From d2ea0e10cbd158c93fb870cdd03001b9cd1156b8 Mon Sep 17 00:00:00 2001 From: Justin Holewinski Date: Fri, 25 May 2012 16:35:28 +0000 Subject: Change interface for TargetLowering::LowerCallTo and TargetLowering::LowerCall to pass around a struct instead of a large set of individual values. This cleans up the interface and allows more information to be added to the struct for future targets without requiring changes to each and every target. NV_CONTRIB git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157479 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 100 ++++++++++------------- 1 file changed, 44 insertions(+), 56 deletions(-) (limited to 'lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp') diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp index b5fec7baba..a9b7f666de 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -5065,13 +5065,14 @@ SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I, unsigned Intrinsic) { return 0; } TargetLowering::ArgListTy Args; - std::pair Result = - TLI.LowerCallTo(getRoot(), I.getType(), + TargetLowering:: + CallLoweringInfo CLI(getRoot(), I.getType(), false, false, false, false, 0, CallingConv::C, /*isTailCall=*/false, /*doesNotRet=*/false, /*isReturnValueUsed=*/true, DAG.getExternalSymbol(TrapFuncName.data(), TLI.getPointerTy()), Args, DAG, getCurDebugLoc()); + std::pair Result = TLI.LowerCallTo(CLI); DAG.setRoot(Result.second); return 0; } @@ -5238,16 +5239,10 @@ void SelectionDAGBuilder::LowerCallTo(ImmutableCallSite CS, SDValue Callee, if (isTailCall && TM.Options.EnableFastISel) isTailCall = false; - std::pair Result = - TLI.LowerCallTo(getRoot(), RetTy, - CS.paramHasAttr(0, Attribute::SExt), - CS.paramHasAttr(0, Attribute::ZExt), FTy->isVarArg(), - CS.paramHasAttr(0, Attribute::InReg), FTy->getNumParams(), - CS.getCallingConv(), - isTailCall, - CS.doesNotReturn(), - !CS.getInstruction()->use_empty(), - Callee, Args, DAG, getCurDebugLoc()); + TargetLowering:: + CallLoweringInfo CLI(getRoot(), RetTy, FTy, isTailCall, Callee, Args, DAG, + getCurDebugLoc(), CS); + std::pair Result = TLI.LowerCallTo(CLI); assert((isTailCall || Result.second.getNode()) && "Non-null chain expected with non-tail call!"); assert((Result.second.getNode() || !Result.first.getNode()) && @@ -6345,24 +6340,18 @@ void SelectionDAGBuilder::visitVACopy(const CallInst &I) { /// FIXME: When all targets are /// migrated to using LowerCall, this hook should be integrated into SDISel. std::pair -TargetLowering::LowerCallTo(SDValue Chain, Type *RetTy, - bool RetSExt, bool RetZExt, bool isVarArg, - bool isInreg, unsigned NumFixedArgs, - CallingConv::ID CallConv, bool isTailCall, - bool doesNotRet, bool isReturnValueUsed, - SDValue Callee, - ArgListTy &Args, SelectionDAG &DAG, - DebugLoc dl) const { +TargetLowering::LowerCallTo(TargetLowering::CallLoweringInfo &CLI) const { // Handle all of the outgoing arguments. - SmallVector Outs; - SmallVector OutVals; + CLI.Outs.clear(); + CLI.OutVals.clear(); + ArgListTy &Args = CLI.Args; for (unsigned i = 0, e = Args.size(); i != e; ++i) { SmallVector ValueVTs; ComputeValueVTs(*this, Args[i].Ty, ValueVTs); for (unsigned Value = 0, NumValues = ValueVTs.size(); Value != NumValues; ++Value) { EVT VT = ValueVTs[Value]; - Type *ArgTy = VT.getTypeForEVT(RetTy->getContext()); + Type *ArgTy = VT.getTypeForEVT(CLI.RetTy->getContext()); SDValue Op = SDValue(Args[i].Node.getNode(), Args[i].Node.getResNo() + Value); ISD::ArgFlagsTy Flags; @@ -6395,8 +6384,8 @@ TargetLowering::LowerCallTo(SDValue Chain, Type *RetTy, Flags.setNest(); Flags.setOrigAlign(OriginalAlignment); - EVT PartVT = getRegisterType(RetTy->getContext(), VT); - unsigned NumParts = getNumRegisters(RetTy->getContext(), VT); + EVT PartVT = getRegisterType(CLI.RetTy->getContext(), VT); + unsigned NumParts = getNumRegisters(CLI.RetTy->getContext(), VT); SmallVector Parts(NumParts); ISD::NodeType ExtendKind = ISD::ANY_EXTEND; @@ -6405,89 +6394,88 @@ TargetLowering::LowerCallTo(SDValue Chain, Type *RetTy, else if (Args[i].isZExt) ExtendKind = ISD::ZERO_EXTEND; - getCopyToParts(DAG, dl, Op, &Parts[0], NumParts, + getCopyToParts(CLI.DAG, CLI.DL, Op, &Parts[0], NumParts, PartVT, ExtendKind); for (unsigned j = 0; j != NumParts; ++j) { // if it isn't first piece, alignment must be 1 ISD::OutputArg MyFlags(Flags, Parts[j].getValueType(), - i < NumFixedArgs); + i < CLI.NumFixedArgs); if (NumParts > 1 && j == 0) MyFlags.Flags.setSplit(); else if (j != 0) MyFlags.Flags.setOrigAlign(1); - Outs.push_back(MyFlags); - OutVals.push_back(Parts[j]); + CLI.Outs.push_back(MyFlags); + CLI.OutVals.push_back(Parts[j]); } } } // Handle the incoming return values from the call. - SmallVector Ins; + CLI.Ins.clear(); SmallVector RetTys; - ComputeValueVTs(*this, RetTy, RetTys); + ComputeValueVTs(*this, CLI.RetTy, RetTys); for (unsigned I = 0, E = RetTys.size(); I != E; ++I) { EVT VT = RetTys[I]; - EVT RegisterVT = getRegisterType(RetTy->getContext(), VT); - unsigned NumRegs = getNumRegisters(RetTy->getContext(), VT); + EVT RegisterVT = getRegisterType(CLI.RetTy->getContext(), VT); + unsigned NumRegs = getNumRegisters(CLI.RetTy->getContext(), VT); for (unsigned i = 0; i != NumRegs; ++i) { ISD::InputArg MyFlags; MyFlags.VT = RegisterVT.getSimpleVT(); - MyFlags.Used = isReturnValueUsed; - if (RetSExt) + MyFlags.Used = CLI.IsReturnValueUsed; + if (CLI.RetSExt) MyFlags.Flags.setSExt(); - if (RetZExt) + if (CLI.RetZExt) MyFlags.Flags.setZExt(); - if (isInreg) + if (CLI.IsInReg) MyFlags.Flags.setInReg(); - Ins.push_back(MyFlags); + CLI.Ins.push_back(MyFlags); } } SmallVector InVals; - Chain = LowerCall(Chain, Callee, CallConv, isVarArg, doesNotRet, isTailCall, - Outs, OutVals, Ins, dl, DAG, InVals); + CLI.Chain = LowerCall(CLI, InVals); // Verify that the target's LowerCall behaved as expected. - assert(Chain.getNode() && Chain.getValueType() == MVT::Other && + assert(CLI.Chain.getNode() && CLI.Chain.getValueType() == MVT::Other && "LowerCall didn't return a valid chain!"); - assert((!isTailCall || InVals.empty()) && + assert((!CLI.IsTailCall || InVals.empty()) && "LowerCall emitted a return value for a tail call!"); - assert((isTailCall || InVals.size() == Ins.size()) && + assert((CLI.IsTailCall || InVals.size() == CLI.Ins.size()) && "LowerCall didn't emit the correct number of values!"); // For a tail call, the return value is merely live-out and there aren't // any nodes in the DAG representing it. Return a special value to // indicate that a tail call has been emitted and no more Instructions // should be processed in the current block. - if (isTailCall) { - DAG.setRoot(Chain); + if (CLI.IsTailCall) { + CLI.DAG.setRoot(CLI.Chain); return std::make_pair(SDValue(), SDValue()); } - DEBUG(for (unsigned i = 0, e = Ins.size(); i != e; ++i) { + DEBUG(for (unsigned i = 0, e = CLI.Ins.size(); i != e; ++i) { assert(InVals[i].getNode() && "LowerCall emitted a null value!"); - assert(EVT(Ins[i].VT) == InVals[i].getValueType() && + assert(EVT(CLI.Ins[i].VT) == InVals[i].getValueType() && "LowerCall emitted a value with the wrong type!"); }); // Collect the legal value parts into potentially illegal values // that correspond to the original function's return values. ISD::NodeType AssertOp = ISD::DELETED_NODE; - if (RetSExt) + if (CLI.RetSExt) AssertOp = ISD::AssertSext; - else if (RetZExt) + else if (CLI.RetZExt) AssertOp = ISD::AssertZext; SmallVector ReturnValues; unsigned CurReg = 0; for (unsigned I = 0, E = RetTys.size(); I != E; ++I) { EVT VT = RetTys[I]; - EVT RegisterVT = getRegisterType(RetTy->getContext(), VT); - unsigned NumRegs = getNumRegisters(RetTy->getContext(), VT); + EVT RegisterVT = getRegisterType(CLI.RetTy->getContext(), VT); + unsigned NumRegs = getNumRegisters(CLI.RetTy->getContext(), VT); - ReturnValues.push_back(getCopyFromParts(DAG, dl, &InVals[CurReg], + ReturnValues.push_back(getCopyFromParts(CLI.DAG, CLI.DL, &InVals[CurReg], NumRegs, RegisterVT, VT, AssertOp)); CurReg += NumRegs; @@ -6497,12 +6485,12 @@ TargetLowering::LowerCallTo(SDValue Chain, Type *RetTy, // such a node, so we just return a null return value in that case. In // that case, nothing will actually look at the value. if (ReturnValues.empty()) - return std::make_pair(SDValue(), Chain); + return std::make_pair(SDValue(), CLI.Chain); - SDValue Res = DAG.getNode(ISD::MERGE_VALUES, dl, - DAG.getVTList(&RetTys[0], RetTys.size()), + SDValue Res = CLI.DAG.getNode(ISD::MERGE_VALUES, CLI.DL, + CLI.DAG.getVTList(&RetTys[0], RetTys.size()), &ReturnValues[0], ReturnValues.size()); - return std::make_pair(Res, Chain); + return std::make_pair(Res, CLI.Chain); } void TargetLowering::LowerOperationWrapper(SDNode *N, -- cgit v1.2.3-18-g5258