14#ifndef LLVM_LIB_TARGET_AARCH64_AARCH64ISELLOWERING_H
15#define LLVM_LIB_TARGET_AARCH64_AARCH64ISELLOWERING_H
560 const APInt &DemandedElts,
562 unsigned Depth = 0)
const override;
565 const APInt &DemandedElts,
567 unsigned Depth)
const override;
578 const APInt &DemandedElts,
579 TargetLoweringOpt &TLO)
const override;
588 unsigned *
Fast =
nullptr)
const override;
593 unsigned *
Fast =
nullptr)
const override;
610 bool ForCodeSize)
const override;
622 EVT VT)
const override;
643 unsigned Opcode,
bool Op0IsDef)
const;
652 unsigned Intrinsic)
const override;
655 EVT NewVT)
const override;
681 unsigned Factor)
const override;
683 unsigned Factor)
const override;
695 SDValue ConstNode)
const override;
712 int64_t MaxOffset)
const override;
718 EVT VT)
const override;
743 EVT VT)
const override;
748 Type *Ty)
const override;
753 unsigned Index)
const override;
756 bool MathUsed)
const override {
844 return V.getValueType().isScalarInteger();
848 EVT VT =
Y.getValueType();
860 unsigned OldShiftOpcode,
unsigned NewShiftOpcode,
865 unsigned ExpansionFactor)
const override;
868 unsigned KeptBits)
const override {
873 auto VTIsOk = [](
EVT VT) ->
bool {
874 return VT == MVT::i8 || VT == MVT::i16 || VT == MVT::i32 ||
881 return VTIsOk(XVT) && VTIsOk(KeptBitsVT);
926 bool &UseScalable)
const;
931 bool UseScalable)
const;
955 if (
F.hasFnAttribute(Attribute::NoRedZone))
964 bool AllowUnknown =
false)
const override;
987 EVT VT)
const override;
990 EVT VT)
const override;
994 unsigned &NumIntermediates,
995 MVT &RegisterVT)
const override;
1005 bool isExtFreeImpl(
const Instruction *Ext)
const override;
1007 void addTypeForNEON(
MVT VT);
1008 void addTypeForFixedLengthSVE(
MVT VT,
bool StreamingSVE);
1009 void addDRTypeForNEON(
MVT VT);
1010 void addQRTypeForNEON(
MVT VT);
1024 SDValue LowerCall(CallLoweringInfo & ,
1032 SDValue ThisVal,
bool RequiresSMChange)
const;
1049 isEligibleForTailCallOptimization(
const CallLoweringInfo &CLI)
const;
1057 bool DoesCalleeRestoreStack(
CallingConv::ID CallCC,
bool TailCallOpt)
const;
1073 unsigned Flag)
const;
1075 unsigned Flag)
const;
1077 unsigned Flag)
const;
1079 unsigned Flag)
const;
1081 unsigned Flag)
const;
1082 template <
class NodeTy>
1084 template <
class NodeTy>
1086 template <
class NodeTy>
1088 template <
class NodeTy>
1131 unsigned NewOp)
const;
1205 int &ExtraSteps,
bool &UseOneConst,
1206 bool Reciprocal)
const override;
1208 int &ExtraSteps)
const override;
1213 unsigned combineRepeatedFPDivisors()
const override;
1222 getSingleConstraintMatchWeight(AsmOperandInfo &
info,
1223 const char *constraint)
const override;
1225 std::pair<unsigned, const TargetRegisterClass *>
1229 const char *LowerXConstraint(
EVT ConstraintVT)
const override;
1232 std::vector<SDValue> &Ops,
1236 getInlineAsmMemConstraint(
StringRef ConstraintCode)
const override {
1237 if (ConstraintCode ==
"Q")
1246 SDValue LowerAsmOutputForConstraint(SDValue &Chain, SDValue &Flag,
1248 const AsmOperandInfo &Constraint,
1249 SelectionDAG &DAG)
const override;
1251 bool shouldExtendGSIndex(EVT VT, EVT &EltTy)
const override;
1252 bool shouldRemoveExtendFromGSIndex(SDValue Extend, EVT DataVT)
const override;
1253 bool isVectorLoadExtDesirable(SDValue ExtVal)
const override;
1254 bool isUsedByReturnOnly(SDNode *
N, SDValue &Chain)
const override;
1255 bool mayBeEmittedAsTailCall(
const CallInst *CI)
const override;
1256 bool getIndexedAddressParts(SDNode *
N, SDNode *
Op, SDValue &
Base,
1257 SDValue &
Offset, SelectionDAG &DAG)
const;
1258 bool getPreIndexedAddressParts(SDNode *
N, SDValue &
Base, SDValue &
Offset,
1260 SelectionDAG &DAG)
const override;
1261 bool getPostIndexedAddressParts(SDNode *
N, SDNode *
Op, SDValue &
Base,
1263 SelectionDAG &DAG)
const override;
1264 bool isIndexingLegal(MachineInstr &
MI, Register
Base, Register
Offset,
1265 bool IsPre, MachineRegisterInfo &
MRI)
const override;
1267 void ReplaceNodeResults(SDNode *
N, SmallVectorImpl<SDValue> &
Results,
1268 SelectionDAG &DAG)
const override;
1269 void ReplaceBITCASTResults(SDNode *
N, SmallVectorImpl<SDValue> &
Results,
1270 SelectionDAG &DAG)
const;
1271 void ReplaceExtractSubVectorResults(SDNode *
N,
1272 SmallVectorImpl<SDValue> &
Results,
1273 SelectionDAG &DAG)
const;
1275 bool shouldNormalizeToSelectSequence(LLVMContext &, EVT)
const override;
1277 void finalizeLowering(MachineFunction &MF)
const override;
1279 bool shouldLocalize(
const MachineInstr &
MI,
1280 const TargetTransformInfo *
TTI)
const override;
1282 bool SimplifyDemandedBitsForTargetNode(SDValue
Op,
1283 const APInt &OriginalDemandedBits,
1284 const APInt &OriginalDemandedElts,
1286 TargetLoweringOpt &TLO,
1287 unsigned Depth)
const override;
1289 bool isTargetCanonicalConstantNode(SDValue
Op)
const override;
1301 SDValue getSVESafeBitCast(EVT VT, SDValue
Op, SelectionDAG &DAG)
const;
1305 SDValue getRuntimePStateSM(SelectionDAG &DAG, SDValue Chain, SDLoc
DL,
1308 bool preferScalarizeSplat(SDNode *
N)
const override;
1310 unsigned getMinimumJumpTableEntries()
const override;
1312 bool softPromoteHalfType()
const override {
return true; }
1317 const TargetLibraryInfo *libInfo);
unsigned const MachineRegisterInfo * MRI
MachineBasicBlock MachineBasicBlock::iterator DebugLoc DL
MachineBasicBlock MachineBasicBlock::iterator MBBI
Function Alias Analysis Results
static GCRegistry::Add< OcamlGC > B("ocaml", "ocaml 3.10-compatible GC")
Analysis containing CSE Info
static GCMetadataPrinterRegistry::Add< ErlangGCPrinter > X("erlang", "erlang-compatible garbage collector")
const HexagonInstrInfo * TII
unsigned const TargetRegisterInfo * TRI
static GCMetadataPrinterRegistry::Add< OcamlGCMetadataPrinter > Y("ocaml", "ocaml 3.10-compatible collector")
PowerPC Reduce CR logical Operation
const char LLVMTargetMachineRef TM
static cl::opt< RegAllocEvictionAdvisorAnalysis::AdvisorMode > Mode("regalloc-enable-advisor", cl::Hidden, cl::init(RegAllocEvictionAdvisorAnalysis::AdvisorMode::Default), cl::desc("Enable regalloc advisor mode"), cl::values(clEnumValN(RegAllocEvictionAdvisorAnalysis::AdvisorMode::Default, "default", "Default"), clEnumValN(RegAllocEvictionAdvisorAnalysis::AdvisorMode::Release, "release", "precompiled"), clEnumValN(RegAllocEvictionAdvisorAnalysis::AdvisorMode::Development, "development", "for training")))
This file describes how to lower LLVM code to machine code.
bool isTruncateFree(Type *Ty1, Type *Ty2) const override
Return true if it's free to truncate a value of type FromTy to type ToTy.
bool supportSplitCSR(MachineFunction *MF) const override
Return true if the target supports that a subset of CSRs for the given machine function is handled ex...
bool shouldFoldSelectWithIdentityConstant(unsigned BinOpcode, EVT VT) const override
Return true if pulling a binary operation into a select with an identity constant is profitable.
bool isFPImmLegal(const APFloat &Imm, EVT VT, bool ForCodeSize) const override
Returns true if the target can instruction select the specified FP immediate natively.
MVT getRegisterTypeForCallingConv(LLVMContext &Context, CallingConv::ID CC, EVT VT) const override
Certain combinations of ABIs, Targets and features require that types are legal for some operations a...
void initializeSplitCSR(MachineBasicBlock *Entry) const override
Perform necessary initialization to handle a subset of CSRs explicitly via copies.
void computeKnownBitsForTargetNode(const SDValue Op, KnownBits &Known, const APInt &DemandedElts, const SelectionDAG &DAG, unsigned Depth=0) const override
Determine which of the bits specified in Mask are known to be either zero or one and return them in t...
bool hasAndNotCompare(SDValue V) const override
Return true if the target should transform: (X & Y) == Y —> (~X & Y) == 0 (X & Y) !...
Register getExceptionSelectorRegister(const Constant *PersonalityFn) const override
If a physical register, this returns the register that receives the exception typeid on entry to a la...
TargetLoweringBase::LegalizeTypeAction getPreferredVectorAction(MVT VT) const override
Return the preferred vector type legalization action.
EVT getPromotedVTForPredicate(EVT VT) const
bool isShuffleMaskLegal(ArrayRef< int > M, EVT VT) const override
Return true if the given shuffle mask can be codegen'd directly, or if it should be stack expanded.
unsigned getVaListSizeInBits(const DataLayout &DL) const override
Returns the size of the platform's va_list object.
void insertCopiesSplitCSR(MachineBasicBlock *Entry, const SmallVectorImpl< MachineBasicBlock * > &Exits) const override
Insert explicit copies in entry and exit blocks.
int64_t getPreferredLargeGEPBaseOffset(int64_t MinOffset, int64_t MaxOffset) const override
Return the prefered common base offset.
bool shouldInsertTrailingFenceForAtomicStore(const Instruction *I) const override
Whether AtomicExpandPass should automatically insert a trailing fence without reducing the ordering f...
bool shouldExpandCttzElements(EVT VT) const override
Return true if the @llvm.experimental.cttz.elts intrinsic should be expanded using generic code in Se...
MachineBasicBlock * EmitTileLoad(unsigned Opc, unsigned BaseReg, MachineInstr &MI, MachineBasicBlock *BB) const
unsigned getNumInterleavedAccesses(VectorType *VecTy, const DataLayout &DL, bool UseScalable) const
Returns the number of interleaved accesses that will be generated when lowering accesses of the given...
bool shouldConvertConstantLoadToIntImm(const APInt &Imm, Type *Ty) const override
Returns true if it is beneficial to convert a load of a constant to just the constant itself.
unsigned getNumRegistersForCallingConv(LLVMContext &Context, CallingConv::ID CC, EVT VT) const override
Certain targets require unusual breakdowns of certain types.
SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const override
Provide custom lowering hooks for some operations.
bool shouldConvertFpToSat(unsigned Op, EVT FPVT, EVT VT) const override
Should we generate fp_to_si_sat and fp_to_ui_sat from type FPVT to type VT from min(max(fptoi)) satur...
bool isIntDivCheap(EVT VT, AttributeList Attr) const override
Return true if integer divide is usually cheaper than a sequence of several shifts,...
bool shouldRemoveRedundantExtend(SDValue Op) const override
Return true (the default) if it is profitable to remove a sext_inreg(x) where the sext is redundant,...
CCAssignFn * CCAssignFnForReturn(CallingConv::ID CC) const
Selects the correct CCAssignFn for a given CallingConvention value.
EVT getSetCCResultType(const DataLayout &DL, LLVMContext &Context, EVT VT) const override
Return the ISD::SETCC ValueType.
bool optimizeExtendOrTruncateConversion(Instruction *I, Loop *L, const TargetTransformInfo &TTI) const override
Try to optimize extending or truncating conversion instructions (like zext, trunc,...
FastISel * createFastISel(FunctionLoweringInfo &funcInfo, const TargetLibraryInfo *libInfo) const override
This method returns a target specific FastISel object, or null if the target does not support "fast" ...
CCAssignFn * CCAssignFnForCall(CallingConv::ID CC, bool IsVarArg) const
Selects the correct CCAssignFn for a given CallingConvention value.
MachineMemOperand::Flags getTargetMMOFlags(const Instruction &I) const override
This callback is used to inspect load/store instructions and add target-specific MachineMemOperand fl...
bool hasInlineStackProbe(const MachineFunction &MF) const override
True if stack clash protection is enabled for this functions.
bool isLegalICmpImmediate(int64_t) const override
Return true if the specified immediate is legal icmp immediate, that is the target has icmp instructi...
EVT getOptimalMemOpType(const MemOp &Op, const AttributeList &FuncAttributes) const override
Returns the target specific optimal type for load and store operations as a result of memset,...
Value * emitStoreConditional(IRBuilderBase &Builder, Value *Val, Value *Addr, AtomicOrdering Ord) const override
Perform a store-conditional operation to Addr.
bool preferIncOfAddToSubOfNot(EVT VT) const override
These two forms are equivalent: sub y, (xor x, -1) add (add x, 1), y The variant with two add's is IR...
TargetLoweringBase::AtomicExpansionKind shouldExpandAtomicLoadInIR(LoadInst *LI) const override
Returns how the given (atomic) load should be expanded by the IR-level AtomicExpand pass.
MachineBasicBlock * EmitZAInstr(unsigned Opc, unsigned BaseReg, MachineInstr &MI, MachineBasicBlock *BB, bool HasTile) const
ShiftLegalizationStrategy preferredShiftLegalizationStrategy(SelectionDAG &DAG, SDNode *N, unsigned ExpansionFactor) const override
bool isOpSuitableForLSE128(const Instruction *I) const
bool lowerInterleavedLoad(LoadInst *LI, ArrayRef< ShuffleVectorInst * > Shuffles, ArrayRef< unsigned > Indices, unsigned Factor) const override
Lower an interleaved load into a ldN intrinsic.
bool isVScaleKnownToBeAPowerOfTwo() const override
Return true only if vscale must be a power of two.
const char * getTargetNodeName(unsigned Opcode) const override
This method returns the name of a target specific DAG node.
TargetLoweringBase::AtomicExpansionKind shouldExpandAtomicCmpXchgInIR(AtomicCmpXchgInst *AI) const override
Returns how the given atomic cmpxchg should be expanded by the IR-level AtomicExpand pass.
bool shouldSinkOperands(Instruction *I, SmallVectorImpl< Use * > &Ops) const override
Check if sinking I's operands to I's basic block is profitable, because the operands can be folded in...
bool fallBackToDAGISel(const Instruction &Inst) const override
bool getTgtMemIntrinsic(IntrinsicInfo &Info, const CallInst &I, MachineFunction &MF, unsigned Intrinsic) const override
getTgtMemIntrinsic - Represent NEON load and store intrinsics as MemIntrinsicNodes.
Function * getSSPStackGuardCheck(const Module &M) const override
If the target has a standard stack protection check function that performs validation and error handl...
bool shouldFormOverflowOp(unsigned Opcode, EVT VT, bool MathUsed) const override
Try to convert math with an overflow comparison into the corresponding DAG node operation.
TargetLoweringBase::AtomicExpansionKind shouldExpandAtomicRMWInIR(AtomicRMWInst *AI) const override
Returns how the IR-level AtomicExpand pass should expand the given AtomicRMW, if at all.
Value * createComplexDeinterleavingIR(IRBuilderBase &B, ComplexDeinterleavingOperation OperationType, ComplexDeinterleavingRotation Rotation, Value *InputA, Value *InputB, Value *Accumulator=nullptr) const override
Create the IR node for the given complex deinterleaving operation.
bool allowsMisalignedMemoryAccesses(EVT VT, unsigned AddrSpace=0, Align Alignment=Align(1), MachineMemOperand::Flags Flags=MachineMemOperand::MONone, unsigned *Fast=nullptr) const override
Returns true if the target allows unaligned memory accesses of the specified type.
unsigned getMaxSupportedInterleaveFactor() const override
Get the maximum supported factor for interleaved memory accesses.
bool isLegalInterleavedAccessType(VectorType *VecTy, const DataLayout &DL, bool &UseScalable) const
Returns true if VecTy is a legal interleaved access type.
void insertSSPDeclarations(Module &M) const override
Inserts necessary declarations for SSP (stack protection) purpose.
bool functionArgumentNeedsConsecutiveRegisters(Type *Ty, CallingConv::ID CallConv, bool isVarArg, const DataLayout &DL) const override
For some targets, an LLVM struct type must be broken down into multiple simple types,...
Value * emitLoadLinked(IRBuilderBase &Builder, Type *ValueTy, Value *Addr, AtomicOrdering Ord) const override
Perform a load-linked operation on Addr, returning a "Value *" with the corresponding pointee type.
MachineBasicBlock * EmitLoweredCatchRet(MachineInstr &MI, MachineBasicBlock *BB) const
bool isComplexDeinterleavingSupported() const override
Does this target support complex deinterleaving.
bool isZExtFree(Type *Ty1, Type *Ty2) const override
Return true if any actual instruction that defines a value of type FromTy implicitly zero-extends the...
EVT getAsmOperandValueType(const DataLayout &DL, Type *Ty, bool AllowUnknown=false) const override
SDValue ReconstructShuffle(SDValue Op, SelectionDAG &DAG) const
MachineBasicBlock * EmitZero(MachineInstr &MI, MachineBasicBlock *BB) const
SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const override
This method will be invoked for all target nodes and for any target-independent nodes that the target...
bool useLoadStackGuardNode() const override
If this function returns true, SelectionDAGBuilder emits a LOAD_STACK_GUARD node when it is lowering ...
Value * getSafeStackPointerLocation(IRBuilderBase &IRB) const override
If the target has a standard location for the unsafe stack pointer, returns the address of that locat...
bool isMaskAndCmp0FoldingBeneficial(const Instruction &AndI) const override
Return if the target supports combining a chain like:
bool isProfitableToHoist(Instruction *I) const override
Check if it is profitable to hoist instruction in then/else to if.
bool isOpSuitableForRCPC3(const Instruction *I) const
bool shouldReduceLoadWidth(SDNode *Load, ISD::LoadExtType ExtTy, EVT NewVT) const override
Return true if it is profitable to reduce a load to a smaller type.
MVT getPointerTy(const DataLayout &DL, uint32_t AS=0) const override
Return the pointer type for the given address space, defaults to the pointer type from the data layou...
bool isCheapToSpeculateCttz(Type *) const override
Return true if it is cheap to speculate a call to intrinsic cttz.
bool lowerInterleavedStore(StoreInst *SI, ShuffleVectorInst *SVI, unsigned Factor) const override
Lower an interleaved store into a stN intrinsic.
unsigned getRedZoneSize(const Function &F) const
bool isFMAFasterThanFMulAndFAdd(const MachineFunction &MF, EVT VT) const override
Return true if an FMA operation is faster than a pair of fmul and fadd instructions.
MachineBasicBlock * EmitZTInstr(MachineInstr &MI, MachineBasicBlock *BB, unsigned Opcode, bool Op0IsDef) const
bool hasAndNot(SDValue Y) const override
Return true if the target has a bitwise and-not operation: X = ~A & B This can be used to simplify se...
MachineBasicBlock * EmitFill(MachineInstr &MI, MachineBasicBlock *BB) const
bool isCheapToSpeculateCtlz(Type *) const override
Return true if it is cheap to speculate a call to intrinsic ctlz.
bool shouldInsertFencesForAtomic(const Instruction *I) const override
Whether AtomicExpandPass should automatically insert fences and reduce ordering for this atomic.
bool isReassocProfitable(SelectionDAG &DAG, SDValue N0, SDValue N1) const override
Control the following reassociation of operands: (op (op x, c1), y) -> (op (op x, y),...
TargetLoweringBase::AtomicExpansionKind shouldExpandAtomicStoreInIR(StoreInst *SI) const override
Returns how the given (atomic) store should be expanded by the IR-level AtomicExpand pass into.
MachineBasicBlock * EmitF128CSEL(MachineInstr &MI, MachineBasicBlock *BB) const
LLT getOptimalMemOpLLT(const MemOp &Op, const AttributeList &FuncAttributes) const override
LLT returning variant.
bool isDesirableToPullExtFromShl(const MachineInstr &MI) const override
GlobalISel - return true if it's profitable to perform the combine: shl ([sza]ext x),...
bool shouldProduceAndByConstByHoistingConstFromShiftsLHSOfAnd(SDValue X, ConstantSDNode *XC, ConstantSDNode *CC, SDValue Y, unsigned OldShiftOpcode, unsigned NewShiftOpcode, SelectionDAG &DAG) const override
Given the pattern (X & (C l>>/<< Y)) ==/!= 0 return true if it should be transformed into: ((X <</l>>...
bool isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const override
Return true if folding a constant offset with the given GlobalAddress is legal.
bool needsFixedCatchObjects() const override
Used for exception handling on Win64.
Register getExceptionPointerRegister(const Constant *PersonalityFn) const override
If a physical register, this returns the register that receives the exception address on entry to an ...
bool lowerDeinterleaveIntrinsicToLoad(IntrinsicInst *DI, LoadInst *LI) const override
Lower a deinterleave intrinsic to a target specific load intrinsic.
unsigned getVectorTypeBreakdownForCallingConv(LLVMContext &Context, CallingConv::ID CC, EVT VT, EVT &IntermediateVT, unsigned &NumIntermediates, MVT &RegisterVT) const override
Certain targets such as MIPS require that some types such as vectors are always broken down into scal...
Value * getIRStackGuard(IRBuilderBase &IRB) const override
If the target has a standard location for the stack protector cookie, returns the address of that loc...
bool targetShrinkDemandedConstant(SDValue Op, const APInt &DemandedBits, const APInt &DemandedElts, TargetLoweringOpt &TLO) const override
bool generateFMAsInMachineCombiner(EVT VT, CodeGenOptLevel OptLevel) const override
bool isComplexDeinterleavingOperationSupported(ComplexDeinterleavingOperation Operation, Type *Ty) const override
Does this target support complex deinterleaving with the given operation and type.
bool hasPairedLoad(EVT LoadedType, Align &RequiredAligment) const override
Return true if the target supplies and combines to a paired load two loaded values of type LoadedType...
bool isOpSuitableForLDPSTP(const Instruction *I) const
bool shouldFoldConstantShiftPairToMask(const SDNode *N, CombineLevel Level) const override
Return true if it is profitable to fold a pair of shifts into a mask.
bool isLegalAddImmediate(int64_t) const override
Return true if the specified immediate is legal add immediate, that is the target has add instruction...
bool shouldConsiderGEPOffsetSplit() const override
bool shouldTransformSignedTruncationCheck(EVT XVT, unsigned KeptBits) const override
Should we tranform the IR-optimal check for whether given truncation down into KeptBits would be trun...
bool isVectorClearMaskLegal(ArrayRef< int > M, EVT VT) const override
Similar to isShuffleMaskLegal.
const MCPhysReg * getScratchRegisters(CallingConv::ID CC) const override
Returns a 0 terminated array of registers that can be safely used as scratch registers.
void emitAtomicCmpXchgNoStoreLLBalance(IRBuilderBase &Builder) const override
MachineBasicBlock * EmitInstrWithCustomInserter(MachineInstr &MI, MachineBasicBlock *MBB) const override
This method should be implemented by targets that mark instructions with the 'usesCustomInserter' fla...
bool isExtractSubvectorCheap(EVT ResVT, EVT SrcVT, unsigned Index) const override
Return true if EXTRACT_SUBVECTOR is cheap for this result type with this index.
ArrayRef< MCPhysReg > getRoundingControlRegisters() const override
Returns a 0 terminated array of rounding control registers that can be attached into strict FP call.
MachineInstr * EmitKCFICheck(MachineBasicBlock &MBB, MachineBasicBlock::instr_iterator &MBBI, const TargetInstrInfo *TII) const override
bool isAllActivePredicate(SelectionDAG &DAG, SDValue N) const
bool isLegalAddressingMode(const DataLayout &DL, const AddrMode &AM, Type *Ty, unsigned AS, Instruction *I=nullptr) const override
Return true if the addressing mode represented by AM is legal for this target, for a load/store of th...
unsigned ComputeNumSignBitsForTargetNode(SDValue Op, const APInt &DemandedElts, const SelectionDAG &DAG, unsigned Depth) const override
This method can be implemented by targets that want to expose additional information about sign bits ...
bool isDesirableToCommuteXorWithShift(const SDNode *N) const override
Returns false if N is a bit extraction pattern of (X >> C) & Mask.
bool isDesirableToCommuteWithShift(const SDNode *N, CombineLevel Level) const override
Returns false if N is a bit extraction pattern of (X >> C) & Mask.
bool canMergeStoresTo(unsigned AddressSpace, EVT MemVT, const MachineFunction &MF) const override
Returns if it's reasonable to merge stores to MemVT size.
bool supportSwiftError() const override
Return true if the target supports swifterror attribute.
bool lowerInterleaveIntrinsicToStore(IntrinsicInst *II, StoreInst *SI) const override
Lower an interleave intrinsic to a target specific store intrinsic.
bool enableAggressiveFMAFusion(EVT VT) const override
Enable aggressive FMA fusion on targets that want it.
Value * getSDagStackGuard(const Module &M) const override
Return the variable that's previously inserted by insertSSPDeclarations, if any, otherwise return nul...
MVT getScalarShiftAmountTy(const DataLayout &DL, EVT) const override
Return the type to use for a scalar shift opcode, given the shifted amount type.
MachineBasicBlock * EmitDynamicProbedAlloc(MachineInstr &MI, MachineBasicBlock *MBB) const
SDValue changeStreamingMode(SelectionDAG &DAG, SDLoc DL, bool Enable, SDValue Chain, SDValue InGlue, unsigned Condition, SDValue PStateSM=SDValue()) const
If a change in streaming mode is required on entry to/return from a function call it emits and return...
bool shouldExpandGetActiveLaneMask(EVT VT, EVT OpVT) const override
Return true if the @llvm.get.active.lane.mask intrinsic should be expanded using generic code in Sele...
bool supportKCFIBundles() const override
Return true if the target supports kcfi operand bundles.
bool isMulAddWithConstProfitable(SDValue AddNode, SDValue ConstNode) const override
Return true if it may be profitable to transform (mul (add x, c1), c2) -> (add (mul x,...
bool useSVEForFixedLengthVectorVT(EVT VT, bool OverrideNEON=false) const
bool mergeStoresAfterLegalization(EVT VT) const override
SVE code generation for fixed length vectors does not custom lower BUILD_VECTOR.
Class for arbitrary precision integers.
ArrayRef - Represent a constant reference to an array (0 or more elements consecutively in memory),...
An instruction that atomically checks whether a specified value is in a memory location,...
an instruction that atomically reads a memory location, combines it with another value,...
CCState - This class holds information needed while lowering arguments and return values.
This class represents a function call, abstracting a target machine's calling convention.
This is an important base class in LLVM.
This class represents an Operation in the Expression.
A parsed version of the target data layout string in and methods for querying it.
This is a fast-path instruction selection class that generates poor code and doesn't support illegal ...
FunctionLoweringInfo - This contains information that is global to a function that is used when lower...
CallingConv::ID getCallingConv() const
getCallingConv()/setCallingConv(CC) - These method get and set the calling convention of this functio...
bool hasFnAttribute(Attribute::AttrKind Kind) const
Return true if the function has the attribute.
Common base class shared among various IRBuilders.
A wrapper class for inspecting calls to intrinsic functions.
This is an important class for using LLVM in a threaded context.
An instruction for reading from memory.
Represents a single loop in the control flow graph.
static MVT getIntegerVT(unsigned BitWidth)
Instructions::iterator instr_iterator
The MachineFrameInfo class represents an abstract stack frame until prolog/epilog code is inserted.
Function & getFunction()
Return the LLVM function that this machine code represents.
Representation of each machine instruction.
Flags
Flags values. These may be or'd together.
A Module instance is used to store all the information related to an LLVM module.
Wrapper class representing virtual and physical registers.
Wrapper class for IR location info (IR ordering and DebugLoc) to be passed into SDNode creation funct...
Represents one node in the SelectionDAG.
Unlike LLVM values, Selection DAG nodes may return multiple values as the result of a computation.
This is used to represent a portion of an LLVM function in a low-level Data Dependence DAG representa...
This instruction constructs a fixed permutation of two input vectors.
This class consists of common code factored out of the SmallVector class to reduce code duplication b...
An instruction for storing to memory.
StringRef - Represent a constant reference to a string, i.e.
TargetInstrInfo - Interface to description of machine instruction set.
Provides information about what library functions are available for the current target.
virtual bool shouldFormOverflowOp(unsigned Opcode, EVT VT, bool MathUsed) const
Try to convert math with an overflow comparison into the corresponding DAG node operation.
ShiftLegalizationStrategy
Return the preferred strategy to legalize tihs SHIFT instruction, with ExpansionFactor being the recu...
LegalizeTypeAction
This enum indicates whether a types are legal for a target, and if not, what action should be used to...
AtomicExpansionKind
Enum that specifies what an atomic load/AtomicRMWInst is expanded to, if at all.
This class defines information used to lower LLVM code to legal SelectionDAG operators that the targe...
virtual InlineAsm::ConstraintCode getInlineAsmMemConstraint(StringRef ConstraintCode) const
Primary interface to the complete machine description for the target machine.
TargetRegisterInfo base class - We assume that the target defines a static array of TargetRegisterDes...
The instances of the Type class are immutable: once they are created, they are never changed.
LLVM Value Representation.
Base class of all SIMD vector types.
constexpr ScalarTy getFixedValue() const
constexpr bool isScalable() const
Returns whether the quantity is scaled by a runtime quantity (vscale).
@ GLDFF1S_SXTW_MERGE_ZERO
@ GLDFF1_SCALED_MERGE_ZERO
@ GLD1_SXTW_SCALED_MERGE_ZERO
@ FP_EXTEND_MERGE_PASSTHRU
@ FP_ROUND_MERGE_PASSTHRU
@ GLDFF1_SXTW_SCALED_MERGE_ZERO
@ UINT_TO_FP_MERGE_PASSTHRU
@ FROUNDEVEN_MERGE_PASSTHRU
@ GLD1S_UXTW_SCALED_MERGE_ZERO
@ GLDNT1_INDEX_MERGE_ZERO
@ GLDFF1_UXTW_SCALED_MERGE_ZERO
@ FNEARBYINT_MERGE_PASSTHRU
@ GLDFF1S_SCALED_MERGE_ZERO
@ GLDFF1S_UXTW_SCALED_MERGE_ZERO
@ ZERO_EXTEND_INREG_MERGE_PASSTHRU
@ NVCAST
Natural vector cast.
@ BITREVERSE_MERGE_PASSTHRU
@ GLDFF1S_UXTW_MERGE_ZERO
@ SIGN_EXTEND_INREG_MERGE_PASSTHRU
@ GLDFF1S_SXTW_SCALED_MERGE_ZERO
@ GLD1S_SCALED_MERGE_ZERO
@ SINT_TO_FP_MERGE_PASSTHRU
@ GLD1_UXTW_SCALED_MERGE_ZERO
@ GLD1S_SXTW_SCALED_MERGE_ZERO
ArrayRef< MCPhysReg > getFPRArgRegs()
Rounding
Possible values of current rounding mode, which is specified in bits 23:22 of FPCR.
const unsigned StackProbeMaxLoopUnroll
Maximum number of iterations to unroll for a constant size probing loop.
const unsigned StackProbeMaxUnprobedStack
Maximum allowed number of unprobed bytes above SP at an ABI boundary.
const unsigned RoundingBitsPos
ArrayRef< MCPhysReg > getGPRArgRegs()
FastISel * createFastISel(FunctionLoweringInfo &funcInfo, const TargetLibraryInfo *libInfo)
@ CXX_FAST_TLS
Used for access functions.
@ Fast
Attempts to make calls as fast as possible (e.g.
@ BUILTIN_OP_END
BUILTIN_OP_END - This must be the last enum value in this list.
static const int FIRST_TARGET_MEMORY_OPCODE
FIRST_TARGET_MEMORY_OPCODE - Target-specific pre-isel operations which do not reference a specific me...
MemIndexedMode
MemIndexedMode enum - This enum defines the load / store indexed addressing modes.
static const int FIRST_TARGET_STRICTFP_OPCODE
FIRST_TARGET_STRICTFP_OPCODE - Target-specific pre-isel operations which cannot raise FP exceptions s...
CondCode
ISD::CondCode enum - These are ordered carefully to make the bitfields below work out,...
LoadExtType
LoadExtType enum - This enum defines the three variants of LOADEXT (load with extension).
This is an optimization pass for GlobalISel generic memory operations.
ComplexDeinterleavingOperation
CodeGenOptLevel
Code generation optimization level.
AtomicOrdering
Atomic ordering for LLVM's memory model.
ComplexDeinterleavingRotation
bool CCAssignFn(unsigned ValNo, MVT ValVT, MVT LocVT, CCValAssign::LocInfo LocInfo, ISD::ArgFlagsTy ArgFlags, CCState &State)
CCAssignFn - This function assigns a location for Val, updating State to reflect the change.
DWARFExpression::Operation Op
This struct is a compact representation of a valid (non-zero power of two) alignment.
Represent subnormal handling kind for floating point instruction inputs and outputs.
TypeSize getSizeInBits() const
Return the size of the specified value type in bits.
bool isVector() const
Return true if this is a vector value type.