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finally, Working varargs
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22275 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -403,24 +403,23 @@ AlphaTargetLowering::LowerCallTo(SDOperand Chain,
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std::pair<SDOperand, SDOperand>
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std::pair<SDOperand, SDOperand>
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AlphaTargetLowering::LowerVAStart(SDOperand Chain, SelectionDAG &DAG, SDOperand Dest) {
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AlphaTargetLowering::LowerVAStart(SDOperand Chain, SelectionDAG &DAG, SDOperand Dest) {
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// vastart just stores the address of the VarArgsBase and VarArgsOffset
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// vastart just stores the address of the VarArgsBase and VarArgsOffset
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SDOperand FR = DAG.getFrameIndex(VarArgsBase, MVT::i32);
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SDOperand FR = DAG.getFrameIndex(VarArgsBase, MVT::i64);
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SDOperand S1 = DAG.getNode(ISD::STORE, MVT::Other, Chain, FR, Dest, DAG.getSrcValue(NULL));
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SDOperand S1 = DAG.getNode(ISD::STORE, MVT::Other, Chain, FR, Dest, DAG.getSrcValue(NULL));
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SDOperand SA2 = DAG.getNode(ISD::ADD, MVT::i64, Dest, DAG.getConstant(8, MVT::i64));
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SDOperand SA2 = DAG.getNode(ISD::ADD, MVT::i64, Dest, DAG.getConstant(8, MVT::i64));
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SDOperand S2 = DAG.getNode(ISD::STORE, MVT::Other, S1,
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SDOperand S2 = DAG.getNode(ISD::TRUNCSTORE, MVT::Other, S1,
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DAG.getConstant(VarArgsOffset, MVT::i64), SA2,
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DAG.getConstant(VarArgsOffset, MVT::i64), SA2,
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DAG.getSrcValue(NULL));
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DAG.getSrcValue(NULL), MVT::i32);
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return std::make_pair(S2, S2);
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return std::make_pair(S2, S2);
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}
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}
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std::pair<SDOperand,SDOperand> AlphaTargetLowering::
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std::pair<SDOperand,SDOperand> AlphaTargetLowering::
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LowerVAArgNext(SDOperand Chain, SDOperand VAList,
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LowerVAArgNext(SDOperand Chain, SDOperand VAList,
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const Type *ArgTy, SelectionDAG &DAG) {
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const Type *ArgTy, SelectionDAG &DAG) {
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//FIXME: For now, ignore FP
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SDOperand Base = DAG.getLoad(MVT::i64, Chain, VAList, DAG.getSrcValue(NULL));
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SDOperand Base = DAG.getLoad(MVT::i64, Chain, VAList, DAG.getSrcValue(NULL));
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SDOperand Tmp = DAG.getNode(ISD::ADD, MVT::i64, VAList,
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SDOperand Tmp = DAG.getNode(ISD::ADD, MVT::i64, VAList,
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DAG.getConstant(8, MVT::i64));
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DAG.getConstant(8, MVT::i64));
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SDOperand Offset = DAG.getLoad(MVT::i64, Chain, Tmp, DAG.getSrcValue(NULL));
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SDOperand Offset = DAG.getNode(ISD::SEXTLOAD, MVT::i64, Chain, Tmp,
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DAG.getSrcValue(NULL), MVT::i32);
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SDOperand DataPtr = DAG.getNode(ISD::ADD, MVT::i64, Base, Offset);
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SDOperand DataPtr = DAG.getNode(ISD::ADD, MVT::i64, Base, Offset);
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if (ArgTy->isFloatingPoint())
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if (ArgTy->isFloatingPoint())
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{
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{
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@ -432,12 +431,23 @@ LowerVAArgNext(SDOperand Chain, SDOperand VAList,
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DataPtr = DAG.getNode(ISD::SELECT, MVT::i64, CC, FPDataPtr, DataPtr);
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DataPtr = DAG.getNode(ISD::SELECT, MVT::i64, CC, FPDataPtr, DataPtr);
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}
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}
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SDOperand Result = DAG.getLoad(getValueType(ArgTy), Chain, DataPtr,
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SDOperand Result;
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DAG.getSrcValue(NULL));
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if (ArgTy == Type::IntTy)
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Result = DAG.getNode(ISD::SEXTLOAD, MVT::i64, Chain, DataPtr,
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DAG.getSrcValue(NULL), MVT::i32);
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else if (ArgTy == Type::UIntTy)
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Result = DAG.getNode(ISD::ZEXTLOAD, MVT::i64, Chain, DataPtr,
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DAG.getSrcValue(NULL), MVT::i32);
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else
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Result = DAG.getLoad(getValueType(ArgTy), Chain, DataPtr,
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DAG.getSrcValue(NULL));
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SDOperand NewOffset = DAG.getNode(ISD::ADD, MVT::i64, Offset,
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SDOperand NewOffset = DAG.getNode(ISD::ADD, MVT::i64, Offset,
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DAG.getConstant(8, MVT::i64));
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DAG.getConstant(8, MVT::i64));
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SDOperand Update = DAG.getNode(ISD::STORE, MVT::Other, Result, NewOffset,
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SDOperand Update = DAG.getNode(ISD::TRUNCSTORE, MVT::Other, Result, NewOffset,
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Tmp, DAG.getSrcValue(NULL));
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Tmp, DAG.getSrcValue(NULL), MVT::i32);
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Result = DAG.getNode(ISD::TRUNCATE, getValueType(ArgTy), Result);
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return std::make_pair(Result, Update);
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return std::make_pair(Result, Update);
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}
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}
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@ -450,9 +460,10 @@ LowerVACopy(SDOperand Chain, SDOperand Src, SDOperand Dest,
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Val, Dest, DAG.getSrcValue(NULL));
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Val, Dest, DAG.getSrcValue(NULL));
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SDOperand NP = DAG.getNode(ISD::ADD, MVT::i64, Src,
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SDOperand NP = DAG.getNode(ISD::ADD, MVT::i64, Src,
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DAG.getConstant(8, MVT::i64));
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DAG.getConstant(8, MVT::i64));
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Val = DAG.getLoad(MVT::i32, Chain, NP, DAG.getSrcValue(NULL));
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Val = DAG.getNode(ISD::SEXTLOAD, MVT::i64, Chain, NP, DAG.getSrcValue(NULL),
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Result = DAG.getNode(ISD::STORE, MVT::Other, Val.getValue(1),
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MVT::i32);
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Val, Dest, DAG.getSrcValue(NULL));
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Result = DAG.getNode(ISD::TRUNCSTORE, MVT::Other, Val.getValue(1),
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Val, Dest, DAG.getSrcValue(NULL), MVT::i32);
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return std::make_pair(Result, Result);
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return std::make_pair(Result, Result);
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}
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}
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