#include "AlphaISelLowering.h"
#include "AlphaTargetMachine.h"
+#include "AlphaMachineFunctionInfo.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/SelectionDAG.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
+#include "llvm/CodeGen/PseudoSourceValue.h"
+#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
#include "llvm/Constants.h"
#include "llvm/Function.h"
#include "llvm/Module.h"
#include "llvm/Intrinsics.h"
#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/raw_ostream.h"
using namespace llvm;
/// AddLiveIn - This helper function adds the specified physical register to the
return VReg;
}
-AlphaTargetLowering::AlphaTargetLowering(TargetMachine &TM) : TargetLowering(TM) {
+AlphaTargetLowering::AlphaTargetLowering(TargetMachine &TM)
+ : TargetLowering(TM, new TargetLoweringObjectFileELF()) {
// Set up the TargetLowering object.
- //I am having problems with shr n ubyte 1
+ //I am having problems with shr n i8 1
setShiftAmountType(MVT::i64);
setBooleanContents(ZeroOrOneBooleanContent);
-
- setUsesGlobalOffsetTable(true);
-
+
addRegisterClass(MVT::i64, Alpha::GPRCRegisterClass);
addRegisterClass(MVT::f64, Alpha::F8RCRegisterClass);
addRegisterClass(MVT::f32, Alpha::F4RCRegisterClass);
setLoadExtAction(ISD::EXTLOAD, MVT::i1, Promote);
setLoadExtAction(ISD::EXTLOAD, MVT::f32, Expand);
-
+
setLoadExtAction(ISD::ZEXTLOAD, MVT::i1, Promote);
setLoadExtAction(ISD::ZEXTLOAD, MVT::i32, Expand);
-
+
setLoadExtAction(ISD::SEXTLOAD, MVT::i1, Promote);
setLoadExtAction(ISD::SEXTLOAD, MVT::i8, Expand);
setLoadExtAction(ISD::SEXTLOAD, MVT::i16, Expand);
+ setTruncStoreAction(MVT::f64, MVT::f32, Expand);
+
// setOperationAction(ISD::BRIND, MVT::Other, Expand);
setOperationAction(ISD::BR_JT, MVT::Other, Expand);
setOperationAction(ISD::BR_CC, MVT::Other, Expand);
- setOperationAction(ISD::SELECT_CC, MVT::Other, Expand);
+ setOperationAction(ISD::SELECT_CC, MVT::Other, Expand);
setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i1, Expand);
setOperationAction(ISD::FREM, MVT::f32, Expand);
setOperationAction(ISD::FREM, MVT::f64, Expand);
-
+
setOperationAction(ISD::UINT_TO_FP, MVT::i64, Expand);
setOperationAction(ISD::SINT_TO_FP, MVT::i64, Custom);
setOperationAction(ISD::FP_TO_UINT, MVT::i64, Expand);
setOperationAction(ISD::BSWAP , MVT::i64, Expand);
setOperationAction(ISD::ROTL , MVT::i64, Expand);
setOperationAction(ISD::ROTR , MVT::i64, Expand);
-
+
setOperationAction(ISD::SREM , MVT::i64, Custom);
setOperationAction(ISD::UREM , MVT::i64, Custom);
setOperationAction(ISD::SDIV , MVT::i64, Custom);
setOperationAction(ISD::UMUL_LOHI, MVT::i64, Expand);
setOperationAction(ISD::SMUL_LOHI, MVT::i64, Expand);
+ setOperationAction(ISD::SRL_PARTS, MVT::i64, Custom);
+ setOperationAction(ISD::SRA_PARTS, MVT::i64, Expand);
+ setOperationAction(ISD::SHL_PARTS, MVT::i64, Expand);
// We don't support sin/cos/sqrt/pow
setOperationAction(ISD::FSIN , MVT::f64, Expand);
setOperationAction(ISD::BIT_CONVERT, MVT::f32, Promote);
- // We don't have line number support yet.
- setOperationAction(ISD::DBG_STOPPOINT, MVT::Other, Expand);
- setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand);
- setOperationAction(ISD::DBG_LABEL, MVT::Other, Expand);
setOperationAction(ISD::EH_LABEL, MVT::Other, Expand);
// Not implemented yet.
- setOperationAction(ISD::STACKSAVE, MVT::Other, Expand);
+ setOperationAction(ISD::STACKSAVE, MVT::Other, Expand);
setOperationAction(ISD::STACKRESTORE, MVT::Other, Expand);
setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i64, Expand);
setOperationAction(ISD::VAARG, MVT::Other, Custom);
setOperationAction(ISD::VAARG, MVT::i32, Custom);
- setOperationAction(ISD::RET, MVT::Other, Custom);
-
setOperationAction(ISD::JumpTable, MVT::i64, Custom);
setOperationAction(ISD::JumpTable, MVT::i32, Custom);
setStackPointerRegisterToSaveRestore(Alpha::R30);
- addLegalFPImmediate(APFloat(+0.0)); //F31
- addLegalFPImmediate(APFloat(+0.0f)); //F31
- addLegalFPImmediate(APFloat(-0.0)); //-F31
- addLegalFPImmediate(APFloat(-0.0f)); //-F31
-
setJumpBufSize(272);
setJumpBufAlignment(16);
computeRegisterProperties();
}
-MVT AlphaTargetLowering::getSetCCResultType(MVT VT) const {
+MVT::SimpleValueType AlphaTargetLowering::getSetCCResultType(EVT VT) const {
return MVT::i64;
}
}
}
+/// getFunctionAlignment - Return the Log2 alignment of this function.
+unsigned AlphaTargetLowering::getFunctionAlignment(const Function *F) const {
+ return 4;
+}
+
static SDValue LowerJumpTable(SDValue Op, SelectionDAG &DAG) {
- MVT PtrVT = Op.getValueType();
+ EVT PtrVT = Op.getValueType();
JumpTableSDNode *JT = cast<JumpTableSDNode>(Op);
SDValue JTI = DAG.getTargetJumpTable(JT->getIndex(), PtrVT);
- SDValue Zero = DAG.getConstant(0, PtrVT);
// FIXME there isn't really any debug info here
DebugLoc dl = Op.getDebugLoc();
-
+
SDValue Hi = DAG.getNode(AlphaISD::GPRelHi, dl, MVT::i64, JTI,
DAG.getGLOBAL_OFFSET_TABLE(MVT::i64));
SDValue Lo = DAG.getNode(AlphaISD::GPRelLo, dl, MVT::i64, JTI, Hi);
// //#define GP $29
// //#define SP $30
-static SDValue LowerFORMAL_ARGUMENTS(SDValue Op, SelectionDAG &DAG,
- int &VarArgsBase,
- int &VarArgsOffset) {
+#include "AlphaGenCallingConv.inc"
+
+SDValue
+AlphaTargetLowering::LowerCall(SDValue Chain, SDValue Callee,
+ CallingConv::ID CallConv, bool isVarArg,
+ bool &isTailCall,
+ const SmallVectorImpl<ISD::OutputArg> &Outs,
+ const SmallVectorImpl<ISD::InputArg> &Ins,
+ DebugLoc dl, SelectionDAG &DAG,
+ SmallVectorImpl<SDValue> &InVals) const {
+ // Alpha target does not yet support tail call optimization.
+ isTailCall = false;
+
+ // Analyze operands of the call, assigning locations to each operand.
+ SmallVector<CCValAssign, 16> ArgLocs;
+ CCState CCInfo(CallConv, isVarArg, getTargetMachine(),
+ ArgLocs, *DAG.getContext());
+
+ CCInfo.AnalyzeCallOperands(Outs, CC_Alpha);
+
+ // Get a count of how many bytes are to be pushed on the stack.
+ unsigned NumBytes = CCInfo.getNextStackOffset();
+
+ Chain = DAG.getCALLSEQ_START(Chain, DAG.getConstant(NumBytes,
+ getPointerTy(), true));
+
+ SmallVector<std::pair<unsigned, SDValue>, 4> RegsToPass;
+ SmallVector<SDValue, 12> MemOpChains;
+ SDValue StackPtr;
+
+ // Walk the register/memloc assignments, inserting copies/loads.
+ for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
+ CCValAssign &VA = ArgLocs[i];
+
+ SDValue Arg = Outs[i].Val;
+
+ // Promote the value if needed.
+ switch (VA.getLocInfo()) {
+ default: assert(0 && "Unknown loc info!");
+ case CCValAssign::Full: break;
+ case CCValAssign::SExt:
+ Arg = DAG.getNode(ISD::SIGN_EXTEND, dl, VA.getLocVT(), Arg);
+ break;
+ case CCValAssign::ZExt:
+ Arg = DAG.getNode(ISD::ZERO_EXTEND, dl, VA.getLocVT(), Arg);
+ break;
+ case CCValAssign::AExt:
+ Arg = DAG.getNode(ISD::ANY_EXTEND, dl, VA.getLocVT(), Arg);
+ break;
+ }
+
+ // Arguments that can be passed on register must be kept at RegsToPass
+ // vector
+ if (VA.isRegLoc()) {
+ RegsToPass.push_back(std::make_pair(VA.getLocReg(), Arg));
+ } else {
+ assert(VA.isMemLoc());
+
+ if (StackPtr.getNode() == 0)
+ StackPtr = DAG.getCopyFromReg(Chain, dl, Alpha::R30, MVT::i64);
+
+ SDValue PtrOff = DAG.getNode(ISD::ADD, dl, getPointerTy(),
+ StackPtr,
+ DAG.getIntPtrConstant(VA.getLocMemOffset()));
+
+ MemOpChains.push_back(DAG.getStore(Chain, dl, Arg, PtrOff,
+ PseudoSourceValue::getStack(), 0,
+ false, false, 0));
+ }
+ }
+
+ // Transform all store nodes into one single node because all store nodes are
+ // independent of each other.
+ if (!MemOpChains.empty())
+ Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
+ &MemOpChains[0], MemOpChains.size());
+
+ // Build a sequence of copy-to-reg nodes chained together with token chain and
+ // flag operands which copy the outgoing args into registers. The InFlag in
+ // necessary since all emited instructions must be stuck together.
+ SDValue InFlag;
+ for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i) {
+ Chain = DAG.getCopyToReg(Chain, dl, RegsToPass[i].first,
+ RegsToPass[i].second, InFlag);
+ InFlag = Chain.getValue(1);
+ }
+
+ // Returns a chain & a flag for retval copy to use.
+ SDVTList NodeTys = DAG.getVTList(MVT::Other, MVT::Flag);
+ SmallVector<SDValue, 8> Ops;
+ Ops.push_back(Chain);
+ Ops.push_back(Callee);
+
+ // Add argument registers to the end of the list so that they are
+ // known live into the call.
+ for (unsigned i = 0, e = RegsToPass.size(); i != e; ++i)
+ Ops.push_back(DAG.getRegister(RegsToPass[i].first,
+ RegsToPass[i].second.getValueType()));
+
+ if (InFlag.getNode())
+ Ops.push_back(InFlag);
+
+ Chain = DAG.getNode(AlphaISD::CALL, dl, NodeTys, &Ops[0], Ops.size());
+ InFlag = Chain.getValue(1);
+
+ // Create the CALLSEQ_END node.
+ Chain = DAG.getCALLSEQ_END(Chain,
+ DAG.getConstant(NumBytes, getPointerTy(), true),
+ DAG.getConstant(0, getPointerTy(), true),
+ InFlag);
+ InFlag = Chain.getValue(1);
+
+ // Handle result values, copying them out of physregs into vregs that we
+ // return.
+ return LowerCallResult(Chain, InFlag, CallConv, isVarArg,
+ Ins, dl, DAG, InVals);
+}
+
+/// LowerCallResult - Lower the result values of a call into the
+/// appropriate copies out of appropriate physical registers.
+///
+SDValue
+AlphaTargetLowering::LowerCallResult(SDValue Chain, SDValue InFlag,
+ CallingConv::ID CallConv, bool isVarArg,
+ const SmallVectorImpl<ISD::InputArg> &Ins,
+ DebugLoc dl, SelectionDAG &DAG,
+ SmallVectorImpl<SDValue> &InVals) const {
+
+ // Assign locations to each value returned by this call.
+ SmallVector<CCValAssign, 16> RVLocs;
+ CCState CCInfo(CallConv, isVarArg, getTargetMachine(), RVLocs,
+ *DAG.getContext());
+
+ CCInfo.AnalyzeCallResult(Ins, RetCC_Alpha);
+
+ // Copy all of the result registers out of their specified physreg.
+ for (unsigned i = 0; i != RVLocs.size(); ++i) {
+ CCValAssign &VA = RVLocs[i];
+
+ Chain = DAG.getCopyFromReg(Chain, dl, VA.getLocReg(),
+ VA.getLocVT(), InFlag).getValue(1);
+ SDValue RetValue = Chain.getValue(0);
+ InFlag = Chain.getValue(2);
+
+ // If this is an 8/16/32-bit value, it is really passed promoted to 64
+ // bits. Insert an assert[sz]ext to capture this, then truncate to the
+ // right size.
+ if (VA.getLocInfo() == CCValAssign::SExt)
+ RetValue = DAG.getNode(ISD::AssertSext, dl, VA.getLocVT(), RetValue,
+ DAG.getValueType(VA.getValVT()));
+ else if (VA.getLocInfo() == CCValAssign::ZExt)
+ RetValue = DAG.getNode(ISD::AssertZext, dl, VA.getLocVT(), RetValue,
+ DAG.getValueType(VA.getValVT()));
+
+ if (VA.getLocInfo() != CCValAssign::Full)
+ RetValue = DAG.getNode(ISD::TRUNCATE, dl, VA.getValVT(), RetValue);
+
+ InVals.push_back(RetValue);
+ }
+
+ return Chain;
+}
+
+SDValue
+AlphaTargetLowering::LowerFormalArguments(SDValue Chain,
+ CallingConv::ID CallConv, bool isVarArg,
+ const SmallVectorImpl<ISD::InputArg>
+ &Ins,
+ DebugLoc dl, SelectionDAG &DAG,
+ SmallVectorImpl<SDValue> &InVals)
+ const {
+
MachineFunction &MF = DAG.getMachineFunction();
MachineFrameInfo *MFI = MF.getFrameInfo();
- std::vector<SDValue> ArgValues;
- SDValue Root = Op.getOperand(0);
- DebugLoc dl = Op.getDebugLoc();
-
- AddLiveIn(MF, Alpha::R29, &Alpha::GPRCRegClass); //GP
- AddLiveIn(MF, Alpha::R26, &Alpha::GPRCRegClass); //RA
+ AlphaMachineFunctionInfo *FuncInfo = MF.getInfo<AlphaMachineFunctionInfo>();
unsigned args_int[] = {
Alpha::R16, Alpha::R17, Alpha::R18, Alpha::R19, Alpha::R20, Alpha::R21};
unsigned args_float[] = {
Alpha::F16, Alpha::F17, Alpha::F18, Alpha::F19, Alpha::F20, Alpha::F21};
-
- for (unsigned ArgNo = 0, e = Op.getNode()->getNumValues()-1; ArgNo != e; ++ArgNo) {
+
+ for (unsigned ArgNo = 0, e = Ins.size(); ArgNo != e; ++ArgNo) {
SDValue argt;
- MVT ObjectVT = Op.getValue(ArgNo).getValueType();
+ EVT ObjectVT = Ins[ArgNo].VT;
SDValue ArgVal;
if (ArgNo < 6) {
- switch (ObjectVT.getSimpleVT()) {
+ switch (ObjectVT.getSimpleVT().SimpleTy) {
default:
assert(false && "Invalid value type!");
case MVT::f64:
- args_float[ArgNo] = AddLiveIn(MF, args_float[ArgNo],
+ args_float[ArgNo] = AddLiveIn(MF, args_float[ArgNo],
&Alpha::F8RCRegClass);
- ArgVal = DAG.getCopyFromReg(Root, dl, args_float[ArgNo], ObjectVT);
+ ArgVal = DAG.getCopyFromReg(Chain, dl, args_float[ArgNo], ObjectVT);
break;
case MVT::f32:
- args_float[ArgNo] = AddLiveIn(MF, args_float[ArgNo],
+ args_float[ArgNo] = AddLiveIn(MF, args_float[ArgNo],
&Alpha::F4RCRegClass);
- ArgVal = DAG.getCopyFromReg(Root, dl, args_float[ArgNo], ObjectVT);
+ ArgVal = DAG.getCopyFromReg(Chain, dl, args_float[ArgNo], ObjectVT);
break;
case MVT::i64:
- args_int[ArgNo] = AddLiveIn(MF, args_int[ArgNo],
+ args_int[ArgNo] = AddLiveIn(MF, args_int[ArgNo],
&Alpha::GPRCRegClass);
- ArgVal = DAG.getCopyFromReg(Root, dl, args_int[ArgNo], MVT::i64);
+ ArgVal = DAG.getCopyFromReg(Chain, dl, args_int[ArgNo], MVT::i64);
break;
}
} else { //more args
// Create the frame index object for this incoming parameter...
- int FI = MFI->CreateFixedObject(8, 8 * (ArgNo - 6));
+ int FI = MFI->CreateFixedObject(8, 8 * (ArgNo - 6), true);
// Create the SelectionDAG nodes corresponding to a load
//from this parameter
SDValue FIN = DAG.getFrameIndex(FI, MVT::i64);
- ArgVal = DAG.getLoad(ObjectVT, dl, Root, FIN, NULL, 0);
+ ArgVal = DAG.getLoad(ObjectVT, dl, Chain, FIN, NULL, 0,
+ false, false, 0);
}
- ArgValues.push_back(ArgVal);
+ InVals.push_back(ArgVal);
}
// If the functions takes variable number of arguments, copy all regs to stack
- bool isVarArg = cast<ConstantSDNode>(Op.getOperand(2))->getZExtValue() != 0;
if (isVarArg) {
- VarArgsOffset = (Op.getNode()->getNumValues()-1) * 8;
+ FuncInfo->setVarArgsOffset(Ins.size() * 8);
std::vector<SDValue> LS;
for (int i = 0; i < 6; ++i) {
if (TargetRegisterInfo::isPhysicalRegister(args_int[i]))
args_int[i] = AddLiveIn(MF, args_int[i], &Alpha::GPRCRegClass);
- SDValue argt = DAG.getCopyFromReg(Root, dl, args_int[i], MVT::i64);
- int FI = MFI->CreateFixedObject(8, -8 * (6 - i));
- if (i == 0) VarArgsBase = FI;
+ SDValue argt = DAG.getCopyFromReg(Chain, dl, args_int[i], MVT::i64);
+ int FI = MFI->CreateFixedObject(8, -8 * (6 - i), true);
+ if (i == 0) FuncInfo->setVarArgsBase(FI);
SDValue SDFI = DAG.getFrameIndex(FI, MVT::i64);
- LS.push_back(DAG.getStore(Root, dl, argt, SDFI, NULL, 0));
+ LS.push_back(DAG.getStore(Chain, dl, argt, SDFI, NULL, 0,
+ false, false, 0));
if (TargetRegisterInfo::isPhysicalRegister(args_float[i]))
args_float[i] = AddLiveIn(MF, args_float[i], &Alpha::F8RCRegClass);
- argt = DAG.getCopyFromReg(Root, dl, args_float[i], MVT::f64);
- FI = MFI->CreateFixedObject(8, - 8 * (12 - i));
+ argt = DAG.getCopyFromReg(Chain, dl, args_float[i], MVT::f64);
+ FI = MFI->CreateFixedObject(8, - 8 * (12 - i), true);
SDFI = DAG.getFrameIndex(FI, MVT::i64);
- LS.push_back(DAG.getStore(Root, dl, argt, SDFI, NULL, 0));
+ LS.push_back(DAG.getStore(Chain, dl, argt, SDFI, NULL, 0,
+ false, false, 0));
}
//Set up a token factor with all the stack traffic
- Root = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &LS[0], LS.size());
+ Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &LS[0], LS.size());
}
- ArgValues.push_back(Root);
-
- // Return the new list of results.
- return DAG.getNode(ISD::MERGE_VALUES, dl, Op.getNode()->getVTList(),
- &ArgValues[0], ArgValues.size());
+ return Chain;
}
-static SDValue LowerRET(SDValue Op, SelectionDAG &DAG) {
- DebugLoc dl = Op.getDebugLoc();
- SDValue Copy = DAG.getCopyToReg(Op.getOperand(0), dl, Alpha::R26,
- DAG.getNode(AlphaISD::GlobalRetAddr,
- DebugLoc::getUnknownLoc(),
- MVT::i64),
- SDValue());
- switch (Op.getNumOperands()) {
+SDValue
+AlphaTargetLowering::LowerReturn(SDValue Chain,
+ CallingConv::ID CallConv, bool isVarArg,
+ const SmallVectorImpl<ISD::OutputArg> &Outs,
+ DebugLoc dl, SelectionDAG &DAG) const {
+
+ SDValue Copy = DAG.getCopyToReg(Chain, dl, Alpha::R26,
+ DAG.getNode(AlphaISD::GlobalRetAddr,
+ DebugLoc(), MVT::i64),
+ SDValue());
+ switch (Outs.size()) {
default:
- assert(0 && "Do not know how to return this many arguments!");
- abort();
- case 1:
+ llvm_unreachable("Do not know how to return this many arguments!");
+ case 0:
break;
//return SDValue(); // ret void is legal
- case 3: {
- MVT ArgVT = Op.getOperand(1).getValueType();
+ case 1: {
+ EVT ArgVT = Outs[0].Val.getValueType();
unsigned ArgReg;
if (ArgVT.isInteger())
ArgReg = Alpha::R0;
assert(ArgVT.isFloatingPoint());
ArgReg = Alpha::F0;
}
- Copy = DAG.getCopyToReg(Copy, dl, ArgReg,
- Op.getOperand(1), Copy.getValue(1));
+ Copy = DAG.getCopyToReg(Copy, dl, ArgReg,
+ Outs[0].Val, Copy.getValue(1));
if (DAG.getMachineFunction().getRegInfo().liveout_empty())
DAG.getMachineFunction().getRegInfo().addLiveOut(ArgReg);
break;
}
- case 5: {
- MVT ArgVT = Op.getOperand(1).getValueType();
+ case 2: {
+ EVT ArgVT = Outs[0].Val.getValueType();
unsigned ArgReg1, ArgReg2;
if (ArgVT.isInteger()) {
ArgReg1 = Alpha::R0;
ArgReg1 = Alpha::F0;
ArgReg2 = Alpha::F1;
}
- Copy = DAG.getCopyToReg(Copy, dl, ArgReg1,
- Op.getOperand(1), Copy.getValue(1));
- if (std::find(DAG.getMachineFunction().getRegInfo().liveout_begin(),
+ Copy = DAG.getCopyToReg(Copy, dl, ArgReg1,
+ Outs[0].Val, Copy.getValue(1));
+ if (std::find(DAG.getMachineFunction().getRegInfo().liveout_begin(),
DAG.getMachineFunction().getRegInfo().liveout_end(), ArgReg1)
== DAG.getMachineFunction().getRegInfo().liveout_end())
DAG.getMachineFunction().getRegInfo().addLiveOut(ArgReg1);
- Copy = DAG.getCopyToReg(Copy, dl, ArgReg2,
- Op.getOperand(3), Copy.getValue(1));
- if (std::find(DAG.getMachineFunction().getRegInfo().liveout_begin(),
+ Copy = DAG.getCopyToReg(Copy, dl, ArgReg2,
+ Outs[1].Val, Copy.getValue(1));
+ if (std::find(DAG.getMachineFunction().getRegInfo().liveout_begin(),
DAG.getMachineFunction().getRegInfo().liveout_end(), ArgReg2)
== DAG.getMachineFunction().getRegInfo().liveout_end())
DAG.getMachineFunction().getRegInfo().addLiveOut(ArgReg2);
break;
}
}
- return DAG.getNode(AlphaISD::RET_FLAG, dl,
+ return DAG.getNode(AlphaISD::RET_FLAG, dl,
MVT::Other, Copy, Copy.getValue(1));
}
-std::pair<SDValue, SDValue>
-AlphaTargetLowering::LowerCallTo(SDValue Chain, const Type *RetTy,
- bool RetSExt, bool RetZExt, bool isVarArg,
- bool isInreg, unsigned CallingConv,
- bool isTailCall, SDValue Callee,
- ArgListTy &Args, SelectionDAG &DAG,
- DebugLoc dl) {
- int NumBytes = 0;
- if (Args.size() > 6)
- NumBytes = (Args.size() - 6) * 8;
-
- Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(NumBytes, true));
- std::vector<SDValue> args_to_use;
- for (unsigned i = 0, e = Args.size(); i != e; ++i)
- {
- switch (getValueType(Args[i].Ty).getSimpleVT()) {
- default: assert(0 && "Unexpected ValueType for argument!");
- case MVT::i1:
- case MVT::i8:
- case MVT::i16:
- case MVT::i32:
- // Promote the integer to 64 bits. If the input type is signed use a
- // sign extend, otherwise use a zero extend.
- if (Args[i].isSExt)
- Args[i].Node = DAG.getNode(ISD::SIGN_EXTEND, dl,
- MVT::i64, Args[i].Node);
- else if (Args[i].isZExt)
- Args[i].Node = DAG.getNode(ISD::ZERO_EXTEND, dl,
- MVT::i64, Args[i].Node);
- else
- Args[i].Node = DAG.getNode(ISD::ANY_EXTEND, dl, MVT::i64, Args[i].Node);
- break;
- case MVT::i64:
- case MVT::f64:
- case MVT::f32:
- break;
- }
- args_to_use.push_back(Args[i].Node);
- }
-
- std::vector<MVT> RetVals;
- MVT RetTyVT = getValueType(RetTy);
- MVT ActualRetTyVT = RetTyVT;
- if (RetTyVT.getSimpleVT() >= MVT::i1 && RetTyVT.getSimpleVT() <= MVT::i32)
- ActualRetTyVT = MVT::i64;
-
- if (RetTyVT != MVT::isVoid)
- RetVals.push_back(ActualRetTyVT);
- RetVals.push_back(MVT::Other);
-
- std::vector<SDValue> Ops;
- Ops.push_back(Chain);
- Ops.push_back(Callee);
- Ops.insert(Ops.end(), args_to_use.begin(), args_to_use.end());
- SDValue TheCall = DAG.getNode(AlphaISD::CALL, dl,
- RetVals, &Ops[0], Ops.size());
- Chain = TheCall.getValue(RetTyVT != MVT::isVoid);
- Chain = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(NumBytes, true),
- DAG.getIntPtrConstant(0, true), SDValue());
- SDValue RetVal = TheCall;
-
- if (RetTyVT != ActualRetTyVT) {
- ISD::NodeType AssertKind = ISD::DELETED_NODE;
- if (RetSExt)
- AssertKind = ISD::AssertSext;
- else if (RetZExt)
- AssertKind = ISD::AssertZext;
-
- if (AssertKind != ISD::DELETED_NODE)
- RetVal = DAG.getNode(AssertKind, dl, MVT::i64, RetVal,
- DAG.getValueType(RetTyVT));
-
- RetVal = DAG.getNode(ISD::TRUNCATE, dl, RetTyVT, RetVal);
- }
-
- return std::make_pair(RetVal, Chain);
-}
-
void AlphaTargetLowering::LowerVAARG(SDNode *N, SDValue &Chain,
- SDValue &DataPtr, SelectionDAG &DAG) {
+ SDValue &DataPtr,
+ SelectionDAG &DAG) const {
Chain = N->getOperand(0);
SDValue VAListP = N->getOperand(1);
const Value *VAListS = cast<SrcValueSDNode>(N->getOperand(2))->getValue();
DebugLoc dl = N->getDebugLoc();
- SDValue Base = DAG.getLoad(MVT::i64, dl, Chain, VAListP, VAListS, 0);
+ SDValue Base = DAG.getLoad(MVT::i64, dl, Chain, VAListP, VAListS, 0,
+ false, false, 0);
SDValue Tmp = DAG.getNode(ISD::ADD, dl, MVT::i64, VAListP,
DAG.getConstant(8, MVT::i64));
SDValue Offset = DAG.getExtLoad(ISD::SEXTLOAD, dl, MVT::i64, Base.getValue(1),
- Tmp, NULL, 0, MVT::i32);
+ Tmp, NULL, 0, MVT::i32, false, false, 0);
DataPtr = DAG.getNode(ISD::ADD, dl, MVT::i64, Base, Offset);
if (N->getValueType(0).isFloatingPoint())
{
SDValue NewOffset = DAG.getNode(ISD::ADD, dl, MVT::i64, Offset,
DAG.getConstant(8, MVT::i64));
Chain = DAG.getTruncStore(Offset.getValue(1), dl, NewOffset, Tmp, NULL, 0,
- MVT::i32);
+ MVT::i32, false, false, 0);
}
/// LowerOperation - Provide custom lowering hooks for some operations.
///
-SDValue AlphaTargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) {
- DebugLoc dl = Op.getNode()->getDebugLoc();
+SDValue AlphaTargetLowering::LowerOperation(SDValue Op,
+ SelectionDAG &DAG) const {
+ DebugLoc dl = Op.getDebugLoc();
switch (Op.getOpcode()) {
- default: assert(0 && "Wasn't expecting to be able to lower this!");
- case ISD::FORMAL_ARGUMENTS: return LowerFORMAL_ARGUMENTS(Op, DAG,
- VarArgsBase,
- VarArgsOffset);
-
- case ISD::RET: return LowerRET(Op,DAG);
+ default: llvm_unreachable("Wasn't expecting to be able to lower this!");
case ISD::JumpTable: return LowerJumpTable(Op, DAG);
case ISD::INTRINSIC_WO_CHAIN: {
switch (IntNo) {
default: break; // Don't custom lower most intrinsics.
case Intrinsic::alpha_umulh:
- return DAG.getNode(ISD::MULHU, dl, MVT::i64,
+ return DAG.getNode(ISD::MULHU, dl, MVT::i64,
Op.getOperand(1), Op.getOperand(2));
}
}
+ case ISD::SRL_PARTS: {
+ SDValue ShOpLo = Op.getOperand(0);
+ SDValue ShOpHi = Op.getOperand(1);
+ SDValue ShAmt = Op.getOperand(2);
+ SDValue bm = DAG.getNode(ISD::SUB, dl, MVT::i64,
+ DAG.getConstant(64, MVT::i64), ShAmt);
+ SDValue BMCC = DAG.getSetCC(dl, MVT::i64, bm,
+ DAG.getConstant(0, MVT::i64), ISD::SETLE);
+ // if 64 - shAmt <= 0
+ SDValue Hi_Neg = DAG.getConstant(0, MVT::i64);
+ SDValue ShAmt_Neg = DAG.getNode(ISD::SUB, dl, MVT::i64,
+ DAG.getConstant(0, MVT::i64), bm);
+ SDValue Lo_Neg = DAG.getNode(ISD::SRL, dl, MVT::i64, ShOpHi, ShAmt_Neg);
+ // else
+ SDValue carries = DAG.getNode(ISD::SHL, dl, MVT::i64, ShOpHi, bm);
+ SDValue Hi_Pos = DAG.getNode(ISD::SRL, dl, MVT::i64, ShOpHi, ShAmt);
+ SDValue Lo_Pos = DAG.getNode(ISD::SRL, dl, MVT::i64, ShOpLo, ShAmt);
+ Lo_Pos = DAG.getNode(ISD::OR, dl, MVT::i64, Lo_Pos, carries);
+ // Merge
+ SDValue Hi = DAG.getNode(ISD::SELECT, dl, MVT::i64, BMCC, Hi_Neg, Hi_Pos);
+ SDValue Lo = DAG.getNode(ISD::SELECT, dl, MVT::i64, BMCC, Lo_Neg, Lo_Pos);
+ SDValue Ops[2] = { Lo, Hi };
+ return DAG.getMergeValues(Ops, 2, dl);
+ }
+ // case ISD::SRA_PARTS:
+
+ // case ISD::SHL_PARTS:
+
+
case ISD::SINT_TO_FP: {
assert(Op.getOperand(0).getValueType() == MVT::i64 &&
"Unhandled SINT_TO_FP type in custom expander!");
if (!isDouble) //Promote
src = DAG.getNode(ISD::FP_EXTEND, dl, MVT::f64, src);
-
+
src = DAG.getNode(AlphaISD::CVTTQ_, dl, MVT::f64, src);
return DAG.getNode(ISD::BIT_CONVERT, dl, MVT::i64, src);
}
case ISD::ConstantPool: {
ConstantPoolSDNode *CP = cast<ConstantPoolSDNode>(Op);
- Constant *C = CP->getConstVal();
+ const Constant *C = CP->getConstVal();
SDValue CPI = DAG.getTargetConstantPool(C, MVT::i64, CP->getAlignment());
// FIXME there isn't really any debug info here
-
+
SDValue Hi = DAG.getNode(AlphaISD::GPRelHi, dl, MVT::i64, CPI,
DAG.getGLOBAL_OFFSET_TABLE(MVT::i64));
SDValue Lo = DAG.getNode(AlphaISD::GPRelLo, dl, MVT::i64, CPI, Hi);
return Lo;
}
case ISD::GlobalTLSAddress:
- assert(0 && "TLS not implemented for Alpha.");
+ llvm_unreachable("TLS not implemented for Alpha.");
case ISD::GlobalAddress: {
GlobalAddressSDNode *GSDN = cast<GlobalAddressSDNode>(Op);
- GlobalValue *GV = GSDN->getGlobal();
+ const GlobalValue *GV = GSDN->getGlobal();
SDValue GA = DAG.getTargetGlobalAddress(GV, MVT::i64, GSDN->getOffset());
// FIXME there isn't really any debug info here
SDValue Lo = DAG.getNode(AlphaISD::GPRelLo, dl, MVT::i64, GA, Hi);
return Lo;
} else
- return DAG.getNode(AlphaISD::RelLit, dl, MVT::i64, GA,
+ return DAG.getNode(AlphaISD::RelLit, dl, MVT::i64, GA,
DAG.getGLOBAL_OFFSET_TABLE(MVT::i64));
}
case ISD::ExternalSymbol: {
- return DAG.getNode(AlphaISD::RelLit, dl, MVT::i64,
+ return DAG.getNode(AlphaISD::RelLit, dl, MVT::i64,
DAG.getTargetExternalSymbol(cast<ExternalSymbolSDNode>(Op)
->getSymbol(), MVT::i64),
DAG.getGLOBAL_OFFSET_TABLE(MVT::i64));
case ISD::SREM:
//Expand only on constant case
if (Op.getOperand(1).getOpcode() == ISD::Constant) {
- MVT VT = Op.getNode()->getValueType(0);
+ EVT VT = Op.getNode()->getValueType(0);
SDValue Tmp1 = Op.getNode()->getOpcode() == ISD::UREM ?
BuildUDIV(Op.getNode(), DAG, NULL) :
BuildSDIV(Op.getNode(), DAG, NULL);
case ISD::UDIV:
if (Op.getValueType().isInteger()) {
if (Op.getOperand(1).getOpcode() == ISD::Constant)
- return Op.getOpcode() == ISD::SDIV ? BuildSDIV(Op.getNode(), DAG, NULL)
+ return Op.getOpcode() == ISD::SDIV ? BuildSDIV(Op.getNode(), DAG, NULL)
: BuildUDIV(Op.getNode(), DAG, NULL);
const char* opstr = 0;
switch (Op.getOpcode()) {
SDValue Result;
if (Op.getValueType() == MVT::i32)
Result = DAG.getExtLoad(ISD::SEXTLOAD, dl, MVT::i64, Chain, DataPtr,
- NULL, 0, MVT::i32);
+ NULL, 0, MVT::i32, false, false, 0);
else
- Result = DAG.getLoad(Op.getValueType(), dl, Chain, DataPtr, NULL, 0);
+ Result = DAG.getLoad(Op.getValueType(), dl, Chain, DataPtr, NULL, 0,
+ false, false, 0);
return Result;
}
case ISD::VACOPY: {
SDValue SrcP = Op.getOperand(2);
const Value *DestS = cast<SrcValueSDNode>(Op.getOperand(3))->getValue();
const Value *SrcS = cast<SrcValueSDNode>(Op.getOperand(4))->getValue();
-
- SDValue Val = DAG.getLoad(getPointerTy(), dl, Chain, SrcP, SrcS, 0);
- SDValue Result = DAG.getStore(Val.getValue(1), dl, Val, DestP, DestS, 0);
- SDValue NP = DAG.getNode(ISD::ADD, dl, MVT::i64, SrcP,
+
+ SDValue Val = DAG.getLoad(getPointerTy(), dl, Chain, SrcP, SrcS, 0,
+ false, false, 0);
+ SDValue Result = DAG.getStore(Val.getValue(1), dl, Val, DestP, DestS, 0,
+ false, false, 0);
+ SDValue NP = DAG.getNode(ISD::ADD, dl, MVT::i64, SrcP,
DAG.getConstant(8, MVT::i64));
- Val = DAG.getExtLoad(ISD::SEXTLOAD, dl, MVT::i64, Result,
- NP, NULL,0, MVT::i32);
+ Val = DAG.getExtLoad(ISD::SEXTLOAD, dl, MVT::i64, Result,
+ NP, NULL,0, MVT::i32, false, false, 0);
SDValue NPD = DAG.getNode(ISD::ADD, dl, MVT::i64, DestP,
DAG.getConstant(8, MVT::i64));
- return DAG.getTruncStore(Val.getValue(1), dl, Val, NPD, NULL, 0, MVT::i32);
+ return DAG.getTruncStore(Val.getValue(1), dl, Val, NPD, NULL, 0, MVT::i32,
+ false, false, 0);
}
case ISD::VASTART: {
+ MachineFunction &MF = DAG.getMachineFunction();
+ AlphaMachineFunctionInfo *FuncInfo = MF.getInfo<AlphaMachineFunctionInfo>();
+
SDValue Chain = Op.getOperand(0);
SDValue VAListP = Op.getOperand(1);
const Value *VAListS = cast<SrcValueSDNode>(Op.getOperand(2))->getValue();
-
+
// vastart stores the address of the VarArgsBase and VarArgsOffset
- SDValue FR = DAG.getFrameIndex(VarArgsBase, MVT::i64);
- SDValue S1 = DAG.getStore(Chain, dl, FR, VAListP, VAListS, 0);
+ SDValue FR = DAG.getFrameIndex(FuncInfo->getVarArgsBase(), MVT::i64);
+ SDValue S1 = DAG.getStore(Chain, dl, FR, VAListP, VAListS, 0,
+ false, false, 0);
SDValue SA2 = DAG.getNode(ISD::ADD, dl, MVT::i64, VAListP,
DAG.getConstant(8, MVT::i64));
- return DAG.getTruncStore(S1, dl, DAG.getConstant(VarArgsOffset, MVT::i64),
- SA2, NULL, 0, MVT::i32);
+ return DAG.getTruncStore(S1, dl,
+ DAG.getConstant(FuncInfo->getVarArgsOffset(),
+ MVT::i64),
+ SA2, NULL, 0, MVT::i32, false, false, 0);
}
- case ISD::RETURNADDR:
- return DAG.getNode(AlphaISD::GlobalRetAddr, DebugLoc::getUnknownLoc(),
- MVT::i64);
+ case ISD::RETURNADDR:
+ return DAG.getNode(AlphaISD::GlobalRetAddr, DebugLoc(), MVT::i64);
//FIXME: implement
case ISD::FRAMEADDR: break;
}
-
+
return SDValue();
}
void AlphaTargetLowering::ReplaceNodeResults(SDNode *N,
SmallVectorImpl<SDValue>&Results,
- SelectionDAG &DAG) {
+ SelectionDAG &DAG) const {
DebugLoc dl = N->getDebugLoc();
assert(N->getValueType(0) == MVT::i32 &&
N->getOpcode() == ISD::VAARG &&
SDValue Chain, DataPtr;
LowerVAARG(N, Chain, DataPtr, DAG);
- SDValue Res = DAG.getLoad(N->getValueType(0), dl, Chain, DataPtr, NULL, 0);
+ SDValue Res = DAG.getLoad(N->getValueType(0), dl, Chain, DataPtr, NULL, 0,
+ false, false, 0);
Results.push_back(Res);
Results.push_back(SDValue(Res.getNode(), 1));
}
/// getConstraintType - Given a constraint letter, return the type of
/// constraint it is for this target.
-AlphaTargetLowering::ConstraintType
+AlphaTargetLowering::ConstraintType
AlphaTargetLowering::getConstraintType(const std::string &Constraint) const {
if (Constraint.size() == 1) {
switch (Constraint[0]) {
std::vector<unsigned> AlphaTargetLowering::
getRegClassForInlineAsmConstraint(const std::string &Constraint,
- MVT VT) const {
+ EVT VT) const {
if (Constraint.size() == 1) {
switch (Constraint[0]) {
default: break; // Unknown constriant letter
- case 'f':
+ case 'f':
return make_vector<unsigned>(Alpha::F0 , Alpha::F1 , Alpha::F2 ,
Alpha::F3 , Alpha::F4 , Alpha::F5 ,
- Alpha::F6 , Alpha::F7 , Alpha::F8 ,
- Alpha::F9 , Alpha::F10, Alpha::F11,
- Alpha::F12, Alpha::F13, Alpha::F14,
- Alpha::F15, Alpha::F16, Alpha::F17,
- Alpha::F18, Alpha::F19, Alpha::F20,
- Alpha::F21, Alpha::F22, Alpha::F23,
- Alpha::F24, Alpha::F25, Alpha::F26,
- Alpha::F27, Alpha::F28, Alpha::F29,
+ Alpha::F6 , Alpha::F7 , Alpha::F8 ,
+ Alpha::F9 , Alpha::F10, Alpha::F11,
+ Alpha::F12, Alpha::F13, Alpha::F14,
+ Alpha::F15, Alpha::F16, Alpha::F17,
+ Alpha::F18, Alpha::F19, Alpha::F20,
+ Alpha::F21, Alpha::F22, Alpha::F23,
+ Alpha::F24, Alpha::F25, Alpha::F26,
+ Alpha::F27, Alpha::F28, Alpha::F29,
Alpha::F30, Alpha::F31, 0);
- case 'r':
- return make_vector<unsigned>(Alpha::R0 , Alpha::R1 , Alpha::R2 ,
- Alpha::R3 , Alpha::R4 , Alpha::R5 ,
- Alpha::R6 , Alpha::R7 , Alpha::R8 ,
- Alpha::R9 , Alpha::R10, Alpha::R11,
- Alpha::R12, Alpha::R13, Alpha::R14,
- Alpha::R15, Alpha::R16, Alpha::R17,
- Alpha::R18, Alpha::R19, Alpha::R20,
- Alpha::R21, Alpha::R22, Alpha::R23,
- Alpha::R24, Alpha::R25, Alpha::R26,
- Alpha::R27, Alpha::R28, Alpha::R29,
+ case 'r':
+ return make_vector<unsigned>(Alpha::R0 , Alpha::R1 , Alpha::R2 ,
+ Alpha::R3 , Alpha::R4 , Alpha::R5 ,
+ Alpha::R6 , Alpha::R7 , Alpha::R8 ,
+ Alpha::R9 , Alpha::R10, Alpha::R11,
+ Alpha::R12, Alpha::R13, Alpha::R14,
+ Alpha::R15, Alpha::R16, Alpha::R17,
+ Alpha::R18, Alpha::R19, Alpha::R20,
+ Alpha::R21, Alpha::R22, Alpha::R23,
+ Alpha::R24, Alpha::R25, Alpha::R26,
+ Alpha::R27, Alpha::R28, Alpha::R29,
Alpha::R30, Alpha::R31, 0);
}
}
-
+
return std::vector<unsigned>();
}
//===----------------------------------------------------------------------===//
MachineBasicBlock *
AlphaTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
- MachineBasicBlock *BB) {
+ MachineBasicBlock *BB) const {
const TargetInstrInfo *TII = getTargetMachine().getInstrInfo();
assert((MI->getOpcode() == Alpha::CAS32 ||
MI->getOpcode() == Alpha::CAS64 ||
MI->getOpcode() == Alpha::SWAP64) &&
"Unexpected instr type to insert");
- bool is32 = MI->getOpcode() == Alpha::CAS32 ||
+ bool is32 = MI->getOpcode() == Alpha::CAS32 ||
MI->getOpcode() == Alpha::LAS32 ||
MI->getOpcode() == Alpha::SWAP32;
-
+
//Load locked store conditional for atomic ops take on the same form
//start:
//ll
//test sc and maybe branck to start
//exit:
const BasicBlock *LLVM_BB = BB->getBasicBlock();
+ DebugLoc dl = MI->getDebugLoc();
MachineFunction::iterator It = BB;
++It;
-
+
MachineBasicBlock *thisMBB = BB;
MachineFunction *F = BB->getParent();
MachineBasicBlock *llscMBB = F->CreateMachineBasicBlock(LLVM_BB);
F->insert(It, llscMBB);
F->insert(It, sinkMBB);
- BuildMI(thisMBB, TII->get(Alpha::BR)).addMBB(llscMBB);
-
+ BuildMI(thisMBB, dl, TII->get(Alpha::BR)).addMBB(llscMBB);
+
unsigned reg_res = MI->getOperand(0).getReg(),
reg_ptr = MI->getOperand(1).getReg(),
reg_v2 = MI->getOperand(2).getReg(),
reg_store = F->getRegInfo().createVirtualRegister(&Alpha::GPRCRegClass);
- BuildMI(llscMBB, TII->get(is32 ? Alpha::LDL_L : Alpha::LDQ_L),
+ BuildMI(llscMBB, dl, TII->get(is32 ? Alpha::LDL_L : Alpha::LDQ_L),
reg_res).addImm(0).addReg(reg_ptr);
switch (MI->getOpcode()) {
case Alpha::CAS32:
case Alpha::CAS64: {
- unsigned reg_cmp
+ unsigned reg_cmp
= F->getRegInfo().createVirtualRegister(&Alpha::GPRCRegClass);
- BuildMI(llscMBB, TII->get(Alpha::CMPEQ), reg_cmp)
+ BuildMI(llscMBB, dl, TII->get(Alpha::CMPEQ), reg_cmp)
.addReg(reg_v2).addReg(reg_res);
- BuildMI(llscMBB, TII->get(Alpha::BEQ))
+ BuildMI(llscMBB, dl, TII->get(Alpha::BEQ))
.addImm(0).addReg(reg_cmp).addMBB(sinkMBB);
- BuildMI(llscMBB, TII->get(Alpha::BISr), reg_store)
+ BuildMI(llscMBB, dl, TII->get(Alpha::BISr), reg_store)
.addReg(Alpha::R31).addReg(MI->getOperand(3).getReg());
break;
}
case Alpha::LAS32:
case Alpha::LAS64: {
- BuildMI(llscMBB, TII->get(is32 ? Alpha::ADDLr : Alpha::ADDQr), reg_store)
+ BuildMI(llscMBB, dl,TII->get(is32 ? Alpha::ADDLr : Alpha::ADDQr), reg_store)
.addReg(reg_res).addReg(reg_v2);
break;
}
case Alpha::SWAP32:
case Alpha::SWAP64: {
- BuildMI(llscMBB, TII->get(Alpha::BISr), reg_store)
+ BuildMI(llscMBB, dl, TII->get(Alpha::BISr), reg_store)
.addReg(reg_v2).addReg(reg_v2);
break;
}
}
- BuildMI(llscMBB, TII->get(is32 ? Alpha::STL_C : Alpha::STQ_C), reg_store)
+ BuildMI(llscMBB, dl, TII->get(is32 ? Alpha::STL_C : Alpha::STQ_C), reg_store)
.addReg(reg_store).addImm(0).addReg(reg_ptr);
- BuildMI(llscMBB, TII->get(Alpha::BEQ))
+ BuildMI(llscMBB, dl, TII->get(Alpha::BEQ))
.addImm(0).addReg(reg_store).addMBB(llscMBB);
- BuildMI(llscMBB, TII->get(Alpha::BR)).addMBB(sinkMBB);
+ BuildMI(llscMBB, dl, TII->get(Alpha::BR)).addMBB(sinkMBB);
thisMBB->addSuccessor(llscMBB);
llscMBB->addSuccessor(llscMBB);
// The Alpha target isn't yet aware of offsets.
return false;
}
+
+bool AlphaTargetLowering::isFPImmLegal(const APFloat &Imm, EVT VT) const {
+ if (VT != MVT::f32 && VT != MVT::f64)
+ return false;
+ // +0.0 F31
+ // +0.0f F31
+ // -0.0 -F31
+ // -0.0f -F31
+ return Imm.isZero() || Imm.isNegZero();
+}
projects / oota-llvm.git / blobdiff