- // Must mangle the global into a unique ID.
- getNameWithPrefix(OutName, "__unnamed_" + Twine(ID), PrefixTy);
+ // If we are supposed to add a microsoft-style suffix for stdcall/fastcall,
+ // add it.
+ if (Context.getAsmInfo().hasMicrosoftFastStdCallMangling()) {
+ if (const Function *F = dyn_cast<Function>(GV)) {
+ CallingConv::ID CC = F->getCallingConv();
+
+ // fastcall functions need to start with @.
+ // FIXME: This logic seems unlikely to be right.
+ if (CC == CallingConv::X86_FastCall) {
+ if (OutName[0] == '_')
+ OutName[0] = '@';
+ else
+ OutName.insert(OutName.begin(), '@');
+ }
+
+ // fastcall and stdcall functions usually need @42 at the end to specify
+ // the argument info.
+ FunctionType *FT = F->getFunctionType();
+ if ((CC == CallingConv::X86_FastCall || CC == CallingConv::X86_StdCall) &&
+ // "Pure" variadic functions do not receive @0 suffix.
+ (!FT->isVarArg() || FT->getNumParams() == 0 ||
+ (FT->getNumParams() == 1 && F->hasStructRetAttr())))
+ AddFastCallStdCallSuffix(OutName, F, TD);
+ }
+ }