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Pull CodeGenFunction::EmitVAArg into target specific ABIInfo classes.

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llvm-svn: 64235
This commit is contained in:
Daniel Dunbar
2009-02-10 20:44:09 +00:00
parent 4e7ae06b00
commit 2d0746fb97
2 changed files with 55 additions and 38 deletions
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35
clang/lib/CodeGen/CodeGenFunction.cpp
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@@ -429,41 +429,6 @@ void CodeGenFunction::EmitIndirectSwitches() {
}
}
llvm::Value *CodeGenFunction::EmitVAArg(llvm::Value *VAListAddr, QualType Ty)
{
// FIXME: This entire method is hardcoded for 32-bit X86.
const char *TargetPrefix = getContext().Target.getTargetPrefix();
if (strcmp(TargetPrefix, "x86") != 0 ||
getContext().Target.getPointerWidth(0) != 32)
return 0;
const llvm::Type *BP = llvm::PointerType::getUnqual(llvm::Type::Int8Ty);
const llvm::Type *BPP = llvm::PointerType::getUnqual(BP);
llvm::Value *VAListAddrAsBPP = Builder.CreateBitCast(VAListAddr, BPP,
"ap");
llvm::Value *Addr = Builder.CreateLoad(VAListAddrAsBPP, "ap.cur");
llvm::Value *AddrTyped =
Builder.CreateBitCast(Addr,
llvm::PointerType::getUnqual(ConvertType(Ty)));
uint64_t SizeInBytes = getContext().getTypeSize(Ty) / 8;
const unsigned ArgumentSizeInBytes = 4;
if (SizeInBytes < ArgumentSizeInBytes)
SizeInBytes = ArgumentSizeInBytes;
llvm::Value *NextAddr =
Builder.CreateGEP(Addr,
llvm::ConstantInt::get(llvm::Type::Int32Ty, SizeInBytes),
"ap.next");
Builder.CreateStore(NextAddr, VAListAddrAsBPP);
return AddrTyped;
}
llvm::Value *CodeGenFunction::GetVLASize(const VariableArrayType *VAT)
{
llvm::Value *&SizeEntry = VLASizeMap[VAT];