#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineJumpTableInfo.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/DwarfWriter.h"
#include "llvm/Analysis/DebugInfo.h"
#include "llvm/CodeGen/PseudoSourceValue.h"
#include "llvm/Target/TargetFrameInfo.h"
#include "llvm/Target/TargetLowering.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Target/TargetSubtarget.h"
#include "llvm/CallingConv.h"
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Function.h"
#include "llvm/GlobalVariable.h"
#include "llvm/LLVMContext.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/SmallPtrSet.h"
#include <map>
using namespace llvm;
namespace {
class SelectionDAGLegalize {
TargetLowering &TLI;
SelectionDAG &DAG;
CodeGenOpt::Level OptLevel;
SDValue LastCALLSEQ_END;
bool IsLegalizingCall;
enum LegalizeAction {
Legal, Promote, Expand };
TargetLowering::ValueTypeActionImpl ValueTypeActions;
DenseMap<SDValue, SDValue> LegalizedNodes;
void AddLegalizedOperand(SDValue From, SDValue To) {
LegalizedNodes.insert(std::make_pair(From, To));
if (From != To)
LegalizedNodes.insert(std::make_pair(To, To));
}
public:
SelectionDAGLegalize(SelectionDAG &DAG, CodeGenOpt::Level ol);
LegalizeAction getTypeAction(EVT VT) const {
return
(LegalizeAction)ValueTypeActions.getTypeAction(*DAG.getContext(), VT);
}
bool isTypeLegal(EVT VT) const {
return getTypeAction(VT) == Legal;
}
void LegalizeDAG();
private:
SDValue LegalizeOp(SDValue O);
SDValue OptimizeFloatStore(StoreSDNode *ST);
SDValue PerformInsertVectorEltInMemory(SDValue Vec, SDValue Val,
SDValue Idx, DebugLoc dl);
SDValue ExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val,
SDValue Idx, DebugLoc dl);
SDValue ShuffleWithNarrowerEltType(EVT NVT, EVT VT, DebugLoc dl,
SDValue N1, SDValue N2,
SmallVectorImpl<int> &Mask) const;
bool LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest,
SmallPtrSet<SDNode*, 32> &NodesLeadingTo);
void LegalizeSetCCCondCode(EVT VT, SDValue &LHS, SDValue &RHS, SDValue &CC,
DebugLoc dl);
SDValue ExpandLibCall(RTLIB::Libcall LC, SDNode *Node, bool isSigned);
SDValue ExpandFPLibCall(SDNode *Node, RTLIB::Libcall Call_F32,
RTLIB::Libcall Call_F64, RTLIB::Libcall Call_F80,
RTLIB::Libcall Call_PPCF128);
SDValue ExpandIntLibCall(SDNode *Node, bool isSigned,
RTLIB::Libcall Call_I8,
RTLIB::Libcall Call_I16,
RTLIB::Libcall Call_I32,
RTLIB::Libcall Call_I64,
RTLIB::Libcall Call_I128);
SDValue EmitStackConvert(SDValue SrcOp, EVT SlotVT, EVT DestVT, DebugLoc dl);
SDValue ExpandBUILD_VECTOR(SDNode *Node);
SDValue ExpandSCALAR_TO_VECTOR(SDNode *Node);
void ExpandDYNAMIC_STACKALLOC(SDNode *Node,
SmallVectorImpl<SDValue> &Results);
SDValue ExpandFCOPYSIGN(SDNode *Node);
SDValue ExpandLegalINT_TO_FP(bool isSigned, SDValue LegalOp, EVT DestVT,
DebugLoc dl);
SDValue PromoteLegalINT_TO_FP(SDValue LegalOp, EVT DestVT, bool isSigned,
DebugLoc dl);
SDValue PromoteLegalFP_TO_INT(SDValue LegalOp, EVT DestVT, bool isSigned,
DebugLoc dl);
SDValue ExpandBSWAP(SDValue Op, DebugLoc dl);
SDValue ExpandBitCount(unsigned Opc, SDValue Op, DebugLoc dl);
SDValue ExpandExtractFromVectorThroughStack(SDValue Op);
SDValue ExpandVectorBuildThroughStack(SDNode* Node);
void ExpandNode(SDNode *Node, SmallVectorImpl<SDValue> &Results);
void PromoteNode(SDNode *Node, SmallVectorImpl<SDValue> &Results);
};
}
SDValue
SelectionDAGLegalize::ShuffleWithNarrowerEltType(EVT NVT, EVT VT, DebugLoc dl,
SDValue N1, SDValue N2,
SmallVectorImpl<int> &Mask) const {
unsigned NumMaskElts = VT.getVectorNumElements();
unsigned NumDestElts = NVT.getVectorNumElements();
unsigned NumEltsGrowth = NumDestElts / NumMaskElts;
assert(NumEltsGrowth && "Cannot promote to vector type with fewer elts!");
if (NumEltsGrowth == 1)
return DAG.getVectorShuffle(NVT, dl, N1, N2, &Mask[0]);
SmallVector<int, 8> NewMask;
for (unsigned i = 0; i != NumMaskElts; ++i) {
int Idx = Mask[i];
for (unsigned j = 0; j != NumEltsGrowth; ++j) {
if (Idx < 0)
NewMask.push_back(-1);
else
NewMask.push_back(Idx * NumEltsGrowth + j);
}
}
assert(NewMask.size() == NumDestElts && "Non-integer NumEltsGrowth?");
assert(TLI.isShuffleMaskLegal(NewMask, NVT) && "Shuffle not legal?");
return DAG.getVectorShuffle(NVT, dl, N1, N2, &NewMask[0]);
}
SelectionDAGLegalize::SelectionDAGLegalize(SelectionDAG &dag,
CodeGenOpt::Level ol)
: TLI(dag.getTargetLoweringInfo()), DAG(dag), OptLevel(ol),
ValueTypeActions(TLI.getValueTypeActions()) {
assert(MVT::LAST_VALUETYPE <= MVT::MAX_ALLOWED_VALUETYPE &&
"Too many value types for ValueTypeActions to hold!");
}
void SelectionDAGLegalize::LegalizeDAG() {
LastCALLSEQ_END = DAG.getEntryNode();
IsLegalizingCall = false;
DAG.AssignTopologicalOrder();
for (SelectionDAG::allnodes_iterator I = DAG.allnodes_begin(),
E = prior(DAG.allnodes_end()); I != llvm::next(E); ++I)
LegalizeOp(SDValue(I, 0));
SDValue OldRoot = DAG.getRoot();
assert(LegalizedNodes.count(OldRoot) && "Root didn't get legalized?");
DAG.setRoot(LegalizedNodes[OldRoot]);
LegalizedNodes.clear();
DAG.RemoveDeadNodes();
}
static SDNode *FindCallEndFromCallStart(SDNode *Node) {
if (Node->getOpcode() == ISD::CALLSEQ_END)
return Node;
if (Node->use_empty())
return 0;
SDValue TheChain(Node, Node->getNumValues()-1);
if (TheChain.getValueType() != MVT::Other) {
TheChain = SDValue(Node, 0);
if (TheChain.getValueType() != MVT::Other) {
for (unsigned i = 1, e = Node->getNumValues(); i != e; ++i)
if (Node->getValueType(i) == MVT::Other) {
TheChain = SDValue(Node, i);
break;
}
if (TheChain.getValueType() != MVT::Other)
return 0;
}
}
for (SDNode::use_iterator UI = Node->use_begin(),
E = Node->use_end(); UI != E; ++UI) {
SDNode *User = *UI;
for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i)
if (User->getOperand(i) == TheChain)
if (SDNode *Result = FindCallEndFromCallStart(User))
return Result;
}
return 0;
}
static SDNode *FindCallStartFromCallEnd(SDNode *Node) {
assert(Node && "Didn't find callseq_start for a call??");
if (Node->getOpcode() == ISD::CALLSEQ_START) return Node;
assert(Node->getOperand(0).getValueType() == MVT::Other &&
"Node doesn't have a token chain argument!");
return FindCallStartFromCallEnd(Node->getOperand(0).getNode());
}
bool SelectionDAGLegalize::LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest,
SmallPtrSet<SDNode*, 32> &NodesLeadingTo) {
if (N == Dest) return true;
if (NodesLeadingTo.count(N)) return true;
if (LegalizedNodes.count(SDValue(N, 0))) return false;
bool OperandsLeadToDest = false;
for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i)
OperandsLeadToDest |= LegalizeAllNodesNotLeadingTo(N->getOperand(i).getNode(), Dest, NodesLeadingTo);
if (OperandsLeadToDest) {
NodesLeadingTo.insert(N);
return true;
}
LegalizeOp(SDValue(N, 0));
return false;
}
static SDValue ExpandConstantFP(ConstantFPSDNode *CFP, bool UseCP,
SelectionDAG &DAG, const TargetLowering &TLI) {
bool Extend = false;
DebugLoc dl = CFP->getDebugLoc();
EVT VT = CFP->getValueType(0);
ConstantFP *LLVMC = const_cast<ConstantFP*>(CFP->getConstantFPValue());
if (!UseCP) {
assert((VT == MVT::f64 || VT == MVT::f32) && "Invalid type expansion");
return DAG.getConstant(LLVMC->getValueAPF().bitcastToAPInt(),
(VT == MVT::f64) ? MVT::i64 : MVT::i32);
}
EVT OrigVT = VT;
EVT SVT = VT;
while (SVT != MVT::f32) {
SVT = (MVT::SimpleValueType)(SVT.getSimpleVT().SimpleTy - 1);
if (CFP->isValueValidForType(SVT, CFP->getValueAPF()) &&
TLI.isLoadExtLegal(ISD::EXTLOAD, SVT) &&
TLI.ShouldShrinkFPConstant(OrigVT)) {
const Type *SType = SVT.getTypeForEVT(*DAG.getContext());
LLVMC = cast<ConstantFP>(ConstantExpr::getFPTrunc(LLVMC, SType));
VT = SVT;
Extend = true;
}
}
SDValue CPIdx = DAG.getConstantPool(LLVMC, TLI.getPointerTy());
unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment();
if (Extend)
return DAG.getExtLoad(ISD::EXTLOAD, dl,
OrigVT, DAG.getEntryNode(),
CPIdx, PseudoSourceValue::getConstantPool(),
0, VT, false, false, Alignment);
return DAG.getLoad(OrigVT, dl, DAG.getEntryNode(), CPIdx,
PseudoSourceValue::getConstantPool(), 0, false, false,
Alignment);
}
static
SDValue ExpandUnalignedStore(StoreSDNode *ST, SelectionDAG &DAG,
const TargetLowering &TLI) {
SDValue Chain = ST->getChain();
SDValue Ptr = ST->getBasePtr();
SDValue Val = ST->getValue();
EVT VT = Val.getValueType();
int Alignment = ST->getAlignment();
int SVOffset = ST->getSrcValueOffset();
DebugLoc dl = ST->getDebugLoc();
if (ST->getMemoryVT().isFloatingPoint() ||
ST->getMemoryVT().isVector()) {
EVT intVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits());
if (TLI.isTypeLegal(intVT)) {
SDValue Result = DAG.getNode(ISD::BIT_CONVERT, dl, intVT, Val);
return DAG.getStore(Chain, dl, Result, Ptr, ST->getSrcValue(),
SVOffset, ST->isVolatile(), ST->isNonTemporal(),
Alignment);
} else {
EVT StoredVT = ST->getMemoryVT();
EVT RegVT =
TLI.getRegisterType(*DAG.getContext(),
EVT::getIntegerVT(*DAG.getContext(),
StoredVT.getSizeInBits()));
unsigned StoredBytes = StoredVT.getSizeInBits() / 8;
unsigned RegBytes = RegVT.getSizeInBits() / 8;
unsigned NumRegs = (StoredBytes + RegBytes - 1) / RegBytes;
SDValue StackPtr = DAG.CreateStackTemporary(StoredVT, RegVT);
SDValue Store = DAG.getTruncStore(Chain, dl,
Val, StackPtr, NULL, 0, StoredVT,
false, false, 0);
SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy());
SmallVector<SDValue, 8> Stores;
unsigned Offset = 0;
for (unsigned i = 1; i < NumRegs; i++) {
SDValue Load = DAG.getLoad(RegVT, dl, Store, StackPtr, NULL, 0,
false, false, 0);
Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, Ptr,
ST->getSrcValue(), SVOffset + Offset,
ST->isVolatile(), ST->isNonTemporal(),
MinAlign(ST->getAlignment(), Offset)));
Offset += RegBytes;
StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr,
Increment);
Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment);
}
EVT MemVT = EVT::getIntegerVT(*DAG.getContext(),
8 * (StoredBytes - Offset));
SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, dl, RegVT, Store, StackPtr,
NULL, 0, MemVT, false, false, 0);
Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, Ptr,
ST->getSrcValue(), SVOffset + Offset,
MemVT, ST->isVolatile(),
ST->isNonTemporal(),
MinAlign(ST->getAlignment(), Offset)));
return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0],
Stores.size());
}
}
assert(ST->getMemoryVT().isInteger() &&
!ST->getMemoryVT().isVector() &&
"Unaligned store of unknown type.");
EVT NewStoredVT = ST->getMemoryVT().getHalfSizedIntegerVT(*DAG.getContext());
int NumBits = NewStoredVT.getSizeInBits();
int IncrementSize = NumBits / 8;
SDValue ShiftAmount = DAG.getConstant(NumBits, TLI.getShiftAmountTy());
SDValue Lo = Val;
SDValue Hi = DAG.getNode(ISD::SRL, dl, VT, Val, ShiftAmount);
SDValue Store1, Store2;
Store1 = DAG.getTruncStore(Chain, dl, TLI.isLittleEndian()?Lo:Hi, Ptr,
ST->getSrcValue(), SVOffset, NewStoredVT,
ST->isVolatile(), ST->isNonTemporal(), Alignment);
Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr,
DAG.getConstant(IncrementSize, TLI.getPointerTy()));
Alignment = MinAlign(Alignment, IncrementSize);
Store2 = DAG.getTruncStore(Chain, dl, TLI.isLittleEndian()?Hi:Lo, Ptr,
ST->getSrcValue(), SVOffset + IncrementSize,
NewStoredVT, ST->isVolatile(), ST->isNonTemporal(),
Alignment);
return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Store1, Store2);
}
static
SDValue ExpandUnalignedLoad(LoadSDNode *LD, SelectionDAG &DAG,
const TargetLowering &TLI) {
int SVOffset = LD->getSrcValueOffset();
SDValue Chain = LD->getChain();
SDValue Ptr = LD->getBasePtr();
EVT VT = LD->getValueType(0);
EVT LoadedVT = LD->getMemoryVT();
DebugLoc dl = LD->getDebugLoc();
if (VT.isFloatingPoint() || VT.isVector()) {
EVT intVT = EVT::getIntegerVT(*DAG.getContext(), LoadedVT.getSizeInBits());
if (TLI.isTypeLegal(intVT)) {
SDValue newLoad = DAG.getLoad(intVT, dl, Chain, Ptr, LD->getSrcValue(),
SVOffset, LD->isVolatile(),
LD->isNonTemporal(), LD->getAlignment());
SDValue Result = DAG.getNode(ISD::BIT_CONVERT, dl, LoadedVT, newLoad);
if (VT.isFloatingPoint() && LoadedVT != VT)
Result = DAG.getNode(ISD::FP_EXTEND, dl, VT, Result);
SDValue Ops[] = { Result, Chain };
return DAG.getMergeValues(Ops, 2, dl);
} else {
EVT RegVT = TLI.getRegisterType(*DAG.getContext(), intVT);
unsigned LoadedBytes = LoadedVT.getSizeInBits() / 8;
unsigned RegBytes = RegVT.getSizeInBits() / 8;
unsigned NumRegs = (LoadedBytes + RegBytes - 1) / RegBytes;
SDValue StackBase = DAG.CreateStackTemporary(LoadedVT, RegVT);
SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy());
SmallVector<SDValue, 8> Stores;
SDValue StackPtr = StackBase;
unsigned Offset = 0;
for (unsigned i = 1; i < NumRegs; i++) {
SDValue Load = DAG.getLoad(RegVT, dl, Chain, Ptr, LD->getSrcValue(),
SVOffset + Offset, LD->isVolatile(),
LD->isNonTemporal(),
MinAlign(LD->getAlignment(), Offset));
Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, StackPtr,
NULL, 0, false, false, 0));
Offset += RegBytes;
Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment);
StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr,
Increment);
}
EVT MemVT = EVT::getIntegerVT(*DAG.getContext(),
8 * (LoadedBytes - Offset));
SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, dl, RegVT, Chain, Ptr,
LD->getSrcValue(), SVOffset + Offset,
MemVT, LD->isVolatile(),
LD->isNonTemporal(),
MinAlign(LD->getAlignment(), Offset));
Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, StackPtr,
NULL, 0, MemVT, false, false, 0));
SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0],
Stores.size());
Load = DAG.getExtLoad(LD->getExtensionType(), dl, VT, TF, StackBase,
NULL, 0, LoadedVT, false, false, 0);
SDValue Ops[] = { Load, TF };
return DAG.getMergeValues(Ops, 2, dl);
}
}
assert(LoadedVT.isInteger() && !LoadedVT.isVector() &&
"Unaligned load of unsupported type.");
unsigned NumBits = LoadedVT.getSizeInBits();
EVT NewLoadedVT;
NewLoadedVT = EVT::getIntegerVT(*DAG.getContext(), NumBits/2);
NumBits >>= 1;
unsigned Alignment = LD->getAlignment();
unsigned IncrementSize = NumBits / 8;
ISD::LoadExtType HiExtType = LD->getExtensionType();
if (HiExtType == ISD::NON_EXTLOAD)
HiExtType = ISD::ZEXTLOAD;
SDValue Lo, Hi;
if (TLI.isLittleEndian()) {
Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, VT, Chain, Ptr, LD->getSrcValue(),
SVOffset, NewLoadedVT, LD->isVolatile(),
LD->isNonTemporal(), Alignment);
Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr,
DAG.getConstant(IncrementSize, TLI.getPointerTy()));
Hi = DAG.getExtLoad(HiExtType, dl, VT, Chain, Ptr, LD->getSrcValue(),
SVOffset + IncrementSize, NewLoadedVT, LD->isVolatile(),
LD->isNonTemporal(), MinAlign(Alignment, IncrementSize));
} else {
Hi = DAG.getExtLoad(HiExtType, dl, VT, Chain, Ptr, LD->getSrcValue(),
SVOffset, NewLoadedVT, LD->isVolatile(),
LD->isNonTemporal(), Alignment);
Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr,
DAG.getConstant(IncrementSize, TLI.getPointerTy()));
Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, VT, Chain, Ptr, LD->getSrcValue(),
SVOffset + IncrementSize, NewLoadedVT, LD->isVolatile(),
LD->isNonTemporal(), MinAlign(Alignment, IncrementSize));
}
SDValue ShiftAmount = DAG.getConstant(NumBits, TLI.getShiftAmountTy());
SDValue Result = DAG.getNode(ISD::SHL, dl, VT, Hi, ShiftAmount);
Result = DAG.getNode(ISD::OR, dl, VT, Result, Lo);
SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1),
Hi.getValue(1));
SDValue Ops[] = { Result, TF };
return DAG.getMergeValues(Ops, 2, dl);
}
SDValue SelectionDAGLegalize::
PerformInsertVectorEltInMemory(SDValue Vec, SDValue Val, SDValue Idx,
DebugLoc dl) {
SDValue Tmp1 = Vec;
SDValue Tmp2 = Val;
SDValue Tmp3 = Idx;
EVT VT = Tmp1.getValueType();
EVT EltVT = VT.getVectorElementType();
EVT IdxVT = Tmp3.getValueType();
EVT PtrVT = TLI.getPointerTy();
SDValue StackPtr = DAG.CreateStackTemporary(VT);
int SPFI = cast<FrameIndexSDNode>(StackPtr.getNode())->getIndex();
SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Tmp1, StackPtr,
PseudoSourceValue::getFixedStack(SPFI), 0,
false, false, 0);
unsigned CastOpc = IdxVT.bitsGT(PtrVT) ? ISD::TRUNCATE : ISD::ZERO_EXTEND;
Tmp3 = DAG.getNode(CastOpc, dl, PtrVT, Tmp3);
unsigned EltSize = EltVT.getSizeInBits()/8;
Tmp3 = DAG.getNode(ISD::MUL, dl, IdxVT, Tmp3,DAG.getConstant(EltSize, IdxVT));
SDValue StackPtr2 = DAG.getNode(ISD::ADD, dl, IdxVT, Tmp3, StackPtr);
Ch = DAG.getTruncStore(Ch, dl, Tmp2, StackPtr2,
PseudoSourceValue::getFixedStack(SPFI), 0, EltVT,
false, false, 0);
return DAG.getLoad(VT, dl, Ch, StackPtr,
PseudoSourceValue::getFixedStack(SPFI), 0,
false, false, 0);
}
SDValue SelectionDAGLegalize::
ExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val, SDValue Idx, DebugLoc dl) {
if (ConstantSDNode *InsertPos = dyn_cast<ConstantSDNode>(Idx)) {
EVT EltVT = Vec.getValueType().getVectorElementType();
if (Val.getValueType() == EltVT ||
(EltVT.isInteger() && Val.getValueType().bitsGE(EltVT))) {
SDValue ScVec = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl,
Vec.getValueType(), Val);
unsigned NumElts = Vec.getValueType().getVectorNumElements();
SmallVector<int, 8> ShufOps;
for (unsigned i = 0; i != NumElts; ++i)
ShufOps.push_back(i != InsertPos->getZExtValue() ? i : NumElts);
return DAG.getVectorShuffle(Vec.getValueType(), dl, Vec, ScVec,
&ShufOps[0]);
}
}
return PerformInsertVectorEltInMemory(Vec, Val, Idx, dl);
}
SDValue SelectionDAGLegalize::OptimizeFloatStore(StoreSDNode* ST) {
SDValue Tmp1 = ST->getChain();
SDValue Tmp2 = ST->getBasePtr();
SDValue Tmp3;
int SVOffset = ST->getSrcValueOffset();
unsigned Alignment = ST->getAlignment();
bool isVolatile = ST->isVolatile();
bool isNonTemporal = ST->isNonTemporal();
DebugLoc dl = ST->getDebugLoc();
if (ConstantFPSDNode *CFP = dyn_cast<ConstantFPSDNode>(ST->getValue())) {
if (CFP->getValueType(0) == MVT::f32 &&
getTypeAction(MVT::i32) == Legal) {
Tmp3 = DAG.getConstant(CFP->getValueAPF().
bitcastToAPInt().zextOrTrunc(32),
MVT::i32);
return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(),
SVOffset, isVolatile, isNonTemporal, Alignment);
} else if (CFP->getValueType(0) == MVT::f64) {
if (getTypeAction(MVT::i64) == Legal) {
Tmp3 = DAG.getConstant(CFP->getValueAPF().bitcastToAPInt().
zextOrTrunc(64), MVT::i64);
return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(),
SVOffset, isVolatile, isNonTemporal, Alignment);
} else if (getTypeAction(MVT::i32) == Legal && !ST->isVolatile()) {
const APInt &IntVal =CFP->getValueAPF().bitcastToAPInt();
SDValue Lo = DAG.getConstant(APInt(IntVal).trunc(32), MVT::i32);
SDValue Hi = DAG.getConstant(IntVal.lshr(32).trunc(32), MVT::i32);
if (TLI.isBigEndian()) std::swap(Lo, Hi);
Lo = DAG.getStore(Tmp1, dl, Lo, Tmp2, ST->getSrcValue(),
SVOffset, isVolatile, isNonTemporal, Alignment);
Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2,
DAG.getIntPtrConstant(4));
Hi = DAG.getStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(), SVOffset+4,
isVolatile, isNonTemporal, MinAlign(Alignment, 4U));
return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi);
}
}
}
return SDValue();
}
SDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) {
if (Op.getOpcode() == ISD::TargetConstant) return Op;
SDNode *Node = Op.getNode();
DebugLoc dl = Node->getDebugLoc();
for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i)
assert(getTypeAction(Node->getValueType(i)) == Legal &&
"Unexpected illegal type!");
for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i)
assert((isTypeLegal(Node->getOperand(i).getValueType()) ||
Node->getOperand(i).getOpcode() == ISD::TargetConstant) &&
"Unexpected illegal type!");
DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op);
if (I != LegalizedNodes.end()) return I->second;
SDValue Tmp1, Tmp2, Tmp3, Tmp4;
SDValue Result = Op;
bool isCustom = false;
TargetLowering::LegalizeAction Action;
bool SimpleFinishLegalizing = true;
switch (Node->getOpcode()) {
case ISD::INTRINSIC_W_CHAIN:
case ISD::INTRINSIC_WO_CHAIN:
case ISD::INTRINSIC_VOID:
case ISD::VAARG:
case ISD::STACKSAVE:
Action = TLI.getOperationAction(Node->getOpcode(), MVT::Other);
break;
case ISD::SINT_TO_FP:
case ISD::UINT_TO_FP:
case ISD::EXTRACT_VECTOR_ELT:
Action = TLI.getOperationAction(Node->getOpcode(),
Node->getOperand(0).getValueType());
break;
case ISD::FP_ROUND_INREG:
case ISD::SIGN_EXTEND_INREG: {
EVT InnerType = cast<VTSDNode>(Node->getOperand(1))->getVT();
Action = TLI.getOperationAction(Node->getOpcode(), InnerType);
break;
}
case ISD::SELECT_CC:
case ISD::SETCC:
case ISD::BR_CC: {
unsigned CCOperand = Node->getOpcode() == ISD::SELECT_CC ? 4 :
Node->getOpcode() == ISD::SETCC ? 2 : 1;
unsigned CompareOperand = Node->getOpcode() == ISD::BR_CC ? 2 : 0;
EVT OpVT = Node->getOperand(CompareOperand).getValueType();
ISD::CondCode CCCode =
cast<CondCodeSDNode>(Node->getOperand(CCOperand))->get();
Action = TLI.getCondCodeAction(CCCode, OpVT);
if (Action == TargetLowering::Legal) {
if (Node->getOpcode() == ISD::SELECT_CC)
Action = TLI.getOperationAction(Node->getOpcode(),
Node->getValueType(0));
else
Action = TLI.getOperationAction(Node->getOpcode(), OpVT);
}
break;
}
case ISD::LOAD:
case ISD::STORE:
SimpleFinishLegalizing = false;
break;
case ISD::CALLSEQ_START:
case ISD::CALLSEQ_END:
SimpleFinishLegalizing = false;
break;
case ISD::EXTRACT_ELEMENT:
case ISD::FLT_ROUNDS_:
case ISD::SADDO:
case ISD::SSUBO:
case ISD::UADDO:
case ISD::USUBO:
case ISD::SMULO:
case ISD::UMULO:
case ISD::FPOWI:
case ISD::MERGE_VALUES:
case ISD::EH_RETURN:
case ISD::FRAME_TO_ARGS_OFFSET:
case ISD::FP16_TO_FP32:
case ISD::FP32_TO_FP16:
Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0));
if (Action == TargetLowering::Legal)
Action = TargetLowering::Expand;
break;
case ISD::TRAMPOLINE:
case ISD::FRAMEADDR:
case ISD::RETURNADDR:
case ISD::EH_SJLJ_LONGJMP:
Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0));
if (Action == TargetLowering::Legal)
Action = TargetLowering::Custom;
break;
case ISD::BUILD_VECTOR:
SimpleFinishLegalizing = false;
break;
default:
if (Node->getOpcode() >= ISD::BUILTIN_OP_END) {
Action = TargetLowering::Legal;
} else {
Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0));
}
break;
}
if (SimpleFinishLegalizing) {
SmallVector<SDValue, 8> Ops, ResultVals;
for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i)
Ops.push_back(LegalizeOp(Node->getOperand(i)));
switch (Node->getOpcode()) {
default: break;
case ISD::BR:
case ISD::BRIND:
case ISD::BR_JT:
case ISD::BR_CC:
case ISD::BRCOND:
Ops[0] = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Ops[0],
LastCALLSEQ_END);
Ops[0] = LegalizeOp(Ops[0]);
LastCALLSEQ_END = DAG.getEntryNode();
break;
case ISD::SHL:
case ISD::SRL:
case ISD::SRA:
case ISD::ROTL:
case ISD::ROTR:
if (!Ops[1].getValueType().isVector())
Ops[1] = LegalizeOp(DAG.getShiftAmountOperand(Ops[1]));
break;
case ISD::SRL_PARTS:
case ISD::SRA_PARTS:
case ISD::SHL_PARTS:
if (!Ops[2].getValueType().isVector())
Ops[2] = LegalizeOp(DAG.getShiftAmountOperand(Ops[2]));
break;
}
Result = DAG.UpdateNodeOperands(Result.getValue(0), Ops.data(),
Ops.size());
switch (Action) {
case TargetLowering::Legal:
for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i)
ResultVals.push_back(Result.getValue(i));
break;
case TargetLowering::Custom:
Tmp1 = TLI.LowerOperation(Result, DAG);
if (Tmp1.getNode()) {
for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) {
if (e == 1)
ResultVals.push_back(Tmp1);
else
ResultVals.push_back(Tmp1.getValue(i));
}
break;
}
case TargetLowering::Expand:
ExpandNode(Result.getNode(), ResultVals);
break;
case TargetLowering::Promote:
PromoteNode(Result.getNode(), ResultVals);
break;
}
if (!ResultVals.empty()) {
for (unsigned i = 0, e = ResultVals.size(); i != e; ++i) {
if (ResultVals[i] != SDValue(Node, i))
ResultVals[i] = LegalizeOp(ResultVals[i]);
AddLegalizedOperand(SDValue(Node, i), ResultVals[i]);
}
return ResultVals[Op.getResNo()];
}
}
switch (Node->getOpcode()) {
default:
#ifndef NDEBUG
dbgs() << "NODE: ";
Node->dump( &DAG);
dbgs() << "\n";
#endif
llvm_unreachable("Do not know how to legalize this operator!");
case ISD::BUILD_VECTOR:
switch (TLI.getOperationAction(ISD::BUILD_VECTOR, Node->getValueType(0))) {
default: llvm_unreachable("This action is not supported yet!");
case TargetLowering::Custom:
Tmp3 = TLI.LowerOperation(Result, DAG);
if (Tmp3.getNode()) {
Result = Tmp3;
break;
}
case TargetLowering::Expand:
Result = ExpandBUILD_VECTOR(Result.getNode());
break;
}
break;
case ISD::CALLSEQ_START: {
SDNode *CallEnd = FindCallEndFromCallStart(Node);
{SmallPtrSet<SDNode*, 32> NodesLeadingTo;
for (unsigned i = 0, e = CallEnd->getNumOperands(); i != e; ++i)
LegalizeAllNodesNotLeadingTo(CallEnd->getOperand(i).getNode(), Node,
NodesLeadingTo);
}
Tmp1 = LegalizeOp(Node->getOperand(0));
if (LastCALLSEQ_END.getOpcode() != ISD::EntryToken) {
Tmp1 = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
Tmp1, LastCALLSEQ_END);
Tmp1 = LegalizeOp(Tmp1);
}
if (Tmp1 != Node->getOperand(0)) {
SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end());
Ops[0] = Tmp1;
Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size());
}
AddLegalizedOperand(Op.getValue(0), Result);
if (Node->getNumValues() == 2) AddLegalizedOperand(Op.getValue(1), Result.getValue(1));
assert(!IsLegalizingCall && "Inconsistent sequentialization of calls!");
LastCALLSEQ_END = SDValue(CallEnd, 0);
IsLegalizingCall = true;
LegalizeOp(LastCALLSEQ_END);
assert(!IsLegalizingCall && "CALLSEQ_END should have cleared this!");
return Result;
}
case ISD::CALLSEQ_END:
if (LastCALLSEQ_END.getNode() != Node) {
LegalizeOp(SDValue(FindCallStartFromCallEnd(Node), 0));
DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op);
assert(I != LegalizedNodes.end() &&
"Legalizing the call start should have legalized this node!");
return I->second;
}
Tmp1 = LegalizeOp(Node->getOperand(0)); if (Node->getOperand(Node->getNumOperands()-1).getValueType() != MVT::Flag){
if (Tmp1 != Node->getOperand(0)) {
SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end());
Ops[0] = Tmp1;
Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size());
}
} else {
Tmp2 = LegalizeOp(Node->getOperand(Node->getNumOperands()-1));
if (Tmp1 != Node->getOperand(0) ||
Tmp2 != Node->getOperand(Node->getNumOperands()-1)) {
SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end());
Ops[0] = Tmp1;
Ops.back() = Tmp2;
Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size());
}
}
assert(IsLegalizingCall && "Call sequence imbalance between start/end?");
IsLegalizingCall = false;
AddLegalizedOperand(SDValue(Node, 0), Result.getValue(0));
if (Node->getNumValues() == 2)
AddLegalizedOperand(SDValue(Node, 1), Result.getValue(1));
return Result.getValue(Op.getResNo());
case ISD::LOAD: {
LoadSDNode *LD = cast<LoadSDNode>(Node);
Tmp1 = LegalizeOp(LD->getChain()); Tmp2 = LegalizeOp(LD->getBasePtr());
ISD::LoadExtType ExtType = LD->getExtensionType();
if (ExtType == ISD::NON_EXTLOAD) {
EVT VT = Node->getValueType(0);
Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2, LD->getOffset());
Tmp3 = Result.getValue(0);
Tmp4 = Result.getValue(1);
switch (TLI.getOperationAction(Node->getOpcode(), VT)) {
default: llvm_unreachable("This action is not supported yet!");
case TargetLowering::Legal:
if (!TLI.allowsUnalignedMemoryAccesses(LD->getMemoryVT())) {
const Type *Ty = LD->getMemoryVT().getTypeForEVT(*DAG.getContext());
unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty);
if (LD->getAlignment() < ABIAlignment){
Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()),
DAG, TLI);
Tmp3 = Result.getOperand(0);
Tmp4 = Result.getOperand(1);
Tmp3 = LegalizeOp(Tmp3);
Tmp4 = LegalizeOp(Tmp4);
}
}
break;
case TargetLowering::Custom:
Tmp1 = TLI.LowerOperation(Tmp3, DAG);
if (Tmp1.getNode()) {
Tmp3 = LegalizeOp(Tmp1);
Tmp4 = LegalizeOp(Tmp1.getValue(1));
}
break;
case TargetLowering::Promote: {
assert(VT.isVector() && "Cannot promote this load!");
EVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), VT);
Tmp1 = DAG.getLoad(NVT, dl, Tmp1, Tmp2, LD->getSrcValue(),
LD->getSrcValueOffset(),
LD->isVolatile(), LD->isNonTemporal(),
LD->getAlignment());
Tmp3 = LegalizeOp(DAG.getNode(ISD::BIT_CONVERT, dl, VT, Tmp1));
Tmp4 = LegalizeOp(Tmp1.getValue(1));
break;
}
}
AddLegalizedOperand(SDValue(Node, 0), Tmp3);
AddLegalizedOperand(SDValue(Node, 1), Tmp4);
return Op.getResNo() ? Tmp4 : Tmp3;
} else {
EVT SrcVT = LD->getMemoryVT();
unsigned SrcWidth = SrcVT.getSizeInBits();
int SVOffset = LD->getSrcValueOffset();
unsigned Alignment = LD->getAlignment();
bool isVolatile = LD->isVolatile();
bool isNonTemporal = LD->isNonTemporal();
if (SrcWidth != SrcVT.getStoreSizeInBits() &&
(SrcVT != MVT::i1 ||
TLI.getLoadExtAction(ExtType, MVT::i1) == TargetLowering::Promote)) {
unsigned NewWidth = SrcVT.getStoreSizeInBits();
EVT NVT = EVT::getIntegerVT(*DAG.getContext(), NewWidth);
SDValue Ch;
ISD::LoadExtType NewExtType =
ExtType == ISD::ZEXTLOAD ? ISD::ZEXTLOAD : ISD::EXTLOAD;
Result = DAG.getExtLoad(NewExtType, dl, Node->getValueType(0),
Tmp1, Tmp2, LD->getSrcValue(), SVOffset,
NVT, isVolatile, isNonTemporal, Alignment);
Ch = Result.getValue(1);
if (ExtType == ISD::SEXTLOAD)
Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl,
Result.getValueType(),
Result, DAG.getValueType(SrcVT));
else if (ExtType == ISD::ZEXTLOAD || NVT == Result.getValueType())
Result = DAG.getNode(ISD::AssertZext, dl,
Result.getValueType(), Result,
DAG.getValueType(SrcVT));
Tmp1 = LegalizeOp(Result);
Tmp2 = LegalizeOp(Ch);
} else if (SrcWidth & (SrcWidth - 1)) {
assert(!SrcVT.isVector() && "Unsupported extload!");
unsigned RoundWidth = 1 << Log2_32(SrcWidth);
assert(RoundWidth < SrcWidth);
unsigned ExtraWidth = SrcWidth - RoundWidth;
assert(ExtraWidth < RoundWidth);
assert(!(RoundWidth % 8) && !(ExtraWidth % 8) &&
"Load size not an integral number of bytes!");
EVT RoundVT = EVT::getIntegerVT(*DAG.getContext(), RoundWidth);
EVT ExtraVT = EVT::getIntegerVT(*DAG.getContext(), ExtraWidth);
SDValue Lo, Hi, Ch;
unsigned IncrementSize;
if (TLI.isLittleEndian()) {
Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl,
Node->getValueType(0), Tmp1, Tmp2,
LD->getSrcValue(), SVOffset, RoundVT, isVolatile,
isNonTemporal, Alignment);
IncrementSize = RoundWidth / 8;
Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2,
DAG.getIntPtrConstant(IncrementSize));
Hi = DAG.getExtLoad(ExtType, dl, Node->getValueType(0), Tmp1, Tmp2,
LD->getSrcValue(), SVOffset + IncrementSize,
ExtraVT, isVolatile, isNonTemporal,
MinAlign(Alignment, IncrementSize));
Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1),
Hi.getValue(1));
Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi,
DAG.getConstant(RoundWidth, TLI.getShiftAmountTy()));
Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi);
} else {
Hi = DAG.getExtLoad(ExtType, dl, Node->getValueType(0), Tmp1, Tmp2,
LD->getSrcValue(), SVOffset, RoundVT, isVolatile,
isNonTemporal, Alignment);
IncrementSize = RoundWidth / 8;
Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2,
DAG.getIntPtrConstant(IncrementSize));
Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl,
Node->getValueType(0), Tmp1, Tmp2,
LD->getSrcValue(), SVOffset + IncrementSize,
ExtraVT, isVolatile, isNonTemporal,
MinAlign(Alignment, IncrementSize));
Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1),
Hi.getValue(1));
Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi,
DAG.getConstant(ExtraWidth, TLI.getShiftAmountTy()));
Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi);
}
Tmp1 = LegalizeOp(Result);
Tmp2 = LegalizeOp(Ch);
} else {
switch (TLI.getLoadExtAction(ExtType, SrcVT)) {
default: llvm_unreachable("This action is not supported yet!");
case TargetLowering::Custom:
isCustom = true;
case TargetLowering::Legal:
Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2, LD->getOffset());
Tmp1 = Result.getValue(0);
Tmp2 = Result.getValue(1);
if (isCustom) {
Tmp3 = TLI.LowerOperation(Result, DAG);
if (Tmp3.getNode()) {
Tmp1 = LegalizeOp(Tmp3);
Tmp2 = LegalizeOp(Tmp3.getValue(1));
}
} else {
if (!TLI.allowsUnalignedMemoryAccesses(LD->getMemoryVT())) {
const Type *Ty = LD->getMemoryVT().getTypeForEVT(*DAG.getContext());
unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty);
if (LD->getAlignment() < ABIAlignment){
Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()),
DAG, TLI);
Tmp1 = Result.getOperand(0);
Tmp2 = Result.getOperand(1);
Tmp1 = LegalizeOp(Tmp1);
Tmp2 = LegalizeOp(Tmp2);
}
}
}
break;
case TargetLowering::Expand:
if ((SrcVT == MVT::f32 && (Node->getValueType(0) == MVT::f64 ||
Node->getValueType(0) == MVT::f128)) ||
(SrcVT == MVT::f64 && Node->getValueType(0) == MVT::f128)) {
SDValue Load = DAG.getLoad(SrcVT, dl, Tmp1, Tmp2, LD->getSrcValue(),
LD->getSrcValueOffset(),
LD->isVolatile(), LD->isNonTemporal(),
LD->getAlignment());
Result = DAG.getNode(ISD::FP_EXTEND, dl,
Node->getValueType(0), Load);
Tmp1 = LegalizeOp(Result); Tmp2 = LegalizeOp(Load.getValue(1));
break;
}
assert(ExtType != ISD::EXTLOAD &&"EXTLOAD should always be supported!");
Result = DAG.getExtLoad(ISD::EXTLOAD, dl, Node->getValueType(0),
Tmp1, Tmp2, LD->getSrcValue(),
LD->getSrcValueOffset(), SrcVT,
LD->isVolatile(), LD->isNonTemporal(),
LD->getAlignment());
SDValue ValRes;
if (ExtType == ISD::SEXTLOAD)
ValRes = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl,
Result.getValueType(),
Result, DAG.getValueType(SrcVT));
else
ValRes = DAG.getZeroExtendInReg(Result, dl, SrcVT);
Tmp1 = LegalizeOp(ValRes); Tmp2 = LegalizeOp(Result.getValue(1)); break;
}
}
AddLegalizedOperand(SDValue(Node, 0), Tmp1);
AddLegalizedOperand(SDValue(Node, 1), Tmp2);
return Op.getResNo() ? Tmp2 : Tmp1;
}
}
case ISD::STORE: {
StoreSDNode *ST = cast<StoreSDNode>(Node);
Tmp1 = LegalizeOp(ST->getChain()); Tmp2 = LegalizeOp(ST->getBasePtr()); int SVOffset = ST->getSrcValueOffset();
unsigned Alignment = ST->getAlignment();
bool isVolatile = ST->isVolatile();
bool isNonTemporal = ST->isNonTemporal();
if (!ST->isTruncatingStore()) {
if (SDNode *OptStore = OptimizeFloatStore(ST).getNode()) {
Result = SDValue(OptStore, 0);
break;
}
{
Tmp3 = LegalizeOp(ST->getValue());
Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp3, Tmp2,
ST->getOffset());
EVT VT = Tmp3.getValueType();
switch (TLI.getOperationAction(ISD::STORE, VT)) {
default: llvm_unreachable("This action is not supported yet!");
case TargetLowering::Legal:
if (!TLI.allowsUnalignedMemoryAccesses(ST->getMemoryVT())) {
const Type *Ty = ST->getMemoryVT().getTypeForEVT(*DAG.getContext());
unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty);
if (ST->getAlignment() < ABIAlignment)
Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()),
DAG, TLI);
}
break;
case TargetLowering::Custom:
Tmp1 = TLI.LowerOperation(Result, DAG);
if (Tmp1.getNode()) Result = Tmp1;
break;
case TargetLowering::Promote:
assert(VT.isVector() && "Unknown legal promote case!");
Tmp3 = DAG.getNode(ISD::BIT_CONVERT, dl,
TLI.getTypeToPromoteTo(ISD::STORE, VT), Tmp3);
Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2,
ST->getSrcValue(), SVOffset, isVolatile,
isNonTemporal, Alignment);
break;
}
break;
}
} else {
Tmp3 = LegalizeOp(ST->getValue());
EVT StVT = ST->getMemoryVT();
unsigned StWidth = StVT.getSizeInBits();
if (StWidth != StVT.getStoreSizeInBits()) {
EVT NVT = EVT::getIntegerVT(*DAG.getContext(),
StVT.getStoreSizeInBits());
Tmp3 = DAG.getZeroExtendInReg(Tmp3, dl, StVT);
Result = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(),
SVOffset, NVT, isVolatile, isNonTemporal,
Alignment);
} else if (StWidth & (StWidth - 1)) {
assert(!StVT.isVector() && "Unsupported truncstore!");
unsigned RoundWidth = 1 << Log2_32(StWidth);
assert(RoundWidth < StWidth);
unsigned ExtraWidth = StWidth - RoundWidth;
assert(ExtraWidth < RoundWidth);
assert(!(RoundWidth % 8) && !(ExtraWidth % 8) &&
"Store size not an integral number of bytes!");
EVT RoundVT = EVT::getIntegerVT(*DAG.getContext(), RoundWidth);
EVT ExtraVT = EVT::getIntegerVT(*DAG.getContext(), ExtraWidth);
SDValue Lo, Hi;
unsigned IncrementSize;
if (TLI.isLittleEndian()) {
Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(),
SVOffset, RoundVT,
isVolatile, isNonTemporal, Alignment);
IncrementSize = RoundWidth / 8;
Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2,
DAG.getIntPtrConstant(IncrementSize));
Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3,
DAG.getConstant(RoundWidth, TLI.getShiftAmountTy()));
Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(),
SVOffset + IncrementSize, ExtraVT, isVolatile,
isNonTemporal,
MinAlign(Alignment, IncrementSize));
} else {
Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3,
DAG.getConstant(ExtraWidth, TLI.getShiftAmountTy()));
Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(),
SVOffset, RoundVT, isVolatile, isNonTemporal,
Alignment);
IncrementSize = RoundWidth / 8;
Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2,
DAG.getIntPtrConstant(IncrementSize));
Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(),
SVOffset + IncrementSize, ExtraVT, isVolatile,
isNonTemporal,
MinAlign(Alignment, IncrementSize));
}
Result = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi);
} else {
if (Tmp1 != ST->getChain() || Tmp3 != ST->getValue() ||
Tmp2 != ST->getBasePtr())
Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp3, Tmp2,
ST->getOffset());
switch (TLI.getTruncStoreAction(ST->getValue().getValueType(), StVT)) {
default: llvm_unreachable("This action is not supported yet!");
case TargetLowering::Legal:
if (!TLI.allowsUnalignedMemoryAccesses(ST->getMemoryVT())) {
const Type *Ty = ST->getMemoryVT().getTypeForEVT(*DAG.getContext());
unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty);
if (ST->getAlignment() < ABIAlignment)
Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()),
DAG, TLI);
}
break;
case TargetLowering::Custom:
Result = TLI.LowerOperation(Result, DAG);
break;
case Expand:
assert(isTypeLegal(StVT) && "Do not know how to expand this store!");
Tmp3 = DAG.getNode(ISD::TRUNCATE, dl, StVT, Tmp3);
Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(),
SVOffset, isVolatile, isNonTemporal,
Alignment);
break;
}
}
}
break;
}
}
assert(Result.getValueType() == Op.getValueType() &&
"Bad legalization!");
if (Result != Op)
Result = LegalizeOp(Result);
AddLegalizedOperand(Op, Result);
return Result;
}
SDValue SelectionDAGLegalize::ExpandExtractFromVectorThroughStack(SDValue Op) {
SDValue Vec = Op.getOperand(0);
SDValue Idx = Op.getOperand(1);
DebugLoc dl = Op.getDebugLoc();
SDValue StackPtr = DAG.CreateStackTemporary(Vec.getValueType());
SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Vec, StackPtr, NULL, 0,
false, false, 0);
unsigned EltSize =
Vec.getValueType().getVectorElementType().getSizeInBits()/8;
Idx = DAG.getNode(ISD::MUL, dl, Idx.getValueType(), Idx,
DAG.getConstant(EltSize, Idx.getValueType()));
if (Idx.getValueType().bitsGT(TLI.getPointerTy()))
Idx = DAG.getNode(ISD::TRUNCATE, dl, TLI.getPointerTy(), Idx);
else
Idx = DAG.getNode(ISD::ZERO_EXTEND, dl, TLI.getPointerTy(), Idx);
StackPtr = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx, StackPtr);
if (Op.getValueType().isVector())
return DAG.getLoad(Op.getValueType(), dl, Ch, StackPtr, NULL, 0,
false, false, 0);
else
return DAG.getExtLoad(ISD::EXTLOAD, dl, Op.getValueType(), Ch, StackPtr,
NULL, 0, Vec.getValueType().getVectorElementType(),
false, false, 0);
}
SDValue SelectionDAGLegalize::ExpandVectorBuildThroughStack(SDNode* Node) {
EVT VT = Node->getValueType(0);
EVT EltVT = VT.getVectorElementType();
DebugLoc dl = Node->getDebugLoc();
SDValue FIPtr = DAG.CreateStackTemporary(VT);
int FI = cast<FrameIndexSDNode>(FIPtr.getNode())->getIndex();
const Value *SV = PseudoSourceValue::getFixedStack(FI);
SmallVector<SDValue, 8> Stores;
unsigned TypeByteSize = EltVT.getSizeInBits() / 8;
for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) {
if (Node->getOperand(i).getOpcode() == ISD::UNDEF) continue;
unsigned Offset = TypeByteSize*i;
SDValue Idx = DAG.getConstant(Offset, FIPtr.getValueType());
Idx = DAG.getNode(ISD::ADD, dl, FIPtr.getValueType(), FIPtr, Idx);
if (EltVT.bitsLT(Node->getOperand(i).getValueType().getScalarType())) {
Stores.push_back(DAG.getTruncStore(DAG.getEntryNode(), dl,
Node->getOperand(i), Idx, SV, Offset,
EltVT, false, false, 0));
} else
Stores.push_back(DAG.getStore(DAG.getEntryNode(), dl,
Node->getOperand(i), Idx, SV, Offset,
false, false, 0));
}
SDValue StoreChain;
if (!Stores.empty()) StoreChain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,
&Stores[0], Stores.size());
else
StoreChain = DAG.getEntryNode();
return DAG.getLoad(VT, dl, StoreChain, FIPtr, SV, 0, false, false, 0);
}
SDValue SelectionDAGLegalize::ExpandFCOPYSIGN(SDNode* Node) {
DebugLoc dl = Node->getDebugLoc();
SDValue Tmp1 = Node->getOperand(0);
SDValue Tmp2 = Node->getOperand(1);
SDValue SignBit;
EVT FloatVT = Tmp2.getValueType();
EVT IVT = EVT::getIntegerVT(*DAG.getContext(), FloatVT.getSizeInBits());
if (isTypeLegal(IVT)) {
SignBit = DAG.getNode(ISD::BIT_CONVERT, dl, IVT, Tmp2);
} else {
MVT LoadTy = TLI.getPointerTy();
SDValue StackPtr = DAG.CreateStackTemporary(FloatVT, LoadTy);
SDValue Ch =
DAG.getStore(DAG.getEntryNode(), dl, Tmp2, StackPtr, NULL, 0,
false, false, 0);
if (TLI.isBigEndian()) {
assert(FloatVT.isByteSized() && "Unsupported floating point type!");
SignBit = DAG.getLoad(LoadTy, dl, Ch, StackPtr, NULL, 0, false, false, 0);
} else { SDValue LoadPtr = StackPtr;
unsigned Strides = (FloatVT.getSizeInBits()-1)/LoadTy.getSizeInBits();
unsigned ByteOffset = (Strides * LoadTy.getSizeInBits()) / 8;
LoadPtr = DAG.getNode(ISD::ADD, dl, LoadPtr.getValueType(),
LoadPtr, DAG.getIntPtrConstant(ByteOffset));
SignBit = DAG.getLoad(LoadTy, dl, Ch, LoadPtr, NULL, 0, false, false, 0);
unsigned BitShift = LoadTy.getSizeInBits() -
(FloatVT.getSizeInBits() - 8 * ByteOffset);
assert(BitShift < LoadTy.getSizeInBits() && "Pointer advanced wrong?");
if (BitShift)
SignBit = DAG.getNode(ISD::SHL, dl, LoadTy, SignBit,
DAG.getConstant(BitShift,TLI.getShiftAmountTy()));
}
}
SignBit = DAG.getSetCC(dl, TLI.getSetCCResultType(SignBit.getValueType()),
SignBit, DAG.getConstant(0, SignBit.getValueType()),
ISD::SETLT);
SDValue AbsVal = DAG.getNode(ISD::FABS, dl, Tmp1.getValueType(), Tmp1);
return DAG.getNode(ISD::SELECT, dl, AbsVal.getValueType(), SignBit,
DAG.getNode(ISD::FNEG, dl, AbsVal.getValueType(), AbsVal),
AbsVal);
}
void SelectionDAGLegalize::ExpandDYNAMIC_STACKALLOC(SDNode* Node,
SmallVectorImpl<SDValue> &Results) {
unsigned SPReg = TLI.getStackPointerRegisterToSaveRestore();
assert(SPReg && "Target cannot require DYNAMIC_STACKALLOC expansion and"
" not tell us which reg is the stack pointer!");
DebugLoc dl = Node->getDebugLoc();
EVT VT = Node->getValueType(0);
SDValue Tmp1 = SDValue(Node, 0);
SDValue Tmp2 = SDValue(Node, 1);
SDValue Tmp3 = Node->getOperand(2);
SDValue Chain = Tmp1.getOperand(0);
Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(0, true));
SDValue Size = Tmp2.getOperand(1);
SDValue SP = DAG.getCopyFromReg(Chain, dl, SPReg, VT);
Chain = SP.getValue(1);
unsigned Align = cast<ConstantSDNode>(Tmp3)->getZExtValue();
unsigned StackAlign =
TLI.getTargetMachine().getFrameInfo()->getStackAlignment();
if (Align > StackAlign)
SP = DAG.getNode(ISD::AND, dl, VT, SP,
DAG.getConstant(-(uint64_t)Align, VT));
Tmp1 = DAG.getNode(ISD::SUB, dl, VT, SP, Size); Chain = DAG.getCopyToReg(Chain, dl, SPReg, Tmp1);
Tmp2 = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(0, true),
DAG.getIntPtrConstant(0, true), SDValue());
Results.push_back(Tmp1);
Results.push_back(Tmp2);
}
void SelectionDAGLegalize::LegalizeSetCCCondCode(EVT VT,
SDValue &LHS, SDValue &RHS,
SDValue &CC,
DebugLoc dl) {
EVT OpVT = LHS.getValueType();
ISD::CondCode CCCode = cast<CondCodeSDNode>(CC)->get();
switch (TLI.getCondCodeAction(CCCode, OpVT)) {
default: llvm_unreachable("Unknown condition code action!");
case TargetLowering::Legal:
break;
case TargetLowering::Expand: {
ISD::CondCode CC1 = ISD::SETCC_INVALID, CC2 = ISD::SETCC_INVALID;
unsigned Opc = 0;
switch (CCCode) {
default: llvm_unreachable("Don't know how to expand this condition!");
case ISD::SETOEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETO; Opc = ISD::AND; break;
case ISD::SETOGT: CC1 = ISD::SETGT; CC2 = ISD::SETO; Opc = ISD::AND; break;
case ISD::SETOGE: CC1 = ISD::SETGE; CC2 = ISD::SETO; Opc = ISD::AND; break;
case ISD::SETOLT: CC1 = ISD::SETLT; CC2 = ISD::SETO; Opc = ISD::AND; break;
case ISD::SETOLE: CC1 = ISD::SETLE; CC2 = ISD::SETO; Opc = ISD::AND; break;
case ISD::SETONE: CC1 = ISD::SETNE; CC2 = ISD::SETO; Opc = ISD::AND; break;
case ISD::SETUEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETUO; Opc = ISD::OR; break;
case ISD::SETUGT: CC1 = ISD::SETGT; CC2 = ISD::SETUO; Opc = ISD::OR; break;
case ISD::SETUGE: CC1 = ISD::SETGE; CC2 = ISD::SETUO; Opc = ISD::OR; break;
case ISD::SETULT: CC1 = ISD::SETLT; CC2 = ISD::SETUO; Opc = ISD::OR; break;
case ISD::SETULE: CC1 = ISD::SETLE; CC2 = ISD::SETUO; Opc = ISD::OR; break;
case ISD::SETUNE: CC1 = ISD::SETNE; CC2 = ISD::SETUO; Opc = ISD::OR; break;
}
SDValue SetCC1 = DAG.getSetCC(dl, VT, LHS, RHS, CC1);
SDValue SetCC2 = DAG.getSetCC(dl, VT, LHS, RHS, CC2);
LHS = DAG.getNode(Opc, dl, VT, SetCC1, SetCC2);
RHS = SDValue();
CC = SDValue();
break;
}
}
}
SDValue SelectionDAGLegalize::EmitStackConvert(SDValue SrcOp,
EVT SlotVT,
EVT DestVT,
DebugLoc dl) {
unsigned SrcAlign =
TLI.getTargetData()->getPrefTypeAlignment(SrcOp.getValueType().
getTypeForEVT(*DAG.getContext()));
SDValue FIPtr = DAG.CreateStackTemporary(SlotVT, SrcAlign);
FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(FIPtr);
int SPFI = StackPtrFI->getIndex();
const Value *SV = PseudoSourceValue::getFixedStack(SPFI);
unsigned SrcSize = SrcOp.getValueType().getSizeInBits();
unsigned SlotSize = SlotVT.getSizeInBits();
unsigned DestSize = DestVT.getSizeInBits();
const Type *DestType = DestVT.getTypeForEVT(*DAG.getContext());
unsigned DestAlign = TLI.getTargetData()->getPrefTypeAlignment(DestType);
SDValue Store;
if (SrcSize > SlotSize)
Store = DAG.getTruncStore(DAG.getEntryNode(), dl, SrcOp, FIPtr,
SV, 0, SlotVT, false, false, SrcAlign);
else {
assert(SrcSize == SlotSize && "Invalid store");
Store = DAG.getStore(DAG.getEntryNode(), dl, SrcOp, FIPtr,
SV, 0, false, false, SrcAlign);
}
if (SlotSize == DestSize)
return DAG.getLoad(DestVT, dl, Store, FIPtr, SV, 0, false, false,
DestAlign);
assert(SlotSize < DestSize && "Unknown extension!");
return DAG.getExtLoad(ISD::EXTLOAD, dl, DestVT, Store, FIPtr, SV, 0, SlotVT,
false, false, DestAlign);
}
SDValue SelectionDAGLegalize::ExpandSCALAR_TO_VECTOR(SDNode *Node) {
DebugLoc dl = Node->getDebugLoc();
SDValue StackPtr = DAG.CreateStackTemporary(Node->getValueType(0));
FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(StackPtr);
int SPFI = StackPtrFI->getIndex();
SDValue Ch = DAG.getTruncStore(DAG.getEntryNode(), dl, Node->getOperand(0),
StackPtr,
PseudoSourceValue::getFixedStack(SPFI), 0,
Node->getValueType(0).getVectorElementType(),
false, false, 0);
return DAG.getLoad(Node->getValueType(0), dl, Ch, StackPtr,
PseudoSourceValue::getFixedStack(SPFI), 0,
false, false, 0);
}
SDValue SelectionDAGLegalize::ExpandBUILD_VECTOR(SDNode *Node) {
unsigned NumElems = Node->getNumOperands();
SDValue Value1, Value2;
DebugLoc dl = Node->getDebugLoc();
EVT VT = Node->getValueType(0);
EVT OpVT = Node->getOperand(0).getValueType();
EVT EltVT = VT.getVectorElementType();
bool isOnlyLowElement = true;
bool MoreThanTwoValues = false;
bool isConstant = true;
for (unsigned i = 0; i < NumElems; ++i) {
SDValue V = Node->getOperand(i);
if (V.getOpcode() == ISD::UNDEF)
continue;
if (i > 0)
isOnlyLowElement = false;
if (!isa<ConstantFPSDNode>(V) && !isa<ConstantSDNode>(V))
isConstant = false;
if (!Value1.getNode()) {
Value1 = V;
} else if (!Value2.getNode()) {
if (V != Value1)
Value2 = V;
} else if (V != Value1 && V != Value2) {
MoreThanTwoValues = true;
}
}
if (!Value1.getNode())
return DAG.getUNDEF(VT);
if (isOnlyLowElement)
return DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Node->getOperand(0));
if (isConstant) {
std::vector<Constant*> CV;
for (unsigned i = 0, e = NumElems; i != e; ++i) {
if (ConstantFPSDNode *V =
dyn_cast<ConstantFPSDNode>(Node->getOperand(i))) {
CV.push_back(const_cast<ConstantFP *>(V->getConstantFPValue()));
} else if (ConstantSDNode *V =
dyn_cast<ConstantSDNode>(Node->getOperand(i))) {
if (OpVT==EltVT)
CV.push_back(const_cast<ConstantInt *>(V->getConstantIntValue()));
else {
const ConstantInt *CI = V->getConstantIntValue();
CV.push_back(ConstantInt::get(EltVT.getTypeForEVT(*DAG.getContext()),
CI->getZExtValue()));
}
} else {
assert(Node->getOperand(i).getOpcode() == ISD::UNDEF);
const Type *OpNTy = EltVT.getTypeForEVT(*DAG.getContext());
CV.push_back(UndefValue::get(OpNTy));
}
}
Constant *CP = ConstantVector::get(CV);
SDValue CPIdx = DAG.getConstantPool(CP, TLI.getPointerTy());
unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment();
return DAG.getLoad(VT, dl, DAG.getEntryNode(), CPIdx,
PseudoSourceValue::getConstantPool(), 0,
false, false, Alignment);
}
if (!MoreThanTwoValues) {
SmallVector<int, 8> ShuffleVec(NumElems, -1);
for (unsigned i = 0; i < NumElems; ++i) {
SDValue V = Node->getOperand(i);
if (V.getOpcode() == ISD::UNDEF)
continue;
ShuffleVec[i] = V == Value1 ? 0 : NumElems;
}
if (TLI.isShuffleMaskLegal(ShuffleVec, Node->getValueType(0))) {
SDValue Vec1 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value1);
SDValue Vec2;
if (Value2.getNode())
Vec2 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value2);
else
Vec2 = DAG.getUNDEF(VT);
return DAG.getVectorShuffle(VT, dl, Vec1, Vec2, ShuffleVec.data());
}
}
return ExpandVectorBuildThroughStack(Node);
}
SDValue SelectionDAGLegalize::ExpandLibCall(RTLIB::Libcall LC, SDNode *Node,
bool isSigned) {
assert(!IsLegalizingCall && "Cannot overlap legalization of calls!");
SDValue InChain = DAG.getEntryNode();
TargetLowering::ArgListTy Args;
TargetLowering::ArgListEntry Entry;
for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) {
EVT ArgVT = Node->getOperand(i).getValueType();
const Type *ArgTy = ArgVT.getTypeForEVT(*DAG.getContext());
Entry.Node = Node->getOperand(i); Entry.Ty = ArgTy;
Entry.isSExt = isSigned;
Entry.isZExt = !isSigned;
Args.push_back(Entry);
}
SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC),
TLI.getPointerTy());
const Type *RetTy = Node->getValueType(0).getTypeForEVT(*DAG.getContext());
std::pair<SDValue, SDValue> CallInfo =
TLI.LowerCallTo(InChain, RetTy, isSigned, !isSigned, false, false,
0, TLI.getLibcallCallingConv(LC), false,
true,
Callee, Args, DAG, Node->getDebugLoc());
LegalizeOp(CallInfo.second);
return CallInfo.first;
}
SDValue SelectionDAGLegalize::ExpandFPLibCall(SDNode* Node,
RTLIB::Libcall Call_F32,
RTLIB::Libcall Call_F64,
RTLIB::Libcall Call_F80,
RTLIB::Libcall Call_PPCF128) {
RTLIB::Libcall LC;
switch (Node->getValueType(0).getSimpleVT().SimpleTy) {
default: llvm_unreachable("Unexpected request for libcall!");
case MVT::f32: LC = Call_F32; break;
case MVT::f64: LC = Call_F64; break;
case MVT::f80: LC = Call_F80; break;
case MVT::ppcf128: LC = Call_PPCF128; break;
}
return ExpandLibCall(LC, Node, false);
}
SDValue SelectionDAGLegalize::ExpandIntLibCall(SDNode* Node, bool isSigned,
RTLIB::Libcall Call_I8,
RTLIB::Libcall Call_I16,
RTLIB::Libcall Call_I32,
RTLIB::Libcall Call_I64,
RTLIB::Libcall Call_I128) {
RTLIB::Libcall LC;
switch (Node->getValueType(0).getSimpleVT().SimpleTy) {
default: llvm_unreachable("Unexpected request for libcall!");
case MVT::i8: LC = Call_I8; break;
case MVT::i16: LC = Call_I16; break;
case MVT::i32: LC = Call_I32; break;
case MVT::i64: LC = Call_I64; break;
case MVT::i128: LC = Call_I128; break;
}
return ExpandLibCall(LC, Node, isSigned);
}
SDValue SelectionDAGLegalize::ExpandLegalINT_TO_FP(bool isSigned,
SDValue Op0,
EVT DestVT,
DebugLoc dl) {
if (Op0.getValueType() == MVT::i32) {
SDValue StackSlot = DAG.CreateStackTemporary(MVT::f64);
SDValue WordOff = DAG.getConstant(sizeof(int), TLI.getPointerTy());
SDValue Hi = StackSlot;
SDValue Lo = DAG.getNode(ISD::ADD, dl,
TLI.getPointerTy(), StackSlot, WordOff);
if (TLI.isLittleEndian())
std::swap(Hi, Lo);
SDValue Op0Mapped;
if (isSigned) {
SDValue SignBit = DAG.getConstant(0x80000000u, MVT::i32);
Op0Mapped = DAG.getNode(ISD::XOR, dl, MVT::i32, Op0, SignBit);
} else {
Op0Mapped = Op0;
}
SDValue Store1 = DAG.getStore(DAG.getEntryNode(), dl,
Op0Mapped, Lo, NULL, 0,
false, false, 0);
SDValue InitialHi = DAG.getConstant(0x43300000u, MVT::i32);
SDValue Store2=DAG.getStore(Store1, dl, InitialHi, Hi, NULL, 0,
false, false, 0);
SDValue Load = DAG.getLoad(MVT::f64, dl, Store2, StackSlot, NULL, 0,
false, false, 0);
SDValue Bias = DAG.getConstantFP(isSigned ?
BitsToDouble(0x4330000080000000ULL) :
BitsToDouble(0x4330000000000000ULL),
MVT::f64);
SDValue Sub = DAG.getNode(ISD::FSUB, dl, MVT::f64, Load, Bias);
SDValue Result;
if (DestVT == MVT::f64) {
Result = Sub;
} else if (DestVT.bitsLT(MVT::f64)) {
Result = DAG.getNode(ISD::FP_ROUND, dl, DestVT, Sub,
DAG.getIntPtrConstant(0));
} else if (DestVT.bitsGT(MVT::f64)) {
Result = DAG.getNode(ISD::FP_EXTEND, dl, DestVT, Sub);
}
return Result;
}
assert(!isSigned && "Legalize cannot Expand SINT_TO_FP for i64 yet");
if (Op0.getValueType() == MVT::i64 && DestVT == MVT::f64) {
SDValue TwoP52 =
DAG.getConstant(UINT64_C(0x4330000000000000), MVT::i64);
SDValue TwoP84PlusTwoP52 =
DAG.getConstantFP(BitsToDouble(UINT64_C(0x4530000000100000)), MVT::f64);
SDValue TwoP84 =
DAG.getConstant(UINT64_C(0x4530000000000000), MVT::i64);
SDValue Lo = DAG.getZeroExtendInReg(Op0, dl, MVT::i32);
SDValue Hi = DAG.getNode(ISD::SRL, dl, MVT::i64, Op0,
DAG.getConstant(32, MVT::i64));
SDValue LoOr = DAG.getNode(ISD::OR, dl, MVT::i64, Lo, TwoP52);
SDValue HiOr = DAG.getNode(ISD::OR, dl, MVT::i64, Hi, TwoP84);
SDValue LoFlt = DAG.getNode(ISD::BIT_CONVERT, dl, MVT::f64, LoOr);
SDValue HiFlt = DAG.getNode(ISD::BIT_CONVERT, dl, MVT::f64, HiOr);
SDValue HiSub = DAG.getNode(ISD::FSUB, dl, MVT::f64, HiFlt, TwoP84PlusTwoP52);
return DAG.getNode(ISD::FADD, dl, MVT::f64, LoFlt, HiSub);
}
if (Op0.getValueType() == MVT::i64 && DestVT == MVT::f32) {
EVT SHVT = TLI.getShiftAmountTy();
SDValue And = DAG.getNode(ISD::AND, dl, MVT::i64, Op0,
DAG.getConstant(UINT64_C(0xfffffffffffff800), MVT::i64));
SDValue Or = DAG.getNode(ISD::OR, dl, MVT::i64, And,
DAG.getConstant(UINT64_C(0x800), MVT::i64));
SDValue And2 = DAG.getNode(ISD::AND, dl, MVT::i64, Op0,
DAG.getConstant(UINT64_C(0x7ff), MVT::i64));
SDValue Ne = DAG.getSetCC(dl, TLI.getSetCCResultType(MVT::i64),
And2, DAG.getConstant(UINT64_C(0), MVT::i64), ISD::SETNE);
SDValue Sel = DAG.getNode(ISD::SELECT, dl, MVT::i64, Ne, Or, Op0);
SDValue Ge = DAG.getSetCC(dl, TLI.getSetCCResultType(MVT::i64),
Op0, DAG.getConstant(UINT64_C(0x0020000000000000), MVT::i64),
ISD::SETUGE);
SDValue Sel2 = DAG.getNode(ISD::SELECT, dl, MVT::i64, Ge, Sel, Op0);
SDValue Sh = DAG.getNode(ISD::SRL, dl, MVT::i64, Sel2,
DAG.getConstant(32, SHVT));
SDValue Trunc = DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, Sh);
SDValue Fcvt = DAG.getNode(ISD::UINT_TO_FP, dl, MVT::f64, Trunc);
SDValue TwoP32 =
DAG.getConstantFP(BitsToDouble(UINT64_C(0x41f0000000000000)), MVT::f64);
SDValue Fmul = DAG.getNode(ISD::FMUL, dl, MVT::f64, TwoP32, Fcvt);
SDValue Lo = DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, Sel2);
SDValue Fcvt2 = DAG.getNode(ISD::UINT_TO_FP, dl, MVT::f64, Lo);
SDValue Fadd = DAG.getNode(ISD::FADD, dl, MVT::f64, Fmul, Fcvt2);
return DAG.getNode(ISD::FP_ROUND, dl, MVT::f32, Fadd,
DAG.getIntPtrConstant(0));
}
SDValue Tmp1 = DAG.getNode(ISD::SINT_TO_FP, dl, DestVT, Op0);
SDValue SignSet = DAG.getSetCC(dl, TLI.getSetCCResultType(Op0.getValueType()),
Op0, DAG.getConstant(0, Op0.getValueType()),
ISD::SETLT);
SDValue Zero = DAG.getIntPtrConstant(0), Four = DAG.getIntPtrConstant(4);
SDValue CstOffset = DAG.getNode(ISD::SELECT, dl, Zero.getValueType(),
SignSet, Four, Zero);
uint64_t FF;
switch (Op0.getValueType().getSimpleVT().SimpleTy) {
default: llvm_unreachable("Unsupported integer type!");
case MVT::i8 : FF = 0x43800000ULL; break; case MVT::i16: FF = 0x47800000ULL; break; case MVT::i32: FF = 0x4F800000ULL; break; case MVT::i64: FF = 0x5F800000ULL; break; }
if (TLI.isLittleEndian()) FF <<= 32;
Constant *FudgeFactor = ConstantInt::get(
Type::getInt64Ty(*DAG.getContext()), FF);
SDValue CPIdx = DAG.getConstantPool(FudgeFactor, TLI.getPointerTy());
unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment();
CPIdx = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), CPIdx, CstOffset);
Alignment = std::min(Alignment, 4u);
SDValue FudgeInReg;
if (DestVT == MVT::f32)
FudgeInReg = DAG.getLoad(MVT::f32, dl, DAG.getEntryNode(), CPIdx,
PseudoSourceValue::getConstantPool(), 0,
false, false, Alignment);
else {
FudgeInReg =
LegalizeOp(DAG.getExtLoad(ISD::EXTLOAD, dl, DestVT,
DAG.getEntryNode(), CPIdx,
PseudoSourceValue::getConstantPool(), 0,
MVT::f32, false, false, Alignment));
}
return DAG.getNode(ISD::FADD, dl, DestVT, Tmp1, FudgeInReg);
}
SDValue SelectionDAGLegalize::PromoteLegalINT_TO_FP(SDValue LegalOp,
EVT DestVT,
bool isSigned,
DebugLoc dl) {
EVT NewInTy = LegalOp.getValueType();
unsigned OpToUse = 0;
while (1) {
NewInTy = (MVT::SimpleValueType)(NewInTy.getSimpleVT().SimpleTy+1);
assert(NewInTy.isInteger() && "Ran out of possibilities!");
if (TLI.isOperationLegalOrCustom(ISD::SINT_TO_FP, NewInTy)) {
OpToUse = ISD::SINT_TO_FP;
break;
}
if (isSigned) continue;
if (TLI.isOperationLegalOrCustom(ISD::UINT_TO_FP, NewInTy)) {
OpToUse = ISD::UINT_TO_FP;
break;
}
}
return DAG.getNode(OpToUse, dl, DestVT,
DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND,
dl, NewInTy, LegalOp));
}
SDValue SelectionDAGLegalize::PromoteLegalFP_TO_INT(SDValue LegalOp,
EVT DestVT,
bool isSigned,
DebugLoc dl) {
EVT NewOutTy = DestVT;
unsigned OpToUse = 0;
while (1) {
NewOutTy = (MVT::SimpleValueType)(NewOutTy.getSimpleVT().SimpleTy+1);
assert(NewOutTy.isInteger() && "Ran out of possibilities!");
if (TLI.isOperationLegalOrCustom(ISD::FP_TO_SINT, NewOutTy)) {
OpToUse = ISD::FP_TO_SINT;
break;
}
if (TLI.isOperationLegalOrCustom(ISD::FP_TO_UINT, NewOutTy)) {
OpToUse = ISD::FP_TO_UINT;
break;
}
}
SDValue Operation = DAG.getNode(OpToUse, dl, NewOutTy, LegalOp);
return DAG.getNode(ISD::TRUNCATE, dl, DestVT, Operation);
}
SDValue SelectionDAGLegalize::ExpandBSWAP(SDValue Op, DebugLoc dl) {
EVT VT = Op.getValueType();
EVT SHVT = TLI.getShiftAmountTy();
SDValue Tmp1, Tmp2, Tmp3, Tmp4, Tmp5, Tmp6, Tmp7, Tmp8;
switch (VT.getSimpleVT().SimpleTy) {
default: llvm_unreachable("Unhandled Expand type in BSWAP!");
case MVT::i16:
Tmp2 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT));
Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT));
return DAG.getNode(ISD::OR, dl, VT, Tmp1, Tmp2);
case MVT::i32:
Tmp4 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT));
Tmp3 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT));
Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT));
Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT));
Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(0xFF0000, VT));
Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(0xFF00, VT));
Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3);
Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1);
return DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2);
case MVT::i64:
Tmp8 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(56, SHVT));
Tmp7 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(40, SHVT));
Tmp6 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT));
Tmp5 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT));
Tmp4 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT));
Tmp3 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT));
Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(40, SHVT));
Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(56, SHVT));
Tmp7 = DAG.getNode(ISD::AND, dl, VT, Tmp7, DAG.getConstant(255ULL<<48, VT));
Tmp6 = DAG.getNode(ISD::AND, dl, VT, Tmp6, DAG.getConstant(255ULL<<40, VT));
Tmp5 = DAG.getNode(ISD::AND, dl, VT, Tmp5, DAG.getConstant(255ULL<<32, VT));
Tmp4 = DAG.getNode(ISD::AND, dl, VT, Tmp4, DAG.getConstant(255ULL<<24, VT));
Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(255ULL<<16, VT));
Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(255ULL<<8 , VT));
Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp7);
Tmp6 = DAG.getNode(ISD::OR, dl, VT, Tmp6, Tmp5);
Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3);
Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1);
Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp6);
Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2);
return DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp4);
}
}
SDValue SelectionDAGLegalize::ExpandBitCount(unsigned Opc, SDValue Op,
DebugLoc dl) {
switch (Opc) {
default: llvm_unreachable("Cannot expand this yet!");
case ISD::CTPOP: {
static const uint64_t mask[6] = {
0x5555555555555555ULL, 0x3333333333333333ULL,
0x0F0F0F0F0F0F0F0FULL, 0x00FF00FF00FF00FFULL,
0x0000FFFF0000FFFFULL, 0x00000000FFFFFFFFULL
};
EVT VT = Op.getValueType();
EVT ShVT = TLI.getShiftAmountTy();
unsigned len = VT.getSizeInBits();
for (unsigned i = 0; (1U << i) <= (len / 2); ++i) {
unsigned EltSize = VT.isVector() ?
VT.getVectorElementType().getSizeInBits() : len;
SDValue Tmp2 = DAG.getConstant(APInt(EltSize, mask[i]), VT);
SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT);
Op = DAG.getNode(ISD::ADD, dl, VT,
DAG.getNode(ISD::AND, dl, VT, Op, Tmp2),
DAG.getNode(ISD::AND, dl, VT,
DAG.getNode(ISD::SRL, dl, VT, Op, Tmp3),
Tmp2));
}
return Op;
}
case ISD::CTLZ: {
EVT VT = Op.getValueType();
EVT ShVT = TLI.getShiftAmountTy();
unsigned len = VT.getSizeInBits();
for (unsigned i = 0; (1U << i) <= (len / 2); ++i) {
SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT);
Op = DAG.getNode(ISD::OR, dl, VT, Op,
DAG.getNode(ISD::SRL, dl, VT, Op, Tmp3));
}
Op = DAG.getNOT(dl, Op, VT);
return DAG.getNode(ISD::CTPOP, dl, VT, Op);
}
case ISD::CTTZ: {
EVT VT = Op.getValueType();
SDValue Tmp3 = DAG.getNode(ISD::AND, dl, VT,
DAG.getNOT(dl, Op, VT),
DAG.getNode(ISD::SUB, dl, VT, Op,
DAG.getConstant(1, VT)));
if (!TLI.isOperationLegalOrCustom(ISD::CTPOP, VT) &&
TLI.isOperationLegalOrCustom(ISD::CTLZ, VT))
return DAG.getNode(ISD::SUB, dl, VT,
DAG.getConstant(VT.getSizeInBits(), VT),
DAG.getNode(ISD::CTLZ, dl, VT, Tmp3));
return DAG.getNode(ISD::CTPOP, dl, VT, Tmp3);
}
}
}
void SelectionDAGLegalize::ExpandNode(SDNode *Node,
SmallVectorImpl<SDValue> &Results) {
DebugLoc dl = Node->getDebugLoc();
SDValue Tmp1, Tmp2, Tmp3, Tmp4;
switch (Node->getOpcode()) {
case ISD::CTPOP:
case ISD::CTLZ:
case ISD::CTTZ:
Tmp1 = ExpandBitCount(Node->getOpcode(), Node->getOperand(0), dl);
Results.push_back(Tmp1);
break;
case ISD::BSWAP:
Results.push_back(ExpandBSWAP(Node->getOperand(0), dl));
break;
case ISD::FRAMEADDR:
case ISD::RETURNADDR:
case ISD::FRAME_TO_ARGS_OFFSET:
Results.push_back(DAG.getConstant(0, Node->getValueType(0)));
break;
case ISD::FLT_ROUNDS_:
Results.push_back(DAG.getConstant(1, Node->getValueType(0)));
break;
case ISD::EH_RETURN:
case ISD::EH_LABEL:
case ISD::PREFETCH:
case ISD::MEMBARRIER:
case ISD::VAEND:
Results.push_back(Node->getOperand(0));
break;
case ISD::DYNAMIC_STACKALLOC:
ExpandDYNAMIC_STACKALLOC(Node, Results);
break;
case ISD::MERGE_VALUES:
for (unsigned i = 0; i < Node->getNumValues(); i++)
Results.push_back(Node->getOperand(i));
break;
case ISD::UNDEF: {
EVT VT = Node->getValueType(0);
if (VT.isInteger())
Results.push_back(DAG.getConstant(0, VT));
else if (VT.isFloatingPoint())
Results.push_back(DAG.getConstantFP(0, VT));
else
llvm_unreachable("Unknown value type!");
break;
}
case ISD::TRAP: {
TargetLowering::ArgListTy Args;
std::pair<SDValue, SDValue> CallResult =
TLI.LowerCallTo(Node->getOperand(0), Type::getVoidTy(*DAG.getContext()),
false, false, false, false, 0, CallingConv::C, false,
true,
DAG.getExternalSymbol("abort", TLI.getPointerTy()),
Args, DAG, dl);
Results.push_back(CallResult.second);
break;
}
case ISD::FP_ROUND:
case ISD::BIT_CONVERT:
Tmp1 = EmitStackConvert(Node->getOperand(0), Node->getValueType(0),
Node->getValueType(0), dl);
Results.push_back(Tmp1);
break;
case ISD::FP_EXTEND:
Tmp1 = EmitStackConvert(Node->getOperand(0),
Node->getOperand(0).getValueType(),
Node->getValueType(0), dl);
Results.push_back(Tmp1);
break;
case ISD::SIGN_EXTEND_INREG: {
EVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT();
EVT VT = Node->getValueType(0);
EVT ShiftAmountTy = TLI.getShiftAmountTy();
if (VT.isVector())
ShiftAmountTy = VT;
unsigned BitsDiff = VT.getScalarType().getSizeInBits() -
ExtraVT.getScalarType().getSizeInBits();
SDValue ShiftCst = DAG.getConstant(BitsDiff, ShiftAmountTy);
Tmp1 = DAG.getNode(ISD::SHL, dl, Node->getValueType(0),
Node->getOperand(0), ShiftCst);
Tmp1 = DAG.getNode(ISD::SRA, dl, Node->getValueType(0), Tmp1, ShiftCst);
Results.push_back(Tmp1);
break;
}
case ISD::FP_ROUND_INREG: {
EVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT();
Tmp1 = EmitStackConvert(Node->getOperand(0), ExtraVT,
Node->getValueType(0), dl);
Results.push_back(Tmp1);
break;
}
case ISD::SINT_TO_FP:
case ISD::UINT_TO_FP:
Tmp1 = ExpandLegalINT_TO_FP(Node->getOpcode() == ISD::SINT_TO_FP,
Node->getOperand(0), Node->getValueType(0), dl);
Results.push_back(Tmp1);
break;
case ISD::FP_TO_UINT: {
SDValue True, False;
EVT VT = Node->getOperand(0).getValueType();
EVT NVT = Node->getValueType(0);
const uint64_t zero[] = {0, 0};
APFloat apf = APFloat(APInt(VT.getSizeInBits(), 2, zero));
APInt x = APInt::getSignBit(NVT.getSizeInBits());
(void)apf.convertFromAPInt(x, false, APFloat::rmNearestTiesToEven);
Tmp1 = DAG.getConstantFP(apf, VT);
Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(VT),
Node->getOperand(0),
Tmp1, ISD::SETLT);
True = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, Node->getOperand(0));
False = DAG.getNode(ISD::FP_TO_SINT, dl, NVT,
DAG.getNode(ISD::FSUB, dl, VT,
Node->getOperand(0), Tmp1));
False = DAG.getNode(ISD::XOR, dl, NVT, False,
DAG.getConstant(x, NVT));
Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, True, False);
Results.push_back(Tmp1);
break;
}
case ISD::VAARG: {
const Value *V = cast<SrcValueSDNode>(Node->getOperand(2))->getValue();
EVT VT = Node->getValueType(0);
Tmp1 = Node->getOperand(0);
Tmp2 = Node->getOperand(1);
SDValue VAList = DAG.getLoad(TLI.getPointerTy(), dl, Tmp1, Tmp2, V, 0,
false, false, 0);
Tmp3 = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), VAList,
DAG.getConstant(TLI.getTargetData()->
getTypeAllocSize(VT.getTypeForEVT(*DAG.getContext())),
TLI.getPointerTy()));
Tmp3 = DAG.getStore(VAList.getValue(1), dl, Tmp3, Tmp2, V, 0,
false, false, 0);
Results.push_back(DAG.getLoad(VT, dl, Tmp3, VAList, NULL, 0,
false, false, 0));
Results.push_back(Results[0].getValue(1));
break;
}
case ISD::VACOPY: {
const Value *VD = cast<SrcValueSDNode>(Node->getOperand(3))->getValue();
const Value *VS = cast<SrcValueSDNode>(Node->getOperand(4))->getValue();
Tmp1 = DAG.getLoad(TLI.getPointerTy(), dl, Node->getOperand(0),
Node->getOperand(2), VS, 0, false, false, 0);
Tmp1 = DAG.getStore(Tmp1.getValue(1), dl, Tmp1, Node->getOperand(1), VD, 0,
false, false, 0);
Results.push_back(Tmp1);
break;
}
case ISD::EXTRACT_VECTOR_ELT:
if (Node->getOperand(0).getValueType().getVectorNumElements() == 1)
Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, Node->getValueType(0),
Node->getOperand(0));
else
Tmp1 = ExpandExtractFromVectorThroughStack(SDValue(Node, 0));
Results.push_back(Tmp1);
break;
case ISD::EXTRACT_SUBVECTOR:
Results.push_back(ExpandExtractFromVectorThroughStack(SDValue(Node, 0)));
break;
case ISD::CONCAT_VECTORS: {
Results.push_back(ExpandVectorBuildThroughStack(Node));
break;
}
case ISD::SCALAR_TO_VECTOR:
Results.push_back(ExpandSCALAR_TO_VECTOR(Node));
break;
case ISD::INSERT_VECTOR_ELT:
Results.push_back(ExpandINSERT_VECTOR_ELT(Node->getOperand(0),
Node->getOperand(1),
Node->getOperand(2), dl));
break;
case ISD::VECTOR_SHUFFLE: {
SmallVector<int, 8> Mask;
cast<ShuffleVectorSDNode>(Node)->getMask(Mask);
EVT VT = Node->getValueType(0);
EVT EltVT = VT.getVectorElementType();
unsigned NumElems = VT.getVectorNumElements();
SmallVector<SDValue, 8> Ops;
for (unsigned i = 0; i != NumElems; ++i) {
if (Mask[i] < 0) {
Ops.push_back(DAG.getUNDEF(EltVT));
continue;
}
unsigned Idx = Mask[i];
if (Idx < NumElems)
Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT,
Node->getOperand(0),
DAG.getIntPtrConstant(Idx)));
else
Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT,
Node->getOperand(1),
DAG.getIntPtrConstant(Idx - NumElems)));
}
Tmp1 = DAG.getNode(ISD::BUILD_VECTOR, dl, VT, &Ops[0], Ops.size());
Results.push_back(Tmp1);
break;
}
case ISD::EXTRACT_ELEMENT: {
EVT OpTy = Node->getOperand(0).getValueType();
if (cast<ConstantSDNode>(Node->getOperand(1))->getZExtValue()) {
Tmp1 = DAG.getNode(ISD::SRL, dl, OpTy, Node->getOperand(0),
DAG.getConstant(OpTy.getSizeInBits()/2,
TLI.getShiftAmountTy()));
Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), Tmp1);
} else {
Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0),
Node->getOperand(0));
}
Results.push_back(Tmp1);
break;
}
case ISD::STACKSAVE:
if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) {
Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, SP,
Node->getValueType(0)));
Results.push_back(Results[0].getValue(1));
} else {
Results.push_back(DAG.getUNDEF(Node->getValueType(0)));
Results.push_back(Node->getOperand(0));
}
break;
case ISD::STACKRESTORE:
if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) {
Results.push_back(DAG.getCopyToReg(Node->getOperand(0), dl, SP,
Node->getOperand(1)));
} else {
Results.push_back(Node->getOperand(0));
}
break;
case ISD::FCOPYSIGN:
Results.push_back(ExpandFCOPYSIGN(Node));
break;
case ISD::FNEG:
Tmp1 = DAG.getConstantFP(-0.0, Node->getValueType(0));
Tmp1 = DAG.getNode(ISD::FSUB, dl, Node->getValueType(0), Tmp1,
Node->getOperand(0));
Results.push_back(Tmp1);
break;
case ISD::FABS: {
EVT VT = Node->getValueType(0);
Tmp1 = Node->getOperand(0);
Tmp2 = DAG.getConstantFP(0.0, VT);
Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(Tmp1.getValueType()),
Tmp1, Tmp2, ISD::SETUGT);
Tmp3 = DAG.getNode(ISD::FNEG, dl, VT, Tmp1);
Tmp1 = DAG.getNode(ISD::SELECT, dl, VT, Tmp2, Tmp1, Tmp3);
Results.push_back(Tmp1);
break;
}
case ISD::FSQRT:
Results.push_back(ExpandFPLibCall(Node, RTLIB::SQRT_F32, RTLIB::SQRT_F64,
RTLIB::SQRT_F80, RTLIB::SQRT_PPCF128));
break;
case ISD::FSIN:
Results.push_back(ExpandFPLibCall(Node, RTLIB::SIN_F32, RTLIB::SIN_F64,
RTLIB::SIN_F80, RTLIB::SIN_PPCF128));
break;
case ISD::FCOS:
Results.push_back(ExpandFPLibCall(Node, RTLIB::COS_F32, RTLIB::COS_F64,
RTLIB::COS_F80, RTLIB::COS_PPCF128));
break;
case ISD::FLOG:
Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG_F32, RTLIB::LOG_F64,
RTLIB::LOG_F80, RTLIB::LOG_PPCF128));
break;
case ISD::FLOG2:
Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG2_F32, RTLIB::LOG2_F64,
RTLIB::LOG2_F80, RTLIB::LOG2_PPCF128));
break;
case ISD::FLOG10:
Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG10_F32, RTLIB::LOG10_F64,
RTLIB::LOG10_F80, RTLIB::LOG10_PPCF128));
break;
case ISD::FEXP:
Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP_F32, RTLIB::EXP_F64,
RTLIB::EXP_F80, RTLIB::EXP_PPCF128));
break;
case ISD::FEXP2:
Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP2_F32, RTLIB::EXP2_F64,
RTLIB::EXP2_F80, RTLIB::EXP2_PPCF128));
break;
case ISD::FTRUNC:
Results.push_back(ExpandFPLibCall(Node, RTLIB::TRUNC_F32, RTLIB::TRUNC_F64,
RTLIB::TRUNC_F80, RTLIB::TRUNC_PPCF128));
break;
case ISD::FFLOOR:
Results.push_back(ExpandFPLibCall(Node, RTLIB::FLOOR_F32, RTLIB::FLOOR_F64,
RTLIB::FLOOR_F80, RTLIB::FLOOR_PPCF128));
break;
case ISD::FCEIL:
Results.push_back(ExpandFPLibCall(Node, RTLIB::CEIL_F32, RTLIB::CEIL_F64,
RTLIB::CEIL_F80, RTLIB::CEIL_PPCF128));
break;
case ISD::FRINT:
Results.push_back(ExpandFPLibCall(Node, RTLIB::RINT_F32, RTLIB::RINT_F64,
RTLIB::RINT_F80, RTLIB::RINT_PPCF128));
break;
case ISD::FNEARBYINT:
Results.push_back(ExpandFPLibCall(Node, RTLIB::NEARBYINT_F32,
RTLIB::NEARBYINT_F64,
RTLIB::NEARBYINT_F80,
RTLIB::NEARBYINT_PPCF128));
break;
case ISD::FPOWI:
Results.push_back(ExpandFPLibCall(Node, RTLIB::POWI_F32, RTLIB::POWI_F64,
RTLIB::POWI_F80, RTLIB::POWI_PPCF128));
break;
case ISD::FPOW:
Results.push_back(ExpandFPLibCall(Node, RTLIB::POW_F32, RTLIB::POW_F64,
RTLIB::POW_F80, RTLIB::POW_PPCF128));
break;
case ISD::FDIV:
Results.push_back(ExpandFPLibCall(Node, RTLIB::DIV_F32, RTLIB::DIV_F64,
RTLIB::DIV_F80, RTLIB::DIV_PPCF128));
break;
case ISD::FREM:
Results.push_back(ExpandFPLibCall(Node, RTLIB::REM_F32, RTLIB::REM_F64,
RTLIB::REM_F80, RTLIB::REM_PPCF128));
break;
case ISD::FP16_TO_FP32:
Results.push_back(ExpandLibCall(RTLIB::FPEXT_F16_F32, Node, false));
break;
case ISD::FP32_TO_FP16:
Results.push_back(ExpandLibCall(RTLIB::FPROUND_F32_F16, Node, false));
break;
case ISD::ConstantFP: {
ConstantFPSDNode *CFP = cast<ConstantFPSDNode>(Node);
if (TLI.isFPImmLegal(CFP->getValueAPF(), Node->getValueType(0)))
Results.push_back(SDValue(Node, 0));
else
Results.push_back(ExpandConstantFP(CFP, true, DAG, TLI));
break;
}
case ISD::EHSELECTION: {
unsigned Reg = TLI.getExceptionSelectorRegister();
assert(Reg && "Can't expand to unknown register!");
Results.push_back(DAG.getCopyFromReg(Node->getOperand(1), dl, Reg,
Node->getValueType(0)));
Results.push_back(Results[0].getValue(1));
break;
}
case ISD::EXCEPTIONADDR: {
unsigned Reg = TLI.getExceptionAddressRegister();
assert(Reg && "Can't expand to unknown register!");
Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, Reg,
Node->getValueType(0)));
Results.push_back(Results[0].getValue(1));
break;
}
case ISD::SUB: {
EVT VT = Node->getValueType(0);
assert(TLI.isOperationLegalOrCustom(ISD::ADD, VT) &&
TLI.isOperationLegalOrCustom(ISD::XOR, VT) &&
"Don't know how to expand this subtraction!");
Tmp1 = DAG.getNode(ISD::XOR, dl, VT, Node->getOperand(1),
DAG.getConstant(APInt::getAllOnesValue(VT.getSizeInBits()), VT));
Tmp1 = DAG.getNode(ISD::ADD, dl, VT, Tmp2, DAG.getConstant(1, VT));
Results.push_back(DAG.getNode(ISD::ADD, dl, VT, Node->getOperand(0), Tmp1));
break;
}
case ISD::UREM:
case ISD::SREM: {
EVT VT = Node->getValueType(0);
SDVTList VTs = DAG.getVTList(VT, VT);
bool isSigned = Node->getOpcode() == ISD::SREM;
unsigned DivOpc = isSigned ? ISD::SDIV : ISD::UDIV;
unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM;
Tmp2 = Node->getOperand(0);
Tmp3 = Node->getOperand(1);
if (TLI.isOperationLegalOrCustom(DivRemOpc, VT)) {
Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Tmp2, Tmp3).getValue(1);
} else if (TLI.isOperationLegalOrCustom(DivOpc, VT)) {
Tmp1 = DAG.getNode(DivOpc, dl, VT, Tmp2, Tmp3);
Tmp1 = DAG.getNode(ISD::MUL, dl, VT, Tmp1, Tmp3);
Tmp1 = DAG.getNode(ISD::SUB, dl, VT, Tmp2, Tmp1);
} else if (isSigned) {
Tmp1 = ExpandIntLibCall(Node, true,
RTLIB::SREM_I8,
RTLIB::SREM_I16, RTLIB::SREM_I32,
RTLIB::SREM_I64, RTLIB::SREM_I128);
} else {
Tmp1 = ExpandIntLibCall(Node, false,
RTLIB::UREM_I8,
RTLIB::UREM_I16, RTLIB::UREM_I32,
RTLIB::UREM_I64, RTLIB::UREM_I128);
}
Results.push_back(Tmp1);
break;
}
case ISD::UDIV:
case ISD::SDIV: {
bool isSigned = Node->getOpcode() == ISD::SDIV;
unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM;
EVT VT = Node->getValueType(0);
SDVTList VTs = DAG.getVTList(VT, VT);
if (TLI.isOperationLegalOrCustom(DivRemOpc, VT))
Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Node->getOperand(0),
Node->getOperand(1));
else if (isSigned)
Tmp1 = ExpandIntLibCall(Node, true,
RTLIB::SDIV_I8,
RTLIB::SDIV_I16, RTLIB::SDIV_I32,
RTLIB::SDIV_I64, RTLIB::SDIV_I128);
else
Tmp1 = ExpandIntLibCall(Node, false,
RTLIB::UDIV_I8,
RTLIB::UDIV_I16, RTLIB::UDIV_I32,
RTLIB::UDIV_I64, RTLIB::UDIV_I128);
Results.push_back(Tmp1);
break;
}
case ISD::MULHU:
case ISD::MULHS: {
unsigned ExpandOpcode = Node->getOpcode() == ISD::MULHU ? ISD::UMUL_LOHI :
ISD::SMUL_LOHI;
EVT VT = Node->getValueType(0);
SDVTList VTs = DAG.getVTList(VT, VT);
assert(TLI.isOperationLegalOrCustom(ExpandOpcode, VT) &&
"If this wasn't legal, it shouldn't have been created!");
Tmp1 = DAG.getNode(ExpandOpcode, dl, VTs, Node->getOperand(0),
Node->getOperand(1));
Results.push_back(Tmp1.getValue(1));
break;
}
case ISD::MUL: {
EVT VT = Node->getValueType(0);
SDVTList VTs = DAG.getVTList(VT, VT);
bool HasSMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::SMUL_LOHI, VT);
bool HasUMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::UMUL_LOHI, VT);
bool HasMULHS = TLI.isOperationLegalOrCustom(ISD::MULHS, VT);
bool HasMULHU = TLI.isOperationLegalOrCustom(ISD::MULHU, VT);
unsigned OpToUse = 0;
if (HasSMUL_LOHI && !HasMULHS) {
OpToUse = ISD::SMUL_LOHI;
} else if (HasUMUL_LOHI && !HasMULHU) {
OpToUse = ISD::UMUL_LOHI;
} else if (HasSMUL_LOHI) {
OpToUse = ISD::SMUL_LOHI;
} else if (HasUMUL_LOHI) {
OpToUse = ISD::UMUL_LOHI;
}
if (OpToUse) {
Results.push_back(DAG.getNode(OpToUse, dl, VTs, Node->getOperand(0),
Node->getOperand(1)));
break;
}
Tmp1 = ExpandIntLibCall(Node, false,
RTLIB::MUL_I8,
RTLIB::MUL_I16, RTLIB::MUL_I32,
RTLIB::MUL_I64, RTLIB::MUL_I128);
Results.push_back(Tmp1);
break;
}
case ISD::SADDO:
case ISD::SSUBO: {
SDValue LHS = Node->getOperand(0);
SDValue RHS = Node->getOperand(1);
SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::SADDO ?
ISD::ADD : ISD::SUB, dl, LHS.getValueType(),
LHS, RHS);
Results.push_back(Sum);
EVT OType = Node->getValueType(1);
SDValue Zero = DAG.getConstant(0, LHS.getValueType());
SDValue LHSSign = DAG.getSetCC(dl, OType, LHS, Zero, ISD::SETGE);
SDValue RHSSign = DAG.getSetCC(dl, OType, RHS, Zero, ISD::SETGE);
SDValue SignsMatch = DAG.getSetCC(dl, OType, LHSSign, RHSSign,
Node->getOpcode() == ISD::SADDO ?
ISD::SETEQ : ISD::SETNE);
SDValue SumSign = DAG.getSetCC(dl, OType, Sum, Zero, ISD::SETGE);
SDValue SumSignNE = DAG.getSetCC(dl, OType, LHSSign, SumSign, ISD::SETNE);
SDValue Cmp = DAG.getNode(ISD::AND, dl, OType, SignsMatch, SumSignNE);
Results.push_back(Cmp);
break;
}
case ISD::UADDO:
case ISD::USUBO: {
SDValue LHS = Node->getOperand(0);
SDValue RHS = Node->getOperand(1);
SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::UADDO ?
ISD::ADD : ISD::SUB, dl, LHS.getValueType(),
LHS, RHS);
Results.push_back(Sum);
Results.push_back(DAG.getSetCC(dl, Node->getValueType(1), Sum, LHS,
Node->getOpcode () == ISD::UADDO ?
ISD::SETULT : ISD::SETUGT));
break;
}
case ISD::UMULO:
case ISD::SMULO: {
EVT VT = Node->getValueType(0);
SDValue LHS = Node->getOperand(0);
SDValue RHS = Node->getOperand(1);
SDValue BottomHalf;
SDValue TopHalf;
static const unsigned Ops[2][3] =
{ { ISD::MULHU, ISD::UMUL_LOHI, ISD::ZERO_EXTEND },
{ ISD::MULHS, ISD::SMUL_LOHI, ISD::SIGN_EXTEND }};
bool isSigned = Node->getOpcode() == ISD::SMULO;
if (TLI.isOperationLegalOrCustom(Ops[isSigned][0], VT)) {
BottomHalf = DAG.getNode(ISD::MUL, dl, VT, LHS, RHS);
TopHalf = DAG.getNode(Ops[isSigned][0], dl, VT, LHS, RHS);
} else if (TLI.isOperationLegalOrCustom(Ops[isSigned][1], VT)) {
BottomHalf = DAG.getNode(Ops[isSigned][1], dl, DAG.getVTList(VT, VT), LHS,
RHS);
TopHalf = BottomHalf.getValue(1);
} else if (TLI.isTypeLegal(EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits() * 2))) {
EVT WideVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits() * 2);
LHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, LHS);
RHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, RHS);
Tmp1 = DAG.getNode(ISD::MUL, dl, WideVT, LHS, RHS);
BottomHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1,
DAG.getIntPtrConstant(0));
TopHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1,
DAG.getIntPtrConstant(1));
} else {
llvm_unreachable("Don't know how to expand this operation yet!");
}
if (isSigned) {
Tmp1 = DAG.getConstant(VT.getSizeInBits() - 1, TLI.getShiftAmountTy());
Tmp1 = DAG.getNode(ISD::SRA, dl, VT, BottomHalf, Tmp1);
TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, Tmp1,
ISD::SETNE);
} else {
TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf,
DAG.getConstant(0, VT), ISD::SETNE);
}
Results.push_back(BottomHalf);
Results.push_back(TopHalf);
break;
}
case ISD::BUILD_PAIR: {
EVT PairTy = Node->getValueType(0);
Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, PairTy, Node->getOperand(0));
Tmp2 = DAG.getNode(ISD::ANY_EXTEND, dl, PairTy, Node->getOperand(1));
Tmp2 = DAG.getNode(ISD::SHL, dl, PairTy, Tmp2,
DAG.getConstant(PairTy.getSizeInBits()/2,
TLI.getShiftAmountTy()));
Results.push_back(DAG.getNode(ISD::OR, dl, PairTy, Tmp1, Tmp2));
break;
}
case ISD::SELECT:
Tmp1 = Node->getOperand(0);
Tmp2 = Node->getOperand(1);
Tmp3 = Node->getOperand(2);
if (Tmp1.getOpcode() == ISD::SETCC) {
Tmp1 = DAG.getSelectCC(dl, Tmp1.getOperand(0), Tmp1.getOperand(1),
Tmp2, Tmp3,
cast<CondCodeSDNode>(Tmp1.getOperand(2))->get());
} else {
Tmp1 = DAG.getSelectCC(dl, Tmp1,
DAG.getConstant(0, Tmp1.getValueType()),
Tmp2, Tmp3, ISD::SETNE);
}
Results.push_back(Tmp1);
break;
case ISD::BR_JT: {
SDValue Chain = Node->getOperand(0);
SDValue Table = Node->getOperand(1);
SDValue Index = Node->getOperand(2);
EVT PTy = TLI.getPointerTy();
const TargetData &TD = *TLI.getTargetData();
unsigned EntrySize =
DAG.getMachineFunction().getJumpTableInfo()->getEntrySize(TD);
Index = DAG.getNode(ISD::MUL, dl, PTy,
Index, DAG.getConstant(EntrySize, PTy));
SDValue Addr = DAG.getNode(ISD::ADD, dl, PTy, Index, Table);
EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), EntrySize * 8);
SDValue LD = DAG.getExtLoad(ISD::SEXTLOAD, dl, PTy, Chain, Addr,
PseudoSourceValue::getJumpTable(), 0, MemVT,
false, false, 0);
Addr = LD;
if (TLI.getTargetMachine().getRelocationModel() == Reloc::PIC_) {
Addr = DAG.getNode(ISD::ADD, dl, PTy, Addr,
TLI.getPICJumpTableRelocBase(Table, DAG));
}
Tmp1 = DAG.getNode(ISD::BRIND, dl, MVT::Other, LD.getValue(1), Addr);
Results.push_back(Tmp1);
break;
}
case ISD::BRCOND:
Tmp1 = Node->getOperand(0);
Tmp2 = Node->getOperand(1);
if (Tmp2.getOpcode() == ISD::SETCC) {
Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other,
Tmp1, Tmp2.getOperand(2),
Tmp2.getOperand(0), Tmp2.getOperand(1),
Node->getOperand(2));
} else {
Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, Tmp1,
DAG.getCondCode(ISD::SETNE), Tmp2,
DAG.getConstant(0, Tmp2.getValueType()),
Node->getOperand(2));
}
Results.push_back(Tmp1);
break;
case ISD::SETCC: {
Tmp1 = Node->getOperand(0);
Tmp2 = Node->getOperand(1);
Tmp3 = Node->getOperand(2);
LegalizeSetCCCondCode(Node->getValueType(0), Tmp1, Tmp2, Tmp3, dl);
if (Tmp2.getNode() == 0) {
Results.push_back(Tmp1);
break;
}
EVT VT = Node->getValueType(0);
Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, VT, Tmp1, Tmp2,
DAG.getConstant(1, VT), DAG.getConstant(0, VT), Tmp3);
Results.push_back(Tmp1);
break;
}
case ISD::SELECT_CC: {
Tmp1 = Node->getOperand(0); Tmp2 = Node->getOperand(1); Tmp3 = Node->getOperand(2); Tmp4 = Node->getOperand(3); SDValue CC = Node->getOperand(4);
LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp1.getValueType()),
Tmp1, Tmp2, CC, dl);
assert(!Tmp2.getNode() && "Can't legalize SELECT_CC with legal condition!");
Tmp2 = DAG.getConstant(0, Tmp1.getValueType());
CC = DAG.getCondCode(ISD::SETNE);
Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, Node->getValueType(0), Tmp1, Tmp2,
Tmp3, Tmp4, CC);
Results.push_back(Tmp1);
break;
}
case ISD::BR_CC: {
Tmp1 = Node->getOperand(0); Tmp2 = Node->getOperand(2); Tmp3 = Node->getOperand(3); Tmp4 = Node->getOperand(1);
LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp2.getValueType()),
Tmp2, Tmp3, Tmp4, dl);
LastCALLSEQ_END = DAG.getEntryNode();
assert(!Tmp3.getNode() && "Can't legalize BR_CC with legal condition!");
Tmp3 = DAG.getConstant(0, Tmp2.getValueType());
Tmp4 = DAG.getCondCode(ISD::SETNE);
Tmp1 = DAG.getNode(ISD::BR_CC, dl, Node->getValueType(0), Tmp1, Tmp4, Tmp2,
Tmp3, Node->getOperand(4));
Results.push_back(Tmp1);
break;
}
case ISD::GLOBAL_OFFSET_TABLE:
case ISD::GlobalAddress:
case ISD::GlobalTLSAddress:
case ISD::ExternalSymbol:
case ISD::ConstantPool:
case ISD::JumpTable:
case ISD::INTRINSIC_W_CHAIN:
case ISD::INTRINSIC_WO_CHAIN:
case ISD::INTRINSIC_VOID:
for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i)
Results.push_back(SDValue(Node, i));
break;
}
}
void SelectionDAGLegalize::PromoteNode(SDNode *Node,
SmallVectorImpl<SDValue> &Results) {
EVT OVT = Node->getValueType(0);
if (Node->getOpcode() == ISD::UINT_TO_FP ||
Node->getOpcode() == ISD::SINT_TO_FP ||
Node->getOpcode() == ISD::SETCC) {
OVT = Node->getOperand(0).getValueType();
}
EVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), OVT);
DebugLoc dl = Node->getDebugLoc();
SDValue Tmp1, Tmp2, Tmp3;
switch (Node->getOpcode()) {
case ISD::CTTZ:
case ISD::CTLZ:
case ISD::CTPOP:
Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Node->getOperand(0));
Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1);
if (Node->getOpcode() == ISD::CTTZ) {
Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(NVT),
Tmp1, DAG.getConstant(NVT.getSizeInBits(), NVT),
ISD::SETEQ);
Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2,
DAG.getConstant(OVT.getSizeInBits(), NVT), Tmp1);
} else if (Node->getOpcode() == ISD::CTLZ) {
Tmp1 = DAG.getNode(ISD::SUB, dl, NVT, Tmp1,
DAG.getConstant(NVT.getSizeInBits() -
OVT.getSizeInBits(), NVT));
}
Results.push_back(DAG.getNode(ISD::TRUNCATE, dl, OVT, Tmp1));
break;
case ISD::BSWAP: {
unsigned DiffBits = NVT.getSizeInBits() - OVT.getSizeInBits();
Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Node->getOperand(0));
Tmp1 = DAG.getNode(ISD::BSWAP, dl, NVT, Tmp1);
Tmp1 = DAG.getNode(ISD::SRL, dl, NVT, Tmp1,
DAG.getConstant(DiffBits, TLI.getShiftAmountTy()));
Results.push_back(Tmp1);
break;
}
case ISD::FP_TO_UINT:
case ISD::FP_TO_SINT:
Tmp1 = PromoteLegalFP_TO_INT(Node->getOperand(0), Node->getValueType(0),
Node->getOpcode() == ISD::FP_TO_SINT, dl);
Results.push_back(Tmp1);
break;
case ISD::UINT_TO_FP:
case ISD::SINT_TO_FP:
Tmp1 = PromoteLegalINT_TO_FP(Node->getOperand(0), Node->getValueType(0),
Node->getOpcode() == ISD::SINT_TO_FP, dl);
Results.push_back(Tmp1);
break;
case ISD::AND:
case ISD::OR:
case ISD::XOR: {
unsigned ExtOp, TruncOp;
if (OVT.isVector()) {
ExtOp = ISD::BIT_CONVERT;
TruncOp = ISD::BIT_CONVERT;
} else if (OVT.isInteger()) {
ExtOp = ISD::ANY_EXTEND;
TruncOp = ISD::TRUNCATE;
} else {
llvm_report_error("Cannot promote logic operation");
}
Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0));
Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1));
Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1, Tmp2);
Results.push_back(DAG.getNode(TruncOp, dl, OVT, Tmp1));
break;
}
case ISD::SELECT: {
unsigned ExtOp, TruncOp;
if (Node->getValueType(0).isVector()) {
ExtOp = ISD::BIT_CONVERT;
TruncOp = ISD::BIT_CONVERT;
} else if (Node->getValueType(0).isInteger()) {
ExtOp = ISD::ANY_EXTEND;
TruncOp = ISD::TRUNCATE;
} else {
ExtOp = ISD::FP_EXTEND;
TruncOp = ISD::FP_ROUND;
}
Tmp1 = Node->getOperand(0);
Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1));
Tmp3 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(2));
Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp1, Tmp2, Tmp3);
if (TruncOp != ISD::FP_ROUND)
Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1);
else
Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1,
DAG.getIntPtrConstant(0));
Results.push_back(Tmp1);
break;
}
case ISD::VECTOR_SHUFFLE: {
SmallVector<int, 8> Mask;
cast<ShuffleVectorSDNode>(Node)->getMask(Mask);
Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, NVT, Node->getOperand(0));
Tmp2 = DAG.getNode(ISD::BIT_CONVERT, dl, NVT, Node->getOperand(1));
Tmp1 = ShuffleWithNarrowerEltType(NVT, OVT, dl, Tmp1, Tmp2, Mask);
Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, OVT, Tmp1);
Results.push_back(Tmp1);
break;
}
case ISD::SETCC: {
unsigned ExtOp = ISD::FP_EXTEND;
if (NVT.isInteger()) {
ISD::CondCode CCCode =
cast<CondCodeSDNode>(Node->getOperand(2))->get();
ExtOp = isSignedIntSetCC(CCCode) ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND;
}
Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0));
Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1));
Results.push_back(DAG.getNode(ISD::SETCC, dl, Node->getValueType(0),
Tmp1, Tmp2, Node->getOperand(2)));
break;
}
}
}
void SelectionDAG::Legalize(CodeGenOpt::Level OptLevel) {
SelectionDAGLegalize(*this, OptLevel).LegalizeDAG();
}