Vendor import of clang trunk r126079:vendor/clang/clang-r126079

http://llvm.org/svn/llvm-project/cfe/trunk@126079

6 files changed, 123 insertions, 58 deletions

diff --git a/tools/driver/CMakeLists.txt b/tools/driver/CMakeLists.txt
index ec6e9c6e8026..6dc47d656cf9 100644
--- a/tools/driver/CMakeLists.txt
+++ b/tools/driver/CMakeLists.txt
@@ -1,20 +1,20 @@
-set(LLVM_NO_RTTI 1)
-
 set( LLVM_USED_LIBS
-  clangFrontendTool
-  clangFrontend
-  clangDriver
-  clangSerialization
-  clangCodeGen
-  clangParse
-  clangSema
-  clangChecker
+  clangAST
   clangAnalysis
+  clangBasic
+  clangCodeGen
+  clangDriver
+  clangFrontend
+  clangFrontendTool
   clangIndex
-  clangRewrite
-  clangAST
   clangLex
-  clangBasic
+  clangParse
+  clangRewrite
+  clangSema
+  clangSerialization
+  clangStaticAnalyzerFrontend
+  clangStaticAnalyzerCheckers
+  clangStaticAnalyzerCore
   )
 
 set( LLVM_LINK_COMPONENTS
@@ -35,20 +35,22 @@ add_clang_executable(clang
 
 if(UNIX)
   set(CLANGXX_LINK_OR_COPY create_symlink)
-  set(CLANGXX_DESTDIR $ENV{DESTDIR}/)
 else()
   set(CLANGXX_LINK_OR_COPY copy)
 endif()
 
 # Create the clang++ symlink in the build directory.
+set(clang_pp "${LLVM_BINARY_DIR}/bin/${CMAKE_CFG_INTDIR}/clang++${CMAKE_EXECUTABLE_SUFFIX}")
 add_custom_target(clang++ ALL
   ${CMAKE_COMMAND} -E ${CLANGXX_LINK_OR_COPY}
     "${LLVM_BINARY_DIR}/bin/${CMAKE_CFG_INTDIR}/clang${CMAKE_EXECUTABLE_SUFFIX}"
-    "${LLVM_BINARY_DIR}/bin/${CMAKE_CFG_INTDIR}/clang++${CMAKE_EXECUTABLE_SUFFIX}"
+    "${clang_pp}"
   DEPENDS clang)
+set_property(DIRECTORY APPEND
+  PROPERTY ADDITIONAL_MAKE_CLEAN_FILES ${clang_pp})
 
 install(TARGETS clang
   RUNTIME DESTINATION bin)
 
 # Create the clang++ symlink at installation time.
-install(CODE "execute_process(COMMAND \"${CMAKE_COMMAND}\" -E ${CLANGXX_LINK_OR_COPY} \"${CMAKE_INSTALL_PREFIX}/bin/clang${CMAKE_EXECUTABLE_SUFFIX}\" \"${CLANGXX_DESTDIR}${CMAKE_INSTALL_PREFIX}/bin/clang++${CMAKE_EXECUTABLE_SUFFIX}\")")
+install(SCRIPT clang_symlink.cmake -DCMAKE_INSTALL_PREFIX=\"${CMAKE_INSTALL_PREFIX}\")
diff --git a/tools/driver/Makefile b/tools/driver/Makefile
index 447f0e4eb06b..d96f9505ffe5 100644
--- a/tools/driver/Makefile
+++ b/tools/driver/Makefile
@@ -17,6 +17,16 @@ else
   endif
 endif
 
+# We don't currently expect production Clang builds to be interested in
+# plugins. This is important for startup performance.
+ifdef CLANG_IS_PRODUCTION
+TOOL_NO_EXPORTS := 1
+endif
+
+ifdef CLANG_ORDER_FILE
+TOOL_ORDER_FILE := $(CLANG_ORDER_FILE)
+endif
+
 # Include tool version information on OS X.
 TOOL_INFO_PLIST := Info.plist
 
@@ -29,7 +39,9 @@ LINK_COMPONENTS := $(TARGETS_TO_BUILD) asmparser bitreader bitwriter codegen \
                    ipo selectiondag
 USEDLIBS = clangFrontendTool.a clangFrontend.a clangDriver.a \
            clangSerialization.a clangCodeGen.a clangParse.a clangSema.a \
-           clangChecker.a clangAnalysis.a clangIndex.a clangRewrite.a \
+           clangStaticAnalyzerFrontend.a clangStaticAnalyzerCheckers.a \
+           clangStaticAnalyzerCore.a \
+           clangAnalysis.a clangIndex.a clangRewrite.a \
            clangAST.a clangLex.a clangBasic.a
 
 include $(CLANG_LEVEL)/Makefile
diff --git a/tools/driver/cc1_main.cpp b/tools/driver/cc1_main.cpp
index de5e8bf043bf..7fb394fa5b01 100644
--- a/tools/driver/cc1_main.cpp
+++ b/tools/driver/cc1_main.cpp
@@ -24,7 +24,6 @@
 #include "clang/Frontend/TextDiagnosticBuffer.h"
 #include "clang/Frontend/TextDiagnosticPrinter.h"
 #include "clang/FrontendTool/Utils.h"
-#include "llvm/LLVMContext.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/ManagedStatic.h"
@@ -116,13 +115,12 @@ static int cc1_test(Diagnostic &Diags,
 int cc1_main(const char **ArgBegin, const char **ArgEnd,
              const char *Argv0, void *MainAddr) {
   llvm::OwningPtr<CompilerInstance> Clang(new CompilerInstance());
-
-  Clang->setLLVMContext(new llvm::LLVMContext());
+  llvm::IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
 
   // Run clang -cc1 test.
   if (ArgBegin != ArgEnd && llvm::StringRef(ArgBegin[0]) == "-cc1test") {
-    Diagnostic Diags(new TextDiagnosticPrinter(llvm::errs(), 
-                                               DiagnosticOptions()));
+    Diagnostic Diags(DiagID, new TextDiagnosticPrinter(llvm::errs(), 
+                                                       DiagnosticOptions()));
     return cc1_test(Diags, ArgBegin + 1, ArgEnd);
   }
 
@@ -134,7 +132,7 @@ int cc1_main(const char **ArgBegin, const char **ArgEnd,
   // Buffer diagnostics from argument parsing so that we can output them using a
   // well formed diagnostic object.
   TextDiagnosticBuffer *DiagsBuffer = new TextDiagnosticBuffer;
-  Diagnostic Diags(DiagsBuffer);
+  Diagnostic Diags(DiagID, DiagsBuffer);
   CompilerInvocation::CreateFromArgs(Clang->getInvocation(), ArgBegin, ArgEnd,
                                      Diags);
 
diff --git a/tools/driver/cc1as_main.cpp b/tools/driver/cc1as_main.cpp
index 5bce70cb2a1b..1d544f3d3c9d 100644
--- a/tools/driver/cc1as_main.cpp
+++ b/tools/driver/cc1as_main.cpp
@@ -39,12 +39,16 @@
 #include "llvm/Support/SourceMgr.h"
 #include "llvm/Support/Timer.h"
 #include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Host.h"
-#include "llvm/System/Path.h"
-#include "llvm/System/Signals.h"
+#include "llvm/Support/Host.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/system_error.h"
 #include "llvm/Target/TargetAsmBackend.h"
+#include "llvm/Target/TargetAsmInfo.h"
 #include "llvm/Target/TargetAsmParser.h"
 #include "llvm/Target/TargetData.h"
+#include "llvm/Target/TargetLowering.h"
+#include "llvm/Target/TargetLoweringObjectFile.h"
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Target/TargetRegistry.h"
 #include "llvm/Target/TargetSelect.h"
@@ -97,6 +101,7 @@ struct AssemblerInvocation {
   /// @{
 
   unsigned RelaxAll : 1;
+  unsigned NoExecStack : 1;
 
   /// @}
 
@@ -111,6 +116,7 @@ public:
     ShowInst = 0;
     ShowEncoding = 0;
     RelaxAll = 0;
+    NoExecStack = 0;
   }
 
   static void CreateFromArgs(AssemblerInvocation &Res, const char **ArgBegin,
@@ -189,6 +195,7 @@ void AssemblerInvocation::CreateFromArgs(AssemblerInvocation &Opts,
 
   // Assemble Options
   Opts.RelaxAll = Args->hasArg(OPT_relax_all);
+  Opts.NoExecStack =  Args->hasArg(OPT_no_exec_stack);
 }
 
 static formatted_raw_ostream *GetOutputStream(AssemblerInvocation &Opts,
@@ -224,11 +231,13 @@ static bool ExecuteAssembler(AssemblerInvocation &Opts, Diagnostic &Diags) {
     return false;
   }
 
-  MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(Opts.InputFile, &Error);
-  if (Buffer == 0) {
+  OwningPtr<MemoryBuffer> BufferPtr;
+  if (error_code ec = MemoryBuffer::getFileOrSTDIN(Opts.InputFile, BufferPtr)) {
+    Error = ec.message();
     Diags.Report(diag::err_fe_error_reading) << Opts.InputFile;
     return false;
   }
+  MemoryBuffer *Buffer = BufferPtr.take();
 
   SourceMgr SrcMgr;
 
@@ -242,7 +251,6 @@ static bool ExecuteAssembler(AssemblerInvocation &Opts, Diagnostic &Diags) {
   OwningPtr<MCAsmInfo> MAI(TheTarget->createAsmInfo(Opts.Triple));
   assert(MAI && "Unable to create target asm info!");
 
-  MCContext Ctx(*MAI);
   bool IsBinary = Opts.OutputType == AssemblerInvocation::FT_Obj;
   formatted_raw_ostream *Out = GetOutputStream(Opts, Diags, IsBinary);
   if (!Out)
@@ -255,16 +263,28 @@ static bool ExecuteAssembler(AssemblerInvocation &Opts, Diagnostic &Diags) {
     return false;
   }
 
+  const TargetAsmInfo *tai = new TargetAsmInfo(*TM);
+  MCContext Ctx(*MAI, tai);
+
   OwningPtr<MCStreamer> Str;
 
+  const TargetLoweringObjectFile &TLOF =
+    TM->getTargetLowering()->getObjFileLowering();
+  const_cast<TargetLoweringObjectFile&>(TLOF).Initialize(Ctx, *TM);
+
+  // FIXME: There is a bit of code duplication with addPassesToEmitFile.
   if (Opts.OutputType == AssemblerInvocation::FT_Asm) {
     MCInstPrinter *IP =
       TheTarget->createMCInstPrinter(Opts.OutputAsmVariant, *MAI);
     MCCodeEmitter *CE = 0;
-    if (Opts.ShowEncoding)
+    TargetAsmBackend *TAB = 0;
+    if (Opts.ShowEncoding) {
       CE = TheTarget->createCodeEmitter(*TM, Ctx);
-    Str.reset(createAsmStreamer(Ctx, *Out,TM->getTargetData()->isLittleEndian(),
-                                /*asmverbose*/true, IP, CE, Opts.ShowInst));
+      TAB = TheTarget->createAsmBackend(Opts.Triple);
+    }
+    Str.reset(TheTarget->createAsmStreamer(Ctx, *Out, /*asmverbose*/true,
+                                           /*useLoc*/ true, IP, CE, TAB,
+                                           Opts.ShowInst));
   } else if (Opts.OutputType == AssemblerInvocation::FT_Null) {
     Str.reset(createNullStreamer(Ctx));
   } else {
@@ -273,7 +293,9 @@ static bool ExecuteAssembler(AssemblerInvocation &Opts, Diagnostic &Diags) {
     MCCodeEmitter *CE = TheTarget->createCodeEmitter(*TM, Ctx);
     TargetAsmBackend *TAB = TheTarget->createAsmBackend(Opts.Triple);
     Str.reset(TheTarget->createObjectStreamer(Opts.Triple, Ctx, *TAB, *Out,
-                                              CE, Opts.RelaxAll));
+                                              CE, Opts.RelaxAll,
+                                              Opts.NoExecStack));
+    Str.get()->InitSections();
   }
 
   OwningPtr<MCAsmParser> Parser(createMCAsmParser(*TheTarget, SrcMgr, Ctx,
@@ -325,7 +347,8 @@ int cc1as_main(const char **ArgBegin, const char **ArgEnd,
   TextDiagnosticPrinter *DiagClient
     = new TextDiagnosticPrinter(errs(), DiagnosticOptions());
   DiagClient->setPrefix("clang -cc1as");
-  Diagnostic Diags(DiagClient);
+  llvm::IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
+  Diagnostic Diags(DiagID, DiagClient);
 
   // Set an error handler, so that any LLVM backend diagnostics go through our
   // error handler.
@@ -366,7 +389,7 @@ int cc1as_main(const char **ArgBegin, const char **ArgEnd,
 
   // Execute the invocation, unless there were parsing errors.
   bool Success = false;
-  if (!Diags.getNumErrors())
+  if (!Diags.hasErrorOccurred())
     Success = ExecuteAssembler(Asm, Diags);
 
   // If any timers were active but haven't been destroyed yet, print their
diff --git a/tools/driver/clang_symlink.cmake b/tools/driver/clang_symlink.cmake
new file mode 100644
index 000000000000..40a74824cf2b
--- /dev/null
+++ b/tools/driver/clang_symlink.cmake
@@ -0,0 +1,20 @@
+# We need to execute this script at installation time because the
+# DESTDIR environment variable may be unset at configuration time.
+# See PR8397.
+
+if(UNIX)
+  set(CLANGXX_LINK_OR_COPY create_symlink)
+  set(CLANGXX_DESTDIR $ENV{DESTDIR})
+else()
+  set(CLANGXX_LINK_OR_COPY copy)
+endif()
+
+set(bindir "${CLANGXX_DESTDIR}${CMAKE_INSTALL_PREFIX}/bin/")
+set(clang "clang${CMAKE_EXECUTABLE_SUFFIX}")
+set(clangxx "clang++${CMAKE_EXECUTABLE_SUFFIX}")
+
+message("Creating clang++ executable based on ${clang}")
+
+execute_process(
+  COMMAND "${CMAKE_COMMAND}" -E ${CLANGXX_LINK_OR_COPY} "${clang}" "${clangxx}"
+  WORKING_DIRECTORY "${bindir}")
diff --git a/tools/driver/driver.cpp b/tools/driver/driver.cpp
index c058ece0dc9b..0b5d2c97a4e7 100644
--- a/tools/driver/driver.cpp
+++ b/tools/driver/driver.cpp
@@ -23,16 +23,19 @@
 #include "llvm/ADT/OwningPtr.h"
 #include "llvm/Config/config.h"
 #include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/FileSystem.h"
 #include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/Regex.h"
 #include "llvm/Support/Timer.h"
 #include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Host.h"
-#include "llvm/System/Path.h"
-#include "llvm/System/Program.h"
-#include "llvm/System/Signals.h"
+#include "llvm/Support/Host.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/Program.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/system_error.h"
+#include <cctype>
 using namespace clang;
 using namespace clang::driver;
 
@@ -181,8 +184,8 @@ static void ExpandArgsFromBuf(const char *Arg,
                               llvm::SmallVectorImpl<const char*> &ArgVector,
                               std::set<std::string> &SavedStrings) {
   const char *FName = Arg + 1;
-  llvm::MemoryBuffer *MemBuf = llvm::MemoryBuffer::getFile(FName);
-  if (!MemBuf) {
+  llvm::OwningPtr<llvm::MemoryBuffer> MemBuf;
+  if (llvm::MemoryBuffer::getFile(FName, MemBuf)) {
     ArgVector.push_back(SaveStringInSet(SavedStrings, Arg));
     return;
   }
@@ -233,7 +236,6 @@ static void ExpandArgsFromBuf(const char *Arg,
     }
     CurArg.push_back(*P);
   }
-  delete MemBuf;
 }
 
 static void ExpandArgv(int argc, const char **argv,
@@ -287,8 +289,9 @@ int main(int argc_, const char **argv_) {
 
   TextDiagnosticPrinter *DiagClient
     = new TextDiagnosticPrinter(llvm::errs(), DiagnosticOptions());
-  DiagClient->setPrefix(Path.getBasename());
-  Diagnostic Diags(DiagClient);
+  DiagClient->setPrefix(llvm::sys::path::stem(Path.str()));
+  llvm::IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
+  Diagnostic Diags(DiagID, DiagClient);
 
 #ifdef CLANG_IS_PRODUCTION
   const bool IsProduction = true;
@@ -308,19 +311,22 @@ int main(int argc_, const char **argv_) {
   // Attempt to find the original path used to invoke the driver, to determine
   // the installed path. We do this manually, because we want to support that
   // path being a symlink.
-  llvm::sys::Path InstalledPath(argv[0]);
-
-  // Do a PATH lookup, if there are no directory components.
-  if (InstalledPath.getLast() == InstalledPath.str()) {
-    llvm::sys::Path Tmp =
-      llvm::sys::Program::FindProgramByName(InstalledPath.getLast());
-    if (!Tmp.empty())
-      InstalledPath = Tmp;
+  {
+    llvm::SmallString<128> InstalledPath(argv[0]);
+
+    // Do a PATH lookup, if there are no directory components.
+    if (llvm::sys::path::filename(InstalledPath) == InstalledPath) {
+      llvm::sys::Path Tmp = llvm::sys::Program::FindProgramByName(
+        llvm::sys::path::filename(InstalledPath.str()));
+      if (!Tmp.empty())
+        InstalledPath = Tmp.str();
+    }
+    llvm::sys::fs::make_absolute(InstalledPath);
+    InstalledPath = llvm::sys::path::parent_path(InstalledPath);
+    bool exists;
+    if (!llvm::sys::fs::exists(InstalledPath.str(), exists) && exists)
+      TheDriver.setInstalledDir(InstalledPath);
   }
-  InstalledPath.makeAbsolute();
-  InstalledPath.eraseComponent();
-  if (InstalledPath.exists())
-    TheDriver.setInstalledDir(InstalledPath.str());
 
   // Check for ".*++" or ".*++-[^-]*" to determine if we are a C++
   // compiler. This matches things like "c++", "clang++", and "clang++-1.1".
@@ -330,11 +336,10 @@ int main(int argc_, const char **argv_) {
   //
   // We use *argv instead of argv[0] to work around a bogus g++ warning.
   const char *progname = argv_[0];
-  std::string ProgName(llvm::sys::Path(progname).getBasename());
+  std::string ProgName(llvm::sys::path::stem(progname));
   if (llvm::StringRef(ProgName).endswith("++") ||
       llvm::StringRef(ProgName).rsplit('-').first.endswith("++")) {
     TheDriver.CCCIsCXX = true;
-    TheDriver.CCCGenericGCCName = "g++";
   }
 
   // Handle CC_PRINT_OPTIONS and CC_PRINT_OPTIONS_FILE.
@@ -342,6 +347,11 @@ int main(int argc_, const char **argv_) {
   if (TheDriver.CCPrintOptions)
     TheDriver.CCPrintOptionsFilename = ::getenv("CC_PRINT_OPTIONS_FILE");
 
+  // Handle CC_PRINT_HEADERS and CC_PRINT_HEADERS_FILE.
+  TheDriver.CCPrintHeaders = !!::getenv("CC_PRINT_HEADERS");
+  if (TheDriver.CCPrintHeaders)
+    TheDriver.CCPrintHeadersFilename = ::getenv("CC_PRINT_HEADERS_FILE");
+
   // Handle QA_OVERRIDE_GCC3_OPTIONS and CCC_ADD_ARGS, used for editing a
   // command line behind the scenes.
   if (const char *OverrideStr = ::getenv("QA_OVERRIDE_GCC3_OPTIONS")) {