move fastcall/stdcall mangling up into Mangler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98384 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/X86/X86COFFMachineModuleInfo.cpp

@@ -26,47 +26,3 @@ using namespace llvm;
 X86COFFMachineModuleInfo::~X86COFFMachineModuleInfo() {
 }
 
-/// DecorateCygMingName - Query FunctionInfoMap and use this information for
-/// various name decorations for Cygwin and MingW.
-MCSymbol *X86COFFMachineModuleInfo::DecorateCygMingName(MCSymbol *NameSym,
-                                                        MCContext &Ctx,
-                                                        const Function *F,
-                                                        const TargetData &TD) {
-  // We don't want to decorate non-stdcall or non-fastcall functions right now
-  CallingConv::ID CC = F->getCallingConv();
-  if (CC != CallingConv::X86_StdCall && CC != CallingConv::X86_FastCall)
-    return NameSym;
-  
-  unsigned ArgWords = 0;
-  
-  // Calculate arguments sizes
-  for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
-       AI != AE; ++AI) {
-    const Type *Ty = AI->getType();
-    
-    // 'Dereference' type in case of byval parameter attribute
-    if (AI->hasByValAttr())
-      Ty = cast<PointerType>(Ty)->getElementType();
-    
-    // Size should be aligned to DWORD boundary
-    ArgWords += ((TD.getTypeAllocSize(Ty) + 3)/4)*4;
-  }
-  
-  const FunctionType *FT = F->getFunctionType();
-  
-  SmallString<128> Name(NameSym->getName().begin(), NameSym->getName().end());
-
-  // "Pure" variadic functions do not receive @0 suffix.
-  if (!FT->isVarArg() || FT->getNumParams() == 0 ||
-      (FT->getNumParams() == 1 && F->hasStructRetAttr()))
-    raw_svector_ostream(Name) << '@' << ArgWords;
-  
-  if (CC == CallingConv::X86_FastCall) {
-    if (Name[0] == '_')
-      Name[0] = '@';
-    else
-      Name.insert(Name.begin(), '@');
-  }
-  
-  return Ctx.GetOrCreateSymbol(Name.str());
-}