diff options
Diffstat (limited to 'llvm/lib/Target/Alpha/AlphaISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/Alpha/AlphaISelLowering.cpp | 144 |
1 files changed, 70 insertions, 74 deletions
diff --git a/llvm/lib/Target/Alpha/AlphaISelLowering.cpp b/llvm/lib/Target/Alpha/AlphaISelLowering.cpp index 6f8226113c9..44b37c75fd7 100644 --- a/llvm/lib/Target/Alpha/AlphaISelLowering.cpp +++ b/llvm/lib/Target/Alpha/AlphaISelLowering.cpp @@ -368,79 +368,6 @@ AlphaTargetLowering::LowerCallTo(SDOperand Chain, return std::make_pair(RetVal, Chain); } -SDOperand AlphaTargetLowering::LowerVAStart(SDOperand Chain, SDOperand VAListP, - Value *VAListV, SelectionDAG &DAG) { - // vastart stores the address of the VarArgsBase and VarArgsOffset - SDOperand FR = DAG.getFrameIndex(VarArgsBase, MVT::i64); - SDOperand S1 = DAG.getNode(ISD::STORE, MVT::Other, Chain, FR, VAListP, - DAG.getSrcValue(VAListV)); - SDOperand SA2 = DAG.getNode(ISD::ADD, MVT::i64, VAListP, - DAG.getConstant(8, MVT::i64)); - return DAG.getNode(ISD::TRUNCSTORE, MVT::Other, S1, - DAG.getConstant(VarArgsOffset, MVT::i64), SA2, - DAG.getSrcValue(VAListV, 8), DAG.getValueType(MVT::i32)); -} - -std::pair<SDOperand,SDOperand> AlphaTargetLowering:: -LowerVAArg(SDOperand Chain, SDOperand VAListP, Value *VAListV, - const Type *ArgTy, SelectionDAG &DAG) { - SDOperand Base = DAG.getLoad(MVT::i64, Chain, VAListP, - DAG.getSrcValue(VAListV)); - SDOperand Tmp = DAG.getNode(ISD::ADD, MVT::i64, VAListP, - DAG.getConstant(8, MVT::i64)); - SDOperand Offset = DAG.getExtLoad(ISD::SEXTLOAD, MVT::i64, Base.getValue(1), - Tmp, DAG.getSrcValue(VAListV, 8), MVT::i32); - SDOperand DataPtr = DAG.getNode(ISD::ADD, MVT::i64, Base, Offset); - 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(MVT::i64, Offset, - DAG.getConstant(8*6, MVT::i64), ISD::SETLT); - DataPtr = DAG.getNode(ISD::SELECT, MVT::i64, CC, FPDataPtr, DataPtr); - } - - SDOperand Result; - if (ArgTy == Type::IntTy) - Result = DAG.getExtLoad(ISD::SEXTLOAD, MVT::i64, Offset.getValue(1), - DataPtr, DAG.getSrcValue(NULL), MVT::i32); - else if (ArgTy == Type::UIntTy) - Result = DAG.getExtLoad(ISD::ZEXTLOAD, MVT::i64, Offset.getValue(1), - DataPtr, DAG.getSrcValue(NULL), MVT::i32); - else - Result = DAG.getLoad(getValueType(ArgTy), Offset.getValue(1), DataPtr, - DAG.getSrcValue(NULL)); - - SDOperand NewOffset = DAG.getNode(ISD::ADD, MVT::i64, Offset, - DAG.getConstant(8, MVT::i64)); - SDOperand Update = DAG.getNode(ISD::TRUNCSTORE, MVT::Other, - Result.getValue(1), NewOffset, - Tmp, DAG.getSrcValue(VAListV, 8), - DAG.getValueType(MVT::i32)); - Result = DAG.getNode(ISD::TRUNCATE, getValueType(ArgTy), Result); - - return std::make_pair(Result, Update); -} - -SDOperand AlphaTargetLowering:: -LowerVACopy(SDOperand Chain, SDOperand SrcP, Value *SrcV, SDOperand DestP, - Value *DestV, SelectionDAG &DAG) { - SDOperand Val = DAG.getLoad(getPointerTy(), Chain, SrcP, - DAG.getSrcValue(SrcV)); - SDOperand Result = DAG.getNode(ISD::STORE, MVT::Other, Val.getValue(1), - Val, DestP, DAG.getSrcValue(DestV)); - SDOperand NP = DAG.getNode(ISD::ADD, MVT::i64, SrcP, - DAG.getConstant(8, MVT::i64)); - Val = DAG.getExtLoad(ISD::SEXTLOAD, MVT::i64, Result, NP, - DAG.getSrcValue(SrcV, 8), MVT::i32); - SDOperand NPD = DAG.getNode(ISD::ADD, MVT::i64, DestP, - DAG.getConstant(8, MVT::i64)); - return DAG.getNode(ISD::TRUNCSTORE, MVT::Other, Val.getValue(1), - Val, NPD, DAG.getSrcValue(DestV, 8), - DAG.getValueType(MVT::i32)); -} - void AlphaTargetLowering::restoreGP(MachineBasicBlock* BB) { BuildMI(BB, Alpha::BIS, 2, Alpha::R29).addReg(GP).addReg(GP); @@ -680,8 +607,77 @@ SDOperand AlphaTargetLowering::LowerOperation(SDOperand Op, SelectionDAG &DAG) { ARGS.push_back(DAG.getConstant(getUID(), MVT::i64)); return DAG.getNode(Opc, VTS, ARGS); } + case ISD::VAARG: { + SDOperand Chain = Op.getOperand(0); + SDOperand VAListP = Op.getOperand(1); + SDOperand VAListS = Op.getOperand(2); + + SDOperand Base = DAG.getLoad(MVT::i64, Chain, VAListP, VAListS); + SDOperand Tmp = DAG.getNode(ISD::ADD, MVT::i64, VAListP, + DAG.getConstant(8, MVT::i64)); + SDOperand Offset = DAG.getExtLoad(ISD::SEXTLOAD, MVT::i64, Base.getValue(1), + Tmp, DAG.getSrcValue(0), MVT::i32); + SDOperand DataPtr = DAG.getNode(ISD::ADD, MVT::i64, Base, Offset); + if (MVT::isFloatingPoint(Op.getValueType())) + { + //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(MVT::i64, Offset, + DAG.getConstant(8*6, MVT::i64), ISD::SETLT); + DataPtr = DAG.getNode(ISD::SELECT, MVT::i64, CC, FPDataPtr, DataPtr); + } - + SDOperand NewOffset = DAG.getNode(ISD::ADD, MVT::i64, Offset, + DAG.getConstant(8, MVT::i64)); + SDOperand Update = DAG.getNode(ISD::TRUNCSTORE, MVT::Other, + Offset.getValue(1), NewOffset, + Tmp, DAG.getSrcValue(0), + DAG.getValueType(MVT::i32)); + + SDOperand Result; + if (Op.getValueType() == MVT::i32) + Result = DAG.getExtLoad(ISD::SEXTLOAD, MVT::i64, Update, DataPtr, + DAG.getSrcValue(0), MVT::i32); + else + Result = DAG.getLoad(Op.getValueType(), Update, DataPtr, + DAG.getSrcValue(0)); + return Result; + } + case ISD::VACOPY: { + SDOperand Chain = Op.getOperand(0); + SDOperand DestP = Op.getOperand(1); + SDOperand SrcP = Op.getOperand(2); + SDOperand DestS = Op.getOperand(3); + SDOperand SrcS = Op.getOperand(4); + + SDOperand Val = DAG.getLoad(getPointerTy(), Chain, SrcP, SrcS); + SDOperand Result = DAG.getNode(ISD::STORE, MVT::Other, Val.getValue(1), Val, + DestP, DestS); + SDOperand NP = DAG.getNode(ISD::ADD, MVT::i64, SrcP, + DAG.getConstant(8, MVT::i64)); + Val = DAG.getExtLoad(ISD::SEXTLOAD, MVT::i64, Result, NP, + DAG.getSrcValue(0), MVT::i32); + SDOperand NPD = DAG.getNode(ISD::ADD, MVT::i64, DestP, + DAG.getConstant(8, MVT::i64)); + return DAG.getNode(ISD::TRUNCSTORE, MVT::Other, Val.getValue(1), + Val, NPD, DAG.getSrcValue(0),DAG.getValueType(MVT::i32)); + } + case ISD::VASTART: { + SDOperand Chain = Op.getOperand(0); + SDOperand VAListP = Op.getOperand(1); + SDOperand VAListS = Op.getOperand(2); + + // vastart stores the address of the VarArgsBase and VarArgsOffset + SDOperand FR = DAG.getFrameIndex(VarArgsBase, MVT::i64); + SDOperand S1 = DAG.getNode(ISD::STORE, MVT::Other, Chain, FR, VAListP, + VAListS); + SDOperand SA2 = DAG.getNode(ISD::ADD, MVT::i64, VAListP, + DAG.getConstant(8, MVT::i64)); + return DAG.getNode(ISD::TRUNCSTORE, MVT::Other, S1, + DAG.getConstant(VarArgsOffset, MVT::i64), SA2, + DAG.getSrcValue(0), DAG.getValueType(MVT::i32)); + } } return SDOperand(); |
