X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FMSP430%2FMSP430ISelLowering.cpp;h=a4818b2ceb99cf45e8ae7c799f21cfba04e0ae7f;hb=6e0b2a0cb0d398f175a5294bf0ad5488c714e8c2;hp=dc374315171fbdc6d99f49ebff7dbc0f92e0c952;hpb=28b77e968d2b01fc9da724762bd8ddcd80650e32;p=oota-llvm.git diff --git a/lib/Target/MSP430/MSP430ISelLowering.cpp b/lib/Target/MSP430/MSP430ISelLowering.cpp index dc374315171..a4818b2ceb9 100644 --- a/lib/Target/MSP430/MSP430ISelLowering.cpp +++ b/lib/Target/MSP430/MSP430ISelLowering.cpp @@ -16,28 +16,26 @@ #include "MSP430ISelLowering.h" #include "MSP430.h" #include "MSP430MachineFunctionInfo.h" -#include "MSP430TargetMachine.h" #include "MSP430Subtarget.h" -#include "llvm/DerivedTypes.h" -#include "llvm/Function.h" -#include "llvm/Intrinsics.h" -#include "llvm/CallingConv.h" -#include "llvm/GlobalVariable.h" -#include "llvm/GlobalAlias.h" +#include "MSP430TargetMachine.h" #include "llvm/CodeGen/CallingConvLower.h" #include "llvm/CodeGen/MachineFrameInfo.h" #include "llvm/CodeGen/MachineFunction.h" #include "llvm/CodeGen/MachineInstrBuilder.h" #include "llvm/CodeGen/MachineRegisterInfo.h" -#include "llvm/CodeGen/PseudoSourceValue.h" #include "llvm/CodeGen/SelectionDAGISel.h" #include "llvm/CodeGen/TargetLoweringObjectFileImpl.h" #include "llvm/CodeGen/ValueTypes.h" +#include "llvm/IR/CallingConv.h" +#include "llvm/IR/DerivedTypes.h" +#include "llvm/IR/Function.h" +#include "llvm/IR/GlobalAlias.h" +#include "llvm/IR/GlobalVariable.h" +#include "llvm/IR/Intrinsics.h" #include "llvm/Support/CommandLine.h" #include "llvm/Support/Debug.h" #include "llvm/Support/ErrorHandling.h" #include "llvm/Support/raw_ostream.h" -#include "llvm/ADT/VectorExtras.h" using namespace llvm; typedef enum { @@ -61,13 +59,13 @@ HWMultMode("msp430-hwmult-mode", MSP430TargetLowering::MSP430TargetLowering(MSP430TargetMachine &tm) : TargetLowering(tm, new TargetLoweringObjectFileELF()), - Subtarget(*tm.getSubtargetImpl()), TM(tm) { + Subtarget(*tm.getSubtargetImpl()) { - TD = getTargetData(); + TD = getDataLayout(); // Set up the register classes. - addRegisterClass(MVT::i8, MSP430::GR8RegisterClass); - addRegisterClass(MVT::i16, MSP430::GR16RegisterClass); + addRegisterClass(MVT::i8, &MSP430::GR8RegClass); + addRegisterClass(MVT::i16, &MSP430::GR16RegClass); // Compute derived properties from the register classes computeRegisterProperties(); @@ -80,7 +78,6 @@ MSP430TargetLowering::MSP430TargetLowering(MSP430TargetMachine &tm) : setStackPointerRegisterToSaveRestore(MSP430::SPW); setBooleanContents(ZeroOrOneBooleanContent); setBooleanVectorContents(ZeroOrOneBooleanContent); // FIXME: Is this correct? - setSchedulingPreference(Sched::Latency); // We have post-incremented loads / stores. setIndexedLoadAction(ISD::POST_INC, MVT::i8, Legal); @@ -124,8 +121,12 @@ MSP430TargetLowering::MSP430TargetLowering(MSP430TargetMachine &tm) : setOperationAction(ISD::CTTZ, MVT::i8, Expand); setOperationAction(ISD::CTTZ, MVT::i16, Expand); + setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i8, Expand); + setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i16, Expand); setOperationAction(ISD::CTLZ, MVT::i8, Expand); setOperationAction(ISD::CTLZ, MVT::i16, Expand); + setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i8, Expand); + setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i16, Expand); setOperationAction(ISD::CTPOP, MVT::i8, Expand); setOperationAction(ISD::CTPOP, MVT::i16, Expand); @@ -163,6 +164,12 @@ MSP430TargetLowering::MSP430TargetLowering(MSP430TargetMachine &tm) : setOperationAction(ISD::SDIVREM, MVT::i16, Expand); setOperationAction(ISD::SREM, MVT::i16, Expand); + // varargs support + setOperationAction(ISD::VASTART, MVT::Other, Custom); + setOperationAction(ISD::VAARG, MVT::Other, Expand); + setOperationAction(ISD::VAEND, MVT::Other, Expand); + setOperationAction(ISD::VACOPY, MVT::Other, Expand); + // Libcalls names. if (HWMultMode == HWMultIntr) { setLibcallName(RTLIB::MUL_I8, "__mulqi3hw"); @@ -191,9 +198,9 @@ SDValue MSP430TargetLowering::LowerOperation(SDValue Op, case ISD::SIGN_EXTEND: return LowerSIGN_EXTEND(Op, DAG); case ISD::RETURNADDR: return LowerRETURNADDR(Op, DAG); case ISD::FRAMEADDR: return LowerFRAMEADDR(Op, DAG); + case ISD::VASTART: return LowerVASTART(Op, DAG); default: llvm_unreachable("unimplemented operand"); - return SDValue(); } } @@ -226,9 +233,9 @@ getRegForInlineAsmConstraint(const std::string &Constraint, default: break; case 'r': // GENERAL_REGS if (VT == MVT::i8) - return std::make_pair(0U, MSP430::GR8RegisterClass); + return std::make_pair(0U, &MSP430::GR8RegClass); - return std::make_pair(0U, MSP430::GR16RegisterClass); + return std::make_pair(0U, &MSP430::GR16RegClass); } } @@ -247,7 +254,7 @@ MSP430TargetLowering::LowerFormalArguments(SDValue Chain, bool isVarArg, const SmallVectorImpl &Ins, - DebugLoc dl, + SDLoc dl, SelectionDAG &DAG, SmallVectorImpl &InVals) const { @@ -259,24 +266,26 @@ MSP430TargetLowering::LowerFormalArguments(SDValue Chain, case CallingConv::Fast: return LowerCCCArguments(Chain, CallConv, isVarArg, Ins, dl, DAG, InVals); case CallingConv::MSP430_INTR: - if (Ins.empty()) - return Chain; - else { + if (Ins.empty()) + return Chain; report_fatal_error("ISRs cannot have arguments"); - return SDValue(); - } } } SDValue -MSP430TargetLowering::LowerCall(SDValue Chain, SDValue Callee, - CallingConv::ID CallConv, bool isVarArg, - bool &isTailCall, - const SmallVectorImpl &Outs, - const SmallVectorImpl &OutVals, - const SmallVectorImpl &Ins, - DebugLoc dl, SelectionDAG &DAG, +MSP430TargetLowering::LowerCall(TargetLowering::CallLoweringInfo &CLI, SmallVectorImpl &InVals) const { + SelectionDAG &DAG = CLI.DAG; + SDLoc &dl = CLI.DL; + SmallVector &Outs = CLI.Outs; + SmallVector &OutVals = CLI.OutVals; + SmallVector &Ins = CLI.Ins; + SDValue Chain = CLI.Chain; + SDValue Callee = CLI.Callee; + bool &isTailCall = CLI.IsTailCall; + CallingConv::ID CallConv = CLI.CallConv; + bool isVarArg = CLI.IsVarArg; + // MSP430 target does not yet support tail call optimization. isTailCall = false; @@ -289,35 +298,38 @@ MSP430TargetLowering::LowerCall(SDValue Chain, SDValue Callee, Outs, OutVals, Ins, dl, DAG, InVals); case CallingConv::MSP430_INTR: report_fatal_error("ISRs cannot be called directly"); - return SDValue(); } } /// LowerCCCArguments - transform physical registers into virtual registers and /// generate load operations for arguments places on the stack. // FIXME: struct return stuff -// FIXME: varargs SDValue MSP430TargetLowering::LowerCCCArguments(SDValue Chain, CallingConv::ID CallConv, bool isVarArg, const SmallVectorImpl &Ins, - DebugLoc dl, + SDLoc dl, SelectionDAG &DAG, SmallVectorImpl &InVals) const { MachineFunction &MF = DAG.getMachineFunction(); MachineFrameInfo *MFI = MF.getFrameInfo(); MachineRegisterInfo &RegInfo = MF.getRegInfo(); + MSP430MachineFunctionInfo *FuncInfo = MF.getInfo(); // Assign locations to all of the incoming arguments. SmallVector ArgLocs; CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(), - getTargetMachine(), ArgLocs, *DAG.getContext()); + getTargetMachine(), ArgLocs, *DAG.getContext()); CCInfo.AnalyzeFormalArguments(Ins, CC_MSP430); - assert(!isVarArg && "Varargs not supported yet"); + // Create frame index for the start of the first vararg value + if (isVarArg) { + unsigned Offset = CCInfo.getNextStackOffset(); + FuncInfo->setVarArgsFrameIndex(MFI->CreateFixedObject(1, Offset, true)); + } for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) { CCValAssign &VA = ArgLocs[i]; @@ -334,8 +346,7 @@ MSP430TargetLowering::LowerCCCArguments(SDValue Chain, llvm_unreachable(0); } case MVT::i16: - unsigned VReg = - RegInfo.createVirtualRegister(MSP430::GR16RegisterClass); + unsigned VReg = RegInfo.createVirtualRegister(&MSP430::GR16RegClass); RegInfo.addLiveIn(VA.getLocReg(), VReg); SDValue ArgValue = DAG.getCopyFromReg(Chain, dl, VReg, RegVT); @@ -357,22 +368,34 @@ MSP430TargetLowering::LowerCCCArguments(SDValue Chain, } else { // Sanity check assert(VA.isMemLoc()); - // Load the argument to a virtual register - unsigned ObjSize = VA.getLocVT().getSizeInBits()/8; - if (ObjSize > 2) { - errs() << "LowerFormalArguments Unhandled argument type: " - << EVT(VA.getLocVT()).getEVTString() - << "\n"; + + SDValue InVal; + ISD::ArgFlagsTy Flags = Ins[i].Flags; + + if (Flags.isByVal()) { + int FI = MFI->CreateFixedObject(Flags.getByValSize(), + VA.getLocMemOffset(), true); + InVal = DAG.getFrameIndex(FI, getPointerTy()); + } else { + // Load the argument to a virtual register + unsigned ObjSize = VA.getLocVT().getSizeInBits()/8; + if (ObjSize > 2) { + errs() << "LowerFormalArguments Unhandled argument type: " + << EVT(VA.getLocVT()).getEVTString() + << "\n"; + } + // Create the frame index object for this incoming parameter... + int FI = MFI->CreateFixedObject(ObjSize, VA.getLocMemOffset(), true); + + // Create the SelectionDAG nodes corresponding to a load + //from this parameter + SDValue FIN = DAG.getFrameIndex(FI, MVT::i16); + InVal = DAG.getLoad(VA.getLocVT(), dl, Chain, FIN, + MachinePointerInfo::getFixedStack(FI), + false, false, false, 0); } - // Create the frame index object for this incoming parameter... - int FI = MFI->CreateFixedObject(ObjSize, VA.getLocMemOffset(), true); - - // Create the SelectionDAG nodes corresponding to a load - //from this parameter - SDValue FIN = DAG.getFrameIndex(FI, MVT::i16); - InVals.push_back(DAG.getLoad(VA.getLocVT(), dl, Chain, FIN, - MachinePointerInfo::getFixedStack(FI), - false, false, 0)); + + InVals.push_back(InVal); } } @@ -384,33 +407,24 @@ MSP430TargetLowering::LowerReturn(SDValue Chain, CallingConv::ID CallConv, bool isVarArg, const SmallVectorImpl &Outs, const SmallVectorImpl &OutVals, - DebugLoc dl, SelectionDAG &DAG) const { + SDLoc dl, SelectionDAG &DAG) const { // CCValAssign - represent the assignment of the return value to a location SmallVector RVLocs; // ISRs cannot return any value. - if (CallConv == CallingConv::MSP430_INTR && !Outs.empty()) { + if (CallConv == CallingConv::MSP430_INTR && !Outs.empty()) report_fatal_error("ISRs cannot return any value"); - return SDValue(); - } // CCState - Info about the registers and stack slot. CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(), - getTargetMachine(), RVLocs, *DAG.getContext()); + getTargetMachine(), RVLocs, *DAG.getContext()); // Analize return values. CCInfo.AnalyzeReturn(Outs, RetCC_MSP430); - // If this is the first return lowered for this function, add the regs to the - // liveout set for the function. - if (DAG.getMachineFunction().getRegInfo().liveout_empty()) { - for (unsigned i = 0; i != RVLocs.size(); ++i) - if (RVLocs[i].isRegLoc()) - DAG.getMachineFunction().getRegInfo().addLiveOut(RVLocs[i].getLocReg()); - } - SDValue Flag; + SmallVector RetOps(1, Chain); // Copy the result values into the output registers. for (unsigned i = 0; i != RVLocs.size(); ++i) { @@ -423,16 +437,19 @@ MSP430TargetLowering::LowerReturn(SDValue Chain, // Guarantee that all emitted copies are stuck together, // avoiding something bad. Flag = Chain.getValue(1); + RetOps.push_back(DAG.getRegister(VA.getLocReg(), VA.getLocVT())); } unsigned Opc = (CallConv == CallingConv::MSP430_INTR ? MSP430ISD::RETI_FLAG : MSP430ISD::RET_FLAG); + RetOps[0] = Chain; // Update chain. + + // Add the flag if we have it. if (Flag.getNode()) - return DAG.getNode(Opc, dl, MVT::Other, Chain, Flag); + RetOps.push_back(Flag); - // Return Void - return DAG.getNode(Opc, dl, MVT::Other, Chain); + return DAG.getNode(Opc, dl, MVT::Other, &RetOps[0], RetOps.size()); } /// LowerCCCCallTo - functions arguments are copied from virtual regs to @@ -446,12 +463,12 @@ MSP430TargetLowering::LowerCCCCallTo(SDValue Chain, SDValue Callee, &Outs, const SmallVectorImpl &OutVals, const SmallVectorImpl &Ins, - DebugLoc dl, SelectionDAG &DAG, + SDLoc dl, SelectionDAG &DAG, SmallVectorImpl &InVals) const { // Analyze operands of the call, assigning locations to each operand. SmallVector ArgLocs; CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(), - getTargetMachine(), ArgLocs, *DAG.getContext()); + getTargetMachine(), ArgLocs, *DAG.getContext()); CCInfo.AnalyzeCallOperands(Outs, CC_MSP430); @@ -459,7 +476,8 @@ MSP430TargetLowering::LowerCCCCallTo(SDValue Chain, SDValue Callee, unsigned NumBytes = CCInfo.getNextStackOffset(); Chain = DAG.getCALLSEQ_START(Chain ,DAG.getConstant(NumBytes, - getPointerTy(), true)); + getPointerTy(), true), + dl); SmallVector, 4> RegsToPass; SmallVector MemOpChains; @@ -500,9 +518,23 @@ MSP430TargetLowering::LowerCCCCallTo(SDValue Chain, SDValue Callee, StackPtr, DAG.getIntPtrConstant(VA.getLocMemOffset())); + SDValue MemOp; + ISD::ArgFlagsTy Flags = Outs[i].Flags; + + if (Flags.isByVal()) { + SDValue SizeNode = DAG.getConstant(Flags.getByValSize(), MVT::i16); + MemOp = DAG.getMemcpy(Chain, dl, PtrOff, Arg, SizeNode, + Flags.getByValAlign(), + /*isVolatile*/false, + /*AlwaysInline=*/true, + MachinePointerInfo(), + MachinePointerInfo()); + } else { + MemOp = DAG.getStore(Chain, dl, Arg, PtrOff, MachinePointerInfo(), + false, false, 0); + } - MemOpChains.push_back(DAG.getStore(Chain, dl, Arg, PtrOff, - MachinePointerInfo(),false, false, 0)); + MemOpChains.push_back(MemOp); } } @@ -552,7 +584,7 @@ MSP430TargetLowering::LowerCCCCallTo(SDValue Chain, SDValue Callee, Chain = DAG.getCALLSEQ_END(Chain, DAG.getConstant(NumBytes, getPointerTy(), true), DAG.getConstant(0, getPointerTy(), true), - InFlag); + InFlag, dl); InFlag = Chain.getValue(1); // Handle result values, copying them out of physregs into vregs that we @@ -568,13 +600,13 @@ SDValue MSP430TargetLowering::LowerCallResult(SDValue Chain, SDValue InFlag, CallingConv::ID CallConv, bool isVarArg, const SmallVectorImpl &Ins, - DebugLoc dl, SelectionDAG &DAG, + SDLoc dl, SelectionDAG &DAG, SmallVectorImpl &InVals) const { // Assign locations to each value returned by this call. SmallVector RVLocs; CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(), - getTargetMachine(), RVLocs, *DAG.getContext()); + getTargetMachine(), RVLocs, *DAG.getContext()); CCInfo.AnalyzeCallResult(Ins, RetCC_MSP430); @@ -594,13 +626,12 @@ SDValue MSP430TargetLowering::LowerShifts(SDValue Op, unsigned Opc = Op.getOpcode(); SDNode* N = Op.getNode(); EVT VT = Op.getValueType(); - DebugLoc dl = N->getDebugLoc(); + SDLoc dl(N); // Expand non-constant shifts to loops: if (!isa(N->getOperand(1))) switch (Opc) { - default: - assert(0 && "Invalid shift opcode!"); + default: llvm_unreachable("Invalid shift opcode!"); case ISD::SHL: return DAG.getNode(MSP430ISD::SHL, dl, VT, N->getOperand(0), N->getOperand(1)); @@ -639,33 +670,33 @@ SDValue MSP430TargetLowering::LowerGlobalAddress(SDValue Op, int64_t Offset = cast(Op)->getOffset(); // Create the TargetGlobalAddress node, folding in the constant offset. - SDValue Result = DAG.getTargetGlobalAddress(GV, Op.getDebugLoc(), + SDValue Result = DAG.getTargetGlobalAddress(GV, SDLoc(Op), getPointerTy(), Offset); - return DAG.getNode(MSP430ISD::Wrapper, Op.getDebugLoc(), + return DAG.getNode(MSP430ISD::Wrapper, SDLoc(Op), getPointerTy(), Result); } SDValue MSP430TargetLowering::LowerExternalSymbol(SDValue Op, SelectionDAG &DAG) const { - DebugLoc dl = Op.getDebugLoc(); + SDLoc dl(Op); const char *Sym = cast(Op)->getSymbol(); SDValue Result = DAG.getTargetExternalSymbol(Sym, getPointerTy()); - return DAG.getNode(MSP430ISD::Wrapper, dl, getPointerTy(), Result);; + return DAG.getNode(MSP430ISD::Wrapper, dl, getPointerTy(), Result); } SDValue MSP430TargetLowering::LowerBlockAddress(SDValue Op, SelectionDAG &DAG) const { - DebugLoc dl = Op.getDebugLoc(); + SDLoc dl(Op); const BlockAddress *BA = cast(Op)->getBlockAddress(); - SDValue Result = DAG.getBlockAddress(BA, getPointerTy(), /*isTarget=*/true); + SDValue Result = DAG.getTargetBlockAddress(BA, getPointerTy()); - return DAG.getNode(MSP430ISD::Wrapper, dl, getPointerTy(), Result);; + return DAG.getNode(MSP430ISD::Wrapper, dl, getPointerTy(), Result); } static SDValue EmitCMP(SDValue &LHS, SDValue &RHS, SDValue &TargetCC, ISD::CondCode CC, - DebugLoc dl, SelectionDAG &DAG) { + SDLoc dl, SelectionDAG &DAG) { // FIXME: Handle bittests someday assert(!LHS.getValueType().isFloatingPoint() && "We don't handle FP yet"); @@ -752,7 +783,7 @@ SDValue MSP430TargetLowering::LowerBR_CC(SDValue Op, SelectionDAG &DAG) const { SDValue LHS = Op.getOperand(2); SDValue RHS = Op.getOperand(3); SDValue Dest = Op.getOperand(4); - DebugLoc dl = Op.getDebugLoc(); + SDLoc dl (Op); SDValue TargetCC; SDValue Flag = EmitCMP(LHS, RHS, TargetCC, CC, dl, DAG); @@ -764,7 +795,7 @@ SDValue MSP430TargetLowering::LowerBR_CC(SDValue Op, SelectionDAG &DAG) const { SDValue MSP430TargetLowering::LowerSETCC(SDValue Op, SelectionDAG &DAG) const { SDValue LHS = Op.getOperand(0); SDValue RHS = Op.getOperand(1); - DebugLoc dl = Op.getDebugLoc(); + SDLoc dl (Op); // If we are doing an AND and testing against zero, then the CMP // will not be generated. The AND (or BIT) will generate the condition codes, @@ -848,7 +879,7 @@ SDValue MSP430TargetLowering::LowerSELECT_CC(SDValue Op, SDValue TrueV = Op.getOperand(2); SDValue FalseV = Op.getOperand(3); ISD::CondCode CC = cast(Op.getOperand(4))->get(); - DebugLoc dl = Op.getDebugLoc(); + SDLoc dl (Op); SDValue TargetCC; SDValue Flag = EmitCMP(LHS, RHS, TargetCC, CC, dl, DAG); @@ -867,7 +898,7 @@ SDValue MSP430TargetLowering::LowerSIGN_EXTEND(SDValue Op, SelectionDAG &DAG) const { SDValue Val = Op.getOperand(0); EVT VT = Op.getValueType(); - DebugLoc dl = Op.getDebugLoc(); + SDLoc dl(Op); assert(VT == MVT::i16 && "Only support i16 for now!"); @@ -899,7 +930,7 @@ SDValue MSP430TargetLowering::LowerRETURNADDR(SDValue Op, MFI->setReturnAddressIsTaken(true); unsigned Depth = cast(Op.getOperand(0))->getZExtValue(); - DebugLoc dl = Op.getDebugLoc(); + SDLoc dl(Op); if (Depth > 0) { SDValue FrameAddr = LowerFRAMEADDR(Op, DAG); @@ -908,13 +939,13 @@ SDValue MSP430TargetLowering::LowerRETURNADDR(SDValue Op, return DAG.getLoad(getPointerTy(), dl, DAG.getEntryNode(), DAG.getNode(ISD::ADD, dl, getPointerTy(), FrameAddr, Offset), - MachinePointerInfo(), false, false, 0); + MachinePointerInfo(), false, false, false, 0); } // Just load the return address. SDValue RetAddrFI = getReturnAddressFrameIndex(DAG); return DAG.getLoad(getPointerTy(), dl, DAG.getEntryNode(), - RetAddrFI, MachinePointerInfo(), false, false, 0); + RetAddrFI, MachinePointerInfo(), false, false, false, 0); } SDValue MSP430TargetLowering::LowerFRAMEADDR(SDValue Op, @@ -923,17 +954,33 @@ SDValue MSP430TargetLowering::LowerFRAMEADDR(SDValue Op, MFI->setFrameAddressIsTaken(true); EVT VT = Op.getValueType(); - DebugLoc dl = Op.getDebugLoc(); // FIXME probably not meaningful + SDLoc dl(Op); // FIXME probably not meaningful unsigned Depth = cast(Op.getOperand(0))->getZExtValue(); SDValue FrameAddr = DAG.getCopyFromReg(DAG.getEntryNode(), dl, MSP430::FPW, VT); while (Depth--) FrameAddr = DAG.getLoad(VT, dl, DAG.getEntryNode(), FrameAddr, MachinePointerInfo(), - false, false, 0); + false, false, false, 0); return FrameAddr; } +SDValue MSP430TargetLowering::LowerVASTART(SDValue Op, + SelectionDAG &DAG) const { + MachineFunction &MF = DAG.getMachineFunction(); + MSP430MachineFunctionInfo *FuncInfo = MF.getInfo(); + + // Frame index of first vararg argument + SDValue FrameIndex = DAG.getFrameIndex(FuncInfo->getVarArgsFrameIndex(), + getPointerTy()); + const Value *SV = cast(Op.getOperand(2))->getValue(); + + // Create a store of the frame index to the location operand + return DAG.getStore(Op.getOperand(0), SDLoc(Op), FrameIndex, + Op.getOperand(1), MachinePointerInfo(SV), + false, false, 0); +} + /// getPostIndexedAddressParts - returns true by value, base pointer and /// offset pointer and addressing mode by reference if this node can be /// combined with a load / store to form a post-indexed load / store. @@ -1013,6 +1060,10 @@ bool MSP430TargetLowering::isZExtFree(EVT VT1, EVT VT2) const { return 0 && VT1 == MVT::i8 && VT2 == MVT::i16; } +bool MSP430TargetLowering::isZExtFree(SDValue Val, EVT VT2) const { + return isZExtFree(Val.getValueType(), VT2); +} + //===----------------------------------------------------------------------===// // Other Lowering Code //===----------------------------------------------------------------------===// @@ -1028,31 +1079,30 @@ MSP430TargetLowering::EmitShiftInstr(MachineInstr *MI, unsigned Opc; const TargetRegisterClass * RC; switch (MI->getOpcode()) { - default: - assert(0 && "Invalid shift opcode!"); + default: llvm_unreachable("Invalid shift opcode!"); case MSP430::Shl8: Opc = MSP430::SHL8r1; - RC = MSP430::GR8RegisterClass; + RC = &MSP430::GR8RegClass; break; case MSP430::Shl16: Opc = MSP430::SHL16r1; - RC = MSP430::GR16RegisterClass; + RC = &MSP430::GR16RegClass; break; case MSP430::Sra8: Opc = MSP430::SAR8r1; - RC = MSP430::GR8RegisterClass; + RC = &MSP430::GR8RegClass; break; case MSP430::Sra16: Opc = MSP430::SAR16r1; - RC = MSP430::GR16RegisterClass; + RC = &MSP430::GR16RegClass; break; case MSP430::Srl8: Opc = MSP430::SAR8r1c; - RC = MSP430::GR8RegisterClass; + RC = &MSP430::GR8RegClass; break; case MSP430::Srl16: Opc = MSP430::SAR16r1c; - RC = MSP430::GR16RegisterClass; + RC = &MSP430::GR16RegClass; break; } @@ -1080,8 +1130,8 @@ MSP430TargetLowering::EmitShiftInstr(MachineInstr *MI, LoopBB->addSuccessor(RemBB); LoopBB->addSuccessor(LoopBB); - unsigned ShiftAmtReg = RI.createVirtualRegister(MSP430::GR8RegisterClass); - unsigned ShiftAmtReg2 = RI.createVirtualRegister(MSP430::GR8RegisterClass); + unsigned ShiftAmtReg = RI.createVirtualRegister(&MSP430::GR8RegClass); + unsigned ShiftAmtReg2 = RI.createVirtualRegister(&MSP430::GR8RegClass); unsigned ShiftReg = RI.createVirtualRegister(RC); unsigned ShiftReg2 = RI.createVirtualRegister(RC); unsigned ShiftAmtSrcReg = MI->getOperand(2).getReg();