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finally, Working varargs

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22275 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Lenharth 2005-06-23 16:48:51 +00:00
parent cdf233d55d
commit a9e39e28b7
1 changed files with 24 additions and 13 deletions
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37
lib/Target/Alpha/AlphaISelPattern.cpp
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@ -403,24 +403,23 @@ AlphaTargetLowering::LowerCallTo(SDOperand Chain,
std::pair<SDOperand, SDOperand>
AlphaTargetLowering::LowerVAStart(SDOperand Chain, SelectionDAG &DAG, SDOperand Dest) {
// vastart just stores the address of the VarArgsBase and VarArgsOffset
SDOperand FR = DAG.getFrameIndex(VarArgsBase, MVT::i32);
SDOperand FR = DAG.getFrameIndex(VarArgsBase, MVT::i64);
SDOperand S1 = DAG.getNode(ISD::STORE, MVT::Other, Chain, FR, Dest, DAG.getSrcValue(NULL));
SDOperand SA2 = DAG.getNode(ISD::ADD, MVT::i64, Dest, DAG.getConstant(8, MVT::i64));
SDOperand S2 = DAG.getNode(ISD::STORE, MVT::Other, S1,
SDOperand S2 = DAG.getNode(ISD::TRUNCSTORE, MVT::Other, S1,
DAG.getConstant(VarArgsOffset, MVT::i64), SA2,
DAG.getSrcValue(NULL));
DAG.getSrcValue(NULL), MVT::i32);
return std::make_pair(S2, S2);
}
std::pair<SDOperand,SDOperand> AlphaTargetLowering::
LowerVAArgNext(SDOperand Chain, SDOperand VAList,
const Type *ArgTy, SelectionDAG &DAG) {
//FIXME: For now, ignore FP
SDOperand Base = DAG.getLoad(MVT::i64, Chain, VAList, DAG.getSrcValue(NULL));
SDOperand Tmp = DAG.getNode(ISD::ADD, MVT::i64, VAList,
DAG.getConstant(8, MVT::i64));
SDOperand Offset = DAG.getLoad(MVT::i64, Chain, Tmp, DAG.getSrcValue(NULL));
SDOperand Offset = DAG.getNode(ISD::SEXTLOAD, MVT::i64, Chain, Tmp,
DAG.getSrcValue(NULL), MVT::i32);
SDOperand DataPtr = DAG.getNode(ISD::ADD, MVT::i64, Base, Offset);
if (ArgTy->isFloatingPoint())
{
@ -432,12 +431,23 @@ LowerVAArgNext(SDOperand Chain, SDOperand VAList,
DataPtr = DAG.getNode(ISD::SELECT, MVT::i64, CC, FPDataPtr, DataPtr);
}
SDOperand Result = DAG.getLoad(getValueType(ArgTy), Chain, DataPtr,
DAG.getSrcValue(NULL));
SDOperand Result;
if (ArgTy == Type::IntTy)
Result = DAG.getNode(ISD::SEXTLOAD, MVT::i64, Chain, DataPtr,
DAG.getSrcValue(NULL), MVT::i32);
else if (ArgTy == Type::UIntTy)
Result = DAG.getNode(ISD::ZEXTLOAD, MVT::i64, Chain, DataPtr,
DAG.getSrcValue(NULL), MVT::i32);
else
Result = DAG.getLoad(getValueType(ArgTy), Chain, DataPtr,
DAG.getSrcValue(NULL));
SDOperand NewOffset = DAG.getNode(ISD::ADD, MVT::i64, Offset,
DAG.getConstant(8, MVT::i64));
SDOperand Update = DAG.getNode(ISD::STORE, MVT::Other, Result, NewOffset,
Tmp, DAG.getSrcValue(NULL));
SDOperand Update = DAG.getNode(ISD::TRUNCSTORE, MVT::Other, Result, NewOffset,
Tmp, DAG.getSrcValue(NULL), MVT::i32);
Result = DAG.getNode(ISD::TRUNCATE, getValueType(ArgTy), Result);
return std::make_pair(Result, Update);
}
@ -450,9 +460,10 @@ LowerVACopy(SDOperand Chain, SDOperand Src, SDOperand Dest,
Val, Dest, DAG.getSrcValue(NULL));
SDOperand NP = DAG.getNode(ISD::ADD, MVT::i64, Src,
DAG.getConstant(8, MVT::i64));
Val = DAG.getLoad(MVT::i32, Chain, NP, DAG.getSrcValue(NULL));
Result = DAG.getNode(ISD::STORE, MVT::Other, Val.getValue(1),
Val, Dest, DAG.getSrcValue(NULL));
Val = DAG.getNode(ISD::SEXTLOAD, MVT::i64, Chain, NP, DAG.getSrcValue(NULL),
MVT::i32);
Result = DAG.getNode(ISD::TRUNCSTORE, MVT::Other, Val.getValue(1),
Val, Dest, DAG.getSrcValue(NULL), MVT::i32);
return std::make_pair(Result, Result);
}