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

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

1 files changed, 39 insertions, 13 deletions

diff --git a/lib/Basic/TargetInfo.cpp b/lib/Basic/TargetInfo.cpp
index 6d42883cd13c..a9eeb8b4cc4e 100644
--- a/lib/Basic/TargetInfo.cpp
+++ b/lib/Basic/TargetInfo.cpp
@@ -15,6 +15,7 @@
 #include "clang/Basic/LangOptions.h"
 #include "llvm/ADT/APFloat.h"
 #include "llvm/ADT/STLExtras.h"
+#include <cctype>
 #include <cstdlib>
 using namespace clang;
 
@@ -25,6 +26,7 @@ TargetInfo::TargetInfo(const std::string &T) : Triple(T) {
   TLSSupported = true;
   NoAsmVariants = false;
   PointerWidth = PointerAlign = 32;
+  BoolWidth = BoolAlign = 8;
   IntWidth = IntAlign = 32;
   LongWidth = LongAlign = 32;
   LongLongWidth = LongLongAlign = 64;
@@ -54,6 +56,7 @@ TargetInfo::TargetInfo(const std::string &T) : Triple(T) {
   DescriptionString = "E-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-"
                       "i64:64:64-f32:32:32-f64:64:64-n32";
   UserLabelPrefix = "_";
+  MCountName = "mcount";
   HasAlignMac68kSupport = false;
 
   // Default to no types using fpret.
@@ -98,7 +101,7 @@ const char *TargetInfo::getTypeConstantSuffix(IntType T) {
   }
 }
 
-/// getTypeWidth - Return the width (in bits) of the specified integer type 
+/// getTypeWidth - Return the width (in bits) of the specified integer type
 /// enum. For example, SignedInt -> getIntWidth().
 unsigned TargetInfo::getTypeWidth(IntType T) const {
   switch (T) {
@@ -114,7 +117,7 @@ unsigned TargetInfo::getTypeWidth(IntType T) const {
   };
 }
 
-/// getTypeAlign - Return the alignment (in bits) of the specified integer type 
+/// getTypeAlign - Return the alignment (in bits) of the specified integer type
 /// enum. For example, SignedInt -> getIntAlign().
 unsigned TargetInfo::getTypeAlign(IntType T) const {
   switch (T) {
@@ -132,18 +135,18 @@ unsigned TargetInfo::getTypeAlign(IntType T) const {
 
 /// isTypeSigned - Return whether an integer types is signed. Returns true if
 /// the type is signed; false otherwise.
-bool TargetInfo::isTypeSigned(IntType T) const {
+bool TargetInfo::isTypeSigned(IntType T) {
   switch (T) {
   default: assert(0 && "not an integer!");
   case SignedShort:
   case SignedInt:
   case SignedLong:
-  case SignedLongLong:   
+  case SignedLongLong:
     return true;
   case UnsignedShort:
   case UnsignedInt:
   case UnsignedLong:
-  case UnsignedLongLong: 
+  case UnsignedLongLong:
     return false;
   };
 }
@@ -164,7 +167,7 @@ void TargetInfo::setForcedLangOptions(LangOptions &Opts) {
 static llvm::StringRef removeGCCRegisterPrefix(llvm::StringRef Name) {
   if (Name[0] == '%' || Name[0] == '#')
     Name = Name.substr(1);
-  
+
   return Name;
 }
 
@@ -174,7 +177,7 @@ static llvm::StringRef removeGCCRegisterPrefix(llvm::StringRef Name) {
 bool TargetInfo::isValidGCCRegisterName(llvm::StringRef Name) const {
   if (Name.empty())
     return false;
-  
+
   const char * const *Names;
   unsigned NumNames;
 
@@ -216,7 +219,7 @@ bool TargetInfo::isValidGCCRegisterName(llvm::StringRef Name) const {
   return false;
 }
 
-llvm::StringRef 
+llvm::StringRef
 TargetInfo::getNormalizedGCCRegisterName(llvm::StringRef Name) const {
   assert(isValidGCCRegisterName(Name) && "Invalid register passed in");
 
@@ -283,6 +286,10 @@ bool TargetInfo::validateOutputConstraint(ConstraintInfo &Info) const {
       Info.setAllowsRegister();
       break;
     case 'm': // memory operand.
+    case 'o': // offsetable memory operand.
+    case 'V': // non-offsetable memory operand.
+    case '<': // autodecrement memory operand.
+    case '>': // autoincrement memory operand.
       Info.setAllowsMemory();
       break;
     case 'g': // general register, memory operand or immediate integer.
@@ -291,13 +298,12 @@ bool TargetInfo::validateOutputConstraint(ConstraintInfo &Info) const {
       Info.setAllowsMemory();
       break;
     case ',': // multiple alternative constraint.  Pass it.
-      Name++;
       // Handle additional optional '=' or '+' modifiers.
-      if (*Name == '=' || *Name == '+')
+      if (Name[1] == '=' || Name[1] == '+')
         Name++;
       break;
     case '?': // Disparage slightly code.
-    case '!': // Disparage severly.
+    case '!': // Disparage severely.
       break;  // Pass them.
     }
 
@@ -347,6 +353,15 @@ bool TargetInfo::validateInputConstraint(ConstraintInfo *OutputConstraints,
         if (i >= NumOutputs)
           return false;
 
+        // A number must refer to an output only operand.
+        if (OutputConstraints[i].isReadWrite())
+          return false;
+
+        // If the constraint is already tied, it must be tied to the 
+        // same operand referenced to by the number.
+        if (Info.hasTiedOperand() && Info.getTiedOperand() != i)
+          return false;
+
         // The constraint should have the same info as the respective
         // output constraint.
         Info.setTiedOperand(i, OutputConstraints[i]);
@@ -362,6 +377,11 @@ bool TargetInfo::validateInputConstraint(ConstraintInfo *OutputConstraints,
       if (!resolveSymbolicName(Name, OutputConstraints, NumOutputs, Index))
         return false;
 
+      // If the constraint is already tied, it must be tied to the 
+      // same operand referenced to by the number.
+      if (Info.hasTiedOperand() && Info.getTiedOperand() != Index)
+        return false;
+
       Info.setTiedOperand(Index, OutputConstraints[Index]);
       break;
     }
@@ -384,8 +404,10 @@ bool TargetInfo::validateInputConstraint(ConstraintInfo *OutputConstraints,
       Info.setAllowsRegister();
       break;
     case 'm': // memory operand.
-    case 'o': // offsettable memory operand
-    case 'V': // non-offsettable memory operand
+    case 'o': // offsettable memory operand.
+    case 'V': // non-offsettable memory operand.
+    case '<': // autodecrement memory operand.
+    case '>': // autoincrement memory operand.
       Info.setAllowsMemory();
       break;
     case 'g': // general register, memory operand or immediate integer.
@@ -393,6 +415,10 @@ bool TargetInfo::validateInputConstraint(ConstraintInfo *OutputConstraints,
       Info.setAllowsRegister();
       Info.setAllowsMemory();
       break;
+    case 'E': // immediate floating point.
+    case 'F': // immediate floating point.
+    case 'p': // address operand.
+      break;
     case ',': // multiple alternative constraint.  Ignore comma.
       break;
     case '?': // Disparage slightly code.