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implement EmitVAArg. pretty much the same way other targets do. 

llvm-svn: 96446
This commit is contained in:
Sanjiv Gupta 2010-02-17 02:25:52 +00:00
parent ca55a04273
commit ba1e267a4c
1 changed files with 21 additions and 1 deletions
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22
clang/lib/CodeGen/TargetInfo.cpp
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@ -1497,9 +1497,29 @@ ABIArgInfo PIC16ABIInfo::classifyArgumentType(QualType Ty,
llvm::Value *PIC16ABIInfo::EmitVAArg(llvm::Value *VAListAddr, QualType Ty,
CodeGenFunction &CGF) const {
return 0;
const llvm::Type *BP = llvm::PointerType::getUnqual(llvm::Type::getInt8Ty(CGF.getLLVMContext()));
const llvm::Type *BPP = llvm::PointerType::getUnqual(BP);
CGBuilderTy &Builder = CGF.Builder;
llvm::Value *VAListAddrAsBPP = Builder.CreateBitCast(VAListAddr, BPP,
"ap");
llvm::Value *Addr = Builder.CreateLoad(VAListAddrAsBPP, "ap.cur");
llvm::Type *PTy =
llvm::PointerType::getUnqual(CGF.ConvertType(Ty));
llvm::Value *AddrTyped = Builder.CreateBitCast(Addr, PTy);
uint64_t Offset = CGF.getContext().getTypeSize(Ty) / 8;
llvm::Value *NextAddr =
Builder.CreateGEP(Addr, llvm::ConstantInt::get(
llvm::Type::getInt32Ty(CGF.getLLVMContext()), Offset),
"ap.next");
Builder.CreateStore(NextAddr, VAListAddrAsBPP);
return AddrTyped;
}
// ARM ABI Implementation
namespace {