summaryrefslogtreecommitdiff
path: root/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp')
-rw-r--r--lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp203
1 files changed, 69 insertions, 134 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 6a737ed84ea4..ba9e11798f15 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -83,20 +83,6 @@ LimitFPPrecision("limit-float-precision",
"for some float libcalls"),
cl::location(LimitFloatPrecision),
cl::init(0));
-
-/// Minimum jump table density for normal functions.
-static cl::opt<unsigned>
-JumpTableDensity("jump-table-density", cl::init(10), cl::Hidden,
- cl::desc("Minimum density for building a jump table in "
- "a normal function"));
-
-/// Minimum jump table density for -Os or -Oz functions.
-static cl::opt<unsigned>
-OptsizeJumpTableDensity("optsize-jump-table-density", cl::init(40), cl::Hidden,
- cl::desc("Minimum density for building a jump table in "
- "an optsize function"));
-
-
// Limit the width of DAG chains. This is important in general to prevent
// DAG-based analysis from blowing up. For example, alias analysis and
// load clustering may not complete in reasonable time. It is difficult to
@@ -364,7 +350,8 @@ static SDValue getCopyFromPartsVector(SelectionDAG &DAG, const SDLoc &DL,
EVT ValueSVT = ValueVT.getVectorElementType();
if (ValueVT.getVectorNumElements() == 1 && ValueSVT != PartEVT)
- Val = DAG.getAnyExtOrTrunc(Val, DL, ValueSVT);
+ Val = ValueVT.isFloatingPoint() ? DAG.getFPExtendOrRound(Val, DL, ValueSVT)
+ : DAG.getAnyExtOrTrunc(Val, DL, ValueSVT);
return DAG.getBuildVector(ValueVT, DL, Val);
}
@@ -557,10 +544,9 @@ static void getCopyToPartsVector(SelectionDAG &DAG, const SDLoc &DL,
Val = DAG.getNode(
ISD::EXTRACT_VECTOR_ELT, DL, PartVT, Val,
DAG.getConstant(0, DL, TLI.getVectorIdxTy(DAG.getDataLayout())));
-
- Val = DAG.getAnyExtOrTrunc(Val, DL, PartVT);
}
+ assert(Val.getValueType() == PartVT && "Unexpected vector part value type");
Parts[0] = Val;
return;
}
@@ -675,7 +661,7 @@ SDValue RegsForValue::getCopyFromRegs(SelectionDAG &DAG,
unsigned RegSize = RegisterVT.getSizeInBits();
unsigned NumSignBits = LOI->NumSignBits;
- unsigned NumZeroBits = LOI->KnownZero.countLeadingOnes();
+ unsigned NumZeroBits = LOI->Known.Zero.countLeadingOnes();
if (NumZeroBits == RegSize) {
// The current value is a zero.
@@ -1349,7 +1335,7 @@ void SelectionDAGBuilder::visitRet(const ReturnInst &I) {
RetPtr.getValueType(), RetPtr,
DAG.getIntPtrConstant(Offsets[i],
getCurSDLoc()),
- &Flags);
+ Flags);
Chains[i] = DAG.getStore(Chain, getCurSDLoc(),
SDValue(RetOp.getNode(), RetOp.getResNo() + i),
// FIXME: better loc info would be nice.
@@ -2589,7 +2575,7 @@ void SelectionDAGBuilder::visitBinary(const User &I, unsigned OpCode) {
Flags.setUnsafeAlgebra(FMF.unsafeAlgebra());
SDValue BinNodeValue = DAG.getNode(OpCode, getCurSDLoc(), Op1.getValueType(),
- Op1, Op2, &Flags);
+ Op1, Op2, Flags);
setValue(&I, BinNodeValue);
}
@@ -2642,7 +2628,7 @@ void SelectionDAGBuilder::visitShift(const User &I, unsigned Opcode) {
Flags.setNoSignedWrap(nsw);
Flags.setNoUnsignedWrap(nuw);
SDValue Res = DAG.getNode(Opcode, getCurSDLoc(), Op1.getValueType(), Op1, Op2,
- &Flags);
+ Flags);
setValue(&I, Res);
}
@@ -2654,7 +2640,7 @@ void SelectionDAGBuilder::visitSDiv(const User &I) {
Flags.setExact(isa<PossiblyExactOperator>(&I) &&
cast<PossiblyExactOperator>(&I)->isExact());
setValue(&I, DAG.getNode(ISD::SDIV, getCurSDLoc(), Op1.getValueType(), Op1,
- Op2, &Flags));
+ Op2, Flags));
}
void SelectionDAGBuilder::visitICmp(const User &I) {
@@ -3266,7 +3252,7 @@ void SelectionDAGBuilder::visitGetElementPtr(const User &I) {
Flags.setNoUnsignedWrap(true);
N = DAG.getNode(ISD::ADD, dl, N.getValueType(), N,
- DAG.getConstant(Offset, dl, N.getValueType()), &Flags);
+ DAG.getConstant(Offset, dl, N.getValueType()), Flags);
}
} else {
MVT PtrTy =
@@ -3296,7 +3282,7 @@ void SelectionDAGBuilder::visitGetElementPtr(const User &I) {
if (Offs.isNonNegative() && cast<GEPOperator>(I).isInBounds())
Flags.setNoUnsignedWrap(true);
- N = DAG.getNode(ISD::ADD, dl, N.getValueType(), N, OffsVal, &Flags);
+ N = DAG.getNode(ISD::ADD, dl, N.getValueType(), N, OffsVal, Flags);
continue;
}
@@ -3374,7 +3360,7 @@ void SelectionDAGBuilder::visitAlloca(const AllocaInst &I) {
Flags.setNoUnsignedWrap(true);
AllocSize = DAG.getNode(ISD::ADD, dl,
AllocSize.getValueType(), AllocSize,
- DAG.getIntPtrConstant(StackAlign - 1, dl), &Flags);
+ DAG.getIntPtrConstant(StackAlign - 1, dl), Flags);
// Mask out the low bits for alignment purposes.
AllocSize = DAG.getNode(ISD::AND, dl,
@@ -3478,7 +3464,7 @@ void SelectionDAGBuilder::visitLoad(const LoadInst &I) {
SDValue A = DAG.getNode(ISD::ADD, dl,
PtrVT, Ptr,
DAG.getConstant(Offsets[i], dl, PtrVT),
- &Flags);
+ Flags);
auto MMOFlags = MachineMemOperand::MONone;
if (isVolatile)
MMOFlags |= MachineMemOperand::MOVolatile;
@@ -3633,7 +3619,7 @@ void SelectionDAGBuilder::visitStore(const StoreInst &I) {
ChainI = 0;
}
SDValue Add = DAG.getNode(ISD::ADD, dl, PtrVT, Ptr,
- DAG.getConstant(Offsets[i], dl, PtrVT), &Flags);
+ DAG.getConstant(Offsets[i], dl, PtrVT), Flags);
SDValue St = DAG.getStore(
Root, dl, SDValue(Src.getNode(), Src.getResNo() + i), Add,
MachinePointerInfo(PtrV, Offsets[i]), Alignment, MMOFlags, AAInfo);
@@ -7897,7 +7883,7 @@ TargetLowering::LowerCallTo(TargetLowering::CallLoweringInfo &CLI) const {
for (unsigned i = 0; i < NumValues; ++i) {
SDValue Add = CLI.DAG.getNode(ISD::ADD, CLI.DL, PtrVT, DemoteStackSlot,
CLI.DAG.getConstant(Offsets[i], CLI.DL,
- PtrVT), &Flags);
+ PtrVT), Flags);
SDValue L = CLI.DAG.getLoad(
RetTys[i], CLI.DL, CLI.Chain, Add,
MachinePointerInfo::getFixedStack(CLI.DAG.getMachineFunction(),
@@ -8187,15 +8173,14 @@ void SelectionDAGISel::LowerArguments(const Function &F) {
findArgumentCopyElisionCandidates(DL, FuncInfo, ArgCopyElisionCandidates);
// Set up the incoming argument description vector.
- unsigned Idx = 0;
for (const Argument &Arg : F.args()) {
- ++Idx;
+ unsigned ArgNo = Arg.getArgNo();
SmallVector<EVT, 4> ValueVTs;
ComputeValueVTs(*TLI, DAG.getDataLayout(), Arg.getType(), ValueVTs);
bool isArgValueUsed = !Arg.use_empty();
unsigned PartBase = 0;
Type *FinalType = Arg.getType();
- if (F.getAttributes().hasAttribute(Idx, Attribute::ByVal))
+ if (Arg.hasAttribute(Attribute::ByVal))
FinalType = cast<PointerType>(FinalType)->getElementType();
bool NeedsRegBlock = TLI->functionArgumentNeedsConsecutiveRegisters(
FinalType, F.getCallingConv(), F.isVarArg());
@@ -8206,11 +8191,11 @@ void SelectionDAGISel::LowerArguments(const Function &F) {
ISD::ArgFlagsTy Flags;
unsigned OriginalAlignment = DL.getABITypeAlignment(ArgTy);
- if (F.getAttributes().hasAttribute(Idx, Attribute::ZExt))
+ if (Arg.hasAttribute(Attribute::ZExt))
Flags.setZExt();
- if (F.getAttributes().hasAttribute(Idx, Attribute::SExt))
+ if (Arg.hasAttribute(Attribute::SExt))
Flags.setSExt();
- if (F.getAttributes().hasAttribute(Idx, Attribute::InReg)) {
+ if (Arg.hasAttribute(Attribute::InReg)) {
// If we are using vectorcall calling convention, a structure that is
// passed InReg - is surely an HVA
if (F.getCallingConv() == CallingConv::X86_VectorCall &&
@@ -8223,15 +8208,15 @@ void SelectionDAGISel::LowerArguments(const Function &F) {
// Set InReg Flag
Flags.setInReg();
}
- if (F.getAttributes().hasAttribute(Idx, Attribute::StructRet))
+ if (Arg.hasAttribute(Attribute::StructRet))
Flags.setSRet();
- if (F.getAttributes().hasAttribute(Idx, Attribute::SwiftSelf))
+ if (Arg.hasAttribute(Attribute::SwiftSelf))
Flags.setSwiftSelf();
- if (F.getAttributes().hasAttribute(Idx, Attribute::SwiftError))
+ if (Arg.hasAttribute(Attribute::SwiftError))
Flags.setSwiftError();
- if (F.getAttributes().hasAttribute(Idx, Attribute::ByVal))
+ if (Arg.hasAttribute(Attribute::ByVal))
Flags.setByVal();
- if (F.getAttributes().hasAttribute(Idx, Attribute::InAlloca)) {
+ if (Arg.hasAttribute(Attribute::InAlloca)) {
Flags.setInAlloca();
// Set the byval flag for CCAssignFn callbacks that don't know about
// inalloca. This way we can know how many bytes we should've allocated
@@ -8242,7 +8227,7 @@ void SelectionDAGISel::LowerArguments(const Function &F) {
}
if (F.getCallingConv() == CallingConv::X86_INTR) {
// IA Interrupt passes frame (1st parameter) by value in the stack.
- if (Idx == 1)
+ if (ArgNo == 0)
Flags.setByVal();
}
if (Flags.isByVal() || Flags.isInAlloca()) {
@@ -8252,13 +8237,13 @@ void SelectionDAGISel::LowerArguments(const Function &F) {
// For ByVal, alignment should be passed from FE. BE will guess if
// this info is not there but there are cases it cannot get right.
unsigned FrameAlign;
- if (F.getParamAlignment(Idx))
- FrameAlign = F.getParamAlignment(Idx);
+ if (Arg.getParamAlignment())
+ FrameAlign = Arg.getParamAlignment();
else
FrameAlign = TLI->getByValTypeAlignment(ElementTy, DL);
Flags.setByValAlign(FrameAlign);
}
- if (F.getAttributes().hasAttribute(Idx, Attribute::Nest))
+ if (Arg.hasAttribute(Attribute::Nest))
Flags.setNest();
if (NeedsRegBlock)
Flags.setInConsecutiveRegs();
@@ -8270,7 +8255,7 @@ void SelectionDAGISel::LowerArguments(const Function &F) {
unsigned NumRegs = TLI->getNumRegisters(*CurDAG->getContext(), VT);
for (unsigned i = 0; i != NumRegs; ++i) {
ISD::InputArg MyFlags(Flags, RegisterVT, VT, isArgValueUsed,
- Idx-1, PartBase+i*RegisterVT.getStoreSize());
+ ArgNo, PartBase+i*RegisterVT.getStoreSize());
if (NumRegs > 1 && i == 0)
MyFlags.Flags.setSplit();
// if it isn't first piece, alignment must be 1
@@ -8311,7 +8296,6 @@ void SelectionDAGISel::LowerArguments(const Function &F) {
// Set up the argument values.
unsigned i = 0;
- Idx = 0;
if (!FuncInfo->CanLowerReturn) {
// Create a virtual register for the sret pointer, and put in a copy
// from the sret argument into it.
@@ -8333,14 +8317,12 @@ void SelectionDAGISel::LowerArguments(const Function &F) {
DAG.setRoot(NewRoot);
// i indexes lowered arguments. Bump it past the hidden sret argument.
- // Idx indexes LLVM arguments. Don't touch it.
++i;
}
SmallVector<SDValue, 4> Chains;
DenseMap<int, int> ArgCopyElisionFrameIndexMap;
for (const Argument &Arg : F.args()) {
- ++Idx;
SmallVector<SDValue, 4> ArgValues;
SmallVector<EVT, 4> ValueVTs;
ComputeValueVTs(*TLI, DAG.getDataLayout(), Arg.getType(), ValueVTs);
@@ -8362,7 +8344,7 @@ void SelectionDAGISel::LowerArguments(const Function &F) {
// debugging information.
bool isSwiftErrorArg =
TLI->supportSwiftError() &&
- F.getAttributes().hasAttribute(Idx, Attribute::SwiftError);
+ Arg.hasAttribute(Attribute::SwiftError);
if (!ArgHasUses && !isSwiftErrorArg) {
SDB->setUnusedArgValue(&Arg, InVals[i]);
@@ -8382,9 +8364,9 @@ void SelectionDAGISel::LowerArguments(const Function &F) {
// function.
if (ArgHasUses || isSwiftErrorArg) {
Optional<ISD::NodeType> AssertOp;
- if (F.getAttributes().hasAttribute(Idx, Attribute::SExt))
+ if (Arg.hasAttribute(Attribute::SExt))
AssertOp = ISD::AssertSext;
- else if (F.getAttributes().hasAttribute(Idx, Attribute::ZExt))
+ else if (Arg.hasAttribute(Attribute::ZExt))
AssertOp = ISD::AssertZext;
ArgValues.push_back(getCopyFromParts(DAG, dl, &InVals[i], NumParts,
@@ -8589,13 +8571,10 @@ void SelectionDAGBuilder::updateDAGForMaybeTailCall(SDValue MaybeTC) {
HasTailCall = true;
}
-bool SelectionDAGBuilder::isDense(const CaseClusterVector &Clusters,
- const SmallVectorImpl<unsigned> &TotalCases,
- unsigned First, unsigned Last,
- unsigned Density) const {
+uint64_t
+SelectionDAGBuilder::getJumpTableRange(const CaseClusterVector &Clusters,
+ unsigned First, unsigned Last) const {
assert(Last >= First);
- assert(TotalCases[Last] >= TotalCases[First]);
-
const APInt &LowCase = Clusters[First].Low->getValue();
const APInt &HighCase = Clusters[Last].High->getValue();
assert(LowCase.getBitWidth() == HighCase.getBitWidth());
@@ -8604,26 +8583,17 @@ bool SelectionDAGBuilder::isDense(const CaseClusterVector &Clusters,
// comparison to lower. We should discriminate against such consecutive ranges
// in jump tables.
- uint64_t Diff = (HighCase - LowCase).getLimitedValue((UINT64_MAX - 1) / 100);
- uint64_t Range = Diff + 1;
+ return (HighCase - LowCase).getLimitedValue((UINT64_MAX - 1) / 100) + 1;
+}
+uint64_t SelectionDAGBuilder::getJumpTableNumCases(
+ const SmallVectorImpl<unsigned> &TotalCases, unsigned First,
+ unsigned Last) const {
+ assert(Last >= First);
+ assert(TotalCases[Last] >= TotalCases[First]);
uint64_t NumCases =
TotalCases[Last] - (First == 0 ? 0 : TotalCases[First - 1]);
-
- assert(NumCases < UINT64_MAX / 100);
- assert(Range >= NumCases);
-
- return NumCases * 100 >= Range * Density;
-}
-
-static inline bool areJTsAllowed(const TargetLowering &TLI,
- const SwitchInst *SI) {
- const Function *Fn = SI->getParent()->getParent();
- if (Fn->getFnAttribute("no-jump-tables").getValueAsString() == "true")
- return false;
-
- return TLI.isOperationLegalOrCustom(ISD::BR_JT, MVT::Other) ||
- TLI.isOperationLegalOrCustom(ISD::BRIND, MVT::Other);
+ return NumCases;
}
bool SelectionDAGBuilder::buildJumpTable(const CaseClusterVector &Clusters,
@@ -8662,10 +8632,11 @@ bool SelectionDAGBuilder::buildJumpTable(const CaseClusterVector &Clusters,
JTProbs[Clusters[I].MBB] += Clusters[I].Prob;
}
+ const TargetLowering &TLI = DAG.getTargetLoweringInfo();
unsigned NumDests = JTProbs.size();
- if (isSuitableForBitTests(NumDests, NumCmps,
- Clusters[First].Low->getValue(),
- Clusters[Last].High->getValue())) {
+ if (TLI.isSuitableForBitTests(
+ NumDests, NumCmps, Clusters[First].Low->getValue(),
+ Clusters[Last].High->getValue(), DAG.getDataLayout())) {
// Clusters[First..Last] should be lowered as bit tests instead.
return false;
}
@@ -8686,7 +8657,6 @@ bool SelectionDAGBuilder::buildJumpTable(const CaseClusterVector &Clusters,
}
JumpTableMBB->normalizeSuccProbs();
- const TargetLowering &TLI = DAG.getTargetLoweringInfo();
unsigned JTI = CurMF->getOrCreateJumpTableInfo(TLI.getJumpTableEncoding())
->createJumpTableIndex(Table);
@@ -8715,17 +8685,12 @@ void SelectionDAGBuilder::findJumpTables(CaseClusterVector &Clusters,
#endif
const TargetLowering &TLI = DAG.getTargetLoweringInfo();
- if (!areJTsAllowed(TLI, SI))
+ if (!TLI.areJTsAllowed(SI->getParent()->getParent()))
return;
- const bool OptForSize = DefaultMBB->getParent()->getFunction()->optForSize();
-
const int64_t N = Clusters.size();
const unsigned MinJumpTableEntries = TLI.getMinimumJumpTableEntries();
const unsigned SmallNumberOfEntries = MinJumpTableEntries / 2;
- const unsigned MaxJumpTableSize =
- OptForSize || TLI.getMaximumJumpTableSize() == 0
- ? UINT_MAX : TLI.getMaximumJumpTableSize();
if (N < 2 || N < MinJumpTableEntries)
return;
@@ -8740,15 +8705,12 @@ void SelectionDAGBuilder::findJumpTables(CaseClusterVector &Clusters,
TotalCases[i] += TotalCases[i - 1];
}
- const unsigned MinDensity =
- OptForSize ? OptsizeJumpTableDensity : JumpTableDensity;
-
// Cheap case: the whole range may be suitable for jump table.
- unsigned JumpTableSize = (Clusters[N - 1].High->getValue() -
- Clusters[0].Low->getValue())
- .getLimitedValue(UINT_MAX - 1) + 1;
- if (JumpTableSize <= MaxJumpTableSize &&
- isDense(Clusters, TotalCases, 0, N - 1, MinDensity)) {
+ uint64_t Range = getJumpTableRange(Clusters,0, N - 1);
+ uint64_t NumCases = getJumpTableNumCases(TotalCases, 0, N - 1);
+ assert(NumCases < UINT64_MAX / 100);
+ assert(Range >= NumCases);
+ if (TLI.isSuitableForJumpTable(SI, NumCases, Range)) {
CaseCluster JTCluster;
if (buildJumpTable(Clusters, 0, N - 1, SI, DefaultMBB, JTCluster)) {
Clusters[0] = JTCluster;
@@ -8801,11 +8763,11 @@ void SelectionDAGBuilder::findJumpTables(CaseClusterVector &Clusters,
// Search for a solution that results in fewer partitions.
for (int64_t j = N - 1; j > i; j--) {
// Try building a partition from Clusters[i..j].
- JumpTableSize = (Clusters[j].High->getValue() -
- Clusters[i].Low->getValue())
- .getLimitedValue(UINT_MAX - 1) + 1;
- if (JumpTableSize <= MaxJumpTableSize &&
- isDense(Clusters, TotalCases, i, j, MinDensity)) {
+ uint64_t Range = getJumpTableRange(Clusters, i, j);
+ uint64_t NumCases = getJumpTableNumCases(TotalCases, i, j);
+ assert(NumCases < UINT64_MAX / 100);
+ assert(Range >= NumCases);
+ if (TLI.isSuitableForJumpTable(SI, NumCases, Range)) {
unsigned NumPartitions = 1 + (j == N - 1 ? 0 : MinPartitions[j + 1]);
unsigned Score = j == N - 1 ? 0 : PartitionsScore[j + 1];
int64_t NumEntries = j - i + 1;
@@ -8849,36 +8811,6 @@ void SelectionDAGBuilder::findJumpTables(CaseClusterVector &Clusters,
Clusters.resize(DstIndex);
}
-bool SelectionDAGBuilder::rangeFitsInWord(const APInt &Low, const APInt &High) {
- // FIXME: Using the pointer type doesn't seem ideal.
- uint64_t BW = DAG.getDataLayout().getPointerSizeInBits();
- uint64_t Range = (High - Low).getLimitedValue(UINT64_MAX - 1) + 1;
- return Range <= BW;
-}
-
-bool SelectionDAGBuilder::isSuitableForBitTests(unsigned NumDests,
- unsigned NumCmps,
- const APInt &Low,
- const APInt &High) {
- // FIXME: I don't think NumCmps is the correct metric: a single case and a
- // range of cases both require only one branch to lower. Just looking at the
- // number of clusters and destinations should be enough to decide whether to
- // build bit tests.
-
- // To lower a range with bit tests, the range must fit the bitwidth of a
- // machine word.
- if (!rangeFitsInWord(Low, High))
- return false;
-
- // Decide whether it's profitable to lower this range with bit tests. Each
- // destination requires a bit test and branch, and there is an overall range
- // check branch. For a small number of clusters, separate comparisons might be
- // cheaper, and for many destinations, splitting the range might be better.
- return (NumDests == 1 && NumCmps >= 3) ||
- (NumDests == 2 && NumCmps >= 5) ||
- (NumDests == 3 && NumCmps >= 6);
-}
-
bool SelectionDAGBuilder::buildBitTests(CaseClusterVector &Clusters,
unsigned First, unsigned Last,
const SwitchInst *SI,
@@ -8900,16 +8832,17 @@ bool SelectionDAGBuilder::buildBitTests(CaseClusterVector &Clusters,
APInt High = Clusters[Last].High->getValue();
assert(Low.slt(High));
- if (!isSuitableForBitTests(NumDests, NumCmps, Low, High))
+ const TargetLowering &TLI = DAG.getTargetLoweringInfo();
+ const DataLayout &DL = DAG.getDataLayout();
+ if (!TLI.isSuitableForBitTests(NumDests, NumCmps, Low, High, DL))
return false;
APInt LowBound;
APInt CmpRange;
- const int BitWidth = DAG.getTargetLoweringInfo()
- .getPointerTy(DAG.getDataLayout())
- .getSizeInBits();
- assert(rangeFitsInWord(Low, High) && "Case range must fit in bit mask!");
+ const int BitWidth = TLI.getPointerTy(DL).getSizeInBits();
+ assert(TLI.rangeFitsInWord(Low, High, DL) &&
+ "Case range must fit in bit mask!");
// Check if the clusters cover a contiguous range such that no value in the
// range will jump to the default statement.
@@ -8999,7 +8932,9 @@ void SelectionDAGBuilder::findBitTestClusters(CaseClusterVector &Clusters,
// If target does not have legal shift left, do not emit bit tests at all.
const TargetLowering &TLI = DAG.getTargetLoweringInfo();
- EVT PTy = TLI.getPointerTy(DAG.getDataLayout());
+ const DataLayout &DL = DAG.getDataLayout();
+
+ EVT PTy = TLI.getPointerTy(DL);
if (!TLI.isOperationLegal(ISD::SHL, PTy))
return;
@@ -9030,8 +8965,8 @@ void SelectionDAGBuilder::findBitTestClusters(CaseClusterVector &Clusters,
// Try building a partition from Clusters[i..j].
// Check the range.
- if (!rangeFitsInWord(Clusters[i].Low->getValue(),
- Clusters[j].High->getValue()))
+ if (!TLI.rangeFitsInWord(Clusters[i].Low->getValue(),
+ Clusters[j].High->getValue(), DL))
continue;
// Check nbr of destinations and cluster types.