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Bug 8765: Honor assembler labels for builtins. Ensure that the label is

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mangled to avoid doing it twice for platforms that use prefixes like
Darwin.

llvm-svn: 131311
This commit is contained in:
Joerg Sonnenberger
2011-05-13 21:12:10 +00:00
parent b9c79ad333
commit caf8ffd8e3
2 changed files with 26 additions and 4 deletions
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18
clang/lib/CodeGen/CodeGenModule.cpp
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@@ -1574,14 +1574,24 @@ llvm::Value *CodeGenModule::getBuiltinLibFunction(const FunctionDecl *FD,
"isn't a lib fn");
// Get the name, skip over the __builtin_ prefix (if necessary).
const char *Name = Context.BuiltinInfo.GetName(BuiltinID);
if (Context.BuiltinInfo.isLibFunction(BuiltinID))
Name += 10;
llvm::StringRef Name;
GlobalDecl D(FD);
// If the builtin has been declared explicitly with an assembler label,
// use the mangled name. This differs from the plain label on platforms
// that prefix labels.
if (const AsmLabelAttr *ALA = FD->getAttr<AsmLabelAttr>())
Name = getMangledName(D);
else if (Context.BuiltinInfo.isLibFunction(BuiltinID))
Name = Context.BuiltinInfo.GetName(BuiltinID) + 10;
else
Name = Context.BuiltinInfo.GetName(BuiltinID);
const llvm::FunctionType *Ty =
cast<llvm::FunctionType>(getTypes().ConvertType(FD->getType()));
return GetOrCreateLLVMFunction(Name, Ty, GlobalDecl(FD), /*ForVTable=*/false);
return GetOrCreateLLVMFunction(Name, Ty, D, /*ForVTable=*/false);
}
llvm::Function *CodeGenModule::getIntrinsic(unsigned IID,const llvm::Type **Tys,