DriverOption = (1 << 4),
+  LinkerInput = (1 << 5),
+  NoArgumentUnused = (1 << 6),
+  Unsupported = (1 << 7),
+  CoreOption = (1 << 8),
+  CLOption = (1 << 9),
+  CC1Option = (1 << 10),
+  NoDriverOption = (1 << 11)
+};
+
+enum ID {
     OPT_INVALID = 0, // This is not an option ID.
-#define PREFIX(NAME, VALUE)
-#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, FLAGS, PARAM, \
+#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
                HELPTEXT, METAVAR) OPT_##ID,
 #include "clang/Driver/Options.inc"
     LastOption
 #undef OPTION
-#undef PREFIX
   };
 }
 
-  OptTable *createDriverOptTable();
+llvm::opt::OptTable *createDriverOptTable();
 }
 }
 
diff --git a/include/clang/Driver/Options.td b/include/clang/Driver/Options.td
index 3a5358a7e355..9e7dc78d63cf 100644
--- a/include/clang/Driver/Options.td
+++ b/include/clang/Driver/Options.td
@@ -12,23 +12,55 @@
 //===----------------------------------------------------------------------===//
 
 // Include the common option parsing interfaces.
-include "OptParser.td"
+include "llvm/Option/OptParser.td"
+
+/////////
+// Flags
+
+// DriverOption - The option is a "driver" option, and should not be forwarded
+// to other tools.
+def DriverOption : OptionFlag;
+
+// LinkerInput - The option is a linker input.
+def LinkerInput : OptionFlag;
+
+// NoArgumentUnused - Don't report argument unused warnings for this option; this
+// is useful for options like -static or -dynamic which a user may always end up
+// passing, even if the platform defaults to (or only supports) that option.
+def NoArgumentUnused : OptionFlag;
+
+// Unsupported - The option is unsupported, and the driver will reject command
+// lines that use it.
+def Unsupported : OptionFlag;
+
+// CoreOption - This is considered a "core" Clang option, available in both
+// clang and clang-cl modes.
+def CoreOption : OptionFlag;
+
+// CLOption - This is a cl.exe compatibility option. Options with this flag
+// are made available when the driver is running in CL compatibility mode.
+def CLOption : OptionFlag;
+
+// CC1Option - This option should be accepted by clang -cc1.
+def CC1Option : OptionFlag;
+
+// NoDriverOption - This option should not be accepted by the driver.
+def NoDriverOption : OptionFlag;
 
 /////////
 // Groups
 
-// Meta-group which defines
+// Meta-group for options which are only used for compilation,
+// and not linking etc.
 def CompileOnly_Group     : OptionGroup<"<CompileOnly group>">;
+
 def Action_Group          : OptionGroup<"<action group>">;
 
 def I_Group               : OptionGroup<"<I group>">, Group<CompileOnly_Group>;
-def L_Group               : OptionGroup<"<L group>">, Group<CompileOnly_Group>;
 def M_Group               : OptionGroup<"<M group>">, Group<CompileOnly_Group>;
 def T_Group               : OptionGroup<"<T group>">;
 def O_Group               : OptionGroup<"<O group>">, Group<CompileOnly_Group>;
 def W_Group               : OptionGroup<"<W group>">, Group<CompileOnly_Group>;
-def X_Group               : OptionGroup<"<X group>">;
-def a_Group               : OptionGroup<"<a group>">;
 def d_Group               : OptionGroup<"<d group>">;
 def f_Group               : OptionGroup<"<f group>">, Group<CompileOnly_Group>;
 def f_clang_Group         : OptionGroup<"<f (clang-only) group>">, Group<CompileOnly_Group>;
@@ -39,10 +71,10 @@ def clang_i_Group         : OptionGroup<"<clang i group>">, Group<i_Group>;
 def m_Group               : OptionGroup<"<m group>">, Group<CompileOnly_Group>;
 def m_x86_Features_Group  : OptionGroup<"<m x86 features group>">, Group<m_Group>;
 def m_hexagon_Features_Group  : OptionGroup<"<m hexagon features group>">, Group<m_Group>;
+def m_arm_Features_Group  : OptionGroup<"<m arm features group>">, Group<m_Group>;
+def m_ppc_Features_Group  : OptionGroup<"<m ppc features group>">, Group<m_Group>;
 def opencl_Group          : OptionGroup<"<opencl group>">;
 def u_Group               : OptionGroup<"<u group>">;
-def mips_CPUs_Group       : OptionGroup<"<MIPS CPU aliases group>">,
-  Group<CompileOnly_Group>;
 
 def pedantic_Group        : OptionGroup<"<pedantic group>">,
   Group<CompileOnly_Group>;
@@ -69,7 +101,9 @@ def clang_ignored_m_Group : OptionGroup<"<clang ignored m group>">,
 // substitutions:
 //   _ => __
 //   - => _
+//   / => _SLASH
 //   # => _HASH
+//   ? => _QUESTION
 //   , => _COMMA
 //   = => _EQ
 //   C++ => CXX
@@ -77,45 +111,40 @@ def clang_ignored_m_Group : OptionGroup<"<clang ignored m group>">,
 
 // Developer Driver Options
 
-def ccc_Group : OptionGroup<"<clang internal options>">;
-def ccc_driver_Group : OptionGroup<"<clang driver internal options>">,
-  Group<ccc_Group>, HelpText<"DRIVER OPTIONS">;
-def ccc_debug_Group : OptionGroup<"<clang debug/development internal options>">,
-  Group<ccc_Group>, HelpText<"DEBUG/DEVELOPMENT OPTIONS">;
-
-class CCCDriverOpt : Group<ccc_driver_Group>, Flags<[DriverOption, HelpHidden]>;
-def ccc_cxx : Flag<["-"], "ccc-cxx">, CCCDriverOpt,
-  HelpText<"Act as a C++ driver">;
-def ccc_echo : Flag<["-"], "ccc-echo">, CCCDriverOpt,
-  HelpText<"Echo commands before running them">;
-def ccc_gcc_name : Separate<["-"], "ccc-gcc-name">, CCCDriverOpt,
+def internal_Group : OptionGroup<"<clang internal options>">;
+def internal_driver_Group : OptionGroup<"<clang driver internal options>">,
+  Group<internal_Group>, HelpText<"DRIVER OPTIONS">;
+def internal_debug_Group :
+  OptionGroup<"<clang debug/development internal options>">,
+  Group<internal_Group>, HelpText<"DEBUG/DEVELOPMENT OPTIONS">;
+
+class InternalDriverOpt : Group<internal_driver_Group>,
+  Flags<[DriverOption, HelpHidden]>;
+def driver_mode : Joined<["--"], "driver-mode=">, Group<internal_driver_Group>,
+  Flags<[CoreOption, DriverOption, HelpHidden]>,
+  HelpText<"Set the driver mode to either 'gcc', 'g++', 'cpp', or 'cl'">;
+def ccc_gcc_name : Separate<["-"], "ccc-gcc-name">, InternalDriverOpt,
   HelpText<"Name for native GCC compiler">,
   MetaVarName<"<gcc-path>">;
-def ccc_clang_archs : Separate<["-"], "ccc-clang-archs">, CCCDriverOpt,
-  HelpText<"Comma separate list of architectures to use the clang compiler for">,
-  MetaVarName<"<arch-list>">;
-def ccc_pch_is_pch : Flag<["-"], "ccc-pch-is-pch">, CCCDriverOpt,
+def ccc_pch_is_pch : Flag<["-"], "ccc-pch-is-pch">, InternalDriverOpt,
   HelpText<"Use lazy PCH for precompiled headers">;
-def ccc_pch_is_pth : Flag<["-"], "ccc-pch-is-pth">, CCCDriverOpt,
+def ccc_pch_is_pth : Flag<["-"], "ccc-pch-is-pth">, InternalDriverOpt,
   HelpText<"Use pretokenized headers for precompiled headers">;
 
-class CCCDebugOpt : Group<ccc_debug_Group>, Flags<[DriverOption, HelpHidden]>;
-def ccc_install_dir : Separate<["-"], "ccc-install-dir">, CCCDebugOpt,
+class InternalDebugOpt : Group<internal_debug_Group>,
+  Flags<[DriverOption, HelpHidden]>;
+def ccc_install_dir : Separate<["-"], "ccc-install-dir">, InternalDebugOpt,
   HelpText<"Simulate installation in the given directory">;
-def ccc_print_options : Flag<["-"], "ccc-print-options">, CCCDebugOpt,
-  HelpText<"Dump parsed command line arguments">;
-def ccc_print_phases : Flag<["-"], "ccc-print-phases">, CCCDebugOpt,
+def ccc_print_phases : Flag<["-"], "ccc-print-phases">, InternalDebugOpt,
   HelpText<"Dump list of actions to perform">;
-def ccc_print_bindings : Flag<["-"], "ccc-print-bindings">, CCCDebugOpt,
+def ccc_print_bindings : Flag<["-"], "ccc-print-bindings">, InternalDebugOpt,
   HelpText<"Show bindings of tools to actions">;
 
-def ccc_arcmt_check : Flag<["-"], "ccc-arcmt-check">, CCCDriverOpt,
+def ccc_arcmt_check : Flag<["-"], "ccc-arcmt-check">, InternalDriverOpt,
   HelpText<"Check for ARC migration issues that need manual handling">;
-def ccc_arcmt_modify : Flag<["-"], "ccc-arcmt-modify">, CCCDriverOpt,
+def ccc_arcmt_modify : Flag<["-"], "ccc-arcmt-modify">, InternalDriverOpt,
   HelpText<"Apply modifications to files to conform to ARC">;
-def ccc_arrmt_check : Flag<["-"], "ccc-arrmt-check">, Alias<ccc_arcmt_check>;
-def ccc_arrmt_modify : Flag<["-"], "ccc-arrmt-modify">, Alias<ccc_arcmt_modify>;
-def ccc_arcmt_migrate : Separate<["-"], "ccc-arcmt-migrate">, CCCDriverOpt,
+def ccc_arcmt_migrate : Separate<["-"], "ccc-arcmt-migrate">, InternalDriverOpt,
   HelpText<"Apply modifications and produces temporary files that conform to ARC">;
 def arcmt_migrate_report_output : Separate<["-"], "arcmt-migrate-report-output">,
   HelpText<"Output path for the plist report">,  Flags<[CC1Option]>;
@@ -125,25 +154,49 @@ def arcmt_migrate_emit_arc_errors : Flag<["-"], "arcmt-migrate-emit-errors">,
 
 def _migrate : Flag<["--"], "migrate">, Flags<[DriverOption]>,
   HelpText<"Run the migrator">;
-def ccc_objcmt_migrate : Separate<["-"], "ccc-objcmt-migrate">, CCCDriverOpt,
+def ccc_objcmt_migrate : Separate<["-"], "ccc-objcmt-migrate">,
+  InternalDriverOpt,
   HelpText<"Apply modifications and produces temporary files to migrate to "
    "modern ObjC syntax">;
 def objcmt_migrate_literals : Flag<["-"], "objcmt-migrate-literals">, Flags<[CC1Option]>,
   HelpText<"Enable migration to modern ObjC literals">;
 def objcmt_migrate_subscripting : Flag<["-"], "objcmt-migrate-subscripting">, Flags<[CC1Option]>,
   HelpText<"Enable migration to modern ObjC subscripting">;
+def objcmt_migrate_property : Flag<["-"], "objcmt-migrate-property">, Flags<[CC1Option]>,
+  HelpText<"Enable migration to modern ObjC property">;
+def objcmt_migrate_all : Flag<["-"], "objcmt-migrate-all">, Flags<[CC1Option]>,
+  HelpText<"Enable migration to modern ObjC">;
+def objcmt_migrate_readonly_property : Flag<["-"], "objcmt-migrate-readonly-property">, Flags<[CC1Option]>,
+  HelpText<"Enable migration to modern ObjC readonly property">;
+def objcmt_migrate_readwrite_property : Flag<["-"], "objcmt-migrate-readwrite-property">, Flags<[CC1Option]>,
+  HelpText<"Enable migration to modern ObjC readwrite property">;
+def objcmt_migrate_annotation : Flag<["-"], "objcmt-migrate-annotation">, Flags<[CC1Option]>,
+  HelpText<"Enable migration to property and method annotations">;
+def objcmt_migrate_instancetype : Flag<["-"], "objcmt-migrate-instancetype">, Flags<[CC1Option]>,
+  HelpText<"Enable migration to infer instancetype for method result type">;
+def objcmt_migrate_nsmacros : Flag<["-"], "objcmt-migrate-ns-macros">, Flags<[CC1Option]>,
+  HelpText<"Enable migration to NS_ENUM/NS_OPTIONS macros">;
+def objcmt_migrate_protocol_conformance : Flag<["-"], "objcmt-migrate-protocol-conformance">, Flags<[CC1Option]>,
+  HelpText<"Enable migration to add protocol conformance on classes">;
+def objcmt_atomic_property : Flag<["-"], "objcmt-atomic-property">, Flags<[CC1Option]>,
+  HelpText<"Make migration to 'atomic' properties">;
+def objcmt_returns_innerpointer_property : Flag<["-"], "objcmt-returns-innerpointer-property">, Flags<[CC1Option]>,
+  HelpText<"Enable migration to annotate property with NS_RETURNS_INNER_POINTER">;
+def objcmt_ns_nonatomic_iosonly: Flag<["-"], "objcmt-ns-nonatomic-iosonly">, Flags<[CC1Option]>,
+  HelpText<"Enable migration to use NS_NONATOMIC_IOSONLY macro for setting property's 'atomic' attribute">;
+def objcmt_white_list_dir_path: Joined<["-"], "objcmt-white-list-dir-path=">, Flags<[CC1Option]>,
+  HelpText<"Only modify files with a filename contained in the provided directory path">;
 
 // Make sure all other -ccc- options are rejected.
-def ccc_ : Joined<["-"], "ccc-">, Group<ccc_Group>, Flags<[Unsupported]>;
+def ccc_ : Joined<["-"], "ccc-">, Group<internal_Group>, Flags<[Unsupported]>;
 
 // Standard Options
 
-def _HASH_HASH_HASH : Flag<["-"], "###">, Flags<[DriverOption]>,
+def _HASH_HASH_HASH : Flag<["-"], "###">, Flags<[DriverOption, CoreOption]>,
     HelpText<"Print the commands to run for this compilation">;
-// The '--' option is here for the sake of compatibility with gcc, but is 
-// being ignored by the driver.
-def _DASH_DASH : Flag<["--"], "">, Flags<[DriverOption]>;
-def A : JoinedOrSeparate<["-"], "A">;
+def _DASH_DASH : Option<["--"], "", KIND_REMAINING_ARGS>,
+    Flags<[DriverOption, CoreOption]>;
+def A : JoinedOrSeparate<["-"], "A">, Flags<[RenderJoined]>;
 def B : JoinedOrSeparate<["-"], "B">;
 def CC : Flag<["-"], "CC">, Flags<[CC1Option]>;
 def C : Flag<["-"], "C">, Flags<[CC1Option]>;
@@ -174,18 +227,19 @@ def MT : JoinedOrSeparate<["-"], "MT">, Group<M_Group>, Flags<[CC1Option]>,
     HelpText<"Specify target for dependency">;
 def Mach : Flag<["-"], "Mach">;
 def M : Flag<["-"], "M">, Group<M_Group>;
-def O0 : Joined<["-"], "O0">, Group<O_Group>, Flags<[CC1Option]>;
-def O4 : Joined<["-"], "O4">, Group<O_Group>, Flags<[CC1Option]>;
+def O0 : Flag<["-"], "O0">, Group<O_Group>, Flags<[CC1Option]>;
+def O4 : Flag<["-"], "O4">, Group<O_Group>, Flags<[CC1Option]>;
 def ObjCXX : Flag<["-"], "ObjC++">, Flags<[DriverOption]>,
   HelpText<"Treat source input files as Objective-C++ inputs">;
 def ObjC : Flag<["-"], "ObjC">, Flags<[DriverOption]>,
   HelpText<"Treat source input files as Objective-C inputs">;
 def O : Joined<["-"], "O">, Group<O_Group>, Flags<[CC1Option]>;
+def O_flag : Flag<["-"], "O">, Flags<[CC1Option]>, Alias<O>, AliasArgs<["2"]>;
 def Ofast : Joined<["-"], "Ofast">, Group<O_Group>, Flags<[CC1Option]>;
 def P : Flag<["-"], "P">, Flags<[CC1Option]>,
   HelpText<"Disable linemarker output in -E mode">;
 def Qn : Flag<["-"], "Qn">;
-def Qunused_arguments : Flag<["-"], "Qunused-arguments">, Flags<[DriverOption]>,
+def Qunused_arguments : Flag<["-"], "Qunused-arguments">, Flags<[DriverOption, CoreOption]>,
   HelpText<"Don't emit warning for unused driver arguments">;
 def Q : Flag<["-"], "Q">;
 def R : Flag<["-"], "R">;
@@ -214,9 +268,7 @@ def Wnonportable_cfstrings : Joined<["-"], "Wnonportable-cfstrings">, Group<W_Gr
 def Wp_COMMA : CommaJoined<["-"], "Wp,">,
   HelpText<"Pass the comma separated arguments in <arg> to the preprocessor">,
   MetaVarName<"<arg>">;
-def Wwrite_strings : Flag<["-"], "Wwrite-strings">, Group<W_Group>, Flags<[CC1Option]>;
-def Wno_write_strings : Flag<["-"], "Wno-write-strings">, Group<W_Group>, Flags<[CC1Option]>;
-def W_Joined : Joined<["-"], "W">, Group<W_Group>, Flags<[CC1Option]>,
+def W_Joined : Joined<["-"], "W">, Group<W_Group>, Flags<[CC1Option, CoreOption]>,
   MetaVarName<"<warning>">, HelpText<"Enable the specified warning">;
 def Xanalyzer : Separate<["-"], "Xanalyzer">,
   HelpText<"Pass <arg> to the static analyzer">, MetaVarName<"<arg>">;
@@ -225,7 +277,7 @@ def Xassembler : Separate<["-"], "Xassembler">,
   HelpText<"Pass <arg> to the assembler">, MetaVarName<"<arg>">;
 def Xclang : Separate<["-"], "Xclang">,
   HelpText<"Pass <arg> to the clang compiler">, MetaVarName<"<arg>">,
-  Flags<[NoForward]>;
+  Flags<[DriverOption, CoreOption]>;
 def Xlinker : Separate<["-"], "Xlinker">, Flags<[LinkerInput, RenderAsInput]>,
   HelpText<"Pass <arg> to the linker">, MetaVarName<"<arg>">;
 def Xpreprocessor : Separate<["-"], "Xpreprocessor">,
@@ -236,11 +288,11 @@ def Z_Flag : Flag<["-"], "Z">;
 def Z_Joined : Joined<["-"], "Z">;
 def all__load : Flag<["-"], "all_load">;
 def allowable__client : Separate<["-"], "allowable_client">;
-def ansi : Flag<["-", "--"], "ansi">, Group<a_Group>;
+def ansi : Flag<["-", "--"], "ansi">;
 def arch__errors__fatal : Flag<["-"], "arch_errors_fatal">;
 def arch : Separate<["-"], "arch">, Flags<[DriverOption]>;
 def arch__only : Separate<["-"], "arch_only">;
-def a : Joined<["-"], "a">, Group<a_Group>;
+def a : Joined<["-"], "a">;
 def bind__at__load : Flag<["-"], "bind_at_load">;
 def bundle__loader : Separate<["-"], "bundle_loader">;
 def bundle : Flag<["-"], "bundle">;
@@ -290,9 +342,6 @@ def fPIE : Flag<["-"], "fPIE">, Group<f_Group>;
 def fno_PIE : Flag<["-"], "fno-PIE">, Group<f_Group>;
 def faccess_control : Flag<["-"], "faccess-control">, Group<f_Group>;
 def fallow_unsupported : Flag<["-"], "fallow-unsupported">, Group<f_Group>;
-def faltivec : Flag<["-"], "faltivec">, Group<f_Group>, Flags<[CC1Option]>,
-  HelpText<"Enable AltiVec vector initializer syntax">;
-def fno_altivec : Flag<["-"], "fno-altivec">, Group<f_Group>, Flags<[CC1Option]>;
 def fapple_kext : Flag<["-"], "fapple-kext">, Group<f_Group>, Flags<[CC1Option]>,
   HelpText<"Use Apple's kernel extensions ABI">;
 def fapple_pragma_pack : Flag<["-"], "fapple-pragma-pack">, Group<f_Group>, Flags<[CC1Option]>,
@@ -313,9 +362,14 @@ def fast : Flag<["-"], "fast">, Group<f_Group>;
 def fasynchronous_unwind_tables : Flag<["-"], "fasynchronous-unwind-tables">, Group<f_Group>;
 
 def fautolink : Flag <["-"], "fautolink">, Group<f_Group>;
-def fno_autolink : Flag <["-"], "fno-autolink">, Group<f_Group>, Flags<[NoForward, CC1Option]>,
+def fno_autolink : Flag <["-"], "fno-autolink">, Group<f_Group>,
+  Flags<[DriverOption, CC1Option]>,
   HelpText<"Disable generation of linker directives for automatic library linking">;
 
+def fprofile_sample_use_EQ : Joined<["-"], "fprofile-sample-use=">,
+    Group<f_Group>, Flags<[DriverOption, CC1Option]>,
+    HelpText<"Enable sample-based profile guided optimizations">;
+
 def fblocks : Flag<["-"], "fblocks">, Group<f_Group>, Flags<[CC1Option]>,
   HelpText<"Enable the 'blocks' language feature">;
 def fbootclasspath_EQ : Joined<["-"], "fbootclasspath=">, Group<f_Group>;
@@ -325,8 +379,6 @@ def fbounds_checking : Flag<["-"], "fbounds-checking">, Group<f_Group>,
   HelpText<"Enable run-time bounds checks">;
 def fbounds_checking_EQ : Joined<["-"], "fbounds-checking=">, Flags<[CC1Option]>,
   Group<f_Group>;
-def fbuiltin_strcat : Flag<["-"], "fbuiltin-strcat">, Group<f_Group>;
-def fbuiltin_strcpy : Flag<["-"], "fbuiltin-strcpy">, Group<f_Group>;
 def fbuiltin : Flag<["-"], "fbuiltin">, Group<f_Group>;
 def fcaret_diagnostics : Flag<["-"], "fcaret-diagnostics">, Group<f_Group>;
 def fcatch_undefined_behavior : Flag<["-"], "fcatch-undefined-behavior">, Group<f_Group>;
@@ -335,6 +387,8 @@ def fcolor_diagnostics : Flag<["-"], "fcolor-diagnostics">, Group<f_Group>, Flag
   HelpText<"Use colors in diagnostics">;
 def fdiagnostics_color : Flag<["-"], "fdiagnostics-color">, Group<f_Group>;
 def fdiagnostics_color_EQ : Joined<["-"], "fdiagnostics-color=">, Group<f_Group>;
+def fansi_escape_codes : Flag<["-"], "fansi-escape-codes">, Group<f_Group>, Flags<[CC1Option]>,
+  HelpText<"Use ANSI escape codes for diagnostics">;
 def fcomment_block_commands : CommaJoined<["-"], "fcomment-block-commands=">, Group<f_clang_Group>, Flags<[CC1Option]>,
   HelpText<"Treat each comma separated argument in <arg> as a documentation comment block command">,
   MetaVarName<"<arg>">;
@@ -344,13 +398,15 @@ def fcompile_resource_EQ : Joined<["-"], "fcompile-resource=">, Group<f_Group>;
 def fconstant_cfstrings : Flag<["-"], "fconstant-cfstrings">, Group<f_Group>;
 def fconstant_string_class_EQ : Joined<["-"], "fconstant-string-class=">, Group<f_Group>;
 def fconstexpr_depth_EQ : Joined<["-"], "fconstexpr-depth=">, Group<f_Group>;
+def fconstexpr_steps_EQ : Joined<["-"], "fconstexpr-steps=">, Group<f_Group>;
 def fconstexpr_backtrace_limit_EQ : Joined<["-"], "fconstexpr-backtrace-limit=">,
                                     Group<f_Group>;
 def fno_crash_diagnostics : Flag<["-"], "fno-crash-diagnostics">, Group<f_clang_Group>, Flags<[NoArgumentUnused]>;
 def fcreate_profile : Flag<["-"], "fcreate-profile">, Group<f_Group>;
 def fcxx_exceptions: Flag<["-"], "fcxx-exceptions">, Group<f_Group>,
   HelpText<"Enable C++ exceptions">, Flags<[CC1Option]>;
-def fcxx_modules : Flag <["-"], "fcxx-modules">, Group<f_Group>, Flags<[NoForward]>;
+def fcxx_modules : Flag <["-"], "fcxx-modules">, Group<f_Group>,
+  Flags<[DriverOption]>;
 def fdebug_pass_arguments : Flag<["-"], "fdebug-pass-arguments">, Group<f_Group>;
 def fdebug_pass_structure : Flag<["-"], "fdebug-pass-structure">, Group<f_Group>;
 def fdiagnostics_fixit_info : Flag<["-"], "fdiagnostics-fixit-info">, Group<f_clang_Group>;
@@ -387,6 +443,10 @@ def fencoding_EQ : Joined<["-"], "fencoding=">, Group<f_Group>;
 def ferror_limit_EQ : Joined<["-"], "ferror-limit=">, Group<f_Group>;
 def fexceptions : Flag<["-"], "fexceptions">, Group<f_Group>, Flags<[CC1Option]>,
   HelpText<"Enable support for exception handling">;
+def fexpensive_optimizations : Flag<["-"], "fexpensive-optimizations">,
+  Group<clang_ignored_f_Group>;
+def fno_expensive_optimizations : Flag<["-"], "fno-expensive-optimizations">,
+  Group<clang_ignored_f_Group>;
 def fextdirs_EQ : Joined<["-"], "fextdirs=">, Group<f_Group>;
 def fextended_identifiers : Flag<["-"], "fextended-identifiers">,
     Group<clang_ignored_f_Group>;
@@ -405,7 +465,7 @@ def fbracket_depth_EQ : Joined<["-"], "fbracket-depth=">, Group<f_Group>;
 def fsignaling_math : Flag<["-"], "fsignaling-math">, Group<f_Group>;
 def fno_signaling_math : Flag<["-"], "fno-signaling-math">, Group<f_Group>;
 def fsanitize_EQ : CommaJoined<["-"], "fsanitize=">, Group<f_clang_Group>,
-                   Flags<[CC1Option]>, MetaVarName<"<check>">,
+                   Flags<[CC1Option, CoreOption]>, MetaVarName<"<check>">,
                    HelpText<"Enable runtime instrumentation for bug detection: "
                             "address (memory errors) | thread (race detection) | "
                             "undefined (miscellaneous undefined behavior)">;
@@ -500,13 +560,13 @@ def fms_extensions : Flag<["-"], "fms-extensions">, Group<f_Group>, Flags<[CC1Op
   HelpText<"Accept some non-standard constructs supported by the Microsoft compiler">;
 def fms_compatibility : Flag<["-"], "fms-compatibility">, Group<f_Group>, Flags<[CC1Option]>,
   HelpText<"Enable Microsoft compatibility mode">;
-def fmsc_version : Joined<["-"], "fmsc-version=">, Group<f_Group>, Flags<[CC1Option]>,
+def fmsc_version : Joined<["-"], "fmsc-version=">, Group<f_Group>, Flags<[CC1Option, CoreOption]>,
   HelpText<"Version of the Microsoft C/C++ compiler to report in _MSC_VER (0 = don't define it (default))">;
 def fdelayed_template_parsing : Flag<["-"], "fdelayed-template-parsing">, Group<f_Group>,
   HelpText<"Parse templated function definitions at the end of the "
            "translation unit ">,  Flags<[CC1Option]>;
 def fmodules_cache_path : Joined<["-"], "fmodules-cache-path=">, Group<i_Group>,
-  Flags<[NoForward,CC1Option]>, MetaVarName<"<directory>">,
+  Flags<[DriverOption, CC1Option]>, MetaVarName<"<directory>">,
   HelpText<"Specify the module cache path">;
 def fmodules_prune_interval : Joined<["-"], "fmodules-prune-interval=">, Group<i_Group>,
   Flags<[CC1Option]>, MetaVarName<"<seconds>">,
@@ -514,10 +574,23 @@ def fmodules_prune_interval : Joined<["-"], "fmodules-prune-interval=">, Group<i
 def fmodules_prune_after : Joined<["-"], "fmodules-prune-after=">, Group<i_Group>,
   Flags<[CC1Option]>, MetaVarName<"<seconds>">,
   HelpText<"Specify the interval (in seconds) after which a module file will be considered unused">;
-def fmodules : Flag <["-"], "fmodules">, Group<f_Group>, Flags<[NoForward,CC1Option]>,
+def fmodules : Flag <["-"], "fmodules">, Group<f_Group>,
+  Flags<[DriverOption, CC1Option]>,
   HelpText<"Enable the 'modules' language feature">;
+def fmodule_maps : Flag <["-"], "fmodule-maps">, Group<f_Group>,
+  Flags<[DriverOption,CC1Option]>,
+  HelpText<"Read module maps to understand the structure of library headers">;
+def fmodule_name : JoinedOrSeparate<["-"], "fmodule-name=">, Group<f_Group>,
+  Flags<[DriverOption,CC1Option]>, MetaVarName<"<name>">,
+  HelpText<"Specify the name of the module to build">;
+def fmodule_map_file : JoinedOrSeparate<["-"], "fmodule-map-file=">,
+  Group<f_Group>, Flags<[DriverOption,CC1Option]>, MetaVarName<"<file>">,
+  HelpText<"Load this module map file">;
 def fmodules_ignore_macro : Joined<["-"], "fmodules-ignore-macro=">, Group<f_Group>, Flags<[CC1Option]>,
   HelpText<"Ignore the definition of the given macro when building and loading modules">;
+def fmodules_decluse : Flag <["-"], "fmodules-decluse">, Group<f_Group>,
+  Flags<[DriverOption,CC1Option]>,
+  HelpText<"Require declaration of modules used within a module">;
 def fretain_comments_from_system_headers : Flag<["-"], "fretain-comments-from-system-headers">, Group<f_Group>, Flags<[CC1Option]>;
 
 def fmudflapth : Flag<["-"], "fmudflapth">, Group<f_Group>;
@@ -534,10 +607,12 @@ def fno_assume_sane_operator_new : Flag<["-"], "fno-assume-sane-operator-new">,
   Flags<[CC1Option]>;
 def fno_blocks : Flag<["-"], "fno-blocks">, Group<f_Group>;
 def fno_borland_extensions : Flag<["-"], "fno-borland-extensions">, Group<f_Group>;
-def fno_builtin_strcat : Flag<["-"], "fno-builtin-strcat">, Group<f_Group>;
-def fno_builtin_strcpy : Flag<["-"], "fno-builtin-strcpy">, Group<f_Group>;
 def fno_builtin : Flag<["-"], "fno-builtin">, Group<f_Group>, Flags<[CC1Option]>,
   HelpText<"Disable implicit builtin knowledge of functions">;
+def fno_builtin_ : Joined<["-"], "fno-builtin-">, Group<clang_ignored_f_Group>,
+  HelpText<"Disable implicit builtin knowledge of a specific function">;
+def fno_math_builtin : Flag<["-"], "fno-math-builtin">, Group<f_Group>, Flags<[CC1Option]>,
+  HelpText<"Disable implicit builtin knowledge of math functions">;
 def fno_caret_diagnostics : Flag<["-"], "fno-caret-diagnostics">, Group<f_Group>,
  Flags<[CC1Option]>;
 def fno_color_diagnostics : Flag<["-"], "fno-color-diagnostics">, Group<f_Group>;
@@ -548,13 +623,14 @@ def fno_constant_cfstrings : Flag<["-"], "fno-constant-cfstrings">, Group<f_Grou
   Flags<[CC1Option]>,
   HelpText<"Disable creation of CodeFoundation-type constant strings">;
 def fno_cxx_exceptions: Flag<["-"], "fno-cxx-exceptions">, Group<f_Group>;
-def fno_cxx_modules : Flag <["-"], "fno-cxx-modules">, Group<f_Group>, Flags<[NoForward]>;
+def fno_cxx_modules : Flag <["-"], "fno-cxx-modules">, Group<f_Group>,
+  Flags<[DriverOption]>;
 def fno_diagnostics_fixit_info : Flag<["-"], "fno-diagnostics-fixit-info">, Group<f_Group>,
   Flags<[CC1Option]>, HelpText<"Do not include fixit information in diagnostics">;
 def fno_diagnostics_show_name : Flag<["-"], "fno-diagnostics-show-name">, Group<f_Group>;
 def fno_diagnostics_show_option : Flag<["-"], "fno-diagnostics-show-option">, Group<f_Group>;
 def fno_diagnostics_show_note_include_stack : Flag<["-"], "fno-diagnostics-show-note-include-stack">,
-    Flags<[CC1Option]>, Group<f_Group>, HelpText<"Display include stacks for diagnostic notes">;
+    Flags<[CC1Option]>, Group<f_Group>;
 def fno_dollars_in_identifiers : Flag<["-"], "fno-dollars-in-identifiers">, Group<f_Group>,
   HelpText<"Disallow '$' in identifiers">, Flags<[CC1Option]>;
 def fno_elide_constructors : Flag<["-"], "fno-elide-constructors">, Group<f_Group>,
@@ -571,7 +647,12 @@ def fno_limit_debug_info : Flag<["-"], "fno-limit-debug-info">, Group<f_Group>,
   HelpText<"Do not limit debug information produced to reduce size of debug binary">;
 def fno_merge_all_constants : Flag<["-"], "fno-merge-all-constants">, Group<f_Group>,
     Flags<[CC1Option]>, HelpText<"Disallow merging of constants">;
-def fno_modules : Flag <["-"], "fno-modules">, Group<f_Group>, Flags<[NoForward]>;
+def fno_modules : Flag <["-"], "fno-modules">, Group<f_Group>,
+  Flags<[DriverOption]>;
+def fno_module_maps : Flag <["-"], "fno-module-maps">, Group<f_Group>,
+  Flags<[DriverOption]>;
+def fno_modules_decluse : Flag <["-"], "fno-modules-decluse">, Group<f_Group>,
+  Flags<[DriverOption]>;
 def fno_ms_extensions : Flag<["-"], "fno-ms-extensions">, Group<f_Group>;
 def fno_ms_compatibility : Flag<["-"], "fno-ms-compatibility">, Group<f_Group>;
 def fno_delayed_template_parsing : Flag<["-"], "fno-delayed-template-parsing">, Group<f_Group>;
@@ -594,6 +675,7 @@ def fno_spell_checking : Flag<["-"], "fno-spell-checking">, Group<f_Group>,
 def fno_stack_protector : Flag<["-"], "fno-stack-protector">, Group<f_Group>;
 def fno_strict_aliasing : Flag<["-"], "fno-strict-aliasing">, Group<f_Group>;
 def fstruct_path_tbaa : Flag<["-"], "fstruct-path-tbaa">, Group<f_Group>;
+def fno_struct_path_tbaa : Flag<["-"], "fno-struct-path-tbaa">, Group<f_Group>;
 def fno_strict_enums : Flag<["-"], "fno-strict-enums">, Group<f_Group>;
 def fno_strict_overflow : Flag<["-"], "fno-strict-overflow">, Group<f_Group>;
 def fno_threadsafe_statics : Flag<["-"], "fno-threadsafe-statics">, Group<f_Group>,
@@ -643,7 +725,6 @@ def fobjc_nonfragile_abi : Flag<["-"], "fobjc-nonfragile-abi">, Group<f_Group>;
 def fno_objc_nonfragile_abi : Flag<["-"], "fno-objc-nonfragile-abi">, Group<f_Group>;
 
 def fobjc_sender_dependent_dispatch : Flag<["-"], "fobjc-sender-dependent-dispatch">, Group<f_Group>;
-def fobjc : Flag<["-"], "fobjc">, Group<f_Group>;
 def fomit_frame_pointer : Flag<["-"], "fomit-frame-pointer">, Group<f_Group>;
 def fopenmp : Flag<["-"], "fopenmp">, Group<f_Group>, Flags<[CC1Option]>;
 def fno_optimize_sibling_calls : Flag<["-"], "fno-optimize-sibling-calls">, Group<f_Group>;
@@ -658,6 +739,8 @@ def fpack_struct_EQ : Joined<["-"], "fpack-struct=">, Group<f_Group>, Flags<[CC1
   HelpText<"Specify the default maximum struct packing alignment">;
 def fpascal_strings : Flag<["-"], "fpascal-strings">, Group<f_Group>, Flags<[CC1Option]>,
   HelpText<"Recognize and construct Pascal-style string literals">;
+def fpcc_struct_return : Flag<["-"], "fpcc-struct-return">, Group<f_Group>, Flags<[CC1Option]>,
+  HelpText<"Override the default ABI to return all structs on the stack">;
 def fpch_preprocess : Flag<["-"], "fpch-preprocess">, Group<f_Group>;
 def fpic : Flag<["-"], "fpic">, Group<f_Group>;
 def fno_pic : Flag<["-"], "fno-pic">, Group<f_Group>;
@@ -667,6 +750,8 @@ def fprofile_arcs : Flag<["-"], "fprofile-arcs">, Group<f_Group>;
 def fprofile_generate : Flag<["-"], "fprofile-generate">, Group<f_Group>;
 def framework : Separate<["-"], "framework">, Flags<[LinkerInput]>;
 def frandom_seed_EQ : Joined<["-"], "frandom-seed=">, Group<clang_ignored_f_Group>;
+def freg_struct_return : Flag<["-"], "freg-struct-return">, Group<f_Group>, Flags<[CC1Option]>,
+  HelpText<"Override the default ABI to return small structs in registers">;
 def frtti : Flag<["-"], "frtti">, Group<f_Group>;
 def fsched_interblock : Flag<["-"], "fsched-interblock">, Group<clang_ignored_f_Group>;
 def fshort_enums : Flag<["-"], "fshort-enums">, Group<f_Group>, Flags<[CC1Option]>,
@@ -682,6 +767,8 @@ def fshow_source_location : Flag<["-"], "fshow-source-location">, Group<f_Group>
 def fspell_checking : Flag<["-"], "fspell-checking">, Group<f_Group>;
 def fsigned_bitfields : Flag<["-"], "fsigned-bitfields">, Group<f_Group>;
 def fsigned_char : Flag<["-"], "fsigned-char">, Group<f_Group>;
+def fno_signed_char : Flag<["-"], "fno-signed-char">, Flags<[CC1Option]>,
+    Group<clang_ignored_f_Group>, HelpText<"Char is unsigned">;
 def fsplit_stack : Flag<["-"], "fsplit-stack">, Group<f_Group>;
 def fstack_protector_all : Flag<["-"], "fstack-protector-all">, Group<f_Group>;
 def fstack_protector : Flag<["-"], "fstack-protector">, Group<f_Group>;
@@ -696,6 +783,8 @@ def ftemplate_depth_EQ : Joined<["-"], "ftemplate-depth=">, Group<f_Group>;
 def ftemplate_depth_ : Joined<["-"], "ftemplate-depth-">, Group<f_Group>;
 def ftemplate_backtrace_limit_EQ : Joined<["-"], "ftemplate-backtrace-limit=">,
                                    Group<f_Group>;
+def foperator_arrow_depth_EQ : Joined<["-"], "foperator-arrow-depth=">,
+                               Group<f_Group>;
 def ftest_coverage : Flag<["-"], "ftest-coverage">, Group<f_Group>;
 def fvectorize : Flag<["-"], "fvectorize">, Group<f_Group>,
   HelpText<"Enable the loop vectorization passes">;
@@ -737,12 +826,21 @@ def ftrap_function_EQ : Joined<["-"], "ftrap-function=">, Group<f_Group>, Flags<
 def funit_at_a_time : Flag<["-"], "funit-at-a-time">, Group<f_Group>;
 def funroll_loops : Flag<["-"], "funroll-loops">, Group<f_Group>,
   HelpText<"Turn on loop unroller">, Flags<[CC1Option]>;
+def fno_unroll_loops : Flag<["-"], "fno-unroll-loops">, Group<f_Group>,
+  HelpText<"Turn off loop unroller">, Flags<[CC1Option]>;
+def freroll_loops : Flag<["-"], "freroll-loops">, Group<f_Group>,
+  HelpText<"Turn on loop reroller">, Flags<[CC1Option]>;
+def fno_reroll_loops : Flag<["-"], "fno-reroll-loops">, Group<f_Group>,
+  HelpText<"Turn off loop reroller">;
 def funsigned_bitfields : Flag<["-"], "funsigned-bitfields">, Group<f_Group>;
 def funsigned_char : Flag<["-"], "funsigned-char">, Group<f_Group>;
+def fno_unsigned_char : Flag<["-"], "fno-unsigned-char">, Group<clang_ignored_f_Group>;
 def funwind_tables : Flag<["-"], "funwind-tables">, Group<f_Group>;
 def fuse_cxa_atexit : Flag<["-"], "fuse-cxa-atexit">, Group<f_Group>;
 def fuse_init_array : Flag<["-"], "fuse-init-array">, Group<f_Group>, Flags<[CC1Option]>,
   HelpText<"Use .init_array instead of .ctors">;
+def fno_var_tracking : Flag<["-"], "fno-var-tracking">,
+  Group<clang_ignored_f_Group>;
 def fverbose_asm : Flag<["-"], "fverbose-asm">, Group<f_Group>;
 def fvisibility_EQ : Joined<["-"], "fvisibility=">, Group<f_Group>,
   HelpText<"Set the default symbol visibility for all global declarations">;
@@ -757,11 +855,17 @@ def fwrapv : Flag<["-"], "fwrapv">, Group<f_Group>, Flags<[CC1Option]>,
 def fwritable_strings : Flag<["-"], "fwritable-strings">, Group<f_Group>, Flags<[CC1Option]>,
   HelpText<"Store string literals as writable data">;
 def fzero_initialized_in_bss : Flag<["-"], "fzero-initialized-in-bss">, Group<f_Group>;
-def ffunction_sections: Flag <["-"], "ffunction-sections">, Group<f_Group>,
-  Flags<[CC1Option]>, HelpText<"Place each function in its own section (ELF Only)">;
-def fdata_sections : Flag <["-"], "fdata-sections">, Group<f_Group>, Flags<[CC1Option]>,
-  HelpText<"Place each data in its own section (ELF Only)">;
-def f : Joined<["-"], "f">, Group<f_Group>;
+def ffunction_sections : Flag<["-"], "ffunction-sections">, Group<f_Group>,
+  Flags<[CC1Option]>,
+  HelpText<"Place each function in its own section (ELF Only)">;
+def fno_function_sections : Flag<["-"], "fno-function-sections">,
+  Group<f_Group>, Flags<[CC1Option]>;
+def fdata_sections : Flag <["-"], "fdata-sections">, Group<f_Group>,
+ Flags<[CC1Option]>, HelpText<"Place each data in its own section (ELF Only)">;
+def fno_data_sections : Flag <["-"], "fno-data-sections">, Group<f_Group>,
+  Flags<[CC1Option]>;
+def fdebug_types_section: Flag <["-"], "fdebug-types-section">, Group<f_Group>,
+  Flags<[CC1Option]>, HelpText<"Place debug types in their own section (ELF Only)">;
 def g_Flag : Flag<["-"], "g">, Group<g_Group>,
   HelpText<"Generate source level debug information">, Flags<[CC1Option]>;
 def gline_tables_only : Flag<["-"], "gline-tables-only">, Group<g_Group>,
@@ -775,9 +879,12 @@ def ggdb0 : Flag<["-"], "ggdb0">, Group<g_Group>;
 def ggdb1 : Flag<["-"], "ggdb1">, Group<g_Group>;
 def ggdb2 : Flag<["-"], "ggdb2">, Group<g_Group>;
 def ggdb3 : Flag<["-"], "ggdb3">, Group<g_Group>;
-def gdwarf_2 : Flag<["-"], "gdwarf-2">, Group<g_Group>;
-def gdwarf_3 : Flag<["-"], "gdwarf-3">, Group<g_Group>;
-def gdwarf_4 : Flag<["-"], "gdwarf-4">, Group<g_Group>;
+def gdwarf_2 : Flag<["-"], "gdwarf-2">, Group<g_Group>,
+  HelpText<"Generate source level debug information with dwarf version 2">, Flags<[CC1Option]>;
+def gdwarf_3 : Flag<["-"], "gdwarf-3">, Group<g_Group>,
+  HelpText<"Generate source level debug information with dwarf version 3">, Flags<[CC1Option]>;
+def gdwarf_4 : Flag<["-"], "gdwarf-4">, Group<g_Group>,
+  HelpText<"Generate source level debug information with dwarf version 4">, Flags<[CC1Option]>;
 def gfull : Flag<["-"], "gfull">, Group<g_Group>;
 def gused : Flag<["-"], "gused">, Group<g_Group>;
 def gstabs : Joined<["-"], "gstabs">, Group<g_Group>, Flags<[Unsupported]>;
@@ -792,6 +899,7 @@ def gstrict_dwarf : Flag<["-"], "gstrict-dwarf">, Group<g_flags_Group>;
 def gno_strict_dwarf : Flag<["-"], "gno-strict-dwarf">, Group<g_flags_Group>;
 def gcolumn_info : Flag<["-"], "gcolumn-info">, Group<g_flags_Group>;
 def gsplit_dwarf : Flag<["-"], "gsplit-dwarf">, Group<g_flags_Group>;
+def ggnu_pubnames : Flag<["-"], "ggnu-pubnames">, Group<g_flags_Group>;
 def headerpad__max__install__names : Joined<["-"], "headerpad_max_install_names">;
 def help : Flag<["-", "--"], "help">, Flags<[CC1Option]>,
   HelpText<"Display available options">;
@@ -808,6 +916,8 @@ def include_ : JoinedOrSeparate<["-", "--"], "include">, Group<clang_i_Group>, E
     MetaVarName<"<file>">, HelpText<"Include file before parsing">, Flags<[CC1Option]>;
 def include_pch : Separate<["-"], "include-pch">, Group<clang_i_Group>, Flags<[CC1Option]>,
   HelpText<"Include precompiled header file">, MetaVarName<"<file>">;
+def relocatable_pch : Flag<["-", "--"], "relocatable-pch">, Flags<[CC1Option]>,
+  HelpText<"Whether to build a relocatable precompiled header">;
 def init : Separate<["-"], "init">;
 def install__name : Separate<["-"], "install_name">;
 def integrated_as : Flag<["-"], "integrated-as">, Flags<[DriverOption]>;
@@ -835,39 +945,34 @@ def lazy__framework : Separate<["-"], "lazy_framework">, Flags<[LinkerInput]>;
 def lazy__library : Separate<["-"], "lazy_library">, Flags<[LinkerInput]>;
 def EL : Flag<["-"], "EL">, Flags<[DriverOption]>;
 def EB : Flag<["-"], "EB">, Flags<[DriverOption]>;
-def m32 : Flag<["-"], "m32">, Group<m_Group>, Flags<[DriverOption]>;
+def m32 : Flag<["-"], "m32">, Group<m_Group>, Flags<[DriverOption, CoreOption]>;
 def mqdsp6_compat : Flag<["-"], "mqdsp6-compat">, Group<m_Group>, Flags<[DriverOption,CC1Option]>,
   HelpText<"Enable hexagon-qdsp6 backward compatibility">;
 def m3dnowa : Flag<["-"], "m3dnowa">, Group<m_x86_Features_Group>;
 def m3dnow : Flag<["-"], "m3dnow">, Group<m_x86_Features_Group>;
-def m64 : Flag<["-"], "m64">, Group<m_Group>, Flags<[DriverOption]>;
+def m64 : Flag<["-"], "m64">, Group<m_Group>, Flags<[DriverOption, CoreOption]>;
 def mabi_EQ : Joined<["-"], "mabi=">, Group<m_Group>;
 def march_EQ : Joined<["-"], "march=">, Group<m_Group>;
-def maltivec : Flag<["-"], "maltivec">, Alias<faltivec>;
-def mno_altivec : Flag<["-"], "mno-altivec">, Alias<fno_altivec>;
-def mfprnd : Flag<["-"], "mfprnd">, Group<m_Group>;
-def mno_fprnd : Flag<["-"], "mno-fprnd">, Group<m_Group>;
-def mmfcrf : Flag<["-"], "mmfcrf">, Group<m_Group>;
-def mno_mfcrf : Flag<["-"], "mno-mfcrf">, Group<m_Group>;
-def mpopcntd : Flag<["-"], "mpopcntd">, Group<m_Group>;
-def mno_popcntd : Flag<["-"], "mno-popcntd">, Group<m_Group>;
-def mqpx : Flag<["-"], "mqpx">, Group<m_Group>;
-def mno_qpx : Flag<["-"], "mno-qpx">, Group<m_Group>;
 def mcmodel_EQ : Joined<["-"], "mcmodel=">, Group<m_Group>;
 def mconstant_cfstrings : Flag<["-"], "mconstant-cfstrings">, Group<clang_ignored_m_Group>;
 def mcpu_EQ : Joined<["-"], "mcpu=">, Group<m_Group>;
 def mdynamic_no_pic : Joined<["-"], "mdynamic-no-pic">, Group<m_Group>;
 def mfix_and_continue : Flag<["-"], "mfix-and-continue">, Group<clang_ignored_m_Group>;
+def mieee_fp : Flag<["-"], "mieee-fp">, Group<clang_ignored_m_Group>;
+def minline_all_stringops : Flag<["-"], "minline-all-stringops">, Group<clang_ignored_m_Group>;
+def mno_inline_all_stringops : Flag<["-"], "mno-inline-all-stringops">, Group<clang_ignored_m_Group>;
 def mfloat_abi_EQ : Joined<["-"], "mfloat-abi=">, Group<m_Group>;
 def mfpmath_EQ : Joined<["-"], "mfpmath=">, Group<m_Group>;
 def mfpu_EQ : Joined<["-"], "mfpu=">, Group<m_Group>;
+def mhwdiv_EQ : Joined<["-"], "mhwdiv=">, Group<m_Group>;
 def mglobal_merge : Flag<["-"], "mglobal-merge">, Group<m_Group>;
 def mhard_float : Flag<["-"], "mhard-float">, Group<m_Group>;
 def miphoneos_version_min_EQ : Joined<["-"], "miphoneos-version-min=">, Group<m_Group>;
 def mios_version_min_EQ : Joined<["-"], "mios-version-min=">, Alias<miphoneos_version_min_EQ>;
 def mios_simulator_version_min_EQ : Joined<["-"], "mios-simulator-version-min=">, Group<m_Group>;
 def mkernel : Flag<["-"], "mkernel">, Group<m_Group>;
-def mlinker_version_EQ : Joined<["-"], "mlinker-version=">, Flags<[NoForward]>;
+def mlinker_version_EQ : Joined<["-"], "mlinker-version=">,
+  Flags<[DriverOption]>;
 def mllvm : Separate<["-"], "mllvm">, Flags<[CC1Option]>,
   HelpText<"Additional arguments to forward to LLVM's option processing">;
 def mmacosx_version_min_EQ : Joined<["-"], "mmacosx-version-min=">, Group<m_Group>;
@@ -877,8 +982,6 @@ def mstackrealign : Flag<["-"], "mstackrealign">, Group<m_Group>, Flags<[CC1Opti
   HelpText<"Force realign the stack at entry to every function">;
 def mstack_alignment : Joined<["-"], "mstack-alignment=">, Group<m_Group>, Flags<[CC1Option]>,
   HelpText<"Set the stack alignment">;
-def mstrict_align : Flag<["-"], "mstrict-align">, Group<m_Group>, Flags<[CC1Option]>,
-  HelpText<"Force all memory accesses to be aligned (ARM only)">;
 def mmmx : Flag<["-"], "mmmx">, Group<m_x86_Features_Group>;
 def mno_3dnowa : Flag<["-"], "mno-3dnowa">, Group<m_x86_Features_Group>;
 def mno_3dnow : Flag<["-"], "mno-3dnow">, Group<m_x86_Features_Group>;
@@ -886,7 +989,8 @@ def mno_constant_cfstrings : Flag<["-"], "mno-constant-cfstrings">, Group<m_Grou
 def mno_global_merge : Flag<["-"], "mno-global-merge">, Group<m_Group>, Flags<[CC1Option]>,
   HelpText<"Disable merging of globals">;
 def mno_mmx : Flag<["-"], "mno-mmx">, Group<m_x86_Features_Group>;
-def mno_pascal_strings : Flag<["-"], "mno-pascal-strings">, Group<m_Group>;
+def mno_pascal_strings : Flag<["-"], "mno-pascal-strings">,
+  Alias<fno_pascal_strings>;
 def mno_red_zone : Flag<["-"], "mno-red-zone">, Group<m_Group>;
 def mno_relax_all : Flag<["-"], "mno-relax-all">, Group<m_Group>;
 def mno_rtd: Flag<["-"], "mno-rtd">, Group<m_Group>;
@@ -903,12 +1007,17 @@ def mno_ssse3 : Flag<["-"], "mno-ssse3">, Group<m_x86_Features_Group>;
 def mno_aes : Flag<["-"], "mno-aes">, Group<m_x86_Features_Group>;
 def mno_avx : Flag<["-"], "mno-avx">, Group<m_x86_Features_Group>;
 def mno_avx2 : Flag<["-"], "mno-avx2">, Group<m_x86_Features_Group>;
+def mno_avx512f : Flag<["-"], "mno-avx512f">, Group<m_x86_Features_Group>;
+def mno_avx512cd : Flag<["-"], "mno-avx512cd">, Group<m_x86_Features_Group>;
+def mno_avx512er : Flag<["-"], "mno-avx512er">, Group<m_x86_Features_Group>;
+def mno_avx512pf : Flag<["-"], "mno-avx512pf">, Group<m_x86_Features_Group>;
 def mno_pclmul : Flag<["-"], "mno-pclmul">, Group<m_x86_Features_Group>;
 def mno_lzcnt : Flag<["-"], "mno-lzcnt">, Group<m_x86_Features_Group>;
 def mno_rdrnd : Flag<["-"], "mno-rdrnd">, Group<m_x86_Features_Group>;
 def mno_bmi : Flag<["-"], "mno-bmi">, Group<m_x86_Features_Group>;
 def mno_bmi2 : Flag<["-"], "mno-bmi2">, Group<m_x86_Features_Group>;
 def mno_popcnt : Flag<["-"], "mno-popcnt">, Group<m_x86_Features_Group>;
+def mno_tbm : Flag<["-"], "mno-tbm">, Group<m_x86_Features_Group>;
 def mno_fma4 : Flag<["-"], "mno-fma4">, Group<m_x86_Features_Group>;
 def mno_fma : Flag<["-"], "mno-fma">, Group<m_x86_Features_Group>;
 def mno_xop : Flag<["-"], "mno-xop">, Group<m_x86_Features_Group>;
@@ -916,16 +1025,50 @@ def mno_f16c : Flag<["-"], "mno-f16c">, Group<m_x86_Features_Group>;
 def mno_rtm : Flag<["-"], "mno-rtm">, Group<m_x86_Features_Group>;
 def mno_prfchw : Flag<["-"], "mno-prfchw">, Group<m_x86_Features_Group>;
 def mno_rdseed : Flag<["-"], "mno-rdseed">, Group<m_x86_Features_Group>;
+def mno_sha : Flag<["-"], "mno-sha">, Group<m_x86_Features_Group>;
 
-def mno_thumb : Flag<["-"], "mno-thumb">, Group<m_Group>;
+def munaligned_access : Flag<["-"], "munaligned-access">, Group<m_arm_Features_Group>,
+  HelpText<"Allow memory accesses to be unaligned (ARM only)">;
+def mno_unaligned_access : Flag<["-"], "mno-unaligned-access">, Group<m_arm_Features_Group>,
+  HelpText<"Force all memory accesses to be aligned (ARM only)">;
+def mstrict_align : Flag<["-"], "mstrict-align">, Alias<mno_unaligned_access>, Flags<[CC1Option,HelpHidden]>,
+  HelpText<"Force all memory accesses to be aligned (ARM only, same as mno-unaligned-access)">;
+def mno_thumb : Flag<["-"], "mno-thumb">, Group<m_arm_Features_Group>;
+def mrestrict_it: Flag<["-"], "mrestrict-it">, Group<m_arm_Features_Group>,
+  HelpText<"Disallow generation of deprecated IT blocks for ARMv8. It is on by default for ARMv8 Thumb mode.">;
+def mno_restrict_it: Flag<["-"], "mno-restrict-it">, Group<m_arm_Features_Group>,
+  HelpText<"Allow generation of deprecated IT blocks for ARMv8. It is off by default for ARMv8 Thumb mode">;
 def marm : Flag<["-"], "marm">, Alias<mno_thumb>;
+def ffixed_r9 : Flag<["-"], "ffixed-r9">, Group<m_arm_Features_Group>,
+  HelpText<"Reserve the r9 register (ARM only)">;
+def mcrc : Flag<["-"], "mcrc">, Group<m_arm_Features_Group>,
+  HelpText<"Allow use of CRC instructions (ARM only)">;
+def mnocrc : Flag<["-"], "mnocrc">, Group<m_arm_Features_Group>,
+  HelpText<"Disallow use of CRC instructions (ARM only)">;
+
+def mvsx : Flag<["-"], "mvsx">, Group<m_ppc_Features_Group>;
+def mno_vsx : Flag<["-"], "mno-vsx">, Group<m_ppc_Features_Group>;
+def mfprnd : Flag<["-"], "mfprnd">, Group<m_ppc_Features_Group>;
+def mno_fprnd : Flag<["-"], "mno-fprnd">, Group<m_ppc_Features_Group>;
+def mmfcrf : Flag<["-"], "mmfcrf">, Group<m_ppc_Features_Group>;
+def mno_mfcrf : Flag<["-"], "mno-mfcrf">, Group<m_ppc_Features_Group>;
+def mpopcntd : Flag<["-"], "mpopcntd">, Group<m_ppc_Features_Group>;
+def mno_popcntd : Flag<["-"], "mno-popcntd">, Group<m_ppc_Features_Group>;
+def mqpx : Flag<["-"], "mqpx">, Group<m_ppc_Features_Group>;
+def mno_qpx : Flag<["-"], "mno-qpx">, Group<m_ppc_Features_Group>;
+
+def faltivec : Flag<["-"], "faltivec">, Group<f_Group>, Flags<[CC1Option]>,
+  HelpText<"Enable AltiVec vector initializer syntax">;
+def fno_altivec : Flag<["-"], "fno-altivec">, Group<f_Group>, Flags<[CC1Option]>;
+def maltivec : Flag<["-"], "maltivec">, Alias<faltivec>;
+def mno_altivec : Flag<["-"], "mno-altivec">, Alias<fno_altivec>;
 
 def mno_warn_nonportable_cfstrings : Flag<["-"], "mno-warn-nonportable-cfstrings">, Group<m_Group>;
 def mno_omit_leaf_frame_pointer : Flag<["-"], "mno-omit-leaf-frame-pointer">, Group<m_Group>;
 def momit_leaf_frame_pointer : Flag<["-"], "momit-leaf-frame-pointer">, Group<m_Group>,
   HelpText<"Omit frame pointer setup for leaf functions">, Flags<[CC1Option]>;
 def moslib_EQ : Joined<["-"], "moslib=">, Group<m_Group>;
-def mpascal_strings : Flag<["-"], "mpascal-strings">, Group<m_Group>;
+def mpascal_strings : Flag<["-"], "mpascal-strings">, Alias<fpascal_strings>;
 def mred_zone : Flag<["-"], "mred-zone">, Group<m_Group>;
 def mregparm_EQ : Joined<["-"], "mregparm=">, Group<m_Group>;
 def mrelax_all : Flag<["-"], "mrelax-all">, Group<m_Group>, Flags<[CC1Option]>,
@@ -949,12 +1092,17 @@ def mssse3 : Flag<["-"], "mssse3">, Group<m_x86_Features_Group>;
 def maes : Flag<["-"], "maes">, Group<m_x86_Features_Group>;
 def mavx : Flag<["-"], "mavx">, Group<m_x86_Features_Group>;
 def mavx2 : Flag<["-"], "mavx2">, Group<m_x86_Features_Group>;
+def mavx512f : Flag<["-"], "mavx512f">, Group<m_x86_Features_Group>;
+def mavx512cd : Flag<["-"], "mavx512cd">, Group<m_x86_Features_Group>;
+def mavx512er : Flag<["-"], "mavx512er">, Group<m_x86_Features_Group>;
+def mavx512pf : Flag<["-"], "mavx512pf">, Group<m_x86_Features_Group>;
 def mpclmul : Flag<["-"], "mpclmul">, Group<m_x86_Features_Group>;
 def mlzcnt : Flag<["-"], "mlzcnt">, Group<m_x86_Features_Group>;
 def mrdrnd : Flag<["-"], "mrdrnd">, Group<m_x86_Features_Group>;
 def mbmi : Flag<["-"], "mbmi">, Group<m_x86_Features_Group>;
 def mbmi2 : Flag<["-"], "mbmi2">, Group<m_x86_Features_Group>;
 def mpopcnt : Flag<["-"], "mpopcnt">, Group<m_x86_Features_Group>;
+def mtbm : Flag<["-"], "mtbm">, Group<m_x86_Features_Group>;
 def mfma4 : Flag<["-"], "mfma4">, Group<m_x86_Features_Group>;
 def mfma : Flag<["-"], "mfma">, Group<m_x86_Features_Group>;
 def mxop : Flag<["-"], "mxop">, Group<m_x86_Features_Group>;
@@ -962,25 +1110,45 @@ def mf16c : Flag<["-"], "mf16c">, Group<m_x86_Features_Group>;
 def mrtm : Flag<["-"], "mrtm">, Group<m_x86_Features_Group>;
 def mprfchw : Flag<["-"], "mprfchw">, Group<m_x86_Features_Group>;
 def mrdseed : Flag<["-"], "mrdseed">, Group<m_x86_Features_Group>;
+def msha : Flag<["-"], "msha">, Group<m_x86_Features_Group>;
+def mcx16 : Flag<["-"], "mcx16">, Group<m_x86_Features_Group>;
 def mips16 : Flag<["-"], "mips16">, Group<m_Group>;
 def mno_mips16 : Flag<["-"], "mno-mips16">, Group<m_Group>;
 def mmicromips : Flag<["-"], "mmicromips">, Group<m_Group>;
 def mno_micromips : Flag<["-"], "mno-micromips">, Group<m_Group>;
 def mxgot : Flag<["-"], "mxgot">, Group<m_Group>;
 def mno_xgot : Flag<["-"], "mno-xgot">, Group<m_Group>;
+def mldc1_sdc1 : Flag<["-"], "mldc1-sdc1">, Group<m_Group>;
+def mno_ldc1_sdc1 : Flag<["-"], "mno-ldc1-sdc1">, Group<m_Group>;
+def mcheck_zero_division : Flag<["-"], "mcheck-zero-division">, Group<m_Group>;
+def mno_check_zero_division : Flag<["-"], "mno-check-zero-division">,
+                              Group<m_Group>;
 def mdsp : Flag<["-"], "mdsp">, Group<m_Group>;
 def mno_dsp : Flag<["-"], "mno-dsp">, Group<m_Group>;
 def mdspr2 : Flag<["-"], "mdspr2">, Group<m_Group>;
 def mno_dspr2 : Flag<["-"], "mno-dspr2">, Group<m_Group>;
 def msingle_float : Flag<["-"], "msingle-float">, Group<m_Group>;
 def mdouble_float : Flag<["-"], "mdouble-float">, Group<m_Group>;
-def mips32 : Flag<["-"], "mips32">, Group<mips_CPUs_Group>,
+def mmsa : Flag<["-"], "mmsa">, Group<m_Group>,
+  HelpText<"Enable MSA ASE (MIPS only)">;
+def mno_msa : Flag<["-"], "mno-msa">, Group<m_Group>,
+  HelpText<"Disable MSA ASE (MIPS only)">;
+def mfp64 : Flag<["-"], "mfp64">, Group<m_Group>,
+  HelpText<"Use 64-bit floating point registers (MIPS only)">;
+def mfp32 : Flag<["-"], "mfp32">, Group<m_Group>,
+  HelpText<"Use 32-bit floating point registers (MIPS only)">;
+def mnan_EQ : Joined<["-"], "mnan=">, Group<m_Group>;
+def mips32 : Flag<["-"], "mips32">,
+  Alias<march_EQ>, AliasArgs<["mips32"]>,
   HelpText<"Equivalent to -march=mips32">, Flags<[HelpHidden]>;
-def mips32r2 : Flag<["-"], "mips32r2">, Group<mips_CPUs_Group>,
+def mips32r2 : Flag<["-"], "mips32r2">,
+  Alias<march_EQ>, AliasArgs<["mips32r2"]>,
   HelpText<"Equivalent to -march=mips32r2">, Flags<[HelpHidden]>;
-def mips64 : Flag<["-"], "mips64">, Group<mips_CPUs_Group>,
+def mips64 : Flag<["-"], "mips64">,
+  Alias<march_EQ>, AliasArgs<["mips64"]>,
   HelpText<"Equivalent to -march=mips64">, Flags<[HelpHidden]>;
-def mips64r2 : Flag<["-"], "mips64r2">, Group<mips_CPUs_Group>,
+def mips64r2 : Flag<["-"], "mips64r2">,
+  Alias<march_EQ>, AliasArgs<["mips64r2"]>,
   HelpText<"Equivalent to -march=mips64r2">, Flags<[HelpHidden]>;
 def module_file_info : Flag<["-"], "module-file-info">, Flags<[DriverOption,CC1Option]>, Group<Action_Group>;
 def mthumb : Flag<["-"], "mthumb">, Group<m_Group>;
@@ -989,8 +1157,6 @@ def multi__module : Flag<["-"], "multi_module">;
 def multiply__defined__unused : Separate<["-"], "multiply_defined_unused">;
 def multiply__defined : Separate<["-"], "multiply_defined">;
 def mwarn_nonportable_cfstrings : Flag<["-"], "mwarn-nonportable-cfstrings">, Group<m_Group>;
-def m_Separate : Separate<["-"], "m">, Group<m_Group>;
-def m_Joined : Joined<["-"], "m">, Group<m_Group>;
 def no_canonical_prefixes : Flag<["-"], "no-canonical-prefixes">, Flags<[HelpHidden]>,
   HelpText<"Use relative instead of canonical paths">;
 def no_cpp_precomp : Flag<["-"], "no-cpp-precomp">, Group<clang_ignored_f_Group>;
@@ -1004,6 +1170,7 @@ def nodefaultlibs : Flag<["-"], "nodefaultlibs">;
 def nofixprebinding : Flag<["-"], "nofixprebinding">;
 def nolibc : Flag<["-"], "nolibc">;
 def nomultidefs : Flag<["-"], "nomultidefs">;
+def nopie : Flag<["-"], "nopie">;
 def noprebind : Flag<["-"], "noprebind">;
 def noseglinkedit : Flag<["-"], "noseglinkedit">;
 def nostartfiles : Flag<["-"], "nostartfiles">;
@@ -1084,16 +1251,16 @@ def static_libgcc : Flag<["-"], "static-libgcc">;
 def static_libstdcxx : Flag<["-"], "static-libstdc++">;
 def static : Flag<["-", "--"], "static">, Flags<[NoArgumentUnused]>;
 def std_default_EQ : Joined<["-"], "std-default=">;
-def std_EQ : Joined<["-", "--"], "std=">, Flags<[CC1Option]>, Group<L_Group>,
-  HelpText<"Language standard to compile for">;
+def std_EQ : Joined<["-", "--"], "std=">, Flags<[CC1Option]>,
+  Group<CompileOnly_Group>, HelpText<"Language standard to compile for">;
 def stdlib_EQ : Joined<["-", "--"], "stdlib=">, Flags<[CC1Option]>,
   HelpText<"C++ standard library to use">;
 def sub__library : JoinedOrSeparate<["-"], "sub_library">;
 def sub__umbrella : JoinedOrSeparate<["-"], "sub_umbrella">;
 def s : Flag<["-"], "s">;
-def target : Separate<["-"], "target">, Flags<[DriverOption]>,
+def target : Joined<["--"], "target=">, Flags<[DriverOption]>,
   HelpText<"Generate code for the given target">;
-def gcc_toolchain : Separate<["-"], "gcc-toolchain">, Flags<[DriverOption]>,
+def gcc_toolchain : Joined<["--"], "gcc-toolchain=">, Flags<[DriverOption]>,
   HelpText<"Use the gcc toolchain at the given directory">;
 def time : Flag<["-"], "time">,
   HelpText<"Time individual commands">;
@@ -1111,7 +1278,6 @@ def undef : Flag<["-"], "undef">, Group<u_Group>, Flags<[CC1Option]>,
   HelpText<"undef all system defines">;
 def unexported__symbols__list : Separate<["-"], "unexported_symbols_list">;
 def u : JoinedOrSeparate<["-"], "u">, Group<u_Group>;
-def use_gold_plugin : Flag<["-"], "use-gold-plugin">;
 def v : Flag<["-"], "v">, Flags<[CC1Option]>,
   HelpText<"Show commands to run and use verbose output">;
 def verify : Flag<["-"], "verify">, Flags<[DriverOption,CC1Option]>,
@@ -1136,6 +1302,7 @@ def working_directory_EQ : Joined<["-"], "working-directory=">, Flags<[CC1Option
 // Double dash options, which are usually an alias for one of the previous
 // options.
 
+def _mhwdiv_EQ : Separate<["--"], "mhwdiv">, Alias<mhwdiv_EQ>;
 def _CLASSPATH_EQ : Joined<["--"], "CLASSPATH=">, Alias<fclasspath_EQ>;
 def _CLASSPATH : Separate<["--"], "CLASSPATH">, Alias<fclasspath_EQ>;
 def _all_warnings : Flag<["--"], "all-warnings">, Alias<Wall>;
@@ -1160,6 +1327,8 @@ def _debug : Flag<["--"], "debug">, Alias<g_Flag>;
 def _define_macro_EQ : Joined<["--"], "define-macro=">, Alias<D>;
 def _define_macro : Separate<["--"], "define-macro">, Alias<D>;
 def _dependencies : Flag<["--"], "dependencies">, Alias<M>;
+def _dyld_prefix_EQ : Joined<["--"], "dyld-prefix=">;
+def _dyld_prefix : Separate<["--"], "dyld-prefix">, Alias<_dyld_prefix_EQ>;
 def _encoding_EQ : Joined<["--"], "encoding=">, Alias<fencoding_EQ>;
 def _encoding : Separate<["--"], "encoding">, Alias<fencoding_EQ>;
 def _entry : Flag<["--"], "entry">, Alias<e>;
@@ -1190,10 +1359,6 @@ def _language_EQ : Joined<["--"], "language=">, Alias<x>;
 def _language : Separate<["--"], "language">, Alias<x>;
 def _library_directory_EQ : Joined<["--"], "library-directory=">, Alias<L>;
 def _library_directory : Separate<["--"], "library-directory">, Alias<L>;
-def _machine__EQ : Joined<["--"], "machine-=">, Alias<m_Joined>;
-def _machine_ : Joined<["--"], "machine-">, Alias<m_Joined>;
-def _machine_EQ : Joined<["--"], "machine=">, Alias<m_Joined>;
-def _machine : Separate<["--"], "machine">, Alias<m_Joined>;
 def _no_line_commands : Flag<["--"], "no-line-commands">, Alias<P>;
 def _no_standard_includes : Flag<["--"], "no-standard-includes">, Alias<nostdinc>;
 def _no_standard_libraries : Flag<["--"], "no-standard-libraries">, Alias<nostdlib>;
@@ -1241,6 +1406,22 @@ def _write_dependencies : Flag<["--"], "write-dependencies">, Alias<MD>;
 def _write_user_dependencies : Flag<["--"], "write-user-dependencies">, Alias<MMD>;
 def _ : Joined<["--"], "">, Flags<[Unsupported]>;
 def mieee_rnd_near : Flag<["-"], "mieee-rnd-near">, Group<m_hexagon_Features_Group>;
+def mv1 : Flag<["-"], "mv1">, Group<m_hexagon_Features_Group>, Alias<march_EQ>,
+          AliasArgs<["v1"]>;
+def mv2 : Flag<["-"], "mv2">, Group<m_hexagon_Features_Group>, Alias<march_EQ>,
+          AliasArgs<["v2"]>;
+def mv3 : Flag<["-"], "mv3">, Group<m_hexagon_Features_Group>, Alias<march_EQ>,
+          AliasArgs<["v3"]>;
+def mv4 : Flag<["-"], "mv4">, Group<m_hexagon_Features_Group>, Alias<march_EQ>,
+          AliasArgs<["v4"]>;
+def mv5 : Flag<["-"], "mv5">, Group<m_hexagon_Features_Group>, Alias<march_EQ>,
+          AliasArgs<["v5"]>;
+
+// These are legacy user-facing driver-level option spellings. They are always
+// aliases for options that are spelled using the more common Unix / GNU flag
+// style of double-dash and equals-joined flags.
+def gcc_toolchain_legacy_spelling : Separate<["-"], "gcc-toolchain">, Alias<gcc_toolchain>;
+def target_legacy_spelling : Separate<["-"], "target">, Alias<target>;
 
 // Special internal option to handle -Xlinker --no-demangle.
 def Z_Xlinker__no_demangle : Flag<["-"], "Z-Xlinker-no-demangle">,
@@ -1256,4 +1437,140 @@ def Z_reserved_lib_stdcxx : Flag<["-"], "Z-reserved-lib-stdc++">,
 def Z_reserved_lib_cckext : Flag<["-"], "Z-reserved-lib-cckext">,
     Flags<[LinkerInput, NoArgumentUnused, Unsupported]>, Group<reserved_lib_Group>;
 
+// Ignored options
+// FIXME: multiclasess produce suffixes, not prefixes. This is fine for now
+// since it is only used in ignored options.
+multiclass BooleanFFlag<string name> {
+  def _f : Flag<["-"], "f"#name>;
+  def _fno : Flag<["-"], "fno-"#name>;
+}
+
+def fprofile_dir : Joined<["-"], "fprofile-dir=">, Group<clang_ignored_f_Group>;
+
+defm profile_use : BooleanFFlag<"profile-use">, Group<clang_ignored_f_Group>;
+def fprofile_use_EQ : Joined<["-"], "fprofile-use=">, Group<clang_ignored_f_Group>;
+def fuse_ld_EQ : Joined<["-"], "fuse-ld=">, Group<clang_ignored_f_Group>;
+
+defm align_functions : BooleanFFlag<"align-functions">, Group<clang_ignored_f_Group>;
+def falign_functions_EQ : Joined<["-"], "falign-functions=">, Group<clang_ignored_f_Group>;
+
+// FIXME: This option should be supported and wired up to our diognostics, but
+// ignore it for now to avoid breaking builds that use it.
+def fdiagnostics_show_location_EQ : Joined<["-"], "fdiagnostics-show-location=">, Group<clang_ignored_f_Group>;
+
+defm eliminate_unused_debug_types : BooleanFFlag<"eliminate-unused-debug-types">, Group<clang_ignored_f_Group>;
+defm float_store : BooleanFFlag<"float-store">, Group<clang_ignored_f_Group>;
+defm function_attribute_list : BooleanFFlag<"function-attribute-list">, Group<clang_ignored_f_Group>;
+defm gcse : BooleanFFlag<"gcse">, Group<clang_ignored_f_Group>;
+defm gnu : BooleanFFlag<"gnu">, Group<clang_ignored_f_Group>;
+defm ident : BooleanFFlag<"ident">, Group<clang_ignored_f_Group>;
+defm implicit_templates : BooleanFFlag<"implicit-templates">, Group<clang_ignored_f_Group>;
+defm inline_limit : BooleanFFlag<"inline-limit">, Group<clang_ignored_f_Group>;
+defm ivopts : BooleanFFlag<"ivopts">, Group<clang_ignored_f_Group>;
+defm non_call_exceptions : BooleanFFlag<"non-call-exceptions">, Group<clang_ignored_f_Group>;
+defm permissive : BooleanFFlag<"permissive">, Group<clang_ignored_f_Group>;
+defm prefetch_loop_arrays : BooleanFFlag<"prefetch-loop-arrays">, Group<clang_ignored_f_Group>;
+defm printf : BooleanFFlag<"printf">, Group<clang_ignored_f_Group>;
+defm profile : BooleanFFlag<"profile">, Group<clang_ignored_f_Group>;
+defm profile_correction : BooleanFFlag<"profile-correction">, Group<clang_ignored_f_Group>;
+defm profile_generate_sampling : BooleanFFlag<"profile-generate-sampling">, Group<clang_ignored_f_Group>;
+defm profile_reusedist : BooleanFFlag<"profile-reusedist">, Group<clang_ignored_f_Group>;
+defm profile_values : BooleanFFlag<"profile-values">, Group<clang_ignored_f_Group>;
+defm regs_graph : BooleanFFlag<"regs-graph">, Group<clang_ignored_f_Group>;
+defm ripa : BooleanFFlag<"ripa">, Group<clang_ignored_f_Group>;
+defm rounding_math : BooleanFFlag<"rounding-math">, Group<clang_ignored_f_Group>;
+defm schedule_insns : BooleanFFlag<"schedule-insns">, Group<clang_ignored_f_Group>;
+defm see : BooleanFFlag<"see">, Group<clang_ignored_f_Group>;
+defm signaling_nans : BooleanFFlag<"signaling-nans">, Group<clang_ignored_f_Group>;
+defm spec_constr_count : BooleanFFlag<"spec-constr-count">, Group<clang_ignored_f_Group>;
+defm strength_reduce :
+    BooleanFFlag<"strength-reduce">, Group<clang_ignored_f_Group>;
+defm tls_model : BooleanFFlag<"tls-model">, Group<clang_ignored_f_Group>;
+defm tracer : BooleanFFlag<"tracer">, Group<clang_ignored_f_Group>;
+defm tree_salias : BooleanFFlag<"tree-salias">, Group<clang_ignored_f_Group>;
+defm tree_vectorizer_verbose : BooleanFFlag<"tree-vectorizer-verbose">, Group<clang_ignored_f_Group>;
+defm unroll_all_loops : BooleanFFlag<"unroll-all-loops">, Group<clang_ignored_f_Group>;
+defm unswitch_loops : BooleanFFlag<"unswitch-loops">, Group<clang_ignored_f_Group>;
+
+
+// gfortran options that we recognize in the driver and pass along when
+// invoking GCC to compile Fortran code.
+def gfortran_Group : OptionGroup<"gfortran Group">;
+
+// Generic gfortran options.
+def A_DASH : Joined<["-"], "A-">, Group<gfortran_Group>;
+def J : JoinedOrSeparate<["-"], "J">, Flags<[RenderJoined]>, Group<gfortran_Group>;
+def cpp : Flag<["-"], "cpp">, Group<gfortran_Group>;
+def nocpp : Flag<["-"], "nocpp">, Group<gfortran_Group>;
+def static_libgfortran : Flag<["-"], "static-libgfortran">, Group<gfortran_Group>;
+
+// "f" options with values for gfortran.
+def fblas_matmul_limit_EQ : Joined<["-"], "fblas-matmul-limit=">, Group<gfortran_Group>;
+def fcheck_EQ : Joined<["-"], "fcheck=">, Group<gfortran_Group>;
+def fcoarray_EQ : Joined<["-"], "fcoarray=">, Group<gfortran_Group>;
+def fconvert_EQ : Joined<["-"], "fconvert=">, Group<gfortran_Group>;
+def ffixed_line_length_VALUE : Joined<["-"], "ffixed-line-length-">, Group<gfortran_Group>;
+def ffpe_trap_EQ : Joined<["-"], "ffpe-trap=">, Group<gfortran_Group>;
+def ffree_line_length_VALUE : Joined<["-"], "ffree-line-length-">, Group<gfortran_Group>;
+def finit_character_EQ : Joined<["-"], "finit-character=">, Group<gfortran_Group>;
+def finit_integer_EQ : Joined<["-"], "finit-integer=">, Group<gfortran_Group>;
+def finit_logical_EQ : Joined<["-"], "finit-logical=">, Group<gfortran_Group>;
+def finit_real_EQ : Joined<["-"], "finit-real=">, Group<gfortran_Group>;
+def fmax_array_constructor_EQ : Joined<["-"], "fmax-array-constructor=">, Group<gfortran_Group>;
+def fmax_errors_EQ : Joined<["-"], "fmax-errors=">, Group<gfortran_Group>;
+def fmax_stack_var_size_EQ : Joined<["-"], "fmax-stack-var-size=">, Group<gfortran_Group>;
+def fmax_subrecord_length_EQ : Joined<["-"], "fmax-subrecord-length=">, Group<gfortran_Group>;
+def frecord_marker_EQ : Joined<["-"], "frecord-marker=">, Group<gfortran_Group>;
+
+// "f" flags for gfortran.
+defm aggressive_function_elimination : BooleanFFlag<"aggressive-function-elimination">, Group<gfortran_Group>;
+defm align_commons : BooleanFFlag<"align-commons">, Group<gfortran_Group>;
+defm all_intrinsics : BooleanFFlag<"all-intrinsics">, Group<gfortran_Group>;
+defm automatic : BooleanFFlag<"automatic">, Group<gfortran_Group>;
+defm backslash : BooleanFFlag<"backslash">, Group<gfortran_Group>;
+defm backtrace : BooleanFFlag<"backtrace">, Group<gfortran_Group>;
+defm bounds_check : BooleanFFlag<"bounds-check">, Group<gfortran_Group>;
+defm check_array_temporaries : BooleanFFlag<"check-array-temporaries">, Group<gfortran_Group>;
+defm cray_pointer : BooleanFFlag<"cray-pointer">, Group<gfortran_Group>;
+defm d_lines_as_code : BooleanFFlag<"d-lines-as-code">, Group<gfortran_Group>;
+defm d_lines_as_comments : BooleanFFlag<"d-lines-as-comments">, Group<gfortran_Group>;
+defm default_double_8 : BooleanFFlag<"default-double-8">, Group<gfortran_Group>;
+defm default_integer_8 : BooleanFFlag<"default-integer-8">, Group<gfortran_Group>;
+defm default_real_8 : BooleanFFlag<"default-real-8">, Group<gfortran_Group>;
+defm dollar_ok : BooleanFFlag<"dollar-ok">, Group<gfortran_Group>;
+defm dump_fortran_optimized : BooleanFFlag<"dump-fortran-optimized">, Group<gfortran_Group>;
+defm dump_fortran_original : BooleanFFlag<"dump-fortran-original">, Group<gfortran_Group>;
+defm dump_parse_tree : BooleanFFlag<"dump-parse-tree">, Group<gfortran_Group>;
+defm external_blas : BooleanFFlag<"external-blas">, Group<gfortran_Group>;
+defm f2c : BooleanFFlag<"f2c">, Group<gfortran_Group>;
+defm fixed_form : BooleanFFlag<"fixed-form">, Group<gfortran_Group>;
+defm free_form : BooleanFFlag<"free-form">, Group<gfortran_Group>;
+defm frontend_optimize : BooleanFFlag<"frontend-optimize">, Group<gfortran_Group>;
+defm implicit_none : BooleanFFlag<"implicit-none">, Group<gfortran_Group>;
+defm init_local_zero : BooleanFFlag<"init-local-zero">, Group<gfortran_Group>;
+defm integer_4_integer_8 : BooleanFFlag<"integer-4-integer-8">, Group<gfortran_Group>;
+defm intrinsic_modules_path : BooleanFFlag<"intrinsic-modules-path">, Group<gfortran_Group>;
+defm max_identifier_length : BooleanFFlag<"max-identifier-length">, Group<gfortran_Group>;
+defm module_private : BooleanFFlag<"module-private">, Group<gfortran_Group>;
+defm pack_derived : BooleanFFlag<"pack-derived">, Group<gfortran_Group>;
+defm protect_parens : BooleanFFlag<"protect-parens">, Group<gfortran_Group>;
+defm range_check : BooleanFFlag<"range-check">, Group<gfortran_Group>;
+defm real_4_real_10 : BooleanFFlag<"real-4-real-10">, Group<gfortran_Group>;
+defm real_4_real_16 : BooleanFFlag<"real-4-real-16">, Group<gfortran_Group>;
+defm real_4_real_8 : BooleanFFlag<"real-4-real-8">, Group<gfortran_Group>;
+defm real_8_real_10 : BooleanFFlag<"real-8-real-10">, Group<gfortran_Group>;
+defm real_8_real_16 : BooleanFFlag<"real-8-real-16">, Group<gfortran_Group>;
+defm real_8_real_4 : BooleanFFlag<"real-8-real-4">, Group<gfortran_Group>;
+defm realloc_lhs : BooleanFFlag<"realloc-lhs">, Group<gfortran_Group>;
+defm recursive : BooleanFFlag<"recursive">, Group<gfortran_Group>;
+defm repack_arrays : BooleanFFlag<"repack-arrays">, Group<gfortran_Group>;
+defm second_underscore : BooleanFFlag<"second-underscore">, Group<gfortran_Group>;
+defm sign_zero : BooleanFFlag<"sign-zero">, Group<gfortran_Group>;
+defm stack_arrays : BooleanFFlag<"stack-arrays">, Group<gfortran_Group>;
+defm underscoring : BooleanFFlag<"underscoring">, Group<gfortran_Group>;
+defm whole_file : BooleanFFlag<"whole-file">, Group<gfortran_Group>;
+
+
 include "CC1Options.td"
+
+include "CLCompatOptions.td"
diff --git a/include/clang/Driver/SanitizerArgs.h b/include/clang/Driver/SanitizerArgs.h
new file mode 100644
index 000000000000..35b8f89a88a7
--- /dev/null
+++ b/include/clang/Driver/SanitizerArgs.h
@@ -0,0 +1,147 @@
+//===--- SanitizerArgs.h - Arguments for sanitizer tools  -------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+#ifndef CLANG_LIB_DRIVER_SANITIZERARGS_H_
+#define CLANG_LIB_DRIVER_SANITIZERARGS_H_
+
+#include <string>
+
+#include "llvm/Option/Arg.h"
+#include "llvm/Option/ArgList.h"
+
+namespace clang {
+namespace driver {
+
+class Driver;
+class ToolChain;
+
+class SanitizerArgs {
+  /// Assign ordinals to sanitizer flags. We'll use the ordinal values as
+  /// bit positions within \c Kind.
+  enum SanitizeOrdinal {
+#define SANITIZER(NAME, ID) SO_##ID,
+#define SANITIZER_GROUP(NAME, ID, ALIAS) SO_##ID##Group,
+#include "clang/Basic/Sanitizers.def"
+    SO_Count
+  };
+
+  /// Bugs to catch at runtime.
+  enum SanitizeKind {
+#define SANITIZER(NAME, ID) ID = 1 << SO_##ID,
+#define SANITIZER_GROUP(NAME, ID, ALIAS)                                       \
+  ID = ALIAS, ID##Group = 1 << SO_##ID##Group,
+#include "clang/Basic/Sanitizers.def"
+    NeedsAsanRt = Address,
+    NeedsTsanRt = Thread,
+    NeedsMsanRt = Memory,
+    NeedsDfsanRt = DataFlow,
+    NeedsLeakDetection = Leak,
+    NeedsUbsanRt = Undefined | Integer,
+    NotAllowedWithTrap = Vptr,
+    HasZeroBaseShadow = Thread | Memory | DataFlow
+  };
+  unsigned Kind;
+
+  std::string BlacklistFile;
+  bool MsanTrackOrigins;
+  bool AsanZeroBaseShadow;
+  bool UbsanTrapOnError;
+
+ public:
+  SanitizerArgs();
+  /// Parses the sanitizer arguments from an argument list.
+  SanitizerArgs(const ToolChain &TC, const llvm::opt::ArgList &Args);
+
+  bool needsAsanRt() const { return Kind & NeedsAsanRt; }
+  bool needsTsanRt() const { return Kind & NeedsTsanRt; }
+  bool needsMsanRt() const { return Kind & NeedsMsanRt; }
+  bool needsLeakDetection() const { return Kind & NeedsLeakDetection; }
+  bool needsLsanRt() const {
+    return needsLeakDetection() && !needsAsanRt();
+  }
+  bool needsUbsanRt() const {
+    return !UbsanTrapOnError && (Kind & NeedsUbsanRt);
+  }
+  bool needsDfsanRt() const { return Kind & NeedsDfsanRt; }
+
+  bool sanitizesVptr() const { return Kind & Vptr; }
+  bool notAllowedWithTrap() const { return Kind & NotAllowedWithTrap; }
+  bool hasZeroBaseShadow() const {
+    return (Kind & HasZeroBaseShadow) || AsanZeroBaseShadow;
+  }
+  void addArgs(const llvm::opt::ArgList &Args,
+               llvm::opt::ArgStringList &CmdArgs) const;
+
+ private:
+  void clear();
+
+  /// Parse a single value from a -fsanitize= or -fno-sanitize= value list.
+  /// Returns OR of members of the \c SanitizeKind enumeration, or \c 0
+  /// if \p Value is not known.
+  static unsigned parse(const char *Value);
+
+  /// Parse a -fsanitize= or -fno-sanitize= argument's values, diagnosing any
+  /// invalid components.
+  static unsigned parse(const Driver &D, const llvm::opt::Arg *A,
+                        bool DiagnoseErrors);
+
+  /// Parse a single flag of the form -f[no]sanitize=, or
+  /// -f*-sanitizer. Sets the masks defining required change of Kind value.
+  /// Returns true if the flag was parsed successfully.
+  static bool parse(const Driver &D, const llvm::opt::ArgList &Args,
+                    const llvm::opt::Arg *A, unsigned &Add, unsigned &Remove,
+                    bool DiagnoseErrors);
+
+  /// Produce an argument string from ArgList \p Args, which shows how it
+  /// provides a sanitizer kind in \p Mask. For example, the argument list
+  /// "-fsanitize=thread,vptr -faddress-sanitizer" with mask \c NeedsUbsanRt
+  /// would produce "-fsanitize=vptr".
+  static std::string lastArgumentForKind(const Driver &D,
+                                         const llvm::opt::ArgList &Args,
+                                         unsigned Kind);
+
+  /// Produce an argument string from argument \p A, which shows how it provides
+  /// a value in \p Mask. For instance, the argument
+  /// "-fsanitize=address,alignment" with mask \c NeedsUbsanRt would produce
+  /// "-fsanitize=alignment".
+  static std::string describeSanitizeArg(const llvm::opt::ArgList &Args,
+                                         const llvm::opt::Arg *A,
+                                         unsigned Mask);
+
+  static bool getDefaultBlacklistForKind(const Driver &D, unsigned Kind,
+                                         std::string &BLPath);
+
+  /// Return the smallest superset of sanitizer set \p Kinds such that each
+  /// member of each group whose flag is set in \p Kinds has its flag set in the
+  /// result.
+  static unsigned expandGroups(unsigned Kinds);
+
+  /// Return the subset of \p Kinds supported by toolchain \p TC.  If
+  /// \p DiagnoseErrors is true, produce an error diagnostic for each sanitizer
+  /// removed from \p Kinds.
+  static unsigned filterUnsupportedKinds(const ToolChain &TC, unsigned Kinds,
+                                         const llvm::opt::ArgList &Args,
+                                         const llvm::opt::Arg *A,
+                                         bool DiagnoseErrors,
+                                         unsigned &DiagnosedKinds);
+
+  /// The flags in \p Mask are unsupported by \p TC.  If present in \p Kinds,
+  /// remove them and produce an error diagnostic referring to \p A if
+  /// \p DiagnoseErrors is true.
+  static void filterUnsupportedMask(const ToolChain &TC, unsigned &Kinds,
+                                    unsigned Mask,
+                                    const llvm::opt::ArgList &Args,
+                                    const llvm::opt::Arg *A,
+                                    bool DiagnoseErrors,
+                                    unsigned &DiagnosedKinds);
+};
+
+}  // namespace driver
+}  // namespace clang
+
+#endif // CLANG_LIB_DRIVER_SANITIZERARGS_H_
diff --git a/include/clang/Driver/Tool.h b/include/clang/Driver/Tool.h
index 4c05d0a743bc..015dcf513e0a 100644
--- a/include/clang/Driver/Tool.h
+++ b/include/clang/Driver/Tool.h
@@ -12,9 +12,15 @@
 
 #include "clang/Basic/LLVM.h"
 
+namespace llvm {
+namespace opt {
+  class ArgList;
+}
+}
+
 namespace clang {
 namespace driver {
-  class ArgList;
+
   class Compilation;
   class InputInfo;
   class Job;
@@ -57,7 +63,8 @@ public:
   virtual bool hasGoodDiagnostics() const { return false; }
 
   /// ConstructJob - Construct jobs to perform the action \p JA,
-  /// writing to \p Output and with \p Inputs.
+  /// writing to \p Output and with \p Inputs, and add the jobs to
+  /// \p C.
   ///
   /// \param TCArgs - The argument list for this toolchain, with any
   /// tool chain specific translations applied.
@@ -66,7 +73,7 @@ public:
   virtual void ConstructJob(Compilation &C, const JobAction &JA,
                             const InputInfo &Output,
                             const InputInfoList &Inputs,
-                            const ArgList &TCArgs,
+                            const llvm::opt::ArgList &TCArgs,
                             const char *LinkingOutput) const = 0;
 };
 
diff --git a/include/clang/Driver/ToolChain.h b/include/clang/Driver/ToolChain.h
index aae3d79936b6..84e0b55ba5af 100644
--- a/include/clang/Driver/ToolChain.h
+++ b/include/clang/Driver/ToolChain.h
@@ -19,16 +19,22 @@
 #include "llvm/Support/Path.h"
 #include <string>
 
+namespace llvm {
+namespace opt {
+  class ArgList;
+  class DerivedArgList;
+  class InputArgList;
+}
+}
+
 namespace clang {
   class ObjCRuntime;
 
 namespace driver {
-  class ArgList;
   class Compilation;
-  class DerivedArgList;
   class Driver;
-  class InputArgList;
   class JobAction;
+  class SanitizerArgs;
   class Tool;
 
 /// ToolChain - Access to tools for a single platform.
@@ -49,7 +55,7 @@ public:
 private:
   const Driver &D;
   const llvm::Triple Triple;
-  const ArgList &Args;
+  const llvm::opt::ArgList &Args;
 
   /// The list of toolchain specific path prefixes to search for
   /// files.
@@ -67,8 +73,11 @@ private:
   Tool *getLink() const;
   Tool *getClangAs() const;
 
+  mutable OwningPtr<SanitizerArgs> SanitizerArguments;
+
 protected:
-  ToolChain(const Driver &D, const llvm::Triple &T, const ArgList &Args);
+  ToolChain(const Driver &D, const llvm::Triple &T,
+            const llvm::opt::ArgList &Args);
 
   virtual Tool *buildAssembler() const;
   virtual Tool *buildLinker() const;
@@ -76,17 +85,18 @@ protected:
 
   /// \name Utilities for implementing subclasses.
   ///@{
-  static void addSystemInclude(const ArgList &DriverArgs,
-                               ArgStringList &CC1Args,
+  static void addSystemInclude(const llvm::opt::ArgList &DriverArgs,
+                               llvm::opt::ArgStringList &CC1Args,
                                const Twine &Path);
-  static void addExternCSystemInclude(const ArgList &DriverArgs,
-                                      ArgStringList &CC1Args,
+  static void addExternCSystemInclude(const llvm::opt::ArgList &DriverArgs,
+                                      llvm::opt::ArgStringList &CC1Args,
+                                      const Twine &Path);
+  static void
+      addExternCSystemIncludeIfExists(const llvm::opt::ArgList &DriverArgs,
+                                      llvm::opt::ArgStringList &CC1Args,
                                       const Twine &Path);
-  static void addExternCSystemIncludeIfExists(const ArgList &DriverArgs,
-                                              ArgStringList &CC1Args,
-                                              const Twine &Path);
-  static void addSystemIncludes(const ArgList &DriverArgs,
-                                ArgStringList &CC1Args,
+  static void addSystemIncludes(const llvm::opt::ArgList &DriverArgs,
+                                llvm::opt::ArgStringList &CC1Args,
                                 ArrayRef<StringRef> Paths);
   ///@}
 
@@ -117,6 +127,8 @@ public:
   path_list &getProgramPaths() { return ProgramPaths; }
   const path_list &getProgramPaths() const { return ProgramPaths; }
 
+  const SanitizerArgs& getSanitizerArgs() const;
+
   // Tool access.
 
   /// TranslateArgs - Create a new derived argument list for any argument
@@ -124,8 +136,9 @@ public:
   /// specific translations are needed.
   ///
   /// \param BoundArch - The bound architecture name, or 0.
-  virtual DerivedArgList *TranslateArgs(const DerivedArgList &Args,
-                                        const char *BoundArch) const {
+  virtual llvm::opt::DerivedArgList *
+  TranslateArgs(const llvm::opt::DerivedArgList &Args,
+                const char *BoundArch) const {
     return 0;
   }
 
@@ -137,6 +150,13 @@ public:
   std::string GetFilePath(const char *Name) const;
   std::string GetProgramPath(const char *Name) const;
 
+  /// \brief Dispatch to the specific toolchain for verbose printing.
+  ///
+  /// This is used when handling the verbose option to print detailed,
+  /// toolchain-specific information useful for understanding the behavior of
+  /// the driver on a specific platform.
+  virtual void printVerboseInfo(raw_ostream &OS) const {};
+
   // Platform defaults information
 
   /// HasNativeLTOLinker - Check whether the linker and related tools have
@@ -157,17 +177,9 @@ public:
   /// \brief Check if the toolchain should use the integrated assembler.
   bool useIntegratedAs() const;
 
-  /// IsStrictAliasingDefault - Does this tool chain use -fstrict-aliasing by
-  /// default.
-  virtual bool IsStrictAliasingDefault() const { return true; }
-
   /// IsMathErrnoDefault - Does this tool chain use -fmath-errno by default.
   virtual bool IsMathErrnoDefault() const { return true; }
 
-  /// IsObjCDefaultSynthPropertiesDefault - Does this tool chain enable
-  /// -fobjc-default-synthesize-properties by default.
-  virtual bool IsObjCDefaultSynthPropertiesDefault() const { return true; }
-  
   /// IsEncodeExtendedBlockSignatureDefault - Does this tool chain enable
   /// -fencode-extended-block-signature by default.
   virtual bool IsEncodeExtendedBlockSignatureDefault() const { return false; }
@@ -225,16 +237,18 @@ public:
 
   /// ComputeLLVMTriple - Return the LLVM target triple to use, after taking
   /// command line arguments into account.
-  virtual std::string ComputeLLVMTriple(const ArgList &Args,
-                                 types::ID InputType = types::TY_INVALID) const;
+  virtual std::string
+  ComputeLLVMTriple(const llvm::opt::ArgList &Args,
+                    types::ID InputType = types::TY_INVALID) const;
 
   /// ComputeEffectiveClangTriple - Return the Clang triple to use for this
   /// target, which may take into account the command line arguments. For
   /// example, on Darwin the -mmacosx-version-min= command line argument (which
   /// sets the deployment target) determines the version in the triple passed to
   /// Clang.
-  virtual std::string ComputeEffectiveClangTriple(const ArgList &Args,
-                                 types::ID InputType = types::TY_INVALID) const;
+  virtual std::string ComputeEffectiveClangTriple(
+      const llvm::opt::ArgList &Args,
+      types::ID InputType = types::TY_INVALID) const;
 
   /// getDefaultObjCRuntime - Return the default Objective-C runtime
   /// for this platform.
@@ -253,42 +267,46 @@ public:
   ///
   /// This routine is responsible for adding the necessary cc1 arguments to
   /// include headers from standard system header directories.
-  virtual void AddClangSystemIncludeArgs(const ArgList &DriverArgs,
-                                         ArgStringList &CC1Args) const;
+  virtual void
+  AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
+                            llvm::opt::ArgStringList &CC1Args) const;
 
   /// \brief Add options that need to be passed to cc1 for this target.
-  virtual void addClangTargetOptions(const ArgList &DriverArgs,
-                                     ArgStringList &CC1Args) const;
+  virtual void addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
+                                     llvm::opt::ArgStringList &CC1Args) const;
 
   // GetRuntimeLibType - Determine the runtime library type to use with the
   // given compilation arguments.
-  virtual RuntimeLibType GetRuntimeLibType(const ArgList &Args) const;
+  virtual RuntimeLibType
+  GetRuntimeLibType(const llvm::opt::ArgList &Args) const;
 
   // GetCXXStdlibType - Determine the C++ standard library type to use with the
   // given compilation arguments.
-  virtual CXXStdlibType GetCXXStdlibType(const ArgList &Args) const;
+  virtual CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const;
 
   /// AddClangCXXStdlibIncludeArgs - Add the clang -cc1 level arguments to set
   /// the include paths to use for the given C++ standard library type.
-  virtual void AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
-                                            ArgStringList &CC1Args) const;
+  virtual void
+  AddClangCXXStdlibIncludeArgs(const llvm::opt::ArgList &DriverArgs,
+                               llvm::opt::ArgStringList &CC1Args) const;
 
   /// AddCXXStdlibLibArgs - Add the system specific linker arguments to use
   /// for the given C++ standard library type.
-  virtual void AddCXXStdlibLibArgs(const ArgList &Args,
-                                   ArgStringList &CmdArgs) const;
+  virtual void AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args,
+                                   llvm::opt::ArgStringList &CmdArgs) const;
 
   /// AddCCKextLibArgs - Add the system specific linker arguments to use
   /// for kernel extensions (Darwin-specific).
-  virtual void AddCCKextLibArgs(const ArgList &Args,
-                                ArgStringList &CmdArgs) const;
+  virtual void AddCCKextLibArgs(const llvm::opt::ArgList &Args,
+                                llvm::opt::ArgStringList &CmdArgs) const;
 
   /// AddFastMathRuntimeIfAvailable - If a runtime library exists that sets
   /// global flags for unsafe floating point math, add it and return true.
   ///
   /// This checks for presence of the -ffast-math or -funsafe-math flags.
-  virtual bool AddFastMathRuntimeIfAvailable(const ArgList &Args,
-                                             ArgStringList &CmdArgs) const;
+  virtual bool
+  AddFastMathRuntimeIfAvailable(const llvm::opt::ArgList &Args,
+                                llvm::opt::ArgStringList &CmdArgs) const;
 };
 
 } // end namespace driver
diff --git a/include/clang/Driver/Types.def b/include/clang/Driver/Types.def
index 42f0709cf17a..d4f52d3220c8 100644
--- a/include/clang/Driver/Types.def
+++ b/include/clang/Driver/Types.def
@@ -66,7 +66,7 @@ TYPE("objective-c++-header",     ObjCXXHeader, PP_ObjCXXHeader, 0,       "pu")
 // Other languages.
 TYPE("ada",                      Ada,          INVALID,         0,       "u")
 TYPE("assembler",                PP_Asm,       INVALID,         "s",     "au")
-TYPE("assembler-with-cpp",       Asm,          PP_Asm,          0,       "au")
+TYPE("assembler-with-cpp",       Asm,          PP_Asm,          "S",     "au")
 TYPE("f95",                      PP_Fortran,   INVALID,         0,       "u")
 TYPE("f95-cpp-input",            Fortran,      PP_Fortran,      0,       "u")
 TYPE("java",                     Java,         INVALID,         0,       "u")
diff --git a/include/clang/Driver/Types.h b/include/clang/Driver/Types.h
index 18cd2d5102cf..cca576a054aa 100644
--- a/include/clang/Driver/Types.h
+++ b/include/clang/Driver/Types.h
@@ -34,7 +34,7 @@ namespace types {
 
   /// getTypeTempSuffix - Return the suffix to use when creating a
   /// temp file of this type, or null if unspecified.
-  const char *getTypeTempSuffix(ID Id);
+  const char *getTypeTempSuffix(ID Id, bool CLMode = false);
 
   /// onlyAssembleType - Should this type only be assembled.
   bool onlyAssembleType(ID Id);
@@ -78,7 +78,7 @@ namespace types {
   /// done for type 'Id'.
   void getCompilationPhases(
     ID Id,
-    llvm::SmallVector<phases::ID, phases::MaxNumberOfPhases> &Phases);
+    llvm::SmallVectorImpl<phases::ID> &Phases);
 
   /// lookupCXXTypeForCType - Lookup CXX input type that corresponds to given
   /// C type (used for clang++ emulation of g++ behaviour)
diff --git a/include/clang/Driver/Util.h b/include/clang/Driver/Util.h
index 06b82b977fe0..b24b9904f2b5 100644
--- a/include/clang/Driver/Util.h
+++ b/include/clang/Driver/Util.h
@@ -14,13 +14,12 @@
 #include "llvm/ADT/DenseMap.h"
 
 namespace clang {
+class DiagnosticsEngine;
+
 namespace driver {
   class Action;
   class JobAction;
 
-  /// ArgStringList - Type used for constructing argv lists for subprocesses.
-  typedef SmallVector<const char*, 16> ArgStringList;
-
   /// ArgStringMap - Type used to map a JobAction to its result file.
   typedef llvm::DenseMap<const JobAction*, const char*> ArgStringMap;
 
diff --git a/include/clang/Edit/Commit.h b/include/clang/Edit/Commit.h
index 48e3d593aa54..626b1dd6305e 100644
--- a/include/clang/Edit/Commit.h
+++ b/include/clang/Edit/Commit.h
@@ -13,6 +13,7 @@
 #include "clang/Edit/FileOffset.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringRef.h"
+#include "llvm/Support/Allocator.h"
 
 namespace clang {
   class LangOptions;
@@ -48,16 +49,19 @@ private:
   const LangOptions &LangOpts;
   const PPConditionalDirectiveRecord *PPRec;
   EditedSource *Editor;
-
+  
+  const bool ForceCommitInSystemHeader;
   bool IsCommitable;
   SmallVector<Edit, 8> CachedEdits;
+  
+  llvm::BumpPtrAllocator StrAlloc;
 
 public:
   explicit Commit(EditedSource &Editor);
   Commit(const SourceManager &SM, const LangOptions &LangOpts,
          const PPConditionalDirectiveRecord *PPRec = 0)
     : SourceMgr(SM), LangOpts(LangOpts), PPRec(PPRec), Editor(0),
-      IsCommitable(true) { }
+      ForceCommitInSystemHeader(true), IsCommitable(true) { }
 
   bool isCommitable() const { return IsCommitable; }
 
@@ -103,7 +107,7 @@ public:
                             CharSourceRange::getTokenRange(TokenInnerRange));
   }
 
-  typedef SmallVector<Edit, 8>::const_iterator edit_iterator;
+  typedef SmallVectorImpl<Edit>::const_iterator edit_iterator;
   edit_iterator edit_begin() const { return CachedEdits.begin(); }
   edit_iterator edit_end() const { return CachedEdits.end(); }
 
@@ -131,6 +135,12 @@ private:
                                  SourceLocation *MacroBegin = 0) const;
   bool isAtEndOfMacroExpansion(SourceLocation loc,
                                SourceLocation *MacroEnd = 0) const;
+
+  StringRef copyString(StringRef str) {
+    char *buf = StrAlloc.Allocate<char>(str.size());
+    std::memcpy(buf, str.data(), str.size());
+    return StringRef(buf, str.size());
+  }
 };
 
 }
diff --git a/include/clang/Edit/EditedSource.h b/include/clang/Edit/EditedSource.h
index 733ad400c934..3ad5a6be1464 100644
--- a/include/clang/Edit/EditedSource.h
+++ b/include/clang/Edit/EditedSource.h
@@ -28,6 +28,7 @@ class EditedSource {
   const SourceManager &SourceMgr;
   const LangOptions &LangOpts;
   const PPConditionalDirectiveRecord *PPRec;
+  const bool ForceCommitInSystemHeader;
 
   struct FileEdit {
     StringRef Text;
@@ -45,8 +46,10 @@ class EditedSource {
 
 public:
   EditedSource(const SourceManager &SM, const LangOptions &LangOpts,
-               const PPConditionalDirectiveRecord *PPRec = 0)
+               const PPConditionalDirectiveRecord *PPRec = 0,
+               const bool FCommitInSystemHeader = true)
     : SourceMgr(SM), LangOpts(LangOpts), PPRec(PPRec),
+      ForceCommitInSystemHeader(FCommitInSystemHeader),
       StrAlloc(/*size=*/512) { }
 
   const SourceManager &getSourceManager() const { return SourceMgr; }
@@ -54,6 +57,10 @@ public:
   const PPConditionalDirectiveRecord *getPPCondDirectiveRecord() const {
     return PPRec;
   }
+  
+  bool getForceCommitInSystemHeader() const {
+    return ForceCommitInSystemHeader;
+  }
 
   bool canInsertInOffset(SourceLocation OrigLoc, FileOffset Offs);
 
diff --git a/include/clang/Edit/Rewriters.h b/include/clang/Edit/Rewriters.h
index 292878e75695..5e3425f56f73 100644
--- a/include/clang/Edit/Rewriters.h
+++ b/include/clang/Edit/Rewriters.h
@@ -9,10 +9,16 @@
 
 #ifndef LLVM_CLANG_EDIT_REWRITERS_H
 #define LLVM_CLANG_EDIT_REWRITERS_H
+#include "llvm/ADT/SmallVector.h"
 
 namespace clang {
   class ObjCMessageExpr;
+  class ObjCMethodDecl;
+  class ObjCInterfaceDecl;
+  class ObjCProtocolDecl;
   class NSAPI;
+  class EnumDecl;
+  class TypedefDecl;
   class ParentMap;
 
 namespace edit {
@@ -24,7 +30,7 @@ bool rewriteObjCRedundantCallWithLiteral(const ObjCMessageExpr *Msg,
 bool rewriteToObjCLiteralSyntax(const ObjCMessageExpr *Msg,
                                 const NSAPI &NS, Commit &commit,
                                 const ParentMap *PMap);
-
+  
 bool rewriteToObjCSubscriptSyntax(const ObjCMessageExpr *Msg,
                                   const NSAPI &NS, Commit &commit);
 
diff --git a/include/clang/Format/Format.h b/include/clang/Format/Format.h
index 5304dc7ba228..0f2746712a69 100644
--- a/include/clang/Format/Format.h
+++ b/include/clang/Format/Format.h
@@ -17,6 +17,7 @@
 
 #include "clang/Frontend/FrontendAction.h"
 #include "clang/Tooling/Refactoring.h"
+#include "llvm/Support/system_error.h"
 
 namespace clang {
 
@@ -30,13 +31,29 @@ namespace format {
 /// specific guidelines.
 struct FormatStyle {
   /// \brief The column limit.
+  ///
+  /// A column limit of \c 0 means that there is no column limit. In this case,
+  /// clang-format will respect the input's line breaking decisions within
+  /// statements.
   unsigned ColumnLimit;
 
+  /// \brief The maximum number of consecutive empty lines to keep.
+  unsigned MaxEmptyLinesToKeep;
+
+  /// \brief The penalty for each line break introduced inside a comment.
+  unsigned PenaltyBreakComment;
+
+  /// \brief The penalty for each line break introduced inside a string literal.
+  unsigned PenaltyBreakString;
+
   /// \brief The penalty for each character outside of the column limit.
   unsigned PenaltyExcessCharacter;
 
-  /// \brief The maximum number of consecutive empty lines to keep.
-  unsigned MaxEmptyLinesToKeep;
+  /// \brief The penalty for breaking before the first \c <<.
+  unsigned PenaltyBreakFirstLessLess;
+
+  /// \brief The penalty for breaking a function call after "call(".
+  unsigned PenaltyBreakBeforeFirstCallParameter;
 
   /// \brief Set whether & and * bind to the type as opposed to the variable.
   bool PointerBindsToType;
@@ -44,32 +61,62 @@ struct FormatStyle {
   /// \brief If \c true, analyze the formatted file for the most common binding.
   bool DerivePointerBinding;
 
-  /// \brief The extra indent or outdent of access modifiers (e.g.: public:).
+  /// \brief The extra indent or outdent of access modifiers, e.g. \c public:.
   int AccessModifierOffset;
 
+  /// \brief Supported language standards.
   enum LanguageStandard {
+    /// Use C++03-compatible syntax.
     LS_Cpp03,
+    /// Use features of C++11 (e.g. \c A<A<int>> instead of
+    /// <tt>A<A<int> ></tt>).
     LS_Cpp11,
+    /// Automatic detection based on the input.
     LS_Auto
   };
 
-  /// \brief Format compatible with this standard, e.g. use \c A<A<int> >
-  /// instead of \c A<A<int>> for LS_Cpp03.
+  /// \brief Format compatible with this standard, e.g. use
+  /// <tt>A<A<int> ></tt> instead of \c A<A<int>> for LS_Cpp03.
   LanguageStandard Standard;
 
   /// \brief Indent case labels one level from the switch statement.
   ///
-  /// When false, use the same indentation level as for the switch statement.
+  /// When \c false, use the same indentation level as for the switch statement.
   /// Switch statement body is always indented one level more than case labels.
   bool IndentCaseLabels;
 
+  /// \brief Different ways to indent namespace contents.
+  enum NamespaceIndentationKind {
+    /// Don't indent in namespaces.
+    NI_None,
+    /// Indent only in inner namespaces (nested in other namespaces).
+    NI_Inner,
+    /// Indent in all namespaces.
+    NI_All
+  };
+
+  /// \brief The indentation used for namespaces.
+  NamespaceIndentationKind NamespaceIndentation;
+
   /// \brief The number of spaces to before trailing line comments.
   unsigned SpacesBeforeTrailingComments;
 
-  /// \brief If false, a function call's or function definition's parameters
+  /// \brief If \c false, a function call's or function definition's parameters
   /// will either all be on the same line or will have one line each.
   bool BinPackParameters;
 
+  /// \brief If \c true, clang-format detects whether function calls and
+  /// definitions are formatted with one parameter per line.
+  ///
+  /// Each call can be bin-packed, one-per-line or inconclusive. If it is
+  /// inconclusive, e.g. completely on one line, but a decision needs to be
+  /// made, clang-format analyzes whether there are other bin-packed cases in
+  /// the input file and act accordingly.
+  ///
+  /// NOTE: This is an experimental flag, that might go away or be renamed. Do
+  /// not use this in config files, etc. Use at your own risk.
+  bool ExperimentalAutoDetectBinPacking;
+
   /// \brief Allow putting all parameters of a function declaration onto
   /// the next line even if \c BinPackParameters is \c false.
   bool AllowAllParametersOfDeclarationOnNextLine;
@@ -82,16 +129,176 @@ struct FormatStyle {
   /// initializer on its own line.
   bool ConstructorInitializerAllOnOneLineOrOnePerLine;
 
-  /// \brief If true, "if (a) return;" can be put on a single line.
+  /// \brief Always break constructor initializers before commas and align
+  /// the commas with the colon.
+  bool BreakConstructorInitializersBeforeComma;
+
+  /// \brief If \c true, <tt>if (a) return;</tt> can be put on a single
+  /// line.
   bool AllowShortIfStatementsOnASingleLine;
 
+  /// \brief If \c true, <tt>while (true) continue;</tt> can be put on a
+  /// single line.
+  bool AllowShortLoopsOnASingleLine;
+
   /// \brief Add a space in front of an Objective-C protocol list, i.e. use
-  /// Foo <Protocol> instead of Foo<Protocol>.
+  /// <tt>Foo <Protocol></tt> instead of \c Foo<Protocol>.
   bool ObjCSpaceBeforeProtocolList;
 
+  /// \brief If \c true, aligns trailing comments.
+  bool AlignTrailingComments;
+
   /// \brief If \c true, aligns escaped newlines as far left as possible.
   /// Otherwise puts them into the right-most column.
   bool AlignEscapedNewlinesLeft;
+
+  /// \brief The number of columns to use for indentation.
+  unsigned IndentWidth;
+
+  /// \brief The number of columns used for tab stops.
+  unsigned TabWidth;
+
+  /// \brief The number of characters to use for indentation of constructor
+  /// initializer lists.
+  unsigned ConstructorInitializerIndentWidth;
+
+  /// \brief If \c true, always break after the <tt>template<...></tt> of a
+  /// template declaration.
+  bool AlwaysBreakTemplateDeclarations;
+
+  /// \brief If \c true, always break before multiline string literals.
+  bool AlwaysBreakBeforeMultilineStrings;
+
+  /// \brief Different ways to use tab in formatting.
+  enum UseTabStyle {
+    /// Never use tab.
+    UT_Never,
+    /// Use tabs only for indentation.
+    UT_ForIndentation,
+    /// Use tabs whenever we need to fill whitespace that spans at least from
+    /// one tab stop to the next one.
+    UT_Always
+  };
+
+  /// \brief The way to use tab characters in the resulting file.
+  UseTabStyle UseTab;
+
+  /// \brief If \c true, binary operators will be placed after line breaks.
+  bool BreakBeforeBinaryOperators;
+
+  /// \brief If \c true, ternary operators will be placed after line breaks.
+  bool BreakBeforeTernaryOperators;
+
+  /// \brief Different ways to attach braces to their surrounding context.
+  enum BraceBreakingStyle {
+    /// Always attach braces to surrounding context.
+    BS_Attach,
+    /// Like \c Attach, but break before braces on function, namespace and
+    /// class definitions.
+    BS_Linux,
+    /// Like \c Attach, but break before function definitions.
+    BS_Stroustrup,
+    /// Always break before braces.
+    BS_Allman
+  };
+
+  /// \brief The brace breaking style to use.
+  BraceBreakingStyle BreakBeforeBraces;
+
+  /// \brief If \c true, format braced lists as best suited for C++11 braced
+  /// lists.
+  ///
+  /// Important differences:
+  /// - No spaces inside the braced list.
+  /// - No line break before the closing brace.
+  /// - Indentation with the continuation indent, not with the block indent.
+  ///
+  /// Fundamentally, C++11 braced lists are formatted exactly like function
+  /// calls would be formatted in their place. If the braced list follows a name
+  /// (e.g. a type or variable name), clang-format formats as if the \c {} were
+  /// the parentheses of a function call with that name. If there is no name,
+  /// a zero-length name is assumed.
+  bool Cpp11BracedListStyle;
+
+  /// \brief If \c true, indent when breaking function declarations which
+  /// are not also definitions after the type.
+  bool IndentFunctionDeclarationAfterType;
+
+  /// \brief If \c true, spaces will be inserted after '(' and before ')'.
+  bool SpacesInParentheses;
+
+  /// \brief If \c true, spaces will be inserted after '<' and before '>' in
+  /// template argument lists
+  bool SpacesInAngles;
+
+  /// \brief If \c false, spaces may be inserted into '()'.
+  bool SpaceInEmptyParentheses;
+
+  /// \brief If \c false, spaces may be inserted into C style casts.
+  bool SpacesInCStyleCastParentheses;
+
+  /// \brief If \c true, spaces will be inserted between 'for'/'if'/'while'/...
+  /// and '('.
+  bool SpaceAfterControlStatementKeyword;
+
+  /// \brief If \c false, spaces will be removed before assignment operators.
+  bool SpaceBeforeAssignmentOperators;
+
+  /// \brief Indent width for line continuations.
+  unsigned ContinuationIndentWidth;
+
+  bool operator==(const FormatStyle &R) const {
+    return AccessModifierOffset == R.AccessModifierOffset &&
+           ConstructorInitializerIndentWidth ==
+               R.ConstructorInitializerIndentWidth &&
+           AlignEscapedNewlinesLeft == R.AlignEscapedNewlinesLeft &&
+           AlignTrailingComments == R.AlignTrailingComments &&
+           AllowAllParametersOfDeclarationOnNextLine ==
+               R.AllowAllParametersOfDeclarationOnNextLine &&
+           AllowShortIfStatementsOnASingleLine ==
+               R.AllowShortIfStatementsOnASingleLine &&
+           AllowShortLoopsOnASingleLine == R.AllowShortLoopsOnASingleLine &&
+           AlwaysBreakTemplateDeclarations ==
+               R.AlwaysBreakTemplateDeclarations &&
+           AlwaysBreakBeforeMultilineStrings ==
+               R.AlwaysBreakBeforeMultilineStrings &&
+           BinPackParameters == R.BinPackParameters &&
+           BreakBeforeBinaryOperators == R.BreakBeforeBinaryOperators &&
+           BreakBeforeTernaryOperators == R.BreakBeforeTernaryOperators &&
+           BreakBeforeBraces == R.BreakBeforeBraces &&
+           BreakConstructorInitializersBeforeComma ==
+               R.BreakConstructorInitializersBeforeComma &&
+           ColumnLimit == R.ColumnLimit &&
+           ConstructorInitializerAllOnOneLineOrOnePerLine ==
+               R.ConstructorInitializerAllOnOneLineOrOnePerLine &&
+           DerivePointerBinding == R.DerivePointerBinding &&
+           ExperimentalAutoDetectBinPacking ==
+               R.ExperimentalAutoDetectBinPacking &&
+           IndentCaseLabels == R.IndentCaseLabels &&
+           IndentFunctionDeclarationAfterType ==
+               R.IndentFunctionDeclarationAfterType &&
+           IndentWidth == R.IndentWidth &&
+           MaxEmptyLinesToKeep == R.MaxEmptyLinesToKeep &&
+           NamespaceIndentation == R.NamespaceIndentation &&
+           ObjCSpaceBeforeProtocolList == R.ObjCSpaceBeforeProtocolList &&
+           PenaltyBreakComment == R.PenaltyBreakComment &&
+           PenaltyBreakFirstLessLess == R.PenaltyBreakFirstLessLess &&
+           PenaltyBreakString == R.PenaltyBreakString &&
+           PenaltyExcessCharacter == R.PenaltyExcessCharacter &&
+           PenaltyReturnTypeOnItsOwnLine == R.PenaltyReturnTypeOnItsOwnLine &&
+           PointerBindsToType == R.PointerBindsToType &&
+           SpacesBeforeTrailingComments == R.SpacesBeforeTrailingComments &&
+           Cpp11BracedListStyle == R.Cpp11BracedListStyle &&
+           Standard == R.Standard && TabWidth == R.TabWidth &&
+           UseTab == R.UseTab && SpacesInParentheses == R.SpacesInParentheses &&
+           SpacesInAngles == R.SpacesInAngles &&
+           SpaceInEmptyParentheses == R.SpaceInEmptyParentheses &&
+           SpacesInCStyleCastParentheses == R.SpacesInCStyleCastParentheses &&
+           SpaceAfterControlStatementKeyword ==
+               R.SpaceAfterControlStatementKeyword &&
+           SpaceBeforeAssignmentOperators == R.SpaceBeforeAssignmentOperators &&
+           ContinuationIndentWidth == R.ContinuationIndentWidth;
+  }
 };
 
 /// \brief Returns a format style complying with the LLVM coding standards:
@@ -110,6 +317,24 @@ FormatStyle getChromiumStyle();
 /// https://developer.mozilla.org/en-US/docs/Developer_Guide/Coding_Style.
 FormatStyle getMozillaStyle();
 
+/// \brief Returns a format style complying with Webkit's style guide:
+/// http://www.webkit.org/coding/coding-style.html
+FormatStyle getWebKitStyle();
+
+/// \brief Gets a predefined style by name.
+///
+/// Currently supported names: LLVM, Google, Chromium, Mozilla. Names are
+/// compared case-insensitively.
+///
+/// Returns \c true if the Style has been set.
+bool getPredefinedStyle(StringRef Name, FormatStyle *Style);
+
+/// \brief Parse configuration from YAML-formatted text.
+llvm::error_code parseConfiguration(StringRef Text, FormatStyle *Style);
+
+/// \brief Gets configuration in a YAML string.
+std::string configurationAsText(const FormatStyle &Style);
+
 /// \brief Reformats the given \p Ranges in the token stream coming out of
 /// \c Lex.
 ///
@@ -117,18 +342,49 @@ FormatStyle getMozillaStyle();
 /// everything that might influence its formatting or might be influenced by its
 /// formatting.
 ///
-/// \param DiagClient A custom DiagnosticConsumer. Can be 0, in this case
-/// diagnostic is output to llvm::errs().
-///
 /// Returns the \c Replacements necessary to make all \p Ranges comply with
 /// \p Style.
 tooling::Replacements reformat(const FormatStyle &Style, Lexer &Lex,
                                SourceManager &SourceMgr,
-                               std::vector<CharSourceRange> Ranges,
-                               DiagnosticConsumer *DiagClient = 0);
+                               std::vector<CharSourceRange> Ranges);
+
+/// \brief Reformats the given \p Ranges in \p Code.
+///
+/// Otherwise identical to the reformat() function consuming a \c Lexer.
+tooling::Replacements reformat(const FormatStyle &Style, StringRef Code,
+                               std::vector<tooling::Range> Ranges,
+                               StringRef FileName = "<stdin>");
 
 /// \brief Returns the \c LangOpts that the formatter expects you to set.
-LangOptions getFormattingLangOpts();
+///
+/// \param Standard determines lexing mode: LC_Cpp11 and LS_Auto turn on C++11
+/// lexing mode, LS_Cpp03 - C++03 mode.
+LangOptions getFormattingLangOpts(FormatStyle::LanguageStandard Standard =
+                                      FormatStyle::LS_Cpp11);
+
+/// \brief Description to be used for help text for a llvm::cl option for
+/// specifying format style. The description is closely related to the operation
+/// of getStyle().
+extern const char *StyleOptionHelpDescription;
+
+/// \brief Construct a FormatStyle based on \c StyleName.
+///
+/// \c StyleName can take several forms:
+/// \li "{<key>: <value>, ...}" - Set specic style parameters.
+/// \li "<style name>" - One of the style names supported by
+/// getPredefinedStyle().
+/// \li "file" - Load style configuration from a file called '.clang-format'
+/// located in one of the parent directories of \c FileName or the current
+/// directory if \c FileName is empty.
+///
+/// \param[in] StyleName Style name to interpret according to the description
+/// above.
+/// \param[in] FileName Path to start search for .clang-format if \c StyleName
+/// == "file".
+///
+/// \returns FormatStyle as specified by \c StyleName. If no style could be
+/// determined, the default is LLVM Style (see getLLVMStyle()).
+FormatStyle getStyle(StringRef StyleName, StringRef FileName);
 
 } // end namespace format
 } // end namespace clang
diff --git a/include/clang/Frontend/ASTConsumers.h b/include/clang/Frontend/ASTConsumers.h
index 3731478403ef..366c499b67f5 100644
--- a/include/clang/Frontend/ASTConsumers.h
+++ b/include/clang/Frontend/ASTConsumers.h
@@ -16,9 +16,6 @@
 
 #include "clang/Basic/LLVM.h"
 
-namespace llvm {
-  namespace sys { class Path; }
-}
 namespace clang {
 
 class ASTConsumer;
@@ -37,16 +34,12 @@ ASTConsumer *CreateASTPrinter(raw_ostream *OS, StringRef FilterString);
 
 // AST dumper: dumps the raw AST in human-readable form to stderr; this is
 // intended for debugging.
-ASTConsumer *CreateASTDumper(StringRef FilterString);
+ASTConsumer *CreateASTDumper(StringRef FilterString, bool DumpLookups = false);
 
 // AST Decl node lister: prints qualified names of all filterable AST Decl
 // nodes.
 ASTConsumer *CreateASTDeclNodeLister();
 
-// AST XML-dumper: dumps out the AST to stderr in a very detailed XML
-// format; this is intended for particularly intense debugging.
-ASTConsumer *CreateASTDumperXML(raw_ostream &OS);
-
 // Graphical AST viewer: for each function definition, creates a graph of
 // the AST and displays it with the graph viewer "dotty".  Also outputs
 // function declarations to stderr.
diff --git a/include/clang/Frontend/ASTUnit.h b/include/clang/Frontend/ASTUnit.h
index 02c57d7472a5..43d77f0171e9 100644
--- a/include/clang/Frontend/ASTUnit.h
+++ b/include/clang/Frontend/ASTUnit.h
@@ -25,7 +25,6 @@
 #include "clang/Lex/ModuleLoader.h"
 #include "clang/Lex/PreprocessingRecord.h"
 #include "clang/Sema/CodeCompleteConsumer.h"
-#include "clang/Sema/Sema.h"
 #include "clang/Serialization/ASTBitCodes.h"
 #include "llvm/ADT/IntrusiveRefCntPtr.h"
 #include "llvm/ADT/OwningPtr.h"
@@ -44,6 +43,7 @@ namespace llvm {
 }
 
 namespace clang {
+class Sema;
 class ASTContext;
 class ASTReader;
 class CodeCompleteConsumer;
@@ -75,6 +75,7 @@ private:
   IntrusiveRefCntPtr<TargetOptions>       TargetOpts;
   IntrusiveRefCntPtr<HeaderSearchOptions> HSOpts;
   ASTReader *Reader;
+  bool HadModuleLoaderFatalFailure;
 
   struct ASTWriterData;
   OwningPtr<ASTWriterData> WriterData;
@@ -456,7 +457,7 @@ public:
   void setASTContext(ASTContext *ctx) { Ctx = ctx; }
   void setPreprocessor(Preprocessor *pp);
 
-  bool hasSema() const { return TheSema; }
+  bool hasSema() const { return TheSema.isValid(); }
   Sema &getSema() const { 
     assert(TheSema && "ASTUnit does not have a Sema object!");
     return *TheSema; 
@@ -471,13 +472,14 @@ public:
     return OriginalSourceFile;
   }
 
+  ASTMutationListener *getASTMutationListener();
   ASTDeserializationListener *getDeserializationListener();
 
   /// \brief Add a temporary file that the ASTUnit depends on.
   ///
   /// This file will be erased when the ASTUnit is destroyed.
-  void addTemporaryFile(const llvm::sys::Path &TempFile);
-                        
+  void addTemporaryFile(StringRef TempFile);
+
   bool getOnlyLocalDecls() const { return OnlyLocalDecls; }
 
   bool getOwnsRemappedFileBuffers() const { return OwnsRemappedFileBuffers; }
@@ -697,10 +699,10 @@ public:
   /// lifetime is expected to extend past that of the returned ASTUnit.
   ///
   /// \param Action - The ASTFrontendAction to invoke. Its ownership is not
-  /// transfered.
+  /// transferred.
   ///
   /// \param Unit - optionally an already created ASTUnit. Its ownership is not
-  /// transfered.
+  /// transferred.
   ///
   /// \param Persistent - if true the returned ASTUnit will be complete.
   /// false means the caller is only interested in getting info through the
diff --git a/include/clang/Frontend/CodeGenOptions.def b/include/clang/Frontend/CodeGenOptions.def
index f6e2472cb9b7..78b825dc14ff 100644
--- a/include/clang/Frontend/CodeGenOptions.def
+++ b/include/clang/Frontend/CodeGenOptions.def
@@ -39,11 +39,12 @@ CODEGENOPT(CXXCtorDtorAliases, 1, 0) ///< Emit complete ctors/dtors as linker
                                      ///< aliases to base ctors when possible.
 CODEGENOPT(DataSections      , 1, 0) ///< Set when -fdata-sections is enabled.
 CODEGENOPT(DisableFPElim     , 1, 0) ///< Set when -fomit-frame-pointer is enabled.
+CODEGENOPT(DisableFree       , 1, 0) ///< Don't free memory.
+CODEGENOPT(DisableGCov       , 1, 0) ///< Don't run the GCov pass, for testing.
 CODEGENOPT(DisableLLVMOpts   , 1, 0) ///< Don't run any optimizations, for use in
                                      ///< getting .bc files that correspond to the
                                      ///< internal state before optimizations are
                                      ///< done.
-CODEGENOPT(DisableGCov       , 1, 0) ///< Don't run the GCov pass, for testing.
 CODEGENOPT(DisableRedZone    , 1, 0) ///< Set when -mno-red-zone is enabled.
 CODEGENOPT(DisableTailCalls  , 1, 0) ///< Do not emit tail calls.
 CODEGENOPT(EmitDeclMetadata  , 1, 0) ///< Emit special metadata indicating what
@@ -85,6 +86,10 @@ CODEGENOPT(OmitLeafFramePointer , 1, 0) ///< Set when -momit-leaf-frame-pointer
                                         ///< enabled.
 VALUE_CODEGENOPT(OptimizationLevel, 3, 0) ///< The -O[0-4] option specified.
 VALUE_CODEGENOPT(OptimizeSize, 2, 0) ///< If -Os (==1) or -Oz (==2) is specified.
+
+  /// If -fpcc-struct-return or -freg-struct-return is specified.
+ENUM_CODEGENOPT(StructReturnConvention, StructReturnConventionKind, 2, SRCK_Default)
+
 CODEGENOPT(RelaxAll          , 1, 0) ///< Relax all machine code instructions.
 CODEGENOPT(RelaxedAliasing   , 1, 0) ///< Set when -fno-strict-aliasing is enabled.
 CODEGENOPT(StructPathTBAA    , 1, 0) ///< Whether or not to use struct-path TBAA.
@@ -102,8 +107,12 @@ CODEGENOPT(TimePasses        , 1, 0) ///< Set when -ftime-report is enabled.
 CODEGENOPT(UnitAtATime       , 1, 1) ///< Unused. For mirroring GCC optimization
                                      ///< selection.
 CODEGENOPT(UnrollLoops       , 1, 0) ///< Control whether loops are unrolled.
+CODEGENOPT(RerollLoops       , 1, 0) ///< Control whether loops are rerolled.
 CODEGENOPT(UnsafeFPMath      , 1, 0) ///< Allow unsafe floating point optzns.
 CODEGENOPT(UnwindTables      , 1, 0) ///< Emit unwind tables.
+CODEGENOPT(VectorizeBB       , 1, 0) ///< Run basic block vectorizer.
+CODEGENOPT(VectorizeLoop     , 1, 0) ///< Run loop vectorizer.
+CODEGENOPT(VectorizeSLP      , 1, 0) ///< Run SLP vectorizer.
 
   /// Attempt to use register sized accesses to bit-fields in structures, when
   /// possible.
@@ -131,6 +140,9 @@ VALUE_CODEGENOPT(SSPBufferSize, 32, 0)
 /// The kind of generated debug info.
 ENUM_CODEGENOPT(DebugInfo, DebugInfoKind, 2, NoDebugInfo)
 
+/// Dwarf version.
+VALUE_CODEGENOPT(DwarfVersion, 3, 0)
+
 /// The kind of inlining to perform.
 ENUM_CODEGENOPT(Inlining, InliningMethod, 2, NoInlining)
 
diff --git a/include/clang/Frontend/CodeGenOptions.h b/include/clang/Frontend/CodeGenOptions.h
index db6b4186731c..86aabf7b95ec 100644
--- a/include/clang/Frontend/CodeGenOptions.h
+++ b/include/clang/Frontend/CodeGenOptions.h
@@ -71,6 +71,12 @@ public:
     FPC_Fast        // Aggressively fuse FP ops (E.g. FMA).
   };
 
+  enum StructReturnConventionKind {
+    SRCK_Default,  // No special option was passed.
+    SRCK_OnStack,  // Small structs on the stack (-fpcc-struct-return).
+    SRCK_InRegs    // Small structs in registers (-freg-struct-return).
+  };
+
   /// The code model to use (-mcmodel).
   std::string CodeModel;
 
@@ -122,6 +128,12 @@ public:
   /// A list of command-line options to forward to the LLVM backend.
   std::vector<std::string> BackendOptions;
 
+  /// A list of dependent libraries.
+  std::vector<std::string> DependentLibraries;
+
+  /// Name of the profile file to use with -fprofile-sample-use.
+  std::string SampleProfileFile;
+
 public:
   // Define accessors/mutators for code generation options of enumeration type.
 #define CODEGENOPT(Name, Bits, Default)
diff --git a/include/clang/Frontend/CompilerInstance.h b/include/clang/Frontend/CompilerInstance.h
index dbd76066b94e..5673c5908d78 100644
--- a/include/clang/Frontend/CompilerInstance.h
+++ b/include/clang/Frontend/CompilerInstance.h
@@ -395,7 +395,7 @@ public:
   /// @name ASTConsumer
   /// {
 
-  bool hasASTConsumer() const { return Consumer != 0; }
+  bool hasASTConsumer() const { return Consumer.isValid(); }
 
   ASTConsumer &getASTConsumer() const {
     assert(Consumer && "Compiler instance has no AST consumer!");
@@ -413,7 +413,7 @@ public:
   /// }
   /// @name Semantic analysis
   /// {
-  bool hasSema() const { return TheSema != 0; }
+  bool hasSema() const { return TheSema.isValid(); }
   
   Sema &getSema() const { 
     assert(TheSema && "Compiler instance has no Sema object!");
@@ -433,7 +433,9 @@ public:
   /// @name Code Completion
   /// {
 
-  bool hasCodeCompletionConsumer() const { return CompletionConsumer != 0; }
+  bool hasCodeCompletionConsumer() const {
+    return CompletionConsumer.isValid();
+  }
 
   CodeCompleteConsumer &getCodeCompletionConsumer() const {
     assert(CompletionConsumer &&
@@ -455,7 +457,7 @@ public:
   /// @name Frontend timer
   /// {
 
-  bool hasFrontendTimer() const { return FrontendTimer != 0; }
+  bool hasFrontendTimer() const { return FrontendTimer.isValid(); }
 
   llvm::Timer &getFrontendTimer() const {
     assert(FrontendTimer && "Compiler instance has no frontend timer!");
@@ -589,10 +591,10 @@ public:
   /// \return - Null on error.
   llvm::raw_fd_ostream *
   createOutputFile(StringRef OutputPath,
-                   bool Binary = true, bool RemoveFileOnSignal = true,
-                   StringRef BaseInput = "",
-                   StringRef Extension = "",
-                   bool UseTemporary = false,
+                   bool Binary, bool RemoveFileOnSignal,
+                   StringRef BaseInput,
+                   StringRef Extension,
+                   bool UseTemporary,
                    bool CreateMissingDirectories = false);
 
   /// Create a new output file, optionally deriving the output path name.
@@ -622,13 +624,13 @@ public:
   /// will be stored here on success.
   static llvm::raw_fd_ostream *
   createOutputFile(StringRef OutputPath, std::string &Error,
-                   bool Binary = true, bool RemoveFileOnSignal = true,
-                   StringRef BaseInput = "",
-                   StringRef Extension = "",
-                   bool UseTemporary = false,
-                   bool CreateMissingDirectories = false,
-                   std::string *ResultPathName = 0,
-                   std::string *TempPathName = 0);
+                   bool Binary, bool RemoveFileOnSignal,
+                   StringRef BaseInput,
+                   StringRef Extension,
+                   bool UseTemporary,
+                   bool CreateMissingDirectories,
+                   std::string *ResultPathName,
+                   std::string *TempPathName);
 
   /// }
   /// @name Initialization Utility Methods
@@ -662,6 +664,10 @@ public:
                                  SourceLocation ImportLoc,
                                  bool Complain);
 
+  bool hadModuleLoaderFatalFailure() const {
+    return ModuleLoader::HadFatalFailure;
+  }
+
 };
 
 } // end namespace clang
diff --git a/include/clang/Frontend/CompilerInvocation.h b/include/clang/Frontend/CompilerInvocation.h
index fac05c55fbb1..f64773c2c4bd 100644
--- a/include/clang/Frontend/CompilerInvocation.h
+++ b/include/clang/Frontend/CompilerInvocation.h
@@ -29,15 +29,16 @@
 #include <string>
 #include <vector>
 
-namespace clang {
+namespace llvm {
+namespace opt {
+class ArgList;
+}
+}
 
+namespace clang {
 class CompilerInvocation;
 class DiagnosticsEngine;
 
-namespace driver {
-class ArgList;
-}
-
 /// \brief Fill out Opts based on the options given in Args.
 ///
 /// Args must have been created from the OptTable returned by
@@ -45,9 +46,9 @@ class ArgList;
 ///
 /// When errors are encountered, return false and, if Diags is non-null,
 /// report the error(s).
-bool ParseDiagnosticArgs(DiagnosticOptions &Opts, driver::ArgList &Args,
+bool ParseDiagnosticArgs(DiagnosticOptions &Opts, llvm::opt::ArgList &Args,
                          DiagnosticsEngine *Diags = 0);
-  
+
 class CompilerInvocationBase : public RefCountedBase<CompilerInvocation> {
 protected:
   /// Options controlling the language variant.
diff --git a/include/clang/Frontend/DependencyOutputOptions.h b/include/clang/Frontend/DependencyOutputOptions.h
index 83976c36048f..fefb6f3eda84 100644
--- a/include/clang/Frontend/DependencyOutputOptions.h
+++ b/include/clang/Frontend/DependencyOutputOptions.h
@@ -25,6 +25,7 @@ public:
                                      /// dependency, which can avoid some 'make'
                                      /// problems.
   unsigned AddMissingHeaderDeps : 1; ///< Add missing headers to dependency list
+  unsigned PrintShowIncludes : 1; ///< Print cl.exe style /showIncludes info.
   
   /// The file to write dependency output to.
   std::string OutputFile;
@@ -48,6 +49,7 @@ public:
     ShowHeaderIncludes = 0;
     UsePhonyTargets = 0;
     AddMissingHeaderDeps = 0;
+    PrintShowIncludes = 0;
   }
 };
 
diff --git a/include/clang/Frontend/FrontendAction.h b/include/clang/Frontend/FrontendAction.h
index c67be924720c..a568ba02d2a0 100644
--- a/include/clang/Frontend/FrontendAction.h
+++ b/include/clang/Frontend/FrontendAction.h
@@ -94,6 +94,14 @@ protected:
   /// BeginSourceFileAction (and BeginSourceFile).
   virtual void EndSourceFileAction() {}
 
+  /// \brief Callback at the end of processing a single input, to determine
+  /// if the output files should be erased or not.
+  ///
+  /// By default it returns true if a compiler error occurred.
+  /// This is guaranteed to only be called following a successful call to
+  /// BeginSourceFileAction (and BeginSourceFile).
+  virtual bool shouldEraseOutputFiles();
+
   /// @}
 
 public:
@@ -116,7 +124,7 @@ public:
 
   bool isCurrentFileAST() const {
     assert(!CurrentInput.isEmpty() && "No current file!");
-    return CurrentASTUnit != 0;
+    return CurrentASTUnit.isValid();
   }
 
   const FrontendInputFile &getCurrentInput() const {
diff --git a/include/clang/Frontend/FrontendActions.h b/include/clang/Frontend/FrontendActions.h
index 178619047a38..f3d12769f143 100644
--- a/include/clang/Frontend/FrontendActions.h
+++ b/include/clang/Frontend/FrontendActions.h
@@ -56,12 +56,6 @@ protected:
                                          StringRef InFile);
 };
 
-class ASTDumpXMLAction : public ASTFrontendAction {
-protected:
-  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
-                                         StringRef InFile);
-};
-
 class ASTViewAction : public ASTFrontendAction {
 protected:
   virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
@@ -99,6 +93,7 @@ public:
 
 class GenerateModuleAction : public ASTFrontendAction {
   clang::Module *Module;
+  bool IsSystem;
   
 protected:
   virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
@@ -111,6 +106,9 @@ protected:
   virtual bool hasASTFileSupport() const { return false; }
   
 public:
+  explicit GenerateModuleAction(bool IsSystem = false)
+    : ASTFrontendAction(), IsSystem(IsSystem) { }
+
   virtual bool BeginSourceFileAction(CompilerInstance &CI, StringRef Filename);
   
   /// \brief Compute the AST consumer arguments that will be used to
diff --git a/include/clang/Frontend/FrontendDiagnostic.h b/include/clang/Frontend/FrontendDiagnostic.h
index 0b05b74b9cce..312dbf14115b 100644
--- a/include/clang/Frontend/FrontendDiagnostic.h
+++ b/include/clang/Frontend/FrontendDiagnostic.h
@@ -16,7 +16,7 @@ namespace clang {
   namespace diag {
     enum {
 #define DIAG(ENUM,FLAGS,DEFAULT_MAPPING,DESC,GROUP,\
-             SFINAE,ACCESS,NOWERROR,SHOWINSYSHEADER,CATEGORY) ENUM,
+             SFINAE,NOWERROR,SHOWINSYSHEADER,CATEGORY) ENUM,
 #define FRONTENDSTART
 #include "clang/Basic/DiagnosticFrontendKinds.inc"
 #undef DIAG
diff --git a/include/clang/Frontend/FrontendOptions.h b/include/clang/Frontend/FrontendOptions.h
index 234e3446c809..4b321e86d29c 100644
--- a/include/clang/Frontend/FrontendOptions.h
+++ b/include/clang/Frontend/FrontendOptions.h
@@ -26,7 +26,6 @@ namespace frontend {
   enum ActionKind {
     ASTDeclList,            ///< Parse ASTs and list Decl nodes.
     ASTDump,                ///< Parse ASTs and dump them.
-    ASTDumpXML,             ///< Parse ASTs and dump them in XML.
     ASTPrint,               ///< Parse ASTs and print them.
     ASTView,                ///< Parse ASTs and view them in Graphviz.
     DumpRawTokens,          ///< Dump out raw tokens.
@@ -142,6 +141,8 @@ public:
                                            ///< global module index if available.
   unsigned GenerateGlobalModuleIndex : 1;  ///< Whether we can generate the
                                            ///< global module index if needed.
+  unsigned ASTDumpLookups : 1;             ///< Whether we include lookup table
+                                           ///< dumps in AST dumps.
 
   CodeCompleteOptions CodeCompleteOpts;
 
@@ -157,9 +158,35 @@ public:
     /// \brief Enable migration to modern ObjC literals.
     ObjCMT_Literals = 0x1,
     /// \brief Enable migration to modern ObjC subscripting.
-    ObjCMT_Subscripting = 0x2
+    ObjCMT_Subscripting = 0x2,
+    /// \brief Enable migration to modern ObjC readonly property.
+    ObjCMT_ReadonlyProperty = 0x4,
+    /// \brief Enable migration to modern ObjC readwrite property.
+    ObjCMT_ReadwriteProperty = 0x8,
+    /// \brief Enable migration to modern ObjC property.
+    ObjCMT_Property = (ObjCMT_ReadonlyProperty | ObjCMT_ReadwriteProperty),
+    /// \brief Enable annotation of ObjCMethods of all kinds.
+    ObjCMT_Annotation = 0x10,
+    /// \brief Enable migration of ObjC methods to 'instancetype'.
+    ObjCMT_Instancetype = 0x20,
+    /// \brief Enable migration to NS_ENUM/NS_OPTIONS macros.
+    ObjCMT_NsMacros = 0x40,
+    /// \brief Enable migration to add conforming protocols.
+    ObjCMT_ProtocolConformance = 0x80,
+    /// \brief prefer 'atomic' property over 'nonatomic'.
+    ObjCMT_AtomicProperty = 0x100,
+    /// \brief annotate property with NS_RETURNS_INNER_POINTER
+    ObjCMT_ReturnsInnerPointerProperty = 0x200,
+    /// \brief use NS_NONATOMIC_IOSONLY for property 'atomic' attribute
+    ObjCMT_NsAtomicIOSOnlyProperty = 0x400,
+    ObjCMT_MigrateDecls = (ObjCMT_ReadonlyProperty | ObjCMT_ReadwriteProperty |
+                           ObjCMT_Annotation | ObjCMT_Instancetype |
+                           ObjCMT_NsMacros | ObjCMT_ProtocolConformance |
+                           ObjCMT_NsAtomicIOSOnlyProperty),
+    ObjCMT_MigrateAll = (ObjCMT_Literals | ObjCMT_Subscripting | ObjCMT_MigrateDecls)
   };
   unsigned ObjCMTAction;
+  std::string ObjCMTWhiteListPath;
 
   std::string MTMigrateDir;
   std::string ARCMTMigrateReportOut;
@@ -215,7 +242,7 @@ public:
     FixWhatYouCan(false), FixOnlyWarnings(false), FixAndRecompile(false),
     FixToTemporaries(false), ARCMTMigrateEmitARCErrors(false),
     SkipFunctionBodies(false), UseGlobalModuleIndex(true),
-    GenerateGlobalModuleIndex(true),
+    GenerateGlobalModuleIndex(true), ASTDumpLookups(false),
     ARCMTAction(ARCMT_None), ObjCMTAction(ObjCMT_None),
     ProgramAction(frontend::ParseSyntaxOnly)
   {}
diff --git a/include/clang/Frontend/TextDiagnostic.h b/include/clang/Frontend/TextDiagnostic.h
index 656aa57e6e5a..c8d01b0b15eb 100644
--- a/include/clang/Frontend/TextDiagnostic.h
+++ b/include/clang/Frontend/TextDiagnostic.h
@@ -51,7 +51,8 @@ public:
   /// TextDiagnostic logic requires.
   static void printDiagnosticLevel(raw_ostream &OS,
                                    DiagnosticsEngine::Level Level,
-                                   bool ShowColors);
+                                   bool ShowColors,
+                                   bool CLFallbackMode = false);
 
   /// \brief Pretty-print a diagnostic message to a raw_ostream.
   ///
diff --git a/include/clang/Frontend/Utils.h b/include/clang/Frontend/Utils.h
index 8830dced3cc2..dff56c3a8a4e 100644
--- a/include/clang/Frontend/Utils.h
+++ b/include/clang/Frontend/Utils.h
@@ -17,10 +17,15 @@
 #include "clang/Basic/Diagnostic.h"
 #include "llvm/ADT/IntrusiveRefCntPtr.h"
 #include "llvm/ADT/StringRef.h"
+#include "llvm/Option/OptSpecifier.h"
 
 namespace llvm {
 class raw_fd_ostream;
 class Triple;
+
+namespace opt {
+class ArgList;
+}
 }
 
 namespace clang {
@@ -86,9 +91,11 @@ void AttachDependencyFileGen(Preprocessor &PP,
 /// the default behavior used by -H.
 /// \param OutputPath - If non-empty, a path to write the header include
 /// information to, instead of writing to stderr.
+/// \param ShowDepth - Whether to indent to show the nesting of the includes.
+/// \param MSStyle - Whether to print in cl.exe /showIncludes style.
 void AttachHeaderIncludeGen(Preprocessor &PP, bool ShowAllHeaders = false,
                             StringRef OutputPath = "",
-                            bool ShowDepth = true);
+                            bool ShowDepth = true, bool MSStyle = false);
 
 /// CacheTokens - Cache tokens for use with PCH. Note that this requires
 /// a seekable stream.
@@ -104,6 +111,18 @@ createInvocationFromCommandLine(ArrayRef<const char *> Args,
                             IntrusiveRefCntPtr<DiagnosticsEngine> Diags =
                                 IntrusiveRefCntPtr<DiagnosticsEngine>());
 
-}  // end namespace clang
+/// Return the value of the last argument as an integer, or a default. If Diags
+/// is non-null, emits an error if the argument is given, but non-integral.
+int getLastArgIntValue(const llvm::opt::ArgList &Args,
+                       llvm::opt::OptSpecifier Id, int Default,
+                       DiagnosticsEngine *Diags = 0);
+
+inline int getLastArgIntValue(const llvm::opt::ArgList &Args,
+                              llvm::opt::OptSpecifier Id, int Default,
+                              DiagnosticsEngine &Diags) {
+  return getLastArgIntValue(Args, Id, Default, &Diags);
+}
+
+} // end namespace clang
 
 #endif
diff --git a/include/clang/Index/CommentToXML.h b/include/clang/Index/CommentToXML.h
new file mode 100644
index 000000000000..8444b145343f
--- /dev/null
+++ b/include/clang/Index/CommentToXML.h
@@ -0,0 +1,50 @@
+//===--- CommentToXML.h - Convert comments to XML representation ----------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_INDEX_COMMENTTOXML_H
+#define LLVM_CLANG_INDEX_COMMENTTOXML_H
+
+#include "clang/Basic/LLVM.h"
+
+namespace clang {
+class ASTContext;
+
+namespace comments {
+class FullComment;
+class HTMLTagComment;
+}
+
+namespace index {
+class SimpleFormatContext;
+
+class CommentToXMLConverter {
+  SimpleFormatContext *FormatContext;
+  unsigned FormatInMemoryUniqueId;
+
+public:
+  CommentToXMLConverter() : FormatContext(0), FormatInMemoryUniqueId(0) {}
+
+  void convertCommentToHTML(const comments::FullComment *FC,
+                            SmallVectorImpl<char> &HTML,
+                            const ASTContext &Context);
+
+  void convertHTMLTagNodeToText(const comments::HTMLTagComment *HTC,
+                                SmallVectorImpl<char> &Text,
+                                const ASTContext &Context);
+
+  void convertCommentToXML(const comments::FullComment *FC,
+                           SmallVectorImpl<char> &XML,
+                           const ASTContext &Context);
+};
+
+} // namespace index
+} // namespace clang
+
+#endif // LLVM_CLANG_INDEX_COMMENTTOXML_H
+
diff --git a/include/clang/Index/USRGeneration.h b/include/clang/Index/USRGeneration.h
new file mode 100644
index 000000000000..7b0fd5063ac6
--- /dev/null
+++ b/include/clang/Index/USRGeneration.h
@@ -0,0 +1,54 @@
+//===- USRGeneration.h - Routines for USR generation ----------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_INDEX_USRGENERATION_H
+#define LLVM_CLANG_INDEX_USRGENERATION_H
+
+#include "clang/Basic/LLVM.h"
+#include "llvm/ADT/StringRef.h"
+
+namespace clang {
+  class Decl;
+
+namespace index {
+
+static inline StringRef getUSRSpacePrefix() {
+  return "c:";
+}
+
+/// \brief Generate a USR for a Decl, including the prefix.
+/// \returns true if the results should be ignored, false otherwise.
+bool generateUSRForDecl(const Decl *D, SmallVectorImpl<char> &Buf);
+
+/// \brief Generate a USR fragment for an Objective-C class.
+void generateUSRForObjCClass(StringRef Cls, raw_ostream &OS);
+
+/// \brief Generate a USR fragment for an Objective-C class category.
+void generateUSRForObjCCategory(StringRef Cls, StringRef Cat, raw_ostream &OS);
+
+/// \brief Generate a USR fragment for an Objective-C instance variable.  The
+/// complete USR can be created by concatenating the USR for the
+/// encompassing class with this USR fragment.
+void generateUSRForObjCIvar(StringRef Ivar, raw_ostream &OS);
+
+/// \brief Generate a USR fragment for an Objective-C method.
+void generateUSRForObjCMethod(StringRef Sel, bool IsInstanceMethod,
+                              raw_ostream &OS);
+
+/// \brief Generate a USR fragment for an Objective-C property.
+void generateUSRForObjCProperty(StringRef Prop, raw_ostream &OS);
+
+/// \brief Generate a USR fragment for an Objective-C protocol.
+void generateUSRForObjCProtocol(StringRef Prot, raw_ostream &OS);
+
+} // namespace index
+} // namespace clang
+
+#endif // LLVM_CLANG_IDE_USRGENERATION_H
+
diff --git a/include/clang/Lex/DirectoryLookup.h b/include/clang/Lex/DirectoryLookup.h
index 261dfabc0fd2..dff3e8c3608d 100644
--- a/include/clang/Lex/DirectoryLookup.h
+++ b/include/clang/Lex/DirectoryLookup.h
@@ -16,6 +16,7 @@
 
 #include "clang/Basic/LLVM.h"
 #include "clang/Basic/SourceManager.h"
+#include "clang/Lex/ModuleMap.h"
 
 namespace clang {
 class HeaderMap;
@@ -129,6 +130,11 @@ public:
     return (SrcMgr::CharacteristicKind)DirCharacteristic;
   }
 
+  /// \brief Whether this describes a system header directory.
+  bool isSystemHeaderDirectory() const {
+    return getDirCharacteristic() != SrcMgr::C_User;
+  }
+
   /// \brief Whether this header map is building a framework or not.
   bool isIndexHeaderMap() const { 
     return isHeaderMap() && IsIndexHeaderMap; 
@@ -158,7 +164,7 @@ public:
   const FileEntry *LookupFile(StringRef Filename, HeaderSearch &HS,
                               SmallVectorImpl<char> *SearchPath,
                               SmallVectorImpl<char> *RelativePath,
-                              Module **SuggestedModule,
+                              ModuleMap::KnownHeader *SuggestedModule,
                               bool &InUserSpecifiedSystemFramework) const;
 
 private:
@@ -166,7 +172,7 @@ private:
       StringRef Filename, HeaderSearch &HS,
       SmallVectorImpl<char> *SearchPath,
       SmallVectorImpl<char> *RelativePath,
-      Module **SuggestedModule,
+      ModuleMap::KnownHeader *SuggestedModule,
       bool &InUserSpecifiedSystemHeader) const;
 
 };
diff --git a/include/clang/Lex/HeaderSearch.h b/include/clang/Lex/HeaderSearch.h
index 8a5a798560de..fb1a86206354 100644
--- a/include/clang/Lex/HeaderSearch.h
+++ b/include/clang/Lex/HeaderSearch.h
@@ -53,6 +53,13 @@ struct HeaderFileInfo {
 
   /// \brief Whether this header is part of a module.
   unsigned isModuleHeader : 1;
+
+  /// \brief Whether this header is part of the module that we are building.
+  unsigned isCompilingModuleHeader : 1;
+
+  /// \brief Whether this header is part of the module that we are building.
+  /// This is an instance of ModuleMap::ModuleHeaderRole.
+  unsigned HeaderRole : 2;
   
   /// \brief Whether this structure is considered to already have been
   /// "resolved", meaning that it was loaded from the external source.
@@ -93,8 +100,9 @@ struct HeaderFileInfo {
   
   HeaderFileInfo()
     : isImport(false), isPragmaOnce(false), DirInfo(SrcMgr::C_User), 
-      External(false), isModuleHeader(false), Resolved(false),
-      IndexHeaderMapHeader(false),
+      External(false), isModuleHeader(false), isCompilingModuleHeader(false),
+      HeaderRole(ModuleMap::NormalHeader),
+      Resolved(false), IndexHeaderMapHeader(false),
       NumIncludes(0), ControllingMacroID(0), ControllingMacro(0)  {}
 
   /// \brief Retrieve the controlling macro for this header file, if
@@ -107,6 +115,16 @@ struct HeaderFileInfo {
     return isImport || isPragmaOnce || NumIncludes || ControllingMacro || 
       ControllingMacroID;
   }
+
+  /// \brief Get the HeaderRole properly typed.
+  ModuleMap::ModuleHeaderRole getHeaderRole() const {
+    return static_cast<ModuleMap::ModuleHeaderRole>(HeaderRole);
+  }
+
+  /// \brief Set the HeaderRole properly typed.
+  void setHeaderRole(ModuleMap::ModuleHeaderRole Role) {
+    HeaderRole = Role;
+  }
 };
 
 /// \brief An external source of header file information, which may supply
@@ -222,7 +240,7 @@ class HeaderSearch {
   
 public:
   HeaderSearch(IntrusiveRefCntPtr<HeaderSearchOptions> HSOpts,
-               FileManager &FM, DiagnosticsEngine &Diags,
+               SourceManager &SourceMgr, DiagnosticsEngine &Diags,
                const LangOptions &LangOpts, const TargetInfo *Target);
   ~HeaderSearch();
 
@@ -261,7 +279,7 @@ public:
 
   /// \brief Checks whether the map exists or not.
   bool HasIncludeAliasMap() const {
-    return IncludeAliases;
+    return IncludeAliases.isValid();
   }
 
   /// \brief Map the source include name to the dest include name.
@@ -354,7 +372,7 @@ public:
                               const FileEntry *CurFileEnt,
                               SmallVectorImpl<char> *SearchPath,
                               SmallVectorImpl<char> *RelativePath,
-                              Module **SuggestedModule,
+                              ModuleMap::KnownHeader *SuggestedModule,
                               bool SkipCache = false);
 
   /// \brief Look up a subframework for the specified \#include file.
@@ -368,7 +386,7 @@ public:
       const FileEntry *RelativeFileEnt,
       SmallVectorImpl<char> *SearchPath,
       SmallVectorImpl<char> *RelativePath,
-      Module **SuggestedModule);
+      ModuleMap::KnownHeader *SuggestedModule);
 
   /// \brief Look up the specified framework name in our framework cache.
   /// \returns The DirectoryEntry it is in if we know, null otherwise.
@@ -405,7 +423,9 @@ public:
   }
 
   /// \brief Mark the specified file as part of a module.
-  void MarkFileModuleHeader(const FileEntry *File);
+  void MarkFileModuleHeader(const FileEntry *File,
+                            ModuleMap::ModuleHeaderRole Role,
+                            bool IsCompiledModuleHeader);
 
   /// \brief Increment the count for the number of times the specified
   /// FileEntry has been entered.
@@ -422,6 +442,11 @@ public:
     getFileInfo(File).ControllingMacro = ControllingMacro;
   }
 
+  /// \brief Return true if this is the first time encountering this header.
+  bool FirstTimeLexingFile(const FileEntry *File) {
+    return getFileInfo(File).NumIncludes == 1;
+  }
+
   /// \brief Determine whether this file is intended to be safe from
   /// multiple inclusions, e.g., it has \#pragma once or a controlling
   /// macro.
@@ -471,25 +496,33 @@ public:
   ///
   /// \param Root The "root" directory, at which we should stop looking for
   /// module maps.
-  bool hasModuleMap(StringRef Filename, const DirectoryEntry *Root);
+  ///
+  /// \param IsSystem Whether the directories we're looking at are system
+  /// header directories.
+  bool hasModuleMap(StringRef Filename, const DirectoryEntry *Root,
+                    bool IsSystem);
   
   /// \brief Retrieve the module that corresponds to the given file, if any.
   ///
   /// \param File The header that we wish to map to a module.
-  Module *findModuleForHeader(const FileEntry *File) const;
+  ModuleMap::KnownHeader findModuleForHeader(const FileEntry *File) const;
   
   /// \brief Read the contents of the given module map file.
   ///
   /// \param File The module map file.
+  /// \param IsSystem Whether this file is in a system header directory.
   ///
   /// \returns true if an error occurred, false otherwise.
-  bool loadModuleMapFile(const FileEntry *File);
+  bool loadModuleMapFile(const FileEntry *File, bool IsSystem);
 
   /// \brief Collect the set of all known, top-level modules.
   ///
   /// \param Modules Will be filled with the set of known, top-level modules.
   void collectAllModules(SmallVectorImpl<Module *> &Modules);
-                         
+
+  /// \brief Load all known, top-level system modules.
+  void loadTopLevelSystemModules();
+
 private:
   /// \brief Retrieve a module with the given name, which may be part of the
   /// given framework.
@@ -516,9 +549,6 @@ public:
   
   unsigned header_file_size() const { return FileInfo.size(); }
 
-  // Used by ASTReader.
-  void setHeaderFileInfoForUID(HeaderFileInfo HFI, unsigned UID);
-
   /// \brief Return the HeaderFileInfo structure for the specified FileEntry.
   const HeaderFileInfo &getFileInfo(const FileEntry *FE) const {
     return const_cast<HeaderSearch*>(this)->getFileInfo(FE);
@@ -577,18 +607,21 @@ private:
   ///
   /// \param DirName The name of the directory where we will look for a module
   /// map file.
+  /// \param IsSystem Whether this is a system header directory.
   ///
   /// \returns The result of attempting to load the module map file from the
   /// named directory.
-  LoadModuleMapResult loadModuleMapFile(StringRef DirName);
+  LoadModuleMapResult loadModuleMapFile(StringRef DirName, bool IsSystem);
 
   /// \brief Try to load the module map file in the given directory.
   ///
   /// \param Dir The directory where we will look for a module map file.
+  /// \param IsSystem Whether this is a system header directory.
   ///
   /// \returns The result of attempting to load the module map file from the
   /// named directory.
-  LoadModuleMapResult loadModuleMapFile(const DirectoryEntry *Dir);
+  LoadModuleMapResult loadModuleMapFile(const DirectoryEntry *Dir,
+                                        bool IsSystem);
 
   /// \brief Return the HeaderFileInfo structure for the specified FileEntry.
   HeaderFileInfo &getFileInfo(const FileEntry *FE);
diff --git a/include/clang/Lex/HeaderSearchOptions.h b/include/clang/Lex/HeaderSearchOptions.h
index afce5ba18b3b..0b21c0dd3492 100644
--- a/include/clang/Lex/HeaderSearchOptions.h
+++ b/include/clang/Lex/HeaderSearchOptions.h
@@ -95,6 +95,9 @@ public:
   /// Note: Only used for testing!
   unsigned DisableModuleHash : 1;
 
+  /// \brief Interpret module maps.  This option is implied by full modules.
+  unsigned ModuleMaps : 1;
+
   /// \brief The interval (in seconds) between pruning operations.
   ///
   /// This operation is expensive, because it requires Clang to walk through
@@ -117,6 +120,9 @@ public:
   /// of computing the module hash.
   llvm::SetVector<std::string> ModulesIgnoreMacros;
 
+  /// \brief The set of user-provided module-map-files.
+  llvm::SetVector<std::string> ModuleMapFiles;
+
   /// Include the compiler builtin includes.
   unsigned UseBuiltinIncludes : 1;
 
@@ -134,7 +140,7 @@ public:
 
 public:
   HeaderSearchOptions(StringRef _Sysroot = "/")
-    : Sysroot(_Sysroot), DisableModuleHash(0),
+    : Sysroot(_Sysroot), DisableModuleHash(0), ModuleMaps(0),
       ModuleCachePruneInterval(7*24*60*60),
       ModuleCachePruneAfter(31*24*60*60),
       UseBuiltinIncludes(true),
diff --git a/include/clang/Lex/LexDiagnostic.h b/include/clang/Lex/LexDiagnostic.h
index 41b93963a7ee..85424aa8a10f 100644
--- a/include/clang/Lex/LexDiagnostic.h
+++ b/include/clang/Lex/LexDiagnostic.h
@@ -16,7 +16,7 @@ namespace clang {
   namespace diag {
     enum {
 #define DIAG(ENUM,FLAGS,DEFAULT_MAPPING,DESC,GROUP,\
-             SFINAE,ACCESS,NOWERROR,SHOWINSYSHEADER,CATEGORY) ENUM,
+             SFINAE,NOWERROR,SHOWINSYSHEADER,CATEGORY) ENUM,
 #define LEXSTART
 #include "clang/Basic/DiagnosticLexKinds.inc"
 #undef DIAG
diff --git a/include/clang/Lex/Lexer.h b/include/clang/Lex/Lexer.h
index cb4f57fb9cf4..f456fa9cd51c 100644
--- a/include/clang/Lex/Lexer.h
+++ b/include/clang/Lex/Lexer.h
@@ -80,6 +80,12 @@ class Lexer : public PreprocessorLexer {
   // line" flag set on it.
   bool IsAtStartOfLine;
 
+  bool IsAtPhysicalStartOfLine;
+
+  bool HasLeadingSpace;
+
+  bool HasLeadingEmptyMacro;
+
   // CurrentConflictMarkerState - The kind of conflict marker we are handling.
   ConflictMarkerKind CurrentConflictMarkerState;
 
@@ -127,31 +133,21 @@ public:
   /// from.  Currently this is only used by _Pragma handling.
   SourceLocation getFileLoc() const { return FileLoc; }
 
+private:
   /// Lex - Return the next token in the file.  If this is the end of file, it
   /// return the tok::eof token.  This implicitly involves the preprocessor.
-  void Lex(Token &Result) {
-    // Start a new token.
-    Result.startToken();
-
-    // NOTE, any changes here should also change code after calls to
-    // Preprocessor::HandleDirective
-    if (IsAtStartOfLine) {
-      Result.setFlag(Token::StartOfLine);
-      IsAtStartOfLine = false;
-    }
-
-    // Get a token.  Note that this may delete the current lexer if the end of
-    // file is reached.
-    LexTokenInternal(Result);
-  }
+  bool Lex(Token &Result);
 
+public:
   /// isPragmaLexer - Returns true if this Lexer is being used to lex a pragma.
   bool isPragmaLexer() const { return Is_PragmaLexer; }
 
+private:
   /// IndirectLex - An indirect call to 'Lex' that can be invoked via
   ///  the PreprocessorLexer interface.
   void IndirectLex(Token &Result) { Lex(Result); }
 
+public:
   /// LexFromRawLexer - Lex a token from a designated raw lexer (one with no
   /// associated preprocessor object.  Return true if the 'next character to
   /// read' pointer points at the end of the lexer buffer, false otherwise.
@@ -202,7 +198,10 @@ public:
   /// lexer has nothing to reset to.
   void resetExtendedTokenMode();
 
-  const char *getBufferStart() const { return BufferStart; }
+  /// Gets source code buffer.
+  StringRef getBuffer() const {
+    return StringRef(BufferStart, BufferEnd - BufferStart);
+  }
 
   /// ReadToEndOfLine - Read the rest of the current preprocessor line as an
   /// uninterpreted string.  This switches the lexer out of directive mode.
@@ -285,7 +284,8 @@ public:
   /// \returns true if there was a failure, false on success.
   static bool getRawToken(SourceLocation Loc, Token &Result,
                           const SourceManager &SM,
-                          const LangOptions &LangOpts);
+                          const LangOptions &LangOpts,
+                          bool IgnoreWhiteSpace = false);
 
   /// \brief Given a location any where in a source buffer, find the location
   /// that corresponds to the beginning of the token in which the original
@@ -443,12 +443,14 @@ private:
   /// LexTokenInternal - Internal interface to lex a preprocessing token. Called
   /// by Lex.
   ///
-  void LexTokenInternal(Token &Result);
+  bool LexTokenInternal(Token &Result, bool TokAtPhysicalStartOfLine);
+
+  bool CheckUnicodeWhitespace(Token &Result, uint32_t C, const char *CurPtr);
 
   /// Given that a token begins with the Unicode character \p C, figure out
   /// what kind of token it is and dispatch to the appropriate lexing helper
   /// function.
-  void LexUnicode(Token &Result, uint32_t C, const char *CurPtr);
+  bool LexUnicode(Token &Result, uint32_t C, const char *CurPtr);
 
   /// FormTokenWithChars - When we lex a token, we have identified a span
   /// starting at BufferPtr, going to TokEnd that forms the token.  This method
@@ -566,23 +568,28 @@ private:
 
   void SkipBytes(unsigned Bytes, bool StartOfLine);
 
-  const char *LexUDSuffix(Token &Result, const char *CurPtr);
-  
+  void PropagateLineStartLeadingSpaceInfo(Token &Result);
+
+  const char *LexUDSuffix(Token &Result, const char *CurPtr,
+                          bool IsStringLiteral);
+
   // Helper functions to lex the remainder of a token of the specific type.
-  void LexIdentifier         (Token &Result, const char *CurPtr);
-  void LexNumericConstant    (Token &Result, const char *CurPtr);
-  void LexStringLiteral      (Token &Result, const char *CurPtr,
+  bool LexIdentifier         (Token &Result, const char *CurPtr);
+  bool LexNumericConstant    (Token &Result, const char *CurPtr);
+  bool LexStringLiteral      (Token &Result, const char *CurPtr,
                               tok::TokenKind Kind);
-  void LexRawStringLiteral   (Token &Result, const char *CurPtr,
+  bool LexRawStringLiteral   (Token &Result, const char *CurPtr,
                               tok::TokenKind Kind);
-  void LexAngledStringLiteral(Token &Result, const char *CurPtr);
-  void LexCharConstant       (Token &Result, const char *CurPtr,
+  bool LexAngledStringLiteral(Token &Result, const char *CurPtr);
+  bool LexCharConstant       (Token &Result, const char *CurPtr,
                               tok::TokenKind Kind);
   bool LexEndOfFile          (Token &Result, const char *CurPtr);
-
-  bool SkipWhitespace        (Token &Result, const char *CurPtr);
-  bool SkipLineComment       (Token &Result, const char *CurPtr);
-  bool SkipBlockComment      (Token &Result, const char *CurPtr);
+  bool SkipWhitespace        (Token &Result, const char *CurPtr,
+                              bool &TokAtPhysicalStartOfLine);
+  bool SkipLineComment       (Token &Result, const char *CurPtr,
+                              bool &TokAtPhysicalStartOfLine);
+  bool SkipBlockComment      (Token &Result, const char *CurPtr,
+                              bool &TokAtPhysicalStartOfLine);
   bool SaveLineComment       (Token &Result, const char *CurPtr);
   
   bool IsStartOfConflictMarker(const char *CurPtr);
diff --git a/include/clang/Lex/LiteralSupport.h b/include/clang/Lex/LiteralSupport.h
index b1430cc80519..64d5aa2d5928 100644
--- a/include/clang/Lex/LiteralSupport.h
+++ b/include/clang/Lex/LiteralSupport.h
@@ -79,6 +79,8 @@ public:
     return SuffixBegin - ThisTokBegin;
   }
 
+  static bool isValidUDSuffix(const LangOptions &LangOpts, StringRef Suffix);
+
   unsigned getRadix() const { return radix; }
 
   /// GetIntegerValue - Convert this numeric literal value to an APInt that
@@ -98,10 +100,18 @@ private:
 
   void ParseNumberStartingWithZero(SourceLocation TokLoc);
 
+  static bool isDigitSeparator(char C) { return C == '\''; }
+
+  enum CheckSeparatorKind { CSK_BeforeDigits, CSK_AfterDigits };
+
+  /// \brief Ensure that we don't have a digit separator here.
+  void checkSeparator(SourceLocation TokLoc, const char *Pos,
+                      CheckSeparatorKind IsAfterDigits);
+
   /// SkipHexDigits - Read and skip over any hex digits, up to End.
   /// Return a pointer to the first non-hex digit or End.
   const char *SkipHexDigits(const char *ptr) {
-    while (ptr != ThisTokEnd && isHexDigit(*ptr))
+    while (ptr != ThisTokEnd && (isHexDigit(*ptr) || isDigitSeparator(*ptr)))
       ptr++;
     return ptr;
   }
@@ -109,7 +119,8 @@ private:
   /// SkipOctalDigits - Read and skip over any octal digits, up to End.
   /// Return a pointer to the first non-hex digit or End.
   const char *SkipOctalDigits(const char *ptr) {
-    while (ptr != ThisTokEnd && ((*ptr >= '0') && (*ptr <= '7')))
+    while (ptr != ThisTokEnd &&
+           ((*ptr >= '0' && *ptr <= '7') || isDigitSeparator(*ptr)))
       ptr++;
     return ptr;
   }
@@ -117,7 +128,7 @@ private:
   /// SkipDigits - Read and skip over any digits, up to End.
   /// Return a pointer to the first non-hex digit or End.
   const char *SkipDigits(const char *ptr) {
-    while (ptr != ThisTokEnd && isDigit(*ptr))
+    while (ptr != ThisTokEnd && (isDigit(*ptr) || isDigitSeparator(*ptr)))
       ptr++;
     return ptr;
   }
@@ -125,7 +136,8 @@ private:
   /// SkipBinaryDigits - Read and skip over any binary digits, up to End.
   /// Return a pointer to the first non-binary digit or End.
   const char *SkipBinaryDigits(const char *ptr) {
-    while (ptr != ThisTokEnd && (*ptr == '0' || *ptr == '1'))
+    while (ptr != ThisTokEnd &&
+           (*ptr == '0' || *ptr == '1' || isDigitSeparator(*ptr)))
       ptr++;
     return ptr;
   }
diff --git a/include/clang/Lex/MacroInfo.h b/include/clang/Lex/MacroInfo.h
index 64323b7c765f..8cb370e6f833 100644
--- a/include/clang/Lex/MacroInfo.h
+++ b/include/clang/Lex/MacroInfo.h
@@ -251,7 +251,7 @@ public:
     return ReplacementTokens[Tok];
   }
 
-  typedef SmallVector<Token, 8>::const_iterator tokens_iterator;
+  typedef SmallVectorImpl<Token>::const_iterator tokens_iterator;
   tokens_iterator tokens_begin() const { return ReplacementTokens.begin(); }
   tokens_iterator tokens_end() const { return ReplacementTokens.end(); }
   bool tokens_empty() const { return ReplacementTokens.empty(); }
@@ -421,7 +421,7 @@ public:
     bool isValid() const { return DefDirective != 0; }
     bool isInvalid() const { return !isValid(); }
 
-    operator bool() const { return isValid(); }
+    LLVM_EXPLICIT operator bool() const { return isValid(); }
 
     inline DefInfo getPreviousDefinition(bool AllowHidden = false);
     const DefInfo getPreviousDefinition(bool AllowHidden = false) const {
diff --git a/include/clang/Lex/ModuleLoader.h b/include/clang/Lex/ModuleLoader.h
index 3acf9151bc52..254ab36fe960 100644
--- a/include/clang/Lex/ModuleLoader.h
+++ b/include/clang/Lex/ModuleLoader.h
@@ -54,6 +54,8 @@ public:
 /// then loading that module.
 class ModuleLoader {
 public:
+  ModuleLoader() : HadFatalFailure(false) {}
+
   virtual ~ModuleLoader();
   
   /// \brief Attempt to load the given module.
@@ -85,6 +87,8 @@ public:
                                  Module::NameVisibilityKind Visibility,
                                  SourceLocation ImportLoc,
                                  bool Complain) = 0;
+
+  bool HadFatalFailure;
 };
   
 }
diff --git a/include/clang/Lex/ModuleMap.h b/include/clang/Lex/ModuleMap.h
index dc75f1803cb7..3a17157f94d5 100644
--- a/include/clang/Lex/ModuleMap.h
+++ b/include/clang/Lex/ModuleMap.h
@@ -37,7 +37,7 @@ class HeaderSearch;
 class ModuleMapParser;
   
 class ModuleMap {
-  SourceManager *SourceMgr;
+  SourceManager &SourceMgr;
   IntrusiveRefCntPtr<DiagnosticsEngine> Diags;
   const LangOptions &LangOpts;
   const TargetInfo *Target;
@@ -52,37 +52,64 @@ class ModuleMap {
   /// These are always simple C language options.
   LangOptions MMapLangOpts;
 
+  // The module that we are building; related to \c LangOptions::CurrentModule.
+  Module *CompilingModule;
+
+public:
+  // The module that the .cc source file is associated with.
+  Module *SourceModule;
+  std::string SourceModuleName;
+
+private:
   /// \brief The top-level modules that are known.
   llvm::StringMap<Module *> Modules;
 
+public:
+  /// \brief Describes the role of a module header.
+  enum ModuleHeaderRole {
+    /// \brief This header is normally included in the module.
+    NormalHeader,
+    /// \brief This header is included but private.
+    PrivateHeader,
+    /// \brief This header is explicitly excluded from the module.
+    ExcludedHeader
+    // Caution: Adding an enumerator needs other changes.
+    // Adjust the number of bits for KnownHeader::Storage.
+    // Adjust the bitfield HeaderFileInfo::HeaderRole size.
+    // Adjust the HeaderFileInfoTrait::ReadData streaming.
+    // Adjust the HeaderFileInfoTrait::EmitData streaming.
+  };
+
   /// \brief A header that is known to reside within a given module,
   /// whether it was included or excluded.
   class KnownHeader {
-    llvm::PointerIntPair<Module *, 1, bool> Storage;
+    llvm::PointerIntPair<Module *, 2, ModuleHeaderRole> Storage;
 
   public:
-    KnownHeader() : Storage(0, false) { }
-    KnownHeader(Module *M, bool Excluded) : Storage(M, Excluded) { }
+    KnownHeader() : Storage(0, NormalHeader) { }
+    KnownHeader(Module *M, ModuleHeaderRole Role) : Storage(M, Role) { }
 
     /// \brief Retrieve the module the header is stored in.
     Module *getModule() const { return Storage.getPointer(); }
 
-    /// \brief Whether this header is explicitly excluded from the module.
-    bool isExcluded() const { return Storage.getInt(); }
+    /// \brief The role of this header within the module.
+    ModuleHeaderRole getRole() const { return Storage.getInt(); }
 
     /// \brief Whether this header is available in the module.
     bool isAvailable() const { 
-      return !isExcluded() && getModule()->isAvailable(); 
+      return getRole() != ExcludedHeader && getModule()->isAvailable(); 
     }
 
     // \brief Whether this known header is valid (i.e., it has an
     // associated module).
-    operator bool() const { return Storage.getPointer() != 0; }
+    LLVM_EXPLICIT operator bool() const { return Storage.getPointer() != 0; }
   };
 
-  typedef llvm::DenseMap<const FileEntry *, KnownHeader> HeadersMap;
+private:
+  typedef llvm::DenseMap<const FileEntry *, SmallVector<KnownHeader, 1> >
+  HeadersMap;
 
-  /// \brief Mapping from each header to the module that owns the contents of the
+  /// \brief Mapping from each header to the module that owns the contents of
   /// that header.
   HeadersMap Headers;
   
@@ -151,9 +178,9 @@ class ModuleMap {
 public:
   /// \brief Construct a new module map.
   ///
-  /// \param FileMgr The file manager used to find module files and headers.
-  /// This file manager should be shared with the header-search mechanism, since
-  /// they will refer to the same headers.
+  /// \param SourceMgr The source manager used to find module files and headers.
+  /// This source manager should be shared with the header-search mechanism,
+  /// since they will refer to the same headers.
   ///
   /// \param DC A diagnostic consumer that will be cloned for use in generating
   /// diagnostics.
@@ -161,7 +188,7 @@ public:
   /// \param LangOpts Language options for this translation unit.
   ///
   /// \param Target The target for this translation unit.
-  ModuleMap(FileManager &FileMgr, DiagnosticConsumer &DC,
+  ModuleMap(SourceManager &SourceMgr, DiagnosticConsumer &DC,
             const LangOptions &LangOpts, const TargetInfo *Target,
             HeaderSearch &HeaderInfo);
 
@@ -182,9 +209,15 @@ public:
   ///
   /// \param File The header file that is likely to be included.
   ///
-  /// \returns The module that owns the given header file, or null to indicate
+  /// \param RequestingModule Specifies the module the header is intended to be
+  /// used from.  Used to disambiguate if a header is present in multiple
+  /// modules.
+  ///
+  /// \returns The module KnownHeader, which provides the module that owns the
+  /// given header file.  The KnownHeader is default constructed to indicate
   /// that no module owns this header file.
-  Module *findModuleForHeader(const FileEntry *File);
+  KnownHeader findModuleForHeader(const FileEntry *File,
+                                  Module *RequestingModule = NULL);
 
   /// \brief Determine whether the given header is part of a module
   /// marked 'unavailable'.
@@ -278,6 +311,16 @@ public:
   /// false otherwise.
   bool resolveExports(Module *Mod, bool Complain);
 
+  /// \brief Resolve all of the unresolved uses in the given module.
+  ///
+  /// \param Mod The module whose uses should be resolved.
+  ///
+  /// \param Complain Whether to emit diagnostics for failures.
+  ///
+  /// \returns true if any errors were encountered while resolving uses,
+  /// false otherwise.
+  bool resolveUses(Module *Mod, bool Complain);
+
   /// \brief Resolve all of the unresolved conflicts in the given module.
   ///
   /// \param Mod The module whose conflicts should be resolved.
@@ -307,17 +350,20 @@ public:
   void setUmbrellaDir(Module *Mod, const DirectoryEntry *UmbrellaDir);
 
   /// \brief Adds this header to the given module.
-  /// \param Excluded Whether this header is explicitly excluded from the
-  /// module; otherwise, it's included in the module.
-  void addHeader(Module *Mod, const FileEntry *Header, bool Excluded);
+  /// \param Role The role of the header wrt the module.
+  void addHeader(Module *Mod, const FileEntry *Header,
+                 ModuleHeaderRole Role);
 
   /// \brief Parse the given module map file, and record any modules we 
   /// encounter.
   ///
   /// \param File The file to be parsed.
   ///
+  /// \param IsSystem Whether this module map file is in a system header
+  /// directory, and therefore should be considered a system module.
+  ///
   /// \returns true if an error occurred, false otherwise.
-  bool parseModuleMapFile(const FileEntry *File);
+  bool parseModuleMapFile(const FileEntry *File, bool IsSystem);
     
   /// \brief Dump the contents of the module map, for debugging purposes.
   void dump();
diff --git a/include/clang/Lex/MultipleIncludeOpt.h b/include/clang/Lex/MultipleIncludeOpt.h
index a2a5a77c73d7..b532bf82f049 100644
--- a/include/clang/Lex/MultipleIncludeOpt.h
+++ b/include/clang/Lex/MultipleIncludeOpt.h
@@ -15,6 +15,8 @@
 #ifndef LLVM_CLANG_MULTIPLEINCLUDEOPT_H
 #define LLVM_CLANG_MULTIPLEINCLUDEOPT_H
 
+#include "clang/Basic/SourceLocation.h"
+
 namespace clang {
 class IdentifierInfo;
 
@@ -32,6 +34,11 @@ class MultipleIncludeOpt {
   /// \#endif can be easily detected.
   bool ReadAnyTokens;
 
+  /// ImmediatelyAfterTopLevelIfndef - This is true when the only tokens
+  /// processed in the file so far is an #ifndef and an identifier.  Used in
+  /// the detection of header guards in a file.
+  bool ImmediatelyAfterTopLevelIfndef;
+
   /// ReadAnyTokens - This is set to false when a file is first opened and true
   /// any time a token is returned to the client or a (non-multiple-include)
   /// directive is parsed.  When the final #endif is parsed this is reset back
@@ -42,11 +49,36 @@ class MultipleIncludeOpt {
   /// TheMacro - The controlling macro for a file, if valid.
   ///
   const IdentifierInfo *TheMacro;
+
+  /// DefinedMacro - The macro defined right after TheMacro, if any.
+  const IdentifierInfo *DefinedMacro;
+
+  SourceLocation MacroLoc;
+  SourceLocation DefinedLoc;
 public:
   MultipleIncludeOpt() {
     ReadAnyTokens = false;
+    ImmediatelyAfterTopLevelIfndef = false;
     DidMacroExpansion = false;
     TheMacro = 0;
+    DefinedMacro = 0;
+  }
+
+  SourceLocation GetMacroLocation() const {
+    return MacroLoc;
+  }
+
+  SourceLocation GetDefinedLocation() const {
+    return DefinedLoc;
+  }
+
+  void resetImmediatelyAfterTopLevelIfndef() {
+    ImmediatelyAfterTopLevelIfndef = false;
+  }
+
+  void SetDefinedMacro(IdentifierInfo *M, SourceLocation Loc) {
+    DefinedMacro = M;
+    DefinedLoc = Loc;
   }
 
   /// Invalidate - Permanently mark this file as not being suitable for the
@@ -55,6 +87,8 @@ public:
     // If we have read tokens but have no controlling macro, the state-machine
     // below can never "accept".
     ReadAnyTokens = true;
+    ImmediatelyAfterTopLevelIfndef = false;
+    DefinedMacro = 0;
     TheMacro = 0;
   }
 
@@ -63,8 +97,17 @@ public:
   /// the "ifndef x" would count as reading tokens.
   bool getHasReadAnyTokensVal() const { return ReadAnyTokens; }
 
+  /// getImmediatelyAfterTopLevelIfndef - returns true if the last directive
+  /// was an #ifndef at the beginning of the file.
+  bool getImmediatelyAfterTopLevelIfndef() const {
+    return ImmediatelyAfterTopLevelIfndef;
+  }
+
   // If a token is read, remember that we have seen a side-effect in this file.
-  void ReadToken() { ReadAnyTokens = true; }
+  void ReadToken() {
+    ReadAnyTokens = true;
+    ImmediatelyAfterTopLevelIfndef = false;
+  }
 
   /// ExpandedMacro - When a macro is expanded with this lexer as the current
   /// buffer, this method is called to disable the MIOpt if needed.
@@ -77,7 +120,7 @@ public:
   /// ensures that this is only called if there are no tokens read before the
   /// \#ifndef.  The caller is required to do this, because reading the \#if
   /// line obviously reads in in tokens.
-  void EnterTopLevelIFNDEF(const IdentifierInfo *M) {
+  void EnterTopLevelIfndef(const IdentifierInfo *M, SourceLocation Loc) {
     // If the macro is already set, this is after the top-level #endif.
     if (TheMacro)
       return Invalidate();
@@ -91,7 +134,9 @@ public:
 
     // Remember that we're in the #if and that we have the macro.
     ReadAnyTokens = true;
+    ImmediatelyAfterTopLevelIfndef = true;
     TheMacro = M;
+    MacroLoc = Loc;
   }
 
   /// \brief Invoked when a top level conditional (except \#ifndef) is found.
@@ -111,6 +156,7 @@ public:
     // At this point, we haven't "read any tokens" but we do have a controlling
     // macro.
     ReadAnyTokens = false;
+    ImmediatelyAfterTopLevelIfndef = false;
   }
 
   /// \brief Once the entire file has been lexed, if there is a controlling
@@ -122,6 +168,12 @@ public:
       return TheMacro;
     return 0;
   }
+
+  /// \brief If the ControllingMacro is followed by a macro definition, return
+  /// the macro that was defined.
+  const IdentifierInfo *GetDefinedMacro() const {
+    return DefinedMacro;
+  }
 };
 
 }  // end namespace clang
diff --git a/include/clang/Lex/PPCallbacks.h b/include/clang/Lex/PPCallbacks.h
index db2ecd247f40..0e112182794d 100644
--- a/include/clang/Lex/PPCallbacks.h
+++ b/include/clang/Lex/PPCallbacks.h
@@ -19,6 +19,7 @@
 #include "clang/Basic/SourceLocation.h"
 #include "clang/Lex/DirectoryLookup.h"
 #include "clang/Lex/ModuleLoader.h"
+#include "clang/Lex/Pragma.h"
 #include "llvm/ADT/StringRef.h"
 #include <string>
 
@@ -155,11 +156,23 @@ public:
   virtual void Ident(SourceLocation Loc, const std::string &str) {
   }
 
+  /// \brief Callback invoked when start reading any pragma directive.
+  virtual void PragmaDirective(SourceLocation Loc,
+                               PragmaIntroducerKind Introducer) {
+  }
+
   /// \brief Callback invoked when a \#pragma comment directive is read.
   virtual void PragmaComment(SourceLocation Loc, const IdentifierInfo *Kind,
                              const std::string &Str) {
   }
 
+  /// \brief Callback invoked when a \#pragma detect_mismatch directive is
+  /// read.
+  virtual void PragmaDetectMismatch(SourceLocation Loc,
+                                    const std::string &Name,
+                                    const std::string &Value) {
+  }
+
   /// \brief Callback invoked when a \#pragma clang __debug directive is read.
   /// \param Loc The location of the debug directive.
   /// \param DebugType The identifier following __debug.
@@ -204,6 +217,26 @@ public:
                                 diag::Mapping mapping, StringRef Str) {
   }
 
+  /// \brief Called when an OpenCL extension is either disabled or
+  /// enabled with a pragma.
+  virtual void PragmaOpenCLExtension(SourceLocation NameLoc, 
+                                     const IdentifierInfo *Name,
+                                     SourceLocation StateLoc, unsigned State) {
+  }
+
+  /// \brief Callback invoked when a \#pragma warning directive is read.
+  virtual void PragmaWarning(SourceLocation Loc, StringRef WarningSpec,
+                             ArrayRef<int> Ids) {
+  }
+
+  /// \brief Callback invoked when a \#pragma warning(push) directive is read.
+  virtual void PragmaWarningPush(SourceLocation Loc, int Level) {
+  }
+
+  /// \brief Callback invoked when a \#pragma warning(pop) directive is read.
+  virtual void PragmaWarningPop(SourceLocation Loc) {
+  }
+
   /// \brief Called by Preprocessor::HandleMacroExpandedIdentifier when a
   /// macro invocation is found.
   virtual void MacroExpands(const Token &MacroNameTok, const MacroDirective *MD,
@@ -224,7 +257,8 @@ public:
   
   /// \brief Hook called whenever the 'defined' operator is seen.
   /// \param MD The MacroDirective if the name was a macro, null otherwise.
-  virtual void Defined(const Token &MacroNameTok, const MacroDirective *MD) {
+  virtual void Defined(const Token &MacroNameTok, const MacroDirective *MD,
+                       SourceRange Range) {
   }
   
   /// \brief Hook called when a source range is skipped.
@@ -236,18 +270,21 @@ public:
   /// \brief Hook called whenever an \#if is seen.
   /// \param Loc the source location of the directive.
   /// \param ConditionRange The SourceRange of the expression being tested.
+  /// \param ConditionValue The evaluated value of the condition.
   ///
   // FIXME: better to pass in a list (or tree!) of Tokens.
-  virtual void If(SourceLocation Loc, SourceRange ConditionRange) {
+  virtual void If(SourceLocation Loc, SourceRange ConditionRange,
+                  bool ConditionValue) {
   }
 
   /// \brief Hook called whenever an \#elif is seen.
   /// \param Loc the source location of the directive.
   /// \param ConditionRange The SourceRange of the expression being tested.
+  /// \param ConditionValue The evaluated value of the condition.
   /// \param IfLoc the source location of the \#if/\#ifdef/\#ifndef directive.
   // FIXME: better to pass in a list (or tree!) of Tokens.
   virtual void Elif(SourceLocation Loc, SourceRange ConditionRange,
-                    SourceLocation IfLoc) {
+                    bool ConditionValue, SourceLocation IfLoc) {
   }
 
   /// \brief Hook called whenever an \#ifdef is seen.
@@ -352,6 +389,13 @@ public:
     Second->PragmaComment(Loc, Kind, Str);
   }
 
+  virtual void PragmaDetectMismatch(SourceLocation Loc,
+                                    const std::string &Name,
+                                    const std::string &Value) {
+    First->PragmaDetectMismatch(Loc, Name, Value);
+    Second->PragmaDetectMismatch(Loc, Name, Value);
+  }
+
   virtual void PragmaMessage(SourceLocation Loc, StringRef Namespace,
                              PragmaMessageKind Kind, StringRef Str) {
     First->PragmaMessage(Loc, Namespace, Kind, Str);
@@ -376,6 +420,29 @@ public:
     Second->PragmaDiagnostic(Loc, Namespace, mapping, Str);
   }
 
+  virtual void PragmaOpenCLExtension(SourceLocation NameLoc, 
+                                     const IdentifierInfo *Name,
+                                     SourceLocation StateLoc, unsigned State) {
+    First->PragmaOpenCLExtension(NameLoc, Name, StateLoc, State);
+    Second->PragmaOpenCLExtension(NameLoc, Name, StateLoc, State);
+  }
+
+  virtual void PragmaWarning(SourceLocation Loc, StringRef WarningSpec,
+                             ArrayRef<int> Ids) {
+    First->PragmaWarning(Loc, WarningSpec, Ids);
+    Second->PragmaWarning(Loc, WarningSpec, Ids);
+  }
+
+  virtual void PragmaWarningPush(SourceLocation Loc, int Level) {
+    First->PragmaWarningPush(Loc, Level);
+    Second->PragmaWarningPush(Loc, Level);
+  }
+
+  virtual void PragmaWarningPop(SourceLocation Loc) {
+    First->PragmaWarningPop(Loc);
+    Second->PragmaWarningPop(Loc);
+  }
+
   virtual void MacroExpands(const Token &MacroNameTok, const MacroDirective *MD,
                             SourceRange Range, const MacroArgs *Args) {
     First->MacroExpands(MacroNameTok, MD, Range, Args);
@@ -393,9 +460,10 @@ public:
     Second->MacroUndefined(MacroNameTok, MD);
   }
 
-  virtual void Defined(const Token &MacroNameTok, const MacroDirective *MD) {
-    First->Defined(MacroNameTok, MD);
-    Second->Defined(MacroNameTok, MD);
+  virtual void Defined(const Token &MacroNameTok, const MacroDirective *MD,
+                       SourceRange Range) {
+    First->Defined(MacroNameTok, MD, Range);
+    Second->Defined(MacroNameTok, MD, Range);
   }
 
   virtual void SourceRangeSkipped(SourceRange Range) {
@@ -404,16 +472,17 @@ public:
   }
 
   /// \brief Hook called whenever an \#if is seen.
-  virtual void If(SourceLocation Loc, SourceRange ConditionRange) {
-    First->If(Loc, ConditionRange);
-    Second->If(Loc, ConditionRange);
+  virtual void If(SourceLocation Loc, SourceRange ConditionRange,
+                  bool ConditionValue) {
+    First->If(Loc, ConditionRange, ConditionValue);
+    Second->If(Loc, ConditionRange, ConditionValue);
   }
 
-  /// \brief Hook called whenever an \#if is seen.
+  /// \brief Hook called whenever an \#elif is seen.
   virtual void Elif(SourceLocation Loc, SourceRange ConditionRange,
-                    SourceLocation IfLoc) {
-    First->Elif(Loc, ConditionRange, IfLoc);
-    Second->Elif(Loc, ConditionRange, IfLoc);
+                    bool ConditionValue, SourceLocation IfLoc) {
+    First->Elif(Loc, ConditionRange, ConditionValue, IfLoc);
+    Second->Elif(Loc, ConditionRange, ConditionValue, IfLoc);
   }
 
   /// \brief Hook called whenever an \#ifdef is seen.
diff --git a/include/clang/Lex/PPConditionalDirectiveRecord.h b/include/clang/Lex/PPConditionalDirectiveRecord.h
index b9a22529e205..54a132d586d1 100644
--- a/include/clang/Lex/PPConditionalDirectiveRecord.h
+++ b/include/clang/Lex/PPConditionalDirectiveRecord.h
@@ -86,9 +86,10 @@ public:
   SourceLocation findConditionalDirectiveRegionLoc(SourceLocation Loc) const;
 
 private:
-  virtual void If(SourceLocation Loc, SourceRange ConditionRange);
+  virtual void If(SourceLocation Loc, SourceRange ConditionRange,
+                  bool ConditionValue);
   virtual void Elif(SourceLocation Loc, SourceRange ConditionRange,
-                    SourceLocation IfLoc);
+                    bool ConditionValue, SourceLocation IfLoc);
   virtual void Ifdef(SourceLocation Loc, const Token &MacroNameTok,
                      const MacroDirective *MD);
   virtual void Ifndef(SourceLocation Loc, const Token &MacroNameTok,
diff --git a/include/clang/Lex/PTHLexer.h b/include/clang/Lex/PTHLexer.h
index a9276e86b726..d748bc1f7dff 100644
--- a/include/clang/Lex/PTHLexer.h
+++ b/include/clang/Lex/PTHLexer.h
@@ -68,7 +68,7 @@ public:
   ~PTHLexer() {}
 
   /// Lex - Return the next token.
-  void Lex(Token &Tok);
+  bool Lex(Token &Tok);
 
   void getEOF(Token &Tok);
 
diff --git a/include/clang/Lex/PreprocessingRecord.h b/include/clang/Lex/PreprocessingRecord.h
index db74352aa81e..2584340f6ec7 100644
--- a/include/clang/Lex/PreprocessingRecord.h
+++ b/include/clang/Lex/PreprocessingRecord.h
@@ -576,7 +576,8 @@ namespace clang {
     virtual void Ifndef(SourceLocation Loc, const Token &MacroNameTok,
                         const MacroDirective *MD);
     /// \brief Hook called whenever the 'defined' operator is seen.
-    virtual void Defined(const Token &MacroNameTok, const MacroDirective *MD);
+    virtual void Defined(const Token &MacroNameTok, const MacroDirective *MD,
+                         SourceRange Range);
 
     void addMacroExpansion(const Token &Id, const MacroInfo *MI,
                            SourceRange Range);
diff --git a/include/clang/Lex/Preprocessor.h b/include/clang/Lex/Preprocessor.h
index c5981777cd29..223fd470eca1 100644
--- a/include/clang/Lex/Preprocessor.h
+++ b/include/clang/Lex/Preprocessor.h
@@ -20,6 +20,7 @@
 #include "clang/Basic/SourceLocation.h"
 #include "clang/Lex/Lexer.h"
 #include "clang/Lex/MacroInfo.h"
+#include "clang/Lex/ModuleMap.h"
 #include "clang/Lex/PPCallbacks.h"
 #include "clang/Lex/PTHLexer.h"
 #include "clang/Lex/PTHManager.h"
@@ -221,7 +222,10 @@ class Preprocessor : public RefCountedBase<Preprocessor> {
 
   /// \brief The module import path that we're currently processing.
   SmallVector<std::pair<IdentifierInfo *, SourceLocation>, 2> ModuleImportPath;
-  
+
+  /// \brief Whether the last token we lexed was an '@'.
+  bool LastTokenWasAt;
+
   /// \brief Whether the module import expectes an identifier next. Otherwise,
   /// it expects a '.' or ';'.
   bool ModuleImportExpectsIdentifier;
@@ -457,6 +461,10 @@ public:
   /// \brief Retrieve the module loader associated with this preprocessor.
   ModuleLoader &getModuleLoader() const { return TheModuleLoader; }
 
+  bool hadModuleLoaderFatalFailure() const {
+    return TheModuleLoader.HadFatalFailure;
+  }
+
   /// \brief True if we are currently preprocessing a #if or #elif directive
   bool isParsingIfOrElifDirective() const { 
     return ParsingIfOrElifDirective;
@@ -711,17 +719,8 @@ public:
   /// caching of tokens is on.
   bool isBacktrackEnabled() const { return !BacktrackPositions.empty(); }
 
-  /// Lex - To lex a token from the preprocessor, just pull a token from the
-  /// current lexer or macro object.
-  void Lex(Token &Result) {
-    switch (CurLexerKind) {
-    case CLK_Lexer: CurLexer->Lex(Result); break;
-    case CLK_PTHLexer: CurPTHLexer->Lex(Result); break;
-    case CLK_TokenLexer: CurTokenLexer->Lex(Result); break;
-    case CLK_CachingLexer: CachingLex(Result); break;
-    case CLK_LexAfterModuleImport: LexAfterModuleImport(Result); break;
-    }
-  }
+  /// Lex - Lex the next token for this preprocessor.
+  void Lex(Token &Result);
 
   void LexAfterModuleImport(Token &Result);
 
@@ -828,6 +827,13 @@ public:
       AnnotatePreviousCachedTokens(Tok);
   }
 
+  /// Get the location of the last cached token, suitable for setting the end
+  /// location of an annotation token.
+  SourceLocation getLastCachedTokenLocation() const {
+    assert(CachedLexPos != 0);
+    return CachedTokens[CachedLexPos-1].getLocation();
+  }
+
   /// \brief Replace the last token with an annotation token.
   ///
   /// Like AnnotateCachedTokens(), this routine replaces an
@@ -989,8 +995,9 @@ public:
 
   /// \brief Relex the token at the specified location.
   /// \returns true if there was a failure, false on success.
-  bool getRawToken(SourceLocation Loc, Token &Result) {
-    return Lexer::getRawToken(Loc, Result, SourceMgr, LangOpts);
+  bool getRawToken(SourceLocation Loc, Token &Result,
+                   bool IgnoreWhiteSpace = false) {
+    return Lexer::getRawToken(Loc, Result, SourceMgr, LangOpts, IgnoreWhiteSpace);
   }
 
   /// getSpellingOfSingleCharacterNumericConstant - Tok is a numeric constant
@@ -1155,7 +1162,10 @@ public:
   /// identifier and has filled in the tokens IdentifierInfo member.  This
   /// callback potentially macro expands it or turns it into a named token (like
   /// 'for').
-  void HandleIdentifier(Token &Identifier);
+  ///
+  /// \returns true if we actually computed a token, false if we need to
+  /// lex again.
+  bool HandleIdentifier(Token &Identifier);
 
 
   /// HandleEndOfFile - This callback is invoked when the lexer hits the end of
@@ -1216,12 +1226,12 @@ public:
   ///
   /// Returns null on failure.  \p isAngled indicates whether the file
   /// reference is for system \#include's or not (i.e. using <> instead of "").
-  const FileEntry *LookupFile(StringRef Filename,
+  const FileEntry *LookupFile(SourceLocation FilenameLoc, StringRef Filename,
                               bool isAngled, const DirectoryLookup *FromDir,
                               const DirectoryLookup *&CurDir,
                               SmallVectorImpl<char> *SearchPath,
                               SmallVectorImpl<char> *RelativePath,
-                              Module **SuggestedModule,
+                              ModuleMap::KnownHeader *SuggestedModule,
                               bool SkipCache = false);
 
   /// GetCurLookup - The DirectoryLookup structure used to find the current
@@ -1273,6 +1283,8 @@ private:
     IncludeMacroStack.pop_back();
   }
 
+  void PropagateLineStartLeadingSpaceInfo(Token &Result);
+
   /// \brief Allocate a new MacroInfo object.
   MacroInfo *AllocateMacroInfo();
 
@@ -1329,7 +1341,7 @@ private:
 
   /// HandleMacroExpandedIdentifier - If an identifier token is read that is to
   /// be expanded as a macro, handle it and return the next token as 'Tok'.  If
-  /// the macro should not be expanded return true, otherwise return false.
+  /// we lexed a token, return true; otherwise the caller should lex again.
   bool HandleMacroExpandedIdentifier(Token &Tok, MacroDirective *MD);
 
   /// \brief Cache macro expanded tokens for TokenLexers.
@@ -1400,7 +1412,7 @@ private:
   bool InCachingLexMode() const {
     // If the Lexer pointers are 0 and IncludeMacroStack is empty, it means
     // that we are past EOF, not that we are in CachingLex mode.
-    return CurPPLexer == 0 && CurTokenLexer == 0 && CurPTHLexer == 0 &&
+    return !CurPPLexer && !CurTokenLexer && !CurPTHLexer &&
            !IncludeMacroStack.empty();
   }
   void EnterCachingLexMode();
@@ -1432,8 +1444,32 @@ private:
   void HandleImportDirective(SourceLocation HashLoc, Token &Tok);
   void HandleMicrosoftImportDirective(Token &Tok);
 
+  // Module inclusion testing.
+  /// \brief Find the module for the source or header file that \p FilenameLoc
+  /// points to.
+  Module *getModuleForLocation(SourceLocation FilenameLoc);
+
+  /// \brief Verify that a private header is included only from within its
+  /// module.
+  bool violatesPrivateInclude(Module *RequestingModule,
+                              const FileEntry *IncFileEnt,
+                              ModuleMap::ModuleHeaderRole Role,
+                              Module *RequestedModule);
+
+  /// \brief Verify that a module includes headers only from modules that it
+  /// has declared that it uses.
+  bool violatesUseDeclarations(Module *RequestingModule,
+                               Module *RequestedModule);
+
+  /// \brief Verify that it is legal for the source file that \p FilenameLoc
+  /// points to to include the file \p Filename.
+  ///
+  /// Tries to reuse \p IncFileEnt.
+  void verifyModuleInclude(SourceLocation FilenameLoc, StringRef Filename,
+                           const FileEntry *IncFileEnt);
+
   // Macro handling.
-  void HandleDefineDirective(Token &Tok);
+  void HandleDefineDirective(Token &Tok, bool ImmediatelyAfterTopLevelIfndef);
   void HandleUndefDirective(Token &Tok);
 
   // Conditional Inclusion.
@@ -1445,7 +1481,8 @@ private:
   void HandleElifDirective(Token &Tok);
 
   // Pragmas.
-  void HandlePragmaDirective(unsigned Introducer);
+  void HandlePragmaDirective(SourceLocation IntroducerLoc,
+                             PragmaIntroducerKind Introducer);
 public:
   void HandlePragmaOnce(Token &OnceTok);
   void HandlePragmaMark();
diff --git a/include/clang/Lex/PreprocessorLexer.h b/include/clang/Lex/PreprocessorLexer.h
index 20fb8a0c4804..27a8df43a274 100644
--- a/include/clang/Lex/PreprocessorLexer.h
+++ b/include/clang/Lex/PreprocessorLexer.h
@@ -111,9 +111,9 @@ protected:
   /// stack, returning information about it.  If the conditional stack is empty,
   /// this returns true and does not fill in the arguments.
   bool popConditionalLevel(PPConditionalInfo &CI) {
-    if (ConditionalStack.empty()) return true;
-    CI = ConditionalStack.back();
-    ConditionalStack.pop_back();
+    if (ConditionalStack.empty())
+      return true;
+    CI = ConditionalStack.pop_back_val();
     return false;
   }
 
diff --git a/include/clang/Lex/Token.h b/include/clang/Lex/Token.h
index bcbe9c913be1..4f6391d6502d 100644
--- a/include/clang/Lex/Token.h
+++ b/include/clang/Lex/Token.h
@@ -71,13 +71,16 @@ public:
 
   // Various flags set per token:
   enum TokenFlags {
-    StartOfLine   = 0x01,  // At start of line or only after whitespace.
-    LeadingSpace  = 0x02,  // Whitespace exists before this token.
+    StartOfLine   = 0x01,  // At start of line or only after whitespace
+                           // (considering the line after macro expansion).
+    LeadingSpace  = 0x02,  // Whitespace exists before this token (considering 
+                           // whitespace after macro expansion).
     DisableExpand = 0x04,  // This identifier may never be macro expanded.
     NeedsCleaning = 0x08,  // Contained an escaped newline or trigraph.
     LeadingEmptyMacro = 0x10, // Empty macro exists before this token.
     HasUDSuffix = 0x20,    // This string or character literal has a ud-suffix.
-    HasUCN = 0x40          // This identifier contains a UCN.
+    HasUCN = 0x40,         // This identifier contains a UCN.
+    IgnoredComma = 0x80    // This comma is not a macro argument separator (MS).
   };
 
   tok::TokenKind getKind() const { return (tok::TokenKind)Kind; }
diff --git a/include/clang/Lex/TokenLexer.h b/include/clang/Lex/TokenLexer.h
index 090402a811e2..7c8cfd028a28 100644
--- a/include/clang/Lex/TokenLexer.h
+++ b/include/clang/Lex/TokenLexer.h
@@ -136,7 +136,7 @@ public:
   unsigned isNextTokenLParen() const;
 
   /// Lex - Lex and return a token from this macro stream.
-  void Lex(Token &Tok);
+  bool Lex(Token &Tok);
 
   /// isParsingPreprocessorDirective - Return true if we are in the middle of a
   /// preprocessor directive.
@@ -181,6 +181,8 @@ private:
   /// macro definition.
   void updateLocForMacroArgTokens(SourceLocation ArgIdSpellLoc,
                                   Token *begin_tokens, Token *end_tokens);
+
+  void PropagateLineStartLeadingSpaceInfo(Token &Result);
 };
 
 }  // end namespace clang
diff --git a/include/clang/Parse/CMakeLists.txt b/include/clang/Parse/CMakeLists.txt
index d20708e58c55..ed80c1889c7d 100644
--- a/include/clang/Parse/CMakeLists.txt
+++ b/include/clang/Parse/CMakeLists.txt
@@ -1,7 +1,12 @@
-clang_tablegen(AttrExprArgs.inc -gen-clang-attr-expr-args-list
+clang_tablegen(AttrIdentifierArg.inc -gen-clang-attr-identifier-arg-list
   -I ${CMAKE_CURRENT_SOURCE_DIR}/../../
   SOURCE ../Basic/Attr.td
-  TARGET ClangAttrExprArgs)
+  TARGET ClangAttrIdentifierArg)
+
+clang_tablegen(AttrTypeArg.inc -gen-clang-attr-type-arg-list
+  -I ${CMAKE_CURRENT_SOURCE_DIR}/../../
+  SOURCE ../Basic/Attr.td
+  TARGET ClangAttrTypeArg)
 
 clang_tablegen(AttrLateParsed.inc -gen-clang-attr-late-parsed-list
   -I ${CMAKE_CURRENT_SOURCE_DIR}/../../
diff --git a/include/clang/Parse/Makefile b/include/clang/Parse/Makefile
index fb63175ba9b3..00d41fafddeb 100644
--- a/include/clang/Parse/Makefile
+++ b/include/clang/Parse/Makefile
@@ -1,19 +1,25 @@
 CLANG_LEVEL := ../../..
 TD_SRC_DIR = $(PROJ_SRC_DIR)/../Basic
-BUILT_SOURCES = AttrExprArgs.inc AttrLateParsed.inc
+BUILT_SOURCES = AttrIdentifierArg.inc AttrLateParsed.inc AttrTypeArg.inc
 
 TABLEGEN_INC_FILES_COMMON = 1
 
 include $(CLANG_LEVEL)/Makefile
 
-$(ObjDir)/AttrExprArgs.inc.tmp : $(TD_SRC_DIR)/Attr.td $(CLANG_TBLGEN) \
+$(ObjDir)/AttrIdentifierArg.inc.tmp : $(TD_SRC_DIR)/Attr.td $(CLANG_TBLGEN) \
                                    $(ObjDir)/.dir
-	$(Echo) "Building Clang attribute expression arguments table with tblgen"
-	$(Verb) $(ClangTableGen) -gen-clang-attr-expr-args-list -o $(call SYSPATH, $@) \
+	$(Echo) "Building Clang attribute identifier argument table with tblgen"
+	$(Verb) $(ClangTableGen) -gen-clang-attr-identifier-arg-list -o $(call SYSPATH, $@) \
+		-I $(PROJ_SRC_DIR)/../../ $<
+
+$(ObjDir)/AttrTypeArg.inc.tmp : $(TD_SRC_DIR)/Attr.td $(CLANG_TBLGEN) \
+                                   $(ObjDir)/.dir
+	$(Echo) "Building Clang attribute type argument table with tblgen"
+	$(Verb) $(ClangTableGen) -gen-clang-attr-type-arg-list -o $(call SYSPATH, $@) \
 		-I $(PROJ_SRC_DIR)/../../ $<
 
 $(ObjDir)/AttrLateParsed.inc.tmp : $(TD_SRC_DIR)/Attr.td $(CLANG_TBLGEN) \
                                    $(ObjDir)/.dir
 	$(Echo) "Building Clang attribute late-parsed table with tblgen"
 	$(Verb) $(ClangTableGen) -gen-clang-attr-late-parsed-list -o $(call SYSPATH, $@) \
-		-I $(PROJ_SRC_DIR)/../../ $<
\ No newline at end of file
+		-I $(PROJ_SRC_DIR)/../../ $<
diff --git a/include/clang/Parse/ParseDiagnostic.h b/include/clang/Parse/ParseDiagnostic.h
index 0d4729297057..b593806ff391 100644
--- a/include/clang/Parse/ParseDiagnostic.h
+++ b/include/clang/Parse/ParseDiagnostic.h
@@ -16,7 +16,7 @@ namespace clang {
   namespace diag {
     enum {
 #define DIAG(ENUM,FLAGS,DEFAULT_MAPPING,DESC,GROUP,\
-             SFINAE,ACCESS,NOWERROR,SHOWINSYSHEADER,CATEGORY) ENUM,
+             SFINAE,NOWERROR,SHOWINSYSHEADER,CATEGORY) ENUM,
 #define PARSESTART
 #include "clang/Basic/DiagnosticParseKinds.inc"
 #undef DIAG
diff --git a/include/clang/Parse/Parser.h b/include/clang/Parse/Parser.h
index 1029a90c55c8..bd49988c5b00 100644
--- a/include/clang/Parse/Parser.h
+++ b/include/clang/Parse/Parser.h
@@ -45,6 +45,7 @@ namespace clang {
   class InMessageExpressionRAIIObject;
   class PoisonSEHIdentifiersRAIIObject;
   class VersionTuple;
+  class OMPClause;
 
 /// Parser - This implements a parser for the C family of languages.  After
 /// parsing units of the grammar, productions are invoked to handle whatever has
@@ -101,15 +102,17 @@ class Parser : public CodeCompletionHandler {
 
   /// Contextual keywords for Microsoft extensions.
   IdentifierInfo *Ident__except;
+  mutable IdentifierInfo *Ident_sealed;
 
   /// Ident_super - IdentifierInfo for "super", to support fast
   /// comparison.
   IdentifierInfo *Ident_super;
-  /// Ident_vector and Ident_pixel - cached IdentifierInfo's for
-  /// "vector" and "pixel" fast comparison.  Only present if
-  /// AltiVec enabled.
+  /// Ident_vector, Ident_pixel, Ident_bool - cached IdentifierInfo's
+  /// for "vector", "pixel", and "bool" fast comparison.  Only present
+  /// if AltiVec enabled.
   IdentifierInfo *Ident_vector;
   IdentifierInfo *Ident_pixel;
+  IdentifierInfo *Ident_bool;
 
   /// Objective-C contextual keywords.
   mutable IdentifierInfo *Ident_instancetype;
@@ -150,6 +153,7 @@ class Parser : public CodeCompletionHandler {
   OwningPtr<CommentHandler> CommentSemaHandler;
   OwningPtr<PragmaHandler> OpenMPHandler;
   OwningPtr<PragmaHandler> MSCommentHandler;
+  OwningPtr<PragmaHandler> MSDetectMismatchHandler;
 
   /// Whether the '>' token acts as an operator or not. This will be
   /// true except when we are parsing an expression within a C++
@@ -398,7 +402,8 @@ private:
   /// \brief Abruptly cut off parsing; mainly used when we have reached the
   /// code-completion point.
   void cutOffParsing() {
-    PP.setCodeCompletionReached();
+    if (PP.isCodeCompletionEnabled())
+      PP.setCodeCompletionReached();
     // Cut off parsing by acting as if we reached the end-of-file.
     Tok.setKind(tok::eof);
   }
@@ -419,6 +424,10 @@ private:
   void HandlePragmaMSStruct();
 
   /// \brief Handle the annotation token produced for
+  /// #pragma comment...
+  void HandlePragmaMSComment();
+
+  /// \brief Handle the annotation token produced for
   /// #pragma align...
   void HandlePragmaAlign();
 
@@ -525,7 +534,8 @@ private:
                        bool &isInvalid) {
     if (!getLangOpts().AltiVec ||
         (Tok.getIdentifierInfo() != Ident_vector &&
-         Tok.getIdentifierInfo() != Ident_pixel))
+         Tok.getIdentifierInfo() != Ident_pixel &&
+         Tok.getIdentifierInfo() != Ident_bool))
       return false;
 
     return TryAltiVecTokenOutOfLine(DS, Loc, PrevSpec, DiagID, isInvalid);
@@ -545,6 +555,13 @@ private:
                                 const char *&PrevSpec, unsigned &DiagID,
                                 bool &isInvalid);
 
+  /// TryKeywordIdentFallback - For compatibility with system headers using
+  /// keywords as identifiers, attempt to convert the current token to an
+  /// identifier and optionally disable the keyword for the remainder of the
+  /// translation unit. This returns false if the token was not replaced,
+  /// otherwise emits a diagnostic and returns true.
+  bool TryKeywordIdentFallback(bool DisableKeyword);
+
   /// \brief Get the TemplateIdAnnotation from the token.
   TemplateIdAnnotation *takeTemplateIdAnnotation(const Token &tok);
 
@@ -599,6 +616,7 @@ private:
       assert(!isActive && "Forgot to call Commit or Revert!");
     }
   };
+  class UnannotatedTentativeParsingAction;
 
   /// ObjCDeclContextSwitch - An object used to switch context from
   /// an objective-c decl context to its enclosing decl context and
@@ -725,32 +743,45 @@ private:
   void CheckNestedObjCContexts(SourceLocation AtLoc);
 
 public:
+
+  /// \brief Control flags for SkipUntil functions.
+  enum SkipUntilFlags {
+    StopAtSemi = 1 << 0,  ///< Stop skipping at semicolon
+    /// \brief Stop skipping at specified token, but don't skip the token itself
+    StopBeforeMatch = 1 << 1,
+    StopAtCodeCompletion = 1 << 2 ///< Stop at code completion
+  };
+
+  friend LLVM_CONSTEXPR SkipUntilFlags operator|(SkipUntilFlags L,
+                                                 SkipUntilFlags R) {
+    return static_cast<SkipUntilFlags>(static_cast<unsigned>(L) |
+                                       static_cast<unsigned>(R));
+  }
+
   /// SkipUntil - Read tokens until we get to the specified token, then consume
-  /// it (unless DontConsume is true).  Because we cannot guarantee that the
-  /// token will ever occur, this skips to the next token, or to some likely
-  /// good stopping point.  If StopAtSemi is true, skipping will stop at a ';'
-  /// character.
+  /// it (unless StopBeforeMatch is specified).  Because we cannot guarantee
+  /// that the token will ever occur, this skips to the next token, or to some
+  /// likely good stopping point.  If Flags has StopAtSemi flag, skipping will
+  /// stop at a ';' character.
   ///
   /// If SkipUntil finds the specified token, it returns true, otherwise it
   /// returns false.
-  bool SkipUntil(tok::TokenKind T, bool StopAtSemi = true,
-                 bool DontConsume = false, bool StopAtCodeCompletion = false) {
-    return SkipUntil(llvm::makeArrayRef(T), StopAtSemi, DontConsume,
-                     StopAtCodeCompletion);
+  bool SkipUntil(tok::TokenKind T,
+                 SkipUntilFlags Flags = static_cast<SkipUntilFlags>(0)) {
+    return SkipUntil(llvm::makeArrayRef(T), Flags);
   }
-  bool SkipUntil(tok::TokenKind T1, tok::TokenKind T2, bool StopAtSemi = true,
-                 bool DontConsume = false, bool StopAtCodeCompletion = false) {
+  bool SkipUntil(tok::TokenKind T1, tok::TokenKind T2,
+                 SkipUntilFlags Flags = static_cast<SkipUntilFlags>(0)) {
     tok::TokenKind TokArray[] = {T1, T2};
-    return SkipUntil(TokArray, StopAtSemi, DontConsume,StopAtCodeCompletion);
+    return SkipUntil(TokArray, Flags);
   }
   bool SkipUntil(tok::TokenKind T1, tok::TokenKind T2, tok::TokenKind T3,
-                 bool StopAtSemi = true, bool DontConsume = false,
-                 bool StopAtCodeCompletion = false) {
+                 SkipUntilFlags Flags = static_cast<SkipUntilFlags>(0)) {
     tok::TokenKind TokArray[] = {T1, T2, T3};
-    return SkipUntil(TokArray, StopAtSemi, DontConsume,StopAtCodeCompletion);
+    return SkipUntil(TokArray, Flags);
   }
-  bool SkipUntil(ArrayRef<tok::TokenKind> Toks, bool StopAtSemi = true,
-                 bool DontConsume = false, bool StopAtCodeCompletion = false);
+  bool SkipUntil(ArrayRef<tok::TokenKind> Toks,
+                 SkipUntilFlags Flags = static_cast<SkipUntilFlags>(0));
 
   /// SkipMalformedDecl - Read tokens until we get to some likely good stopping
   /// point for skipping past a simple-declaration.
@@ -1042,32 +1073,21 @@ private:
     SourceRange getSourceRange() const LLVM_READONLY;
   };
 
-  /// \brief Contains a late templated function.
-  /// Will be parsed at the end of the translation unit.
-  struct LateParsedTemplatedFunction {
-    explicit LateParsedTemplatedFunction(Decl *MD)
-      : D(MD) {}
-
-    CachedTokens Toks;
-
-    /// \brief The template function declaration to be late parsed.
-    Decl *D;
-  };
-
   void LexTemplateFunctionForLateParsing(CachedTokens &Toks);
-  void ParseLateTemplatedFuncDef(LateParsedTemplatedFunction &LMT);
-  typedef llvm::DenseMap<const FunctionDecl*, LateParsedTemplatedFunction*>
-    LateParsedTemplateMapT;
-  LateParsedTemplateMapT LateParsedTemplateMap;
+  void ParseLateTemplatedFuncDef(LateParsedTemplate &LPT);
 
-  static void LateTemplateParserCallback(void *P, const FunctionDecl *FD);
-  void LateTemplateParser(const FunctionDecl *FD);
+  static void LateTemplateParserCallback(void *P, LateParsedTemplate &LPT);
 
   Sema::ParsingClassState
   PushParsingClass(Decl *TagOrTemplate, bool TopLevelClass, bool IsInterface);
   void DeallocateParsedClasses(ParsingClass *Class);
   void PopParsingClass(Sema::ParsingClassState);
 
+  enum CachedInitKind {
+    CIK_DefaultArgument,
+    CIK_DefaultInitializer
+  };
+
   NamedDecl *ParseCXXInlineMethodDef(AccessSpecifier AS,
                                 AttributeList *AccessAttrs,
                                 ParsingDeclarator &D,
@@ -1089,6 +1109,8 @@ private:
   void ParseLexedMemberInitializer(LateParsedMemberInitializer &MI);
   void ParseLexedObjCMethodDefs(LexedMethod &LM, bool parseMethod);
   bool ConsumeAndStoreFunctionPrologue(CachedTokens &Toks);
+  bool ConsumeAndStoreInitializer(CachedTokens &Toks, CachedInitKind CIK);
+  bool ConsumeAndStoreConditional(CachedTokens &Toks);
   bool ConsumeAndStoreUntil(tok::TokenKind T1,
                             CachedTokens &Toks,
                             bool StopAtSemi = true,
@@ -1274,6 +1296,12 @@ private:
                                                    ArrayRef<Expr *> Args) = 0,
                            Expr *Data = 0);
 
+  /// ParseSimpleExpressionList - A simple comma-separated list of expressions,
+  /// used for misc language extensions.
+  bool ParseSimpleExpressionList(SmallVectorImpl<Expr*> &Exprs,
+                                 SmallVectorImpl<SourceLocation> &CommaLocs);
+
+
   /// ParenParseOption - Control what ParseParenExpression will parse.
   enum ParenParseOption {
     SimpleExpr,      // Only parse '(' expression ')'
@@ -1325,7 +1353,8 @@ private:
   // [...] () -> type {...}
   ExprResult ParseLambdaExpression();
   ExprResult TryParseLambdaExpression();
-  Optional<unsigned> ParseLambdaIntroducer(LambdaIntroducer &Intro);
+  Optional<unsigned> ParseLambdaIntroducer(LambdaIntroducer &Intro,
+                                           bool *SkippedInits = 0);
   bool TryParseLambdaIntroducer(LambdaIntroducer &Intro);
   ExprResult ParseLambdaExpressionAfterIntroducer(
                LambdaIntroducer &Intro);
@@ -1461,10 +1490,7 @@ private:
   /// A SmallVector of types.
   typedef SmallVector<ParsedType, 12> TypeVector;
 
-  StmtResult ParseStatement(SourceLocation *TrailingElseLoc = 0) {
-    StmtVector Stmts;
-    return ParseStatementOrDeclaration(Stmts, true, TrailingElseLoc);
-  }
+  StmtResult ParseStatement(SourceLocation *TrailingElseLoc = 0);
   StmtResult ParseStatementOrDeclaration(StmtVector &Stmts,
                                          bool OnlyStatement,
                                          SourceLocation *TrailingElseLoc = 0);
@@ -1628,6 +1654,9 @@ private:
                                   AccessSpecifier AS = AS_none,
                                   DeclSpecContext DSC = DSC_normal,
                                   LateParsedAttrList *LateAttrs = 0);
+  bool DiagnoseMissingSemiAfterTagDefinition(DeclSpec &DS, AccessSpecifier AS,
+                                             DeclSpecContext DSContext,
+                                             LateParsedAttrList *LateAttrs = 0);
 
   void ParseSpecifierQualifierList(DeclSpec &DS, AccessSpecifier AS = AS_none,
                                    DeclSpecContext DSC = DSC_normal);
@@ -1800,6 +1829,11 @@ private:
   isCXXDeclarationSpecifier(TPResult BracedCastResult = TPResult::False(),
                             bool *HasMissingTypename = 0);
 
+  /// Given that isCXXDeclarationSpecifier returns \c TPResult::True or
+  /// \c TPResult::Ambiguous, determine whether the decl-specifier would be
+  /// a type-specifier other than a cv-qualifier.
+  bool isCXXDeclarationSpecifierAType();
+
   /// \brief Determine whether an identifier has been tentatively declared as a
   /// non-type. Such tentative declarations should not be found to name a type
   /// during a tentative parse, but also should not be annotated as a non-type.
@@ -1812,15 +1846,18 @@ private:
   // that more tentative parsing is necessary for disambiguation.
   // They all consume tokens, so backtracking should be used after calling them.
 
-  TPResult TryParseDeclarationSpecifier(bool *HasMissingTypename = 0);
   TPResult TryParseSimpleDeclaration(bool AllowForRangeDecl);
   TPResult TryParseTypeofSpecifier();
   TPResult TryParseProtocolQualifiers();
+  TPResult TryParsePtrOperatorSeq();
+  TPResult TryParseOperatorId();
   TPResult TryParseInitDeclaratorList();
   TPResult TryParseDeclarator(bool mayBeAbstract, bool mayHaveIdentifier=true);
-  TPResult TryParseParameterDeclarationClause(bool *InvalidAsDeclaration = 0);
+  TPResult TryParseParameterDeclarationClause(bool *InvalidAsDeclaration = 0,
+                                              bool VersusTemplateArg = false);
   TPResult TryParseFunctionDeclarator();
   TPResult TryParseBracketDeclarator();
+  TPResult TryConsumeDeclarationSpecifier();
 
 public:
   TypeResult ParseTypeName(SourceRange *Range = 0,
@@ -1866,6 +1903,10 @@ private:
   // for example, attributes appertain to decl specifiers.
   void ProhibitCXX11Attributes(ParsedAttributesWithRange &attrs);
 
+  /// \brief Diagnose and skip C++11 attributes that appear in syntactic
+  /// locations where attributes are not allowed.
+  void DiagnoseAndSkipCXX11Attributes();
+
   void MaybeParseGNUAttributes(Declarator &D,
                                LateParsedAttrList *LateAttrs = 0) {
     if (Tok.is(tok::kw___attribute)) {
@@ -1891,6 +1932,7 @@ private:
                              IdentifierInfo *ScopeName,
                              SourceLocation ScopeLoc,
                              AttributeList::Syntax Syntax);
+  IdentifierLoc *ParseIdentifierLoc();
 
   void MaybeParseCXX11Attributes(Declarator &D) {
     if (getLangOpts().CPlusPlus11 && isCXX11AttributeSpecifier()) {
@@ -1961,6 +2003,11 @@ private:
                                         ParsedAttributes &Attrs,
                                         SourceLocation *EndLoc);
 
+  void ParseAttributeWithTypeArg(IdentifierInfo &AttrName,
+                                 SourceLocation AttrNameLoc,
+                                 ParsedAttributes &Attrs,
+                                 SourceLocation *EndLoc);
+
   void ParseTypeofSpecifier(DeclSpec &DS);
   SourceLocation ParseDecltypeSpecifier(DeclSpec &DS);
   void AnnotateExistingDecltypeSpecifier(const DeclSpec &DS,
@@ -2024,7 +2071,8 @@ private:
 
   void ParseTypeQualifierListOpt(DeclSpec &DS, bool GNUAttributesAllowed = true,
                                  bool CXX11AttributesAllowed = true,
-                                 bool AtomicAllowed = true);
+                                 bool AtomicAllowed = true,
+                                 bool IdentifierRequired = false);
   void ParseDirectDeclarator(Declarator &D);
   void ParseParenDeclarator(Declarator &D);
   void ParseFunctionDeclarator(Declarator &D,
@@ -2035,11 +2083,11 @@ private:
   bool isFunctionDeclaratorIdentifierList();
   void ParseFunctionDeclaratorIdentifierList(
          Declarator &D,
-         SmallVector<DeclaratorChunk::ParamInfo, 16> &ParamInfo);
+         SmallVectorImpl<DeclaratorChunk::ParamInfo> &ParamInfo);
   void ParseParameterDeclarationClause(
          Declarator &D,
          ParsedAttributes &attrs,
-         SmallVector<DeclaratorChunk::ParamInfo, 16> &ParamInfo,
+         SmallVectorImpl<DeclaratorChunk::ParamInfo> &ParamInfo,
          SourceLocation &EllipsisLoc);
   void ParseBracketDeclarator(Declarator &D);
 
@@ -2060,6 +2108,8 @@ private:
   isCXX11AttributeSpecifier(bool Disambiguate = false,
                             bool OuterMightBeMessageSend = false);
 
+  void DiagnoseUnexpectedNamespace(NamedDecl *Context);
+
   Decl *ParseNamespace(unsigned Context, SourceLocation &DeclEnd,
                        SourceLocation InlineLoc = SourceLocation());
   void ParseInnerNamespace(std::vector<SourceLocation>& IdentLoc,
@@ -2134,9 +2184,44 @@ private:
 
   //===--------------------------------------------------------------------===//
   // OpenMP: Directives and clauses.
+  /// \brief Parses declarative OpenMP directives.
   DeclGroupPtrTy ParseOpenMPDeclarativeDirective();
+  /// \brief Parses simple list of variables.
+  ///
+  /// \param Kind Kind of the directive.
+  /// \param [out] VarList List of referenced variables.
+  /// \param AllowScopeSpecifier true, if the variables can have fully
+  /// qualified names.
+  ///
   bool ParseOpenMPSimpleVarList(OpenMPDirectiveKind Kind,
-                                SmallVectorImpl<DeclarationNameInfo> &IdList);
+                                SmallVectorImpl<Expr *> &VarList,
+                                bool AllowScopeSpecifier);
+  /// \brief Parses declarative or executable directive.
+  StmtResult ParseOpenMPDeclarativeOrExecutableDirective();
+  /// \brief Parses clause of kind \a CKind for directive of a kind \a Kind.
+  ///
+  /// \param DKind Kind of current directive.
+  /// \param CKind Kind of current clause.
+  /// \param FirstClause true, if this is the first clause of a kind \a CKind
+  /// in current directive.
+  ///
+  OMPClause *ParseOpenMPClause(OpenMPDirectiveKind DKind,
+                               OpenMPClauseKind CKind, bool FirstClause);
+  /// \brief Parses clause with a single expression of a kind \a Kind.
+  ///
+  /// \param Kind Kind of current clause.
+  ///
+  OMPClause *ParseOpenMPSingleExprClause(OpenMPClauseKind Kind);
+  /// \brief Parses simple clause of a kind \a Kind.
+  ///
+  /// \param Kind Kind of current clause.
+  ///
+  OMPClause *ParseOpenMPSimpleClause(OpenMPClauseKind Kind);
+  /// \brief Parses clause with the list of variables of a kind \a Kind.
+  ///
+  /// \param Kind Kind of current clause.
+  ///
+  OMPClause *ParseOpenMPVarListClause(OpenMPClauseKind Kind);
 public:
   bool ParseUnqualifiedId(CXXScopeSpec &SS, bool EnteringContext,
                           bool AllowDestructorName,
diff --git a/include/clang/Rewrite/Core/HTMLRewrite.h b/include/clang/Rewrite/Core/HTMLRewrite.h
index 88caf85e6010..3cd04615d826 100644
--- a/include/clang/Rewrite/Core/HTMLRewrite.h
+++ b/include/clang/Rewrite/Core/HTMLRewrite.h
@@ -57,7 +57,7 @@ namespace html {
   ///  in 's' are not interpreted as HTML tags.  Unlike the version of
   ///  EscapeText that rewrites a file, this version by default replaces tabs
   ///  with spaces.
-  std::string EscapeText(const std::string& s,
+  std::string EscapeText(StringRef s,
                          bool EscapeSpaces = false, bool ReplaceTabs = false);
 
   void AddLineNumbers(Rewriter& R, FileID FID);
diff --git a/include/clang/Rewrite/Core/Rewriter.h b/include/clang/Rewrite/Core/Rewriter.h
index cb044aef23fe..2d2917b910b9 100644
--- a/include/clang/Rewrite/Core/Rewriter.h
+++ b/include/clang/Rewrite/Core/Rewriter.h
@@ -40,20 +40,18 @@ class RewriteBuffer {
   /// Deltas - Keep track of all the deltas in the source code due to insertions
   /// and deletions.
   DeltaTree Deltas;
-
-  /// Buffer - This is the actual buffer itself.  Note that using a vector or
-  /// string is a horribly inefficient way to do this, we should use a rope
-  /// instead.
-  typedef RewriteRope BufferTy;
-  BufferTy Buffer;
+  RewriteRope Buffer;
 public:
-  typedef BufferTy::const_iterator iterator;
+  typedef RewriteRope::const_iterator iterator;
   iterator begin() const { return Buffer.begin(); }
   iterator end() const { return Buffer.end(); }
   unsigned size() const { return Buffer.size(); }
 
   /// \brief Write to \p Stream the result of applying all changes to the
   /// original buffer.
+  /// Note that it isn't safe to use this function to overwrite memory mapped
+  /// files in-place (PR17960). Consider using a higher-level utility such as
+  /// Rewriter::overwriteChangedFiles() instead.
   ///
   /// The original buffer is not actually changed.
   raw_ostream &write(raw_ostream &Stream) const;
@@ -149,6 +147,7 @@ public:
   };
 
   typedef std::map<FileID, RewriteBuffer>::iterator buffer_iterator;
+  typedef std::map<FileID, RewriteBuffer>::const_iterator const_buffer_iterator;
 
   explicit Rewriter(SourceManager &SM, const LangOptions &LO)
     : SourceMgr(&SM), LangOpts(&LO) {}
@@ -282,10 +281,12 @@ public:
   // Iterators over rewrite buffers.
   buffer_iterator buffer_begin() { return RewriteBuffers.begin(); }
   buffer_iterator buffer_end() { return RewriteBuffers.end(); }
+  const_buffer_iterator buffer_begin() const { return RewriteBuffers.begin(); }
+  const_buffer_iterator buffer_end() const { return RewriteBuffers.end(); }
 
   /// overwriteChangedFiles - Save all changed files to disk.
   ///
-  /// Returns whether not all changes were saved successfully.
+  /// Returns true if any files were not saved successfully.
   /// Outputs diagnostics via the source manager's diagnostic engine
   /// in case of an error.
   bool overwriteChangedFiles();
diff --git a/include/clang/Sema/AnalysisBasedWarnings.h b/include/clang/Sema/AnalysisBasedWarnings.h
index eeac97332dfb..432c4e23a993 100644
--- a/include/clang/Sema/AnalysisBasedWarnings.h
+++ b/include/clang/Sema/AnalysisBasedWarnings.h
@@ -38,6 +38,7 @@ public:
     unsigned enableCheckFallThrough : 1;
     unsigned enableCheckUnreachable : 1;
     unsigned enableThreadSafetyAnalysis : 1;
+    unsigned enableConsumedAnalysis : 1;
   public:
     Policy();
     void disableCheckFallThrough() { enableCheckFallThrough = 0; }
diff --git a/include/clang/Sema/AttributeList.h b/include/clang/Sema/AttributeList.h
index d5f31779a635..508064def2ca 100644
--- a/include/clang/Sema/AttributeList.h
+++ b/include/clang/Sema/AttributeList.h
@@ -19,6 +19,7 @@
 #include "clang/Basic/VersionTuple.h"
 #include "clang/Sema/Ownership.h"
 #include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/PointerUnion.h"
 #include "llvm/Support/Allocator.h"
 #include <cassert>
 
@@ -44,6 +45,20 @@ struct AvailabilityChange {
   bool isValid() const { return !Version.empty(); }
 };
 
+/// \brief Wraps an identifier and optional source location for the identifier.
+struct IdentifierLoc {
+  SourceLocation Loc;
+  IdentifierInfo *Ident;
+
+  static IdentifierLoc *create(ASTContext &Ctx, SourceLocation Loc,
+                               IdentifierInfo *Ident);
+};
+
+/// \brief A union of the various pointer types that can be passed to an
+/// AttributeList as an argument.
+typedef llvm::PointerUnion<Expr*, IdentifierLoc*> ArgsUnion;
+typedef llvm::SmallVector<ArgsUnion, 12U> ArgsVector;
+
 /// AttributeList - Represents a syntactic attribute.
 ///
 /// For a GNU attribute, there are four forms of this construct:
@@ -66,13 +81,12 @@ public:
     /// __ptr16, alignas(...), etc.
     AS_Keyword
   };
+
 private:
   IdentifierInfo *AttrName;
   IdentifierInfo *ScopeName;
-  IdentifierInfo *ParmName;
   SourceRange AttrRange;
   SourceLocation ScopeLoc;
-  SourceLocation ParmLoc;
   SourceLocation EllipsisLoc;
 
   /// The number of expression arguments this attribute has.
@@ -100,6 +114,9 @@ private:
   /// Microsoft __delcspec(property) attribute.
   unsigned IsProperty : 1;
 
+  /// True if this has a ParsedType
+  unsigned HasParsedType : 1;
+
   unsigned AttrKind : 8;
 
   /// \brief The location of the 'unavailable' keyword in an
@@ -114,22 +131,27 @@ private:
   /// The next attribute allocated in the current Pool.
   AttributeList *NextInPool;
 
-  Expr **getArgsBuffer() {
-    return reinterpret_cast<Expr**>(this+1);
+  /// Arguments, if any, are stored immediately following the object.
+  ArgsUnion *getArgsBuffer() {
+    return reinterpret_cast<ArgsUnion*>(this+1);
   }
-  Expr * const *getArgsBuffer() const {
-    return reinterpret_cast<Expr* const *>(this+1);
+  ArgsUnion const *getArgsBuffer() const {
+    return reinterpret_cast<ArgsUnion const *>(this+1);
   }
 
   enum AvailabilitySlot {
     IntroducedSlot, DeprecatedSlot, ObsoletedSlot
   };
 
-  AvailabilityChange &getAvailabilitySlot(AvailabilitySlot index) {
-    return reinterpret_cast<AvailabilityChange*>(this+1)[index];
+  /// Availability information is stored immediately following the arguments,
+  /// if any, at the end of the object.
+  AvailabilityChange &getAvailabilitySlot(AvailabilitySlot index) {    
+    return reinterpret_cast<AvailabilityChange*>(getArgsBuffer()
+                                                 + NumArgs)[index];
   }
   const AvailabilityChange &getAvailabilitySlot(AvailabilitySlot index) const {
-    return reinterpret_cast<const AvailabilityChange*>(this+1)[index];
+    return reinterpret_cast<const AvailabilityChange*>(getArgsBuffer()
+                                                       + NumArgs)[index];
   }
 
 public:
@@ -145,14 +167,20 @@ public:
   };
 
 private:
+  /// Type tag information is stored immediately following the arguments, if
+  /// any, at the end of the object.  They are mutually exlusive with
+  /// availability slots.
   TypeTagForDatatypeData &getTypeTagForDatatypeDataSlot() {
-    return *reinterpret_cast<TypeTagForDatatypeData *>(this + 1);
+    return *reinterpret_cast<TypeTagForDatatypeData*>(getArgsBuffer()+NumArgs);
   }
 
   const TypeTagForDatatypeData &getTypeTagForDatatypeDataSlot() const {
-    return *reinterpret_cast<const TypeTagForDatatypeData *>(this + 1);
+    return *reinterpret_cast<const TypeTagForDatatypeData*>(getArgsBuffer()
+                                                            + NumArgs);
   }
 
+  /// The type buffer immediately follows the object and are mutually exclusive
+  /// with arguments.
   ParsedType &getTypeBuffer() {
     return *reinterpret_cast<ParsedType *>(this + 1);
   }
@@ -161,6 +189,8 @@ private:
     return *reinterpret_cast<const ParsedType *>(this + 1);
   }
 
+  /// The property data immediately follows the object is is mutually exclusive
+  /// with arguments.
   PropertyData &getPropertyDataBuffer() {
     assert(IsProperty);
     return *reinterpret_cast<PropertyData*>(this + 1);
@@ -181,36 +211,34 @@ private:
   /// Constructor for attributes with expression arguments.
   AttributeList(IdentifierInfo *attrName, SourceRange attrRange,
                 IdentifierInfo *scopeName, SourceLocation scopeLoc,
-                IdentifierInfo *parmName, SourceLocation parmLoc,
-                Expr **args, unsigned numArgs,
+                ArgsUnion *args, unsigned numArgs,
                 Syntax syntaxUsed, SourceLocation ellipsisLoc)
-    : AttrName(attrName), ScopeName(scopeName), ParmName(parmName),
-      AttrRange(attrRange), ScopeLoc(scopeLoc), ParmLoc(parmLoc),
-      EllipsisLoc(ellipsisLoc), NumArgs(numArgs), SyntaxUsed(syntaxUsed),
-      Invalid(false), UsedAsTypeAttr(false), IsAvailability(false),
-      IsTypeTagForDatatype(false), IsProperty(false), NextInPosition(0),
-      NextInPool(0) {
-    if (numArgs) memcpy(getArgsBuffer(), args, numArgs * sizeof(Expr*));
+    : AttrName(attrName), ScopeName(scopeName), AttrRange(attrRange),
+      ScopeLoc(scopeLoc), EllipsisLoc(ellipsisLoc), NumArgs(numArgs),
+      SyntaxUsed(syntaxUsed), Invalid(false), UsedAsTypeAttr(false),
+      IsAvailability(false), IsTypeTagForDatatype(false), IsProperty(false),
+      HasParsedType(false), NextInPosition(0), NextInPool(0) {
+    if (numArgs) memcpy(getArgsBuffer(), args, numArgs * sizeof(ArgsUnion));
     AttrKind = getKind(getName(), getScopeName(), syntaxUsed);
   }
 
   /// Constructor for availability attributes.
   AttributeList(IdentifierInfo *attrName, SourceRange attrRange,
                 IdentifierInfo *scopeName, SourceLocation scopeLoc,
-                IdentifierInfo *parmName, SourceLocation parmLoc,
-                const AvailabilityChange &introduced,
+                IdentifierLoc *Parm, const AvailabilityChange &introduced,
                 const AvailabilityChange &deprecated,
                 const AvailabilityChange &obsoleted,
                 SourceLocation unavailable, 
                 const Expr *messageExpr,
                 Syntax syntaxUsed)
-    : AttrName(attrName), ScopeName(scopeName), ParmName(parmName),
-      AttrRange(attrRange), ScopeLoc(scopeLoc), ParmLoc(parmLoc), EllipsisLoc(),
-      NumArgs(0), SyntaxUsed(syntaxUsed),
+    : AttrName(attrName), ScopeName(scopeName), AttrRange(attrRange),
+      ScopeLoc(scopeLoc), EllipsisLoc(), NumArgs(1), SyntaxUsed(syntaxUsed),
       Invalid(false), UsedAsTypeAttr(false), IsAvailability(true),
-      IsTypeTagForDatatype(false), IsProperty(false),
+      IsTypeTagForDatatype(false), IsProperty(false), HasParsedType(false),
       UnavailableLoc(unavailable), MessageExpr(messageExpr),
       NextInPosition(0), NextInPool(0) {
+    ArgsUnion PVal(Parm);
+    memcpy(getArgsBuffer(), &PVal, sizeof(ArgsUnion));
     new (&getAvailabilitySlot(IntroducedSlot)) AvailabilityChange(introduced);
     new (&getAvailabilitySlot(DeprecatedSlot)) AvailabilityChange(deprecated);
     new (&getAvailabilitySlot(ObsoletedSlot)) AvailabilityChange(obsoleted);
@@ -220,16 +248,15 @@ private:
   /// Constructor for type_tag_for_datatype attribute.
   AttributeList(IdentifierInfo *attrName, SourceRange attrRange,
                 IdentifierInfo *scopeName, SourceLocation scopeLoc,
-                IdentifierInfo *argumentKindName,
-                SourceLocation argumentKindLoc,
-                ParsedType matchingCType, bool layoutCompatible,
-                bool mustBeNull, Syntax syntaxUsed)
-    : AttrName(attrName), ScopeName(scopeName), ParmName(argumentKindName),
-      AttrRange(attrRange), ScopeLoc(scopeLoc), ParmLoc(argumentKindLoc),
-      EllipsisLoc(), NumArgs(0), SyntaxUsed(syntaxUsed),
+                IdentifierLoc *ArgKind, ParsedType matchingCType,
+                bool layoutCompatible, bool mustBeNull, Syntax syntaxUsed)
+    : AttrName(attrName), ScopeName(scopeName), AttrRange(attrRange),
+      ScopeLoc(scopeLoc), EllipsisLoc(), NumArgs(1), SyntaxUsed(syntaxUsed),
       Invalid(false), UsedAsTypeAttr(false), IsAvailability(false),
-      IsTypeTagForDatatype(true), IsProperty(false), NextInPosition(NULL),
-      NextInPool(NULL) {
+      IsTypeTagForDatatype(true), IsProperty(false), HasParsedType(false),
+      NextInPosition(NULL), NextInPool(NULL) {
+    ArgsUnion PVal(ArgKind);
+    memcpy(getArgsBuffer(), &PVal, sizeof(ArgsUnion));
     TypeTagForDatatypeData &ExtraData = getTypeTagForDatatypeDataSlot();
     new (&ExtraData.MatchingCType) ParsedType(matchingCType);
     ExtraData.LayoutCompatible = layoutCompatible;
@@ -240,14 +267,12 @@ private:
   /// Constructor for attributes with a single type argument.
   AttributeList(IdentifierInfo *attrName, SourceRange attrRange,
                 IdentifierInfo *scopeName, SourceLocation scopeLoc,
-                IdentifierInfo *parmName, SourceLocation parmLoc,
                 ParsedType typeArg, Syntax syntaxUsed)
-      : AttrName(attrName), ScopeName(scopeName), ParmName(parmName),
-        AttrRange(attrRange), ScopeLoc(scopeLoc), ParmLoc(parmLoc),
-        EllipsisLoc(), NumArgs(1), SyntaxUsed(syntaxUsed), Invalid(false),
-        UsedAsTypeAttr(false), IsAvailability(false),
-        IsTypeTagForDatatype(false), IsProperty(false), NextInPosition(0),
-        NextInPool(0) {
+      : AttrName(attrName), ScopeName(scopeName), AttrRange(attrRange),
+        ScopeLoc(scopeLoc), EllipsisLoc(), NumArgs(0), SyntaxUsed(syntaxUsed),
+        Invalid(false), UsedAsTypeAttr(false), IsAvailability(false),
+        IsTypeTagForDatatype(false), IsProperty(false), HasParsedType(true),
+        NextInPosition(0), NextInPool(0) {
     new (&getTypeBuffer()) ParsedType(typeArg);
     AttrKind = getKind(getName(), getScopeName(), syntaxUsed);
   }
@@ -255,15 +280,13 @@ private:
   /// Constructor for microsoft __declspec(property) attribute.
   AttributeList(IdentifierInfo *attrName, SourceRange attrRange,
                 IdentifierInfo *scopeName, SourceLocation scopeLoc,
-                IdentifierInfo *parmName, SourceLocation parmLoc,
                 IdentifierInfo *getterId, IdentifierInfo *setterId,
                 Syntax syntaxUsed)
-    : AttrName(attrName), ScopeName(scopeName), ParmName(parmName),
-      AttrRange(attrRange), ScopeLoc(scopeLoc), ParmLoc(parmLoc),
-      SyntaxUsed(syntaxUsed),
+    : AttrName(attrName), ScopeName(scopeName), AttrRange(attrRange),
+      ScopeLoc(scopeLoc), EllipsisLoc(), NumArgs(0), SyntaxUsed(syntaxUsed),
       Invalid(false), UsedAsTypeAttr(false), IsAvailability(false),
-      IsTypeTagForDatatype(false), IsProperty(true), NextInPosition(0),
-      NextInPool(0) {
+      IsTypeTagForDatatype(false), IsProperty(true), HasParsedType(false),
+      NextInPosition(0), NextInPool(0) {
     new (&getPropertyDataBuffer()) PropertyData(getterId, setterId);
     AttrKind = getKind(getName(), getScopeName(), syntaxUsed);
   }
@@ -288,8 +311,7 @@ public:
   IdentifierInfo *getScopeName() const { return ScopeName; }
   SourceLocation getScopeLoc() const { return ScopeLoc; }
   
-  IdentifierInfo *getParameterName() const { return ParmName; }
-  SourceLocation getParameterLoc() const { return ParmLoc; }
+  bool hasParsedType() const { return HasParsedType; }
 
   /// Is this the Microsoft __declspec(property) attribute?
   bool isDeclspecPropertyAttribute() const  {
@@ -326,21 +348,31 @@ public:
   /// getNumArgs - Return the number of actual arguments to this attribute.
   unsigned getNumArgs() const { return NumArgs; }
 
-  /// hasParameterOrArguments - Return true if this attribute has a parameter,
-  /// or has a non empty argument expression list.
-  bool hasParameterOrArguments() const { return ParmName || NumArgs; }
-
   /// getArg - Return the specified argument.
-  Expr *getArg(unsigned Arg) const {
+  ArgsUnion getArg(unsigned Arg) const {
     assert(Arg < NumArgs && "Arg access out of range!");
     return getArgsBuffer()[Arg];
   }
 
+  bool isArgExpr(unsigned Arg) const {
+    return Arg < NumArgs && getArg(Arg).is<Expr*>();
+  }
+  Expr *getArgAsExpr(unsigned Arg) const {
+    return getArg(Arg).get<Expr*>();
+  }
+
+  bool isArgIdent(unsigned Arg) const {
+    return Arg < NumArgs && getArg(Arg).is<IdentifierLoc*>();
+  }
+  IdentifierLoc *getArgAsIdent(unsigned Arg) const {
+    return getArg(Arg).get<IdentifierLoc*>();
+  }
+
   class arg_iterator {
-    Expr * const *X;
+    ArgsUnion const *X;
     unsigned Idx;
   public:
-    arg_iterator(Expr * const *x, unsigned idx) : X(x), Idx(idx) {}
+    arg_iterator(ArgsUnion const *x, unsigned idx) : X(x), Idx(idx) {}
 
     arg_iterator& operator++() {
       ++Idx;
@@ -357,7 +389,7 @@ public:
       return !operator==(I);
     }
 
-    Expr* operator*() const {
+    ArgsUnion operator*() const {
       return X[Idx];
     }
 
@@ -418,7 +450,7 @@ public:
   }
 
   const ParsedType &getTypeArg() const {
-    assert(getKind() == AT_VecTypeHint && "Not a type attribute");
+    assert(HasParsedType && "Not a type attribute");
     return getTypeBuffer();
   }
 
@@ -431,6 +463,10 @@ public:
   /// defined in Attr.td. This index is used by an attribute
   /// to pretty print itself.
   unsigned getAttributeSpellingListIndex() const;
+
+  bool hasCustomParsing() const;
+  unsigned getMinArgs() const;
+  unsigned getMaxArgs() const;
 };
 
 /// A factory, from which one makes pools, from which one creates
@@ -445,11 +481,13 @@ public:
     /// which we want to ensure is a multiple of sizeof(void*).
     AvailabilityAllocSize =
       sizeof(AttributeList)
-      + ((3 * sizeof(AvailabilityChange) + sizeof(void*) - 1)
+      + ((3 * sizeof(AvailabilityChange) + sizeof(void*) +
+         sizeof(ArgsUnion) - 1)
          / sizeof(void*) * sizeof(void*)),
     TypeTagForDatatypeAllocSize =
       sizeof(AttributeList)
-      + (sizeof(AttributeList::TypeTagForDatatypeData) + sizeof(void *) - 1)
+      + (sizeof(AttributeList::TypeTagForDatatypeData) + sizeof(void *) +
+         sizeof(ArgsUnion) - 1)
         / sizeof(void*) * sizeof(void*),
     PropertyAllocSize =
       sizeof(AttributeList)
@@ -541,22 +579,20 @@ public:
 
   AttributeList *create(IdentifierInfo *attrName, SourceRange attrRange,
                         IdentifierInfo *scopeName, SourceLocation scopeLoc,
-                        IdentifierInfo *parmName, SourceLocation parmLoc,
-                        Expr **args, unsigned numArgs,
+                        ArgsUnion *args, unsigned numArgs,
                         AttributeList::Syntax syntax,
                         SourceLocation ellipsisLoc = SourceLocation()) {
     void *memory = allocate(sizeof(AttributeList)
-                            + numArgs * sizeof(Expr*));
+                            + numArgs * sizeof(ArgsUnion));
     return add(new (memory) AttributeList(attrName, attrRange,
                                           scopeName, scopeLoc,
-                                          parmName, parmLoc,
                                           args, numArgs, syntax,
                                           ellipsisLoc));
   }
 
   AttributeList *create(IdentifierInfo *attrName, SourceRange attrRange,
                         IdentifierInfo *scopeName, SourceLocation scopeLoc,
-                        IdentifierInfo *parmName, SourceLocation parmLoc,
+                        IdentifierLoc *Param,
                         const AvailabilityChange &introduced,
                         const AvailabilityChange &deprecated,
                         const AvailabilityChange &obsoleted,
@@ -566,9 +602,9 @@ public:
     void *memory = allocate(AttributeFactory::AvailabilityAllocSize);
     return add(new (memory) AttributeList(attrName, attrRange,
                                           scopeName, scopeLoc,
-                                          parmName, parmLoc,
-                                          introduced, deprecated, obsoleted,
-                                          unavailable, MessageExpr, syntax));
+                                          Param, introduced, deprecated,
+                                          obsoleted, unavailable, MessageExpr,
+                                          syntax));
   }
 
   AttributeList *createIntegerAttribute(ASTContext &C, IdentifierInfo *Name,
@@ -577,40 +613,35 @@ public:
   AttributeList *createTypeTagForDatatype(
                     IdentifierInfo *attrName, SourceRange attrRange,
                     IdentifierInfo *scopeName, SourceLocation scopeLoc,
-                    IdentifierInfo *argumentKindName,
-                    SourceLocation argumentKindLoc,
-                    ParsedType matchingCType, bool layoutCompatible,
-                    bool mustBeNull, AttributeList::Syntax syntax) {
+                    IdentifierLoc *argumentKind, ParsedType matchingCType,
+                    bool layoutCompatible, bool mustBeNull,
+                    AttributeList::Syntax syntax) {
     void *memory = allocate(AttributeFactory::TypeTagForDatatypeAllocSize);
     return add(new (memory) AttributeList(attrName, attrRange,
                                           scopeName, scopeLoc,
-                                          argumentKindName, argumentKindLoc,
-                                          matchingCType, layoutCompatible,
-                                          mustBeNull, syntax));
+                                          argumentKind, matchingCType,
+                                          layoutCompatible, mustBeNull,
+                                          syntax));
   }
 
   AttributeList *createTypeAttribute(
                     IdentifierInfo *attrName, SourceRange attrRange,
                     IdentifierInfo *scopeName, SourceLocation scopeLoc,
-                    IdentifierInfo *parmName, SourceLocation parmLoc,
                     ParsedType typeArg, AttributeList::Syntax syntaxUsed) {
     void *memory = allocate(sizeof(AttributeList) + sizeof(void *));
     return add(new (memory) AttributeList(attrName, attrRange,
                                           scopeName, scopeLoc,
-                                          parmName, parmLoc,
                                           typeArg, syntaxUsed));
   }
 
   AttributeList *createPropertyAttribute(
                     IdentifierInfo *attrName, SourceRange attrRange,
                     IdentifierInfo *scopeName, SourceLocation scopeLoc,
-                    IdentifierInfo *parmName, SourceLocation parmLoc,
                     IdentifierInfo *getterId, IdentifierInfo *setterId,
                     AttributeList::Syntax syntaxUsed) {
     void *memory = allocate(AttributeFactory::PropertyAllocSize);
     return add(new (memory) AttributeList(attrName, attrRange,
                                           scopeName, scopeLoc,
-                                          parmName, parmLoc,
                                           getterId, setterId,
                                           syntaxUsed));
   }
@@ -709,13 +740,12 @@ public:
   /// Add attribute with expression arguments.
   AttributeList *addNew(IdentifierInfo *attrName, SourceRange attrRange,
                         IdentifierInfo *scopeName, SourceLocation scopeLoc,
-                        IdentifierInfo *parmName, SourceLocation parmLoc,
-                        Expr **args, unsigned numArgs,
+                        ArgsUnion *args, unsigned numArgs,
                         AttributeList::Syntax syntax,
                         SourceLocation ellipsisLoc = SourceLocation()) {
     AttributeList *attr =
-      pool.create(attrName, attrRange, scopeName, scopeLoc, parmName, parmLoc,
-                  args, numArgs, syntax, ellipsisLoc);
+      pool.create(attrName, attrRange, scopeName, scopeLoc, args, numArgs,
+                  syntax, ellipsisLoc);
     add(attr);
     return attr;
   }
@@ -723,7 +753,7 @@ public:
   /// Add availability attribute.
   AttributeList *addNew(IdentifierInfo *attrName, SourceRange attrRange,
                         IdentifierInfo *scopeName, SourceLocation scopeLoc,
-                        IdentifierInfo *parmName, SourceLocation parmLoc,
+                        IdentifierLoc *Param,
                         const AvailabilityChange &introduced,
                         const AvailabilityChange &deprecated,
                         const AvailabilityChange &obsoleted,
@@ -731,9 +761,8 @@ public:
                         const Expr *MessageExpr,
                         AttributeList::Syntax syntax) {
     AttributeList *attr =
-      pool.create(attrName, attrRange, scopeName, scopeLoc, parmName, parmLoc,
-                  introduced, deprecated, obsoleted, unavailable,
-                  MessageExpr, syntax);
+      pool.create(attrName, attrRange, scopeName, scopeLoc, Param, introduced,
+                  deprecated, obsoleted, unavailable, MessageExpr, syntax);
     add(attr);
     return attr;
   }
@@ -742,16 +771,14 @@ public:
   AttributeList *addNewTypeTagForDatatype(
                         IdentifierInfo *attrName, SourceRange attrRange,
                         IdentifierInfo *scopeName, SourceLocation scopeLoc,
-                        IdentifierInfo *argumentKindName,
-                        SourceLocation argumentKindLoc,
-                        ParsedType matchingCType, bool layoutCompatible,
-                        bool mustBeNull, AttributeList::Syntax syntax) {
+                        IdentifierLoc *argumentKind, ParsedType matchingCType,
+                        bool layoutCompatible, bool mustBeNull,
+                        AttributeList::Syntax syntax) {
     AttributeList *attr =
       pool.createTypeTagForDatatype(attrName, attrRange,
                                     scopeName, scopeLoc,
-                                    argumentKindName, argumentKindLoc,
-                                    matchingCType, layoutCompatible,
-                                    mustBeNull, syntax);
+                                    argumentKind, matchingCType,
+                                    layoutCompatible, mustBeNull, syntax);
     add(attr);
     return attr;
   }
@@ -760,11 +787,10 @@ public:
   AttributeList *
   addNewTypeAttr(IdentifierInfo *attrName, SourceRange attrRange,
                  IdentifierInfo *scopeName, SourceLocation scopeLoc,
-                 IdentifierInfo *parmName, SourceLocation parmLoc,
                  ParsedType typeArg, AttributeList::Syntax syntaxUsed) {
     AttributeList *attr =
         pool.createTypeAttribute(attrName, attrRange, scopeName, scopeLoc,
-                                 parmName, parmLoc, typeArg, syntaxUsed);
+                                 typeArg, syntaxUsed);
     add(attr);
     return attr;
   }
@@ -773,13 +799,11 @@ public:
   AttributeList *
   addNewPropertyAttr(IdentifierInfo *attrName, SourceRange attrRange,
                  IdentifierInfo *scopeName, SourceLocation scopeLoc,
-                 IdentifierInfo *parmName, SourceLocation parmLoc,
                  IdentifierInfo *getterId, IdentifierInfo *setterId,
                  AttributeList::Syntax syntaxUsed) {
     AttributeList *attr =
         pool.createPropertyAttribute(attrName, attrRange, scopeName, scopeLoc,
-                                     parmName, parmLoc, getterId, setterId,
-                                     syntaxUsed);
+                                     getterId, setterId, syntaxUsed);
     add(attr);
     return attr;
   }
@@ -798,6 +822,15 @@ private:
   AttributeList *list;
 };
 
+/// These constants match the enumerated choices of
+/// err_attribute_argument_n_type and err_attribute_argument_type.
+enum AttributeArgumentNType {
+  AANT_ArgumentIntOrBool,
+  AANT_ArgumentIntegerConstant,
+  AANT_ArgumentString,
+  AANT_ArgumentIdentifier
+};
+
 }  // end namespace clang
 
 #endif
diff --git a/include/clang/Sema/CMakeLists.txt b/include/clang/Sema/CMakeLists.txt
index 6b5d222b5d56..5a48b901d2bf 100644
--- a/include/clang/Sema/CMakeLists.txt
+++ b/include/clang/Sema/CMakeLists.txt
@@ -17,3 +17,8 @@ clang_tablegen(AttrSpellingListIndex.inc -gen-clang-attr-spelling-index
   -I ${CMAKE_CURRENT_SOURCE_DIR}/../../
   SOURCE ../Basic/Attr.td
   TARGET ClangAttrSpellingListIndex)
+
+clang_tablegen(AttrParsedAttrImpl.inc -gen-clang-attr-parsed-attr-impl
+  -I ${CMAKE_CURRENT_SOURCE_DIR}/../../
+  SOURCE ../Basic/Attr.td
+  TARGET ClangAttrParsedAttrImpl)
diff --git a/include/clang/Sema/CodeCompleteConsumer.h b/include/clang/Sema/CodeCompleteConsumer.h
index a1ddec7520ad..64de82c6b05f 100644
--- a/include/clang/Sema/CodeCompleteConsumer.h
+++ b/include/clang/Sema/CodeCompleteConsumer.h
@@ -271,22 +271,17 @@ private:
   QualType BaseType;
 
   /// \brief The identifiers for Objective-C selector parts.
-  IdentifierInfo **SelIdents;
-
-  /// \brief The number of Objective-C selector parts.
-  unsigned NumSelIdents;
+  ArrayRef<IdentifierInfo *> SelIdents;
 
 public:
   /// \brief Construct a new code-completion context of the given kind.
-  CodeCompletionContext(enum Kind Kind) : Kind(Kind), SelIdents(NULL),
-                                          NumSelIdents(0) { }
+  CodeCompletionContext(enum Kind Kind) : Kind(Kind), SelIdents(None) { }
 
   /// \brief Construct a new code-completion context of the given kind.
   CodeCompletionContext(enum Kind Kind, QualType T,
-                        IdentifierInfo **SelIdents = NULL,
-                        unsigned NumSelIdents = 0) : Kind(Kind),
-                                                     SelIdents(SelIdents),
-                                                    NumSelIdents(NumSelIdents) {
+                        ArrayRef<IdentifierInfo *> SelIdents = None)
+                        : Kind(Kind),
+                          SelIdents(SelIdents) {
     if (Kind == CCC_DotMemberAccess || Kind == CCC_ArrowMemberAccess ||
         Kind == CCC_ObjCPropertyAccess || Kind == CCC_ObjCClassMessage ||
         Kind == CCC_ObjCInstanceMessage)
@@ -308,10 +303,7 @@ public:
   QualType getBaseType() const { return BaseType; }
 
   /// \brief Retrieve the Objective-C selector identifiers.
-  IdentifierInfo **getSelIdents() const { return SelIdents; }
-
-  /// \brief Retrieve the number of Objective-C selector identifiers.
-  unsigned getNumSelIdents() const { return NumSelIdents; }
+  ArrayRef<IdentifierInfo *> getSelIdents() const { return SelIdents; }
 
   /// \brief Determines whether we want C++ constructors as results within this
   /// context.
diff --git a/include/clang/Sema/DeclSpec.h b/include/clang/Sema/DeclSpec.h
index 059919a35bb0..8f6bd186a7dc 100644
--- a/include/clang/Sema/DeclSpec.h
+++ b/include/clang/Sema/DeclSpec.h
@@ -337,6 +337,7 @@ private:
 
   // function-specifier
   unsigned FS_inline_specified : 1;
+  unsigned FS_forceinline_specified: 1;
   unsigned FS_virtual_specified : 1;
   unsigned FS_explicit_specified : 1;
   unsigned FS_noreturn_specified : 1;
@@ -381,6 +382,7 @@ private:
   SourceRange TypeofParensRange;
   SourceLocation TQ_constLoc, TQ_restrictLoc, TQ_volatileLoc, TQ_atomicLoc;
   SourceLocation FS_inlineLoc, FS_virtualLoc, FS_explicitLoc, FS_noreturnLoc;
+  SourceLocation FS_forceinlineLoc;
   SourceLocation FriendLoc, ModulePrivateLoc, ConstexprLoc;
 
   WrittenBuiltinSpecs writtenBS;
@@ -419,6 +421,7 @@ public:
       TypeSpecOwned(false),
       TypeQualifiers(TQ_unspecified),
       FS_inline_specified(false),
+      FS_forceinline_specified(false),
       FS_virtual_specified(false),
       FS_explicit_specified(false),
       FS_noreturn_specified(false),
@@ -458,6 +461,12 @@ public:
     ThreadStorageClassSpecLoc  = SourceLocation();
   }
 
+  void ClearTypeSpecType() {
+    TypeSpecType = DeclSpec::TST_unspecified;
+    TypeSpecOwned = false;
+    TSTLoc = SourceLocation();
+  }
+
   // type-specifier
   TSW getTypeSpecWidth() const { return (TSW)TypeSpecWidth; }
   TSC getTypeSpecComplex() const { return (TSC)TypeSpecComplex; }
@@ -504,6 +513,8 @@ public:
     return TypeSpecType == TST_auto || TypeSpecType == TST_decltype_auto;
   }
 
+  bool hasTagDefinition() const;
+
   /// \brief Turn a type-specifier-type into a string like "_Bool" or "union".
   static const char *getSpecifierName(DeclSpec::TST T);
   static const char *getSpecifierName(DeclSpec::TQ Q);
@@ -532,8 +543,12 @@ public:
   }
 
   // function-specifier
-  bool isInlineSpecified() const { return FS_inline_specified; }
-  SourceLocation getInlineSpecLoc() const { return FS_inlineLoc; }
+  bool isInlineSpecified() const {
+    return FS_inline_specified | FS_forceinline_specified;
+  }
+  SourceLocation getInlineSpecLoc() const {
+    return FS_inline_specified ? FS_inlineLoc : FS_forceinlineLoc;
+  }
 
   bool isVirtualSpecified() const { return FS_virtual_specified; }
   SourceLocation getVirtualSpecLoc() const { return FS_virtualLoc; }
@@ -547,6 +562,8 @@ public:
   void ClearFunctionSpecs() {
     FS_inline_specified = false;
     FS_inlineLoc = SourceLocation();
+    FS_forceinline_specified = false;
+    FS_forceinlineLoc = SourceLocation();
     FS_virtual_specified = false;
     FS_virtualLoc = SourceLocation();
     FS_explicit_specified = false;
@@ -615,6 +632,8 @@ public:
                        const char *&PrevSpec, unsigned &DiagID);
   bool SetTypeAltiVecPixel(bool isAltiVecPixel, SourceLocation Loc,
                        const char *&PrevSpec, unsigned &DiagID);
+  bool SetTypeAltiVecBool(bool isAltiVecBool, SourceLocation Loc,
+                       const char *&PrevSpec, unsigned &DiagID);
   bool SetTypeSpecError();
   void UpdateDeclRep(Decl *Rep) {
     assert(isDeclRep((TST) TypeSpecType));
@@ -632,10 +651,16 @@ public:
   bool SetTypeQual(TQ T, SourceLocation Loc, const char *&PrevSpec,
                    unsigned &DiagID, const LangOptions &Lang);
 
-  bool setFunctionSpecInline(SourceLocation Loc);
-  bool setFunctionSpecVirtual(SourceLocation Loc);
-  bool setFunctionSpecExplicit(SourceLocation Loc);
-  bool setFunctionSpecNoreturn(SourceLocation Loc);
+  bool setFunctionSpecInline(SourceLocation Loc, const char *&PrevSpec,
+                             unsigned &DiagID);
+  bool setFunctionSpecForceInline(SourceLocation Loc, const char *&PrevSpec,
+                                  unsigned &DiagID);
+  bool setFunctionSpecVirtual(SourceLocation Loc, const char *&PrevSpec,
+                              unsigned &DiagID);
+  bool setFunctionSpecExplicit(SourceLocation Loc, const char *&PrevSpec,
+                               unsigned &DiagID);
+  bool setFunctionSpecNoreturn(SourceLocation Loc, const char *&PrevSpec,
+                               unsigned &DiagID);
 
   bool SetFriendSpec(SourceLocation Loc, const char *&PrevSpec,
                      unsigned &DiagID);
@@ -1500,6 +1525,7 @@ public:
     ObjCCatchContext,    // Objective-C catch exception-declaration
     BlockLiteralContext, // Block literal declarator.
     LambdaExprContext,   // Lambda-expression declarator.
+    LambdaExprParameterContext, // Lambda-expression parameter declarator.
     ConversionIdContext, // C++ conversion-type-id.
     TrailingReturnContext, // C++11 trailing-type-specifier.
     TemplateTypeArgContext, // Template type argument.
@@ -1575,7 +1601,6 @@ public:
   ~Declarator() {
     clear();
   }
-
   /// getDeclSpec - Return the declaration-specifier that this declarator was
   /// declared with.
   const DeclSpec &getDeclSpec() const { return DS; }
@@ -1604,7 +1629,8 @@ public:
   bool isPrototypeContext() const {
     return (Context == PrototypeContext ||
             Context == ObjCParameterContext ||
-            Context == ObjCResultContext);
+            Context == ObjCResultContext ||
+            Context == LambdaExprParameterContext);
   }
 
   /// \brief Get the source range that spans this declarator.
@@ -1668,6 +1694,7 @@ public:
     case AliasDeclContext:
     case AliasTemplateContext:
     case PrototypeContext:
+    case LambdaExprParameterContext:
     case ObjCParameterContext:
     case ObjCResultContext:
     case TemplateParamContext:
@@ -1696,6 +1723,7 @@ public:
     case ForContext:
     case ConditionContext:
     case PrototypeContext:
+    case LambdaExprParameterContext:
     case TemplateParamContext:
     case CXXCatchContext:
     case ObjCCatchContext:
@@ -1717,6 +1745,39 @@ public:
     llvm_unreachable("unknown context kind!");
   }
 
+  /// diagnoseIdentifier - Return true if the identifier is prohibited and
+  /// should be diagnosed (because it cannot be anything else).
+  bool diagnoseIdentifier() const {
+    switch (Context) {
+    case FileContext:
+    case KNRTypeListContext:
+    case MemberContext:
+    case BlockContext:
+    case ForContext:
+    case ConditionContext:
+    case PrototypeContext:
+    case LambdaExprParameterContext:
+    case TemplateParamContext:
+    case CXXCatchContext:
+    case ObjCCatchContext:
+    case TypeNameContext:
+    case ConversionIdContext:
+    case ObjCParameterContext:
+    case ObjCResultContext:
+    case BlockLiteralContext:
+    case CXXNewContext:
+    case LambdaExprContext:
+      return false;
+
+    case AliasDeclContext:
+    case AliasTemplateContext:
+    case TemplateTypeArgContext:
+    case TrailingReturnContext:
+      return true;
+    }
+    llvm_unreachable("unknown context kind!");
+  }
+
   /// mayBeFollowedByCXXDirectInit - Return true if the declarator can be
   /// followed by a C++ direct initializer, e.g. "int x(1);".
   bool mayBeFollowedByCXXDirectInit() const {
@@ -1748,6 +1809,7 @@ public:
     case KNRTypeListContext:
     case MemberContext:
     case PrototypeContext:
+    case LambdaExprParameterContext:
     case ObjCParameterContext:
     case ObjCResultContext:
     case TemplateParamContext:
@@ -1934,6 +1996,7 @@ public:
     case AliasDeclContext:
     case AliasTemplateContext:
     case PrototypeContext:
+    case LambdaExprParameterContext:
     case ObjCParameterContext:
     case ObjCResultContext:
     case TemplateParamContext:
@@ -1995,7 +2058,7 @@ public:
 
   /// \brief Return a source range list of C++11 attributes associated
   /// with the declarator.
-  void getCXX11AttributeRanges(SmallVector<SourceRange, 4> &Ranges) {
+  void getCXX11AttributeRanges(SmallVectorImpl<SourceRange> &Ranges) {
     AttributeList *AttrList = Attrs.getList();
     while (AttrList) {
       if (AttrList->isCXX11Attribute())
@@ -2038,6 +2101,16 @@ public:
     return (FunctionDefinitionKind)FunctionDefinition; 
   }
 
+  /// Returns true if this declares a real member and not a friend.
+  bool isFirstDeclarationOfMember() {
+    return getContext() == MemberContext && !getDeclSpec().isFriendSpecified();
+  }
+
+  /// Returns true if this declares a static member.  This cannot be called on a
+  /// declarator outside of a MemberContext because we won't know until
+  /// redeclaration time if the decl is static.
+  bool isStaticMember();
+
   void setRedeclaration(bool Val) { Redeclaration = Val; }
   bool isRedeclaration() const { return Redeclaration; }
 };
@@ -2057,7 +2130,8 @@ public:
   enum Specifier {
     VS_None = 0,
     VS_Override = 1,
-    VS_Final = 2
+    VS_Final = 2,
+    VS_Sealed = 4
   };
 
   VirtSpecifiers() : Specifiers(0) { }
@@ -2068,7 +2142,8 @@ public:
   bool isOverrideSpecified() const { return Specifiers & VS_Override; }
   SourceLocation getOverrideLoc() const { return VS_overrideLoc; }
 
-  bool isFinalSpecified() const { return Specifiers & VS_Final; }
+  bool isFinalSpecified() const { return Specifiers & (VS_Final | VS_Sealed); }
+  bool isFinalSpelledSealed() const { return Specifiers & VS_Sealed; }
   SourceLocation getFinalLoc() const { return VS_finalLoc; }
 
   void clear() { Specifiers = 0; }
@@ -2088,13 +2163,16 @@ private:
 struct LambdaCapture {
   LambdaCaptureKind Kind;
   SourceLocation Loc;
-  IdentifierInfo* Id;
+  IdentifierInfo *Id;
   SourceLocation EllipsisLoc;
-  
+  ExprResult Init;
+  ParsedType InitCaptureType;
   LambdaCapture(LambdaCaptureKind Kind, SourceLocation Loc,
-                IdentifierInfo* Id = 0,
-                SourceLocation EllipsisLoc = SourceLocation())
-    : Kind(Kind), Loc(Loc), Id(Id), EllipsisLoc(EllipsisLoc)
+                IdentifierInfo* Id,
+                SourceLocation EllipsisLoc,
+                ExprResult Init, ParsedType InitCaptureType)
+    : Kind(Kind), Loc(Loc), Id(Id), EllipsisLoc(EllipsisLoc), Init(Init),
+        InitCaptureType(InitCaptureType)
   {}
 };
 
@@ -2111,11 +2189,13 @@ struct LambdaIntroducer {
   /// \brief Append a capture in a lambda introducer.
   void addCapture(LambdaCaptureKind Kind,
                   SourceLocation Loc,
-                  IdentifierInfo* Id = 0, 
-                  SourceLocation EllipsisLoc = SourceLocation()) {
-    Captures.push_back(LambdaCapture(Kind, Loc, Id, EllipsisLoc));
+                  IdentifierInfo* Id,
+                  SourceLocation EllipsisLoc,
+                  ExprResult Init, 
+                  ParsedType InitCaptureType) {
+    Captures.push_back(LambdaCapture(Kind, Loc, Id, EllipsisLoc, Init, 
+        InitCaptureType));
   }
-
 };
 
 } // end namespace clang
diff --git a/include/clang/Sema/DelayedDiagnostic.h b/include/clang/Sema/DelayedDiagnostic.h
index 3704e095c74f..4f4a87fe11f2 100644
--- a/include/clang/Sema/DelayedDiagnostic.h
+++ b/include/clang/Sema/DelayedDiagnostic.h
@@ -6,16 +6,17 @@
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
-//
-// This file defines the DelayedDiagnostic class, which is used to
-// record diagnostics that are being conditionally produced during
-// declarator parsing.  Certain kinds of diagnostics --- notably
-// deprecation and access control --- are suppressed based on
-// semantic properties of the parsed declaration that aren't known
-// until it is fully parsed.
-//
-// This file also defines AccessedEntity.
-//
+///
+/// \file
+/// \brief Defines the classes clang::DelayedDiagnostic and 
+/// clang::AccessedEntity.
+///
+/// DelayedDiangostic is used to record diagnostics that are being
+/// conditionally produced during declarator parsing.  Certain kinds of
+/// diagnostics -- notably deprecation and access control -- are suppressed
+/// based on semantic properties of the parsed declaration that aren't known
+/// until it is fully parsed.
+///
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_CLANG_SEMA_DELAYED_DIAGNOSTIC_H
@@ -224,8 +225,7 @@ private:
   };
 };
 
-/// DelayedDiagnosticPool - A collection of diagnostics which were
-/// delayed.
+/// \brief A collection of diagnostics which were delayed.
 class DelayedDiagnosticPool {
   const DelayedDiagnosticPool *Parent;
   SmallVector<DelayedDiagnostic, 4> Diagnostics;
diff --git a/include/clang/Sema/ExternalSemaSource.h b/include/clang/Sema/ExternalSemaSource.h
index cbce757ea7d0..325abdf8e517 100644
--- a/include/clang/Sema/ExternalSemaSource.h
+++ b/include/clang/Sema/ExternalSemaSource.h
@@ -14,6 +14,8 @@
 #define LLVM_CLANG_SEMA_EXTERNAL_SEMA_SOURCE_H
 
 #include "clang/AST/ExternalASTSource.h"
+#include "clang/AST/Type.h"
+#include "clang/Sema/TypoCorrection.h"
 #include "clang/Sema/Weak.h"
 #include "llvm/ADT/MapVector.h"
 #include <utility>
@@ -30,7 +32,8 @@ class Sema;
 class TypedefNameDecl;
 class ValueDecl;
 class VarDecl;
-  
+struct LateParsedTemplate;
+
 /// \brief A simple structure that captures a vtable use for the purposes of
 /// the \c ExternalSemaSource.
 struct ExternalVTableUse {
@@ -177,6 +180,45 @@ public:
                  SmallVectorImpl<std::pair<ValueDecl *, 
                                            SourceLocation> > &Pending) {}
 
+  /// \brief Read the set of late parsed template functions for this source.
+  ///
+  /// The external source should insert its own late parsed template functions
+  /// into the map. Note that this routine may be invoked multiple times; the
+  /// external source should take care not to introduce the same map entries
+  /// repeatedly.
+  virtual void ReadLateParsedTemplates(
+      llvm::DenseMap<const FunctionDecl *, LateParsedTemplate *> &LPTMap) {}
+
+  /// \copydoc Sema::CorrectTypo
+  /// \note LookupKind must correspond to a valid Sema::LookupNameKind
+  ///
+  /// ExternalSemaSource::CorrectTypo is always given the first chance to
+  /// correct a typo (really, to offer suggestions to repair a failed lookup).
+  /// It will even be called when SpellChecking is turned off or after a
+  /// fatal error has already been detected.
+  virtual TypoCorrection CorrectTypo(const DeclarationNameInfo &Typo,
+                                     int LookupKind, Scope *S, CXXScopeSpec *SS,
+                                     CorrectionCandidateCallback &CCC,
+                                     DeclContext *MemberContext,
+                                     bool EnteringContext,
+                                     const ObjCObjectPointerType *OPT) {
+    return TypoCorrection();
+  }
+
+  /// \brief Produces a diagnostic note if the external source contains a
+  /// complete definition for \p T.
+  ///
+  /// \param Loc the location at which a complete type was required but not
+  /// provided
+  ///
+  /// \param T the \c QualType that should have been complete at \p Loc
+  ///
+  /// \return true if a diagnostic was produced, false otherwise.
+  virtual bool MaybeDiagnoseMissingCompleteType(SourceLocation Loc,
+                                                QualType T) {
+    return false;
+  }
+
   // isa/cast/dyn_cast support
   static bool classof(const ExternalASTSource *Source) {
     return Source->SemaSource;
diff --git a/include/clang/Sema/IdentifierResolver.h b/include/clang/Sema/IdentifierResolver.h
index 0b1b74a0d8cc..99d94a1fed85 100644
--- a/include/clang/Sema/IdentifierResolver.h
+++ b/include/clang/Sema/IdentifierResolver.h
@@ -51,11 +51,6 @@ class IdentifierResolver {
     /// The decl must already be part of the decl chain.
     void RemoveDecl(NamedDecl *D);
 
-    /// Replaces the Old declaration with the New declaration. If the
-    /// replacement is successful, returns true. If the old
-    /// declaration was not found, returns false.
-    bool ReplaceDecl(NamedDecl *Old, NamedDecl *New);
-
     /// \brief Insert the given declaration at the given position in the list.
     void InsertDecl(DeclsTy::iterator Pos, NamedDecl *D) {
       Decls.insert(Pos, D);
@@ -168,11 +163,6 @@ public:
   /// The decl must already be part of the decl chain.
   void RemoveDecl(NamedDecl *D);
 
-  /// Replace the decl Old with the new declaration New on its
-  /// identifier chain. Returns true if the old declaration was found
-  /// (and, therefore, replaced).
-  bool ReplaceDecl(NamedDecl *Old, NamedDecl *New);
-
   /// \brief Insert the given declaration after the given iterator
   /// position.
   void InsertDeclAfter(iterator Pos, NamedDecl *D);
diff --git a/include/clang/Sema/Initialization.h b/include/clang/Sema/Initialization.h
index 58781ac628c4..83fb2be5f15f 100644
--- a/include/clang/Sema/Initialization.h
+++ b/include/clang/Sema/Initialization.h
@@ -35,6 +35,7 @@ class ParmVarDecl;
 class Sema;
 class TypeLoc;
 class VarDecl;
+class ObjCMethodDecl;
   
 /// \brief Describes an entity that is being initialized.
 class InitializedEntity {
@@ -78,7 +79,17 @@ public:
     EK_LambdaCapture,
     /// \brief The entity being initialized is the initializer for a compound
     /// literal.
-    EK_CompoundLiteralInit
+    EK_CompoundLiteralInit,
+    /// \brief The entity being implicitly initialized back to the formal
+    /// result type.
+    EK_RelatedResult,
+    /// \brief The entity being initialized is a function parameter; function
+    /// is member of group of audited CF APIs.
+    EK_Parameter_CF_Audited
+
+    // Note: err_init_conversion_failed in DiagnosticSemaKinds.td uses this
+    // enum as an index for its first %select.  When modifying this list,
+    // that diagnostic text needs to be updated as well.
   };
   
 private:
@@ -105,8 +116,8 @@ private:
   };
 
   struct C {
-    /// \brief The variable being captured by an EK_LambdaCapture.
-    VarDecl *Var;
+    /// \brief The name of the variable being captured by an EK_LambdaCapture.
+    IdentifierInfo *VarID;
 
     /// \brief The source location at which the capture occurs.
     unsigned Location;
@@ -116,6 +127,10 @@ private:
     /// \brief When Kind == EK_Variable, or EK_Member, the VarDecl or
     /// FieldDecl, respectively.
     DeclaratorDecl *VariableOrMember;
+    
+    /// \brief When Kind == EK_RelatedResult, the ObjectiveC method where
+    /// result type was implicitly changed to accommodate ARC semantics.
+    ObjCMethodDecl *MethodDecl;
 
     /// \brief When Kind == EK_Parameter, the ParmVarDecl, with the
     /// low bit indicating whether the parameter is "consumed".
@@ -168,10 +183,10 @@ private:
                     const InitializedEntity &Parent);
 
   /// \brief Create the initialization entity for a lambda capture.
-  InitializedEntity(VarDecl *Var, FieldDecl *Field, SourceLocation Loc)
-    : Kind(EK_LambdaCapture), Parent(0), Type(Field->getType()) 
+  InitializedEntity(IdentifierInfo *VarID, QualType FieldType, SourceLocation Loc)
+    : Kind(EK_LambdaCapture), Parent(0), Type(FieldType) 
   {
-    Capture.Var = Var;
+    Capture.VarID = VarID;
     Capture.Location = Loc.getRawEncoding();
   }
   
@@ -254,10 +269,19 @@ public:
     Result.TypeInfo = TypeInfo;
     return Result;
   }
+  
+  /// \brief Create the initialization entity for a related result.
+  static InitializedEntity InitializeRelatedResult(ObjCMethodDecl *MD,
+                                                   QualType Type) {
+    InitializedEntity Result(EK_RelatedResult, SourceLocation(), Type);
+    Result.MethodDecl = MD;
+    return Result;
+  }
+
 
   /// \brief Create the initialization entity for a base class subobject.
   static InitializedEntity InitializeBase(ASTContext &Context,
-                                          CXXBaseSpecifier *Base,
+                                          const CXXBaseSpecifier *Base,
                                           bool IsInheritedVirtualBase);
 
   /// \brief Create the initialization entity for a delegated constructor.
@@ -285,10 +309,10 @@ public:
   }
 
   /// \brief Create the initialization entity for a lambda capture.
-  static InitializedEntity InitializeLambdaCapture(VarDecl *Var,
-                                                   FieldDecl *Field,
+  static InitializedEntity InitializeLambdaCapture(IdentifierInfo *VarID,
+                                                   QualType FieldType,
                                                    SourceLocation Loc) {
-    return InitializedEntity(Var, Field, Loc);
+    return InitializedEntity(VarID, FieldType, Loc);
   }
 
   /// \brief Create the entity for a compound literal initializer.
@@ -326,22 +350,29 @@ public:
   /// \brief Retrieve the variable, parameter, or field being
   /// initialized.
   DeclaratorDecl *getDecl() const;
+  
+  /// \brief Retrieve the ObjectiveC method being initialized.
+  ObjCMethodDecl *getMethodDecl() const { return MethodDecl; }
 
   /// \brief Determine whether this initialization allows the named return 
   /// value optimization, which also applies to thrown objects.
   bool allowsNRVO() const;
 
+  bool isParameterKind() const {
+    return (getKind() == EK_Parameter  ||
+            getKind() == EK_Parameter_CF_Audited);
+  }
   /// \brief Determine whether this initialization consumes the
   /// parameter.
   bool isParameterConsumed() const {
-    assert(getKind() == EK_Parameter && "Not a parameter");
+    assert(isParameterKind() && "Not a parameter");
     return (Parameter & 1);
   }
                                   
   /// \brief Retrieve the base specifier.
-  CXXBaseSpecifier *getBaseSpecifier() const {
+  const CXXBaseSpecifier *getBaseSpecifier() const {
     assert(getKind() == EK_Base && "Not a base specifier");
-    return reinterpret_cast<CXXBaseSpecifier *>(Base & ~0x1);
+    return reinterpret_cast<const CXXBaseSpecifier *>(Base & ~0x1);
   }
 
   /// \brief Return whether the base is an inherited virtual base.
@@ -371,19 +402,28 @@ public:
            getKind() == EK_ComplexElement);
     this->Index = Index;
   }
-
-  /// \brief Retrieve the variable for a captured variable in a lambda.
-  VarDecl *getCapturedVar() const {
+  /// \brief For a lambda capture, return the capture's name.
+  StringRef getCapturedVarName() const {
     assert(getKind() == EK_LambdaCapture && "Not a lambda capture!");
-    return Capture.Var;
+    return Capture.VarID->getName();
   }
-  
   /// \brief Determine the location of the capture when initializing
   /// field from a captured variable in a lambda.
   SourceLocation getCaptureLoc() const {
     assert(getKind() == EK_LambdaCapture && "Not a lambda capture!");
     return SourceLocation::getFromRawEncoding(Capture.Location);
   }
+  
+  void setParameterCFAudited() {
+    Kind = EK_Parameter_CF_Audited;
+  }
+
+  /// Dump a representation of the initialized entity to standard error,
+  /// for debugging purposes.
+  void dump() const;
+
+private:
+  unsigned dumpImpl(raw_ostream &OS) const;
 };
   
 /// \brief Describes the kind of initialization being performed, along with 
@@ -544,8 +584,10 @@ public:
   bool AllowExplicit() const { return !isCopyInit(); }
 
   /// \brief Retrieve whether this initialization allows the use of explicit
-  /// conversion functions.
-  bool allowExplicitConversionFunctions() const {
+  /// conversion functions when binding a reference. If the reference is the
+  /// first parameter in a copy or move constructor, such conversions are
+  /// permitted even though we are performing copy-initialization.
+  bool allowExplicitConversionFunctionsInRefBinding() const {
     return !isCopyInit() || Context == IC_ExplicitConvs;
   }
   
@@ -610,6 +652,8 @@ public:
     SK_LValueToRValue,
     /// \brief Perform an implicit conversion sequence.
     SK_ConversionSequence,
+    /// \brief Perform an implicit conversion sequence without narrowing.
+    SK_ConversionSequenceNoNarrowing,
     /// \brief Perform list-initialization without a constructor
     SK_ListInitialization,
     /// \brief Perform list-initialization with a constructor.
@@ -706,6 +750,16 @@ public:
     /// \brief Array must be initialized with an initializer list or a 
     /// string literal.
     FK_ArrayNeedsInitListOrStringLiteral,
+    /// \brief Array must be initialized with an initializer list or a
+    /// wide string literal.
+    FK_ArrayNeedsInitListOrWideStringLiteral,
+    /// \brief Initializing a wide char array with narrow string literal.
+    FK_NarrowStringIntoWideCharArray,
+    /// \brief Initializing char array with wide string literal.
+    FK_WideStringIntoCharArray,
+    /// \brief Initializing wide char array with incompatible wide string
+    /// literal.
+    FK_IncompatWideStringIntoWideChar,
     /// \brief Array type mismatch.
     FK_ArrayTypeMismatch,
     /// \brief Non-constant array initializer
@@ -753,9 +807,6 @@ public:
     /// \brief Initializer has a placeholder type which cannot be
     /// resolved by initialization.
     FK_PlaceholderType,
-    /// \brief Failed to initialize a std::initializer_list because copy
-    /// construction of some element failed.
-    FK_InitListElementCopyFailure,
     /// \brief List-copy-initialization chose an explicit constructor.
     FK_ExplicitConstructor
   };
@@ -791,11 +842,19 @@ public:
   /// \param Kind the kind of initialization being performed.
   ///
   /// \param Args the argument(s) provided for initialization.
+  ///
+  /// \param InInitList true if we are initializing from an expression within
+  ///        an initializer list. This disallows narrowing conversions in C++11
+  ///        onwards.
   InitializationSequence(Sema &S, 
                          const InitializedEntity &Entity,
                          const InitializationKind &Kind,
-                         MultiExprArg Args);
-  
+                         MultiExprArg Args,
+                         bool InInitList = false);
+  void InitializeFrom(Sema &S, const InitializedEntity &Entity,
+                      const InitializationKind &Kind, MultiExprArg Args,
+                      bool InInitList);
+
   ~InitializationSequence();
   
   /// \brief Perform the actual initialization of the given entity based on
@@ -841,12 +900,12 @@ public:
   void setSequenceKind(enum SequenceKind SK) { SequenceKind = SK; }
   
   /// \brief Determine whether the initialization sequence is valid.
-  operator bool() const { return !Failed(); }
+  LLVM_EXPLICIT operator bool() const { return !Failed(); }
 
   /// \brief Determine whether the initialization sequence is invalid.
   bool Failed() const { return SequenceKind == FailedSequence; }
-  
-  typedef SmallVector<Step, 4>::const_iterator step_iterator;
+
+  typedef SmallVectorImpl<Step>::const_iterator step_iterator;
   step_iterator step_begin() const { return Steps.begin(); }
   step_iterator step_end()   const { return Steps.end(); }
 
@@ -930,7 +989,7 @@ public:
 
   /// \brief Add a new step that applies an implicit conversion sequence.
   void AddConversionSequenceStep(const ImplicitConversionSequence &ICS,
-                                 QualType T);
+                                 QualType T, bool TopLevelOfInitList = false);
 
   /// \brief Add a list-initialization step.
   void AddListInitializationStep(QualType T);
diff --git a/include/clang/Sema/Lookup.h b/include/clang/Sema/Lookup.h
index 3e7e3a16ebc8..105c8791e222 100644
--- a/include/clang/Sema/Lookup.h
+++ b/include/clang/Sema/Lookup.h
@@ -139,7 +139,8 @@ public:
       Redecl(Redecl != Sema::NotForRedeclaration),
       HideTags(true),
       Diagnose(Redecl == Sema::NotForRedeclaration),
-      AllowHidden(Redecl == Sema::ForRedeclaration)
+      AllowHidden(Redecl == Sema::ForRedeclaration),
+      Shadowed(false)
   {
     configure();
   }
@@ -160,7 +161,8 @@ public:
       Redecl(Redecl != Sema::NotForRedeclaration),
       HideTags(true),
       Diagnose(Redecl == Sema::NotForRedeclaration),
-      AllowHidden(Redecl == Sema::ForRedeclaration)
+      AllowHidden(Redecl == Sema::ForRedeclaration),
+      Shadowed(false)
   {
     configure();
   }
@@ -179,7 +181,8 @@ public:
       Redecl(Other.Redecl),
       HideTags(Other.HideTags),
       Diagnose(false),
-      AllowHidden(Other.AllowHidden)
+      AllowHidden(Other.AllowHidden),
+      Shadowed(false)
   {}
 
   ~LookupResult() {
@@ -283,33 +286,36 @@ public:
 
   /// \brief Determine whether the given declaration is visible to the
   /// program.
-  static bool isVisible(NamedDecl *D) {
+  static bool isVisible(Sema &SemaRef, NamedDecl *D) {
     // If this declaration is not hidden, it's visible.
     if (!D->isHidden())
       return true;
-    
-    // FIXME: We should be allowed to refer to a module-private name from 
-    // within the same module, e.g., during template instantiation.
-    // This requires us know which module a particular declaration came from.
-    return false;
+
+    if (SemaRef.ActiveTemplateInstantiations.empty())
+      return false;
+
+    // During template instantiation, we can refer to hidden declarations, if
+    // they were visible in any module along the path of instantiation.
+    return isVisibleSlow(SemaRef, D);
   }
-  
+
   /// \brief Retrieve the accepted (re)declaration of the given declaration,
   /// if there is one.
   NamedDecl *getAcceptableDecl(NamedDecl *D) const {
     if (!D->isInIdentifierNamespace(IDNS))
       return 0;
-    
-    if (isHiddenDeclarationVisible() || isVisible(D))
+
+    if (isHiddenDeclarationVisible() || isVisible(SemaRef, D))
       return D;
-    
+
     return getAcceptableDeclSlow(D);
   }
-  
+
 private:
+  static bool isVisibleSlow(Sema &SemaRef, NamedDecl *D);
   NamedDecl *getAcceptableDeclSlow(NamedDecl *D) const;
+
 public:
-  
   /// \brief Returns the identifier namespace mask for this lookup.
   unsigned getIdentifierNamespace() const {
     return IDNS;
@@ -390,7 +396,15 @@ public:
     assert(ResultKind == NotFound && Decls.empty());
     ResultKind = NotFoundInCurrentInstantiation;
   }
-  
+
+  /// \brief Determine whether the lookup result was shadowed by some other
+  /// declaration that lookup ignored.
+  bool isShadowed() const { return Shadowed; }
+
+  /// \brief Note that we found and ignored a declaration while performing
+  /// lookup.
+  void setShadowed() { Shadowed = true; }
+
   /// \brief Resolves the result kind of the lookup, possibly hiding
   /// decls.
   ///
@@ -479,6 +493,7 @@ public:
     if (Paths) deletePaths(Paths);
     Paths = NULL;
     NamingClass = 0;
+    Shadowed = false;
   }
 
   /// \brief Clears out any current state and re-initializes for a
@@ -598,6 +613,13 @@ public:
     return Filter(*this);
   }
 
+  void setFindLocalExtern(bool FindLocalExtern) {
+    if (FindLocalExtern)
+      IDNS |= Decl::IDNS_LocalExtern;
+    else
+      IDNS &= ~Decl::IDNS_LocalExtern;
+  }
+
 private:
   void diagnose() {
     if (isAmbiguous())
@@ -657,34 +679,44 @@ private:
 
   /// \brief True if we should allow hidden declarations to be 'visible'.
   bool AllowHidden;
+
+  /// \brief True if the found declarations were shadowed by some other
+  /// declaration that we skipped. This only happens when \c LookupKind
+  /// is \c LookupRedeclarationWithLinkage.
+  bool Shadowed;
 };
 
-  /// \brief Consumes visible declarations found when searching for
-  /// all visible names within a given scope or context.
+/// \brief Consumes visible declarations found when searching for
+/// all visible names within a given scope or context.
+///
+/// This abstract class is meant to be subclassed by clients of \c
+/// Sema::LookupVisibleDecls(), each of which should override the \c
+/// FoundDecl() function to process declarations as they are found.
+class VisibleDeclConsumer {
+public:
+  /// \brief Destroys the visible declaration consumer.
+  virtual ~VisibleDeclConsumer();
+
+  /// \brief Determine whether hidden declarations (from unimported
+  /// modules) should be given to this consumer. By default, they
+  /// are not included.
+  virtual bool includeHiddenDecls() const;
+
+  /// \brief Invoked each time \p Sema::LookupVisibleDecls() finds a
+  /// declaration visible from the current scope or context.
   ///
-  /// This abstract class is meant to be subclassed by clients of \c
-  /// Sema::LookupVisibleDecls(), each of which should override the \c
-  /// FoundDecl() function to process declarations as they are found.
-  class VisibleDeclConsumer {
-  public:
-    /// \brief Destroys the visible declaration consumer.
-    virtual ~VisibleDeclConsumer();
-
-    /// \brief Invoked each time \p Sema::LookupVisibleDecls() finds a
-    /// declaration visible from the current scope or context.
-    ///
-    /// \param ND the declaration found.
-    ///
-    /// \param Hiding a declaration that hides the declaration \p ND,
-    /// or NULL if no such declaration exists.
-    ///
-    /// \param Ctx the original context from which the lookup started.
-    ///
-    /// \param InBaseClass whether this declaration was found in base
-    /// class of the context we searched.
-    virtual void FoundDecl(NamedDecl *ND, NamedDecl *Hiding, DeclContext *Ctx,
-                           bool InBaseClass) = 0;
-  };
+  /// \param ND the declaration found.
+  ///
+  /// \param Hiding a declaration that hides the declaration \p ND,
+  /// or NULL if no such declaration exists.
+  ///
+  /// \param Ctx the original context from which the lookup started.
+  ///
+  /// \param InBaseClass whether this declaration was found in base
+  /// class of the context we searched.
+  virtual void FoundDecl(NamedDecl *ND, NamedDecl *Hiding, DeclContext *Ctx,
+                         bool InBaseClass) = 0;
+};
 
 /// \brief A class for storing results from argument-dependent lookup.
 class ADLResult {
@@ -701,7 +733,8 @@ public:
     Decls.erase(cast<NamedDecl>(D->getCanonicalDecl()));
   }
 
-  class iterator {
+  class iterator
+      : public std::iterator<std::forward_iterator_tag, NamedDecl *> {
     typedef llvm::DenseMap<NamedDecl*,NamedDecl*>::iterator inner_iterator;
     inner_iterator iter;
 
@@ -713,7 +746,7 @@ public:
     iterator &operator++() { ++iter; return *this; }
     iterator operator++(int) { return iterator(iter++); }
 
-    NamedDecl *operator*() const { return iter->second; }
+    value_type operator*() const { return iter->second; }
 
     bool operator==(const iterator &other) const { return iter == other.iter; }
     bool operator!=(const iterator &other) const { return iter != other.iter; }
diff --git a/include/clang/Sema/Makefile b/include/clang/Sema/Makefile
index 7d658a7c11ef..799f789e0ead 100644
--- a/include/clang/Sema/Makefile
+++ b/include/clang/Sema/Makefile
@@ -1,7 +1,7 @@
 CLANG_LEVEL := ../../..
 TD_SRC_DIR = $(PROJ_SRC_DIR)/../Basic
 BUILT_SOURCES = AttrTemplateInstantiate.inc AttrParsedAttrList.inc AttrParsedAttrKinds.inc \
-        AttrSpellingListIndex.inc
+        AttrSpellingListIndex.inc AttrParsedAttrImpl.inc
 
 TABLEGEN_INC_FILES_COMMON = 1
 
@@ -31,4 +31,9 @@ $(ObjDir)/AttrSpellingListIndex.inc.tmp : $(TD_SRC_DIR)/Attr.td \
 	$(Verb) $(ClangTableGen) -gen-clang-attr-spelling-index -o \
 	  $(call SYSPATH, $@) -I $(PROJ_SRC_DIR)/../../ $<
 
+$(ObjDir)/AttrParsedAttrImpl.inc.tmp : $(TD_SRC_DIR)/Attr.td \
+                                       $(CLANG_TBLGEN) $(ObjDir)/.dir
+	$(Echo) "Building Clang parsed attribute list impl with tablegen"
+	$(Verb) $(ClangTableGen) -gen-clang-attr-parsed-attr-impl -o \
+	  $(call SYSPATH, $@) -I $(PROJ_SRC_DIR)/../../ $<
 
diff --git a/include/clang/Sema/MultiplexExternalSemaSource.h b/include/clang/Sema/MultiplexExternalSemaSource.h
index ff87d05c0404..e9ba479d1255 100644
--- a/include/clang/Sema/MultiplexExternalSemaSource.h
+++ b/include/clang/Sema/MultiplexExternalSemaSource.h
@@ -322,6 +322,36 @@ public:
   virtual void ReadPendingInstantiations(
               SmallVectorImpl<std::pair<ValueDecl*, SourceLocation> >& Pending);
 
+  /// \brief Read the set of late parsed template functions for this source.
+  ///
+  /// The external source should insert its own late parsed template functions
+  /// into the map. Note that this routine may be invoked multiple times; the
+  /// external source should take care not to introduce the same map entries
+  /// repeatedly.
+  virtual void ReadLateParsedTemplates(
+      llvm::DenseMap<const FunctionDecl *, LateParsedTemplate *> &LPTMap);
+
+  /// \copydoc ExternalSemaSource::CorrectTypo
+  /// \note Returns the first nonempty correction.
+  virtual TypoCorrection CorrectTypo(const DeclarationNameInfo &Typo,
+                                     int LookupKind, Scope *S, CXXScopeSpec *SS,
+                                     CorrectionCandidateCallback &CCC,
+                                     DeclContext *MemberContext,
+                                     bool EnteringContext,
+                                     const ObjCObjectPointerType *OPT);
+
+  /// \brief Produces a diagnostic note if one of the attached sources
+  /// contains a complete definition for \p T. Queries the sources in list
+  /// order until the first one claims that a diagnostic was produced.
+  ///
+  /// \param Loc the location at which a complete type was required but not
+  /// provided
+  ///
+  /// \param T the \c QualType that should have been complete at \p Loc
+  ///
+  /// \return true if a diagnostic was produced, false otherwise.
+  virtual bool MaybeDiagnoseMissingCompleteType(SourceLocation Loc, QualType T);
+
   // isa/cast/dyn_cast support
   static bool classof(const MultiplexExternalSemaSource*) { return true; }
   //static bool classof(const ExternalSemaSource*) { return true; }
diff --git a/include/clang/Sema/Overload.h b/include/clang/Sema/Overload.h
index c685843f18cd..b8bd14aa1cd5 100644
--- a/include/clang/Sema/Overload.h
+++ b/include/clang/Sema/Overload.h
@@ -22,6 +22,7 @@
 #include "clang/AST/Type.h"
 #include "clang/AST/UnresolvedSet.h"
 #include "clang/Sema/SemaFixItUtils.h"
+#include "clang/Sema/TemplateDeduction.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/Support/Allocator.h"
@@ -241,7 +242,7 @@ namespace clang {
                                    QualType &ConstantType) const;
     bool isPointerConversionToBool() const;
     bool isPointerConversionToVoidPointer(ASTContext& Context) const;
-    void DebugPrint() const;
+    void dump() const;
   };
 
   /// UserDefinedConversionSequence - Represents a user-defined
@@ -287,7 +288,7 @@ namespace clang {
     /// that refers to \c ConversionFunction.
     DeclAccessPair FoundConversionFunction;
 
-    void DebugPrint() const;
+    void dump() const;
   };
 
   /// Represents an ambiguous user-defined conversion sequence.
@@ -405,9 +406,6 @@ namespace clang {
     /// ConversionKind - The kind of implicit conversion sequence.
     unsigned ConversionKind : 30;
 
-    /// \brief Whether the argument is an initializer list.
-    bool ListInitializationSequence : 1;
-
     /// \brief Whether the target is really a std::initializer_list, and the
     /// sequence only represents the worst element conversion.
     bool StdInitializerListElement : 1;
@@ -440,16 +438,14 @@ namespace clang {
       BadConversionSequence Bad;
     };
 
-    ImplicitConversionSequence() 
-      : ConversionKind(Uninitialized), ListInitializationSequence(false),
-        StdInitializerListElement(false)
+    ImplicitConversionSequence()
+      : ConversionKind(Uninitialized), StdInitializerListElement(false)
     {}
     ~ImplicitConversionSequence() {
       destruct();
     }
     ImplicitConversionSequence(const ImplicitConversionSequence &Other)
-      : ConversionKind(Other.ConversionKind), 
-        ListInitializationSequence(Other.ListInitializationSequence),
+      : ConversionKind(Other.ConversionKind),
         StdInitializerListElement(Other.StdInitializerListElement)
     {
       switch (ConversionKind) {
@@ -535,16 +531,6 @@ namespace clang {
       Ambiguous.construct();
     }
 
-    /// \brief Whether this sequence was created by the rules of
-    /// list-initialization sequences.
-    bool isListInitializationSequence() const {
-      return ListInitializationSequence;
-    }
-
-    void setListInitializationSequence() {
-      ListInitializationSequence = true;
-    }
-
     /// \brief Whether the target is really a std::initializer_list, and the
     /// sequence only represents the worst element conversion.
     bool isStdInitializerListElement() const {
@@ -568,7 +554,7 @@ namespace clang {
                                      SourceLocation CaretLoc,
                                      const PartialDiagnostic &PDiag) const;
 
-    void DebugPrint() const;
+    void dump() const;
   };
 
   enum OverloadFailureKind {
@@ -656,53 +642,6 @@ namespace clang {
     /// \brief The number of call arguments that were explicitly provided,
     /// to be used while performing partial ordering of function templates.
     unsigned ExplicitCallArguments;
-    
-    /// A structure used to record information about a failed
-    /// template argument deduction.
-    struct DeductionFailureInfo {
-      /// A Sema::TemplateDeductionResult.
-      unsigned Result : 8;
-
-      /// \brief Indicates whether a diagnostic is stored in Diagnostic.
-      unsigned HasDiagnostic : 1;
-
-      /// \brief Opaque pointer containing additional data about
-      /// this deduction failure.
-      void *Data;
-
-      /// \brief A diagnostic indicating why deduction failed.
-      union {
-        void *Align;
-        char Diagnostic[sizeof(PartialDiagnosticAt)];
-      };
-
-      /// \brief Retrieve the diagnostic which caused this deduction failure,
-      /// if any.
-      PartialDiagnosticAt *getSFINAEDiagnostic();
-      
-      /// \brief Retrieve the template parameter this deduction failure
-      /// refers to, if any.
-      TemplateParameter getTemplateParameter();
-      
-      /// \brief Retrieve the template argument list associated with this
-      /// deduction failure, if any.
-      TemplateArgumentList *getTemplateArgumentList();
-      
-      /// \brief Return the first template argument this deduction failure
-      /// refers to, if any.
-      const TemplateArgument *getFirstArg();
-
-      /// \brief Return the second template argument this deduction failure
-      /// refers to, if any.
-      const TemplateArgument *getSecondArg();
-
-      /// \brief Return the expression this deduction failure refers to,
-      /// if any.
-      Expr *getExpr();
-      
-      /// \brief Free any memory associated with this deduction failure.
-      void Destroy();
-    };
 
     union {
       DeductionFailureInfo DeductionFailure;
@@ -773,7 +712,7 @@ namespace clang {
     /// \brief Clear out all of the candidates.
     void clear();
 
-    typedef SmallVector<OverloadCandidate, 16>::iterator iterator;
+    typedef SmallVectorImpl<OverloadCandidate>::iterator iterator;
     iterator begin() { return Candidates.begin(); }
     iterator end() { return Candidates.end(); }
 
diff --git a/include/clang/Sema/Ownership.h b/include/clang/Sema/Ownership.h
index c3d1f4e0b7db..b7d7710eb121 100644
--- a/include/clang/Sema/Ownership.h
+++ b/include/clang/Sema/Ownership.h
@@ -33,8 +33,12 @@ namespace clang {
   class TemplateName;
   class TemplateParameterList;
 
-  /// OpaquePtr - This is a very simple POD type that wraps a pointer that the
-  /// Parser doesn't know about but that Sema or another client does.  The UID
+  /// \brief Wrapper for void* pointer.
+  /// \tparam PtrTy Either a pointer type like 'T*' or a type that behaves like
+  ///               a pointer.
+  ///
+  /// This is a very simple POD type that wraps a pointer that the Parser
+  /// doesn't know about but that Sema or another client does.  The PtrTy
   /// template argument is used to make sure that "Decl" pointers are not
   /// compatible with "Type" pointers for example.
   template <class PtrTy>
@@ -49,11 +53,21 @@ namespace clang {
 
     static OpaquePtr make(PtrTy P) { OpaquePtr OP; OP.set(P); return OP; }
 
-    template <typename T> T* getAs() const {
+    /// \brief Returns plain pointer to the entity pointed by this wrapper.
+    /// \tparam PointeeT Type of pointed entity.
+    ///
+    /// It is identical to getPtrAs<PointeeT*>.
+    template <typename PointeeT> PointeeT* getPtrTo() const {
       return get();
     }
 
-    template <typename T> T getAsVal() const {
+    /// \brief Returns pointer converted to the specified type.
+    /// \tparam PtrT Result pointer type.  There must be implicit conversion
+    ///              from PtrTy to PtrT.
+    ///
+    /// In contrast to getPtrTo, this method allows the return type to be
+    /// a smart pointer.
+    template <typename PtrT> PtrT getPtrAs() const {
       return get();
     }
 
@@ -65,7 +79,7 @@ namespace clang {
       Ptr = Traits::getAsVoidPointer(P);
     }
 
-    operator bool() const { return Ptr != 0; }
+    LLVM_EXPLICIT operator bool() const { return Ptr != 0; }
 
     void *getAsOpaquePtr() const { return Ptr; }
     static OpaquePtr getFromOpaquePtr(void *P) { return OpaquePtr(P); }
diff --git a/include/clang/Sema/Scope.h b/include/clang/Sema/Scope.h
index d016b9b887c5..249a4c74311b 100644
--- a/include/clang/Sema/Scope.h
+++ b/include/clang/Sema/Scope.h
@@ -91,7 +91,10 @@ public:
     TryScope = 0x2000,
 
     /// \brief This is the scope for a function-level C++ try or catch scope.
-    FnTryCatchScope = 0x4000
+    FnTryCatchScope = 0x4000,
+
+    /// \brief This is the scope of OpenMP executable directive
+    OpenMPDirectiveScope = 0x8000
   };
 private:
   /// The parent scope for this scope.  This is null for the translation-unit
@@ -143,11 +146,10 @@ private:
   typedef llvm::SmallPtrSet<Decl *, 32> DeclSetTy;
   DeclSetTy DeclsInScope;
 
-  /// Entity - The entity with which this scope is associated. For
+  /// The DeclContext with which this scope is associated. For
   /// example, the entity of a class scope is the class itself, the
-  /// entity of a function scope is a function, etc. This field is
-  /// maintained by the Action implementation.
-  void *Entity;
+  /// entity of a function scope is a function, etc.
+  DeclContext *Entity;
 
   typedef SmallVector<UsingDirectiveDecl *, 2> UsingDirectivesTy;
   UsingDirectivesTy UsingDirectives;
@@ -236,8 +238,8 @@ public:
     return DeclsInScope.count(D) != 0;
   }
 
-  void* getEntity() const { return Entity; }
-  void setEntity(void *E) { Entity = E; }
+  DeclContext *getEntity() const { return Entity; }
+  void setEntity(DeclContext *E) { Entity = E; }
 
   bool hasErrorOccurred() const { return ErrorTrap.hasErrorOccurred(); }
 
@@ -301,7 +303,12 @@ public:
     }
     return false;
   }
-  
+
+  /// \brief Determines whether this scope is the OpenMP directive scope
+  bool isOpenMPDirectiveScope() const {
+    return (getFlags() & Scope::OpenMPDirectiveScope);
+  }
+
   /// \brief Determine whether this scope is a C++ 'try' block.
   bool isTryScope() const { return getFlags() & Scope::TryScope; }
 
diff --git a/include/clang/Sema/ScopeInfo.h b/include/clang/Sema/ScopeInfo.h
index b232b59d3c17..06afe1a8ae9d 100644
--- a/include/clang/Sema/ScopeInfo.h
+++ b/include/clang/Sema/ScopeInfo.h
@@ -18,8 +18,11 @@
 #include "clang/AST/Type.h"
 #include "clang/Basic/CapturedStmt.h"
 #include "clang/Basic/PartialDiagnostic.h"
+#include "clang/Sema/Ownership.h"
 #include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/SmallSet.h"
 #include "llvm/ADT/SmallVector.h"
+#include <algorithm>
 
 namespace clang {
 
@@ -27,6 +30,7 @@ class Decl;
 class BlockDecl;
 class CapturedDecl;
 class CXXMethodDecl;
+class FieldDecl;
 class ObjCPropertyDecl;
 class IdentifierInfo;
 class ImplicitParamDecl;
@@ -34,8 +38,11 @@ class LabelDecl;
 class ReturnStmt;
 class Scope;
 class SwitchStmt;
+class TemplateTypeParmDecl;
+class TemplateParameterList;
 class VarDecl;
 class DeclRefExpr;
+class MemberExpr;
 class ObjCIvarRefExpr;
 class ObjCPropertyRefExpr;
 class ObjCMessageExpr;
@@ -330,60 +337,78 @@ public:
   ImplicitCaptureStyle ImpCaptureStyle;
 
   class Capture {
-    // There are two categories of capture: capturing 'this', and capturing
-    // local variables.  There are three ways to capture a local variable:
-    // capture by copy in the C++11 sense, capture by reference
-    // in the C++11 sense, and __block capture.  Lambdas explicitly specify
-    // capture by copy or capture by reference.  For blocks, __block capture
-    // applies to variables with that annotation, variables of reference type
-    // are captured by reference, and other variables are captured by copy.
+    // There are three categories of capture: capturing 'this', capturing
+    // local variables, and C++1y initialized captures (which can have an
+    // arbitrary initializer, and don't really capture in the traditional
+    // sense at all).
+    //
+    // There are three ways to capture a local variable:
+    //  - capture by copy in the C++11 sense,
+    //  - capture by reference in the C++11 sense, and
+    //  - __block capture.
+    // Lambdas explicitly specify capture by copy or capture by reference.
+    // For blocks, __block capture applies to variables with that annotation,
+    // variables of reference type are captured by reference, and other
+    // variables are captured by copy.
     enum CaptureKind {
-      Cap_This, Cap_ByCopy, Cap_ByRef, Cap_Block
+      Cap_ByCopy, Cap_ByRef, Cap_Block, Cap_This
     };
 
-    // The variable being captured (if we are not capturing 'this'),
-    // and misc bits descibing the capture.
-    llvm::PointerIntPair<VarDecl*, 2, CaptureKind> VarAndKind;
+    /// The variable being captured (if we are not capturing 'this') and whether
+    /// this is a nested capture.
+    llvm::PointerIntPair<VarDecl*, 1, bool> VarAndNested;
 
-    // Expression to initialize a field of the given type, and whether this
-    // is a nested capture; the expression is only required if we are
-    // capturing ByVal and the variable's type has a non-trivial
-    // copy constructor.
-    llvm::PointerIntPair<Expr*, 1, bool> CopyExprAndNested;
+    /// Expression to initialize a field of the given type, and the kind of
+    /// capture (if this is a capture and not an init-capture). The expression
+    /// is only required if we are capturing ByVal and the variable's type has
+    /// a non-trivial copy constructor.
+    llvm::PointerIntPair<Expr*, 2, CaptureKind> InitExprAndCaptureKind;
 
-    /// \brief The source location at which the first capture occurred..
+    /// \brief The source location at which the first capture occurred.
     SourceLocation Loc;
-    
+
     /// \brief The location of the ellipsis that expands a parameter pack.
     SourceLocation EllipsisLoc;
-    
+
     /// \brief The type as it was captured, which is in effect the type of the
     /// non-static data member that would hold the capture.
     QualType CaptureType;
-    
+
   public:
-    Capture(VarDecl *Var, bool block, bool byRef, bool isNested, 
-            SourceLocation Loc, SourceLocation EllipsisLoc, 
+    Capture(VarDecl *Var, bool Block, bool ByRef, bool IsNested,
+            SourceLocation Loc, SourceLocation EllipsisLoc,
             QualType CaptureType, Expr *Cpy)
-      : VarAndKind(Var, block ? Cap_Block : byRef ? Cap_ByRef : Cap_ByCopy),
-        CopyExprAndNested(Cpy, isNested), Loc(Loc), EllipsisLoc(EllipsisLoc),
-        CaptureType(CaptureType){}
+        : VarAndNested(Var, IsNested),
+          InitExprAndCaptureKind(Cpy, Block ? Cap_Block :
+                                      ByRef ? Cap_ByRef : Cap_ByCopy),
+          Loc(Loc), EllipsisLoc(EllipsisLoc), CaptureType(CaptureType) {}
 
     enum IsThisCapture { ThisCapture };
-    Capture(IsThisCapture, bool isNested, SourceLocation Loc, 
+    Capture(IsThisCapture, bool IsNested, SourceLocation Loc,
             QualType CaptureType, Expr *Cpy)
-      : VarAndKind(0, Cap_This), CopyExprAndNested(Cpy, isNested), Loc(Loc),
-        EllipsisLoc(), CaptureType(CaptureType) { }
+        : VarAndNested(0, IsNested),
+          InitExprAndCaptureKind(Cpy, Cap_This),
+          Loc(Loc), EllipsisLoc(), CaptureType(CaptureType) {}
 
-    bool isThisCapture() const { return VarAndKind.getInt() == Cap_This; }
-    bool isVariableCapture() const { return !isThisCapture(); }
-    bool isCopyCapture() const { return VarAndKind.getInt() == Cap_ByCopy; }
-    bool isReferenceCapture() const { return VarAndKind.getInt() == Cap_ByRef; }
-    bool isBlockCapture() const { return VarAndKind.getInt() == Cap_Block; }
-    bool isNested() { return CopyExprAndNested.getInt(); }
+    bool isThisCapture() const {
+      return InitExprAndCaptureKind.getInt() == Cap_This;
+    }
+    bool isVariableCapture() const {
+      return InitExprAndCaptureKind.getInt() != Cap_This;
+    }
+    bool isCopyCapture() const {
+      return InitExprAndCaptureKind.getInt() == Cap_ByCopy;
+    }
+    bool isReferenceCapture() const {
+      return InitExprAndCaptureKind.getInt() == Cap_ByRef;
+    }
+    bool isBlockCapture() const {
+      return InitExprAndCaptureKind.getInt() == Cap_Block;
+    }
+    bool isNested() { return VarAndNested.getInt(); }
 
     VarDecl *getVariable() const {
-      return VarAndKind.getPointer();
+      return VarAndNested.getPointer();
     }
     
     /// \brief Retrieve the location at which this variable was captured.
@@ -398,8 +423,8 @@ public:
     /// that would store this capture.
     QualType getCaptureType() const { return CaptureType; }
     
-    Expr *getCopyExpr() const {
-      return CopyExprAndNested.getPointer();
+    Expr *getInitExpr() const {
+      return InitExprAndCaptureKind.getPointer();
     }
   };
 
@@ -529,6 +554,8 @@ public:
     switch (CapRegionKind) {
     case CR_Default:
       return "default captured statement";
+    case CR_OpenMP:
+      return "OpenMP region";
     }
     llvm_unreachable("Invalid captured region kind!");
   }
@@ -543,19 +570,23 @@ public:
   /// \brief The class that describes the lambda.
   CXXRecordDecl *Lambda;
 
-  /// \brief The class that describes the lambda.
+  /// \brief The lambda's compiler-generated \c operator().
   CXXMethodDecl *CallOperator;
 
   /// \brief Source range covering the lambda introducer [...].
   SourceRange IntroducerRange;
 
-  /// \brief The number of captures in the \c Captures list that are 
+  /// \brief Source location of the '&' or '=' specifying the default capture
+  /// type, if any.
+  SourceLocation CaptureDefaultLoc;
+
+  /// \brief The number of captures in the \c Captures list that are
   /// explicit captures.
   unsigned NumExplicitCaptures;
 
   /// \brief Whether this is a mutable lambda.
   bool Mutable;
-  
+
   /// \brief Whether the (empty) parameter list is explicit.
   bool ExplicitParams;
 
@@ -572,25 +603,169 @@ public:
   /// its list of array index variables.
   SmallVector<unsigned, 4> ArrayIndexStarts;
   
-  LambdaScopeInfo(DiagnosticsEngine &Diag, CXXRecordDecl *Lambda,
-                  CXXMethodDecl *CallOperator)
-    : CapturingScopeInfo(Diag, ImpCap_None), Lambda(Lambda),
-      CallOperator(CallOperator), NumExplicitCaptures(0), Mutable(false),
-      ExprNeedsCleanups(false), ContainsUnexpandedParameterPack(false)
+  /// \brief If this is a generic lambda, use this as the depth of 
+  /// each 'auto' parameter, during initial AST construction.
+  unsigned AutoTemplateParameterDepth;
+
+  /// \brief Store the list of the auto parameters for a generic lambda.
+  /// If this is a generic lambda, store the list of the auto 
+  /// parameters converted into TemplateTypeParmDecls into a vector
+  /// that can be used to construct the generic lambda's template
+  /// parameter list, during initial AST construction.
+  SmallVector<TemplateTypeParmDecl*, 4> AutoTemplateParams;
+
+  /// If this is a generic lambda, and the template parameter
+  /// list has been created (from the AutoTemplateParams) then
+  /// store a reference to it (cache it to avoid reconstructing it).
+  TemplateParameterList *GLTemplateParameterList;
+  
+  /// \brief Contains all variable-referring-expressions (i.e. DeclRefExprs
+  ///  or MemberExprs) that refer to local variables in a generic lambda
+  ///  or a lambda in a potentially-evaluated-if-used context.
+  ///  
+  ///  Potentially capturable variables of a nested lambda that might need 
+  ///   to be captured by the lambda are housed here.  
+  ///  This is specifically useful for generic lambdas or
+  ///  lambdas within a a potentially evaluated-if-used context.
+  ///  If an enclosing variable is named in an expression of a lambda nested
+  ///  within a generic lambda, we don't always know know whether the variable 
+  ///  will truly be odr-used (i.e. need to be captured) by that nested lambda,
+  ///  until its instantiation. But we still need to capture it in the 
+  ///  enclosing lambda if all intervening lambdas can capture the variable.
+
+  llvm::SmallVector<Expr*, 4> PotentiallyCapturingExprs;
+
+  /// \brief Contains all variable-referring-expressions that refer
+  ///  to local variables that are usable as constant expressions and
+  ///  do not involve an odr-use (they may still need to be captured
+  ///  if the enclosing full-expression is instantiation dependent).
+  llvm::SmallSet<Expr*, 8> NonODRUsedCapturingExprs; 
+
+  SourceLocation PotentialThisCaptureLocation;
+
+  LambdaScopeInfo(DiagnosticsEngine &Diag)
+    : CapturingScopeInfo(Diag, ImpCap_None), Lambda(0),
+      CallOperator(0), NumExplicitCaptures(0), Mutable(false),
+      ExprNeedsCleanups(false), ContainsUnexpandedParameterPack(false),
+      AutoTemplateParameterDepth(0), GLTemplateParameterList(0)
   {
     Kind = SK_Lambda;
   }
 
   virtual ~LambdaScopeInfo();
 
-  /// \brief Note when 
+  /// \brief Note when all explicit captures have been added.
   void finishedExplicitCaptures() {
     NumExplicitCaptures = Captures.size();
   }
 
   static bool classof(const FunctionScopeInfo *FSI) {
-    return FSI->Kind == SK_Lambda; 
+    return FSI->Kind == SK_Lambda;
   }
+
+  ///
+  /// \brief Add a variable that might potentially be captured by the 
+  /// lambda and therefore the enclosing lambdas. 
+  /// 
+  /// This is also used by enclosing lambda's to speculatively capture 
+  /// variables that nested lambda's - depending on their enclosing
+  /// specialization - might need to capture.
+  /// Consider:
+  /// void f(int, int); <-- don't capture
+  /// void f(const int&, double); <-- capture
+  /// void foo() {
+  ///   const int x = 10;
+  ///   auto L = [=](auto a) { // capture 'x'
+  ///      return [=](auto b) { 
+  ///        f(x, a);  // we may or may not need to capture 'x'
+  ///      };
+  ///   };
+  /// }
+  void addPotentialCapture(Expr *VarExpr) {
+    assert(isa<DeclRefExpr>(VarExpr) || isa<MemberExpr>(VarExpr));
+    PotentiallyCapturingExprs.push_back(VarExpr);
+  }
+  
+  void addPotentialThisCapture(SourceLocation Loc) {
+    PotentialThisCaptureLocation = Loc;
+  }
+  bool hasPotentialThisCapture() const { 
+    return PotentialThisCaptureLocation.isValid(); 
+  }
+
+  /// \brief Mark a variable's reference in a lambda as non-odr using.
+  ///
+  /// For generic lambdas, if a variable is named in a potentially evaluated 
+  /// expression, where the enclosing full expression is dependent then we 
+  /// must capture the variable (given a default capture).
+  /// This is accomplished by recording all references to variables 
+  /// (DeclRefExprs or MemberExprs) within said nested lambda in its array of 
+  /// PotentialCaptures. All such variables have to be captured by that lambda,
+  /// except for as described below.
+  /// If that variable is usable as a constant expression and is named in a 
+  /// manner that does not involve its odr-use (e.g. undergoes 
+  /// lvalue-to-rvalue conversion, or discarded) record that it is so. Upon the
+  /// act of analyzing the enclosing full expression (ActOnFinishFullExpr)
+  /// if we can determine that the full expression is not instantiation-
+  /// dependent, then we can entirely avoid its capture. 
+  ///

+  ///   const int n = 0;

+  ///   [&] (auto x) {

+  ///     (void)+n + x;

+  ///   };
+  /// Interestingly, this strategy would involve a capture of n, even though 
+  /// it's obviously not odr-used here, because the full-expression is 
+  /// instantiation-dependent.  It could be useful to avoid capturing such
+  /// variables, even when they are referred to in an instantiation-dependent
+  /// expression, if we can unambiguously determine that they shall never be
+  /// odr-used.  This would involve removal of the variable-referring-expression
+  /// from the array of PotentialCaptures during the lvalue-to-rvalue 
+  /// conversions.  But per the working draft N3797, (post-chicago 2013) we must
+  /// capture such variables. 
+  /// Before anyone is tempted to implement a strategy for not-capturing 'n',
+  /// consider the insightful warning in: 
+  ///    /cfe-commits/Week-of-Mon-20131104/092596.html
+  /// "The problem is that the set of captures for a lambda is part of the ABI

+  ///  (since lambda layout can be made visible through inline functions and the

+  ///  like), and there are no guarantees as to which cases we'll manage to build

+  ///  an lvalue-to-rvalue conversion in, when parsing a template -- some

+  ///  seemingly harmless change elsewhere in Sema could cause us to start or stop

+  ///  building such a node. So we need a rule that anyone can implement and get

+  ///  exactly the same result".
+  ///    
+  void markVariableExprAsNonODRUsed(Expr *CapturingVarExpr) {
+    assert(isa<DeclRefExpr>(CapturingVarExpr) 
+        || isa<MemberExpr>(CapturingVarExpr));
+    NonODRUsedCapturingExprs.insert(CapturingVarExpr);
+  }
+  bool isVariableExprMarkedAsNonODRUsed(Expr *CapturingVarExpr) {
+    assert(isa<DeclRefExpr>(CapturingVarExpr) 
+      || isa<MemberExpr>(CapturingVarExpr));
+    return NonODRUsedCapturingExprs.count(CapturingVarExpr);
+  }
+  void removePotentialCapture(Expr *E) {
+    PotentiallyCapturingExprs.erase(
+        std::remove(PotentiallyCapturingExprs.begin(), 
+            PotentiallyCapturingExprs.end(), E), 
+        PotentiallyCapturingExprs.end());
+  }
+  void clearPotentialCaptures() {
+    PotentiallyCapturingExprs.clear();
+    PotentialThisCaptureLocation = SourceLocation();
+  }
+  unsigned getNumPotentialVariableCaptures() const { 
+    return PotentiallyCapturingExprs.size(); 
+  }
+
+  bool hasPotentialCaptures() const { 
+    return getNumPotentialVariableCaptures() || 
+                                  PotentialThisCaptureLocation.isValid(); 
+  }
+  
+  // When passed the index, returns the VarDecl and Expr associated 
+  // with the index.
+  void getPotentialVariableCapture(unsigned Idx, VarDecl *&VD, Expr *&E);
+ 
 };
 
 
diff --git a/include/clang/Sema/Sema.h b/include/clang/Sema/Sema.h
index d7c80f2e4f91..48794d6f02fd 100644
--- a/include/clang/Sema/Sema.h
+++ b/include/clang/Sema/Sema.h
@@ -20,12 +20,13 @@
 #include "clang/AST/Expr.h"
 #include "clang/AST/ExprObjC.h"
 #include "clang/AST/ExternalASTSource.h"
-#include "clang/AST/LambdaMangleContext.h"
+#include "clang/AST/MangleNumberingContext.h"
 #include "clang/AST/NSAPI.h"
 #include "clang/AST/PrettyPrinter.h"
 #include "clang/AST/TypeLoc.h"
 #include "clang/Basic/ExpressionTraits.h"
 #include "clang/Basic/LangOptions.h"
+#include "clang/Basic/OpenMPKinds.h"
 #include "clang/Basic/Specifiers.h"
 #include "clang/Basic/TemplateKinds.h"
 #include "clang/Basic/TypeTraits.h"
@@ -49,6 +50,7 @@
 #include "llvm/MC/MCParser/MCAsmParser.h"
 #include <deque>
 #include <string>
+#include <vector>
 
 namespace llvm {
   class APSInt;
@@ -85,6 +87,7 @@ namespace clang {
   class ClassTemplateDecl;
   class ClassTemplatePartialSpecializationDecl;
   class ClassTemplateSpecializationDecl;
+  class VarTemplatePartialSpecializationDecl;
   class CodeCompleteConsumer;
   class CodeCompletionAllocator;
   class CodeCompletionTUInfo;
@@ -136,6 +139,7 @@ namespace clang {
   class ObjCPropertyDecl;
   class ObjCProtocolDecl;
   class OMPThreadPrivateDecl;
+  class OMPClause;
   class OverloadCandidateSet;
   class OverloadExpr;
   class ParenListExpr;
@@ -170,9 +174,12 @@ namespace clang {
   class UsingShadowDecl;
   class ValueDecl;
   class VarDecl;
+  class VarTemplateSpecializationDecl;
   class VisibilityAttr;
   class VisibleDeclConsumer;
   class IndirectFieldDecl;
+  struct DeductionFailureInfo;
+  class TemplateSpecCandidateSet;
 
 namespace sema {
   class AccessedEntity;
@@ -215,7 +222,7 @@ class Sema {
     // it will keep having external linkage. If it has internal linkage, we
     // will not link it. Since it has no previous decls, it will remain
     // with internal linkage.
-    return !Old->isHidden() || New->hasExternalLinkage();
+    return !Old->isHidden() || New->isExternallyVisible();
   }
 
 public:
@@ -274,6 +281,12 @@ public:
   /// element type here is ExprWithCleanups::Object.
   SmallVector<BlockDecl*, 8> ExprCleanupObjects;
 
+  /// \brief Store a list of either DeclRefExprs or MemberExprs
+  ///  that contain a reference to a variable (constant) that may or may not
+  ///  be odr-used in this Expr, and we won't know until all lvalue-to-rvalue
+  ///  and discarded value conversions have been applied to all subexpressions 
+  ///  of the enclosing full expression.  This is cleared at the end of each 
+  ///  full expression. 
   llvm::SmallPtrSet<Expr*, 2> MaybeODRUseExprs;
 
   /// \brief Stack containing information about each of the nested
@@ -340,8 +353,7 @@ public:
   llvm::DenseMap<DeclarationName, NamedDecl *> LocallyScopedExternCDecls;
 
   /// \brief Look for a locally scoped extern "C" declaration by the given name.
-  llvm::DenseMap<DeclarationName, NamedDecl *>::iterator
-  findLocallyScopedExternCDecl(DeclarationName Name);
+  NamedDecl *findLocallyScopedExternCDecl(DeclarationName Name);
 
   typedef LazyVector<VarDecl *, ExternalSemaSource,
                      &ExternalSemaSource::ReadTentativeDefinitions, 2, 2>
@@ -366,11 +378,6 @@ public:
   /// cycle detection at the end of the TU.
   DelegatingCtorDeclsType DelegatingCtorDecls;
 
-  /// \brief All the destructors seen during a class definition that had their
-  /// exception spec computation delayed because it depended on an unparsed
-  /// exception spec.
-  SmallVector<CXXDestructorDecl*, 2> DelayedDestructorExceptionSpecs;
-
   /// \brief All the overriding destructors seen during a class definition
   /// (there could be multiple due to nested classes) that had their exception
   /// spec checks delayed, plus the overridden destructor.
@@ -388,8 +395,12 @@ public:
   SmallVector<std::pair<CXXMethodDecl*, const FunctionProtoType*>, 2>
     DelayedDefaultedMemberExceptionSpecs;
 
+  typedef llvm::DenseMap<const FunctionDecl *, LateParsedTemplate *>
+  LateParsedTemplateMapT;
+  LateParsedTemplateMapT LateParsedTemplateMap;
+
   /// \brief Callback to the parser to parse templated functions when needed.
-  typedef void LateTemplateParserCB(void *P, const FunctionDecl *FD);
+  typedef void LateTemplateParserCB(void *P, LateParsedTemplate &LPT);
   LateTemplateParserCB *LateTemplateParser;
   void *OpaqueParser;
 
@@ -621,7 +632,7 @@ public:
 
     /// \brief The current context is "potentially evaluated" in C++11 terms,
     /// but the expression is evaluated at compile-time (like the values of
-    /// cases in a switch statment).
+    /// cases in a switch statement).
     ConstantEvaluated,
 
     /// \brief The current expression is potentially evaluated at run time,
@@ -662,17 +673,17 @@ public:
     /// is indeed an unevaluated context.
     SmallVector<LambdaExpr *, 2> Lambdas;
 
-    /// \brief The declaration that provides context for the lambda expression
-    /// if the normal declaration context does not suffice, e.g., in a
-    /// default function argument.
-    Decl *LambdaContextDecl;
+    /// \brief The declaration that provides context for lambda expressions
+    /// and block literals if the normal declaration context does not
+    /// suffice, e.g., in a default function argument.
+    Decl *ManglingContextDecl;
 
     /// \brief The context information used to mangle lambda expressions
-    /// within this context.
+    /// and block literals within this context.
     ///
     /// This mangling information is allocated lazily, since most contexts
-    /// do not have lambda expressions.
-    IntrusiveRefCntPtr<LambdaMangleContext> LambdaMangle;
+    /// do not have lambda expressions or block literals.
+    IntrusiveRefCntPtr<MangleNumberingContext> MangleNumbering;
 
     /// \brief If we are processing a decltype type, a set of call expressions
     /// for which we have deferred checking the completeness of the return type.
@@ -685,19 +696,15 @@ public:
     ExpressionEvaluationContextRecord(ExpressionEvaluationContext Context,
                                       unsigned NumCleanupObjects,
                                       bool ParentNeedsCleanups,
-                                      Decl *LambdaContextDecl,
+                                      Decl *ManglingContextDecl,
                                       bool IsDecltype)
       : Context(Context), ParentNeedsCleanups(ParentNeedsCleanups),
         IsDecltype(IsDecltype), NumCleanupObjects(NumCleanupObjects),
-        LambdaContextDecl(LambdaContextDecl), LambdaMangle() { }
-
-    /// \brief Retrieve the mangling context for lambdas.
-    LambdaMangleContext &getLambdaMangleContext() {
-      assert(LambdaContextDecl && "Need to have a lambda context declaration");
-      if (!LambdaMangle)
-        LambdaMangle = new LambdaMangleContext;
-      return *LambdaMangle;
-    }
+        ManglingContextDecl(ManglingContextDecl), MangleNumbering() { }
+
+    /// \brief Retrieve the mangling numbering context, used to consistently
+    /// number constructs like lambdas for mangling.
+    MangleNumberingContext &getMangleNumberingContext(ASTContext &Ctx);
 
     bool isUnevaluated() const {
       return Context == Unevaluated || Context == UnevaluatedAbstract;
@@ -707,6 +714,18 @@ public:
   /// A stack of expression evaluation contexts.
   SmallVector<ExpressionEvaluationContextRecord, 8> ExprEvalContexts;
 
+  /// \brief Compute the mangling number context for a lambda expression or
+  /// block literal.
+  ///
+  /// \param DC - The DeclContext containing the lambda expression or
+  /// block literal.
+  /// \param[out] ManglingContextDecl - Returns the ManglingContextDecl
+  /// associated with the context, if relevant.
+  MangleNumberingContext *getCurrentMangleNumberContext(
+    const DeclContext *DC,
+    Decl *&ManglingContextDecl);
+
+
   /// SpecialMemberOverloadResult - The overloading result for a special member
   /// function.
   ///
@@ -775,7 +794,7 @@ public:
 
   /// Obtain a sorted list of functions that are undefined but ODR-used.
   void getUndefinedButUsed(
-    llvm::SmallVectorImpl<std::pair<NamedDecl *, SourceLocation> > &Undefined);
+      SmallVectorImpl<std::pair<NamedDecl *, SourceLocation> > &Undefined);
 
   typedef std::pair<ObjCMethodList, ObjCMethodList> GlobalMethods;
   typedef llvm::DenseMap<Selector, GlobalMethods> GlobalMethodPool;
@@ -905,6 +924,15 @@ public:
       // Dispatch to Sema to emit the diagnostic.
       SemaRef.EmitCurrentDiagnostic(DiagID);
     }
+
+    /// Teach operator<< to produce an object of the correct type.
+    template<typename T>
+    friend const SemaDiagnosticBuilder &operator<<(
+        const SemaDiagnosticBuilder &Diag, const T &Value) {
+      const DiagnosticBuilder &BaseDiag = Diag;
+      BaseDiag << Value;
+      return Diag;
+    }
   };
 
   /// \brief Emit a diagnostic.
@@ -922,8 +950,9 @@ public:
   bool findMacroSpelling(SourceLocation &loc, StringRef name);
 
   /// \brief Get a string to suggest for zero-initialization of a type.
-  std::string getFixItZeroInitializerForType(QualType T) const;
-  std::string getFixItZeroLiteralForType(QualType T) const;
+  std::string
+  getFixItZeroInitializerForType(QualType T, SourceLocation Loc) const;
+  std::string getFixItZeroLiteralForType(QualType T, SourceLocation Loc) const;
 
   ExprResult Owned(Expr* E) { return E; }
   ExprResult Owned(ExprResult R) { return R; }
@@ -937,7 +966,13 @@ public:
 
   void PushFunctionScope();
   void PushBlockScope(Scope *BlockScope, BlockDecl *Block);
-  void PushLambdaScope(CXXRecordDecl *Lambda, CXXMethodDecl *CallOperator);
+  sema::LambdaScopeInfo *PushLambdaScope();
+  
+  /// \brief This is used to inform Sema what the current TemplateParameterDepth
+  /// is during Parsing.  Currently it is used to pass on the depth
+  /// when parsing generic lambda 'auto' parameters.
+  void RecordParsingTemplateParameterDepth(unsigned Depth);
+  
   void PushCapturedRegionScope(Scope *RegionScope, CapturedDecl *CD,
                                RecordDecl *RD,
                                CapturedRegionKind K);
@@ -947,7 +982,13 @@ public:
   sema::FunctionScopeInfo *getCurFunction() const {
     return FunctionScopes.back();
   }
-
+  
+  template <typename ExprT>
+  void recordUseOfEvaluatedWeak(const ExprT *E, bool IsRead=true) {
+    if (!isUnevaluatedContext())
+      getCurFunction()->recordUseOfWeak(E, IsRead);
+  }
+  
   void PushCompoundScope();
   void PopCompoundScope();
 
@@ -958,14 +999,17 @@ public:
   /// \brief Retrieve the current block, if any.
   sema::BlockScopeInfo *getCurBlock();
 
-  /// \brief Retrieve the current lambda expression, if any.
+  /// \brief Retrieve the current lambda scope info, if any.
   sema::LambdaScopeInfo *getCurLambda();
 
+  /// \brief Retrieve the current generic lambda info, if any.
+  sema::LambdaScopeInfo *getCurGenericLambda();
+
   /// \brief Retrieve the current captured region, if any.
   sema::CapturedRegionScopeInfo *getCurCapturedRegion();
 
   /// WeakTopLevelDeclDecls - access to \#pragma weak-generated Decls
-  SmallVector<Decl*,2> &WeakTopLevelDecls() { return WeakTopLevelDecl; }
+  SmallVectorImpl<Decl *> &WeakTopLevelDecls() { return WeakTopLevelDecl; }
 
   void ActOnComment(SourceRange Comment);
 
@@ -987,6 +1031,8 @@ public:
   QualType BuildExtVectorType(QualType T, Expr *ArraySize,
                               SourceLocation AttrLoc);
 
+  bool CheckFunctionReturnType(QualType T, SourceLocation Loc);
+
   /// \brief Build a function type.
   ///
   /// This routine checks the function type according to C++ rules and
@@ -1152,6 +1198,10 @@ public:
     virtual ~BoundTypeDiagnoser3() { }
   };
 
+private:
+  bool RequireCompleteTypeImpl(SourceLocation Loc, QualType T,
+                           TypeDiagnoser &Diagnoser);
+public:
   bool RequireCompleteType(SourceLocation Loc, QualType T,
                            TypeDiagnoser &Diagnoser);
   bool RequireCompleteType(SourceLocation Loc, QualType T,
@@ -1287,6 +1337,7 @@ public:
     NC_Expression,
     NC_NestedNameSpecifier,
     NC_TypeTemplate,
+    NC_VarTemplate,
     NC_FunctionTemplate
   };
 
@@ -1325,6 +1376,12 @@ public:
       return Result;
     }
 
+    static NameClassification VarTemplate(TemplateName Name) {
+      NameClassification Result(NC_VarTemplate);
+      Result.Template = Name;
+      return Result;
+    }
+
     static NameClassification FunctionTemplate(TemplateName Name) {
       NameClassification Result(NC_FunctionTemplate);
       Result.Template = Name;
@@ -1344,13 +1401,22 @@ public:
     }
 
     TemplateName getTemplateName() const {
-      assert(Kind == NC_TypeTemplate || Kind == NC_FunctionTemplate);
+      assert(Kind == NC_TypeTemplate || Kind == NC_FunctionTemplate ||
+             Kind == NC_VarTemplate);
       return Template;
     }
 
     TemplateNameKind getTemplateNameKind() const {
-      assert(Kind == NC_TypeTemplate || Kind == NC_FunctionTemplate);
-      return Kind == NC_TypeTemplate? TNK_Type_template : TNK_Function_template;
+      switch (Kind) {
+      case NC_TypeTemplate:
+        return TNK_Type_template;
+      case NC_FunctionTemplate:
+        return TNK_Function_template;
+      case NC_VarTemplate:
+        return TNK_Var_template;
+      default:
+        llvm_unreachable("unsupported name classification.");
+      }
     }
   };
 
@@ -1390,13 +1456,12 @@ public:
 
   NamedDecl *HandleDeclarator(Scope *S, Declarator &D,
                               MultiTemplateParamsArg TemplateParameterLists);
-  void RegisterLocallyScopedExternCDecl(NamedDecl *ND,
-                                        const LookupResult &Previous,
-                                        Scope *S);
+  void RegisterLocallyScopedExternCDecl(NamedDecl *ND, Scope *S);
   bool DiagnoseClassNameShadow(DeclContext *DC, DeclarationNameInfo Info);
   bool diagnoseQualifiedDeclaration(CXXScopeSpec &SS, DeclContext *DC,
                                     DeclarationName Name,
                                     SourceLocation Loc);
+  static bool adjustContextForLocalExternDecl(DeclContext *&DC);
   void DiagnoseFunctionSpecifiers(const DeclSpec &DS);
   void CheckShadow(Scope *S, VarDecl *D, const LookupResult& R);
   void CheckShadow(Scope *S, VarDecl *D);
@@ -1407,10 +1472,11 @@ public:
                                     LookupResult &Previous);
   NamedDecl* ActOnTypedefNameDecl(Scope* S, DeclContext* DC, TypedefNameDecl *D,
                                   LookupResult &Previous, bool &Redeclaration);
-  NamedDecl* ActOnVariableDeclarator(Scope* S, Declarator& D, DeclContext* DC,
+  NamedDecl *ActOnVariableDeclarator(Scope *S, Declarator &D, DeclContext *DC,
                                      TypeSourceInfo *TInfo,
                                      LookupResult &Previous,
-                                     MultiTemplateParamsArg TemplateParamLists);
+                                     MultiTemplateParamsArg TemplateParamLists,
+                                     bool &AddToScope);
   // Returns true if the variable declaration is a redeclaration
   bool CheckVariableDeclaration(VarDecl *NewVD, LookupResult &Previous);
   void CheckVariableDeclarationType(VarDecl *NewVD);
@@ -1418,6 +1484,7 @@ public:
   void MaybeSuggestAddingStaticToDecl(const FunctionDecl *D);
   void ActOnStartFunctionDeclarator();
   void ActOnEndFunctionDeclarator();
+
   NamedDecl* ActOnFunctionDeclarator(Scope* S, Declarator& D, DeclContext* DC,
                                      TypeSourceInfo *TInfo,
                                      LookupResult &Previous,
@@ -1429,12 +1496,17 @@ public:
   bool CheckConstexprFunctionDecl(const FunctionDecl *FD);
   bool CheckConstexprFunctionBody(const FunctionDecl *FD, Stmt *Body);
 
-  void DiagnoseHiddenVirtualMethods(CXXRecordDecl *DC, CXXMethodDecl *MD);
+  void DiagnoseHiddenVirtualMethods(CXXMethodDecl *MD);
+  void FindHiddenVirtualMethods(CXXMethodDecl *MD,
+                          SmallVectorImpl<CXXMethodDecl*> &OverloadedMethods);
+  void NoteHiddenVirtualMethods(CXXMethodDecl *MD,
+                          SmallVectorImpl<CXXMethodDecl*> &OverloadedMethods);
   // Returns true if the function declaration is a redeclaration
   bool CheckFunctionDeclaration(Scope *S,
                                 FunctionDecl *NewFD, LookupResult &Previous,
                                 bool IsExplicitSpecialization);
   void CheckMain(FunctionDecl *FD, const DeclSpec &D);
+  void CheckMSVCRTEntryPoint(FunctionDecl *FD);
   Decl *ActOnParamDeclarator(Scope *S, Declarator &D);
   ParmVarDecl *BuildParmVarDeclForTypedef(DeclContext *DC,
                                           SourceLocation Loc,
@@ -1462,19 +1534,20 @@ public:
   void SetDeclDefaulted(Decl *dcl, SourceLocation DefaultLoc);
   void FinalizeDeclaration(Decl *D);
   DeclGroupPtrTy FinalizeDeclaratorGroup(Scope *S, const DeclSpec &DS,
-                                         Decl **Group,
-                                         unsigned NumDecls);
-  DeclGroupPtrTy BuildDeclaratorGroup(Decl **Group, unsigned NumDecls,
+                                         ArrayRef<Decl *> Group);
+  DeclGroupPtrTy BuildDeclaratorGroup(llvm::MutableArrayRef<Decl *> Group,
                                       bool TypeMayContainAuto = true);
 
   /// Should be called on all declarations that might have attached
   /// documentation comments.
   void ActOnDocumentableDecl(Decl *D);
-  void ActOnDocumentableDecls(Decl **Group, unsigned NumDecls);
+  void ActOnDocumentableDecls(ArrayRef<Decl *> Group);
 
   void ActOnFinishKNRParamDeclarations(Scope *S, Declarator &D,
                                        SourceLocation LocAfterDecls);
-  void CheckForFunctionRedefinition(FunctionDecl *FD);
+  void CheckForFunctionRedefinition(FunctionDecl *FD,
+                                    const FunctionDecl *EffectiveDefinition =
+                                        0);
   Decl *ActOnStartOfFunctionDef(Scope *S, Declarator &D);
   Decl *ActOnStartOfFunctionDef(Scope *S, Decl *D);
   void ActOnStartOfObjCMethodDef(Scope *S, Decl *D);
@@ -1533,6 +1606,10 @@ public:
   DeclResult ActOnModuleImport(SourceLocation AtLoc, SourceLocation ImportLoc,
                                ModuleIdPath Path);
 
+  /// \brief The parser has processed a module import translated from a
+  /// #include or similar preprocessing directive.
+  void ActOnModuleInclude(SourceLocation DirectiveLoc, Module *Mod);
+
   /// \brief Create an implicit import of the given module at the given
   /// source location.
   ///
@@ -1660,6 +1737,7 @@ public:
   /// member declarations.
   void ActOnStartCXXMemberDeclarations(Scope *S, Decl *TagDecl,
                                        SourceLocation FinalLoc,
+                                       bool IsFinalSpelledSealed,
                                        SourceLocation LBraceLoc);
 
   /// ActOnTagFinishDefinition - Invoked once we have finished parsing
@@ -1748,7 +1826,7 @@ public:
   /// \param ExplicitInstantiationOrSpecialization When true, we are checking
   /// whether the declaration is in scope for the purposes of explicit template
   /// instantiation or specialization. The default is false.
-  bool isDeclInScope(NamedDecl *&D, DeclContext *Ctx, Scope *S = 0,
+  bool isDeclInScope(NamedDecl *D, DeclContext *Ctx, Scope *S = 0,
                      bool ExplicitInstantiationOrSpecialization = false);
 
   /// Finds the scope corresponding to the given decl context, if it
@@ -1780,9 +1858,9 @@ public:
                                     unsigned AttrSpellingListIndex);
   DLLExportAttr *mergeDLLExportAttr(Decl *D, SourceRange Range,
                                     unsigned AttrSpellingListIndex);
-  FormatAttr *mergeFormatAttr(Decl *D, SourceRange Range, StringRef Format,
-                              int FormatIdx, int FirstArg,
-                              unsigned AttrSpellingListIndex);
+  FormatAttr *mergeFormatAttr(Decl *D, SourceRange Range,
+                              IdentifierInfo *Format, int FormatIdx,
+                              int FirstArg, unsigned AttrSpellingListIndex);
   SectionAttr *mergeSectionAttr(Decl *D, SourceRange Range, StringRef Name,
                                 unsigned AttrSpellingListIndex);
 
@@ -1802,13 +1880,13 @@ public:
   void mergeDeclAttributes(NamedDecl *New, Decl *Old,
                            AvailabilityMergeKind AMK = AMK_Redeclaration);
   void MergeTypedefNameDecl(TypedefNameDecl *New, LookupResult &OldDecls);
-  bool MergeFunctionDecl(FunctionDecl *New, Decl *Old, Scope *S);
+  bool MergeFunctionDecl(FunctionDecl *New, Decl *Old, Scope *S,
+                         bool MergeTypeWithOld);
   bool MergeCompatibleFunctionDecls(FunctionDecl *New, FunctionDecl *Old,
-                                    Scope *S);
+                                    Scope *S, bool MergeTypeWithOld);
   void mergeObjCMethodDecls(ObjCMethodDecl *New, ObjCMethodDecl *Old);
-  void MergeVarDecl(VarDecl *New, LookupResult &OldDecls,
-                    bool OldDeclsWereHidden);
-  void MergeVarDeclTypes(VarDecl *New, VarDecl *Old, bool OldIsHidden);
+  void MergeVarDecl(VarDecl *New, LookupResult &Previous);
+  void MergeVarDeclTypes(VarDecl *New, VarDecl *Old, bool MergeTypeWithOld);
   void MergeVarDeclExceptionSpecs(VarDecl *New, VarDecl *Old);
   bool MergeCXXFunctionDecl(FunctionDecl *New, FunctionDecl *Old, Scope *S);
 
@@ -1821,7 +1899,8 @@ public:
     AA_Converting,
     AA_Initializing,
     AA_Sending,
-    AA_Casting
+    AA_Casting,
+    AA_Passing_CFAudited
   };
 
   /// C++ Overloading.
@@ -1920,65 +1999,91 @@ public:
 
   /// Contexts in which a converted constant expression is required.
   enum CCEKind {
-    CCEK_CaseValue,  ///< Expression in a case label.
-    CCEK_Enumerator, ///< Enumerator value with fixed underlying type.
-    CCEK_TemplateArg ///< Value of a non-type template parameter.
+    CCEK_CaseValue,   ///< Expression in a case label.
+    CCEK_Enumerator,  ///< Enumerator value with fixed underlying type.
+    CCEK_TemplateArg, ///< Value of a non-type template parameter.
+    CCEK_NewExpr      ///< Constant expression in a noptr-new-declarator.
   };
   ExprResult CheckConvertedConstantExpression(Expr *From, QualType T,
                                               llvm::APSInt &Value, CCEKind CCE);
 
-  /// \brief Abstract base class used to diagnose problems that occur while
-  /// trying to convert an expression to integral or enumeration type.
-  class ICEConvertDiagnoser {
+  /// \brief Abstract base class used to perform a contextual implicit
+  /// conversion from an expression to any type passing a filter.
+  class ContextualImplicitConverter {
   public:
     bool Suppress;
     bool SuppressConversion;
 
-    ICEConvertDiagnoser(bool Suppress = false,
-                        bool SuppressConversion = false)
-      : Suppress(Suppress), SuppressConversion(SuppressConversion) { }
+    ContextualImplicitConverter(bool Suppress = false,
+                                bool SuppressConversion = false)
+        : Suppress(Suppress), SuppressConversion(SuppressConversion) {}
+
+    /// \brief Determine whether the specified type is a valid destination type
+    /// for this conversion.
+    virtual bool match(QualType T) = 0;
 
     /// \brief Emits a diagnostic complaining that the expression does not have
     /// integral or enumeration type.
-    virtual DiagnosticBuilder diagnoseNotInt(Sema &S, SourceLocation Loc,
-                                             QualType T) = 0;
+    virtual SemaDiagnosticBuilder
+    diagnoseNoMatch(Sema &S, SourceLocation Loc, QualType T) = 0;
 
     /// \brief Emits a diagnostic when the expression has incomplete class type.
-    virtual DiagnosticBuilder diagnoseIncomplete(Sema &S, SourceLocation Loc,
-                                                 QualType T) = 0;
+    virtual SemaDiagnosticBuilder
+    diagnoseIncomplete(Sema &S, SourceLocation Loc, QualType T) = 0;
 
     /// \brief Emits a diagnostic when the only matching conversion function
     /// is explicit.
-    virtual DiagnosticBuilder diagnoseExplicitConv(Sema &S, SourceLocation Loc,
-                                                   QualType T,
-                                                   QualType ConvTy) = 0;
+    virtual SemaDiagnosticBuilder diagnoseExplicitConv(
+        Sema &S, SourceLocation Loc, QualType T, QualType ConvTy) = 0;
 
     /// \brief Emits a note for the explicit conversion function.
-    virtual DiagnosticBuilder
+    virtual SemaDiagnosticBuilder
     noteExplicitConv(Sema &S, CXXConversionDecl *Conv, QualType ConvTy) = 0;
 
     /// \brief Emits a diagnostic when there are multiple possible conversion
     /// functions.
-    virtual DiagnosticBuilder diagnoseAmbiguous(Sema &S, SourceLocation Loc,
-                                                QualType T) = 0;
+    virtual SemaDiagnosticBuilder
+    diagnoseAmbiguous(Sema &S, SourceLocation Loc, QualType T) = 0;
 
     /// \brief Emits a note for one of the candidate conversions.
-    virtual DiagnosticBuilder noteAmbiguous(Sema &S, CXXConversionDecl *Conv,
-                                            QualType ConvTy) = 0;
+    virtual SemaDiagnosticBuilder
+    noteAmbiguous(Sema &S, CXXConversionDecl *Conv, QualType ConvTy) = 0;
 
     /// \brief Emits a diagnostic when we picked a conversion function
     /// (for cases when we are not allowed to pick a conversion function).
-    virtual DiagnosticBuilder diagnoseConversion(Sema &S, SourceLocation Loc,
-                                                 QualType T,
-                                                 QualType ConvTy) = 0;
+    virtual SemaDiagnosticBuilder diagnoseConversion(
+        Sema &S, SourceLocation Loc, QualType T, QualType ConvTy) = 0;
 
-    virtual ~ICEConvertDiagnoser() {}
+    virtual ~ContextualImplicitConverter() {}
   };
 
-  ExprResult
-  ConvertToIntegralOrEnumerationType(SourceLocation Loc, Expr *FromE,
-                                     ICEConvertDiagnoser &Diagnoser,
-                                     bool AllowScopedEnumerations);
+  class ICEConvertDiagnoser : public ContextualImplicitConverter {
+    bool AllowScopedEnumerations;
+
+  public:
+    ICEConvertDiagnoser(bool AllowScopedEnumerations,
+                        bool Suppress, bool SuppressConversion)
+        : ContextualImplicitConverter(Suppress, SuppressConversion),
+          AllowScopedEnumerations(AllowScopedEnumerations) {}
+
+    /// Match an integral or (possibly scoped) enumeration type.
+    bool match(QualType T);
+
+    SemaDiagnosticBuilder
+    diagnoseNoMatch(Sema &S, SourceLocation Loc, QualType T) {
+      return diagnoseNotInt(S, Loc, T);
+    }
+
+    /// \brief Emits a diagnostic complaining that the expression does not have
+    /// integral or enumeration type.
+    virtual SemaDiagnosticBuilder
+    diagnoseNotInt(Sema &S, SourceLocation Loc, QualType T) = 0;
+  };
+
+  /// Perform a contextual implicit conversion.
+  ExprResult PerformContextualImplicitConversion(
+      SourceLocation Loc, Expr *FromE, ContextualImplicitConverter &Converter);
+
 
   enum ObjCSubscriptKind {
     OS_Array,
@@ -2054,12 +2159,14 @@ public:
                               DeclAccessPair FoundDecl,
                               CXXRecordDecl *ActingContext,
                               Expr *From, QualType ToType,
-                              OverloadCandidateSet& CandidateSet);
+                              OverloadCandidateSet& CandidateSet,
+                              bool AllowObjCConversionOnExplicit = false);
   void AddTemplateConversionCandidate(FunctionTemplateDecl *FunctionTemplate,
                                       DeclAccessPair FoundDecl,
                                       CXXRecordDecl *ActingContext,
                                       Expr *From, QualType ToType,
-                                      OverloadCandidateSet &CandidateSet);
+                                      OverloadCandidateSet &CandidateSet,
+                                    bool AllowObjCConversionOnExplicit = false);
   void AddSurrogateCandidate(CXXConversionDecl *Conversion,
                              DeclAccessPair FoundDecl,
                              CXXRecordDecl *ActingContext,
@@ -2159,14 +2266,13 @@ public:
   ExprResult BuildOverloadedCallExpr(Scope *S, Expr *Fn,
                                      UnresolvedLookupExpr *ULE,
                                      SourceLocation LParenLoc,
-                                     Expr **Args, unsigned NumArgs,
+                                     MultiExprArg Args,
                                      SourceLocation RParenLoc,
                                      Expr *ExecConfig,
                                      bool AllowTypoCorrection=true);
 
   bool buildOverloadedCallSet(Scope *S, Expr *Fn, UnresolvedLookupExpr *ULE,
-                              Expr **Args, unsigned NumArgs,
-                              SourceLocation RParenLoc,
+                              MultiExprArg Args, SourceLocation RParenLoc,
                               OverloadCandidateSet *CandidateSet,
                               ExprResult *Result);
 
@@ -2186,15 +2292,17 @@ public:
 
   ExprResult
   BuildCallToMemberFunction(Scope *S, Expr *MemExpr,
-                            SourceLocation LParenLoc, Expr **Args,
-                            unsigned NumArgs, SourceLocation RParenLoc);
+                            SourceLocation LParenLoc,
+                            MultiExprArg Args,
+                            SourceLocation RParenLoc);
   ExprResult
   BuildCallToObjectOfClassType(Scope *S, Expr *Object, SourceLocation LParenLoc,
-                               Expr **Args, unsigned NumArgs,
+                               MultiExprArg Args,
                                SourceLocation RParenLoc);
 
   ExprResult BuildOverloadedArrowExpr(Scope *S, Expr *Base,
-                                      SourceLocation OpLoc);
+                                      SourceLocation OpLoc,
+                                      bool *NoArrowOperatorFound = 0);
 
   /// CheckCallReturnType - Checks that a call expression's return type is
   /// complete. Returns true on failure. The location passed in is the location
@@ -2203,7 +2311,8 @@ public:
                            CallExpr *CE, FunctionDecl *FD);
 
   /// Helpers for dealing with blocks and functions.
-  bool CheckParmsForFunctionDef(ParmVarDecl **Param, ParmVarDecl **ParamEnd,
+  bool CheckParmsForFunctionDef(ParmVarDecl *const *Param,
+                                ParmVarDecl *const *ParamEnd,
                                 bool CheckParameterNames);
   void CheckCXXDefaultArguments(FunctionDecl *FD);
   void CheckExtraCXXDefaultArguments(Declarator &D);
@@ -2271,6 +2380,9 @@ public:
     /// are outside of the current scope unless they have linkage. See
     /// C99 6.2.2p4-5 and C++ [basic.link]p6.
     LookupRedeclarationWithLinkage,
+    /// Look up a friend of a local class. This lookup does not look
+    /// outside the innermost non-class scope. See C++11 [class.friend]p11.
+    LookupLocalFriendName,
     /// Look up the name of an Objective-C protocol.
     LookupObjCProtocolName,
     /// Look up implicit 'self' parameter of an objective-c method.
@@ -2303,7 +2415,11 @@ public:
     /// \brief The lookup found an overload set of literal operator templates,
     /// which expect the characters of the spelling of the literal token to be
     /// passed as a non-type template argument pack.
-    LOLR_Template
+    LOLR_Template,
+    /// \brief The lookup found an overload set of literal operator templates,
+    /// which expect the character type and characters of the spelling of the
+    /// string literal token to be passed as template arguments.
+    LOLR_StringTemplate
   };
 
   SpecialMemberOverloadResult *LookupSpecialMember(CXXRecordDecl *D,
@@ -2370,7 +2486,9 @@ public:
 
   LiteralOperatorLookupResult LookupLiteralOperator(Scope *S, LookupResult &R,
                                                     ArrayRef<QualType> ArgTys,
-                                                    bool AllowRawAndTemplate);
+                                                    bool AllowRaw,
+                                                    bool AllowTemplate,
+                                                    bool AllowStringTemplate);
   bool isKnownName(StringRef name);
 
   void ArgumentDependentLookup(DeclarationName Name, bool Operator,
@@ -2391,7 +2509,17 @@ public:
                              CorrectionCandidateCallback &CCC,
                              DeclContext *MemberContext = 0,
                              bool EnteringContext = false,
-                             const ObjCObjectPointerType *OPT = 0);
+                             const ObjCObjectPointerType *OPT = 0,
+                             bool RecordFailure = true);
+
+  void diagnoseTypo(const TypoCorrection &Correction,
+                    const PartialDiagnostic &TypoDiag,
+                    bool ErrorRecovery = true);
+
+  void diagnoseTypo(const TypoCorrection &Correction,
+                    const PartialDiagnostic &TypoDiag,
+                    const PartialDiagnostic &PrevNote,
+                    bool ErrorRecovery = true);
 
   void FindAssociatedClassesAndNamespaces(SourceLocation InstantiationLoc,
                                           ArrayRef<Expr *> Args,
@@ -2402,7 +2530,7 @@ public:
                             bool ConsiderLinkage,
                             bool ExplicitInstantiationOrSpecialization);
 
-  bool DiagnoseAmbiguousLookup(LookupResult &Result);
+  void DiagnoseAmbiguousLookup(LookupResult &Result);
   //@}
 
   ObjCInterfaceDecl *getObjCInterfaceDecl(IdentifierInfo *&Id,
@@ -2419,12 +2547,8 @@ public:
 
   void ProcessPragmaWeak(Scope *S, Decl *D);
   // Decl attributes - this routine is the top level dispatcher.
-  void ProcessDeclAttributes(Scope *S, Decl *D, const Declarator &PD,
-                             bool NonInheritable = true,
-                             bool Inheritable = true);
+  void ProcessDeclAttributes(Scope *S, Decl *D, const Declarator &PD);
   void ProcessDeclAttributeList(Scope *S, Decl *D, const AttributeList *AL,
-                                bool NonInheritable = true,
-                                bool Inheritable = true,
                                 bool IncludeCXX11Attributes = true);
   bool ProcessAccessDeclAttributeList(AccessSpecDecl *ASDecl,
                                       const AttributeList *AttrList);
@@ -2435,8 +2559,21 @@ public:
   bool CheckCallingConvAttr(const AttributeList &attr, CallingConv &CC, 
                             const FunctionDecl *FD = 0);
   bool CheckNoReturnAttr(const AttributeList &attr);
+  bool checkStringLiteralArgumentAttr(const AttributeList &Attr,
+                                      unsigned ArgNum, StringRef &Str,
+                                      SourceLocation *ArgLocation = 0);
+
   void CheckAlignasUnderalignment(Decl *D);
 
+  /// Adjust the calling convention of a method to be the ABI default if it
+  /// wasn't specified explicitly.  This handles method types formed from
+  /// function type typedefs and typename template arguments.
+  void adjustMemberFunctionCC(QualType &T, bool IsStatic);
+
+  /// Get the outermost AttributedType node that sets a calling convention.
+  /// Valid types should not have multiple attributes with different CCs.
+  const AttributedType *getCallingConvAttributedType(QualType T) const;
+
   /// \brief Stmt attributes - this routine is the top level dispatcher.
   StmtResult ProcessStmtAttributes(Stmt *Stmt, AttributeList *Attrs,
                                    SourceRange Range);
@@ -2457,9 +2594,6 @@ public:
                              ObjCMethodDecl *MethodDecl,
                              bool IsProtocolMethodDecl);
 
-  bool isPropertyReadonly(ObjCPropertyDecl *PropertyDecl,
-                          ObjCInterfaceDecl *IDecl);
-
   typedef llvm::SmallPtrSet<Selector, 8> SelectorSet;
   typedef llvm::DenseMap<Selector, ObjCMethodDecl*> ProtocolsMethodsMap;
 
@@ -2507,6 +2641,16 @@ public:
   bool IvarBacksCurrentMethodAccessor(ObjCInterfaceDecl *IFace,
                                       ObjCMethodDecl *Method, ObjCIvarDecl *IV);
   
+  /// DiagnoseUnusedBackingIvarInAccessor - Issue an 'unused' warning if ivar which
+  /// backs the property is not used in the property's accessor.
+  void DiagnoseUnusedBackingIvarInAccessor(Scope *S);
+  
+  /// GetIvarBackingPropertyAccessor - If method is a property setter/getter and
+  /// it property has a backing ivar, returns this ivar; otherwise, returns NULL.
+  /// It also returns ivar's property on success.
+  ObjCIvarDecl *GetIvarBackingPropertyAccessor(const ObjCMethodDecl *Method,
+                                               const ObjCPropertyDecl *&PDecl) const;
+  
   /// Called by ActOnProperty to handle \@property declarations in
   /// class extensions.
   ObjCPropertyDecl *HandlePropertyInClassExtension(Scope *S,
@@ -2592,6 +2736,17 @@ private:
                                            bool receiverIdOrClass,
                                            bool warn, bool instance);
 
+  /// \brief Record the typo correction failure and return an empty correction.
+  TypoCorrection FailedCorrection(IdentifierInfo *Typo, SourceLocation TypoLoc,
+                                  bool RecordFailure = true,
+                                  bool IsUnqualifiedLookup = false) {
+    if (IsUnqualifiedLookup)
+      (void)UnqualifiedTyposCorrected[Typo];
+    if (RecordFailure)
+      TypoCorrectionFailures[Typo].insert(TypoLoc);
+    return TypoCorrection();
+  }
+
 public:
   /// AddInstanceMethodToGlobalPool - All instance methods in a translation
   /// unit are added to a global pool. This allows us to efficiently associate
@@ -2628,6 +2783,14 @@ public:
                                     warn, /*instance*/false);
   }
 
+  const ObjCMethodDecl *SelectorsForTypoCorrection(Selector Sel,
+                              QualType ObjectType=QualType());
+  
+  /// DiagnoseMismatchedMethodsInGlobalPool - This routine goes through list of
+  /// methods in global pool and issues diagnostic on identical selectors which
+  /// have mismathched types.
+  void DiagnoseMismatchedMethodsInGlobalPool();
+  
   /// LookupImplementedMethodInGlobalPool - Returns the method which has an
   /// implementation.
   ObjCMethodDecl *LookupImplementedMethodInGlobalPool(Selector Sel);
@@ -2691,8 +2854,7 @@ public:
   void ActOnStartOfCompoundStmt();
   void ActOnFinishOfCompoundStmt();
   StmtResult ActOnCompoundStmt(SourceLocation L, SourceLocation R,
-                                       MultiStmtArg Elts,
-                                       bool isStmtExpr);
+                               ArrayRef<Stmt *> Elts, bool isStmtExpr);
 
   /// \brief A RAII object to enter scope of a compound statement.
   class CompoundScopeRAII {
@@ -2865,11 +3027,10 @@ public:
   StmtResult ActOnCXXCatchBlock(SourceLocation CatchLoc,
                                 Decl *ExDecl, Stmt *HandlerBlock);
   StmtResult ActOnCXXTryBlock(SourceLocation TryLoc, Stmt *TryBlock,
-                              MultiStmtArg Handlers);
+                              ArrayRef<Stmt *> Handlers);
 
   StmtResult ActOnSEHTryBlock(bool IsCXXTry, // try (true) or __try (false) ?
-                              SourceLocation TryLoc,
-                              Stmt *TryBlock,
+                              SourceLocation TryLoc, Stmt *TryBlock,
                               Stmt *Handler);
 
   StmtResult ActOnSEHExceptBlock(SourceLocation Loc,
@@ -2944,7 +3105,7 @@ public:
                                         ObjCMethodDecl *Getter,
                                         SourceLocation Loc);
   void DiagnoseSentinelCalls(NamedDecl *D, SourceLocation Loc,
-                             Expr **Args, unsigned NumArgs);
+                             ArrayRef<Expr *> Args);
 
   void PushExpressionEvaluationContext(ExpressionEvaluationContext NewContext,
                                        Decl *LambdaContextDecl = 0,
@@ -3006,12 +3167,19 @@ public:
   /// from within the current scope. Only valid when the variable can be
   /// captured.
   ///
+  /// \param FunctionScopeIndexToStopAt If non-null, it points to the index
+  /// of the FunctionScopeInfo stack beyond which we do not attempt to capture.
+  /// This is useful when enclosing lambdas must speculatively capture 
+  /// variables that may or may not be used in certain specializations of
+  /// a nested generic lambda.
+  /// 
   /// \returns true if an error occurred (i.e., the variable cannot be
   /// captured) and false if the capture succeeded.
   bool tryCaptureVariable(VarDecl *Var, SourceLocation Loc, TryCaptureKind Kind,
                           SourceLocation EllipsisLoc, bool BuildAndDiagnose,
                           QualType &CaptureType,
-                          QualType &DeclRefType);
+                          QualType &DeclRefType, 
+                          const unsigned *const FunctionScopeIndexToStopAt);
 
   /// \brief Try to capture the given variable.
   bool tryCaptureVariable(VarDecl *Var, SourceLocation Loc,
@@ -3034,8 +3202,8 @@ public:
                             bool (*IsPlausibleResult)(QualType) = 0);
 
   /// \brief Figure out if an expression could be turned into a call.
-  bool isExprCallable(const Expr &E, QualType &ZeroArgCallReturnTy,
-                      UnresolvedSetImpl &NonTemplateOverloads);
+  bool tryExprAsCall(Expr &E, QualType &ZeroArgCallReturnTy,
+                     UnresolvedSetImpl &NonTemplateOverloads);
 
   /// \brief Conditionally issue a diagnostic based on the current
   /// evaluation context.
@@ -3054,7 +3222,8 @@ public:
                                SourceLocation TemplateKWLoc,
                                UnqualifiedId &Id,
                                bool HasTrailingLParen, bool IsAddressOfOperand,
-                               CorrectionCandidateCallback *CCC = 0);
+                               CorrectionCandidateCallback *CCC = 0,
+                               bool IsInlineAsmIdentifier = false);
 
   void DecomposeUnqualifiedId(const UnqualifiedId &Id,
                               TemplateArgumentListInfo &Buffer,
@@ -3080,17 +3249,19 @@ public:
                               ExprValueKind VK,
                               SourceLocation Loc,
                               const CXXScopeSpec *SS = 0);
-  ExprResult BuildDeclRefExpr(ValueDecl *D, QualType Ty,
-                              ExprValueKind VK,
+  ExprResult BuildDeclRefExpr(ValueDecl *D, QualType Ty, ExprValueKind VK,
                               const DeclarationNameInfo &NameInfo,
-                              const CXXScopeSpec *SS = 0,
-                              NamedDecl *FoundD = 0);
+                              const CXXScopeSpec *SS = 0, NamedDecl *FoundD = 0,
+                              const TemplateArgumentListInfo *TemplateArgs = 0);
   ExprResult
-  BuildAnonymousStructUnionMemberReference(const CXXScopeSpec &SS,
-                                           SourceLocation nameLoc,
-                                           IndirectFieldDecl *indirectField,
-                                           Expr *baseObjectExpr = 0,
-                                      SourceLocation opLoc = SourceLocation());
+  BuildAnonymousStructUnionMemberReference(
+      const CXXScopeSpec &SS,
+      SourceLocation nameLoc,
+      IndirectFieldDecl *indirectField,
+      DeclAccessPair FoundDecl = DeclAccessPair::make(0, AS_none),
+      Expr *baseObjectExpr = 0,
+      SourceLocation opLoc = SourceLocation());
+
   ExprResult BuildPossibleImplicitMemberExpr(const CXXScopeSpec &SS,
                                              SourceLocation TemplateKWLoc,
                                              LookupResult &R,
@@ -3115,9 +3286,9 @@ public:
   ExprResult BuildDeclarationNameExpr(const CXXScopeSpec &SS,
                                       LookupResult &R,
                                       bool NeedsADL);
-  ExprResult BuildDeclarationNameExpr(const CXXScopeSpec &SS,
-                                      const DeclarationNameInfo &NameInfo,
-                                      NamedDecl *D, NamedDecl *FoundD = 0);
+  ExprResult BuildDeclarationNameExpr(
+      const CXXScopeSpec &SS, const DeclarationNameInfo &NameInfo, NamedDecl *D,
+      NamedDecl *FoundD = 0, const TemplateArgumentListInfo *TemplateArgs = 0);
 
   ExprResult BuildLiteralOperatorCall(LookupResult &R,
                                       DeclarationNameInfo &SuffixInfo,
@@ -3125,6 +3296,8 @@ public:
                                       SourceLocation LitEndLoc,
                             TemplateArgumentListInfo *ExplicitTemplateArgs = 0);
 
+  ExprResult BuildPredefinedExpr(SourceLocation Loc,
+                                 PredefinedExpr::IdentType IT);
   ExprResult ActOnPredefinedExpr(SourceLocation Loc, tok::TokenKind Kind);
   ExprResult ActOnIntegerConstant(SourceLocation Loc, uint64_t Val);
   ExprResult ActOnNumericConstant(const Token &Tok, Scope *UDLScope = 0);
@@ -3143,15 +3316,14 @@ public:
                                        SourceLocation DefaultLoc,
                                        SourceLocation RParenLoc,
                                        Expr *ControllingExpr,
-                                       MultiTypeArg ArgTypes,
-                                       MultiExprArg ArgExprs);
+                                       ArrayRef<ParsedType> ArgTypes,
+                                       ArrayRef<Expr *> ArgExprs);
   ExprResult CreateGenericSelectionExpr(SourceLocation KeyLoc,
                                         SourceLocation DefaultLoc,
                                         SourceLocation RParenLoc,
                                         Expr *ControllingExpr,
-                                        TypeSourceInfo **Types,
-                                        Expr **Exprs,
-                                        unsigned NumAssocs);
+                                        ArrayRef<TypeSourceInfo *> Types,
+                                        ArrayRef<Expr *> Exprs);
 
   // Binary/Unary Operators.  'Tok' is the token for the operator.
   ExprResult CreateBuiltinUnaryOp(SourceLocation OpLoc, UnaryOperatorKind Opc,
@@ -3161,6 +3333,8 @@ public:
   ExprResult ActOnUnaryOp(Scope *S, SourceLocation OpLoc,
                           tok::TokenKind Op, Expr *Input);
 
+  QualType CheckAddressOfOperand(ExprResult &Operand, SourceLocation OpLoc);
+
   ExprResult CreateUnaryExprOrTypeTraitExpr(TypeSourceInfo *TInfo,
                                             SourceLocation OpLoc,
                                             UnaryExprOrTypeTrait ExprKind,
@@ -3255,7 +3429,7 @@ public:
   bool ConvertArgumentsForCall(CallExpr *Call, Expr *Fn,
                                FunctionDecl *FDecl,
                                const FunctionProtoType *Proto,
-                               Expr **Args, unsigned NumArgs,
+                               ArrayRef<Expr *> Args,
                                SourceLocation RParenLoc,
                                bool ExecConfig = false);
   void CheckStaticArrayArgument(SourceLocation CallLoc,
@@ -3270,7 +3444,7 @@ public:
                            Expr *ExecConfig = 0, bool IsExecConfig = false);
   ExprResult BuildResolvedCallExpr(Expr *Fn, NamedDecl *NDecl,
                                    SourceLocation LParenLoc,
-                                   Expr **Args, unsigned NumArgs,
+                                   ArrayRef<Expr *> Arg,
                                    SourceLocation RParenLoc,
                                    Expr *Config = 0,
                                    bool IsExecConfig = false);
@@ -3431,6 +3605,13 @@ public:
   ExprResult ActOnBlockStmtExpr(SourceLocation CaretLoc, Stmt *Body,
                                 Scope *CurScope);
 
+  //===---------------------------- Clang Extensions ----------------------===//
+
+  /// __builtin_convertvector(...)
+  ExprResult ActOnConvertVectorExpr(Expr *E, ParsedType ParsedDestTy,
+                                    SourceLocation BuiltinLoc,
+                                    SourceLocation RParenLoc);
+
   //===---------------------------- OpenCL Features -----------------------===//
 
   /// __builtin_astype(...)
@@ -3488,12 +3669,14 @@ public:
 
   void HideUsingShadowDecl(Scope *S, UsingShadowDecl *Shadow);
   bool CheckUsingShadowDecl(UsingDecl *UD, NamedDecl *Target,
-                            const LookupResult &PreviousDecls);
+                            const LookupResult &PreviousDecls,
+                            UsingShadowDecl *&PrevShadow);
   UsingShadowDecl *BuildUsingShadowDecl(Scope *S, UsingDecl *UD,
-                                        NamedDecl *Target);
+                                        NamedDecl *Target,
+                                        UsingShadowDecl *PrevDecl);
 
   bool CheckUsingDeclRedeclaration(SourceLocation UsingLoc,
-                                   bool isTypeName,
+                                   bool HasTypenameKeyword,
                                    const CXXScopeSpec &SS,
                                    SourceLocation NameLoc,
                                    const LookupResult &Previous);
@@ -3507,7 +3690,7 @@ public:
                                    const DeclarationNameInfo &NameInfo,
                                    AttributeList *AttrList,
                                    bool IsInstantiation,
-                                   bool IsTypeName,
+                                   bool HasTypenameKeyword,
                                    SourceLocation TypenameLoc);
 
   bool CheckInheritingConstructorUsingDecl(UsingDecl *UD);
@@ -3519,7 +3702,7 @@ public:
                               CXXScopeSpec &SS,
                               UnqualifiedId &Name,
                               AttributeList *AttrList,
-                              bool IsTypeName,
+                              bool HasTypenameKeyword,
                               SourceLocation TypenameLoc);
   Decl *ActOnAliasDeclaration(Scope *CurScope,
                               AccessSpecifier AS,
@@ -3918,7 +4101,17 @@ public:
   ///
   /// \param Explicit Whether 'this' is explicitly captured in a lambda
   /// capture list.
-  void CheckCXXThisCapture(SourceLocation Loc, bool Explicit = false);
+  ///
+  /// \param FunctionScopeIndexToStopAt If non-null, it points to the index
+  /// of the FunctionScopeInfo stack beyond which we do not attempt to capture.
+  /// This is useful when enclosing lambdas must speculatively capture 
+  /// 'this' that may or may not be used in certain specializations of
+  /// a nested generic lambda (depending on whether the name resolves to 
+  /// a non-static member function or a static function).
+  /// \return returns 'true' if failed, 'false' if success.
+  bool CheckCXXThisCapture(SourceLocation Loc, bool Explicit = false, 
+      bool BuildAndDiagnose = true,
+      const unsigned *const FunctionScopeIndexToStopAt = 0);
 
   /// \brief Determine whether the given type is the type of *this that is used
   /// outside of the body of a member function for a type that is currently
@@ -3979,22 +4172,26 @@ public:
                           SourceRange R);
   bool FindAllocationFunctions(SourceLocation StartLoc, SourceRange Range,
                                bool UseGlobal, QualType AllocType, bool IsArray,
-                               Expr **PlaceArgs, unsigned NumPlaceArgs,
+                               MultiExprArg PlaceArgs,
                                FunctionDecl *&OperatorNew,
                                FunctionDecl *&OperatorDelete);
   bool FindAllocationOverload(SourceLocation StartLoc, SourceRange Range,
-                              DeclarationName Name, Expr** Args,
-                              unsigned NumArgs, DeclContext *Ctx,
+                              DeclarationName Name, MultiExprArg Args,
+                              DeclContext *Ctx,
                               bool AllowMissing, FunctionDecl *&Operator,
                               bool Diagnose = true);
   void DeclareGlobalNewDelete();
   void DeclareGlobalAllocationFunction(DeclarationName Name, QualType Return,
-                                       QualType Argument,
+                                       QualType Param1,
+                                       QualType Param2 = QualType(),
                                        bool addMallocAttr = false);
 
   bool FindDeallocationFunction(SourceLocation StartLoc, CXXRecordDecl *RD,
                                 DeclarationName Name, FunctionDecl* &Operator,
                                 bool Diagnose = true);
+  FunctionDecl *FindUsualDeallocationFunction(SourceLocation StartLoc,
+                                              bool CanProvideSize,
+                                              DeclarationName Name);
 
   /// ActOnCXXDelete - Parsed a C++ 'delete' expression
   ExprResult ActOnCXXDelete(SourceLocation StartLoc,
@@ -4120,7 +4317,8 @@ public:
   }
   ExprResult ActOnFinishFullExpr(Expr *Expr, SourceLocation CC,
                                  bool DiscardedValue = false,
-                                 bool IsConstexpr = false);
+                                 bool IsConstexpr = false,
+                                 bool IsLambdaInitCaptureInitializer = false);
   StmtResult ActOnFinishFullStmt(Stmt *Stmt);
 
   // Marks SS invalid if it represents an incomplete type.
@@ -4131,7 +4329,6 @@ public:
                                   bool EnteringContext = false);
   bool isDependentScopeSpecifier(const CXXScopeSpec &SS);
   CXXRecordDecl *getCurrentInstantiationOf(NestedNameSpecifier *NNS);
-  bool isUnknownSpecialization(const CXXScopeSpec &SS);
 
   /// \brief The parser has parsed a global nested-name-specifier '::'.
   ///
@@ -4296,7 +4493,8 @@ public:
   /// \brief Create a new lambda closure type.
   CXXRecordDecl *createLambdaClosureType(SourceRange IntroducerRange,
                                          TypeSourceInfo *Info,
-                                         bool KnownDependent);
+                                         bool KnownDependent, 
+                                         LambdaCaptureDefault CaptureDefault);
 
   /// \brief Start the definition of a lambda expression.
   CXXMethodDecl *startLambdaDefinition(CXXRecordDecl *Class,
@@ -4305,13 +4503,31 @@ public:
                                        SourceLocation EndLoc,
                                        ArrayRef<ParmVarDecl *> Params);
 
-  /// \brief Introduce the scope for a lambda expression.
-  sema::LambdaScopeInfo *enterLambdaScope(CXXMethodDecl *CallOperator,
-                                          SourceRange IntroducerRange,
-                                          LambdaCaptureDefault CaptureDefault,
-                                          bool ExplicitParams,
-                                          bool ExplicitResultType,
-                                          bool Mutable);
+  /// \brief Endow the lambda scope info with the relevant properties.
+  void buildLambdaScope(sema::LambdaScopeInfo *LSI, 
+                        CXXMethodDecl *CallOperator,
+                        SourceRange IntroducerRange,
+                        LambdaCaptureDefault CaptureDefault,
+                        SourceLocation CaptureDefaultLoc,
+                        bool ExplicitParams,
+                        bool ExplicitResultType,
+                        bool Mutable);
+
+  /// \brief Perform initialization analysis of the init-capture and perform
+  /// any implicit conversions such as an lvalue-to-rvalue conversion if
+  /// not being used to initialize a reference.
+  QualType performLambdaInitCaptureInitialization(SourceLocation Loc, 
+      bool ByRef, IdentifierInfo *Id, Expr *&Init);
+  /// \brief Create a dummy variable within the declcontext of the lambda's
+  ///  call operator, for name lookup purposes for a lambda init capture.
+  ///  
+  ///  CodeGen handles emission of lambda captures, ignoring these dummy
+  ///  variables appropriately.
+  VarDecl *createLambdaInitCaptureVarDecl(SourceLocation Loc, 
+    QualType InitCaptureType, IdentifierInfo *Id, Expr *Init);
+
+  /// \brief Build the implicit field for an init-capture.
+  FieldDecl *buildInitCaptureField(sema::LambdaScopeInfo *LSI, VarDecl *Var);
 
   /// \brief Note that we have finished the explicit captures for the
   /// given lambda.
@@ -4444,6 +4660,7 @@ public:
   //
   bool isCurrentClassName(const IdentifierInfo &II, Scope *S,
                           const CXXScopeSpec *SS = 0);
+  bool isCurrentClassNameTypo(IdentifierInfo *&II, const CXXScopeSpec *SS);
 
   bool ActOnAccessSpecifier(AccessSpecifier Access,
                             SourceLocation ASLoc,
@@ -4466,7 +4683,7 @@ public:
                                     const DeclSpec &DS,
                                     SourceLocation IdLoc,
                                     SourceLocation LParenLoc,
-                                    Expr **Args, unsigned NumArgs,
+                                    ArrayRef<Expr *> Args,
                                     SourceLocation RParenLoc,
                                     SourceLocation EllipsisLoc);
 
@@ -4590,7 +4807,9 @@ public:
   void ActOnFinishDelayedMemberDeclarations(Scope *S, Decl *Record);
   void ActOnFinishDelayedCXXMethodDeclaration(Scope *S, Decl *Method);
   void ActOnFinishDelayedMemberInitializers(Decl *Record);
-  void MarkAsLateParsedTemplate(FunctionDecl *FD, bool Flag = true);
+  void MarkAsLateParsedTemplate(FunctionDecl *FD, Decl *FnD,
+                                CachedTokens &Toks);
+  void UnmarkAsLateParsedTemplate(FunctionDecl *FD);
   bool IsInsideALocalClassWithinATemplateFunction();
 
   Decl *ActOnStaticAssertDeclaration(SourceLocation StaticAssertLoc,
@@ -4624,7 +4843,7 @@ public:
   void CheckExplicitlyDefaultedSpecialMember(CXXMethodDecl *MD);
   void CheckExplicitlyDefaultedMemberExceptionSpec(CXXMethodDecl *MD,
                                                    const FunctionProtoType *T);
-  void CheckDelayedExplicitlyDefaultedMemberExceptionSpecs();
+  void CheckDelayedMemberExceptionSpecs();
 
   //===--------------------------------------------------------------------===//
   // C++ Derived Classes
@@ -4687,7 +4906,7 @@ public:
   bool CheckPureMethod(CXXMethodDecl *Method, SourceRange InitRange);
 
   /// CheckOverrideControl - Check C++11 override control semantics.
-  void CheckOverrideControl(Decl *D);
+  void CheckOverrideControl(NamedDecl *D);
 
   /// CheckForFunctionMarkedFinal - Checks whether a virtual member function
   /// overrides a virtual member function marked 'final', according to
@@ -4735,6 +4954,9 @@ public:
                                      const PartialDiagnostic &PDiag,
                                      QualType objectType = QualType());
   AccessResult CheckFriendAccess(NamedDecl *D);
+  AccessResult CheckMemberAccess(SourceLocation UseLoc,
+                                 CXXRecordDecl *NamingClass,
+                                 DeclAccessPair Found);
   AccessResult CheckMemberOperatorAccess(SourceLocation Loc,
                                          Expr *ObjectExpr,
                                          Expr *ArgExpr,
@@ -4771,6 +4993,7 @@ public:
     AbstractVariableType,
     AbstractFieldType,
     AbstractIvarType,
+    AbstractSynthesizedIvarType,
     AbstractArrayType
   };
 
@@ -4878,12 +5101,13 @@ public:
                              Decl **Params, unsigned NumParams,
                              SourceLocation RAngleLoc);
 
-  /// \brief The context in which we are checking a template parameter
-  /// list.
+  /// \brief The context in which we are checking a template parameter list.
   enum TemplateParamListContext {
     TPC_ClassTemplate,
+    TPC_VarTemplate,
     TPC_FunctionTemplate,
     TPC_ClassTemplateMember,
+    TPC_FriendClassTemplate,
     TPC_FriendFunctionTemplate,
     TPC_FriendFunctionTemplateDefinition,
     TPC_TypeAliasTemplate
@@ -4892,15 +5116,10 @@ public:
   bool CheckTemplateParameterList(TemplateParameterList *NewParams,
                                   TemplateParameterList *OldParams,
                                   TemplateParamListContext TPC);
-  TemplateParameterList *
-  MatchTemplateParametersToScopeSpecifier(SourceLocation DeclStartLoc,
-                                          SourceLocation DeclLoc,
-                                          const CXXScopeSpec &SS,
-                                          TemplateParameterList **ParamLists,
-                                          unsigned NumParamLists,
-                                          bool IsFriend,
-                                          bool &IsExplicitSpecialization,
-                                          bool &Invalid);
+  TemplateParameterList *MatchTemplateParametersToScopeSpecifier(
+      SourceLocation DeclStartLoc, SourceLocation DeclLoc,
+      const CXXScopeSpec &SS, ArrayRef<TemplateParameterList *> ParamLists,
+      bool IsFriend, bool &IsExplicitSpecialization, bool &Invalid);
 
   DeclResult CheckClassTemplate(Scope *S, unsigned TagSpec, TagUseKind TUK,
                                 SourceLocation KWLoc, CXXScopeSpec &SS,
@@ -4942,6 +5161,21 @@ public:
                                     ASTTemplateArgsPtr TemplateArgsIn,
                                     SourceLocation RAngleLoc);
 
+  DeclResult ActOnVarTemplateSpecialization(
+      Scope *S, VarTemplateDecl *VarTemplate, Declarator &D, TypeSourceInfo *DI,
+      SourceLocation TemplateKWLoc, TemplateParameterList *TemplateParams,
+      StorageClass SC, bool IsPartialSpecialization);
+
+  DeclResult CheckVarTemplateId(VarTemplateDecl *Template,
+                                SourceLocation TemplateLoc,
+                                SourceLocation TemplateNameLoc,
+                                const TemplateArgumentListInfo &TemplateArgs);
+
+  ExprResult CheckVarTemplateId(const CXXScopeSpec &SS,
+                                const DeclarationNameInfo &NameInfo,
+                                VarTemplateDecl *Template,
+                                SourceLocation TemplateLoc,
+                                const TemplateArgumentListInfo *TemplateArgs);
 
   ExprResult BuildTemplateIdExpr(const CXXScopeSpec &SS,
                                  SourceLocation TemplateKWLoc,
@@ -5035,7 +5269,9 @@ public:
                                           SourceLocation TemplateLoc,
                                           SourceLocation RAngleLoc,
                                           Decl *Param,
-                          SmallVectorImpl<TemplateArgument> &Converted);
+                                          SmallVectorImpl<TemplateArgument>
+                                            &Converted,
+                                          bool &HasDefaultArg);
 
   /// \brief Specifies the context in which a particular template
   /// argument is being checked.
@@ -5289,7 +5525,7 @@ public:
 
     /// \brief Block expression,
     UPPC_Block
-};
+  };
 
   /// \brief Diagnose unexpanded parameter packs.
   ///
@@ -5538,10 +5774,25 @@ public:
   /// false otherwise.
   bool containsUnexpandedParameterPacks(Declarator &D);
 
+  /// \brief Returns the pattern of the pack expansion for a template argument.
+  ///
+  /// \param OrigLoc The template argument to expand.
+  ///
+  /// \param Ellipsis Will be set to the location of the ellipsis.
+  ///
+  /// \param NumExpansions Will be set to the number of expansions that will
+  /// be generated from this pack expansion, if known a priori.
+  TemplateArgumentLoc getTemplateArgumentPackExpansionPattern(
+      TemplateArgumentLoc OrigLoc,
+      SourceLocation &Ellipsis,
+      Optional<unsigned> &NumExpansions) const;
+
   //===--------------------------------------------------------------------===//
   // C++ Template Argument Deduction (C++ [temp.deduct])
   //===--------------------------------------------------------------------===//
 
+  QualType adjustCCAndNoReturn(QualType ArgFunctionType, QualType FunctionType);
+
   /// \brief Describes the result of template argument deduction.
   ///
   /// The TemplateDeductionResult enumeration describes the result of
@@ -5598,12 +5849,16 @@ public:
                           sema::TemplateDeductionInfo &Info);
 
   TemplateDeductionResult
-  SubstituteExplicitTemplateArguments(FunctionTemplateDecl *FunctionTemplate,
-                              TemplateArgumentListInfo &ExplicitTemplateArgs,
-                      SmallVectorImpl<DeducedTemplateArgument> &Deduced,
-                                 SmallVectorImpl<QualType> &ParamTypes,
-                                      QualType *FunctionType,
-                                      sema::TemplateDeductionInfo &Info);
+  DeduceTemplateArguments(VarTemplatePartialSpecializationDecl *Partial,
+                          const TemplateArgumentList &TemplateArgs,
+                          sema::TemplateDeductionInfo &Info);
+
+  TemplateDeductionResult SubstituteExplicitTemplateArguments(
+      FunctionTemplateDecl *FunctionTemplate,
+      TemplateArgumentListInfo &ExplicitTemplateArgs,
+      SmallVectorImpl<DeducedTemplateArgument> &Deduced,
+      SmallVectorImpl<QualType> &ParamTypes, QualType *FunctionType,
+      sema::TemplateDeductionInfo &Info);
 
   /// brief A function argument from which we performed template argument
   // deduction for a call.
@@ -5655,6 +5910,12 @@ public:
                           sema::TemplateDeductionInfo &Info,
                           bool InOverloadResolution = false);
 
+  /// \brief Substitute Replacement for \p auto in \p TypeWithAuto
+  QualType SubstAutoType(QualType TypeWithAuto, QualType Replacement);
+  /// \brief Substitute Replacement for auto in TypeWithAuto
+  TypeSourceInfo* SubstAutoTypeSourceInfo(TypeSourceInfo *TypeWithAuto, 
+                                          QualType Replacement);
+
   /// \brief Result type of DeduceAutoType.
   enum DeduceAutoResult {
     DAR_Succeeded,
@@ -5666,7 +5927,6 @@ public:
                                   QualType &Result);
   DeduceAutoResult DeduceAutoType(TypeLoc AutoTypeLoc, Expr *&Initializer,
                                   QualType &Result);
-  QualType SubstAutoType(QualType TypeWithAuto, QualType Replacement);
   void DiagnoseAutoDeductionFailure(VarDecl *VDecl, Expr *Init);
   bool DeduceReturnType(FunctionDecl *FD, SourceLocation Loc,
                         bool Diagnose = true);
@@ -5679,17 +5939,16 @@ public:
                                                    FunctionTemplateDecl *FT2,
                                                    SourceLocation Loc,
                                            TemplatePartialOrderingContext TPOC,
-                                                   unsigned NumCallArguments);
-  UnresolvedSetIterator getMostSpecialized(UnresolvedSetIterator SBegin,
-                                           UnresolvedSetIterator SEnd,
-                                           TemplatePartialOrderingContext TPOC,
-                                           unsigned NumCallArguments,
-                                           SourceLocation Loc,
-                                           const PartialDiagnostic &NoneDiag,
-                                           const PartialDiagnostic &AmbigDiag,
-                                        const PartialDiagnostic &CandidateDiag,
-                                        bool Complain = true,
-                                        QualType TargetType = QualType());
+                                                   unsigned NumCallArguments1,
+                                                   unsigned NumCallArguments2);
+  UnresolvedSetIterator
+  getMostSpecialized(UnresolvedSetIterator SBegin, UnresolvedSetIterator SEnd,
+                     TemplateSpecCandidateSet &FailedCandidates,
+                     SourceLocation Loc,
+                     const PartialDiagnostic &NoneDiag,
+                     const PartialDiagnostic &AmbigDiag,
+                     const PartialDiagnostic &CandidateDiag,
+                     bool Complain = true, QualType TargetType = QualType());
 
   ClassTemplatePartialSpecializationDecl *
   getMoreSpecializedPartialSpecialization(
@@ -5697,6 +5956,10 @@ public:
                                   ClassTemplatePartialSpecializationDecl *PS2,
                                   SourceLocation Loc);
 
+  VarTemplatePartialSpecializationDecl *getMoreSpecializedPartialSpecialization(
+      VarTemplatePartialSpecializationDecl *PS1,
+      VarTemplatePartialSpecializationDecl *PS2, SourceLocation Loc);
+
   void MarkUsedTemplateParameters(const TemplateArgumentList &TemplateArgs,
                                   bool OnlyDeduced,
                                   unsigned Depth,
@@ -5814,10 +6077,7 @@ public:
 
       case PriorTemplateArgumentSubstitution:
       case DefaultTemplateArgumentChecking:
-        if (X.Template != Y.Template)
-          return false;
-
-        // Fall through
+        return X.Template == Y.Template && X.TemplateArgs == Y.TemplateArgs;
 
       case DefaultTemplateArgumentInstantiation:
       case ExplicitTemplateArgumentSubstitution:
@@ -5845,6 +6105,20 @@ public:
   SmallVector<ActiveTemplateInstantiation, 16>
     ActiveTemplateInstantiations;
 
+  /// \brief Extra modules inspected when performing a lookup during a template
+  /// instantiation. Computed lazily.
+  SmallVector<Module*, 16> ActiveTemplateInstantiationLookupModules;
+
+  /// \brief Cache of additional modules that should be used for name lookup
+  /// within the current template instantiation. Computed lazily; use
+  /// getLookupModules() to get a complete set.
+  llvm::DenseSet<Module*> LookupModulesCache;
+
+  /// \brief Get the set of additional modules that should be checked during
+  /// name lookup. A module and its imports become visible when instanting a
+  /// template defined within it.
+  llvm::DenseSet<Module*> &getLookupModules();
+
   /// \brief Whether we are in a SFINAE context that is not associated with
   /// template instantiation.
   ///
@@ -5906,8 +6180,9 @@ public:
   /// deduction.
   ///
   /// FIXME: Serialize this structure to the AST file.
-  llvm::DenseMap<Decl *, SmallVector<PartialDiagnosticAt, 1> >
-    SuppressedDiagnostics;
+  typedef llvm::DenseMap<Decl *, SmallVector<PartialDiagnosticAt, 1> >
+    SuppressedDiagnosticsMap;
+  SuppressedDiagnosticsMap SuppressedDiagnostics;
 
   /// \brief A stack object to be created when performing template
   /// instantiation.
@@ -5959,6 +6234,15 @@ public:
                           sema::TemplateDeductionInfo &DeductionInfo,
                           SourceRange InstantiationRange = SourceRange());
 
+    /// \brief Note that we are instantiating as part of template
+    /// argument deduction for a variable template partial
+    /// specialization.
+    InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation,
+                          VarTemplatePartialSpecializationDecl *PartialSpec,
+                          ArrayRef<TemplateArgument> TemplateArgs,
+                          sema::TemplateDeductionInfo &DeductionInfo,
+                          SourceRange InstantiationRange = SourceRange());
+
     InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation,
                           ParmVarDecl *Param,
                           ArrayRef<TemplateArgument> TemplateArgs,
@@ -5994,7 +6278,7 @@ public:
 
     /// \brief Determines whether we have exceeded the maximum
     /// recursive template instantiations.
-    operator bool() const { return Invalid; }
+    bool isInvalid() const { return Invalid; }
 
   private:
     Sema &SemaRef;
@@ -6031,7 +6315,7 @@ public:
 
   /// \brief RAII class used to determine whether SFINAE has
   /// trapped any errors that occur during template argument
-  /// deduction.`
+  /// deduction.
   class SFINAETrap {
     Sema &SemaRef;
     unsigned PrevSFINAEErrors;
@@ -6063,10 +6347,34 @@ public:
     }
   };
 
+  /// \brief RAII class used to indicate that we are performing provisional
+  /// semantic analysis to determine the validity of a construct, so
+  /// typo-correction and diagnostics in the immediate context (not within
+  /// implicitly-instantiated templates) should be suppressed.
+  class TentativeAnalysisScope {
+    Sema &SemaRef;
+    // FIXME: Using a SFINAETrap for this is a hack.
+    SFINAETrap Trap;
+    bool PrevDisableTypoCorrection;
+  public:
+    explicit TentativeAnalysisScope(Sema &SemaRef)
+        : SemaRef(SemaRef), Trap(SemaRef, true),
+          PrevDisableTypoCorrection(SemaRef.DisableTypoCorrection) {
+      SemaRef.DisableTypoCorrection = true;
+    }
+    ~TentativeAnalysisScope() {
+      SemaRef.DisableTypoCorrection = PrevDisableTypoCorrection;
+    }
+  };
+
   /// \brief The current instantiation scope used to store local
   /// variables.
   LocalInstantiationScope *CurrentInstantiationScope;
 
+  /// \brief Tracks whether we are in a context where typo correction is
+  /// disabled.
+  bool DisableTypoCorrection;
+
   /// \brief The number of typos corrected by CorrectTypo.
   unsigned TyposCorrected;
 
@@ -6081,6 +6389,14 @@ public:
   /// string represents a keyword.
   UnqualifiedTyposCorrectedMap UnqualifiedTyposCorrected;
 
+  typedef llvm::SmallSet<SourceLocation, 2> SrcLocSet;
+  typedef llvm::DenseMap<IdentifierInfo *, SrcLocSet> IdentifierSourceLocations;
+
+  /// \brief A cache containing identifiers for which typo correction failed and
+  /// their locations, so that repeated attempts to correct an identifier in a
+  /// given location are ignored if typo correction already failed for it.
+  IdentifierSourceLocations TypoCorrectionFailures;
+
   /// \brief Worker object for performing CFG-based warnings.
   sema::AnalysisBasedWarnings AnalysisWarnings;
 
@@ -6107,6 +6423,26 @@ public:
   /// types, static variables, enumerators, etc.
   std::deque<PendingImplicitInstantiation> PendingLocalImplicitInstantiations;
 
+  class SavePendingLocalImplicitInstantiationsRAII {
+  public:
+    SavePendingLocalImplicitInstantiationsRAII(Sema &S): S(S) {
+      SavedPendingLocalImplicitInstantiations.swap(
+          S.PendingLocalImplicitInstantiations);
+    }
+
+    ~SavePendingLocalImplicitInstantiationsRAII() {
+      assert(S.PendingLocalImplicitInstantiations.empty() &&
+             "there shouldn't be any pending local implicit instantiations");
+      SavedPendingLocalImplicitInstantiations.swap(
+          S.PendingLocalImplicitInstantiations);
+    }
+
+  private:
+    Sema &S;
+    std::deque<PendingImplicitInstantiation>
+    SavedPendingLocalImplicitInstantiations;
+  };
+
   void PerformPendingInstantiations(bool LocalOnly = false);
 
   TypeSourceInfo *SubstType(TypeSourceInfo *T,
@@ -6240,6 +6576,30 @@ public:
                                      FunctionDecl *Function,
                                      bool Recursive = false,
                                      bool DefinitionRequired = false);
+  VarTemplateSpecializationDecl *BuildVarTemplateInstantiation(
+      VarTemplateDecl *VarTemplate, VarDecl *FromVar,
+      const TemplateArgumentList &TemplateArgList,
+      const TemplateArgumentListInfo &TemplateArgsInfo,
+      SmallVectorImpl<TemplateArgument> &Converted,
+      SourceLocation PointOfInstantiation, void *InsertPos,
+      LateInstantiatedAttrVec *LateAttrs = 0,
+      LocalInstantiationScope *StartingScope = 0);
+  VarTemplateSpecializationDecl *CompleteVarTemplateSpecializationDecl(
+      VarTemplateSpecializationDecl *VarSpec, VarDecl *PatternDecl,
+      const MultiLevelTemplateArgumentList &TemplateArgs);
+  void
+  BuildVariableInstantiation(VarDecl *NewVar, VarDecl *OldVar,
+                             const MultiLevelTemplateArgumentList &TemplateArgs,
+                             LateInstantiatedAttrVec *LateAttrs,
+                             DeclContext *Owner,
+                             LocalInstantiationScope *StartingScope,
+                             bool InstantiatingVarTemplate = false);
+  void InstantiateVariableInitializer(
+      VarDecl *Var, VarDecl *OldVar,
+      const MultiLevelTemplateArgumentList &TemplateArgs);
+  void InstantiateVariableDefinition(SourceLocation PointOfInstantiation,
+                                     VarDecl *Var, bool Recursive = false,
+                                     bool DefinitionRequired = false);
   void InstantiateStaticDataMemberDefinition(
                                      SourceLocation PointOfInstantiation,
                                      VarDecl *Var,
@@ -6277,6 +6637,10 @@ public:
                                  const SourceLocation *ProtoLocs,
                                  SourceLocation EndProtoLoc,
                                  AttributeList *AttrList);
+  
+  void ActOnTypedefedProtocols(SmallVectorImpl<Decl *> &ProtocolRefs,
+                               IdentifierInfo *SuperName,
+                               SourceLocation SuperLoc);
 
   Decl *ActOnCompatibilityAlias(
                     SourceLocation AtCompatibilityAliasLoc,
@@ -6359,18 +6723,15 @@ public:
 
   void DiagnosePropertyMismatch(ObjCPropertyDecl *Property,
                                 ObjCPropertyDecl *SuperProperty,
-                                const IdentifierInfo *Name);
+                                const IdentifierInfo *Name,
+                                bool OverridingProtocolProperty);
 
   void DiagnoseClassExtensionDupMethods(ObjCCategoryDecl *CAT,
                                         ObjCInterfaceDecl *ID);
 
-  void MatchOneProtocolPropertiesInClass(Decl *CDecl,
-                                         ObjCProtocolDecl *PDecl);
-
   Decl *ActOnAtEnd(Scope *S, SourceRange AtEnd,
-                   Decl **allMethods = 0, unsigned allNum = 0,
-                   Decl **allProperties = 0, unsigned pNum = 0,
-                   DeclGroupPtrTy *allTUVars = 0, unsigned tuvNum = 0);
+                   ArrayRef<Decl *> allMethods = None,
+                   ArrayRef<DeclGroupPtrTy> allTUVars = None);
 
   Decl *ActOnProperty(Scope *S, SourceLocation AtLoc,
                       SourceLocation LParenLoc,
@@ -6584,6 +6945,15 @@ public:
     PMSST_ON    // #pragms ms_struct on
   };
 
+  enum PragmaMSCommentKind {
+    PCK_Unknown,
+    PCK_Linker,   // #pragma comment(linker, ...)
+    PCK_Lib,      // #pragma comment(lib, ...)
+    PCK_Compiler, // #pragma comment(compiler, ...)
+    PCK_ExeStr,   // #pragma comment(exestr, ...)
+    PCK_User      // #pragma comment(user, ...)
+  };
+
   /// ActOnPragmaPack - Called on well formed \#pragma pack(...).
   void ActOnPragmaPack(PragmaPackKind Kind,
                        IdentifierInfo *Name,
@@ -6595,6 +6965,13 @@ public:
   /// ActOnPragmaMSStruct - Called on well formed \#pragma ms_struct [on|off].
   void ActOnPragmaMSStruct(PragmaMSStructKind Kind);
 
+  /// ActOnPragmaMSComment - Called on well formed
+  /// \#pragma comment(kind, "arg").
+  void ActOnPragmaMSComment(PragmaMSCommentKind Kind, StringRef Arg);
+
+  /// ActOnPragmaDetectMismatch - Call on well-formed \#pragma detect_mismatch
+  void ActOnPragmaDetectMismatch(StringRef Name, StringRef Value);
+
   /// ActOnPragmaUnused - Called on well-formed '\#pragma unused'.
   void ActOnPragmaUnused(const Token &Identifier,
                          Scope *curScope,
@@ -6670,16 +7047,79 @@ public:
                       unsigned SpellingListIndex, bool IsPackExpansion);
 
   // OpenMP directives and clauses.
+private:
+  void *VarDataSharingAttributesStack;
+  /// \brief Initialization of data-sharing attributes stack.
+  void InitDataSharingAttributesStack();
+  void DestroyDataSharingAttributesStack();
+public:
+  /// \brief Called on start of new data sharing attribute block.
+  void StartOpenMPDSABlock(OpenMPDirectiveKind K,
+                           const DeclarationNameInfo &DirName,
+                           Scope *CurScope);
+  /// \brief Called on end of data sharing attribute block.
+  void EndOpenMPDSABlock(Stmt *CurDirective);
 
+  // OpenMP directives and clauses.
+  /// \brief Called on correct id-expression from the '#pragma omp
+  /// threadprivate'.
+  ExprResult ActOnOpenMPIdExpression(Scope *CurScope,
+                                     CXXScopeSpec &ScopeSpec,
+                                     const DeclarationNameInfo &Id);
   /// \brief Called on well-formed '#pragma omp threadprivate'.
   DeclGroupPtrTy ActOnOpenMPThreadprivateDirective(
-                        SourceLocation Loc,
-                        Scope *CurScope,
-                        ArrayRef<DeclarationNameInfo> IdList);
-  /// \brief Build a new OpenMPThreadPrivateDecl and check its correctness.
+                                     SourceLocation Loc,
+                                     ArrayRef<Expr *> VarList);
+  // \brief Builds a new OpenMPThreadPrivateDecl and checks its correctness.
   OMPThreadPrivateDecl *CheckOMPThreadPrivateDecl(
-                        SourceLocation Loc,
-                        ArrayRef<DeclRefExpr *> VarList);
+                                     SourceLocation Loc,
+                                     ArrayRef<Expr *> VarList);
+
+  StmtResult ActOnOpenMPExecutableDirective(OpenMPDirectiveKind Kind,
+                                            ArrayRef<OMPClause *> Clauses,
+                                            Stmt *AStmt,
+                                            SourceLocation StartLoc,
+                                            SourceLocation EndLoc);
+  /// \brief Called on well-formed '\#pragma omp parallel' after parsing
+  /// of the  associated statement.
+  StmtResult ActOnOpenMPParallelDirective(ArrayRef<OMPClause *> Clauses,
+                                          Stmt *AStmt,
+                                          SourceLocation StartLoc,
+                                          SourceLocation EndLoc);
+
+  OMPClause *ActOnOpenMPSimpleClause(OpenMPClauseKind Kind,
+                                     unsigned Argument,
+                                     SourceLocation ArgumentLoc,
+                                     SourceLocation StartLoc,
+                                     SourceLocation LParenLoc,
+                                     SourceLocation EndLoc);
+  /// \brief Called on well-formed 'default' clause.
+  OMPClause *ActOnOpenMPDefaultClause(OpenMPDefaultClauseKind Kind,
+                                      SourceLocation KindLoc,
+                                      SourceLocation StartLoc,
+                                      SourceLocation LParenLoc,
+                                      SourceLocation EndLoc);
+
+  OMPClause *ActOnOpenMPVarListClause(OpenMPClauseKind Kind,
+                                      ArrayRef<Expr *> Vars,
+                                      SourceLocation StartLoc,
+                                      SourceLocation LParenLoc,
+                                      SourceLocation EndLoc);
+  /// \brief Called on well-formed 'private' clause.
+  OMPClause *ActOnOpenMPPrivateClause(ArrayRef<Expr *> VarList,
+                                      SourceLocation StartLoc,
+                                      SourceLocation LParenLoc,
+                                      SourceLocation EndLoc);
+  /// \brief Called on well-formed 'firstprivate' clause.
+  OMPClause *ActOnOpenMPFirstprivateClause(ArrayRef<Expr *> VarList,
+                                           SourceLocation StartLoc,
+                                           SourceLocation LParenLoc,
+                                           SourceLocation EndLoc);
+  /// \brief Called on well-formed 'shared' clause.
+  OMPClause *ActOnOpenMPSharedClause(ArrayRef<Expr *> VarList,
+                                     SourceLocation StartLoc,
+                                     SourceLocation LParenLoc,
+                                     SourceLocation EndLoc);
 
   /// \brief The kind of conversion being performed.
   enum CheckedConversionKind {
@@ -6753,20 +7193,25 @@ public:
   enum VarArgKind {
     VAK_Valid,
     VAK_ValidInCXX11,
+    VAK_Undefined,
     VAK_Invalid
   };
 
   // Determines which VarArgKind fits an expression.
   VarArgKind isValidVarArgType(const QualType &Ty);
 
+  /// Check to see if the given expression is a valid argument to a variadic
+  /// function, issuing a diagnostic if not.
+  void checkVariadicArgument(const Expr *E, VariadicCallType CT);
+
   /// GatherArgumentsForCall - Collector argument expressions for various
   /// form of call prototypes.
   bool GatherArgumentsForCall(SourceLocation CallLoc,
                               FunctionDecl *FDecl,
                               const FunctionProtoType *Proto,
                               unsigned FirstProtoArg,
-                              Expr **Args, unsigned NumArgs,
-                              SmallVector<Expr *, 8> &AllArgs,
+                              ArrayRef<Expr *> Args,
+                              SmallVectorImpl<Expr *> &AllArgs,
                               VariadicCallType CallType = VariadicDoesNotApply,
                               bool AllowExplicit = false,
                               bool IsListInitialization = false);
@@ -6776,10 +7221,6 @@ public:
   ExprResult DefaultVariadicArgumentPromotion(Expr *E, VariadicCallType CT,
                                               FunctionDecl *FDecl);
 
-  /// Checks to see if the given expression is a valid argument to a variadic
-  /// function, issuing a diagnostic and returning NULL if not.
-  bool variadicArgumentPODCheck(const Expr *E, VariadicCallType CT);
-
   // UsualArithmeticConversions - performs the UsualUnaryConversions on it's
   // operands and then handles various conversions that are common to binary
   // operators (C99 6.3.1.8). If both operands aren't arithmetic, this
@@ -6892,7 +7333,8 @@ public:
   // this routine performs the default function/array converions.
   AssignConvertType CheckSingleAssignmentConstraints(QualType LHSType,
                                                      ExprResult &RHS,
-                                                     bool Diagnose = true);
+                                                     bool Diagnose = true,
+                                                     bool DiagnoseCFAudited = false);
 
   // \brief If the lhs type is a transparent union, check whether we
   // can initialize the transparent union with the given expression.
@@ -7071,7 +7513,8 @@ public:
   /// retainable pointers and other pointer kinds.
   ARCConversionResult CheckObjCARCConversion(SourceRange castRange,
                                              QualType castType, Expr *&op,
-                                             CheckedConversionKind CCK);
+                                             CheckedConversionKind CCK,
+                                             bool DiagnoseCFAudited = false);
 
   Expr *stripARCUnbridgedCast(Expr *e);
   void diagnoseARCUnbridgedCast(Expr *e);
@@ -7098,7 +7541,7 @@ public:
   /// \param [out] ReturnType - The return type of the send.
   /// \return true iff there were any incompatible types.
   bool CheckMessageArgumentTypes(QualType ReceiverType,
-                                 Expr **Args, unsigned NumArgs, Selector Sel,
+                                 MultiExprArg Args, Selector Sel,
                                  ArrayRef<SourceLocation> SelectorLocs,
                                  ObjCMethodDecl *Method, bool isClassMessage,
                                  bool isSuperMessage,
@@ -7186,8 +7629,8 @@ public:
   /// Returns false on success.
   /// Can optionally return whether the bit-field is of width 0
   ExprResult VerifyBitField(SourceLocation FieldLoc, IdentifierInfo *FieldName,
-                            QualType FieldTy, Expr *BitWidth,
-                            bool *ZeroWidth = 0);
+                            QualType FieldTy, bool IsMsStruct,
+                            Expr *BitWidth, bool *ZeroWidth = 0);
 
   enum CUDAFunctionTarget {
     CFT_Device,
@@ -7284,9 +7727,10 @@ public:
   void CodeCompleteNamespaceDecl(Scope *S);
   void CodeCompleteNamespaceAliasDecl(Scope *S);
   void CodeCompleteOperatorName(Scope *S);
-  void CodeCompleteConstructorInitializer(Decl *Constructor,
-                                          CXXCtorInitializer** Initializers,
-                                          unsigned NumInitializers);
+  void CodeCompleteConstructorInitializer(
+                                Decl *Constructor,
+                                ArrayRef<CXXCtorInitializer *> Initializers);
+
   void CodeCompleteLambdaIntroducer(Scope *S, LambdaIntroducer &Intro,
                                     bool AfterAmpersand);
 
@@ -7301,24 +7745,20 @@ public:
                                    bool IsParameter);
   void CodeCompleteObjCMessageReceiver(Scope *S);
   void CodeCompleteObjCSuperMessage(Scope *S, SourceLocation SuperLoc,
-                                    IdentifierInfo **SelIdents,
-                                    unsigned NumSelIdents,
+                                    ArrayRef<IdentifierInfo *> SelIdents,
                                     bool AtArgumentExpression);
   void CodeCompleteObjCClassMessage(Scope *S, ParsedType Receiver,
-                                    IdentifierInfo **SelIdents,
-                                    unsigned NumSelIdents,
+                                    ArrayRef<IdentifierInfo *> SelIdents,
                                     bool AtArgumentExpression,
                                     bool IsSuper = false);
   void CodeCompleteObjCInstanceMessage(Scope *S, Expr *Receiver,
-                                       IdentifierInfo **SelIdents,
-                                       unsigned NumSelIdents,
+                                       ArrayRef<IdentifierInfo *> SelIdents,
                                        bool AtArgumentExpression,
                                        ObjCInterfaceDecl *Super = 0);
   void CodeCompleteObjCForCollection(Scope *S,
                                      DeclGroupPtrTy IterationVar);
   void CodeCompleteObjCSelector(Scope *S,
-                                IdentifierInfo **SelIdents,
-                                unsigned NumSelIdents);
+                                ArrayRef<IdentifierInfo *> SelIdents);
   void CodeCompleteObjCProtocolReferences(IdentifierLocPair *Protocols,
                                           unsigned NumProtocols);
   void CodeCompleteObjCProtocolDecl(Scope *S);
@@ -7343,8 +7783,7 @@ public:
                                           bool IsInstanceMethod,
                                           bool AtParameterName,
                                           ParsedType ReturnType,
-                                          IdentifierInfo **SelIdents,
-                                          unsigned NumSelIdents);
+                                          ArrayRef<IdentifierInfo *> SelIdents);
   void CodeCompletePreprocessorDirective(bool InConditional);
   void CodeCompleteInPreprocessorConditionalExclusion(Scope *S);
   void CodeCompletePreprocessorMacroName(bool IsDefinition);
@@ -7385,8 +7824,9 @@ private:
                          const FunctionProtoType *Proto);
   bool CheckObjCMethodCall(ObjCMethodDecl *Method, SourceLocation loc,
                            ArrayRef<const Expr *> Args);
-  bool CheckBlockCall(NamedDecl *NDecl, CallExpr *TheCall,
-                      const FunctionProtoType *Proto);
+  bool CheckPointerCall(NamedDecl *NDecl, CallExpr *TheCall,
+                        const FunctionProtoType *Proto);
+  bool CheckOtherCall(CallExpr *TheCall, const FunctionProtoType *Proto);
   void CheckConstructorCall(FunctionDecl *FDecl,
                             ArrayRef<const Expr *> Args,
                             const FunctionProtoType *Proto,
@@ -7401,7 +7841,10 @@ private:
   bool CheckObjCString(Expr *Arg);
 
   ExprResult CheckBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall);
+
+  bool CheckARMBuiltinExclusiveCall(unsigned BuiltinID, CallExpr *TheCall);
   bool CheckARMBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall);
+  bool CheckAArch64BuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall);
   bool CheckMipsBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall);
 
   bool SemaBuiltinVAStart(CallExpr *TheCall);
@@ -7411,6 +7854,9 @@ private:
 public:
   // Used by C++ template instantiation.
   ExprResult SemaBuiltinShuffleVector(CallExpr *TheCall);
+  ExprResult SemaConvertVectorExpr(Expr *E, TypeSourceInfo *TInfo,
+                                   SourceLocation BuiltinLoc,
+                                   SourceLocation RParenLoc);
 
 private:
   bool SemaBuiltinPrefetch(CallExpr *TheCall);
@@ -7422,6 +7868,7 @@ private:
   bool SemaBuiltinConstantArg(CallExpr *TheCall, int ArgNum,
                               llvm::APSInt &Result);
 
+public:
   enum FormatStringType {
     FST_Scanf,
     FST_Printf,
@@ -7433,37 +7880,26 @@ private:
   };
   static FormatStringType GetFormatStringType(const FormatAttr *Format);
 
-  enum StringLiteralCheckType {
-    SLCT_NotALiteral,
-    SLCT_UncheckedLiteral,
-    SLCT_CheckedLiteral
-  };
-
-  StringLiteralCheckType checkFormatStringExpr(const Expr *E,
-                                               ArrayRef<const Expr *> Args,
-                                               bool HasVAListArg,
-                                               unsigned format_idx,
-                                               unsigned firstDataArg,
-                                               FormatStringType Type,
-                                               VariadicCallType CallType,
-                                               bool inFunctionCall = true);
-
   void CheckFormatString(const StringLiteral *FExpr, const Expr *OrigFormatExpr,
                          ArrayRef<const Expr *> Args, bool HasVAListArg,
                          unsigned format_idx, unsigned firstDataArg,
                          FormatStringType Type, bool inFunctionCall,
-                         VariadicCallType CallType);
+                         VariadicCallType CallType,
+                         llvm::SmallBitVector &CheckedVarArgs);
 
+private:
   bool CheckFormatArguments(const FormatAttr *Format,
                             ArrayRef<const Expr *> Args,
                             bool IsCXXMember,
                             VariadicCallType CallType,
-                            SourceLocation Loc, SourceRange Range);
+                            SourceLocation Loc, SourceRange Range,
+                            llvm::SmallBitVector &CheckedVarArgs);
   bool CheckFormatArguments(ArrayRef<const Expr *> Args,
                             bool HasVAListArg, unsigned format_idx,
                             unsigned firstDataArg, FormatStringType Type,
                             VariadicCallType CallType,
-                            SourceLocation Loc, SourceRange range);
+                            SourceLocation Loc, SourceRange range,
+                            llvm::SmallBitVector &CheckedVarArgs);
 
   void CheckNonNullArguments(const NonNullAttr *NonNull,
                              const Expr * const *ExprArgs,
@@ -7536,6 +7972,7 @@ private:
   Scope *CurScope;
 
   mutable IdentifierInfo *Ident_super;
+  mutable IdentifierInfo *Ident___float128;
 
 protected:
   friend class Parser;
@@ -7555,6 +7992,7 @@ public:
   Scope *getCurScope() const { return CurScope; }
 
   IdentifierInfo *getSuperIdentifier() const;
+  IdentifierInfo *getFloat128Identifier() const;
 
   Decl *getObjCDeclContext() const;
 
@@ -7601,6 +8039,18 @@ public:
   }
 };
 
-}  // end namespace clang
+DeductionFailureInfo
+MakeDeductionFailureInfo(ASTContext &Context, Sema::TemplateDeductionResult TDK,
+                         sema::TemplateDeductionInfo &Info);
+
+/// \brief Contains a late templated function.
+/// Will be parsed at the end of the translation unit, used by Sema & Parser.
+struct LateParsedTemplate {
+  CachedTokens Toks;
+  /// \brief The template function declaration to be late parsed.
+  Decl *D;
+};
+
+} // end namespace clang
 
 #endif
diff --git a/include/clang/Sema/SemaDiagnostic.h b/include/clang/Sema/SemaDiagnostic.h
index 9605bf889a31..fdf959305151 100644
--- a/include/clang/Sema/SemaDiagnostic.h
+++ b/include/clang/Sema/SemaDiagnostic.h
@@ -16,7 +16,7 @@ namespace clang {
   namespace diag {
     enum {
 #define DIAG(ENUM,FLAGS,DEFAULT_MAPPING,DESC,GROUP,\
-             SFINAE,ACCESS,NOWERROR,SHOWINSYSHEADER,CATEGORY) ENUM,
+             SFINAE,NOWERROR,SHOWINSYSHEADER,CATEGORY) ENUM,
 #define SEMASTART
 #include "clang/Basic/DiagnosticSemaKinds.inc"
 #undef DIAG
diff --git a/include/clang/Sema/SemaInternal.h b/include/clang/Sema/SemaInternal.h
index bbf42721ba6d..01d4cc9679ef 100644
--- a/include/clang/Sema/SemaInternal.h
+++ b/include/clang/Sema/SemaInternal.h
@@ -24,7 +24,44 @@ namespace clang {
 inline PartialDiagnostic Sema::PDiag(unsigned DiagID) {
   return PartialDiagnostic(DiagID, Context.getDiagAllocator());
 }
-
+

+

+// This requires the variable to be non-dependent and the initializer

+// to not be value dependent.

+inline bool IsVariableAConstantExpression(VarDecl *Var, ASTContext &Context) {

+  const VarDecl *DefVD = 0;

+  return !isa<ParmVarDecl>(Var) &&

+    Var->isUsableInConstantExpressions(Context) &&

+    Var->getAnyInitializer(DefVD) && DefVD->checkInitIsICE(); 

+}

+

+// Directly mark a variable odr-used. Given a choice, prefer to use 

+// MarkVariableReferenced since it does additional checks and then 

+// calls MarkVarDeclODRUsed.

+// If the variable must be captured:

+//  - if FunctionScopeIndexToStopAt is null, capture it in the CurContext

+//  - else capture it in the DeclContext that maps to the 

+//    *FunctionScopeIndexToStopAt on the FunctionScopeInfo stack.  

+inline void MarkVarDeclODRUsed(VarDecl *Var,

+    SourceLocation Loc, Sema &SemaRef,

+    const unsigned *const FunctionScopeIndexToStopAt) {

+  // Keep track of used but undefined variables.

+  // FIXME: We shouldn't suppress this warning for static data members.

+  if (Var->hasDefinition(SemaRef.Context) == VarDecl::DeclarationOnly &&

+    !Var->isExternallyVisible() &&

+    !(Var->isStaticDataMember() && Var->hasInit())) {

+      SourceLocation &old = SemaRef.UndefinedButUsed[Var->getCanonicalDecl()];

+      if (old.isInvalid()) old = Loc;

+  }

+  QualType CaptureType, DeclRefType;

+  SemaRef.tryCaptureVariable(Var, Loc, Sema::TryCapture_Implicit, 

+    /*EllipsisLoc*/ SourceLocation(),

+    /*BuildAndDiagnose*/ true, 

+    CaptureType, DeclRefType, 

+    FunctionScopeIndexToStopAt);

+

+  Var->markUsed(SemaRef.Context);

+}
 }
 
 #endif
diff --git a/include/clang/Sema/SemaLambda.h b/include/clang/Sema/SemaLambda.h
new file mode 100644
index 000000000000..cf9fff1f1a2a
--- /dev/null
+++ b/include/clang/Sema/SemaLambda.h
@@ -0,0 +1,39 @@
+//===--- SemaLambda.h - Lambda Helper Functions --------------*- C++ -*-===//

+//

+//                     The LLVM Compiler Infrastructure

+//

+// This file is distributed under the University of Illinois Open Source

+// License. See LICENSE.TXT for details.

+//

+//===----------------------------------------------------------------------===//

+///

+/// \file

+/// \brief This file provides some common utility functions for processing

+/// Lambdas.

+///

+//===----------------------------------------------------------------------===//

+

+#ifndef LLVM_CLANG_SEMA_LAMBDA_H

+#define LLVM_CLANG_SEMA_LAMBDA_H

+#include "clang/AST/ASTLambda.h"

+#include "clang/Sema/ScopeInfo.h"

+namespace clang {

+ 

+// Given a lambda's call operator and a variable (or null for 'this'), 

+// compute the nearest enclosing lambda that is capture-ready (i.e 

+// the enclosing context is not dependent, and all intervening lambdas can 

+// either implicitly or explicitly capture Var)

+// 

+// Return the CallOperator of the capturable lambda and set function scope 

+// index to the correct index within the function scope stack to correspond 

+// to the capturable lambda.

+// If VarDecl *VD is null, we check for 'this' capture.

+CXXMethodDecl* 

+GetInnermostEnclosingCapturableLambda( 

+    ArrayRef<sema::FunctionScopeInfo*> FunctionScopes,

+    unsigned &FunctionScopeIndex,

+    DeclContext *const CurContext, VarDecl *VD, Sema &S);

+

+} // clang

+

+#endif // LLVM_CLANG_SEMA_LAMBDA_H

diff --git a/include/clang/Sema/Template.h b/include/clang/Sema/Template.h
index f9481c6c0c20..1af61d5abd61 100644
--- a/include/clang/Sema/Template.h
+++ b/include/clang/Sema/Template.h
@@ -97,13 +97,6 @@ namespace clang {
       addOuterTemplateArguments(ArgList(TemplateArgs->data(),
                                         TemplateArgs->size()));
     }
-    
-    /// \brief Add a new outmost level to the multi-level template argument
-    /// list.
-    void addOuterTemplateArguments(const TemplateArgument *Args, 
-                                   unsigned NumArgs) {
-      addOuterTemplateArguments(ArgList(Args, NumArgs));
-    }
 
     /// \brief Add a new outmost level to the multi-level template argument
     /// list.
@@ -385,6 +378,14 @@ namespace clang {
                                 ClassTemplatePartialSpecializationDecl *>, 4>
       OutOfLinePartialSpecs;
 
+    /// \brief A list of out-of-line variable template partial
+    /// specializations that will need to be instantiated after the
+    /// enclosing variable's instantiation is complete.
+    /// FIXME: Verify that this is needed.
+    SmallVector<
+        std::pair<VarTemplateDecl *, VarTemplatePartialSpecializationDecl *>, 4>
+    OutOfLineVarPartialSpecs;
+
   public:
     TemplateDeclInstantiator(Sema &SemaRef, DeclContext *Owner,
                              const MultiLevelTemplateArgumentList &TemplateArgs)
@@ -393,62 +394,39 @@ namespace clang {
         Owner(Owner), TemplateArgs(TemplateArgs), LateAttrs(0), StartingScope(0)
     { }
 
-    // FIXME: Once we get closer to completion, replace these manually-written
-    // declarations with automatically-generated ones from
-    // clang/AST/DeclNodes.inc.
-    Decl *VisitTranslationUnitDecl(TranslationUnitDecl *D);
-    Decl *VisitLabelDecl(LabelDecl *D);
-    Decl *VisitNamespaceDecl(NamespaceDecl *D);
-    Decl *VisitNamespaceAliasDecl(NamespaceAliasDecl *D);
-    Decl *VisitTypedefDecl(TypedefDecl *D);
-    Decl *VisitTypeAliasDecl(TypeAliasDecl *D);
-    Decl *VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D);
-    Decl *VisitVarDecl(VarDecl *D);
-    Decl *VisitAccessSpecDecl(AccessSpecDecl *D);
-    Decl *VisitFieldDecl(FieldDecl *D);
-    Decl *VisitMSPropertyDecl(MSPropertyDecl *D);
-    Decl *VisitIndirectFieldDecl(IndirectFieldDecl *D);
-    Decl *VisitStaticAssertDecl(StaticAssertDecl *D);
-    Decl *VisitEnumDecl(EnumDecl *D);
-    Decl *VisitEnumConstantDecl(EnumConstantDecl *D);
-    Decl *VisitFriendDecl(FriendDecl *D);
-    Decl *VisitFunctionDecl(FunctionDecl *D,
-                            TemplateParameterList *TemplateParams = 0);
-    Decl *VisitCXXRecordDecl(CXXRecordDecl *D);
+// Define all the decl visitors using DeclNodes.inc
+#define DECL(DERIVED, BASE) \
+    Decl *Visit ## DERIVED ## Decl(DERIVED ## Decl *D);
+#define ABSTRACT_DECL(DECL)
+
+// Decls which never appear inside a class or function.
+#define OBJCCONTAINER(DERIVED, BASE)
+#define FILESCOPEASM(DERIVED, BASE)
+#define IMPORT(DERIVED, BASE)
+#define LINKAGESPEC(DERIVED, BASE)
+#define OBJCCOMPATIBLEALIAS(DERIVED, BASE)
+#define OBJCMETHOD(DERIVED, BASE)
+#define OBJCIVAR(DERIVED, BASE)
+#define OBJCPROPERTY(DERIVED, BASE)
+#define OBJCPROPERTYIMPL(DERIVED, BASE)
+#define EMPTY(DERIVED, BASE)
+
+// Decls which use special-case instantiation code.
+#define BLOCK(DERIVED, BASE)
+#define CAPTURED(DERIVED, BASE)
+#define IMPLICITPARAM(DERIVED, BASE)
+
+#include "clang/AST/DeclNodes.inc"
+
+    // A few supplemental visitor functions.
     Decl *VisitCXXMethodDecl(CXXMethodDecl *D,
-                             TemplateParameterList *TemplateParams = 0,
+                             TemplateParameterList *TemplateParams,
                              bool IsClassScopeSpecialization = false);
-    Decl *VisitCXXConstructorDecl(CXXConstructorDecl *D);
-    Decl *VisitCXXDestructorDecl(CXXDestructorDecl *D);
-    Decl *VisitCXXConversionDecl(CXXConversionDecl *D);
-    ParmVarDecl *VisitParmVarDecl(ParmVarDecl *D);
-    Decl *VisitClassTemplateDecl(ClassTemplateDecl *D);
-    Decl *VisitClassTemplatePartialSpecializationDecl(
-                                    ClassTemplatePartialSpecializationDecl *D);
-    Decl *VisitFunctionTemplateDecl(FunctionTemplateDecl *D);
-    Decl *VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D);
-    Decl *VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D);
-    Decl *VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D);
-    Decl *VisitUsingDirectiveDecl(UsingDirectiveDecl *D);
-    Decl *VisitUsingDecl(UsingDecl *D);
-    Decl *VisitUsingShadowDecl(UsingShadowDecl *D);
-    Decl *VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D);
-    Decl *VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D);
-    Decl *VisitClassScopeFunctionSpecializationDecl(
-                                      ClassScopeFunctionSpecializationDecl *D);
-    Decl *VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D);
-
-    // Base case. FIXME: Remove once we can instantiate everything.
-    Decl *VisitDecl(Decl *D) {
-      unsigned DiagID = SemaRef.getDiagnostics().getCustomDiagID(
-                                                   DiagnosticsEngine::Error,
-                                                   "cannot instantiate %0 yet");
-      SemaRef.Diag(D->getLocation(), DiagID)
-        << D->getDeclKindName();
-      
-      return 0;
-    }
-    
+    Decl *VisitFunctionDecl(FunctionDecl *D,
+                            TemplateParameterList *TemplateParams);
+    Decl *VisitDecl(Decl *D);
+    Decl *VisitVarDecl(VarDecl *D, bool InstantiatingVarTemplate);
+
     // Enable late instantiation of attributes.  Late instantiated attributes
     // will be stored in LA.
     void enableLateAttributeInstantiation(Sema::LateInstantiatedAttrVec *LA) {
@@ -470,6 +448,10 @@ namespace clang {
         ::iterator
       delayed_partial_spec_iterator;
 
+    typedef SmallVectorImpl<std::pair<
+        VarTemplateDecl *, VarTemplatePartialSpecializationDecl *> >::iterator
+    delayed_var_partial_spec_iterator;
+
     /// \brief Return an iterator to the beginning of the set of
     /// "delayed" partial specializations, which must be passed to
     /// InstantiateClassTemplatePartialSpecialization once the class
@@ -478,6 +460,10 @@ namespace clang {
       return OutOfLinePartialSpecs.begin();
     }
 
+    delayed_var_partial_spec_iterator delayed_var_partial_spec_begin() {
+      return OutOfLineVarPartialSpecs.begin();
+    }
+
     /// \brief Return an iterator to the end of the set of
     /// "delayed" partial specializations, which must be passed to
     /// InstantiateClassTemplatePartialSpecialization once the class
@@ -486,6 +472,10 @@ namespace clang {
       return OutOfLinePartialSpecs.end();
     }
 
+    delayed_var_partial_spec_iterator delayed_var_partial_spec_end() {
+      return OutOfLineVarPartialSpecs.end();
+    }
+
     // Helper functions for instantiating methods.
     TypeSourceInfo *SubstFunctionType(FunctionDecl *D,
                              SmallVectorImpl<ParmVarDecl *> &Params);
@@ -499,12 +489,21 @@ namespace clang {
                         DeclaratorDecl *NewDecl);
     bool SubstQualifier(const TagDecl *OldDecl,
                         TagDecl *NewDecl);
-      
+
+    Decl *VisitVarTemplateSpecializationDecl(
+        VarTemplateDecl *VarTemplate, VarDecl *FromVar, void *InsertPos,
+        const TemplateArgumentListInfo &TemplateArgsInfo,
+        llvm::ArrayRef<TemplateArgument> Converted);
+
     Decl *InstantiateTypedefNameDecl(TypedefNameDecl *D, bool IsTypeAlias);
     ClassTemplatePartialSpecializationDecl *
     InstantiateClassTemplatePartialSpecialization(
                                               ClassTemplateDecl *ClassTemplate,
                            ClassTemplatePartialSpecializationDecl *PartialSpec);
+    VarTemplatePartialSpecializationDecl *
+    InstantiateVarTemplatePartialSpecialization(
+        VarTemplateDecl *VarTemplate,
+        VarTemplatePartialSpecializationDecl *PartialSpec);
     void InstantiateEnumDefinition(EnumDecl *Enum, EnumDecl *Pattern);
   };  
 }
diff --git a/include/clang/Sema/TemplateDeduction.h b/include/clang/Sema/TemplateDeduction.h
index 8292045fdb91..1daa6891ed12 100644
--- a/include/clang/Sema/TemplateDeduction.h
+++ b/include/clang/Sema/TemplateDeduction.h
@@ -20,6 +20,7 @@
 namespace clang {
 
 class TemplateArgumentList;
+class Sema;
 
 namespace sema {
 
@@ -162,7 +163,124 @@ public:
   Expr *Expression;
 };
 
-}
-}
+} // end namespace sema
+
+/// A structure used to record information about a failed
+/// template argument deduction, for diagnosis.
+struct DeductionFailureInfo {
+  /// A Sema::TemplateDeductionResult.
+  unsigned Result : 8;
+
+  /// \brief Indicates whether a diagnostic is stored in Diagnostic.
+  unsigned HasDiagnostic : 1;
+
+  /// \brief Opaque pointer containing additional data about
+  /// this deduction failure.
+  void *Data;
+
+  /// \brief A diagnostic indicating why deduction failed.
+  union {
+    void *Align;
+    char Diagnostic[sizeof(PartialDiagnosticAt)];
+  };
+
+  /// \brief Retrieve the diagnostic which caused this deduction failure,
+  /// if any.
+  PartialDiagnosticAt *getSFINAEDiagnostic();
+
+  /// \brief Retrieve the template parameter this deduction failure
+  /// refers to, if any.
+  TemplateParameter getTemplateParameter();
+
+  /// \brief Retrieve the template argument list associated with this
+  /// deduction failure, if any.
+  TemplateArgumentList *getTemplateArgumentList();
+
+  /// \brief Return the first template argument this deduction failure
+  /// refers to, if any.
+  const TemplateArgument *getFirstArg();
+
+  /// \brief Return the second template argument this deduction failure
+  /// refers to, if any.
+  const TemplateArgument *getSecondArg();
+
+  /// \brief Return the expression this deduction failure refers to,
+  /// if any.
+  Expr *getExpr();
+
+  /// \brief Free any memory associated with this deduction failure.
+  void Destroy();
+};
+
+/// TemplateSpecCandidate - This is a generalization of OverloadCandidate
+/// which keeps track of template argument deduction failure info, when
+/// handling explicit specializations (and instantiations) of templates
+/// beyond function overloading.
+/// For now, assume that the candidates are non-matching specializations.
+/// TODO: In the future, we may need to unify/generalize this with
+/// OverloadCandidate.
+struct TemplateSpecCandidate {
+  /// Specialization - The actual specialization that this candidate
+  /// represents. When NULL, this may be a built-in candidate.
+  Decl *Specialization;
+
+  /// Template argument deduction info
+  DeductionFailureInfo DeductionFailure;
+
+  void set(Decl *Spec, DeductionFailureInfo Info) {
+    Specialization = Spec;
+    DeductionFailure = Info;
+  }
+
+  /// Diagnose a template argument deduction failure.
+  void NoteDeductionFailure(Sema &S);
+};
+
+/// TemplateSpecCandidateSet - A set of generalized overload candidates,
+/// used in template specializations.
+/// TODO: In the future, we may need to unify/generalize this with
+/// OverloadCandidateSet.
+class TemplateSpecCandidateSet {
+  SmallVector<TemplateSpecCandidate, 16> Candidates;
+  SourceLocation Loc;
+
+  TemplateSpecCandidateSet(
+      const TemplateSpecCandidateSet &) LLVM_DELETED_FUNCTION;
+  void operator=(const TemplateSpecCandidateSet &) LLVM_DELETED_FUNCTION;
+
+  void destroyCandidates();
+
+public:
+  TemplateSpecCandidateSet(SourceLocation Loc) : Loc(Loc) {}
+  ~TemplateSpecCandidateSet() { destroyCandidates(); }
+
+  SourceLocation getLocation() const { return Loc; }
+
+  /// \brief Clear out all of the candidates.
+  /// TODO: This may be unnecessary.
+  void clear();
+
+  typedef SmallVector<TemplateSpecCandidate, 16>::iterator iterator;
+  iterator begin() { return Candidates.begin(); }
+  iterator end() { return Candidates.end(); }
+
+  size_t size() const { return Candidates.size(); }
+  bool empty() const { return Candidates.empty(); }
+
+  /// \brief Add a new candidate with NumConversions conversion sequence slots
+  /// to the overload set.
+  TemplateSpecCandidate &addCandidate() {
+    Candidates.push_back(TemplateSpecCandidate());
+    return Candidates.back();
+  }
+
+  void NoteCandidates(Sema &S, SourceLocation Loc);
+
+  void NoteCandidates(Sema &S, SourceLocation Loc) const {
+    const_cast<TemplateSpecCandidateSet *>(this)->NoteCandidates(S, Loc);
+  }
+};
+
+} // end namespace clang
 
 #endif
diff --git a/include/clang/Sema/TypoCorrection.h b/include/clang/Sema/TypoCorrection.h
index cdd71c8fa9aa..f0b772649847 100644
--- a/include/clang/Sema/TypoCorrection.h
+++ b/include/clang/Sema/TypoCorrection.h
@@ -39,31 +39,35 @@ public:
   static const unsigned CallbackDistanceWeight = 150U;
 
   TypoCorrection(const DeclarationName &Name, NamedDecl *NameDecl,
-                 NestedNameSpecifier *NNS=0, unsigned CharDistance=0,
-                 unsigned QualifierDistance=0)
+                 NestedNameSpecifier *NNS = 0, unsigned CharDistance = 0,
+                 unsigned QualifierDistance = 0)
       : CorrectionName(Name), CorrectionNameSpec(NNS),
-      CharDistance(CharDistance), QualifierDistance(QualifierDistance),
-      CallbackDistance(0) {
+        CharDistance(CharDistance), QualifierDistance(QualifierDistance),
+        CallbackDistance(0), ForceSpecifierReplacement(false),
+        RequiresImport(false) {
     if (NameDecl)
       CorrectionDecls.push_back(NameDecl);
   }
 
-  TypoCorrection(NamedDecl *Name, NestedNameSpecifier *NNS=0,
-                 unsigned CharDistance=0)
+  TypoCorrection(NamedDecl *Name, NestedNameSpecifier *NNS = 0,
+                 unsigned CharDistance = 0)
       : CorrectionName(Name->getDeclName()), CorrectionNameSpec(NNS),
-      CharDistance(CharDistance), QualifierDistance(0), CallbackDistance(0) {
+        CharDistance(CharDistance), QualifierDistance(0), CallbackDistance(0),
+        ForceSpecifierReplacement(false), RequiresImport(false) {
     if (Name)
       CorrectionDecls.push_back(Name);
   }
 
-  TypoCorrection(DeclarationName Name, NestedNameSpecifier *NNS=0,
-                 unsigned CharDistance=0)
+  TypoCorrection(DeclarationName Name, NestedNameSpecifier *NNS = 0,
+                 unsigned CharDistance = 0)
       : CorrectionName(Name), CorrectionNameSpec(NNS),
-      CharDistance(CharDistance), QualifierDistance(0), CallbackDistance(0) {}
+        CharDistance(CharDistance), QualifierDistance(0), CallbackDistance(0),
+        ForceSpecifierReplacement(false), RequiresImport(false) {}
 
   TypoCorrection()
       : CorrectionNameSpec(0), CharDistance(0), QualifierDistance(0),
-      CallbackDistance(0) {}
+        CallbackDistance(0), ForceSpecifierReplacement(false),
+        RequiresImport(false) {}
 
   /// \brief Gets the DeclarationName of the typo correction
   DeclarationName getCorrection() const { return CorrectionName; }
@@ -77,6 +81,15 @@ public:
   }
   void setCorrectionSpecifier(NestedNameSpecifier* NNS) {
     CorrectionNameSpec = NNS;
+    ForceSpecifierReplacement = (NNS != 0);
+  }
+
+  void WillReplaceSpecifier(bool ForceReplacement) {
+    ForceSpecifierReplacement = ForceReplacement;
+  }
+
+  bool WillReplaceSpecifier() const {
+    return ForceSpecifierReplacement;
   }
 
   void setQualifierDistance(unsigned ED) {
@@ -116,20 +129,31 @@ public:
   }
 
   /// \brief Gets the pointer to the declaration of the typo correction
-  NamedDecl* getCorrectionDecl() const {
+  NamedDecl *getCorrectionDecl() const {
     return hasCorrectionDecl() ? *(CorrectionDecls.begin()) : 0;
   }
   template <class DeclClass>
   DeclClass *getCorrectionDeclAs() const {
     return dyn_cast_or_null<DeclClass>(getCorrectionDecl());
   }
-  
+
+  /// \brief Clears the list of NamedDecls.
+  void ClearCorrectionDecls() {
+    CorrectionDecls.clear();
+  }
+
   /// \brief Clears the list of NamedDecls before adding the new one.
   void setCorrectionDecl(NamedDecl *CDecl) {
     CorrectionDecls.clear();
     addCorrectionDecl(CDecl);
   }
 
+  /// \brief Clears the list of NamedDecls and adds the given set.
+  void setCorrectionDecls(ArrayRef<NamedDecl*> Decls) {
+    CorrectionDecls.clear();
+    CorrectionDecls.insert(CorrectionDecls.begin(), Decls.begin(), Decls.end());
+  }
+
   /// \brief Add the given NamedDecl to the list of NamedDecls that are the
   /// declarations associated with the DeclarationName of this TypoCorrection
   void addCorrectionDecl(NamedDecl *CDecl);
@@ -140,7 +164,7 @@ public:
   }
 
   /// \brief Returns whether this TypoCorrection has a non-empty DeclarationName
-  operator bool() const { return bool(CorrectionName); }
+  LLVM_EXPLICIT operator bool() const { return bool(CorrectionName); }
 
   /// \brief Mark this TypoCorrection as being a keyword.
   /// Since addCorrectionDeclsand setCorrectionDecl don't allow NULL to be
@@ -149,6 +173,7 @@ public:
   void makeKeyword() {
     CorrectionDecls.clear();
     CorrectionDecls.push_back(0);
+    ForceSpecifierReplacement = true;
   }
 
   // Check if this TypoCorrection is a keyword by checking if the first
@@ -171,10 +196,11 @@ public:
     return CorrectionDecls.size() > 1;
   }
 
-  void setCorrectionRange(CXXScopeSpec* SS,
+  void setCorrectionRange(CXXScopeSpec *SS,
                           const DeclarationNameInfo &TypoName) {
-    CorrectionRange.setBegin(CorrectionNameSpec && SS ? SS->getBeginLoc()
-                                                      : TypoName.getLoc());
+    CorrectionRange.setBegin(ForceSpecifierReplacement && SS && !SS->isEmpty()
+                                 ? SS->getBeginLoc()
+                                 : TypoName.getLoc());
     CorrectionRange.setEnd(TypoName.getLoc());
   }
 
@@ -182,17 +208,22 @@ public:
     return CorrectionRange;
   }
 
-  typedef SmallVector<NamedDecl *, 1>::iterator decl_iterator;
+  typedef SmallVectorImpl<NamedDecl *>::iterator decl_iterator;
   decl_iterator begin() {
     return isKeyword() ? CorrectionDecls.end() : CorrectionDecls.begin();
   }
   decl_iterator end() { return CorrectionDecls.end(); }
-  typedef SmallVector<NamedDecl *, 1>::const_iterator const_decl_iterator;
+  typedef SmallVectorImpl<NamedDecl *>::const_iterator const_decl_iterator;
   const_decl_iterator begin() const {
     return isKeyword() ? CorrectionDecls.end() : CorrectionDecls.begin();
   }
   const_decl_iterator end() const { return CorrectionDecls.end(); }
 
+  /// \brief Returns whether this typo correction is correcting to a
+  /// declaration that was declared in a module that has not been imported.
+  bool requiresImport() const { return RequiresImport; }
+  void setRequiresImport(bool Req) { RequiresImport = Req; }
+
 private:
   bool hasCorrectionDecl() const {
     return (!isKeyword() && !CorrectionDecls.empty());
@@ -206,12 +237,14 @@ private:
   unsigned QualifierDistance;
   unsigned CallbackDistance;
   SourceRange CorrectionRange;
+  bool ForceSpecifierReplacement;
+  bool RequiresImport;
 };
 
 /// @brief Base class for callback objects used by Sema::CorrectTypo to check
 /// the validity of a potential typo correction.
 class CorrectionCandidateCallback {
- public:
+public:
   static const unsigned InvalidDistance = TypoCorrection::InvalidDistance;
 
   CorrectionCandidateCallback()
@@ -260,12 +293,42 @@ class CorrectionCandidateCallback {
 /// to ones having a single Decl* of the given type.
 template <class C>
 class DeclFilterCCC : public CorrectionCandidateCallback {
- public:
+public:
   virtual bool ValidateCandidate(const TypoCorrection &candidate) {
     return candidate.getCorrectionDeclAs<C>();
   }
 };
 
+// @brief Callback class to limit the allowed keywords and to only accept typo
+// corrections that are keywords or whose decls refer to functions (or template
+// functions) that accept the given number of arguments.
+class FunctionCallFilterCCC : public CorrectionCandidateCallback {
+public:
+  FunctionCallFilterCCC(Sema &SemaRef, unsigned NumArgs,
+                        bool HasExplicitTemplateArgs);
+
+  virtual bool ValidateCandidate(const TypoCorrection &candidate);
+
+ private:
+  unsigned NumArgs;
+  bool HasExplicitTemplateArgs;
+};
+
+// @brief Callback class that effectively disabled typo correction
+class NoTypoCorrectionCCC : public CorrectionCandidateCallback {
+public:
+  NoTypoCorrectionCCC() {
+    WantTypeSpecifiers = false;
+    WantExpressionKeywords = false;
+    WantCXXNamedCasts = false;
+    WantRemainingKeywords = false;
+  }
+
+  virtual bool ValidateCandidate(const TypoCorrection &candidate) {
+    return false;
+  }
+};
+
 }
 
 #endif
diff --git a/include/clang/Serialization/ASTBitCodes.h b/include/clang/Serialization/ASTBitCodes.h
index 81f898042581..03d905054aea 100644
--- a/include/clang/Serialization/ASTBitCodes.h
+++ b/include/clang/Serialization/ASTBitCodes.h
@@ -535,7 +535,10 @@ namespace clang {
 
       /// \brief Record code for undefined but used functions and variables that
       /// need a definition in this TU.
-      UNDEFINED_BUT_USED = 49
+      UNDEFINED_BUT_USED = 49,
+
+      /// \brief Record code for late parsed template functions.
+      LATE_PARSED_TEMPLATE = 50
     };
 
     /// \brief Record types used within a source manager block.
@@ -623,7 +626,9 @@ namespace clang {
       /// \brief Specifies a configuration macro for this module.
       SUBMODULE_CONFIG_MACRO = 11,
       /// \brief Specifies a conflict with another module.
-      SUBMODULE_CONFLICT = 12
+      SUBMODULE_CONFLICT = 12,
+      /// \brief Specifies a header that is private to this submodule.
+      SUBMODULE_PRIVATE_HEADER = 13
     };
 
     /// \brief Record types used within a comments block.
@@ -834,7 +839,9 @@ namespace clang {
       /// \brief A UnaryTransformType record.
       TYPE_UNARY_TRANSFORM       = 39,
       /// \brief An AtomicType record.
-      TYPE_ATOMIC                = 40
+      TYPE_ATOMIC                = 40,
+      /// \brief A DecayedType record.
+      TYPE_DECAYED               = 41
     };
 
     /// \brief The type IDs for special types constructed by semantic
@@ -1023,6 +1030,12 @@ namespace clang {
       DECL_CLASS_TEMPLATE_SPECIALIZATION,
       /// \brief A ClassTemplatePartialSpecializationDecl record.
       DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION,
+      /// \brief A VarTemplateDecl record.
+      DECL_VAR_TEMPLATE,
+      /// \brief A VarTemplateSpecializationDecl record.
+      DECL_VAR_TEMPLATE_SPECIALIZATION,
+      /// \brief A VarTemplatePartialSpecializationDecl record.
+      DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION,
       /// \brief A FunctionTemplateDecl record.
       DECL_FUNCTION_TEMPLATE,
       /// \brief A TemplateTypeParmDecl record.
@@ -1050,7 +1063,7 @@ namespace clang {
       DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION,
       /// \brief An ImportDecl recording a module import.
       DECL_IMPORT,
-      /// \brief A OMPThreadPrivateDecl record.
+      /// \brief An OMPThreadPrivateDecl record.
       DECL_OMP_THREADPRIVATE,
       /// \brief An EmptyDecl record.
       DECL_EMPTY
@@ -1173,6 +1186,8 @@ namespace clang {
       EXPR_GNU_NULL,
       /// \brief A ShuffleVectorExpr record.
       EXPR_SHUFFLE_VECTOR,
+      /// \brief A ConvertVectorExpr record.
+      EXPR_CONVERT_VECTOR,
       /// \brief BlockExpr
       EXPR_BLOCK,
       /// \brief A GenericSelectionExpr record.
@@ -1259,6 +1274,8 @@ namespace clang {
       EXPR_CXX_FUNCTIONAL_CAST,
       /// \brief A UserDefinedLiteral record.
       EXPR_USER_DEFINED_LITERAL,
+      /// \brief A CXXStdInitializerListExpr record.
+      EXPR_CXX_STD_INITIALIZER_LIST,
       /// \brief A CXXBoolLiteralExpr record.
       EXPR_CXX_BOOL_LITERAL,
       EXPR_CXX_NULL_PTR_LITERAL,  // CXXNullPtrLiteralExpr
@@ -1313,7 +1330,10 @@ namespace clang {
       STMT_SEH_EXCEPT,            // SEHExceptStmt
       STMT_SEH_FINALLY,           // SEHFinallyStmt
       STMT_SEH_TRY,               // SEHTryStmt
-      
+
+      // OpenMP drectives
+      STMT_OMP_PARALLEL_DIRECTIVE,
+
       // ARC
       EXPR_OBJC_BRIDGED_CAST,     // ObjCBridgedCastExpr
       
diff --git a/include/clang/Serialization/ASTReader.h b/include/clang/Serialization/ASTReader.h
index 2c0102e3410f..d3cca1a84948 100644
--- a/include/clang/Serialization/ASTReader.h
+++ b/include/clang/Serialization/ASTReader.h
@@ -88,7 +88,7 @@ class TypeLocReader;
 struct HeaderFileInfo;
 class VersionTuple;
 class TargetOptions;
-class ASTUnresolvedSet;
+class LazyASTUnresolvedSet;
 
 /// \brief Abstract interface for callback invocations by the ASTReader.
 ///
@@ -166,9 +166,6 @@ public:
     return false;
   }
 
-  /// \brief Receives a HeaderFileInfo entry.
-  virtual void ReadHeaderFileInfo(const HeaderFileInfo &HFI, unsigned ID) {}
-
   /// \brief Receives __COUNTER__ value.
   virtual void ReadCounter(const serialization::ModuleFile &M,
                            unsigned Value) {}
@@ -190,11 +187,9 @@ class PCHValidator : public ASTReaderListener {
   Preprocessor &PP;
   ASTReader &Reader;
 
-  unsigned NumHeaderInfos;
-
 public:
   PCHValidator(Preprocessor &PP, ASTReader &Reader)
-    : PP(PP), Reader(Reader), NumHeaderInfos(0) {}
+    : PP(PP), Reader(Reader) {}
 
   virtual bool ReadLanguageOptions(const LangOptions &LangOpts,
                                    bool Complain);
@@ -203,7 +198,6 @@ public:
   virtual bool ReadPreprocessorOptions(const PreprocessorOptions &PPOpts,
                                        bool Complain,
                                        std::string &SuggestedPredefines);
-  virtual void ReadHeaderFileInfo(const HeaderFileInfo &HFI, unsigned ID);
   virtual void ReadCounter(const serialization::ModuleFile &M, unsigned Value);
 
 private:
@@ -246,6 +240,7 @@ class ASTReader
 {
 public:
   typedef SmallVector<uint64_t, 64> RecordData;
+  typedef SmallVectorImpl<uint64_t> RecordDataImpl;
 
   /// \brief The result of reading the control block of an AST file, which
   /// can fail for various reasons.
@@ -315,6 +310,10 @@ private:
   /// \brief The module manager which manages modules and their dependencies
   ModuleManager ModuleMgr;
 
+  /// \brief The location where the module file will be considered as
+  /// imported from. For non-module AST types it should be invalid.
+  SourceLocation CurrentImportLoc;
+
   /// \brief The global module index, if loaded.
   llvm::OwningPtr<GlobalModuleIndex> GlobalIndex;
 
@@ -712,6 +711,9 @@ private:
   /// SourceLocation of a matching ODR-use.
   SmallVector<uint64_t, 8> UndefinedButUsed;
 
+  // \brief A list of late parsed template function data.
+  SmallVector<uint64_t, 1> LateParsedTemplates;
+
   /// \brief A list of modules that were imported by precompiled headers or
   /// any other non-module AST file.
   SmallVector<serialization::SubmoduleID, 2> ImportedModules;
@@ -873,6 +875,14 @@ private:
   /// been completed.
   std::deque<PendingDeclContextInfo> PendingDeclContextInfos;
 
+  /// \brief The set of NamedDecls that have been loaded, but are members of a
+  /// context that has been merged into another context where the corresponding
+  /// declaration is either missing or has not yet been loaded.
+  ///
+  /// We will check whether the corresponding declaration is in fact missing
+  /// once recursing loading has been completed.
+  llvm::SmallVector<NamedDecl *, 16> PendingOdrMergeChecks;
+
   /// \brief The set of Objective-C categories that have been deserialized
   /// since the last time the declaration chains were linked.
   llvm::SmallPtrSet<ObjCCategoryDecl *, 16> CategoriesDeserialized;
@@ -909,16 +919,22 @@ private:
   /// the given canonical declaration.
   MergedDeclsMap::iterator
   combineStoredMergedDecls(Decl *Canon, serialization::GlobalDeclID CanonID);
-  
-  /// \brief Ready to load the previous declaration of the given Decl.
-  void loadAndAttachPreviousDecl(Decl *D, serialization::DeclID ID);
+
+  /// \brief A mapping from DeclContexts to the semantic DeclContext that we
+  /// are treating as the definition of the entity. This is used, for instance,
+  /// when merging implicit instantiations of class templates across modules.
+  llvm::DenseMap<DeclContext *, DeclContext *> MergedDeclContexts;
+
+  /// \brief A mapping from canonical declarations of enums to their canonical
+  /// definitions. Only populated when using modules in C++.
+  llvm::DenseMap<EnumDecl *, EnumDecl *> EnumDefinitions;
 
   /// \brief When reading a Stmt tree, Stmt operands are placed in this stack.
   SmallVector<Stmt *, 16> StmtStack;
 
   /// \brief What kind of records we are reading.
   enum ReadingKind {
-    Read_Decl, Read_Type, Read_Stmt
+    Read_None, Read_Decl, Read_Type, Read_Stmt
   };
 
   /// \brief What kind of records we are reading.
@@ -1238,7 +1254,7 @@ public:
   void setDeserializationListener(ASTDeserializationListener *Listener);
 
   /// \brief Determine whether this AST reader has a global index.
-  bool hasGlobalIndex() const { return GlobalIndex; }
+  bool hasGlobalIndex() const { return GlobalIndex.isValid(); }
 
   /// \brief Attempts to load the global index.
   ///
@@ -1252,6 +1268,9 @@ public:
   /// \brief Initializes the ASTContext
   void InitializeContext();
 
+  /// \brief Update the state of Sema after loading some additional modules.
+  void UpdateSema();
+
   /// \brief Add in-memory (virtual file) buffer.
   void addInMemoryBuffer(StringRef &FileName, llvm::MemoryBuffer *Buffer) {
     ModuleMgr.addInMemoryBuffer(FileName, Buffer);
@@ -1386,6 +1405,10 @@ public:
   ReadTemplateArgumentLoc(ModuleFile &F,
                           const RecordData &Record, unsigned &Idx);
 
+  const ASTTemplateArgumentListInfo*
+  ReadASTTemplateArgumentListInfo(ModuleFile &F,
+                                  const RecordData &Record, unsigned &Index);
+
   /// \brief Reads a declarator info from the given record.
   TypeSourceInfo *GetTypeSourceInfo(ModuleFile &F,
                                     const RecordData &Record, unsigned &Idx);
@@ -1612,6 +1635,9 @@ public:
                  SmallVectorImpl<std::pair<ValueDecl *,
                                            SourceLocation> > &Pending);
 
+  virtual void ReadLateParsedTemplates(
+      llvm::DenseMap<const FunctionDecl *, LateParsedTemplate *> &LPTMap);
+
   /// \brief Load a selector from disk, registering its ID if it exists.
   void LoadSelector(Selector Sel);
 
@@ -1734,12 +1760,12 @@ public:
 
   /// \brief Read a template argument array.
   void
-  ReadTemplateArgumentList(SmallVector<TemplateArgument, 8> &TemplArgs,
+  ReadTemplateArgumentList(SmallVectorImpl<TemplateArgument> &TemplArgs,
                            ModuleFile &F, const RecordData &Record,
                            unsigned &Idx);
 
   /// \brief Read a UnresolvedSet structure.
-  void ReadUnresolvedSet(ModuleFile &F, ASTUnresolvedSet &Set,
+  void ReadUnresolvedSet(ModuleFile &F, LazyASTUnresolvedSet &Set,
                          const RecordData &Record, unsigned &Idx);
 
   /// \brief Read a C++ base specifier.
@@ -1762,7 +1788,8 @@ public:
 
   /// \brief Read a source location.
   SourceLocation ReadSourceLocation(ModuleFile &ModuleFile,
-                                    const RecordData &Record, unsigned &Idx) {
+                                    const RecordDataImpl &Record,
+                                    unsigned &Idx) {
     return ReadSourceLocation(ModuleFile, Record[Idx++]);
   }
 
@@ -1813,7 +1840,7 @@ public:
   Expr *ReadSubExpr();
 
   /// \brief Reads a token out of a record.
-  Token ReadToken(ModuleFile &M, const RecordData &Record, unsigned &Idx);
+  Token ReadToken(ModuleFile &M, const RecordDataImpl &Record, unsigned &Idx);
 
   /// \brief Reads the macro record located at the given offset.
   MacroInfo *ReadMacroRecord(ModuleFile &F, uint64_t Offset);
diff --git a/include/clang/Serialization/ASTWriter.h b/include/clang/Serialization/ASTWriter.h
index 8ac8fde88470..07fdd062ace7 100644
--- a/include/clang/Serialization/ASTWriter.h
+++ b/include/clang/Serialization/ASTWriter.h
@@ -424,7 +424,8 @@ private:
                          StringRef isysroot, const std::string &OutputFile);
   void WriteInputFiles(SourceManager &SourceMgr,
                        HeaderSearchOptions &HSOpts,
-                       StringRef isysroot);
+                       StringRef isysroot,
+                       bool Modules);
   void WriteSourceManagerBlock(SourceManager &SourceMgr,
                                const Preprocessor &PP,
                                StringRef isysroot);
@@ -456,7 +457,8 @@ private:
   void WriteObjCCategories();
   void WriteRedeclarations();
   void WriteMergedDecls();
-                        
+  void WriteLateParsedTemplates(Sema &SemaRef);
+
   unsigned DeclParmVarAbbrev;
   unsigned DeclContextLexicalAbbrev;
   unsigned DeclContextVisibleLookupAbbrev;
@@ -575,6 +577,11 @@ public:
   void AddTemplateArgumentLoc(const TemplateArgumentLoc &Arg,
                               RecordDataImpl &Record);
 
+  /// \brief Emits an AST template argument list info.
+  void AddASTTemplateArgumentListInfo(
+                          const ASTTemplateArgumentListInfo *ASTTemplArgList,
+                          RecordDataImpl &Record);
+
   /// \brief Emit a reference to a declaration.
   void AddDeclRef(const Decl *D, RecordDataImpl &Record);
 
@@ -723,8 +730,12 @@ public:
   virtual void AddedCXXImplicitMember(const CXXRecordDecl *RD, const Decl *D);
   virtual void AddedCXXTemplateSpecialization(const ClassTemplateDecl *TD,
                                     const ClassTemplateSpecializationDecl *D);
+  virtual void
+  AddedCXXTemplateSpecialization(const VarTemplateDecl *TD,
+                                 const VarTemplateSpecializationDecl *D);
   virtual void AddedCXXTemplateSpecialization(const FunctionTemplateDecl *TD,
                                               const FunctionDecl *D);
+  virtual void DeducedReturnType(const FunctionDecl *FD, QualType ReturnType);
   virtual void CompletedImplicitDefinition(const FunctionDecl *D);
   virtual void StaticDataMemberInstantiated(const VarDecl *D);
   virtual void AddedObjCCategoryToInterface(const ObjCCategoryDecl *CatD,
@@ -732,6 +743,7 @@ public:
   virtual void AddedObjCPropertyInClassExtension(const ObjCPropertyDecl *Prop,
                                             const ObjCPropertyDecl *OrigProp,
                                             const ObjCCategoryDecl *ClassExt);
+  void DeclarationMarkedUsed(const Decl *D) LLVM_OVERRIDE;
 };
 
 /// \brief AST and semantic-analysis consumer that generates a
@@ -746,6 +758,8 @@ class PCHGenerator : public SemaConsumer {
   SmallVector<char, 128> Buffer;
   llvm::BitstreamWriter Stream;
   ASTWriter Writer;
+  bool AllowASTWithErrors;
+  bool HasEmittedPCH;
 
 protected:
   ASTWriter &getWriter() { return Writer; }
@@ -754,12 +768,15 @@ protected:
 public:
   PCHGenerator(const Preprocessor &PP, StringRef OutputFile,
                clang::Module *Module,
-               StringRef isysroot, raw_ostream *Out);
+               StringRef isysroot, raw_ostream *Out,
+               bool AllowASTWithErrors = false);
   ~PCHGenerator();
   virtual void InitializeSema(Sema &S) { SemaPtr = &S; }
   virtual void HandleTranslationUnit(ASTContext &Ctx);
   virtual ASTMutationListener *GetASTMutationListener();
   virtual ASTDeserializationListener *GetASTDeserializationListener();
+
+  bool hasEmittedPCH() const { return HasEmittedPCH; }
 };
 
 } // end namespace clang
diff --git a/include/clang/Serialization/GlobalModuleIndex.h b/include/clang/Serialization/GlobalModuleIndex.h
index ab91f4009c0b..76414ba634cc 100644
--- a/include/clang/Serialization/GlobalModuleIndex.h
+++ b/include/clang/Serialization/GlobalModuleIndex.h
@@ -34,6 +34,7 @@ namespace clang {
 class DirectoryEntry;
 class FileEntry;
 class FileManager;
+class IdentifierIterator;
 
 namespace serialization {
   class ModuleFile;
diff --git a/include/clang/Serialization/ModuleManager.h b/include/clang/Serialization/ModuleManager.h
index b2c406346a5f..ca643ba45f2e 100644
--- a/include/clang/Serialization/ModuleManager.h
+++ b/include/clang/Serialization/ModuleManager.h
@@ -96,9 +96,9 @@ class ModuleManager {
   void returnVisitState(VisitState *State);
 
 public:
-  typedef SmallVector<ModuleFile*, 2>::iterator ModuleIterator;
-  typedef SmallVector<ModuleFile*, 2>::const_iterator ModuleConstIterator;
-  typedef SmallVector<ModuleFile*, 2>::reverse_iterator ModuleReverseIterator;
+  typedef SmallVectorImpl<ModuleFile*>::iterator ModuleIterator;
+  typedef SmallVectorImpl<ModuleFile*>::const_iterator ModuleConstIterator;
+  typedef SmallVectorImpl<ModuleFile*>::reverse_iterator ModuleReverseIterator;
   typedef std::pair<uint32_t, StringRef> ModuleOffset;
   
   explicit ModuleManager(FileManager &FileMgr);
diff --git a/include/clang/Serialization/SerializationDiagnostic.h b/include/clang/Serialization/SerializationDiagnostic.h
index e63f814ee6a0..c28cfea25c87 100644
--- a/include/clang/Serialization/SerializationDiagnostic.h
+++ b/include/clang/Serialization/SerializationDiagnostic.h
@@ -16,7 +16,7 @@ namespace clang {
   namespace diag {
     enum {
 #define DIAG(ENUM,FLAGS,DEFAULT_MAPPING,DESC,GROUP,\
-             SFINAE,ACCESS,NOWERROR,SHOWINSYSHEADER,CATEGORY) ENUM,
+             SFINAE,NOWERROR,SHOWINSYSHEADER,CATEGORY) ENUM,
 #define SERIALIZATIONSTART
 #include "clang/Basic/DiagnosticSerializationKinds.inc"
 #undef DIAG
diff --git a/include/clang/StaticAnalyzer/Checkers/ObjCRetainCount.h b/include/clang/StaticAnalyzer/Checkers/ObjCRetainCount.h
new file mode 100644
index 000000000000..5978299701cf
--- /dev/null
+++ b/include/clang/StaticAnalyzer/Checkers/ObjCRetainCount.h
@@ -0,0 +1,223 @@
+//==-- ObjCRetainCount.h - Retain count summaries for Cocoa -------*- C++ -*--//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file defines the core data structures for retain count "summaries"
+//  for Objective-C and Core Foundation APIs.  These summaries are used
+//  by the static analyzer to summarize the retain/release effects of
+//  function and method calls.  This drives a path-sensitive typestate
+//  analysis in the static analyzer, but can also potentially be used by
+//  other clients.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_OBJCRETAINCOUNT_H
+#define LLVM_CLANG_OBJCRETAINCOUNT_H
+
+namespace clang { namespace ento { namespace objc_retain {
+
+/// An ArgEffect summarizes the retain count behavior on an argument or receiver
+/// to a function or method.
+enum ArgEffect {
+  /// There is no effect.
+  DoNothing,
+
+  /// The argument is treated as if an -autorelease message had been sent to
+  /// the referenced object.
+  Autorelease,
+
+  /// The argument is treated as if an -dealloc message had been sent to
+  /// the referenced object.
+  Dealloc,
+
+  /// The argument has its reference count decreased by 1.  This is as
+  /// if CFRelease has been called on the argument.
+  DecRef,
+
+  /// The argument has its reference count decreased by 1.  This is as
+  /// if a -release message has been sent to the argument.  This differs
+  /// in behavior from DecRef when GC is enabled.
+  DecRefMsg,
+
+  /// The argument has its reference count decreased by 1 to model
+  /// a transferred bridge cast under ARC.
+  DecRefBridgedTransferred,
+
+  /// The argument has its reference count increased by 1.  This is as
+  /// if a -retain message has been sent to the argument.  This differs
+  /// in behavior from IncRef when GC is enabled.
+  IncRefMsg,
+
+  /// The argument has its reference count increased by 1.  This is as
+  /// if CFRetain has been called on the argument.
+  IncRef,
+
+  /// The argument acts as if has been passed to CFMakeCollectable, which
+  /// transfers the object to the Garbage Collector under GC.
+  MakeCollectable,
+
+  /// The argument is treated as potentially escaping, meaning that
+  /// even when its reference count hits 0 it should be treated as still
+  /// possibly being alive as someone else *may* be holding onto the object.
+  MayEscape,
+
+  /// All typestate tracking of the object ceases.  This is usually employed
+  /// when the effect of the call is completely unknown.
+  StopTracking,
+
+  /// All typestate tracking of the object ceases.  Unlike StopTracking,
+  /// this is also enforced when the method body is inlined.
+  ///
+  /// In some cases, we obtain a better summary for this checker
+  /// by looking at the call site than by inlining the function.
+  /// Signifies that we should stop tracking the symbol even if
+  /// the function is inlined.
+  StopTrackingHard,
+
+  /// Performs the combined functionality of DecRef and StopTrackingHard.
+  ///
+  /// The models the effect that the called function decrements the reference
+  /// count of the argument and all typestate tracking on that argument
+  /// should cease.
+  DecRefAndStopTrackingHard,
+
+  /// Performs the combined functionality of DecRefMsg and StopTrackingHard.
+  ///
+  /// The models the effect that the called function decrements the reference
+  /// count of the argument and all typestate tracking on that argument
+  /// should cease.
+  DecRefMsgAndStopTrackingHard
+};
+
+/// RetEffect summarizes a call's retain/release behavior with respect
+/// to its return value.
+class RetEffect {
+public:
+  enum Kind {
+    /// Indicates that no retain count information is tracked for
+    /// the return value.
+    NoRet,
+    /// Indicates that the returned value is an owned (+1) symbol.
+    OwnedSymbol,
+    /// Indicates that the returned value is an owned (+1) symbol and
+    /// that it should be treated as freshly allocated.
+    OwnedAllocatedSymbol,
+    /// Indicates that the returned value is an object with retain count
+    /// semantics but that it is not owned (+0).  This is the default
+    /// for getters, etc.
+    NotOwnedSymbol,
+    /// Indicates that the object is not owned and controlled by the
+    /// Garbage collector.
+    GCNotOwnedSymbol,
+    /// Indicates that the object is not owned and controlled by ARC.
+    ARCNotOwnedSymbol,
+    /// Indicates that the return value is an owned object when the
+    /// receiver is also a tracked object.
+    OwnedWhenTrackedReceiver,
+    // Treat this function as returning a non-tracked symbol even if
+    // the function has been inlined. This is used where the call
+    // site summary is more presise than the summary indirectly produced
+    // by inlining the function
+    NoRetHard
+  };
+  
+  /// Determines the object kind of a tracked object.
+  enum ObjKind {
+    /// Indicates that the tracked object is a CF object.  This is
+    /// important between GC and non-GC code.
+    CF,
+    /// Indicates that the tracked object is an Objective-C object.
+    ObjC,
+    /// Indicates that the tracked object could be a CF or Objective-C object.
+    AnyObj
+  };
+  
+private:
+  Kind K;
+  ObjKind O;
+  
+  RetEffect(Kind k, ObjKind o = AnyObj) : K(k), O(o) {}
+  
+public:
+  Kind getKind() const { return K; }
+  
+  ObjKind getObjKind() const { return O; }
+  
+  bool isOwned() const {
+    return K == OwnedSymbol || K == OwnedAllocatedSymbol ||
+    K == OwnedWhenTrackedReceiver;
+  }
+  
+  bool notOwned() const {
+    return K == NotOwnedSymbol || K == ARCNotOwnedSymbol;
+  }
+  
+  bool operator==(const RetEffect &Other) const {
+    return K == Other.K && O == Other.O;
+  }
+  
+  static RetEffect MakeOwnedWhenTrackedReceiver() {
+    return RetEffect(OwnedWhenTrackedReceiver, ObjC);
+  }
+  
+  static RetEffect MakeOwned(ObjKind o, bool isAllocated = false) {
+    return RetEffect(isAllocated ? OwnedAllocatedSymbol : OwnedSymbol, o);
+  }
+  static RetEffect MakeNotOwned(ObjKind o) {
+    return RetEffect(NotOwnedSymbol, o);
+  }
+  static RetEffect MakeGCNotOwned() {
+    return RetEffect(GCNotOwnedSymbol, ObjC);
+  }
+  static RetEffect MakeARCNotOwned() {
+    return RetEffect(ARCNotOwnedSymbol, ObjC);
+  }
+  static RetEffect MakeNoRet() {
+    return RetEffect(NoRet);
+  }
+  static RetEffect MakeNoRetHard() {
+    return RetEffect(NoRetHard);
+  }
+};
+
+/// Encapsulates the retain count semantics on the arguments, return value,
+/// and receiver (if any) of a function/method call.
+///
+/// Note that construction of these objects is not highly efficient.  That
+/// is okay for clients where creating these objects isn't really a bottleneck.
+/// The purpose of the API is to provide something simple.  The actual
+/// static analyzer checker that implements retain/release typestate
+/// tracking uses something more efficient.
+class CallEffects {
+  llvm::SmallVector<ArgEffect, 10> Args;
+  RetEffect Ret;
+  ArgEffect Receiver;
+
+  CallEffects(const RetEffect &R) : Ret(R) {}
+
+public:
+  /// Returns the argument effects for a call.
+  llvm::ArrayRef<ArgEffect> getArgs() const { return Args; }
+
+  /// Returns the effects on the receiver.
+  ArgEffect getReceiver() const { return Receiver; }
+
+  /// Returns the effect on the return value.
+  RetEffect getReturnValue() const { return Ret; }
+
+  /// Return the CallEfect for a given Objective-C method.
+  static CallEffects getEffect(const ObjCMethodDecl *MD);
+
+  /// Return the CallEfect for a given C/C++ function.
+  static CallEffects getEffect(const FunctionDecl *FD);
+};
+
+}}}
+
+#endif
+
diff --git a/include/clang/StaticAnalyzer/Core/Analyses.def b/include/clang/StaticAnalyzer/Core/Analyses.def
index dc7945016b1a..3355f4b6949c 100644
--- a/include/clang/StaticAnalyzer/Core/Analyses.def
+++ b/include/clang/StaticAnalyzer/Core/Analyses.def
@@ -24,14 +24,14 @@ ANALYSIS_STORE(RegionStore, "region", "Use region-based analyzer store", CreateR
 ANALYSIS_CONSTRAINTS(RangeConstraints, "range", "Use constraint tracking of concrete value ranges", CreateRangeConstraintManager)
 
 #ifndef ANALYSIS_DIAGNOSTICS
-#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATEFN, AUTOCREATE)
+#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATEFN)
 #endif
 
-ANALYSIS_DIAGNOSTICS(HTML,  "html",  "Output analysis results using HTML",   createHTMLDiagnosticConsumer, false)
-ANALYSIS_DIAGNOSTICS(PLIST, "plist", "Output analysis results using Plists", createPlistDiagnosticConsumer, true)
-ANALYSIS_DIAGNOSTICS(PLIST_MULTI_FILE, "plist-multi-file", "Output analysis results using Plists (allowing for mult-file bugs)", createPlistMultiFileDiagnosticConsumer, true)
-ANALYSIS_DIAGNOSTICS(PLIST_HTML, "plist-html", "Output analysis results using HTML wrapped with Plists", createPlistHTMLDiagnosticConsumer, true)
-ANALYSIS_DIAGNOSTICS(TEXT, "text", "Text output of analysis results", createTextPathDiagnosticConsumer, true)
+ANALYSIS_DIAGNOSTICS(HTML,  "html",  "Output analysis results using HTML",   createHTMLDiagnosticConsumer)
+ANALYSIS_DIAGNOSTICS(PLIST, "plist", "Output analysis results using Plists", createPlistDiagnosticConsumer)
+ANALYSIS_DIAGNOSTICS(PLIST_MULTI_FILE, "plist-multi-file", "Output analysis results using Plists (allowing for mult-file bugs)", createPlistMultiFileDiagnosticConsumer)
+ANALYSIS_DIAGNOSTICS(PLIST_HTML, "plist-html", "Output analysis results using HTML wrapped with Plists", createPlistHTMLDiagnosticConsumer)
+ANALYSIS_DIAGNOSTICS(TEXT, "text", "Text output of analysis results", createTextPathDiagnosticConsumer)
 
 #ifndef ANALYSIS_PURGE
 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC)
diff --git a/include/clang/StaticAnalyzer/Core/AnalyzerOptions.h b/include/clang/StaticAnalyzer/Core/AnalyzerOptions.h
index fb35f518ef02..618782e5d78c 100644
--- a/include/clang/StaticAnalyzer/Core/AnalyzerOptions.h
+++ b/include/clang/StaticAnalyzer/Core/AnalyzerOptions.h
@@ -52,7 +52,7 @@ NumConstraints
 /// AnalysisDiagClients - Set of available diagnostic clients for rendering
 ///  analysis results.
 enum AnalysisDiagClients {
-#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) PD_##NAME,
+#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) PD_##NAME,
 #include "clang/StaticAnalyzer/Core/Analyses.def"
 NUM_ANALYSIS_DIAG_CLIENTS
 };
@@ -201,6 +201,9 @@ private:
   /// \sa mayInlineCXXContainerCtorsAndDtors
   Optional<bool> InlineCXXContainerCtorsAndDtors;
 
+  /// \sa mayInlineCXXSharedPtrDtor
+  Optional<bool> InlineCXXSharedPtrDtor;
+
   /// \sa mayInlineObjCMethod
   Optional<bool> ObjCInliningMode;
 
@@ -223,6 +226,9 @@ private:
   /// \sa shouldSuppressFromCXXStandardLibrary
   Optional<bool> SuppressFromCXXStandardLibrary;
 
+  /// \sa reportIssuesInMainSourceFile
+  Optional<bool> ReportIssuesInMainSourceFile;
+
   /// \sa getGraphTrimInterval
   Optional<unsigned> GraphTrimInterval;
 
@@ -291,6 +297,16 @@ public:
   /// accepts the values "true" and "false".
   bool mayInlineCXXContainerCtorsAndDtors();
 
+  /// Returns whether or not the destructor of C++ 'shared_ptr' may be
+  /// considered for inlining.
+  ///
+  /// This covers std::shared_ptr, std::tr1::shared_ptr, and boost::shared_ptr,
+  /// and indeed any destructor named "~shared_ptr".
+  ///
+  /// This is controlled by the 'c++-shared_ptr-inlining' config option, which
+  /// accepts the values "true" and "false".
+  bool mayInlineCXXSharedPtrDtor();
+
   /// Returns whether or not paths that go through null returns should be
   /// suppressed.
   ///
@@ -326,6 +342,13 @@ public:
   /// which accepts the values "true" and "false".
   bool shouldSuppressFromCXXStandardLibrary();
 
+  /// Returns whether or not the diagnostic report should be always reported
+  /// in the main source file and not the headers.
+  ///
+  /// This is controlled by the 'report-in-main-source-file' config option,
+  /// which accepts the values "true" and "false".
+  bool shouldReportIssuesInMainSourceFile();
+
   /// Returns whether irrelevant parts of a bug report path should be pruned
   /// out of the final output.
   ///
diff --git a/include/clang/StaticAnalyzer/Core/BugReporter/BugReporter.h b/include/clang/StaticAnalyzer/Core/BugReporter/BugReporter.h
index 5c560b2f0ec9..9584b8baf4f1 100644
--- a/include/clang/StaticAnalyzer/Core/BugReporter/BugReporter.h
+++ b/include/clang/StaticAnalyzer/Core/BugReporter/BugReporter.h
@@ -16,6 +16,7 @@
 #define LLVM_CLANG_GR_BUGREPORTER
 
 #include "clang/Basic/SourceLocation.h"
+#include "clang/StaticAnalyzer/Core/AnalyzerOptions.h"
 #include "clang/StaticAnalyzer/Core/BugReporter/BugReporterVisitor.h"
 #include "clang/StaticAnalyzer/Core/BugReporter/PathDiagnostic.h"
 #include "clang/StaticAnalyzer/Core/PathSensitive/ProgramState.h"
@@ -375,6 +376,7 @@ public:
   virtual ArrayRef<PathDiagnosticConsumer*> getPathDiagnosticConsumers() = 0;
   virtual ASTContext &getASTContext() = 0;
   virtual SourceManager& getSourceManager() = 0;
+  virtual AnalyzerOptions& getAnalyzerOptions() = 0;
 };
 
 /// BugReporter is a utility class for generating PathDiagnostics for analysis.
@@ -442,6 +444,8 @@ public:
 
   SourceManager& getSourceManager() { return D.getSourceManager(); }
 
+  AnalyzerOptions& getAnalyzerOptions() { return D.getAnalyzerOptions(); }
+
   virtual bool generatePathDiagnostic(PathDiagnostic& pathDiagnostic,
                                       PathDiagnosticConsumer &PC,
                                       ArrayRef<BugReport *> &bugReports) {
@@ -462,20 +466,7 @@ public:
   void EmitBasicReport(const Decl *DeclWithIssue,
                        StringRef BugName, StringRef BugCategory,
                        StringRef BugStr, PathDiagnosticLocation Loc,
-                       SourceRange* RangeBeg, unsigned NumRanges);
-
-  void EmitBasicReport(const Decl *DeclWithIssue,
-                       StringRef BugName, StringRef BugCategory,
-                       StringRef BugStr, PathDiagnosticLocation Loc) {
-    EmitBasicReport(DeclWithIssue, BugName, BugCategory, BugStr, Loc, 0, 0);
-  }
-
-  void EmitBasicReport(const Decl *DeclWithIssue,
-                       StringRef BugName, StringRef Category,
-                       StringRef BugStr, PathDiagnosticLocation Loc,
-                       SourceRange R) {
-    EmitBasicReport(DeclWithIssue, BugName, Category, BugStr, Loc, &R, 1);
-  }
+                       ArrayRef<SourceRange> Ranges = None);
 
 private:
   llvm::StringMap<BugType *> StrBugTypes;
diff --git a/include/clang/StaticAnalyzer/Core/BugReporter/BugType.h b/include/clang/StaticAnalyzer/Core/BugReporter/BugType.h
index 644aa3159301..49f9c83ba950 100644
--- a/include/clang/StaticAnalyzer/Core/BugReporter/BugType.h
+++ b/include/clang/StaticAnalyzer/Core/BugReporter/BugType.h
@@ -14,6 +14,7 @@
 #ifndef LLVM_CLANG_ANALYSIS_BUGTYPE
 #define LLVM_CLANG_ANALYSIS_BUGTYPE
 
+#include "clang/StaticAnalyzer/Core/BugReporter/CommonBugCategories.h"
 #include "clang/Basic/LLVM.h"
 #include "llvm/ADT/FoldingSet.h"
 #include <string>
@@ -31,10 +32,12 @@ private:
   const std::string Name;
   const std::string Category;
   bool SuppressonSink;
+
+  virtual void anchor();
 public:
   BugType(StringRef name, StringRef cat)
     : Name(name), Category(cat), SuppressonSink(false) {}
-  virtual ~BugType();
+  virtual ~BugType() {}
 
   // FIXME: Should these be made strings as well?
   StringRef getName() const { return Name; }
@@ -50,14 +53,14 @@ public:
 };
 
 class BuiltinBug : public BugType {
-  virtual void anchor();
   const std::string desc;
+  virtual void anchor();
 public:
   BuiltinBug(const char *name, const char *description)
-    : BugType(name, "Logic error"), desc(description) {}
+    : BugType(name, categories::LogicError), desc(description) {}
   
   BuiltinBug(const char *name)
-    : BugType(name, "Logic error"), desc(name) {}
+    : BugType(name, categories::LogicError), desc(name) {}
   
   StringRef getDescription() const { return desc; }
 };
diff --git a/include/clang/StaticAnalyzer/Checkers/CommonBugCategories.h b/include/clang/StaticAnalyzer/Core/BugReporter/CommonBugCategories.h
index 9d4251b1a757..3f0fe968cc11 100644
--- a/include/clang/StaticAnalyzer/Checkers/CommonBugCategories.h
+++ b/include/clang/StaticAnalyzer/Core/BugReporter/CommonBugCategories.h
@@ -7,16 +7,17 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef LLVM_CLANG_STATIC_ANALYZER_CHECKER_CATEGORIES_H
-#define LLVM_CLANG_STATIC_ANALYZER_CHECKER_CATEGORIES_H
+#ifndef LLVM_CLANG_STATIC_ANALYZER_BUG_CATEGORIES_H
+#define LLVM_CLANG_STATIC_ANALYZER_BUG_CATEGORIES_H
 
 // Common strings used for the "category" of many static analyzer issues.
 namespace clang {
   namespace ento {
     namespace categories {
-      extern const char *CoreFoundationObjectiveC;
-      extern const char *MemoryCoreFoundationObjectiveC;
-      extern const char *UnixAPI;
+      extern const char * const CoreFoundationObjectiveC;
+      extern const char * const LogicError;
+      extern const char * const MemoryCoreFoundationObjectiveC;
+      extern const char * const UnixAPI;
     }
   }
 }
diff --git a/include/clang/StaticAnalyzer/Core/BugReporter/PathDiagnostic.h b/include/clang/StaticAnalyzer/Core/BugReporter/PathDiagnostic.h
index a80b5a7a248c..b0670dad240d 100644
--- a/include/clang/StaticAnalyzer/Core/BugReporter/PathDiagnostic.h
+++ b/include/clang/StaticAnalyzer/Core/BugReporter/PathDiagnostic.h
@@ -38,6 +38,7 @@ class ParentMap;
 class ProgramPoint;
 class SourceManager;
 class Stmt;
+class CallExpr;
 
 namespace ento {
 
@@ -97,7 +98,6 @@ public:
   enum PathGenerationScheme { None, Minimal, Extensive, AlternateExtensive };
   virtual PathGenerationScheme getGenerationScheme() const { return Minimal; }
   virtual bool supportsLogicalOpControlFlow() const { return false; }
-  virtual bool supportsAllBlockEdges() const { return false; }
   
   /// Return true if the PathDiagnosticConsumer supports individual
   /// PathDiagnostics that span multiple files.
@@ -285,11 +285,13 @@ public:
   
   void Profile(llvm::FoldingSetNodeID &ID) const;
 
+  void dump() const;
+
   /// \brief Given an exploded node, retrieve the statement that should be used 
   /// for the diagnostic location.
   static const Stmt *getStmt(const ExplodedNode *N);
 
-  /// \brief Retrieve the statement corresponding to the sucessor node.
+  /// \brief Retrieve the statement corresponding to the successor node.
   static const Stmt *getNextStmt(const ExplodedNode *N);
 };
 
@@ -331,6 +333,10 @@ private:
   const std::string str;
   const Kind kind;
   const DisplayHint Hint;
+
+  /// \brief In the containing bug report, this piece is the last piece from
+  /// the main source file.
+  bool LastInMainSourceFile;
   
   /// A constant string that can be used to tag the PathDiagnosticPiece,
   /// typically with the identification of the creator.  The actual pointer
@@ -389,6 +395,16 @@ public:
   ArrayRef<SourceRange> getRanges() const { return ranges; }
 
   virtual void Profile(llvm::FoldingSetNodeID &ID) const;
+
+  void setAsLastInMainSourceFile() {
+    LastInMainSourceFile = true;
+  }
+
+  bool isLastInMainSourceFile() const {
+    return LastInMainSourceFile;
+  }
+
+  virtual void dump() const = 0;
 };
   
   
@@ -403,6 +419,8 @@ public:
     flattenTo(Result, Result, ShouldFlattenMacros);
     return Result;
   }
+
+  LLVM_ATTRIBUTE_USED void dump() const;
 };
 
 class PathDiagnosticSpotPiece : public PathDiagnosticPiece {
@@ -421,7 +439,7 @@ public:
 
   PathDiagnosticLocation getLocation() const { return Pos; }
   virtual void flattenLocations() { Pos.flatten(); }
-  
+
   virtual void Profile(llvm::FoldingSetNodeID &ID) const;
 
   static bool classof(const PathDiagnosticPiece *P) {
@@ -504,7 +522,7 @@ public:
   }
   
   bool hasCallStackHint() {
-    return (CallStackHint != 0);
+    return CallStackHint.isValid();
   }
 
   /// Produce the hint for the given node. The node contains 
@@ -515,6 +533,8 @@ public:
     return "";  
   }
 
+  virtual void dump() const;
+
   static inline bool classof(const PathDiagnosticPiece *P) {
     return P->getKind() == Event;
   }
@@ -582,6 +602,8 @@ public:
   static PathDiagnosticCallPiece *construct(PathPieces &pieces,
                                             const Decl *caller);
   
+  virtual void dump() const;
+
   virtual void Profile(llvm::FoldingSetNodeID &ID) const;
 
   static inline bool classof(const PathDiagnosticPiece *P) {
@@ -649,7 +671,9 @@ public:
   static inline bool classof(const PathDiagnosticPiece *P) {
     return P->getKind() == ControlFlow;
   }
-  
+
+  virtual void dump() const;
+
   virtual void Profile(llvm::FoldingSetNodeID &ID) const;
 };
 
@@ -673,7 +697,9 @@ public:
   static inline bool classof(const PathDiagnosticPiece *P) {
     return P->getKind() == Macro;
   }
-  
+
+  virtual void dump() const;
+
   virtual void Profile(llvm::FoldingSetNodeID &ID) const;
 };
 
@@ -687,7 +713,10 @@ class PathDiagnostic : public llvm::FoldingSetNode {
   std::string ShortDesc;
   std::string Category;
   std::deque<std::string> OtherDesc;
+
+  /// \brief Loc The location of the path diagnostic report.
   PathDiagnosticLocation Loc;
+
   PathPieces pathImpl;
   SmallVector<PathPieces *, 3> pathStack;
   
@@ -735,12 +764,23 @@ public:
     getActivePath().push_back(EndPiece);
   }
 
+  void appendToDesc(StringRef S) {
+    if (!ShortDesc.empty())
+      ShortDesc.append(S);
+    VerboseDesc.append(S);
+  }
+
   void resetPath() {
     pathStack.clear();
     pathImpl.clear();
     Loc = PathDiagnosticLocation();
   }
-  
+
+  /// \brief If the last piece of the report point to the header file, resets
+  /// the location of the report to be the last location in the main source
+  /// file.
+  void resetDiagnosticLocationToMainFile();
+
   StringRef getVerboseDescription() const { return VerboseDesc; }
   StringRef getShortDescription() const {
     return ShortDesc.empty() ? VerboseDesc : ShortDesc;
@@ -759,7 +799,7 @@ public:
   void addMeta(StringRef s) { OtherDesc.push_back(s); }
 
   PathDiagnosticLocation getLocation() const {
-    assert(Loc.isValid() && "No end-of-path location set yet!");
+    assert(Loc.isValid() && "No report location set yet!");
     return Loc;
   }
 
diff --git a/include/clang/StaticAnalyzer/Core/Checker.h b/include/clang/StaticAnalyzer/Core/Checker.h
index 0dbaab033d2d..cf7cf051d225 100644
--- a/include/clang/StaticAnalyzer/Core/Checker.h
+++ b/include/clang/StaticAnalyzer/Core/Checker.h
@@ -320,18 +320,35 @@ public:
 class PointerEscape {
   template <typename CHECKER>
   static ProgramStateRef
-  _checkPointerEscape(void *checker,
+  _checkPointerEscape(void *Checker,
                      ProgramStateRef State,
                      const InvalidatedSymbols &Escaped,
                      const CallEvent *Call,
                      PointerEscapeKind Kind,
-                    bool IsConst) {
-    if (!IsConst)
-      return ((const CHECKER *)checker)->checkPointerEscape(State,
+                     RegionAndSymbolInvalidationTraits *ETraits) {
+
+    if (!ETraits)
+      return ((const CHECKER *)Checker)->checkPointerEscape(State,
                                                             Escaped,
                                                             Call,
                                                             Kind);
-    return State;
+
+    InvalidatedSymbols RegularEscape;
+    for (InvalidatedSymbols::const_iterator I = Escaped.begin(), 
+                                            E = Escaped.end(); I != E; ++I)
+      if (!ETraits->hasTrait(*I,
+              RegionAndSymbolInvalidationTraits::TK_PreserveContents) &&
+          !ETraits->hasTrait(*I,
+              RegionAndSymbolInvalidationTraits::TK_SuppressEscape))
+        RegularEscape.insert(*I);
+
+    if (RegularEscape.empty())
+      return State;
+
+    return ((const CHECKER *)Checker)->checkPointerEscape(State,
+                                                          RegularEscape,
+                                                          Call,
+                                                          Kind);
   }
 
 public:
@@ -346,18 +363,32 @@ public:
 class ConstPointerEscape {
   template <typename CHECKER>
   static ProgramStateRef
-  _checkConstPointerEscape(void *checker,
+  _checkConstPointerEscape(void *Checker,
                       ProgramStateRef State,
                       const InvalidatedSymbols &Escaped,
                       const CallEvent *Call,
                       PointerEscapeKind Kind,
-                      bool IsConst) {
-    if (IsConst)
-      return ((const CHECKER *)checker)->checkConstPointerEscape(State,
-                                                                 Escaped,
-                                                                 Call,
-                                                                 Kind);
-    return State;
+                      RegionAndSymbolInvalidationTraits *ETraits) {
+
+    if (!ETraits)
+      return State;
+
+    InvalidatedSymbols ConstEscape;
+    for (InvalidatedSymbols::const_iterator I = Escaped.begin(), 
+                                            E = Escaped.end(); I != E; ++I)
+      if (ETraits->hasTrait(*I,
+              RegionAndSymbolInvalidationTraits::TK_PreserveContents) &&
+          !ETraits->hasTrait(*I,
+              RegionAndSymbolInvalidationTraits::TK_SuppressEscape))
+        ConstEscape.insert(*I);
+
+    if (ConstEscape.empty())
+      return State;
+
+    return ((const CHECKER *)Checker)->checkConstPointerEscape(State,
+                                                               ConstEscape,
+                                                               Call,
+                                                               Kind);
   }
 
 public:
@@ -502,10 +533,14 @@ struct ImplicitNullDerefEvent {
 };
 
 /// \brief A helper class which wraps a boolean value set to false by default.
+///
+/// This class should behave exactly like 'bool' except that it doesn't need to
+/// be explicitly initialized.
 struct DefaultBool {
   bool val;
   DefaultBool() : val(false) {}
-  operator bool() const { return val; }
+  /*implicit*/ operator bool&() { return val; }
+  /*implicit*/ operator const bool&() const { return val; }
   DefaultBool &operator=(bool b) { val = b; return *this; }
 };
 
diff --git a/include/clang/StaticAnalyzer/Core/CheckerManager.h b/include/clang/StaticAnalyzer/Core/CheckerManager.h
index b2411e6e6544..8ad67c118f01 100644
--- a/include/clang/StaticAnalyzer/Core/CheckerManager.h
+++ b/include/clang/StaticAnalyzer/Core/CheckerManager.h
@@ -19,7 +19,6 @@
 #include "clang/StaticAnalyzer/Core/PathSensitive/Store.h"
 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.h"
 #include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/FoldingSet.h"
 #include "llvm/ADT/SmallVector.h"
 #include <vector>
 
@@ -366,14 +365,16 @@ public:
   /// \param Escaped The list of escaped symbols.
   /// \param Call The corresponding CallEvent, if the symbols escape as 
   ///        parameters to the given call.
-  /// \param IsConst Specifies if the pointer is const.
+  /// \param Kind The reason of pointer escape.
+  /// \param ITraits Information about invalidation for a particular 
+  ///        region/symbol.
   /// \returns Checkers can modify the state by returning a new one.
   ProgramStateRef 
   runCheckersForPointerEscape(ProgramStateRef State,
                               const InvalidatedSymbols &Escaped,
                               const CallEvent *Call,
                               PointerEscapeKind Kind,
-                              bool IsConst = false);
+                             RegionAndSymbolInvalidationTraits *ITraits);
 
   /// \brief Run checkers for handling assumptions on symbolic values.
   ProgramStateRef runCheckersForEvalAssume(ProgramStateRef state,
@@ -465,7 +466,7 @@ public:
                                      const InvalidatedSymbols &Escaped,
                                      const CallEvent *Call,
                                      PointerEscapeKind Kind,
-                                     bool IsConst)>
+                                     RegionAndSymbolInvalidationTraits *ITraits)>
       CheckPointerEscapeFunc;
   
   typedef CheckerFn<ProgramStateRef (ProgramStateRef,
@@ -581,35 +582,12 @@ private:
   };
   std::vector<StmtCheckerInfo> StmtCheckers;
 
-  struct CachedStmtCheckersKey {
-    unsigned StmtKind;
-    bool IsPreVisit;
-
-    CachedStmtCheckersKey() : StmtKind(0), IsPreVisit(0) { }
-    CachedStmtCheckersKey(unsigned stmtKind, bool isPreVisit)
-      : StmtKind(stmtKind), IsPreVisit(isPreVisit) { }
-
-    static CachedStmtCheckersKey getSentinel() {
-      return CachedStmtCheckersKey(~0U, 0);
-    }
-    unsigned getHashValue() const {
-      llvm::FoldingSetNodeID ID;
-      ID.AddInteger(StmtKind);
-      ID.AddBoolean(IsPreVisit);
-      return ID.ComputeHash();
-    }
-    bool operator==(const CachedStmtCheckersKey &RHS) const {
-      return StmtKind == RHS.StmtKind && IsPreVisit == RHS.IsPreVisit;
-    }
-  };
-  friend struct llvm::DenseMapInfo<CachedStmtCheckersKey>;
-
   typedef SmallVector<CheckStmtFunc, 4> CachedStmtCheckers;
-  typedef llvm::DenseMap<CachedStmtCheckersKey, CachedStmtCheckers>
-      CachedStmtCheckersMapTy;
+  typedef llvm::DenseMap<unsigned, CachedStmtCheckers> CachedStmtCheckersMapTy;
   CachedStmtCheckersMapTy CachedStmtCheckersMap;
 
-  CachedStmtCheckers *getCachedStmtCheckersFor(const Stmt *S, bool isPreVisit);
+  const CachedStmtCheckers &getCachedStmtCheckersFor(const Stmt *S,
+                                                     bool isPreVisit);
 
   std::vector<CheckObjCMessageFunc> PreObjCMessageCheckers;
   std::vector<CheckObjCMessageFunc> PostObjCMessageCheckers;
@@ -659,30 +637,4 @@ private:
 
 } // end clang namespace
 
-namespace llvm {
-  /// Define DenseMapInfo so that CachedStmtCheckersKey can be used as key
-  /// in DenseMap and DenseSets.
-  template <>
-  struct DenseMapInfo<clang::ento::CheckerManager::CachedStmtCheckersKey> {
-    static inline clang::ento::CheckerManager::CachedStmtCheckersKey
-        getEmptyKey() {
-      return clang::ento::CheckerManager::CachedStmtCheckersKey();
-    }
-    static inline clang::ento::CheckerManager::CachedStmtCheckersKey
-        getTombstoneKey() {
-      return clang::ento::CheckerManager::CachedStmtCheckersKey::getSentinel();
-    }
-
-    static unsigned
-        getHashValue(clang::ento::CheckerManager::CachedStmtCheckersKey S) {
-      return S.getHashValue();
-    }
-
-    static bool isEqual(clang::ento::CheckerManager::CachedStmtCheckersKey LHS,
-                       clang::ento::CheckerManager::CachedStmtCheckersKey RHS) {
-      return LHS == RHS;
-    }
-  };
-} // end namespace llvm
-
 #endif
diff --git a/include/clang/StaticAnalyzer/Core/CheckerRegistry.h b/include/clang/StaticAnalyzer/Core/CheckerRegistry.h
index 4557aa40ea80..ca68a74fef96 100644
--- a/include/clang/StaticAnalyzer/Core/CheckerRegistry.h
+++ b/include/clang/StaticAnalyzer/Core/CheckerRegistry.h
@@ -54,10 +54,6 @@
 //
 // For a complete working example, see examples/analyzer-plugin.
 
-
-namespace clang {
-namespace ento {
-
 #ifndef CLANG_ANALYZER_API_VERSION_STRING
 // FIXME: The Clang version string is not particularly granular;
 // the analyzer infrastructure can change a lot between releases.
@@ -67,6 +63,9 @@ namespace ento {
 #define CLANG_ANALYZER_API_VERSION_STRING CLANG_VERSION_STRING
 #endif
 
+namespace clang {
+namespace ento {
+
 class CheckerOptInfo;
 
 /// Manages a set of available checkers for running a static analysis.
diff --git a/include/clang/StaticAnalyzer/Core/PathDiagnosticConsumers.h b/include/clang/StaticAnalyzer/Core/PathDiagnosticConsumers.h
index b856de7dc612..43e9166b3cdc 100644
--- a/include/clang/StaticAnalyzer/Core/PathDiagnosticConsumers.h
+++ b/include/clang/StaticAnalyzer/Core/PathDiagnosticConsumers.h
@@ -27,18 +27,12 @@ namespace ento {
 class PathDiagnosticConsumer;
 typedef std::vector<PathDiagnosticConsumer*> PathDiagnosticConsumers;
 
-#define CREATE_CONSUMER(NAME)\
-void create ## NAME ## DiagnosticConsumer(AnalyzerOptions &AnalyzerOpts,\
-                                          PathDiagnosticConsumers &C,\
-                                          const std::string& prefix,\
-                                          const Preprocessor &PP);
-
-CREATE_CONSUMER(HTML)
-CREATE_CONSUMER(Plist)
-CREATE_CONSUMER(PlistMultiFile)
-CREATE_CONSUMER(TextPath)
-
-#undef CREATE_CONSUMER
+#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATEFN)\
+void CREATEFN(AnalyzerOptions &AnalyzerOpts,\
+              PathDiagnosticConsumers &C,\
+              const std::string &Prefix,\
+              const Preprocessor &PP);
+#include "clang/StaticAnalyzer/Core/Analyses.def"
 
 } // end 'ento' namespace
 } // end 'clang' namespace
diff --git a/include/clang/StaticAnalyzer/Core/PathSensitive/AnalysisManager.h b/include/clang/StaticAnalyzer/Core/PathSensitive/AnalysisManager.h
index 458c8966e79e..d7d83ce8b17d 100644
--- a/include/clang/StaticAnalyzer/Core/PathSensitive/AnalysisManager.h
+++ b/include/clang/StaticAnalyzer/Core/PathSensitive/AnalysisManager.h
@@ -65,6 +65,10 @@ public:
   StoreManagerCreator getStoreManagerCreator() {
     return CreateStoreMgr;
   }
+  
+  AnalyzerOptions& getAnalyzerOptions() {
+    return options;
+  }
 
   ConstraintManagerCreator getConstraintManagerCreator() {
     return CreateConstraintMgr;
diff --git a/include/clang/StaticAnalyzer/Core/PathSensitive/CallEvent.h b/include/clang/StaticAnalyzer/Core/PathSensitive/CallEvent.h
index f990b8dcd0ec..cfaf085b5f34 100644
--- a/include/clang/StaticAnalyzer/Core/PathSensitive/CallEvent.h
+++ b/include/clang/StaticAnalyzer/Core/PathSensitive/CallEvent.h
@@ -228,11 +228,6 @@ public:
     return false;
   }
 
-  /// \brief Returns true if this is a call to a variadic function or method.
-  virtual bool isVariadic() const {
-    return false;
-  }
-
   /// \brief Returns a source range for the entire call, suitable for
   /// outputting in diagnostics.
   virtual SourceRange getSourceRange() const {
@@ -341,6 +336,11 @@ public:
   /// This will return a null QualType if the result type cannot be determined.
   static QualType getDeclaredResultType(const Decl *D);
 
+  /// \brief Returns true if the given decl is known to be variadic.
+  ///
+  /// \p D must not be null.
+  static bool isVariadic(const Decl *D);
+
   // Iterator access to formal parameters and their types.
 private:
   typedef std::const_mem_fun_t<QualType, ParmVarDecl> get_type_fun;
@@ -350,19 +350,13 @@ public:
 
   /// Returns an iterator over the call's formal parameters.
   ///
-  /// If UseDefinitionParams is set, this will return the parameter decls
-  /// used in the callee's definition (suitable for inlining). Most of the
-  /// time it is better to use the decl found by name lookup, which likely
-  /// carries more annotations.
-  ///
   /// Remember that the number of formal parameters may not match the number
   /// of arguments for all calls. However, the first parameter will always
   /// correspond with the argument value returned by \c getArgSVal(0).
   ///
-  /// If the call has no accessible declaration (or definition, if
-  /// \p UseDefinitionParams is set), \c param_begin() will be equal to
-  /// \c param_end().
-  virtual param_iterator param_begin() const =0;
+  /// If the call has no accessible declaration, \c param_begin() will be equal
+  /// to \c param_end().
+  virtual param_iterator param_begin() const = 0;
   /// \sa param_begin()
   virtual param_iterator param_end() const = 0;
 
@@ -423,10 +417,6 @@ public:
     return RuntimeDefinition();
   }
 
-  virtual bool isVariadic() const {
-    return getDecl()->isVariadic();
-  }
-
   virtual bool argumentsMayEscape() const;
 
   virtual void getInitialStackFrameContents(const StackFrameContext *CalleeCtx,
@@ -527,10 +517,6 @@ public:
     return RuntimeDefinition(getBlockDecl());
   }
 
-  virtual bool isVariadic() const {
-    return getBlockDecl()->isVariadic();
-  }
-
   virtual void getInitialStackFrameContents(const StackFrameContext *CalleeCtx,
                                             BindingsTy &Bindings) const;
 
@@ -849,9 +835,6 @@ public:
   virtual const Expr *getArgExpr(unsigned Index) const {
     return getOriginExpr()->getArg(Index);
   }
-  virtual bool isVariadic() const {
-    return getDecl()->isVariadic();
-  }
 
   bool isInstanceMessage() const {
     return getOriginExpr()->isInstanceMessage();
diff --git a/include/clang/StaticAnalyzer/Core/PathSensitive/ExplodedGraph.h b/include/clang/StaticAnalyzer/Core/PathSensitive/ExplodedGraph.h
index edcfc8a6c097..bf17cd807d65 100644
--- a/include/clang/StaticAnalyzer/Core/PathSensitive/ExplodedGraph.h
+++ b/include/clang/StaticAnalyzer/Core/PathSensitive/ExplodedGraph.h
@@ -184,7 +184,7 @@ public:
 
   bool isSink() const { return Succs.getFlag(); }
 
-   bool hasSinglePred() const {
+  bool hasSinglePred() const {
     return (pred_size() == 1);
   }
 
diff --git a/include/clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h b/include/clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h
index 33e4431eb4be..d89dffe63b0a 100644
--- a/include/clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h
+++ b/include/clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h
@@ -203,6 +203,8 @@ public:
 
   void ProcessAutomaticObjDtor(const CFGAutomaticObjDtor D, 
                                ExplodedNode *Pred, ExplodedNodeSet &Dst);
+  void ProcessDeleteDtor(const CFGDeleteDtor D,
+                         ExplodedNode *Pred, ExplodedNodeSet &Dst);
   void ProcessBaseDtor(const CFGBaseDtor D,
                        ExplodedNode *Pred, ExplodedNodeSet &Dst);
   void ProcessMemberDtor(const CFGMemberDtor D,
@@ -476,14 +478,14 @@ protected:
                                               SVal Loc, SVal Val);
   /// Call PointerEscape callback when a value escapes as a result of
   /// region invalidation.
-  /// \param[in] IsConst Specifies that the pointer is const.
+  /// \param[in] ITraits Specifies invalidation traits for regions/symbols.
   ProgramStateRef notifyCheckersOfPointerEscape(
                             ProgramStateRef State,
                             const InvalidatedSymbols *Invalidated,
                             ArrayRef<const MemRegion *> ExplicitRegions,
                             ArrayRef<const MemRegion *> Regions,
                             const CallEvent *Call,
-                            bool IsConst);
+                            RegionAndSymbolInvalidationTraits &ITraits);
 
 public:
   // FIXME: 'tag' should be removed, and a LocationContext should be used
diff --git a/include/clang/StaticAnalyzer/Core/PathSensitive/MemRegion.h b/include/clang/StaticAnalyzer/Core/PathSensitive/MemRegion.h
index 9b4f77dd679f..cc790c1b6b39 100644
--- a/include/clang/StaticAnalyzer/Core/PathSensitive/MemRegion.h
+++ b/include/clang/StaticAnalyzer/Core/PathSensitive/MemRegion.h
@@ -635,12 +635,14 @@ class BlockDataRegion : public TypedRegion {
   friend class MemRegionManager;
   const BlockTextRegion *BC;
   const LocationContext *LC; // Can be null */
+  unsigned BlockCount;
   void *ReferencedVars;
   void *OriginalVars;
 
   BlockDataRegion(const BlockTextRegion *bc, const LocationContext *lc,
-                  const MemRegion *sreg)
+                  unsigned count, const MemRegion *sreg)
   : TypedRegion(sreg, BlockDataRegionKind), BC(bc), LC(lc),
+     BlockCount(count),
     ReferencedVars(0), OriginalVars(0) {}
 
 public:
@@ -692,7 +694,8 @@ public:
   void Profile(llvm::FoldingSetNodeID& ID) const;
     
   static void ProfileRegion(llvm::FoldingSetNodeID&, const BlockTextRegion *,
-                            const LocationContext *, const MemRegion *);
+                            const LocationContext *, unsigned,
+                            const MemRegion *);
     
   static bool classof(const MemRegion* R) {
     return R->getKind() == BlockDataRegionKind;
@@ -1270,7 +1273,13 @@ public:
   ///  argument is allowed to be NULL for cases where we have no known
   ///  context.
   const BlockDataRegion *getBlockDataRegion(const BlockTextRegion *bc,
-                                            const LocationContext *lc = NULL);
+                                            const LocationContext *lc,
+                                            unsigned blockCount);
+
+  /// Create a CXXTempObjectRegion for temporaries which are lifetime-extended
+  /// by static references. This differs from getCXXTempObjectRegion in the
+  /// super-region used.
+  const CXXTempObjectRegion *getCXXStaticTempObjectRegion(const Expr *Ex);
 
 private:
   template <typename RegionTy, typename A1>
@@ -1304,6 +1313,39 @@ private:
 inline ASTContext &MemRegion::getContext() const {
   return getMemRegionManager()->getContext();
 }
+
+//===----------------------------------------------------------------------===//
+// Means for storing region/symbol handling traits.
+//===----------------------------------------------------------------------===//
+
+/// Information about invalidation for a particular region/symbol.
+class RegionAndSymbolInvalidationTraits {
+  typedef unsigned char StorageTypeForKinds;
+  llvm::DenseMap<const MemRegion *, StorageTypeForKinds> MRTraitsMap;
+  llvm::DenseMap<SymbolRef, StorageTypeForKinds> SymTraitsMap;
+
+  typedef llvm::DenseMap<const MemRegion *, StorageTypeForKinds>::const_iterator
+      const_region_iterator;
+  typedef llvm::DenseMap<SymbolRef, StorageTypeForKinds>::const_iterator
+      const_symbol_iterator;
+
+public:
+  /// \brief Describes different invalidation traits.
+  enum InvalidationKinds {
+    /// Tells that a region's contents is not changed.
+    TK_PreserveContents = 0x1,
+    /// Suppress pointer-escaping of a region.
+    TK_SuppressEscape = 0x2
+
+    // Do not forget to extend StorageTypeForKinds if number of traits exceed 
+    // the number of bits StorageTypeForKinds can store.
+  };
+
+  void setTrait(SymbolRef Sym, InvalidationKinds IK);
+  void setTrait(const MemRegion *MR, InvalidationKinds IK);
+  bool hasTrait(SymbolRef Sym, InvalidationKinds IK);
+  bool hasTrait(const MemRegion *MR, InvalidationKinds IK);
+};
   
 } // end GR namespace
 
diff --git a/include/clang/StaticAnalyzer/Core/PathSensitive/ProgramState.h b/include/clang/StaticAnalyzer/Core/PathSensitive/ProgramState.h
index 42ef1db45591..03739ed9284d 100644
--- a/include/clang/StaticAnalyzer/Core/PathSensitive/ProgramState.h
+++ b/include/clang/StaticAnalyzer/Core/PathSensitive/ProgramState.h
@@ -232,22 +232,21 @@ public:
   /// \param IS the set of invalidated symbols.
   /// \param Call if non-null, the invalidated regions represent parameters to
   ///        the call and should be considered directly invalidated.
-  /// \param ConstRegions the set of regions whose contents are accessible,
-  ///        even though the regions themselves should not be invalidated.
+  /// \param ITraits information about special handling for a particular 
+  ///        region/symbol.
   ProgramStateRef
   invalidateRegions(ArrayRef<const MemRegion *> Regions, const Expr *E,
                     unsigned BlockCount, const LocationContext *LCtx,
                     bool CausesPointerEscape, InvalidatedSymbols *IS = 0,
                     const CallEvent *Call = 0,
-                    ArrayRef<const MemRegion *> ConstRegions =
-                      ArrayRef<const MemRegion *>()) const;
+                    RegionAndSymbolInvalidationTraits *ITraits = 0) const;
 
   ProgramStateRef
   invalidateRegions(ArrayRef<SVal> Regions, const Expr *E,
                     unsigned BlockCount, const LocationContext *LCtx,
                     bool CausesPointerEscape, InvalidatedSymbols *IS = 0,
                     const CallEvent *Call = 0,
-                    ArrayRef<SVal> ConstRegions = ArrayRef<SVal>()) const;
+                    RegionAndSymbolInvalidationTraits *ITraits = 0) const;
 
   /// enterStackFrame - Returns the state for entry to the given stack frame,
   ///  preserving the current state.
@@ -425,9 +424,9 @@ private:
                         const Expr *E, unsigned BlockCount,
                         const LocationContext *LCtx,
                         bool ResultsInSymbolEscape,
-                        InvalidatedSymbols &IS,
-                        const CallEvent *Call,
-                        ArrayRef<SVal> ConstValues) const;
+                        InvalidatedSymbols *IS,
+                        RegionAndSymbolInvalidationTraits *HTraits,
+                        const CallEvent *Call) const;
 };
 
 //===----------------------------------------------------------------------===//
@@ -516,8 +515,8 @@ public:
 
 public:
 
-  SVal ArrayToPointer(Loc Array) {
-    return StoreMgr->ArrayToPointer(Array);
+  SVal ArrayToPointer(Loc Array, QualType ElementTy) {
+    return StoreMgr->ArrayToPointer(Array, ElementTy);
   }
 
   // Methods that manipulate the GDM.
@@ -798,7 +797,7 @@ CB ProgramState::scanReachableSymbols(const MemRegion * const *beg,
 /// A Utility class that allows to visit the reachable symbols using a custom
 /// SymbolVisitor.
 class ScanReachableSymbols {
-  typedef llvm::DenseMap<const void*, unsigned> VisitedItems;
+  typedef llvm::DenseSet<const void*> VisitedItems;
 
   VisitedItems visited;
   ProgramStateRef state;
@@ -808,6 +807,7 @@ public:
   ScanReachableSymbols(ProgramStateRef st, SymbolVisitor& v)
     : state(st), visitor(v) {}
 
+  bool scan(nonloc::LazyCompoundVal val);
   bool scan(nonloc::CompoundVal val);
   bool scan(SVal val);
   bool scan(const MemRegion *R);
diff --git a/include/clang/StaticAnalyzer/Core/PathSensitive/SValBuilder.h b/include/clang/StaticAnalyzer/Core/PathSensitive/SValBuilder.h
index bbb56885af04..c5d0a92cabdd 100644
--- a/include/clang/StaticAnalyzer/Core/PathSensitive/SValBuilder.h
+++ b/include/clang/StaticAnalyzer/Core/PathSensitive/SValBuilder.h
@@ -200,7 +200,8 @@ public:
   DefinedSVal getFunctionPointer(const FunctionDecl *func);
   
   DefinedSVal getBlockPointer(const BlockDecl *block, CanQualType locTy,
-                              const LocationContext *locContext);
+                              const LocationContext *locContext,
+                              unsigned blockCount);
 
   /// Returns the value of \p E, if it can be determined in a non-path-sensitive
   /// manner.
diff --git a/include/clang/StaticAnalyzer/Core/PathSensitive/SVals.h b/include/clang/StaticAnalyzer/Core/PathSensitive/SVals.h
index 326e784e83d4..5a426ef00197 100644
--- a/include/clang/StaticAnalyzer/Core/PathSensitive/SVals.h
+++ b/include/clang/StaticAnalyzer/Core/PathSensitive/SVals.h
@@ -290,7 +290,7 @@ public:
 
   static inline bool isLocType(QualType T) {
     return T->isAnyPointerType() || T->isBlockPointerType() || 
-           T->isReferenceType();
+           T->isReferenceType() || T->isNullPtrType();
   }
 
 private:
diff --git a/include/clang/StaticAnalyzer/Core/PathSensitive/Store.h b/include/clang/StaticAnalyzer/Core/PathSensitive/Store.h
index b219495d5f06..530dae59892a 100644
--- a/include/clang/StaticAnalyzer/Core/PathSensitive/Store.h
+++ b/include/clang/StaticAnalyzer/Core/PathSensitive/Store.h
@@ -111,7 +111,7 @@ public:
 
   /// ArrayToPointer - Used by ExprEngine::VistCast to handle implicit
   ///  conversions between arrays and pointers.
-  virtual SVal ArrayToPointer(Loc Array) = 0;
+  virtual SVal ArrayToPointer(Loc Array, QualType ElementTy) = 0;
 
   /// Evaluates a chain of derived-to-base casts through the path specified in
   /// \p Cast.
@@ -164,8 +164,6 @@ public:
   ///  the given regions. Optionally, invalidates non-static globals as well.
   /// \param[in] store The initial store
   /// \param[in] Values The values to invalidate.
-  /// \param[in] ConstValues The values to invalidate; these are known to be
-  ///   const, so only regions accesible from them should be invalidated.
   /// \param[in] E The current statement being evaluated. Used to conjure
   ///   symbols to mark the values of invalidated regions.
   /// \param[in] Count The current block count. Used to conjure
@@ -174,13 +172,10 @@ public:
   ///   globals should get invalidated.
   /// \param[in,out] IS A set to fill with any symbols that are no longer
   ///   accessible. Pass \c NULL if this information will not be used.
-  /// \param[in,out] ConstIS A set to fill with any symbols corresponding to
-  ///   the ConstValues.
+  /// \param[in] ITraits Information about invalidation for a particular 
+  ///   region/symbol.
   /// \param[in,out] InvalidatedTopLevel A vector to fill with regions
-  ////  explicitely being invalidated. Pass \c NULL if this
-  ///   information will not be used.
-  /// \param[in,out] InvalidatedTopLevelConst A vector to fill with const 
-  ////  regions explicitely being invalidated. Pass \c NULL if this
+  ////  explicitly being invalidated. Pass \c NULL if this
   ///   information will not be used.
   /// \param[in,out] Invalidated A vector to fill with any regions being
   ///   invalidated. This should include any regions explicitly invalidated
@@ -188,14 +183,12 @@ public:
   ///   information will not be used.
   virtual StoreRef invalidateRegions(Store store,
                                   ArrayRef<SVal> Values,
-                                  ArrayRef<SVal> ConstValues,
                                   const Expr *E, unsigned Count,
                                   const LocationContext *LCtx,
                                   const CallEvent *Call,
                                   InvalidatedSymbols &IS,
-                                  InvalidatedSymbols &ConstIS,
+                                  RegionAndSymbolInvalidationTraits &ITraits,
                                   InvalidatedRegions *InvalidatedTopLevel,
-                                  InvalidatedRegions *InvalidatedTopLevelConst,
                                   InvalidatedRegions *Invalidated) = 0;
 
   /// enterStackFrame - Let the StoreManager to do something when execution
@@ -231,7 +224,7 @@ public:
 
     bool HandleBinding(StoreManager& SMgr, Store store, const MemRegion* R,
                        SVal val);
-    operator bool() { return First && Binding; }
+    LLVM_EXPLICIT operator bool() { return First && Binding; }
     const MemRegion *getRegion() { return Binding; }
   };
 
diff --git a/include/clang/StaticAnalyzer/Core/PathSensitive/SubEngine.h b/include/clang/StaticAnalyzer/Core/PathSensitive/SubEngine.h
index d4100634a785..f653c70a30f3 100644
--- a/include/clang/StaticAnalyzer/Core/PathSensitive/SubEngine.h
+++ b/include/clang/StaticAnalyzer/Core/PathSensitive/SubEngine.h
@@ -134,7 +134,7 @@ public:
                            ArrayRef<const MemRegion *> ExplicitRegions,
                            ArrayRef<const MemRegion *> Regions,
                            const CallEvent *Call,
-                           bool IsConst = false) = 0;
+                           RegionAndSymbolInvalidationTraits &HTraits) = 0;
 
   /// printState - Called by ProgramStateManager to print checker-specific data.
   virtual void printState(raw_ostream &Out, ProgramStateRef State,
diff --git a/include/clang/Tooling/ArgumentsAdjusters.h b/include/clang/Tooling/ArgumentsAdjusters.h
index 492ddd2b0078..71acef8650fe 100644
--- a/include/clang/Tooling/ArgumentsAdjusters.h
+++ b/include/clang/Tooling/ArgumentsAdjusters.h
@@ -52,6 +52,12 @@ class ClangSyntaxOnlyAdjuster : public ArgumentsAdjuster {
   virtual CommandLineArguments Adjust(const CommandLineArguments &Args);
 };
 
+/// \brief An argument adjuster which removes output-related command line
+/// arguments.
+class ClangStripOutputAdjuster : public ArgumentsAdjuster {
+  virtual CommandLineArguments Adjust(const CommandLineArguments &Args);
+};
+
 } // end namespace tooling
 } // end namespace clang
 
diff --git a/include/clang/Tooling/CommonOptionsParser.h b/include/clang/Tooling/CommonOptionsParser.h
index 677593413948..eaffe4363515 100644
--- a/include/clang/Tooling/CommonOptionsParser.h
+++ b/include/clang/Tooling/CommonOptionsParser.h
@@ -64,7 +64,7 @@ public:
   /// This constructor can change argc and argv contents, e.g. consume
   /// command-line options used for creating FixedCompilationDatabase.
   /// This constructor exits program in case of error.
-  CommonOptionsParser(int &argc, const char **argv);
+  CommonOptionsParser(int &argc, const char **argv, const char *Overview = 0);
 
   /// Returns a reference to the loaded compilations database.
   CompilationDatabase &getCompilations() {
diff --git a/include/clang/Tooling/CompilationDatabase.h b/include/clang/Tooling/CompilationDatabase.h
index 7a8054ffc3a4..8cca3296f94d 100644
--- a/include/clang/Tooling/CompilationDatabase.h
+++ b/include/clang/Tooling/CompilationDatabase.h
@@ -50,6 +50,16 @@ struct CompileCommand {
 
   /// \brief The command line that was executed.
   std::vector<std::string> CommandLine;
+
+  /// \brief An optional mapping from each file's path to its content for all
+  /// files needed for the compilation that are not available via the file
+  /// system.
+  ///
+  /// Note that a tool implementation is required to fall back to the file
+  /// system if a source file is not provided in the mapped sources, as
+  /// compilation databases will usually not provide all files in mapped sources
+  /// for performance reasons.
+  std::vector<std::pair<std::string, std::string> > MappedSources;
 };
 
 /// \brief Interface for compilation databases.
@@ -108,6 +118,10 @@ public:
 
   /// \brief Returns all compile commands for all the files in the compilation
   /// database.
+  ///
+  /// FIXME: Add a layer in Tooling that provides an interface to run a tool
+  /// over all files in a compilation database. Not all build systems have the
+  /// ability to provide a feasible implementation for \c getAllCompileCommands.
   virtual std::vector<CompileCommand> getAllCompileCommands() const = 0;
 };
 
diff --git a/include/clang/Tooling/Refactoring.h b/include/clang/Tooling/Refactoring.h
index 079ce7420db9..43ec9acdb3bf 100644
--- a/include/clang/Tooling/Refactoring.h
+++ b/include/clang/Tooling/Refactoring.h
@@ -32,6 +32,37 @@ class SourceLocation;
 
 namespace tooling {
 
+/// \brief A source range independent of the \c SourceManager.
+class Range {
+public:
+  Range() : Offset(0), Length(0) {}
+  Range(unsigned Offset, unsigned Length) : Offset(Offset), Length(Length) {}
+
+  /// \brief Accessors.
+  /// @{
+  unsigned getOffset() const { return Offset; }
+  unsigned getLength() const { return Length; }
+  /// @}
+
+  /// \name Range Predicates
+  /// @{
+  /// \brief Whether this range overlaps with \p RHS or not.
+  bool overlapsWith(Range RHS) const {
+    return Offset + Length > RHS.Offset && Offset < RHS.Offset + RHS.Length;
+  }
+
+  /// \brief Whether this range contains \p RHS or not.
+  bool contains(Range RHS) const {
+    return RHS.Offset >= Offset &&
+           (RHS.Offset + RHS.Length) <= (Offset + Length);
+  }
+  /// @}
+
+private:
+  unsigned Offset;
+  unsigned Length;
+};
+
 /// \brief A text replacement.
 ///
 /// Represents a SourceManager independent replacement of a range of text in a
@@ -72,8 +103,8 @@ public:
   /// \brief Accessors.
   /// @{
   StringRef getFilePath() const { return FilePath; }
-  unsigned getOffset() const { return Offset; }
-  unsigned getLength() const { return Length; }
+  unsigned getOffset() const { return ReplacementRange.getOffset(); }
+  unsigned getLength() const { return ReplacementRange.getLength(); }
   StringRef getReplacementText() const { return ReplacementText; }
   /// @}
 
@@ -83,12 +114,6 @@ public:
   /// \brief Returns a human readable string representation.
   std::string toString() const;
 
-  /// \brief Comparator to be able to use Replacement in std::set for uniquing.
-  class Less {
-  public:
-    bool operator()(const Replacement &R1, const Replacement &R2) const;
-  };
-
  private:
   void setFromSourceLocation(SourceManager &Sources, SourceLocation Start,
                              unsigned Length, StringRef ReplacementText);
@@ -96,14 +121,27 @@ public:
                           StringRef ReplacementText);
 
   std::string FilePath;
-  unsigned Offset;
-  unsigned Length;
+  Range ReplacementRange;
   std::string ReplacementText;
 };
 
+/// \brief Less-than operator between two Replacements.
+bool operator<(const Replacement &LHS, const Replacement &RHS);
+
+/// \brief Equal-to operator between two Replacements.
+bool operator==(const Replacement &LHS, const Replacement &RHS);
+
 /// \brief A set of Replacements.
 /// FIXME: Change to a vector and deduplicate in the RefactoringTool.
-typedef std::set<Replacement, Replacement::Less> Replacements;
+typedef std::set<Replacement> Replacements;
+
+/// \brief Apply all replacements in \p Replaces to the Rewriter \p Rewrite.
+///
+/// Replacement applications happen independently of the success of
+/// other applications.
+///
+/// \returns true if all replacements apply. false otherwise.
+bool applyAllReplacements(const Replacements &Replaces, Rewriter &Rewrite);
 
 /// \brief Apply all replacements in \p Replaces to the Rewriter \p Rewrite.
 ///
@@ -111,7 +149,48 @@ typedef std::set<Replacement, Replacement::Less> Replacements;
 /// other applications.
 ///
 /// \returns true if all replacements apply. false otherwise.
-bool applyAllReplacements(Replacements &Replaces, Rewriter &Rewrite);
+bool applyAllReplacements(const std::vector<Replacement> &Replaces,
+                          Rewriter &Rewrite);
+
+/// \brief Applies all replacements in \p Replaces to \p Code.
+///
+/// This completely ignores the path stored in each replacement. If one or more
+/// replacements cannot be applied, this returns an empty \c string.
+std::string applyAllReplacements(StringRef Code, const Replacements &Replaces);
+
+/// \brief Calculates how a code \p Position is shifted when \p Replaces are
+/// applied.
+unsigned shiftedCodePosition(const Replacements& Replaces, unsigned Position);
+
+/// \brief Calculates how a code \p Position is shifted when \p Replaces are
+/// applied.
+///
+/// \pre Replaces[i].getOffset() <= Replaces[i+1].getOffset().
+unsigned shiftedCodePosition(const std::vector<Replacement> &Replaces,
+                             unsigned Position);
+
+/// \brief Removes duplicate Replacements and reports if Replacements conflict
+/// with one another.
+///
+/// \post Replaces[i].getOffset() <= Replaces[i+1].getOffset().
+///
+/// This function sorts \p Replaces so that conflicts can be reported simply by
+/// offset into \p Replaces and number of elements in the conflict.
+void deduplicate(std::vector<Replacement> &Replaces,
+                 std::vector<Range> &Conflicts);
+
+/// \brief Collection of Replacements generated from a single translation unit.
+struct TranslationUnitReplacements {
+  /// Name of the main source for the translation unit.
+  std::string MainSourceFile;
+
+  /// A freeform chunk of text to describe the context of the replacements.
+  /// Will be printed, for example, when detecting conflicts during replacement
+  /// deduplication.
+  std::string Context;
+
+  std::vector<Replacement> Replacements;
+};
 
 /// \brief A tool to run refactorings.
 ///
diff --git a/include/clang/Tooling/ReplacementsYaml.h b/include/clang/Tooling/ReplacementsYaml.h
new file mode 100644
index 000000000000..18d3259d7058
--- /dev/null
+++ b/include/clang/Tooling/ReplacementsYaml.h
@@ -0,0 +1,88 @@
+//===-- ReplacementsYaml.h -- Serialiazation for Replacements ---*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// \brief This file defines the structure of a YAML document for serializing
+/// replacements.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLING_REPLACEMENTS_YAML_H
+#define LLVM_CLANG_TOOLING_REPLACEMENTS_YAML_H
+
+#include "clang/Tooling/Refactoring.h"
+#include "llvm/Support/YAMLTraits.h"
+#include <vector>
+#include <string>
+
+LLVM_YAML_IS_SEQUENCE_VECTOR(clang::tooling::Replacement)
+
+namespace llvm {
+namespace yaml {
+
+/// \brief ScalarTraits to read/write std::string objects.
+template <> struct ScalarTraits<std::string> {
+  static void output(const std::string &Val, void *, llvm::raw_ostream &Out) {
+    Out << Val;
+  }
+
+  static StringRef input(StringRef Scalar, void *, std::string &Val) {
+    Val = Scalar;
+    return StringRef();
+  }
+};
+
+/// \brief Specialized MappingTraits to describe how a Replacement is
+/// (de)serialized.
+template <> struct MappingTraits<clang::tooling::Replacement> {
+  /// \brief Helper to (de)serialize a Replacement since we don't have direct
+  /// access to its data members.
+  struct NormalizedReplacement {
+    NormalizedReplacement(const IO &)
+        : FilePath(""), Offset(0), Length(0), ReplacementText("") {}
+
+    NormalizedReplacement(const IO &, const clang::tooling::Replacement &R)
+        : FilePath(R.getFilePath()), Offset(R.getOffset()),
+          Length(R.getLength()), ReplacementText(R.getReplacementText()) {}
+
+    clang::tooling::Replacement denormalize(const IO &) {
+      return clang::tooling::Replacement(FilePath, Offset, Length,
+                                         ReplacementText);
+    }
+
+    std::string FilePath;
+    unsigned int Offset;
+    unsigned int Length;
+    std::string ReplacementText;
+  };
+
+  static void mapping(IO &Io, clang::tooling::Replacement &R) {
+    MappingNormalization<NormalizedReplacement, clang::tooling::Replacement>
+    Keys(Io, R);
+    Io.mapRequired("FilePath", Keys->FilePath);
+    Io.mapRequired("Offset", Keys->Offset);
+    Io.mapRequired("Length", Keys->Length);
+    Io.mapRequired("ReplacementText", Keys->ReplacementText);
+  }
+};
+
+/// \brief Specialized MappingTraits to describe how a
+/// TranslationUnitReplacements is (de)serialized.
+template <> struct MappingTraits<clang::tooling::TranslationUnitReplacements> {
+  static void mapping(IO &Io,
+                      clang::tooling::TranslationUnitReplacements &Doc) {
+    Io.mapRequired("MainSourceFile", Doc.MainSourceFile);
+    Io.mapOptional("Context", Doc.Context, std::string());
+    Io.mapRequired("Replacements", Doc.Replacements);
+  }
+};
+} // end namespace yaml
+} // end namespace llvm
+
+#endif // LLVM_CLANG_TOOLING_REPLACEMENTS_YAML_H
diff --git a/include/clang/Tooling/Tooling.h b/include/clang/Tooling/Tooling.h
index 27e5a0af2573..de507a7a8b25 100644
--- a/include/clang/Tooling/Tooling.h
+++ b/include/clang/Tooling/Tooling.h
@@ -30,6 +30,7 @@
 #ifndef LLVM_CLANG_TOOLING_TOOLING_H
 #define LLVM_CLANG_TOOLING_TOOLING_H
 
+#include "clang/Basic/Diagnostic.h"
 #include "clang/Basic/FileManager.h"
 #include "clang/Basic/LLVM.h"
 #include "clang/Driver/Util.h"
@@ -53,11 +54,34 @@ class FrontendAction;
 
 namespace tooling {
 
+/// \brief Interface to process a clang::CompilerInvocation.
+///
+/// If your tool is based on FrontendAction, you should be deriving from
+/// FrontendActionFactory instead.
+class ToolAction {
+public:
+  virtual ~ToolAction();
+
+  /// \brief Perform an action for an invocation.
+  virtual bool runInvocation(clang::CompilerInvocation *Invocation,
+                             FileManager *Files,
+                             DiagnosticConsumer *DiagConsumer) = 0;
+};
+
 /// \brief Interface to generate clang::FrontendActions.
-class FrontendActionFactory {
+///
+/// Having a factory interface allows, for example, a new FrontendAction to be
+/// created for each translation unit processed by ClangTool.  This class is
+/// also a ToolAction which uses the FrontendActions created by create() to
+/// process each translation unit.
+class FrontendActionFactory : public ToolAction {
 public:
   virtual ~FrontendActionFactory();
 
+  /// \brief Invokes the compiler with a FrontendAction created by create().
+  bool runInvocation(clang::CompilerInvocation *Invocation, FileManager *Files,
+                     DiagnosticConsumer *DiagConsumer);
+
   /// \brief Returns a new clang::FrontendAction.
   ///
   /// The caller takes ownership of the returned action.
@@ -66,7 +90,7 @@ public:
 
 /// \brief Returns a new FrontendActionFactory for a given type.
 ///
-/// T must extend clang::FrontendAction.
+/// T must derive from clang::FrontendAction.
 ///
 /// Example:
 /// FrontendActionFactory *Factory =
@@ -74,12 +98,22 @@ public:
 template <typename T>
 FrontendActionFactory *newFrontendActionFactory();
 
-/// \brief Called at the end of each source file when used with
-/// \c newFrontendActionFactory.
-class EndOfSourceFileCallback {
+/// \brief Callbacks called before and after each source file processed by a
+/// FrontendAction created by the FrontedActionFactory returned by \c
+/// newFrontendActionFactory.
+class SourceFileCallbacks {
 public:
-  virtual ~EndOfSourceFileCallback() {}
-  virtual void run() = 0;
+  virtual ~SourceFileCallbacks() {}
+
+  /// \brief Called before a source file is processed by a FrontEndAction.
+  /// \see clang::FrontendAction::BeginSourceFileAction
+  virtual bool handleBeginSource(CompilerInstance &CI, StringRef Filename) {
+    return true;
+  }
+
+  /// \brief Called after a source file is processed by a FrontendAction.
+  /// \see clang::FrontendAction::EndSourceFileAction
+  virtual void handleEndSource() {}
 };
 
 /// \brief Returns a new FrontendActionFactory for any type that provides an
@@ -95,7 +129,7 @@ public:
 ///   newFrontendActionFactory(&Factory);
 template <typename FactoryT>
 inline FrontendActionFactory *newFrontendActionFactory(
-    FactoryT *ConsumerFactory, EndOfSourceFileCallback *EndCallback = NULL);
+    FactoryT *ConsumerFactory, SourceFileCallbacks *Callbacks = NULL);
 
 /// \brief Runs (and deletes) the tool on 'Code' with the -fsyntax-only flag.
 ///
@@ -120,6 +154,26 @@ bool runToolOnCodeWithArgs(clang::FrontendAction *ToolAction, const Twine &Code,
                            const std::vector<std::string> &Args,
                            const Twine &FileName = "input.cc");
 
+/// \brief Builds an AST for 'Code'.
+///
+/// \param Code C++ code.
+/// \param FileName The file name which 'Code' will be mapped as.
+///
+/// \return The resulting AST or null if an error occurred.
+ASTUnit *buildASTFromCode(const Twine &Code,
+                          const Twine &FileName = "input.cc");
+
+/// \brief Builds an AST for 'Code' with additional flags.
+///
+/// \param Code C++ code.
+/// \param Args Additional flags to pass on.
+/// \param FileName The file name which 'Code' will be mapped as.
+///
+/// \return The resulting AST or null if an error occurred.
+ASTUnit *buildASTFromCodeWithArgs(const Twine &Code,
+                                  const std::vector<std::string> &Args,
+                                  const Twine &FileName = "input.cc");
+
 /// \brief Utility to run a FrontendAction in a single clang invocation.
 class ToolInvocation {
  public:
@@ -129,12 +183,25 @@ class ToolInvocation {
   /// uses its binary name (CommandLine[0]) to locate its builtin headers.
   /// Callers have to ensure that they are installed in a compatible location
   /// (see clang driver implementation) or mapped in via mapVirtualFile.
-  /// \param ToolAction The action to be executed. Class takes ownership.
+  /// \param FAction The action to be executed. Class takes ownership.
   /// \param Files The FileManager used for the execution. Class does not take
   /// ownership.
-  ToolInvocation(ArrayRef<std::string> CommandLine, FrontendAction *ToolAction,
+  ToolInvocation(ArrayRef<std::string> CommandLine, FrontendAction *FAction,
+                 FileManager *Files);
+
+  /// \brief Create a tool invocation.
+  ///
+  /// \param CommandLine The command line arguments to clang.
+  /// \param Action The action to be executed.
+  /// \param Files The FileManager used for the execution.
+  ToolInvocation(ArrayRef<std::string> CommandLine, ToolAction *Action,
                  FileManager *Files);
 
+  ~ToolInvocation();
+
+  /// \brief Set a \c DiagnosticConsumer to use during parsing.
+  void setDiagnosticConsumer(DiagnosticConsumer *DiagConsumer);
+
   /// \brief Map a virtual file to be used while running the tool.
   ///
   /// \param FilePath The path at which the content will be mapped.
@@ -154,10 +221,12 @@ class ToolInvocation {
                      clang::CompilerInvocation *Invocation);
 
   std::vector<std::string> CommandLine;
-  OwningPtr<FrontendAction> ToolAction;
+  ToolAction *Action;
+  bool OwnsAction;
   FileManager *Files;
   // Maps <file name> -> <file content>.
   llvm::StringMap<StringRef> MappedFileContents;
+  DiagnosticConsumer *DiagConsumer;
 };
 
 /// \brief Utility to run a FrontendAction over a set of files.
@@ -165,8 +234,8 @@ class ToolInvocation {
 /// This class is written to be usable for command line utilities.
 /// By default the class uses ClangSyntaxOnlyAdjuster to modify
 /// command line arguments before the arguments are used to run
-/// a frontend action. One could install another command line
-/// arguments adjuster by call setArgumentsAdjuster() method.
+/// a frontend action. One could install an additional command line
+/// arguments adjuster by calling the appendArgumentsAdjuster() method.
 class ClangTool {
  public:
   /// \brief Constructs a clang tool to run over a list of files.
@@ -178,7 +247,10 @@ class ClangTool {
   ClangTool(const CompilationDatabase &Compilations,
             ArrayRef<std::string> SourcePaths);
 
-  virtual ~ClangTool() {}
+  virtual ~ClangTool() { clearArgumentsAdjusters(); }
+
+  /// \brief Set a \c DiagnosticConsumer to use during parsing.
+  void setDiagnosticConsumer(DiagnosticConsumer *DiagConsumer);
 
   /// \brief Map a virtual file to be used while running the tool.
   ///
@@ -189,29 +261,45 @@ class ClangTool {
   /// \brief Install command line arguments adjuster.
   ///
   /// \param Adjuster Command line arguments adjuster.
+  //
+  /// FIXME: Function is deprecated. Use (clear/append)ArgumentsAdjuster instead.
+  /// Remove it once all callers are gone.
   void setArgumentsAdjuster(ArgumentsAdjuster *Adjuster);
 
-  /// Runs a frontend action over all files specified in the command line.
+  /// \brief Append a command line arguments adjuster to the adjuster chain.
+  ///
+  /// \param Adjuster An argument adjuster, which will be run on the output of
+  ///        previous argument adjusters.
+  void appendArgumentsAdjuster(ArgumentsAdjuster *Adjuster);
+
+  /// \brief Clear the command line arguments adjuster chain.
+  void clearArgumentsAdjusters();
+
+  /// Runs an action over all files specified in the command line.
   ///
-  /// \param ActionFactory Factory generating the frontend actions. The function
-  /// takes ownership of this parameter. A new action is generated for every
-  /// processed translation unit.
-  virtual int run(FrontendActionFactory *ActionFactory);
+  /// \param Action Tool action.
+  int run(ToolAction *Action);
+
+  /// \brief Create an AST for each file specified in the command line and
+  /// append them to ASTs.
+  int buildASTs(std::vector<ASTUnit *> &ASTs);
 
   /// \brief Returns the file manager used in the tool.
   ///
   /// The file manager is shared between all translation units.
-  FileManager &getFiles() { return Files; }
+  FileManager &getFiles() { return *Files; }
 
  private:
   // We store compile commands as pair (file name, compile command).
   std::vector< std::pair<std::string, CompileCommand> > CompileCommands;
 
-  FileManager Files;
+  llvm::IntrusiveRefCntPtr<FileManager> Files;
   // Contains a list of pairs (<file name>, <file content>).
   std::vector< std::pair<StringRef, StringRef> > MappedFileContents;
 
-  OwningPtr<ArgumentsAdjuster> ArgsAdjuster;
+  SmallVector<ArgumentsAdjuster *, 2> ArgsAdjusters;
+
+  DiagnosticConsumer *DiagConsumer;
 };
 
 template <typename T>
@@ -226,23 +314,23 @@ FrontendActionFactory *newFrontendActionFactory() {
 
 template <typename FactoryT>
 inline FrontendActionFactory *newFrontendActionFactory(
-    FactoryT *ConsumerFactory, EndOfSourceFileCallback *EndCallback) {
+    FactoryT *ConsumerFactory, SourceFileCallbacks *Callbacks) {
   class FrontendActionFactoryAdapter : public FrontendActionFactory {
   public:
     explicit FrontendActionFactoryAdapter(FactoryT *ConsumerFactory,
-                                          EndOfSourceFileCallback *EndCallback)
-      : ConsumerFactory(ConsumerFactory), EndCallback(EndCallback) {}
+                                          SourceFileCallbacks *Callbacks)
+      : ConsumerFactory(ConsumerFactory), Callbacks(Callbacks) {}
 
     virtual clang::FrontendAction *create() {
-      return new ConsumerFactoryAdaptor(ConsumerFactory, EndCallback);
+      return new ConsumerFactoryAdaptor(ConsumerFactory, Callbacks);
     }
 
   private:
     class ConsumerFactoryAdaptor : public clang::ASTFrontendAction {
     public:
       ConsumerFactoryAdaptor(FactoryT *ConsumerFactory,
-                             EndOfSourceFileCallback *EndCallback)
-        : ConsumerFactory(ConsumerFactory), EndCallback(EndCallback) {}
+                             SourceFileCallbacks *Callbacks)
+        : ConsumerFactory(ConsumerFactory), Callbacks(Callbacks) {}
 
       clang::ASTConsumer *CreateASTConsumer(clang::CompilerInstance &,
                                             StringRef) {
@@ -250,21 +338,29 @@ inline FrontendActionFactory *newFrontendActionFactory(
       }
 
     protected:
-      virtual void EndSourceFileAction() {
-        if (EndCallback != NULL)
-          EndCallback->run();
+      virtual bool BeginSourceFileAction(CompilerInstance &CI,
+                                         StringRef Filename) LLVM_OVERRIDE {
+        if (!clang::ASTFrontendAction::BeginSourceFileAction(CI, Filename))
+          return false;
+        if (Callbacks != NULL)
+          return Callbacks->handleBeginSource(CI, Filename);
+        return true;
+      }
+      virtual void EndSourceFileAction() LLVM_OVERRIDE {
+        if (Callbacks != NULL)
+          Callbacks->handleEndSource();
         clang::ASTFrontendAction::EndSourceFileAction();
       }
 
     private:
       FactoryT *ConsumerFactory;
-      EndOfSourceFileCallback *EndCallback;
+      SourceFileCallbacks *Callbacks;
     };
     FactoryT *ConsumerFactory;
-    EndOfSourceFileCallback *EndCallback;
+    SourceFileCallbacks *Callbacks;
   };
 
-  return new FrontendActionFactoryAdapter(ConsumerFactory, EndCallback);
+  return new FrontendActionFactoryAdapter(ConsumerFactory, Callbacks);
 }
 
 /// \brief Returns the absolute path of \c File, by prepending it with
@@ -275,10 +371,8 @@ inline FrontendActionFactory *newFrontendActionFactory(
 /// Otherwise, the returned path will contain the literal path-concatenation of
 /// the current directory and \c File.
 ///
-/// The difference to llvm::sys::fs::make_absolute is that we prefer
-/// ::getenv("PWD") if available.
-/// FIXME: Make this functionality available from llvm::sys::fs and delete
-///        this function.
+/// The difference to llvm::sys::fs::make_absolute is the canonicalization this
+/// does by removing "./" and computing native paths.
 ///
 /// \param File Either an absolute or relative path.
 std::string getAbsolutePath(StringRef File);