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more complete Lowering for vacopy and vaarg

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22274 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Lenharth 2005-06-22 23:04:28 +00:00
parent 213e557cef
commit cdf233d55d
1 changed files with 29 additions and 1 deletions
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30
lib/Target/Alpha/AlphaISelPattern.cpp
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@ -159,6 +159,10 @@ namespace {
LowerVAArgNext(SDOperand Chain, SDOperand VAList,
const Type *ArgTy, SelectionDAG &DAG);
std::pair<SDOperand,SDOperand>
LowerVACopy(SDOperand Chain, SDOperand Src, SDOperand Dest,
SelectionDAG &DAG);
virtual std::pair<SDOperand, SDOperand>
LowerFrameReturnAddress(bool isFrameAddr, SDOperand Chain, unsigned Depth,
SelectionDAG &DAG);
@ -418,7 +422,17 @@ LowerVAArgNext(SDOperand Chain, SDOperand VAList,
DAG.getConstant(8, MVT::i64));
SDOperand Offset = DAG.getLoad(MVT::i64, Chain, Tmp, DAG.getSrcValue(NULL));
SDOperand DataPtr = DAG.getNode(ISD::ADD, MVT::i64, Base, Offset);
SDOperand Result = DAG.getLoad(MVT::i64, Chain, DataPtr,
if (ArgTy->isFloatingPoint())
{
//if fp && Offset < 6*8, then subtract 6*8 from DataPtr
SDOperand FPDataPtr = DAG.getNode(ISD::SUB, MVT::i64, DataPtr,
DAG.getConstant(8*6, MVT::i64));
SDOperand CC = DAG.getSetCC(ISD::SETLT, MVT::i64,
Offset, DAG.getConstant(8*6, MVT::i64));
DataPtr = DAG.getNode(ISD::SELECT, MVT::i64, CC, FPDataPtr, DataPtr);
}
SDOperand Result = DAG.getLoad(getValueType(ArgTy), Chain, DataPtr,
DAG.getSrcValue(NULL));
SDOperand NewOffset = DAG.getNode(ISD::ADD, MVT::i64, Offset,
DAG.getConstant(8, MVT::i64));
@ -427,6 +441,20 @@ LowerVAArgNext(SDOperand Chain, SDOperand VAList,
return std::make_pair(Result, Update);
}
std::pair<SDOperand,SDOperand> AlphaTargetLowering::
LowerVACopy(SDOperand Chain, SDOperand Src, SDOperand Dest,
SelectionDAG &DAG) {
//Default to returning the input list
SDOperand Val = DAG.getLoad(getPointerTy(), Chain, Src, DAG.getSrcValue(NULL));
SDOperand Result = DAG.getNode(ISD::STORE, MVT::Other, Val.getValue(1),
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));
return std::make_pair(Result, Result);
}
std::pair<SDOperand, SDOperand> AlphaTargetLowering::
LowerFrameReturnAddress(bool isFrameAddress, SDOperand Chain, unsigned Depth,