#include "llvm/CodeGen/GlobalISel/CombinerHelper.h"
Public Member Functions | |
| CombinerHelper (GISelChangeObserver &Observer, MachineIRBuilder &B, bool IsPreLegalize, GISelValueTracking *VT=nullptr, MachineDominatorTree *MDT=nullptr, const LegalizerInfo *LI=nullptr) | |
| GISelValueTracking * | getValueTracking () const |
| MachineIRBuilder & | getBuilder () const |
| const TargetLowering & | getTargetLowering () const |
| const MachineFunction & | getMachineFunction () const |
| const DataLayout & | getDataLayout () const |
| LLVMContext & | getContext () const |
| bool | isPreLegalize () const |
| bool | isLegal (const LegalityQuery &Query) const |
| bool | isLegalOrBeforeLegalizer (const LegalityQuery &Query) const |
| bool | isLegalOrHasWidenScalar (const LegalityQuery &Query) const |
| bool | isConstantLegalOrBeforeLegalizer (const LLT Ty) const |
| void | replaceRegWith (MachineRegisterInfo &MRI, Register FromReg, Register ToReg) const |
| MachineRegisterInfo::replaceRegWith() and inform the observer of the changes. | |
| void | replaceRegOpWith (MachineRegisterInfo &MRI, MachineOperand &FromRegOp, Register ToReg) const |
| Replace a single register operand with a new register and inform the observer of the changes. | |
| void | replaceOpcodeWith (MachineInstr &FromMI, unsigned ToOpcode) const |
| Replace the opcode in instruction with a new opcode and inform the observer of the changes. | |
| const RegisterBank * | getRegBank (Register Reg) const |
Get the register bank of Reg. | |
| void | setRegBank (Register Reg, const RegisterBank *RegBank) const |
Set the register bank of Reg. | |
| bool | tryCombineCopy (MachineInstr &MI) const |
If MI is COPY, try to combine it. | |
| bool | matchCombineCopy (MachineInstr &MI) const |
| void | applyCombineCopy (MachineInstr &MI) const |
| bool | isPredecessor (const MachineInstr &DefMI, const MachineInstr &UseMI) const |
Returns true if DefMI precedes UseMI or they are the same instruction. | |
| bool | dominates (const MachineInstr &DefMI, const MachineInstr &UseMI) const |
Returns true if DefMI dominates UseMI. | |
| bool | tryCombineExtendingLoads (MachineInstr &MI) const |
If MI is extend that consumes the result of a load, try to combine it. | |
| bool | matchCombineExtendingLoads (MachineInstr &MI, PreferredTuple &MatchInfo) const |
| void | applyCombineExtendingLoads (MachineInstr &MI, PreferredTuple &MatchInfo) const |
| bool | matchCombineLoadWithAndMask (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Match (and (load x), mask) -> zextload x. | |
| bool | matchCombineExtractedVectorLoad (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Combine a G_EXTRACT_VECTOR_ELT of a load into a narrowed load. | |
| bool | matchCombineIndexedLoadStore (MachineInstr &MI, IndexedLoadStoreMatchInfo &MatchInfo) const |
| void | applyCombineIndexedLoadStore (MachineInstr &MI, IndexedLoadStoreMatchInfo &MatchInfo) const |
| bool | matchSextTruncSextLoad (MachineInstr &MI) const |
| void | applySextTruncSextLoad (MachineInstr &MI) const |
| bool | matchSextInRegOfLoad (MachineInstr &MI, std::tuple< Register, unsigned > &MatchInfo) const |
| Match sext_inreg(load p), imm -> sextload p. | |
| void | applySextInRegOfLoad (MachineInstr &MI, std::tuple< Register, unsigned > &MatchInfo) const |
| bool | matchCombineDivRem (MachineInstr &MI, MachineInstr *&OtherMI) const |
| Try to combine G_[SU]DIV and G_[SU]REM into a single G_[SU]DIVREM when their source operands are identical. | |
| void | applyCombineDivRem (MachineInstr &MI, MachineInstr *&OtherMI) const |
| bool | matchOptBrCondByInvertingCond (MachineInstr &MI, MachineInstr *&BrCond) const |
| If a brcond's true block is not the fallthrough, make it so by inverting the condition and swapping operands. | |
| void | applyOptBrCondByInvertingCond (MachineInstr &MI, MachineInstr *&BrCond) const |
| bool | matchCombineConcatVectors (MachineInstr &MI, SmallVector< Register > &Ops) const |
If MI is G_CONCAT_VECTORS, try to combine it. | |
| void | applyCombineConcatVectors (MachineInstr &MI, SmallVector< Register > &Ops) const |
Replace MI with a flattened build_vector with Ops or an implicit_def if Ops is empty. | |
| bool | matchCombineShuffleConcat (MachineInstr &MI, SmallVector< Register > &Ops) const |
| void | applyCombineShuffleConcat (MachineInstr &MI, SmallVector< Register > &Ops) const |
Replace MI with a flattened build_vector with Ops or an implicit_def if Ops is empty. | |
| void | applyCombineShuffleToBuildVector (MachineInstr &MI) const |
Replace MI with a build_vector. | |
| bool | tryCombineShuffleVector (MachineInstr &MI) const |
| Try to combine G_SHUFFLE_VECTOR into G_CONCAT_VECTORS. | |
| bool | matchCombineShuffleVector (MachineInstr &MI, SmallVectorImpl< Register > &Ops) const |
Check if the G_SHUFFLE_VECTOR MI can be replaced by a concat_vectors. | |
| void | applyCombineShuffleVector (MachineInstr &MI, ArrayRef< Register > Ops) const |
Replace MI with a concat_vectors with Ops. | |
| bool | tryCombineMemCpyFamily (MachineInstr &MI, unsigned MaxLen=0) const |
| Optimize memcpy intrinsics et al, e.g. | |
| bool | matchPtrAddImmedChain (MachineInstr &MI, PtrAddChain &MatchInfo) const |
| void | applyPtrAddImmedChain (MachineInstr &MI, PtrAddChain &MatchInfo) const |
| bool | matchShiftImmedChain (MachineInstr &MI, RegisterImmPair &MatchInfo) const |
| Fold (shift (shift base, x), y) -> (shift base (x+y)) | |
| void | applyShiftImmedChain (MachineInstr &MI, RegisterImmPair &MatchInfo) const |
| bool | matchShiftOfShiftedLogic (MachineInstr &MI, ShiftOfShiftedLogic &MatchInfo) const |
| If we have a shift-by-constant of a bitwise logic op that itself has a shift-by-constant operand with identical opcode, we may be able to convert that into 2 independent shifts followed by the logic op. | |
| void | applyShiftOfShiftedLogic (MachineInstr &MI, ShiftOfShiftedLogic &MatchInfo) const |
| bool | matchCommuteShift (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| bool | matchLshrOfTruncOfLshr (MachineInstr &MI, LshrOfTruncOfLshr &MatchInfo, MachineInstr &ShiftMI) const |
| Fold (lshr (trunc (lshr x, C1)), C2) -> trunc (shift x, (C1 + C2)) | |
| void | applyLshrOfTruncOfLshr (MachineInstr &MI, LshrOfTruncOfLshr &MatchInfo) const |
| bool | matchCombineMulToShl (MachineInstr &MI, unsigned &ShiftVal) const |
| Transform a multiply by a power-of-2 value to a left shift. | |
| void | applyCombineMulToShl (MachineInstr &MI, unsigned &ShiftVal) const |
| bool | matchCombineSubToAdd (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| bool | matchCombineShlOfExtend (MachineInstr &MI, RegisterImmPair &MatchData) const |
| void | applyCombineShlOfExtend (MachineInstr &MI, const RegisterImmPair &MatchData) const |
| bool | matchCombineMergeUnmerge (MachineInstr &MI, Register &MatchInfo) const |
| Fold away a merge of an unmerge of the corresponding values. | |
| bool | matchCombineShiftToUnmerge (MachineInstr &MI, unsigned TargetShiftSize, unsigned &ShiftVal) const |
| Reduce a shift by a constant to an unmerge and a shift on a half sized type. | |
| void | applyCombineShiftToUnmerge (MachineInstr &MI, const unsigned &ShiftVal) const |
| bool | tryCombineShiftToUnmerge (MachineInstr &MI, unsigned TargetShiftAmount) const |
| bool | matchCombineUnmergeMergeToPlainValues (MachineInstr &MI, SmallVectorImpl< Register > &Operands) const |
| Transform <ty,...> G_UNMERGE(G_MERGE ty X, Y, Z) -> ty X, Y, Z. | |
| void | applyCombineUnmergeMergeToPlainValues (MachineInstr &MI, SmallVectorImpl< Register > &Operands) const |
| bool | matchCombineUnmergeConstant (MachineInstr &MI, SmallVectorImpl< APInt > &Csts) const |
| Transform G_UNMERGE Constant -> Constant1, Constant2, ... | |
| void | applyCombineUnmergeConstant (MachineInstr &MI, SmallVectorImpl< APInt > &Csts) const |
| bool | matchCombineUnmergeUndef (MachineInstr &MI, std::function< void(MachineIRBuilder &)> &MatchInfo) const |
| Transform G_UNMERGE G_IMPLICIT_DEF -> G_IMPLICIT_DEF, G_IMPLICIT_DEF, ... | |
| bool | matchCombineUnmergeWithDeadLanesToTrunc (MachineInstr &MI) const |
| Transform X, Y<dead> = G_UNMERGE Z -> X = G_TRUNC Z. | |
| void | applyCombineUnmergeWithDeadLanesToTrunc (MachineInstr &MI) const |
| bool | matchCombineUnmergeZExtToZExt (MachineInstr &MI) const |
| Transform X, Y = G_UNMERGE(G_ZEXT(Z)) -> X = G_ZEXT(Z); Y = G_CONSTANT 0. | |
| void | applyCombineUnmergeZExtToZExt (MachineInstr &MI) const |
| void | applyCombineConstantFoldFpUnary (MachineInstr &MI, const ConstantFP *Cst) const |
| Transform fp_instr(cst) to constant result of the fp operation. | |
| bool | matchCombineI2PToP2I (MachineInstr &MI, Register &Reg) const |
| Transform IntToPtr(PtrToInt(x)) to x if cast is in the same address space. | |
| void | applyCombineI2PToP2I (MachineInstr &MI, Register &Reg) const |
| void | applyCombineP2IToI2P (MachineInstr &MI, Register &Reg) const |
| Transform PtrToInt(IntToPtr(x)) to x. | |
| bool | matchCombineAddP2IToPtrAdd (MachineInstr &MI, std::pair< Register, bool > &PtrRegAndCommute) const |
| Transform G_ADD (G_PTRTOINT x), y -> G_PTRTOINT (G_PTR_ADD x, y) Transform G_ADD y, (G_PTRTOINT x) -> G_PTRTOINT (G_PTR_ADD x, y) | |
| void | applyCombineAddP2IToPtrAdd (MachineInstr &MI, std::pair< Register, bool > &PtrRegAndCommute) const |
| bool | matchCombineConstPtrAddToI2P (MachineInstr &MI, APInt &NewCst) const |
| void | applyCombineConstPtrAddToI2P (MachineInstr &MI, APInt &NewCst) const |
| bool | matchCombineAnyExtTrunc (MachineInstr &MI, Register &Reg) const |
| Transform anyext(trunc(x)) to x. | |
| bool | matchCombineZextTrunc (MachineInstr &MI, Register &Reg) const |
| Transform zext(trunc(x)) to x. | |
| bool | matchCombineTruncOfShift (MachineInstr &MI, std::pair< MachineInstr *, LLT > &MatchInfo) const |
| Transform trunc (shl x, K) to shl (trunc x), K if K < VT.getScalarSizeInBits(). | |
| void | applyCombineTruncOfShift (MachineInstr &MI, std::pair< MachineInstr *, LLT > &MatchInfo) const |
| bool | matchAnyExplicitUseIsUndef (MachineInstr &MI) const |
Return true if any explicit use operand on MI is defined by a G_IMPLICIT_DEF. | |
| bool | matchAllExplicitUsesAreUndef (MachineInstr &MI) const |
Return true if all register explicit use operands on MI are defined by a G_IMPLICIT_DEF. | |
| bool | matchUndefShuffleVectorMask (MachineInstr &MI) const |
Return true if a G_SHUFFLE_VECTOR instruction MI has an undef mask. | |
| bool | matchUndefStore (MachineInstr &MI) const |
Return true if a G_STORE instruction MI is storing an undef value. | |
| bool | matchUndefSelectCmp (MachineInstr &MI) const |
Return true if a G_SELECT instruction MI has an undef comparison. | |
| bool | matchInsertExtractVecEltOutOfBounds (MachineInstr &MI) const |
| Return true if a G_{EXTRACT,INSERT}_VECTOR_ELT has an out of range index. | |
| bool | matchConstantSelectCmp (MachineInstr &MI, unsigned &OpIdx) const |
Return true if a G_SELECT instruction MI has a constant comparison. | |
| void | replaceInstWithFConstant (MachineInstr &MI, double C) const |
Replace an instruction with a G_FCONSTANT with value C. | |
| void | replaceInstWithFConstant (MachineInstr &MI, ConstantFP *CFP) const |
Replace an instruction with an G_FCONSTANT with value CFP. | |
| void | replaceInstWithConstant (MachineInstr &MI, int64_t C) const |
Replace an instruction with a G_CONSTANT with value C. | |
| void | replaceInstWithConstant (MachineInstr &MI, APInt C) const |
Replace an instruction with a G_CONSTANT with value C. | |
| void | replaceInstWithUndef (MachineInstr &MI) const |
| Replace an instruction with a G_IMPLICIT_DEF. | |
| void | replaceSingleDefInstWithOperand (MachineInstr &MI, unsigned OpIdx) const |
Delete MI and replace all of its uses with its OpIdx-th operand. | |
| void | replaceSingleDefInstWithReg (MachineInstr &MI, Register Replacement) const |
Delete MI and replace all of its uses with Replacement. | |
| void | applyFunnelShiftConstantModulo (MachineInstr &MI) const |
Replaces the shift amount in MI with ShiftAmt % BW. | |
| bool | matchEqualDefs (const MachineOperand &MOP1, const MachineOperand &MOP2) const |
Return true if MOP1 and MOP2 are register operands are defined by equivalent instructions. | |
| bool | matchConstantOp (const MachineOperand &MOP, int64_t C) const |
Return true if MOP is defined by a G_CONSTANT or splat with a value equal to C. | |
| bool | matchConstantFPOp (const MachineOperand &MOP, double C) const |
Return true if MOP is defined by a G_FCONSTANT or splat with a value exactly equal to C. | |
| bool | matchConstantLargerBitWidth (MachineInstr &MI, unsigned ConstIdx) const |
Checks if constant at ConstIdx is larger than MI 's bitwidth. | |
| bool | matchSelectSameVal (MachineInstr &MI) const |
| Optimize (cond ? x : x) -> x. | |
| bool | matchBinOpSameVal (MachineInstr &MI) const |
| Optimize (x op x) -> x. | |
| bool | matchOperandIsUndef (MachineInstr &MI, unsigned OpIdx) const |
Check if operand OpIdx is undef. | |
| bool | matchOperandIsKnownToBeAPowerOfTwo (MachineInstr &MI, unsigned OpIdx) const |
Check if operand OpIdx is known to be a power of 2. | |
| void | eraseInst (MachineInstr &MI) const |
Erase MI. | |
| bool | matchSimplifyAddToSub (MachineInstr &MI, std::tuple< Register, Register > &MatchInfo) const |
| Return true if MI is a G_ADD which can be simplified to a G_SUB. | |
| void | applySimplifyAddToSub (MachineInstr &MI, std::tuple< Register, Register > &MatchInfo) const |
| bool | matchHoistLogicOpWithSameOpcodeHands (MachineInstr &MI, InstructionStepsMatchInfo &MatchInfo) const |
| Match (logic_op (op x...), (op y...)) -> (op (logic_op x, y)) | |
| void | applyBuildInstructionSteps (MachineInstr &MI, InstructionStepsMatchInfo &MatchInfo) const |
Replace MI with a series of instructions described in MatchInfo. | |
| bool | matchAshrShlToSextInreg (MachineInstr &MI, std::tuple< Register, int64_t > &MatchInfo) const |
| Match ashr (shl x, C), C -> sext_inreg (C) | |
| void | applyAshShlToSextInreg (MachineInstr &MI, std::tuple< Register, int64_t > &MatchInfo) const |
| bool | matchOverlappingAnd (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Fold and(and(x, C1), C2) -> C1&C2 ? and(x, C1&C2) : 0. | |
| bool | matchRedundantAnd (MachineInstr &MI, Register &Replacement) const |
| bool | matchRedundantOr (MachineInstr &MI, Register &Replacement) const |
| bool | matchRedundantSExtInReg (MachineInstr &MI) const |
| bool | matchNotCmp (MachineInstr &MI, SmallVectorImpl< Register > &RegsToNegate) const |
| Combine inverting a result of a compare into the opposite cond code. | |
| void | applyNotCmp (MachineInstr &MI, SmallVectorImpl< Register > &RegsToNegate) const |
| bool | matchXorOfAndWithSameReg (MachineInstr &MI, std::pair< Register, Register > &MatchInfo) const |
| Fold (xor (and x, y), y) -> (and (not x), y) {. | |
| void | applyXorOfAndWithSameReg (MachineInstr &MI, std::pair< Register, Register > &MatchInfo) const |
| bool | matchPtrAddZero (MachineInstr &MI) const |
| } | |
| void | applyPtrAddZero (MachineInstr &MI) const |
| void | applySimplifyURemByPow2 (MachineInstr &MI) const |
| Combine G_UREM x, (known power of 2) to an add and bitmasking. | |
| bool | matchFoldBinOpIntoSelect (MachineInstr &MI, unsigned &SelectOpNo) const |
| Push a binary operator through a select on constants. | |
| void | applyFoldBinOpIntoSelect (MachineInstr &MI, const unsigned &SelectOpNo) const |
SelectOperand is the operand in binary operator MI that is the select to fold. | |
| bool | matchCombineInsertVecElts (MachineInstr &MI, SmallVectorImpl< Register > &MatchInfo) const |
| void | applyCombineInsertVecElts (MachineInstr &MI, SmallVectorImpl< Register > &MatchInfo) const |
| bool | matchLoadOrCombine (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Match expression trees of the form. | |
| bool | matchExtendThroughPhis (MachineInstr &MI, MachineInstr *&ExtMI) const |
| void | applyExtendThroughPhis (MachineInstr &MI, MachineInstr *&ExtMI) const |
| bool | matchExtractVecEltBuildVec (MachineInstr &MI, Register &Reg) const |
| void | applyExtractVecEltBuildVec (MachineInstr &MI, Register &Reg) const |
| bool | matchExtractAllEltsFromBuildVector (MachineInstr &MI, SmallVectorImpl< std::pair< Register, MachineInstr * > > &MatchInfo) const |
| void | applyExtractAllEltsFromBuildVector (MachineInstr &MI, SmallVectorImpl< std::pair< Register, MachineInstr * > > &MatchInfo) const |
| void | applyBuildFn (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Use a function which takes in a MachineIRBuilder to perform a combine. | |
| void | applyBuildFnNoErase (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Use a function which takes in a MachineIRBuilder to perform a combine. | |
| bool | matchOrShiftToFunnelShift (MachineInstr &MI, bool AllowScalarConstants, BuildFnTy &MatchInfo) const |
| bool | matchFunnelShiftToRotate (MachineInstr &MI) const |
| Match an FSHL or FSHR that can be combined to a ROTR or ROTL rotate. | |
| void | applyFunnelShiftToRotate (MachineInstr &MI) const |
| bool | matchRotateOutOfRange (MachineInstr &MI) const |
| void | applyRotateOutOfRange (MachineInstr &MI) const |
| bool | matchCombineBuildUnmerge (MachineInstr &MI, MachineRegisterInfo &MRI, Register &UnmergeSrc) const |
| void | applyCombineBuildUnmerge (MachineInstr &MI, MachineRegisterInfo &MRI, MachineIRBuilder &B, Register &UnmergeSrc) const |
| bool | matchUseVectorTruncate (MachineInstr &MI, Register &MatchInfo) const |
| void | applyUseVectorTruncate (MachineInstr &MI, Register &MatchInfo) const |
| bool | matchICmpToTrueFalseKnownBits (MachineInstr &MI, int64_t &MatchInfo) const |
| bool | matchICmpToLHSKnownBits (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| bool | matchAndOrDisjointMask (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| bool | matchBitfieldExtractFromSExtInReg (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Form a G_SBFX from a G_SEXT_INREG fed by a right shift. | |
| bool | matchBitfieldExtractFromAnd (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Match: and (lshr x, cst), mask -> ubfx x, cst, width. | |
| bool | matchBitfieldExtractFromShr (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Match: shr (shl x, n), k -> sbfx/ubfx x, pos, width. | |
| bool | matchBitfieldExtractFromShrAnd (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Match: shr (and x, n), k -> ubfx x, pos, width. | |
| bool | matchReassocConstantInnerRHS (GPtrAdd &MI, MachineInstr *RHS, BuildFnTy &MatchInfo) const |
| bool | matchReassocFoldConstantsInSubTree (GPtrAdd &MI, MachineInstr *LHS, MachineInstr *RHS, BuildFnTy &MatchInfo) const |
| bool | matchReassocConstantInnerLHS (GPtrAdd &MI, MachineInstr *LHS, MachineInstr *RHS, BuildFnTy &MatchInfo) const |
| bool | matchReassocPtrAdd (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Reassociate pointer calculations with G_ADD involved, to allow better addressing mode usage. | |
| bool | tryReassocBinOp (unsigned Opc, Register DstReg, Register Op0, Register Op1, BuildFnTy &MatchInfo) const |
| Try to reassociate to reassociate operands of a commutative binop. | |
| bool | matchReassocCommBinOp (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Reassociate commutative binary operations like G_ADD. | |
| bool | matchConstantFoldCastOp (MachineInstr &MI, APInt &MatchInfo) const |
| Do constant folding when opportunities are exposed after MIR building. | |
| bool | matchConstantFoldBinOp (MachineInstr &MI, APInt &MatchInfo) const |
| Do constant folding when opportunities are exposed after MIR building. | |
| bool | matchConstantFoldFPBinOp (MachineInstr &MI, ConstantFP *&MatchInfo) const |
| Do constant FP folding when opportunities are exposed after MIR building. | |
| bool | matchConstantFoldFMA (MachineInstr &MI, ConstantFP *&MatchInfo) const |
| Constant fold G_FMA/G_FMAD. | |
| bool | matchNarrowBinopFeedingAnd (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| MachineInstr * | buildUDivOrURemUsingMul (MachineInstr &MI) const |
Given an G_UDIV MI or G_UREM MI expressing a divide by constant, return an expression that implements it by multiplying by a magic number. | |
| bool | matchUDivOrURemByConst (MachineInstr &MI) const |
| Combine G_UDIV or G_UREM by constant into a multiply by magic constant. | |
| void | applyUDivOrURemByConst (MachineInstr &MI) const |
| MachineInstr * | buildSDivOrSRemUsingMul (MachineInstr &MI) const |
Given an G_SDIV MI or G_SREM MI expressing a signed divide by constant, return an expression that implements it by multiplying by a magic number. | |
| bool | matchSDivOrSRemByConst (MachineInstr &MI) const |
| Combine G_SDIV or G_SREM by constant into a multiply by magic constant. | |
| void | applySDivOrSRemByConst (MachineInstr &MI) const |
| bool | matchDivByPow2 (MachineInstr &MI, bool IsSigned) const |
Given an G_SDIV MI expressing a signed divided by a pow2 constant, return expressions that implements it by shifting. | |
| void | applySDivByPow2 (MachineInstr &MI) const |
| void | applyUDivByPow2 (MachineInstr &MI) const |
Given an G_UDIV MI expressing an unsigned divided by a pow2 constant, return expressions that implements it by shifting. | |
| bool | matchUMulHToLShr (MachineInstr &MI) const |
| void | applyUMulHToLShr (MachineInstr &MI) const |
| bool | matchTruncSSatS (MachineInstr &MI, Register &MatchInfo) const |
| void | applyTruncSSatS (MachineInstr &MI, Register &MatchInfo) const |
| bool | matchTruncSSatU (MachineInstr &MI, Register &MatchInfo) const |
| void | applyTruncSSatU (MachineInstr &MI, Register &MatchInfo) const |
| bool | matchTruncUSatU (MachineInstr &MI, MachineInstr &MinMI) const |
| bool | matchTruncUSatUToFPTOUISat (MachineInstr &MI, MachineInstr &SrcMI) const |
| bool | tryCombine (MachineInstr &MI) const |
Try to transform MI by using all of the above combine functions. | |
| bool | tryEmitMemcpyInline (MachineInstr &MI) const |
| Emit loads and stores that perform the given memcpy. | |
| bool | matchMulOBy2 (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Match: (G_UMULO x, 2) -> (G_UADDO x, x) (G_SMULO x, 2) -> (G_SADDO x, x) | |
| bool | matchMulOBy0 (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Match: (G_*MULO x, 0) -> 0 + no carry out. | |
| bool | matchAddEToAddO (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Match: (G_*ADDE x, y, 0) -> (G_*ADDO x, y) (G_*SUBE x, y, 0) -> (G_*SUBO x, y) | |
| bool | matchRedundantNegOperands (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Transform (fadd x, fneg(y)) -> (fsub x, y) (fadd fneg(x), y) -> (fsub y, x) (fsub x, fneg(y)) -> (fadd x, y) (fmul fneg(x), fneg(y)) -> (fmul x, y) (fdiv fneg(x), fneg(y)) -> (fdiv x, y) (fmad fneg(x), fneg(y), z) -> (fmad x, y, z) (fma fneg(x), fneg(y), z) -> (fma x, y, z) | |
| bool | matchFsubToFneg (MachineInstr &MI, Register &MatchInfo) const |
| void | applyFsubToFneg (MachineInstr &MI, Register &MatchInfo) const |
| bool | canCombineFMadOrFMA (MachineInstr &MI, bool &AllowFusionGlobally, bool &HasFMAD, bool &Aggressive, bool CanReassociate=false) const |
| bool | matchCombineFAddFMulToFMadOrFMA (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Transform (fadd (fmul x, y), z) -> (fma x, y, z) (fadd (fmul x, y), z) -> (fmad x, y, z) | |
| bool | matchCombineFAddFpExtFMulToFMadOrFMA (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Transform (fadd (fpext (fmul x, y)), z) -> (fma (fpext x), (fpext y), z) (fadd (fpext (fmul x, y)), z) -> (fmad (fpext x), (fpext y), z) | |
| bool | matchCombineFAddFMAFMulToFMadOrFMA (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Transform (fadd (fma x, y, (fmul u, v)), z) -> (fma x, y, (fma u, v, z)) (fadd (fmad x, y, (fmul u, v)), z) -> (fmad x, y, (fmad u, v, z)) | |
| bool | matchCombineFAddFpExtFMulToFMadOrFMAAggressive (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| bool | matchCombineFSubFMulToFMadOrFMA (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Transform (fsub (fmul x, y), z) -> (fma x, y, -z) (fsub (fmul x, y), z) -> (fmad x, y, -z) | |
| bool | matchCombineFSubFNegFMulToFMadOrFMA (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Transform (fsub (fneg (fmul, x, y)), z) -> (fma (fneg x), y, (fneg z)) (fsub (fneg (fmul, x, y)), z) -> (fmad (fneg x), y, (fneg z)) | |
| bool | matchCombineFSubFpExtFMulToFMadOrFMA (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Transform (fsub (fpext (fmul x, y)), z) -> (fma (fpext x), (fpext y), (fneg z)) (fsub (fpext (fmul x, y)), z) -> (fmad (fpext x), (fpext y), (fneg z)) | |
| bool | matchCombineFSubFpExtFNegFMulToFMadOrFMA (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Transform (fsub (fpext (fneg (fmul x, y))), z) -> (fneg (fma (fpext x), (fpext y), z)) (fsub (fpext (fneg (fmul x, y))), z) -> (fneg (fmad (fpext x), (fpext y), z)) | |
| bool | matchCombineFMinMaxNaN (MachineInstr &MI, unsigned &Info) const |
| bool | matchRepeatedFPDivisor (MachineInstr &MI, SmallVector< MachineInstr * > &MatchInfo) const |
| void | applyRepeatedFPDivisor (SmallVector< MachineInstr * > &MatchInfo) const |
| bool | matchAddSubSameReg (MachineInstr &MI, Register &Src) const |
| Transform G_ADD(x, G_SUB(y, x)) to y. | |
| bool | matchBuildVectorIdentityFold (MachineInstr &MI, Register &MatchInfo) const |
| bool | matchTruncBuildVectorFold (MachineInstr &MI, Register &MatchInfo) const |
| bool | matchTruncLshrBuildVectorFold (MachineInstr &MI, Register &MatchInfo) const |
| bool | matchSubAddSameReg (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Transform: (x + y) - y -> x (x + y) - x -> y x - (y + x) -> 0 - y x - (x + z) -> 0 - z. | |
| bool | matchSimplifySelectToMinMax (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| bool | matchRedundantBinOpInEquality (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Transform: (X + Y) == X -> Y == 0 (X - Y) == X -> Y == 0 (X ^ Y) == X -> Y == 0 (X + Y) != X -> Y != 0 (X - Y) != X -> Y != 0 (X ^ Y) != X -> Y != 0. | |
| bool | matchShiftsTooBig (MachineInstr &MI, std::optional< int64_t > &MatchInfo) const |
| Match shifts greater or equal to the range (the bitwidth of the result datatype, or the effective bitwidth of the source value). | |
| bool | matchCommuteConstantToRHS (MachineInstr &MI) const |
| Match constant LHS ops that should be commuted. | |
| bool | matchSextOfTrunc (const MachineOperand &MO, BuildFnTy &MatchInfo) const |
| Combine sext of trunc. | |
| bool | matchZextOfTrunc (const MachineOperand &MO, BuildFnTy &MatchInfo) const |
| Combine zext of trunc. | |
| bool | matchNonNegZext (const MachineOperand &MO, BuildFnTy &MatchInfo) const |
| Combine zext nneg to sext. | |
| bool | matchCommuteFPConstantToRHS (MachineInstr &MI) const |
| Match constant LHS FP ops that should be commuted. | |
| void | applyCommuteBinOpOperands (MachineInstr &MI) const |
| bool | matchSelectIMinMax (const MachineOperand &MO, BuildFnTy &MatchInfo) const |
| Combine select to integer min/max. | |
| bool | matchSimplifyNegMinMax (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Tranform (neg (min/max x, (neg x))) into (max/min x, (neg x)). | |
| bool | matchSelect (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Combine selects. | |
| bool | matchAnd (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Combine ands. | |
| bool | matchOr (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Combine ors. | |
| bool | matchNarrowBinop (const MachineInstr &TruncMI, const MachineInstr &BinopMI, BuildFnTy &MatchInfo) const |
| trunc (binop X, C) --> binop (trunc X, trunc C). | |
| bool | matchCastOfInteger (const MachineInstr &CastMI, APInt &MatchInfo) const |
| bool | matchAddOverflow (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Combine addos. | |
| bool | matchExtractVectorElement (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Combine extract vector element. | |
| bool | matchExtractVectorElementWithBuildVector (const MachineInstr &MI, const MachineInstr &MI2, BuildFnTy &MatchInfo) const |
| Combine extract vector element with a build vector on the vector register. | |
| bool | matchExtractVectorElementWithBuildVectorTrunc (const MachineOperand &MO, BuildFnTy &MatchInfo) const |
| Combine extract vector element with a build vector trunc on the vector register. | |
| bool | matchExtractVectorElementWithShuffleVector (const MachineInstr &MI, const MachineInstr &MI2, BuildFnTy &MatchInfo) const |
| Combine extract vector element with a shuffle vector on the vector register. | |
| bool | matchExtractVectorElementWithDifferentIndices (const MachineOperand &MO, BuildFnTy &MatchInfo) const |
| Combine extract vector element with a insert vector element on the vector register and different indices. | |
| bool | matchShuffleUndefRHS (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Remove references to rhs if it is undef. | |
| bool | matchShuffleDisjointMask (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Turn shuffle a, b, mask -> shuffle undef, b, mask iff mask does not reference a. | |
| void | applyBuildFnMO (const MachineOperand &MO, BuildFnTy &MatchInfo) const |
| Use a function which takes in a MachineIRBuilder to perform a combine. | |
| bool | matchFPowIExpansion (MachineInstr &MI, int64_t Exponent) const |
| Match FPOWI if it's safe to extend it into a series of multiplications. | |
| void | applyExpandFPowI (MachineInstr &MI, int64_t Exponent) const |
| Expands FPOWI into a series of multiplications and a division if the exponent is negative. | |
| bool | matchInsertVectorElementOOB (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| Combine insert vector element OOB. | |
| bool | matchFreezeOfSingleMaybePoisonOperand (MachineInstr &MI, BuildFnTy &MatchInfo) const |
| bool | matchAddOfVScale (const MachineOperand &MO, BuildFnTy &MatchInfo) const |
| bool | matchMulOfVScale (const MachineOperand &MO, BuildFnTy &MatchInfo) const |
| bool | matchSubOfVScale (const MachineOperand &MO, BuildFnTy &MatchInfo) const |
| bool | matchShlOfVScale (const MachineOperand &MO, BuildFnTy &MatchInfo) const |
| bool | matchTruncateOfExt (const MachineInstr &Root, const MachineInstr &ExtMI, BuildFnTy &MatchInfo) const |
| Transform trunc ([asz]ext x) to x or ([asz]ext x) or (trunc x). | |
| bool | matchCastOfSelect (const MachineInstr &Cast, const MachineInstr &SelectMI, BuildFnTy &MatchInfo) const |
| bool | matchFoldAPlusC1MinusC2 (const MachineInstr &MI, BuildFnTy &MatchInfo) const |
| bool | matchFoldC2MinusAPlusC1 (const MachineInstr &MI, BuildFnTy &MatchInfo) const |
| bool | matchFoldAMinusC1MinusC2 (const MachineInstr &MI, BuildFnTy &MatchInfo) const |
| bool | matchFoldC1Minus2MinusC2 (const MachineInstr &MI, BuildFnTy &MatchInfo) const |
| bool | matchFoldAMinusC1PlusC2 (const MachineInstr &MI, BuildFnTy &MatchInfo) const |
| bool | matchExtOfExt (const MachineInstr &FirstMI, const MachineInstr &SecondMI, BuildFnTy &MatchInfo) const |
| bool | matchCastOfBuildVector (const MachineInstr &CastMI, const MachineInstr &BVMI, BuildFnTy &MatchInfo) const |
| bool | matchCanonicalizeICmp (const MachineInstr &MI, BuildFnTy &MatchInfo) const |
| bool | matchCanonicalizeFCmp (const MachineInstr &MI, BuildFnTy &MatchInfo) const |
| bool | matchUnmergeValuesAnyExtBuildVector (const MachineInstr &MI, BuildFnTy &MatchInfo) const |
| bool | matchMergeXAndUndef (const MachineInstr &MI, BuildFnTy &MatchInfo) const |
| bool | matchMergeXAndZero (const MachineInstr &MI, BuildFnTy &MatchInfo) const |
| bool | matchSuboCarryOut (const MachineInstr &MI, BuildFnTy &MatchInfo) const |
| bool | matchRedundantSextInReg (MachineInstr &Root, MachineInstr &Other, BuildFnTy &MatchInfo) const |
| bool | matchCtls (MachineInstr &CtlzMI, BuildFnTy &MatchInfo) const |
Protected Attributes | |
| MachineIRBuilder & | Builder |
| MachineRegisterInfo & | MRI |
| GISelChangeObserver & | Observer |
| GISelValueTracking * | VT |
| MachineDominatorTree * | MDT |
| bool | IsPreLegalize |
| const LegalizerInfo * | LI |
| const RegisterBankInfo * | RBI |
| const TargetRegisterInfo * | TRI |
Detailed Description
Definition at line 114 of file CombinerHelper.h.
Constructor & Destructor Documentation
◆ CombinerHelper()
| CombinerHelper::CombinerHelper | ( | GISelChangeObserver & | Observer, |
| MachineIRBuilder & | B, | ||
| bool | IsPreLegalize, | ||
| GISelValueTracking * | VT = nullptr, | ||
| MachineDominatorTree * | MDT = nullptr, | ||
| const LegalizerInfo * | LI = nullptr ) |
Member Function Documentation
◆ applyAshShlToSextInreg()
| void CombinerHelper::applyAshShlToSextInreg | ( | MachineInstr & | MI, |
| std::tuple< Register, int64_t > & | MatchInfo ) const |
◆ applyBuildFn()
| void CombinerHelper::applyBuildFn | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Use a function which takes in a MachineIRBuilder to perform a combine.
By default, it erases the instruction MI from the function.
Definition at line 4513 of file CombinerHelper.cpp.
References applyBuildFnNoErase(), and MI.
◆ applyBuildFnMO()
| void CombinerHelper::applyBuildFnMO | ( | const MachineOperand & | MO, |
| BuildFnTy & | MatchInfo ) const |
Use a function which takes in a MachineIRBuilder to perform a combine.
By default, it erases the instruction def'd on MO from the function.
Definition at line 8105 of file CombinerHelper.cpp.
References Builder, llvm::MachineInstr::eraseFromParent(), llvm::getDefIgnoringCopies(), llvm::MachineOperand::getReg(), and MRI.
◆ applyBuildFnNoErase()
| void CombinerHelper::applyBuildFnNoErase | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Use a function which takes in a MachineIRBuilder to perform a combine.
This variant does not erase MI after calling the build function.
Definition at line 4520 of file CombinerHelper.cpp.
Referenced by applyBuildFn().
◆ applyBuildInstructionSteps()
| void CombinerHelper::applyBuildInstructionSteps | ( | MachineInstr & | MI, |
| InstructionStepsMatchInfo & | MatchInfo ) const |
Replace MI with a series of instructions described in MatchInfo.
Definition at line 3296 of file CombinerHelper.cpp.
References assert(), Builder, llvm::InstructionStepsMatchInfo::InstrsToBuild, and MI.
◆ applyCombineAddP2IToPtrAdd()
| void CombinerHelper::applyCombineAddP2IToPtrAdd | ( | MachineInstr & | MI, |
| std::pair< Register, bool > & | PtrRegAndCommute ) const |
Definition at line 2617 of file CombinerHelper.cpp.
References Builder, MI, MRI, and std::swap().
◆ applyCombineBuildUnmerge()
| void CombinerHelper::applyCombineBuildUnmerge | ( | MachineInstr & | MI, |
| MachineRegisterInfo & | MRI, | ||
| MachineIRBuilder & | B, | ||
| Register & | UnmergeSrc ) const |
◆ applyCombineConcatVectors()
| void CombinerHelper::applyCombineConcatVectors | ( | MachineInstr & | MI, |
| SmallVector< Register > & | Ops ) const |
Replace MI with a flattened build_vector with Ops or an implicit_def if Ops is empty.
Definition at line 373 of file CombinerHelper.cpp.
References AbstractManglingParser< Derived, Alloc >::Ops, Builder, MI, MRI, and replaceRegWith().
◆ applyCombineConstantFoldFpUnary()
| void CombinerHelper::applyCombineConstantFoldFpUnary | ( | MachineInstr & | MI, |
| const ConstantFP * | Cst ) const |
Transform fp_instr(cst) to constant result of the fp operation.
Definition at line 1735 of file CombinerHelper.cpp.
References Builder, constantFoldFpUnary(), llvm::ConstantFP::getValue(), MI, and MRI.
◆ applyCombineConstPtrAddToI2P()
| void CombinerHelper::applyCombineConstPtrAddToI2P | ( | MachineInstr & | MI, |
| APInt & | NewCst ) const |
Definition at line 2656 of file CombinerHelper.cpp.
References Builder, llvm::cast(), and MI.
◆ applyCombineCopy()
| void CombinerHelper::applyCombineCopy | ( | MachineInstr & | MI | ) | const |
Definition at line 238 of file CombinerHelper.cpp.
References MI, MRI, and replaceRegWith().
Referenced by tryCombineCopy().
◆ applyCombineDivRem()
| void CombinerHelper::applyCombineDivRem | ( | MachineInstr & | MI, |
| MachineInstr *& | OtherMI ) const |
Definition at line 1561 of file CombinerHelper.cpp.
References assert(), Builder, dominates(), llvm::MachineInstr::eraseFromParent(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), and MI.
◆ applyCombineExtendingLoads()
| void CombinerHelper::applyCombineExtendingLoads | ( | MachineInstr & | MI, |
| PreferredTuple & | MatchInfo ) const |
rewrites to:
rewrites to:
Definition at line 799 of file CombinerHelper.cpp.
References Builder, llvm::MachineInstr::eraseFromParent(), llvm::PreferredTuple::ExtendOpcode, getExtLoadOpcForExtend(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getParent(), llvm::MachineOperand::getReg(), llvm::LLT::getSizeInBits(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::lookup(), llvm::make_pointer_range(), llvm::PreferredTuple::MI, MI, MRI, Observer, replaceRegOpWith(), replaceRegWith(), llvm::MachineOperand::setReg(), llvm::PreferredTuple::Ty, UseMI, and Uses.
Referenced by tryCombineExtendingLoads().
◆ applyCombineI2PToP2I()
| void CombinerHelper::applyCombineI2PToP2I | ( | MachineInstr & | MI, |
| Register & | Reg ) const |
Definition at line 2576 of file CombinerHelper.cpp.
◆ applyCombineIndexedLoadStore()
| void CombinerHelper::applyCombineIndexedLoadStore | ( | MachineInstr & | MI, |
| IndexedLoadStoreMatchInfo & | MatchInfo ) const |
Definition at line 1463 of file CombinerHelper.cpp.
References llvm::IndexedLoadStoreMatchInfo::Addr, llvm::IndexedLoadStoreMatchInfo::Base, Builder, llvm::dbgs(), llvm::MachineInstr::eraseFromParent(), getIndexedOpc(), llvm::IndexedLoadStoreMatchInfo::IsPre, LLVM_DEBUG, MI, MRI, llvm::IndexedLoadStoreMatchInfo::Offset, and llvm::IndexedLoadStoreMatchInfo::RematOffset.
◆ applyCombineInsertVecElts()
| void CombinerHelper::applyCombineInsertVecElts | ( | MachineInstr & | MI, |
| SmallVectorImpl< Register > & | MatchInfo ) const |
Definition at line 3162 of file CombinerHelper.cpp.
References Builder, llvm::LLT::getScalarType(), MI, and MRI.
◆ applyCombineMulToShl()
| void CombinerHelper::applyCombineMulToShl | ( | MachineInstr & | MI, |
| unsigned & | ShiftVal ) const |
Definition at line 2145 of file CombinerHelper.cpp.
References assert(), llvm::MachineIRBuilder::buildConstant(), llvm::MCInstrInfo::get(), llvm::LLT::getScalarSizeInBits(), llvm::MachineIRBuilder::getTII(), MI, MRI, llvm::MachineInstr::NoSWrap, and Observer.
◆ applyCombineP2IToI2P()
| void CombinerHelper::applyCombineP2IToI2P | ( | MachineInstr & | MI, |
| Register & | Reg ) const |
Transform PtrToInt(IntToPtr(x)) to x.
Definition at line 2584 of file CombinerHelper.cpp.
◆ applyCombineShiftToUnmerge()
| void CombinerHelper::applyCombineShiftToUnmerge | ( | MachineInstr & | MI, |
| const unsigned & | ShiftVal ) const |
Definition at line 2483 of file CombinerHelper.cpp.
References assert(), Builder, llvm::Hi, llvm::Lo, MI, MRI, llvm::LLT::scalar(), and Size.
Referenced by tryCombineShiftToUnmerge().
◆ applyCombineShlOfExtend()
| void CombinerHelper::applyCombineShlOfExtend | ( | MachineInstr & | MI, |
| const RegisterImmPair & | MatchData ) const |
Definition at line 2227 of file CombinerHelper.cpp.
References Builder, llvm::RegisterImmPair::Imm, MI, MRI, and llvm::RegisterImmPair::Reg.
◆ applyCombineShuffleConcat()
| void CombinerHelper::applyCombineShuffleConcat | ( | MachineInstr & | MI, |
| SmallVector< Register > & | Ops ) const |
Replace MI with a flattened build_vector with Ops or an implicit_def if Ops is empty.
Definition at line 484 of file CombinerHelper.cpp.
References AbstractManglingParser< Derived, Alloc >::Ops, assert(), Builder, MI, and MRI.
◆ applyCombineShuffleToBuildVector()
| void CombinerHelper::applyCombineShuffleToBuildVector | ( | MachineInstr & | MI | ) | const |
Replace MI with a build_vector.
Definition at line 395 of file CombinerHelper.cpp.
References assert(), Builder, llvm::cast(), MI, MRI, llvm::SmallVectorTemplateBase< T, bool >::push_back(), and llvm::SmallVectorTemplateCommon< T, typename >::size().
◆ applyCombineShuffleVector()
| void CombinerHelper::applyCombineShuffleVector | ( | MachineInstr & | MI, |
| ArrayRef< Register > | Ops ) const |
Replace MI with a concat_vectors with Ops.
Definition at line 593 of file CombinerHelper.cpp.
References AbstractManglingParser< Derived, Alloc >::Ops, Builder, MI, MRI, and replaceRegWith().
Referenced by tryCombineShuffleVector().
◆ applyCombineTruncOfShift()
| void CombinerHelper::applyCombineTruncOfShift | ( | MachineInstr & | MI, |
| std::pair< MachineInstr *, LLT > & | MatchInfo ) const |
Definition at line 2773 of file CombinerHelper.cpp.
References Builder, eraseInst(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), MI, MRI, and replaceRegWith().
◆ applyCombineUnmergeConstant()
| void CombinerHelper::applyCombineUnmergeConstant | ( | MachineInstr & | MI, |
| SmallVectorImpl< APInt > & | Csts ) const |
Definition at line 2347 of file CombinerHelper.cpp.
References assert(), Builder, MI, and llvm::SmallVectorTemplateCommon< T, typename >::size().
◆ applyCombineUnmergeMergeToPlainValues()
| void CombinerHelper::applyCombineUnmergeMergeToPlainValues | ( | MachineInstr & | MI, |
| SmallVectorImpl< Register > & | Operands ) const |
Definition at line 2291 of file CombinerHelper.cpp.
References assert(), Builder, MI, MRI, replaceRegWith(), and llvm::SmallVectorTemplateCommon< T, typename >::size().
◆ applyCombineUnmergeWithDeadLanesToTrunc()
| void CombinerHelper::applyCombineUnmergeWithDeadLanesToTrunc | ( | MachineInstr & | MI | ) | const |
Definition at line 2392 of file CombinerHelper.cpp.
◆ applyCombineUnmergeZExtToZExt()
| void CombinerHelper::applyCombineUnmergeZExtToZExt | ( | MachineInstr & | MI | ) | const |
Definition at line 2426 of file CombinerHelper.cpp.
References assert(), Builder, llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::LLT::getSizeInBits(), MI, MRI, and replaceRegWith().
◆ applyCommuteBinOpOperands()
| void CombinerHelper::applyCommuteBinOpOperands | ( | MachineInstr & | MI | ) | const |
Definition at line 7212 of file CombinerHelper.cpp.
◆ applyExpandFPowI()
| void CombinerHelper::applyExpandFPowI | ( | MachineInstr & | MI, |
| int64_t | Exponent ) const |
Expands FPOWI into a series of multiplications and a division if the exponent is negative.
Definition at line 8118 of file CombinerHelper.cpp.
References llvm::sampleprof::Base, Builder, llvm::Exponent, MI, and MRI.
◆ applyExtendThroughPhis()
| void CombinerHelper::applyExtendThroughPhis | ( | MachineInstr & | MI, |
| MachineInstr *& | ExtMI ) const |
Definition at line 4361 of file CombinerHelper.cpp.
References Builder, llvm::cast(), llvm::drop_begin(), llvm::MachineInstr::eraseFromParent(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), I, llvm::SetVector< T, Vector, Set, N >::insert(), MBB, MI, MRI, and PHI.
◆ applyExtractAllEltsFromBuildVector()
| void CombinerHelper::applyExtractAllEltsFromBuildVector | ( | MachineInstr & | MI, |
| SmallVectorImpl< std::pair< Register, MachineInstr * > > & | MatchInfo ) const |
Definition at line 4501 of file CombinerHelper.cpp.
References assert(), MI, MRI, and replaceRegWith().
◆ applyExtractVecEltBuildVec()
| void CombinerHelper::applyExtractVecEltBuildVec | ( | MachineInstr & | MI, |
| Register & | Reg ) const |
Definition at line 4442 of file CombinerHelper.cpp.
References assert(), Builder, llvm::LLT::getSizeInBits(), MI, MRI, and replaceSingleDefInstWithReg().
◆ applyFoldBinOpIntoSelect()
| void CombinerHelper::applyFoldBinOpIntoSelect | ( | MachineInstr & | MI, |
| const unsigned & | SelectOpNo ) const |
◆ applyFsubToFneg()
| void CombinerHelper::applyFsubToFneg | ( | MachineInstr & | MI, |
| Register & | MatchInfo ) const |
Definition at line 6201 of file CombinerHelper.cpp.
References Builder, eraseInst(), MI, and MRI.
◆ applyFunnelShiftConstantModulo()
| void CombinerHelper::applyFunnelShiftConstantModulo | ( | MachineInstr & | MI | ) | const |
Replaces the shift amount in MI with ShiftAmt % BW.
- Parameters
-
MI
Definition at line 3011 of file CombinerHelper.cpp.
References assert(), Builder, llvm::getIConstantVRegValWithLookThrough(), llvm::LLT::getScalarSizeInBits(), llvm::LLT::getSizeInBits(), llvm::APInt::getZExtValue(), MI, MRI, and llvm::APInt::urem().
◆ applyFunnelShiftToRotate()
| void CombinerHelper::applyFunnelShiftToRotate | ( | MachineInstr & | MI | ) | const |
◆ applyLshrOfTruncOfLshr()
| void CombinerHelper::applyLshrOfTruncOfLshr | ( | MachineInstr & | MI, |
| LshrOfTruncOfLshr & | MatchInfo ) const |
Definition at line 2112 of file CombinerHelper.cpp.
References assert(), Builder, llvm::APInt::getLowBitsSet(), llvm::LLT::getScalarSizeInBits(), llvm::APInt::getZExtValue(), llvm::LshrOfTruncOfLshr::InnerShiftTy, llvm::LshrOfTruncOfLshr::Mask, llvm::LshrOfTruncOfLshr::MaskVal, MI, llvm::LshrOfTruncOfLshr::ShiftAmt, llvm::LshrOfTruncOfLshr::ShiftAmtTy, and llvm::LshrOfTruncOfLshr::Src.
◆ applyNotCmp()
| void CombinerHelper::applyNotCmp | ( | MachineInstr & | MI, |
| SmallVectorImpl< Register > & | RegsToNegate ) const |
Definition at line 3755 of file CombinerHelper.cpp.
References Builder, llvm::CmpInst::getInversePredicate(), llvm::MachineOperand::getPredicate(), llvm_unreachable, MI, MRI, Observer, replaceRegWith(), and llvm::MachineOperand::setPredicate().
◆ applyOptBrCondByInvertingCond()
| void CombinerHelper::applyOptBrCondByInvertingCond | ( | MachineInstr & | MI, |
| MachineInstr *& | BrCond ) const |
Definition at line 1627 of file CombinerHelper.cpp.
References Builder, llvm::getICmpTrueVal(), llvm::MachineOperand::getMBB(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), getTargetLowering(), MI, MRI, Observer, llvm::MachineOperand::setMBB(), llvm::MachineOperand::setReg(), and llvm::Xor.
◆ applyPtrAddImmedChain()
| void CombinerHelper::applyPtrAddImmedChain | ( | MachineInstr & | MI, |
| PtrAddChain & | MatchInfo ) const |
Definition at line 1824 of file CombinerHelper.cpp.
References assert(), llvm::PtrAddChain::Bank, llvm::PtrAddChain::Base, llvm::MachineIRBuilder::buildConstant(), llvm::PtrAddChain::Flags, llvm::PtrAddChain::Imm, MI, MRI, Observer, and setRegBank().
◆ applyPtrAddZero()
| void CombinerHelper::applyPtrAddZero | ( | MachineInstr & | MI | ) | const |
Definition at line 3850 of file CombinerHelper.cpp.
References Builder, llvm::cast(), and MI.
◆ applyRepeatedFPDivisor()
| void CombinerHelper::applyRepeatedFPDivisor | ( | SmallVector< MachineInstr * > & | MatchInfo | ) | const |
Definition at line 6847 of file CombinerHelper.cpp.
References Builder, getParent(), getReg(), MI, and MRI.
◆ applyRotateOutOfRange()
| void CombinerHelper::applyRotateOutOfRange | ( | MachineInstr & | MI | ) | const |
◆ applySDivByPow2()
| void CombinerHelper::applySDivByPow2 | ( | MachineInstr & | MI | ) | const |
Definition at line 5931 of file CombinerHelper.cpp.
References llvm::Add, assert(), llvm::BitWidth, Builder, llvm::cast(), llvm::TargetLoweringBase::getPreferredShiftAmountTy(), getTargetLowering(), llvm::CmpInst::ICMP_EQ, llvm::CmpInst::ICMP_SLT, llvm::LLT::isVector(), MI, MRI, llvm::LLT::scalar(), and llvm::LLT::vector().
◆ applySDivOrSRemByConst()
| void CombinerHelper::applySDivOrSRemByConst | ( | MachineInstr & | MI | ) | const |
Definition at line 5766 of file CombinerHelper.cpp.
References buildSDivOrSRemUsingMul(), MI, and replaceSingleDefInstWithReg().
◆ applySextInRegOfLoad()
| void CombinerHelper::applySextInRegOfLoad | ( | MachineInstr & | MI, |
| std::tuple< Register, unsigned > & | MatchInfo ) const |
Definition at line 1099 of file CombinerHelper.cpp.
References assert(), Builder, llvm::cast(), llvm::MachineInstr::eraseFromParent(), llvm::GMemOperation::getMMO(), llvm::GLoadStore::getPointerReg(), MI, and MRI.
◆ applySextTruncSextLoad()
| void CombinerHelper::applySextTruncSextLoad | ( | MachineInstr & | MI | ) | const |
Definition at line 1041 of file CombinerHelper.cpp.
◆ applyShiftImmedChain()
| void CombinerHelper::applyShiftImmedChain | ( | MachineInstr & | MI, |
| RegisterImmPair & | MatchInfo ) const |
Definition at line 1883 of file CombinerHelper.cpp.
References assert(), Builder, llvm::RegisterImmPair::Imm, MI, MRI, Observer, and llvm::RegisterImmPair::Reg.
◆ applyShiftOfShiftedLogic()
| void CombinerHelper::applyShiftOfShiftedLogic | ( | MachineInstr & | MI, |
| ShiftOfShiftedLogic & | MatchInfo ) const |
Definition at line 1996 of file CombinerHelper.cpp.
References assert(), Builder, llvm::MachineInstr::eraseFromParent(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), getReg(), llvm::MachineOperand::getReg(), llvm::ShiftOfShiftedLogic::Logic, llvm::ShiftOfShiftedLogic::LogicNonShiftReg, MI, MRI, llvm::ShiftOfShiftedLogic::Shift2, and llvm::ShiftOfShiftedLogic::ValSum.
◆ applySimplifyAddToSub()
| void CombinerHelper::applySimplifyAddToSub | ( | MachineInstr & | MI, |
| std::tuple< Register, Register > & | MatchInfo ) const |
Definition at line 3180 of file CombinerHelper.cpp.
◆ applySimplifyURemByPow2()
| void CombinerHelper::applySimplifyURemByPow2 | ( | MachineInstr & | MI | ) | const |
◆ applyTruncSSatS()
| void CombinerHelper::applyTruncSSatS | ( | MachineInstr & | MI, |
| Register & | MatchInfo ) const |
Definition at line 6065 of file CombinerHelper.cpp.
◆ applyTruncSSatU()
| void CombinerHelper::applyTruncSSatU | ( | MachineInstr & | MI, |
| Register & | MatchInfo ) const |
Definition at line 6097 of file CombinerHelper.cpp.
◆ applyUDivByPow2()
| void CombinerHelper::applyUDivByPow2 | ( | MachineInstr & | MI | ) | const |
Given an G_UDIV MI expressing an unsigned divided by a pow2 constant, return expressions that implements it by shifting.
Definition at line 5990 of file CombinerHelper.cpp.
References assert(), Builder, llvm::cast(), llvm::TargetLoweringBase::getPreferredShiftAmountTy(), getTargetLowering(), MI, and MRI.
◆ applyUDivOrURemByConst()
| void CombinerHelper::applyUDivOrURemByConst | ( | MachineInstr & | MI | ) | const |
Definition at line 5713 of file CombinerHelper.cpp.
References buildUDivOrURemUsingMul(), MI, and replaceSingleDefInstWithReg().
◆ applyUMulHToLShr()
| void CombinerHelper::applyUMulHToLShr | ( | MachineInstr & | MI | ) | const |
Definition at line 6024 of file CombinerHelper.cpp.
References Builder, buildLogBase2(), llvm::TargetLoweringBase::getPreferredShiftAmountTy(), llvm::LLT::getScalarSizeInBits(), getTargetLowering(), MI, and MRI.
◆ applyUseVectorTruncate()
| void CombinerHelper::applyUseVectorTruncate | ( | MachineInstr & | MI, |
| Register & | MatchInfo ) const |
Definition at line 3651 of file CombinerHelper.cpp.
References Builder, llvm::BuildMI(), llvm::cast(), llvm::LLT::changeElementType(), llvm::LLT::getNumElements(), llvm::LLT::getScalarType(), I, MI, MRI, and llvm::SmallVectorTemplateBase< T, bool >::push_back().
◆ applyXorOfAndWithSameReg()
| void CombinerHelper::applyXorOfAndWithSameReg | ( | MachineInstr & | MI, |
| std::pair< Register, Register > & | MatchInfo ) const |
◆ buildSDivOrSRemUsingMul()
| MachineInstr * CombinerHelper::buildSDivOrSRemUsingMul | ( | MachineInstr & | MI | ) | const |
Given an G_SDIV MI or G_SREM MI expressing a signed divide by constant, return an expression that implements it by multiplying by a magic number.
Ref: "Hacker's Delight" or "The PowerPC Compiler Writer's Guide".
Definition at line 5771 of file CombinerHelper.cpp.
References llvm::APInt::ashrInPlace(), assert(), Builder, llvm::CallingConv::C, llvm::cast(), llvm::APInt::countr_zero(), llvm::SmallVectorTemplateCommon< T, typename >::empty(), llvm::SignedDivisionByConstantInfo::get(), llvm::getDefIgnoringCopies(), llvm::getIConstantSplatVal(), llvm::getOpcodeDef(), llvm::TargetLoweringBase::getPreferredShiftAmountTy(), llvm::LLT::getScalarSizeInBits(), llvm::LLT::getScalarType(), llvm::APInt::getSExtValue(), getTargetLowering(), llvm::APInt::isAllOnes(), llvm::MachineInstr::IsExact, llvm::APInt::isNegative(), llvm::APInt::isOne(), llvm::APInt::isStrictlyPositive(), llvm::SignedDivisionByConstantInfo::Magic, llvm::matchUnaryPredicate(), MI, MRI, llvm::APInt::multiplicativeInverse(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::SignedDivisionByConstantInfo::ShiftAmount, and T.
Referenced by applySDivOrSRemByConst().
◆ buildUDivOrURemUsingMul()
| MachineInstr * CombinerHelper::buildUDivOrURemUsingMul | ( | MachineInstr & | MI | ) | const |
Given an G_UDIV MI or G_UREM MI expressing a divide by constant, return an expression that implements it by multiplying by a magic number.
Ref: "Hacker's Delight" or "The PowerPC Compiler Writer's Guide".
Definition at line 5496 of file CombinerHelper.cpp.
References assert(), Builder, llvm::CallingConv::C, llvm::cast(), llvm::APInt::countl_zero(), llvm::APInt::countr_zero(), llvm::SmallVectorTemplateCommon< T, typename >::empty(), llvm::UnsignedDivisionByConstantInfo::get(), llvm::APInt::getBitWidth(), llvm::getDefIgnoringCopies(), llvm::getIConstantSplatVal(), llvm::APInt::getOneBitSet(), llvm::getOpcodeDef(), llvm::TargetLoweringBase::getPreferredShiftAmountTy(), llvm::LLT::getScalarSizeInBits(), llvm::LLT::getScalarType(), getTargetLowering(), llvm::APInt::getZero(), llvm::CmpInst::ICMP_EQ, llvm::UnsignedDivisionByConstantInfo::IsAdd, llvm::MachineInstr::IsExact, llvm::APInt::isOne(), llvm_unreachable, llvm::APInt::lshrInPlace(), llvm::UnsignedDivisionByConstantInfo::Magic, llvm::matchUnaryPredicate(), MI, MRI, llvm::APInt::multiplicativeInverse(), llvm::UnsignedDivisionByConstantInfo::PostShift, llvm::UnsignedDivisionByConstantInfo::PreShift, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::LLT::scalar(), and VT.
Referenced by applyUDivOrURemByConst().
◆ canCombineFMadOrFMA()
| bool CombinerHelper::canCombineFMadOrFMA | ( | MachineInstr & | MI, |
| bool & | AllowFusionGlobally, | ||
| bool & | HasFMAD, | ||
| bool & | Aggressive, | ||
| bool | CanReassociate = false ) const |
Definition at line 6225 of file CombinerHelper.cpp.
References llvm::Aggressive, llvm::FPOpFusion::Fast, llvm::MachineInstr::FmContract, llvm::MachineInstr::FmReassoc, isLegalOrBeforeLegalizer(), isPreLegalize(), MI, MRI, and Options.
Referenced by matchCombineFAddFMAFMulToFMadOrFMA(), matchCombineFAddFMulToFMadOrFMA(), matchCombineFAddFpExtFMulToFMadOrFMA(), matchCombineFAddFpExtFMulToFMadOrFMAAggressive(), matchCombineFSubFMulToFMadOrFMA(), matchCombineFSubFNegFMulToFMadOrFMA(), matchCombineFSubFpExtFMulToFMadOrFMA(), and matchCombineFSubFpExtFNegFMulToFMadOrFMA().
◆ dominates()
| bool CombinerHelper::dominates | ( | const MachineInstr & | DefMI, |
| const MachineInstr & | UseMI ) const |
Returns true if DefMI dominates UseMI.
By definition an instruction dominates itself.
If we haven't been provided with a MachineDominatorTree during construction, this function returns a conservative result that tracks just a single basic block.
Definition at line 1002 of file CombinerHelper.cpp.
References assert(), DefMI, isPredecessor(), MDT, and UseMI.
Referenced by applyCombineDivRem(), and matchRepeatedFPDivisor().
◆ eraseInst()
| void CombinerHelper::eraseInst | ( | MachineInstr & | MI | ) | const |
Erase MI.
Definition at line 2858 of file CombinerHelper.cpp.
References MI.
Referenced by applyCombineTruncOfShift(), and applyFsubToFneg().
◆ getBuilder()
|
inline |
Definition at line 134 of file CombinerHelper.h.
References Builder.
◆ getContext()
| LLVMContext & CombinerHelper::getContext | ( | ) | const |
Definition at line 82 of file CombinerHelper.cpp.
References Builder.
◆ getDataLayout()
| const DataLayout & CombinerHelper::getDataLayout | ( | ) | const |
Definition at line 78 of file CombinerHelper.cpp.
References llvm::MachineFunction::getDataLayout(), and getMachineFunction().
◆ getMachineFunction()
| const MachineFunction & CombinerHelper::getMachineFunction | ( | ) | const |
Definition at line 74 of file CombinerHelper.cpp.
References Builder.
Referenced by getDataLayout().
◆ getRegBank()
| const RegisterBank * CombinerHelper::getRegBank | ( | Register | Reg | ) | const |
Get the register bank of Reg.
If Reg has not been assigned a register, a register class, or a register bank, then this returns nullptr.
- Precondition
- Reg.isValid()
Definition at line 214 of file CombinerHelper.cpp.
Referenced by matchPtrAddImmedChain().
◆ getTargetLowering()
| const TargetLowering & CombinerHelper::getTargetLowering | ( | ) | const |
Definition at line 70 of file CombinerHelper.cpp.
References Builder.
Referenced by applyOptBrCondByInvertingCond(), applySDivByPow2(), applyUDivByPow2(), applyUMulHToLShr(), buildSDivOrSRemUsingMul(), buildUDivOrURemUsingMul(), matchBitfieldExtractFromAnd(), matchBitfieldExtractFromSExtInReg(), matchBitfieldExtractFromShr(), matchBitfieldExtractFromShrAnd(), matchCombineExtractedVectorLoad(), matchCombineShlOfExtend(), matchCombineTruncOfShift(), matchCommuteShift(), matchExtractVecEltBuildVec(), matchExtractVectorElementWithBuildVector(), matchExtractVectorElementWithBuildVectorTrunc(), matchFPowIExpansion(), matchHoistLogicOpWithSameOpcodeHands(), matchICmpToLHSKnownBits(), matchICmpToTrueFalseKnownBits(), matchLoadOrCombine(), matchNarrowBinopFeedingAnd(), matchNonNegZext(), matchRepeatedFPDivisor(), matchSDivOrSRemByConst(), matchSuboCarryOut(), matchUDivOrURemByConst(), matchUMulHToLShr(), and tryReassocBinOp().
◆ getValueTracking()
|
inline |
Definition at line 132 of file CombinerHelper.h.
References VT.
◆ isConstantLegalOrBeforeLegalizer()
- Returns
- true if the combine is running prior to legalization, or if
Tyis a legal integer constant type on the target.
Definition at line 171 of file CombinerHelper.cpp.
References llvm::LLT::getElementType(), isLegal(), isLegalOrBeforeLegalizer(), and isPreLegalize().
Referenced by matchAddOverflow(), matchCastOfInteger(), matchCombineSubToAdd(), matchExtractVectorElementWithShuffleVector(), matchMulOBy0(), and matchSuboCarryOut().
◆ isLegal()
| bool CombinerHelper::isLegal | ( | const LegalityQuery & | Query | ) | const |
- Returns
- true if
Queryis legal on the target.
Definition at line 156 of file CombinerHelper.cpp.
References assert(), llvm::LegalizeActions::Legal, and LI.
Referenced by isConstantLegalOrBeforeLegalizer(), isLegalOrBeforeLegalizer(), isLegalOrHasWidenScalar(), matchCombineBuildUnmerge(), matchSDivOrSRemByConst(), matchSimplifyNegMinMax(), matchTruncSSatS(), matchTruncSSatU(), matchTruncUSatU(), and matchUseVectorTruncate().
◆ isLegalOrBeforeLegalizer()
| bool CombinerHelper::isLegalOrBeforeLegalizer | ( | const LegalityQuery & | Query | ) | const |
- Returns
- true if the combine is running prior to legalization, or if
Queryis legal on the target.
Definition at line 161 of file CombinerHelper.cpp.
References isLegal(), and isPreLegalize().
Referenced by canCombineFMadOrFMA(), isConstantLegalOrBeforeLegalizer(), matchAddOverflow(), matchAshrShlToSextInreg(), matchCastOfBuildVector(), matchCastOfSelect(), matchCombineConcatVectors(), matchCombineDivRem(), matchCombineExtractedVectorLoad(), matchCombineLoadWithAndMask(), matchCombineShlOfExtend(), matchCombineShuffleConcat(), matchCombineSubToAdd(), matchCombineTruncOfShift(), matchExtOfExt(), matchExtractVectorElement(), matchExtractVectorElementWithBuildVectorTrunc(), matchExtractVectorElementWithShuffleVector(), matchFunnelShiftToRotate(), matchHoistLogicOpWithSameOpcodeHands(), matchICmpToLHSKnownBits(), matchInsertVectorElementOOB(), matchLoadOrCombine(), matchMergeXAndUndef(), matchMergeXAndZero(), matchNarrowBinop(), matchNarrowBinopFeedingAnd(), matchNonNegZext(), matchOrShiftToFunnelShift(), matchRedundantNegOperands(), matchSDivOrSRemByConst(), matchSelectIMinMax(), matchSextInRegOfLoad(), matchSextOfTrunc(), matchShlOfVScale(), matchShuffleDisjointMask(), matchSuboCarryOut(), matchSubOfVScale(), matchTruncateOfExt(), matchTruncUSatUToFPTOUISat(), matchUDivOrURemByConst(), matchUMulHToLShr(), matchUnmergeValuesAnyExtBuildVector(), and matchZextOfTrunc().
◆ isLegalOrHasWidenScalar()
| bool CombinerHelper::isLegalOrHasWidenScalar | ( | const LegalityQuery & | Query | ) | const |
- Returns
- true if
Queryis legal on the target, or ifQuerywill perform WidenScalar action on the target.
Definition at line 166 of file CombinerHelper.cpp.
References isLegal(), LI, and llvm::LegalizeActions::WidenScalar.
Referenced by matchSDivOrSRemByConst().
◆ isPredecessor()
| bool CombinerHelper::isPredecessor | ( | const MachineInstr & | DefMI, |
| const MachineInstr & | UseMI ) const |
Returns true if DefMI precedes UseMI or they are the same instruction.
Both must be in the same basic block.
Definition at line 986 of file CombinerHelper.cpp.
References assert(), DefMI, llvm::find_if(), llvm_unreachable, MBB, MI, and UseMI.
Referenced by dominates().
◆ isPreLegalize()
| bool CombinerHelper::isPreLegalize | ( | ) | const |
- Returns
- true if the combiner is running pre-legalization.
Definition at line 154 of file CombinerHelper.cpp.
References IsPreLegalize.
Referenced by canCombineFMadOrFMA(), isConstantLegalOrBeforeLegalizer(), isLegalOrBeforeLegalizer(), matchCombineExtendingLoads(), and matchCommuteShift().
◆ matchAddEToAddO()
| bool CombinerHelper::matchAddEToAddO | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Match: (G_*ADDE x, y, 0) -> (G_*ADDO x, y) (G_*SUBE x, y, 0) -> (G_*SUBO x, y)
Definition at line 5418 of file CombinerHelper.cpp.
References assert(), B(), llvm::MIPatternMatch::m_SpecificICstOrSplat(), MI, llvm::MIPatternMatch::mi_match(), MRI, and Observer.
◆ matchAddOfVScale()
| bool CombinerHelper::matchAddOfVScale | ( | const MachineOperand & | MO, |
| BuildFnTy & | MatchInfo ) const |
Definition at line 365 of file CombinerHelperVectorOps.cpp.
References llvm::Add, B(), llvm::cast(), llvm::GenericMachineInstr::getReg(), llvm::MachineOperand::getReg(), llvm::GVScale::getSrc(), and MRI.
◆ matchAddOverflow()
| bool CombinerHelper::matchAddOverflow | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Combine addos.
Definition at line 7937 of file CombinerHelper.cpp.
References llvm::Add, llvm::ConstantRange::AlwaysOverflowsHigh, llvm::ConstantRange::AlwaysOverflowsLow, B(), llvm::cast(), llvm::ConstantRange::fromKnownBits(), llvm::MachineInstr::getFlag(), llvm::GBinOp::getLHSReg(), llvm::getOpcodeDef(), llvm::GBinOp::getRHSReg(), isConstantLegalOrBeforeLegalizer(), isLegalOrBeforeLegalizer(), llvm::ConstantRange::MayOverflow, MI, MRI, llvm::ConstantRange::NeverOverflows, llvm::MachineInstr::NoSWrap, llvm::MachineInstr::NoUWrap, llvm::ConstantRange::signedAddMayOverflow(), llvm::ConstantRange::unsignedAddMayOverflow(), and VT.
◆ matchAddSubSameReg()
| bool CombinerHelper::matchAddSubSameReg | ( | MachineInstr & | MI, |
| Register & | Src ) const |
Transform G_ADD(x, G_SUB(y, x)) to y.
Transform G_ADD(G_SUB(y, x), x) to y.
Definition at line 6866 of file CombinerHelper.cpp.
References assert(), llvm::MIPatternMatch::m_GSub(), llvm::MIPatternMatch::m_Reg(), MI, llvm::MIPatternMatch::mi_match(), and MRI.
◆ matchAllExplicitUsesAreUndef()
| bool CombinerHelper::matchAllExplicitUsesAreUndef | ( | MachineInstr & | MI | ) | const |
Return true if all register explicit use operands on MI are defined by a G_IMPLICIT_DEF.
Definition at line 2805 of file CombinerHelper.cpp.
References llvm::all_of(), and MI.
◆ matchAnd()
| bool CombinerHelper::matchAnd | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
◆ matchAndOrDisjointMask()
| bool CombinerHelper::matchAndOrDisjointMask | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
- Returns
- true if (and (or x, c1), c2) can be replaced with (and x, c2)
Definition at line 4720 of file CombinerHelper.cpp.
References assert(), B(), llvm::MIPatternMatch::m_all_of(), llvm::MIPatternMatch::m_GAnd(), llvm::MIPatternMatch::m_GOr(), llvm::MIPatternMatch::m_ICst(), llvm::MIPatternMatch::m_Reg(), MI, llvm::MIPatternMatch::mi_match(), MRI, and Observer.
◆ matchAnyExplicitUseIsUndef()
| bool CombinerHelper::matchAnyExplicitUseIsUndef | ( | MachineInstr & | MI | ) | const |
Return true if any explicit use operand on MI is defined by a G_IMPLICIT_DEF.
Definition at line 2798 of file CombinerHelper.cpp.
References llvm::any_of(), and MI.
◆ matchAshrShlToSextInreg()
| bool CombinerHelper::matchAshrShlToSextInreg | ( | MachineInstr & | MI, |
| std::tuple< Register, int64_t > & | MatchInfo ) const |
Match ashr (shl x, C), C -> sext_inreg (C)
Definition at line 3310 of file CombinerHelper.cpp.
References assert(), isLegalOrBeforeLegalizer(), llvm::MIPatternMatch::m_GAShr(), llvm::MIPatternMatch::m_GShl(), llvm::MIPatternMatch::m_ICstOrSplat(), llvm::MIPatternMatch::m_Reg(), MI, llvm::MIPatternMatch::mi_match(), and MRI.
◆ matchBinOpSameVal()
| bool CombinerHelper::matchBinOpSameVal | ( | MachineInstr & | MI | ) | const |
Optimize (x op x) -> x.
Definition at line 3043 of file CombinerHelper.cpp.
References llvm::canReplaceReg(), matchEqualDefs(), MI, and MRI.
◆ matchBitfieldExtractFromAnd()
| bool CombinerHelper::matchBitfieldExtractFromAnd | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Match: and (lshr x, cst), mask -> ubfx x, cst, width.
Form a G_UBFX from "(a srl b) & mask", where b and mask are constants.
Definition at line 4786 of file CombinerHelper.cpp.
References llvm::cast(), llvm::TargetLoweringBase::getPreferredShiftAmountTy(), getTargetLowering(), LI, MI, and MRI.
◆ matchBitfieldExtractFromSExtInReg()
| bool CombinerHelper::matchBitfieldExtractFromSExtInReg | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Form a G_SBFX from a G_SEXT_INREG fed by a right shift.
Definition at line 4756 of file CombinerHelper.cpp.
References assert(), llvm::TargetLoweringBase::getPreferredShiftAmountTy(), getTargetLowering(), LI, MI, and MRI.
◆ matchBitfieldExtractFromShr()
| bool CombinerHelper::matchBitfieldExtractFromShr | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Match: shr (shl x, n), k -> sbfx/ubfx x, pos, width.
Definition at line 4823 of file CombinerHelper.cpp.
References assert(), llvm::TargetLoweringBase::getPreferredShiftAmountTy(), getTargetLowering(), LI, MI, and MRI.
◆ matchBitfieldExtractFromShrAnd()
| bool CombinerHelper::matchBitfieldExtractFromShrAnd | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Match: shr (and x, n), k -> ubfx x, pos, width.
Definition at line 4873 of file CombinerHelper.cpp.
References assert(), llvm::TargetLoweringBase::getPreferredShiftAmountTy(), getTargetLowering(), LI, MI, and MRI.
◆ matchBuildVectorIdentityFold()
| bool CombinerHelper::matchBuildVectorIdentityFold | ( | MachineInstr & | MI, |
| Register & | MatchInfo ) const |
Definition at line 6882 of file CombinerHelper.cpp.
References llvm::LLT::getElementType(), llvm::LLT::getSizeInBits(), llvm::Hi, llvm::Lo, llvm::MIPatternMatch::m_any_of(), llvm::MIPatternMatch::m_GBitcast(), llvm::MIPatternMatch::m_GBuildVector(), llvm::MIPatternMatch::m_GBuildVectorTrunc(), llvm::MIPatternMatch::m_GCst(), llvm::MIPatternMatch::m_GImplicitDef(), llvm::MIPatternMatch::m_GLShr(), llvm::MIPatternMatch::m_GTrunc(), llvm::MIPatternMatch::m_Reg(), MI, llvm::MIPatternMatch::mi_match(), and MRI.
◆ matchCanonicalizeFCmp()
| bool CombinerHelper::matchCanonicalizeFCmp | ( | const MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Definition at line 116 of file CombinerHelperCompares.cpp.
References assert(), B(), llvm::cast(), llvm::GFConstant::getConstant(), llvm::CmpInst::getSwappedPredicate(), llvm::CmpInst::isFPPredicate(), MI, MRI, and std::swap().
◆ matchCanonicalizeICmp()
| bool CombinerHelper::matchCanonicalizeICmp | ( | const MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Definition at line 91 of file CombinerHelperCompares.cpp.
References assert(), B(), llvm::cast(), llvm::GIConstant::getConstant(), llvm::CmpInst::getSwappedPredicate(), llvm::CmpInst::isIntPredicate(), MI, MRI, and std::swap().
◆ matchCastOfBuildVector()
| bool CombinerHelper::matchCastOfBuildVector | ( | const MachineInstr & | CastMI, |
| const MachineInstr & | BVMI, | ||
| BuildFnTy & | MatchInfo ) const |
Definition at line 296 of file CombinerHelperCasts.cpp.
References B(), llvm::cast(), llvm::GMergeLikeInstr::getNumSources(), llvm::MachineInstr::getOpcode(), llvm::GenericMachineInstr::getReg(), llvm::LLT::getScalarType(), I, isLegalOrBeforeLegalizer(), MRI, and llvm::SmallVectorTemplateBase< T, bool >::push_back().
◆ matchCastOfInteger()
| bool CombinerHelper::matchCastOfInteger | ( | const MachineInstr & | CastMI, |
| APInt & | MatchInfo ) const |
Definition at line 361 of file CombinerHelperCasts.cpp.
References llvm::cast(), llvm::getIConstantFromReg(), llvm::MachineInstr::getOpcode(), llvm::GenericMachineInstr::getReg(), llvm::LLT::getScalarSizeInBits(), llvm::GCastOp::getSrcReg(), isConstantLegalOrBeforeLegalizer(), and MRI.
◆ matchCastOfSelect()
| bool CombinerHelper::matchCastOfSelect | ( | const MachineInstr & | Cast, |
| const MachineInstr & | SelectMI, | ||
| BuildFnTy & | MatchInfo ) const |
Definition at line 200 of file CombinerHelperCasts.cpp.
References B(), llvm::cast(), Cond, llvm::MachineInstr::getOpcode(), llvm::GenericMachineInstr::getReg(), isLegalOrBeforeLegalizer(), MRI, and Select.
◆ matchCombineAddP2IToPtrAdd()
| bool CombinerHelper::matchCombineAddP2IToPtrAdd | ( | MachineInstr & | MI, |
| std::pair< Register, bool > & | PtrRegAndCommute ) const |
Transform G_ADD (G_PTRTOINT x), y -> G_PTRTOINT (G_PTR_ADD x, y) Transform G_ADD y, (G_PTRTOINT x) -> G_PTRTOINT (G_PTR_ADD x, y)
Definition at line 2592 of file CombinerHelper.cpp.
References assert(), llvm::LLT::getScalarSizeInBits(), llvm::MIPatternMatch::m_GPtrToInt(), llvm::MIPatternMatch::m_Reg(), MI, llvm::MIPatternMatch::mi_match(), and MRI.
◆ matchCombineAnyExtTrunc()
| bool CombinerHelper::matchCombineAnyExtTrunc | ( | MachineInstr & | MI, |
| Register & | Reg ) const |
Transform anyext(trunc(x)) to x.
Definition at line 2665 of file CombinerHelper.cpp.
References assert(), llvm::canReplaceReg(), llvm::getSrcRegIgnoringCopies(), llvm::Register::isValid(), llvm::MIPatternMatch::m_all_of(), llvm::MIPatternMatch::m_GTrunc(), llvm::MIPatternMatch::m_Reg(), llvm::MIPatternMatch::m_SpecificType(), MI, llvm::MIPatternMatch::mi_match(), and MRI.
◆ matchCombineBuildUnmerge()
| bool CombinerHelper::matchCombineBuildUnmerge | ( | MachineInstr & | MI, |
| MachineRegisterInfo & | MRI, | ||
| Register & | UnmergeSrc ) const |
Definition at line 3493 of file CombinerHelper.cpp.
References llvm::cast(), llvm::getDefIgnoringCopies(), llvm::getOpcodeDef(), I, isLegal(), IsPreLegalize, llvm::LLT::isVector(), MI, MRI, and llvm::Undef.
◆ matchCombineConcatVectors()
| bool CombinerHelper::matchCombineConcatVectors | ( | MachineInstr & | MI, |
| SmallVector< Register > & | Ops ) const |
If MI is G_CONCAT_VECTORS, try to combine it.
Returns true if MI changed. Right now, we support:
- concat_vector(undef, undef) => undef
- concat_vector(build_vector(A, B), build_vector(C, D)) =>
build_vector(A, B, C, D)
Check if the G_CONCAT_VECTORS MI is undef or if it can be flattened into a build_vector. In the first case Ops will be empty In the second case Ops will contain the operands needed to produce the flattened build_vector.
- Precondition
- MI.getOpcode() == G_CONCAT_VECTORS.
Definition at line 315 of file CombinerHelper.cpp.
References AbstractManglingParser< Derived, Alloc >::Ops, assert(), Builder, isLegalOrBeforeLegalizer(), MI, MRI, and llvm::Undef.
◆ matchCombineConstPtrAddToI2P()
| bool CombinerHelper::matchCombineConstPtrAddToI2P | ( | MachineInstr & | MI, |
| APInt & | NewCst ) const |
Definition at line 2635 of file CombinerHelper.cpp.
References Builder, llvm::cast(), llvm::getIConstantVRegVal(), llvm::MIPatternMatch::m_GIntToPtr(), llvm::MIPatternMatch::m_ICst(), MI, llvm::MIPatternMatch::mi_match(), MRI, llvm::APInt::sextOrTrunc(), and llvm::APInt::zextOrTrunc().
◆ matchCombineCopy()
| bool CombinerHelper::matchCombineCopy | ( | MachineInstr & | MI | ) | const |
Definition at line 231 of file CombinerHelper.cpp.
References llvm::canReplaceReg(), MI, and MRI.
Referenced by tryCombineCopy().
◆ matchCombineDivRem()
| bool CombinerHelper::matchCombineDivRem | ( | MachineInstr & | MI, |
| MachineInstr *& | OtherMI ) const |
Try to combine G_[SU]DIV and G_[SU]REM into a single G_[SU]DIVREM when their source operands are identical.
Definition at line 1498 of file CombinerHelper.cpp.
References isLegalOrBeforeLegalizer(), llvm_unreachable, matchEqualDefs(), MI, MRI, and UseMI.
◆ matchCombineExtendingLoads()
| bool CombinerHelper::matchCombineExtendingLoads | ( | MachineInstr & | MI, |
| PreferredTuple & | MatchInfo ) const |
Definition at line 723 of file CombinerHelper.cpp.
References llvm::dyn_cast(), llvm::GAnyLoad::getDstReg(), getExtLoadOpcForExtend(), llvm::GMemOperation::getMMO(), llvm::GLoadStore::getPointerReg(), llvm::LLT::getSizeInBits(), llvm::has_single_bit(), llvm::isa(), isPreLegalize(), llvm::LLT::isScalar(), llvm::LegalizeActions::Legal, LI, MI, MRI, and UseMI.
Referenced by tryCombineExtendingLoads().
◆ matchCombineExtractedVectorLoad()
| bool CombinerHelper::matchCombineExtractedVectorLoad | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Combine a G_EXTRACT_VECTOR_ELT of a load into a narrowed load.
Definition at line 1341 of file CombinerHelper.cpp.
References assert(), B(), llvm::CallingConv::C, llvm::commonAlignment(), DL, llvm::MachineInstr::eraseFromParent(), llvm::CallingConv::Fast, llvm::MachinePointerInfo::getAddrSpace(), llvm::MachineMemOperand::getAlign(), llvm::Function::getContext(), llvm::MachineFunction::getDataLayout(), llvm::MachineFunction::getFunction(), llvm::getIConstantVRegVal(), llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::MachineFunction::getMachineMemOperand(), llvm::getOpcodeDef(), llvm::MachineInstr::getOperand(), llvm::MachineInstr::getParent(), llvm::MachineMemOperand::getPointerInfo(), llvm::MachineOperand::getReg(), llvm::LLT::getSizeInBits(), getTargetLowering(), llvm::LegalizerHelper::getVectorElementPointer(), llvm::MachinePointerInfo::getWithOffset(), II, llvm::LLT::isByteSized(), isLegalOrBeforeLegalizer(), MI, MRI, llvm::Offset, and llvm::Vector.
◆ matchCombineFAddFMAFMulToFMadOrFMA()
| bool CombinerHelper::matchCombineFAddFMAFMulToFMadOrFMA | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Transform (fadd (fma x, y, (fmul u, v)), z) -> (fma x, y, (fma u, v, z)) (fadd (fmad x, y, (fmul u, v)), z) -> (fmad x, y, (fmad u, v, z))
Definition at line 6365 of file CombinerHelper.cpp.
References llvm::Aggressive, assert(), B(), canCombineFMadOrFMA(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), hasMoreUses(), isContractableFMul(), MI, MRI, std::swap(), X, and Y.
◆ matchCombineFAddFMulToFMadOrFMA()
| bool CombinerHelper::matchCombineFAddFMulToFMadOrFMA | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Transform (fadd (fmul x, y), z) -> (fma x, y, z) (fadd (fmul x, y), z) -> (fmad x, y, z)
Definition at line 6256 of file CombinerHelper.cpp.
References llvm::Aggressive, assert(), B(), canCombineFMadOrFMA(), hasMoreUses(), isContractableFMul(), MI, MRI, and std::swap().
◆ matchCombineFAddFpExtFMulToFMadOrFMA()
| bool CombinerHelper::matchCombineFAddFpExtFMulToFMadOrFMA | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Transform (fadd (fpext (fmul x, y)), z) -> (fma (fpext x), (fpext y), z) (fadd (fpext (fmul x, y)), z) -> (fmad (fpext x), (fpext y), z)
Definition at line 6305 of file CombinerHelper.cpp.
References llvm::Aggressive, assert(), B(), canCombineFMadOrFMA(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), hasMoreUses(), isContractableFMul(), llvm::MIPatternMatch::m_GFPExt(), llvm::MIPatternMatch::m_MInstr(), MI, llvm::MIPatternMatch::mi_match(), MRI, and std::swap().
◆ matchCombineFAddFpExtFMulToFMadOrFMAAggressive()
| bool CombinerHelper::matchCombineFAddFpExtFMulToFMadOrFMAAggressive | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Definition at line 6431 of file CombinerHelper.cpp.
References llvm::Aggressive, assert(), B(), canCombineFMadOrFMA(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), getReg(), llvm::MachineOperand::getReg(), hasMoreUses(), isContractableFMul(), llvm::MIPatternMatch::m_GFPExt(), llvm::MIPatternMatch::m_MInstr(), MI, llvm::MIPatternMatch::mi_match(), MRI, std::swap(), X, and Y.
◆ matchCombineFMinMaxNaN()
| bool CombinerHelper::matchCombineFMinMaxNaN | ( | MachineInstr & | MI, |
| unsigned & | Info ) const |
Definition at line 6771 of file CombinerHelper.cpp.
References llvm::getConstantFPVRegVal(), llvm::ConstantFP::getValueAPF(), llvm::APFloat::isNaN(), MI, and MRI.
◆ matchCombineFSubFMulToFMadOrFMA()
| bool CombinerHelper::matchCombineFSubFMulToFMadOrFMA | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Transform (fsub (fmul x, y), z) -> (fma x, y, -z) (fsub (fmul x, y), z) -> (fmad x, y, -z)
Definition at line 6558 of file CombinerHelper.cpp.
References llvm::Aggressive, assert(), B(), canCombineFMadOrFMA(), hasMoreUses(), isContractableFMul(), MI, and MRI.
◆ matchCombineFSubFNegFMulToFMadOrFMA()
| bool CombinerHelper::matchCombineFSubFNegFMulToFMadOrFMA | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Transform (fsub (fneg (fmul, x, y)), z) -> (fma (fneg x), y, (fneg z)) (fsub (fneg (fmul, x, y)), z) -> (fmad (fneg x), y, (fneg z))
Definition at line 6611 of file CombinerHelper.cpp.
References llvm::Aggressive, assert(), B(), canCombineFMadOrFMA(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), isContractableFMul(), llvm::MIPatternMatch::m_GFNeg(), llvm::MIPatternMatch::m_MInstr(), MI, llvm::MIPatternMatch::mi_match(), and MRI.
◆ matchCombineFSubFpExtFMulToFMadOrFMA()
| bool CombinerHelper::matchCombineFSubFpExtFMulToFMadOrFMA | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Transform (fsub (fpext (fmul x, y)), z) -> (fma (fpext x), (fpext y), (fneg z)) (fsub (fpext (fmul x, y)), z) -> (fmad (fpext x), (fpext y), (fneg z))
Definition at line 6659 of file CombinerHelper.cpp.
References llvm::Aggressive, assert(), B(), canCombineFMadOrFMA(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), isContractableFMul(), llvm::MIPatternMatch::m_GFPExt(), llvm::MIPatternMatch::m_MInstr(), MI, llvm::MIPatternMatch::mi_match(), and MRI.
◆ matchCombineFSubFpExtFNegFMulToFMadOrFMA()
| bool CombinerHelper::matchCombineFSubFpExtFNegFMulToFMadOrFMA | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Transform (fsub (fpext (fneg (fmul x, y))), z) -> (fneg (fma (fpext x), (fpext y), z)) (fsub (fpext (fneg (fmul x, y))), z) -> (fneg (fmad (fpext x), (fpext y), z))
Definition at line 6711 of file CombinerHelper.cpp.
References llvm::Aggressive, assert(), B(), canCombineFMadOrFMA(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), isContractableFMul(), llvm::MIPatternMatch::m_GFNeg(), llvm::MIPatternMatch::m_GFPExt(), llvm::MIPatternMatch::m_MInstr(), MI, llvm::MIPatternMatch::mi_match(), MRI, X, and Y.
◆ matchCombineI2PToP2I()
| bool CombinerHelper::matchCombineI2PToP2I | ( | MachineInstr & | MI, |
| Register & | Reg ) const |
Transform IntToPtr(PtrToInt(x)) to x if cast is in the same address space.
Definition at line 2566 of file CombinerHelper.cpp.
References assert(), llvm::MIPatternMatch::m_all_of(), llvm::MIPatternMatch::m_GPtrToInt(), llvm::MIPatternMatch::m_Reg(), llvm::MIPatternMatch::m_SpecificType(), MI, llvm::MIPatternMatch::mi_match(), and MRI.
◆ matchCombineIndexedLoadStore()
| bool CombinerHelper::matchCombineIndexedLoadStore | ( | MachineInstr & | MI, |
| IndexedLoadStoreMatchInfo & | MatchInfo ) const |
Definition at line 1446 of file CombinerHelper.cpp.
References llvm::IndexedLoadStoreMatchInfo::Addr, llvm::IndexedLoadStoreMatchInfo::Base, llvm::cast(), llvm::GMemOperation::isAtomic(), llvm::IndexedLoadStoreMatchInfo::IsPre, MI, llvm::IndexedLoadStoreMatchInfo::Offset, and llvm::IndexedLoadStoreMatchInfo::RematOffset.
◆ matchCombineInsertVecElts()
| bool CombinerHelper::matchCombineInsertVecElts | ( | MachineInstr & | MI, |
| SmallVectorImpl< Register > & | MatchInfo ) const |
Definition at line 3115 of file CombinerHelper.cpp.
References llvm::all_of(), assert(), llvm::LLT::getNumElements(), llvm::MachineInstr::getNumOperands(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), I, llvm::LLT::isScalableVector(), isValid(), llvm::LLT::isVector(), llvm::MIPatternMatch::m_GInsertVecElt(), llvm::MIPatternMatch::m_ICst(), llvm::MIPatternMatch::m_MInstr(), llvm::MIPatternMatch::m_Reg(), MI, llvm::MIPatternMatch::mi_match(), MRI, and llvm::SmallVectorImpl< T >::resize().
◆ matchCombineLoadWithAndMask()
| bool CombinerHelper::matchCombineLoadWithAndMask | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Match (and (load x), mask) -> zextload x.
Definition at line 904 of file CombinerHelper.cpp.
References assert(), B(), llvm::APInt::countr_one(), llvm::dyn_cast(), llvm::MachineInstr::eraseFromParent(), llvm::GAnyLoad::getDstReg(), llvm::getIConstantVRegValWithLookThrough(), llvm::GMemOperation::getMemSizeInBits(), llvm::GMemOperation::getMMO(), llvm::MachineMemOperand::getPointerInfo(), llvm::GLoadStore::getPointerReg(), llvm::LLT::getSizeInBits(), llvm::LocationSize::getValue(), isLegalOrBeforeLegalizer(), llvm::APInt::isMask(), llvm::isPowerOf2_32(), llvm::GMemOperation::isSimple(), llvm::LegalityQuery::MemDesc::MemoryTy, MI, MRI, RegSize, and llvm::LLT::scalar().
◆ matchCombineMergeUnmerge()
| bool CombinerHelper::matchCombineMergeUnmerge | ( | MachineInstr & | MI, |
| Register & | MatchInfo ) const |
Fold away a merge of an unmerge of the corresponding values.
Definition at line 2240 of file CombinerHelper.cpp.
References llvm::cast(), llvm::SmallVectorImpl< T >::emplace_back(), llvm::getOpcodeDef(), I, Merge, MI, MRI, and llvm::SmallVectorTemplateCommon< T, typename >::size().
◆ matchCombineMulToShl()
| bool CombinerHelper::matchCombineMulToShl | ( | MachineInstr & | MI, |
| unsigned & | ShiftVal ) const |
Transform a multiply by a power-of-2 value to a left shift.
Definition at line 2133 of file CombinerHelper.cpp.
References assert(), llvm::getIConstantVRegValWithLookThrough(), MI, and MRI.
◆ matchCombineShiftToUnmerge()
| bool CombinerHelper::matchCombineShiftToUnmerge | ( | MachineInstr & | MI, |
| unsigned | TargetShiftSize, | ||
| unsigned & | ShiftVal ) const |
Reduce a shift by a constant to an unmerge and a shift on a half sized type.
This will not produce a shift smaller than TargetShiftSize.
Definition at line 2458 of file CombinerHelper.cpp.
References assert(), llvm::getIConstantVRegValWithLookThrough(), MI, MRI, and Size.
Referenced by tryCombineShiftToUnmerge().
◆ matchCombineShlOfExtend()
| bool CombinerHelper::matchCombineShlOfExtend | ( | MachineInstr & | MI, |
| RegisterImmPair & | MatchData ) const |
Definition at line 2187 of file CombinerHelper.cpp.
References assert(), llvm::TargetLoweringBase::getPreferredShiftAmountTy(), getTargetLowering(), llvm::RegisterImmPair::Imm, llvm::isConstantOrConstantSplatVector(), isLegalOrBeforeLegalizer(), LI, llvm::MIPatternMatch::m_GAnyExt(), llvm::MIPatternMatch::m_GSExt(), llvm::MIPatternMatch::m_GZExt(), llvm::MIPatternMatch::m_Reg(), MI, llvm::MIPatternMatch::mi_match(), MRI, llvm::RegisterImmPair::Reg, and VT.
◆ matchCombineShuffleConcat()
| bool CombinerHelper::matchCombineShuffleConcat | ( | MachineInstr & | MI, |
| SmallVector< Register > & | Ops ) const |
Definition at line 424 of file CombinerHelper.cpp.
References AbstractManglingParser< Derived, Alloc >::Ops, llvm::dyn_cast(), llvm::LLT::getNumElements(), isLegalOrBeforeLegalizer(), MI, and MRI.
◆ matchCombineShuffleVector()
| bool CombinerHelper::matchCombineShuffleVector | ( | MachineInstr & | MI, |
| SmallVectorImpl< Register > & | Ops ) const |
Check if the G_SHUFFLE_VECTOR MI can be replaced by a concat_vectors.
Ops will contain the operands needed to produce the flattened concat_vectors.
- Precondition
- MI.getOpcode() == G_SHUFFLE_VECTOR.
Definition at line 519 of file CombinerHelper.cpp.
References AbstractManglingParser< Derived, Alloc >::Ops, assert(), Builder, MI, and MRI.
Referenced by tryCombineShuffleVector().
◆ matchCombineSubToAdd()
| bool CombinerHelper::matchCombineSubToAdd | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Definition at line 2159 of file CombinerHelper.cpp.
References B(), llvm::cast(), llvm::getIConstantFromReg(), isConstantLegalOrBeforeLegalizer(), isLegalOrBeforeLegalizer(), MI, MRI, llvm::MachineInstr::NoSWrap, llvm::MachineInstr::NoUWrap, Observer, and llvm::Sub.
◆ matchCombineTruncOfShift()
| bool CombinerHelper::matchCombineTruncOfShift | ( | MachineInstr & | MI, |
| std::pair< MachineInstr *, LLT > & | MatchInfo ) const |
Transform trunc (shl x, K) to shl (trunc x), K if K < VT.getScalarSizeInBits().
Transforms trunc ([al]shr x, K) to (trunc ([al]shr (MidVT (trunc x)), K)) if K <= (MidVT.getScalarSizeInBits() - VT.getScalarSizeInBits()) MidVT is obtained by finding a legal type between the trunc's src and dst types.
Definition at line 2712 of file CombinerHelper.cpp.
References assert(), llvm::getDefIgnoringCopies(), llvm::KnownBits::getMaxValue(), getMidVTForTruncRightShiftCombine(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::LLT::getScalarSizeInBits(), getTargetLowering(), isLegalOrBeforeLegalizer(), MI, MRI, llvm::APInt::uge(), llvm::APInt::ugt(), and VT.
◆ matchCombineUnmergeConstant()
| bool CombinerHelper::matchCombineUnmergeConstant | ( | MachineInstr & | MI, |
| SmallVectorImpl< APInt > & | Csts ) const |
Transform G_UNMERGE Constant -> Constant1, Constant2, ...
Definition at line 2322 of file CombinerHelper.cpp.
References llvm::APFloat::bitcastToAPInt(), llvm::SmallVectorImpl< T >::emplace_back(), llvm::MachineOperand::getCImm(), llvm::MachineOperand::getFPImm(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::LLT::getSizeInBits(), llvm::ConstantInt::getValue(), llvm::ConstantFP::getValueAPF(), llvm::APInt::lshr(), MI, MRI, and llvm::APInt::trunc().
◆ matchCombineUnmergeMergeToPlainValues()
| bool CombinerHelper::matchCombineUnmergeMergeToPlainValues | ( | MachineInstr & | MI, |
| SmallVectorImpl< Register > & | Operands ) const |
Transform <ty,...> G_UNMERGE(G_MERGE ty X, Y, Z) -> ty X, Y, Z.
Definition at line 2267 of file CombinerHelper.cpp.
References assert(), llvm::cast(), llvm::getOpcodeDef(), llvm::LLT::getSizeInBits(), MI, MRI, peekThroughBitcast(), and llvm::SmallVectorTemplateBase< T, bool >::push_back().
◆ matchCombineUnmergeUndef()
| bool CombinerHelper::matchCombineUnmergeUndef | ( | MachineInstr & | MI, |
| std::function< void(MachineIRBuilder &)> & | MatchInfo ) const |
Transform G_UNMERGE G_IMPLICIT_DEF -> G_IMPLICIT_DEF, G_IMPLICIT_DEF, ...
Definition at line 2362 of file CombinerHelper.cpp.
References B(), llvm::isa(), MI, and MRI.
◆ matchCombineUnmergeWithDeadLanesToTrunc()
| bool CombinerHelper::matchCombineUnmergeWithDeadLanesToTrunc | ( | MachineInstr & | MI | ) | const |
Transform X, Y<dead> = G_UNMERGE Z -> X = G_TRUNC Z.
Definition at line 2377 of file CombinerHelper.cpp.
◆ matchCombineUnmergeZExtToZExt()
| bool CombinerHelper::matchCombineUnmergeZExtToZExt | ( | MachineInstr & | MI | ) | const |
Transform X, Y = G_UNMERGE(G_ZEXT(Z)) -> X = G_ZEXT(Z); Y = G_CONSTANT 0.
Definition at line 2400 of file CombinerHelper.cpp.
References assert(), llvm::LLT::getSizeInBits(), llvm::LLT::isVector(), llvm::MIPatternMatch::m_GZExt(), llvm::MIPatternMatch::m_Reg(), MI, llvm::MIPatternMatch::mi_match(), and MRI.
◆ matchCombineZextTrunc()
| bool CombinerHelper::matchCombineZextTrunc | ( | MachineInstr & | MI, |
| Register & | Reg ) const |
Transform zext(trunc(x)) to x.
Definition at line 2679 of file CombinerHelper.cpp.
References assert(), llvm::canReplaceReg(), llvm::LLT::getScalarSizeInBits(), llvm::MIPatternMatch::m_all_of(), llvm::MIPatternMatch::m_GTrunc(), llvm::MIPatternMatch::m_Reg(), llvm::MIPatternMatch::m_SpecificType(), MI, llvm::MIPatternMatch::mi_match(), MRI, and VT.
◆ matchCommuteConstantToRHS()
| bool CombinerHelper::matchCommuteConstantToRHS | ( | MachineInstr & | MI | ) | const |
Match constant LHS ops that should be commuted.
Definition at line 7173 of file CombinerHelper.cpp.
References llvm::getIConstantVRegVal(), MI, and MRI.
◆ matchCommuteFPConstantToRHS()
| bool CombinerHelper::matchCommuteFPConstantToRHS | ( | MachineInstr & | MI | ) | const |
Match constant LHS FP ops that should be commuted.
Definition at line 7203 of file CombinerHelper.cpp.
References llvm::MIPatternMatch::m_GFCstOrSplat(), MI, llvm::MIPatternMatch::mi_match(), and MRI.
◆ matchCommuteShift()
| bool CombinerHelper::matchCommuteShift | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Definition at line 2035 of file CombinerHelper.cpp.
References assert(), B(), llvm::cast(), getTargetLowering(), isPreLegalize(), llvm::MIPatternMatch::m_any_of(), llvm::MIPatternMatch::m_GAdd(), llvm::MIPatternMatch::m_GOr(), llvm::MIPatternMatch::m_ICstOrSplat(), llvm::MIPatternMatch::m_OneNonDBGUse(), llvm::MIPatternMatch::m_Reg(), MI, llvm::MIPatternMatch::mi_match(), MRI, S1, and X.
◆ matchConstantFoldBinOp()
| bool CombinerHelper::matchConstantFoldBinOp | ( | MachineInstr & | MI, |
| APInt & | MatchInfo ) const |
Do constant folding when opportunities are exposed after MIR building.
Definition at line 5241 of file CombinerHelper.cpp.
References llvm::ConstantFoldBinOp(), MI, and MRI.
◆ matchConstantFoldCastOp()
| bool CombinerHelper::matchConstantFoldCastOp | ( | MachineInstr & | MI, |
| APInt & | MatchInfo ) const |
Do constant folding when opportunities are exposed after MIR building.
Definition at line 5228 of file CombinerHelper.cpp.
References llvm::ConstantFoldCastOp(), MI, and MRI.
◆ matchConstantFoldFMA()
| bool CombinerHelper::matchConstantFoldFMA | ( | MachineInstr & | MI, |
| ConstantFP *& | MatchInfo ) const |
Constant fold G_FMA/G_FMAD.
Definition at line 5264 of file CombinerHelper.cpp.
References _, assert(), llvm::APFloat::fusedMultiplyAdd(), llvm::getConstantFPVRegVal(), llvm::ConstantFP::getValueAPF(), MI, MRI, and llvm::APFloatBase::rmNearestTiesToEven.
◆ matchConstantFoldFPBinOp()
| bool CombinerHelper::matchConstantFoldFPBinOp | ( | MachineInstr & | MI, |
| ConstantFP *& | MatchInfo ) const |
Do constant FP folding when opportunities are exposed after MIR building.
Definition at line 5252 of file CombinerHelper.cpp.
References llvm::ConstantFoldFPBinOp(), MI, and MRI.
◆ matchConstantFPOp()
| bool CombinerHelper::matchConstantFPOp | ( | const MachineOperand & | MOP, |
| double | C ) const |
Return true if MOP is defined by a G_FCONSTANT or splat with a value exactly equal to C.
Definition at line 2967 of file CombinerHelper.cpp.
References llvm::CallingConv::C, llvm::MachineOperand::getReg(), llvm::MachineOperand::isReg(), llvm::MIPatternMatch::m_GFCstOrSplat(), llvm::MIPatternMatch::mi_match(), and MRI.
◆ matchConstantLargerBitWidth()
| bool CombinerHelper::matchConstantLargerBitWidth | ( | MachineInstr & | MI, |
| unsigned | ConstIdx ) const |
Checks if constant at ConstIdx is larger than MI 's bitwidth.
- Parameters
-
ConstIdx Index of the constant
Definition at line 2997 of file CombinerHelper.cpp.
References llvm::getIConstantVRegValWithLookThrough(), llvm::LLT::getSizeInBits(), MI, and MRI.
◆ matchConstantOp()
| bool CombinerHelper::matchConstantOp | ( | const MachineOperand & | MOP, |
| int64_t | C ) const |
Return true if MOP is defined by a G_CONSTANT or splat with a value equal to C.
Definition at line 2957 of file CombinerHelper.cpp.
References llvm::CallingConv::C, llvm::MachineOperand::getReg(), llvm::isConstantOrConstantSplatVector(), llvm::MachineOperand::isReg(), MI, and MRI.
◆ matchConstantSelectCmp()
| bool CombinerHelper::matchConstantSelectCmp | ( | MachineInstr & | MI, |
| unsigned & | OpIdx ) const |
Return true if a G_SELECT instruction MI has a constant comparison.
If true, OpIdx will store the operand index of the known selected value.
Definition at line 2847 of file CombinerHelper.cpp.
References llvm::cast(), llvm::GSelect::getCondReg(), llvm::isConstantOrConstantSplatVector(), MI, MRI, and OpIdx.
◆ matchCtls()
| bool CombinerHelper::matchCtls | ( | MachineInstr & | CtlzMI, |
| BuildFnTy & | MatchInfo ) const |
Definition at line 8532 of file CombinerHelper.cpp.
References assert(), B(), llvm::BitWidth, llvm::LegalizeActions::Custom, llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::LegalizeActions::Legal, LI, llvm::MIPatternMatch::m_DeferredReg(), llvm::MIPatternMatch::m_GAShr(), llvm::MIPatternMatch::m_GOr(), llvm::MIPatternMatch::m_GShl(), llvm::MIPatternMatch::m_GXor(), llvm::MIPatternMatch::m_OneUse(), llvm::MIPatternMatch::m_Reg(), llvm::MIPatternMatch::m_SpecificICst(), llvm::MIPatternMatch::mi_match(), MRI, llvm::LegalizeActions::WidenScalar, and X.
◆ matchDivByPow2()
| bool CombinerHelper::matchDivByPow2 | ( | MachineInstr & | MI, |
| bool | IsSigned ) const |
Given an G_SDIV MI expressing a signed divided by a pow2 constant, return expressions that implements it by shifting.
Definition at line 5917 of file CombinerHelper.cpp.
References assert(), llvm::CallingConv::C, llvm::cast(), llvm::dyn_cast(), llvm::matchUnaryPredicate(), MI, and MRI.
◆ matchEqualDefs()
| bool CombinerHelper::matchEqualDefs | ( | const MachineOperand & | MOP1, |
| const MachineOperand & | MOP2 ) const |
Return true if MOP1 and MOP2 are register operands are defined by equivalent instructions.
Definition at line 2860 of file CombinerHelper.cpp.
References llvm::any_of(), Builder, llvm::dyn_cast(), llvm::MachineInstr::findRegisterDefOperandIdx(), llvm::getDefSrcRegIgnoringCopies(), llvm::GMemOperation::getMemSizeInBits(), llvm::MachineOperand::getReg(), llvm::MachineInstr::isDereferenceableInvariantLoad(), llvm::MachineOperand::isReg(), llvm::MachineInstr::mayLoadOrStore(), and MRI.
Referenced by matchBinOpSameVal(), matchCombineDivRem(), matchHoistLogicOpWithSameOpcodeHands(), and matchSelectSameVal().
◆ matchExtendThroughPhis()
| bool CombinerHelper::matchExtendThroughPhis | ( | MachineInstr & | MI, |
| MachineInstr *& | ExtMI ) const |
Definition at line 4307 of file CombinerHelper.cpp.
References Builder, llvm::cast(), DefMI, llvm::getDefIgnoringCopies(), llvm::MachineInstr::getOpcode(), I, llvm::SmallPtrSetImpl< PtrType >::insert(), MI, MRI, PHI, and llvm::SmallPtrSetImplBase::size().
◆ matchExtOfExt()
| bool CombinerHelper::matchExtOfExt | ( | const MachineInstr & | FirstMI, |
| const MachineInstr & | SecondMI, | ||
| BuildFnTy & | MatchInfo ) const |
Definition at line 232 of file CombinerHelperCasts.cpp.
References B(), llvm::cast(), llvm::First, llvm::MachineInstr::getFlag(), llvm::MachineInstr::getOpcode(), llvm::GenericMachineInstr::getReg(), llvm::GCastOp::getSrcReg(), isLegalOrBeforeLegalizer(), MRI, llvm::MachineInstr::NoFlags, and llvm::MachineInstr::NonNeg.
◆ matchExtractAllEltsFromBuildVector()
| bool CombinerHelper::matchExtractAllEltsFromBuildVector | ( | MachineInstr & | MI, |
| SmallVectorImpl< std::pair< Register, MachineInstr * > > & | MatchInfo ) const |
Definition at line 4459 of file CombinerHelper.cpp.
References llvm::SmallBitVector::all(), assert(), llvm::getIConstantVRegVal(), llvm::LLT::getNumElements(), II, MI, MRI, and llvm::SmallBitVector::set().
◆ matchExtractVecEltBuildVec()
| bool CombinerHelper::matchExtractVecEltBuildVec | ( | MachineInstr & | MI, |
| Register & | Reg ) const |
Definition at line 4406 of file CombinerHelper.cpp.
References assert(), llvm::getIConstantVRegValWithLookThrough(), llvm::getMVTForLLT(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), getTargetLowering(), MI, and MRI.
◆ matchExtractVectorElement()
| bool CombinerHelper::matchExtractVectorElement | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Combine extract vector element.
Definition at line 33 of file CombinerHelperVectorOps.cpp.
References B(), llvm::cast(), llvm::getIConstantVRegValWithLookThrough(), llvm::GExtractVectorElement::getIndexReg(), llvm::LLT::getNumElements(), llvm::GenericMachineInstr::getReg(), llvm::GExtractVectorElement::getVectorReg(), llvm::LLT::isFixedVector(), isLegalOrBeforeLegalizer(), MI, MRI, and llvm::Vector.
◆ matchExtractVectorElementWithBuildVector()
| bool CombinerHelper::matchExtractVectorElementWithBuildVector | ( | const MachineInstr & | MI, |
| const MachineInstr & | MI2, | ||
| BuildFnTy & | MatchInfo ) const |
Combine extract vector element with a build vector on the vector register.
Definition at line 148 of file CombinerHelperVectorOps.cpp.
References B(), llvm::cast(), llvm::getIConstantFromReg(), llvm::GExtractVectorElement::getIndexReg(), llvm::getMVTForLLT(), llvm::GenericMachineInstr::getReg(), llvm::GMergeLikeInstr::getSourceReg(), getTargetLowering(), llvm::GExtractVectorElement::getVectorReg(), MI, MRI, and llvm::Vector.
◆ matchExtractVectorElementWithBuildVectorTrunc()
| bool CombinerHelper::matchExtractVectorElementWithBuildVectorTrunc | ( | const MachineOperand & | MO, |
| BuildFnTy & | MatchInfo ) const |
Combine extract vector element with a build vector trunc on the vector register.
Definition at line 188 of file CombinerHelperVectorOps.cpp.
References B(), llvm::cast(), llvm::getDefIgnoringCopies(), llvm::getIConstantVRegValWithLookThrough(), llvm::GExtractVectorElement::getIndexReg(), llvm::getMVTForLLT(), llvm::getOpcodeDef(), llvm::GenericMachineInstr::getReg(), llvm::MachineOperand::getReg(), llvm::GMergeLikeInstr::getSourceReg(), getTargetLowering(), llvm::GExtractVectorElement::getVectorReg(), isLegalOrBeforeLegalizer(), MRI, and llvm::Vector.
◆ matchExtractVectorElementWithDifferentIndices()
| bool CombinerHelper::matchExtractVectorElementWithDifferentIndices | ( | const MachineOperand & | MO, |
| BuildFnTy & | MatchInfo ) const |
Combine extract vector element with a insert vector element on the vector register and different indices.
Definition at line 91 of file CombinerHelperVectorOps.cpp.
References B(), llvm::cast(), llvm::getDefIgnoringCopies(), llvm::getIConstantVRegValWithLookThrough(), llvm::GExtractVectorElement::getIndexReg(), llvm::getOpcodeDef(), llvm::GenericMachineInstr::getReg(), llvm::MachineOperand::getReg(), llvm::GExtractVectorElement::getVectorReg(), MRI, and llvm::Vector.
◆ matchExtractVectorElementWithShuffleVector()
| bool CombinerHelper::matchExtractVectorElementWithShuffleVector | ( | const MachineInstr & | MI, |
| const MachineInstr & | MI2, | ||
| BuildFnTy & | MatchInfo ) const |
Combine extract vector element with a shuffle vector on the vector register.
Definition at line 255 of file CombinerHelperVectorOps.cpp.
References assert(), B(), llvm::cast(), llvm::getIConstantFromReg(), llvm::GExtractVectorElement::getIndexReg(), llvm::GShuffleVector::getMask(), llvm::LLT::getNumElements(), llvm::GenericMachineInstr::getReg(), llvm::GShuffleVector::getSrc1Reg(), llvm::GShuffleVector::getSrc2Reg(), isConstantLegalOrBeforeLegalizer(), isLegalOrBeforeLegalizer(), llvm::LLT::isVector(), MI, MRI, and llvm::Offset.
◆ matchFoldAMinusC1MinusC2()
| bool CombinerHelper::matchFoldAMinusC1MinusC2 | ( | const MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Definition at line 8208 of file CombinerHelper.cpp.
References B(), llvm::cast(), llvm::getIConstantFromReg(), llvm::GBinOp::getLHSReg(), llvm::GenericMachineInstr::getReg(), llvm::GBinOp::getRHSReg(), MI, and MRI.
◆ matchFoldAMinusC1PlusC2()
| bool CombinerHelper::matchFoldAMinusC1PlusC2 | ( | const MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Definition at line 8254 of file CombinerHelper.cpp.
References llvm::Add, B(), llvm::cast(), llvm::getIConstantFromReg(), MI, MRI, and llvm::Sub.
◆ matchFoldAPlusC1MinusC2()
| bool CombinerHelper::matchFoldAPlusC1MinusC2 | ( | const MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Definition at line 8162 of file CombinerHelper.cpp.
References llvm::Add, B(), llvm::cast(), llvm::getIConstantFromReg(), MI, MRI, and llvm::Sub.
◆ matchFoldBinOpIntoSelect()
| bool CombinerHelper::matchFoldBinOpIntoSelect | ( | MachineInstr & | MI, |
| unsigned & | SelectOpNo ) const |
Push a binary operator through a select on constants.
binop (select cond, K0, K1), K2 -> select cond, (binop K0, K2), (binop K1, K2)
Definition at line 3870 of file CombinerHelper.cpp.
References llvm::isAllOnesOrAllOnesSplat(), llvm::isConstantOrConstantVector(), llvm::isNullOrNullSplat(), MI, MRI, and Select.
◆ matchFoldC1Minus2MinusC2()
| bool CombinerHelper::matchFoldC1Minus2MinusC2 | ( | const MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Definition at line 8231 of file CombinerHelper.cpp.
References B(), llvm::cast(), llvm::getIConstantFromReg(), llvm::GBinOp::getLHSReg(), llvm::GenericMachineInstr::getReg(), llvm::GBinOp::getRHSReg(), MI, and MRI.
◆ matchFoldC2MinusAPlusC1()
| bool CombinerHelper::matchFoldC2MinusAPlusC1 | ( | const MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Definition at line 8185 of file CombinerHelper.cpp.
References llvm::Add, B(), llvm::cast(), llvm::getIConstantFromReg(), MI, MRI, and llvm::Sub.
◆ matchFPowIExpansion()
| bool CombinerHelper::matchFPowIExpansion | ( | MachineInstr & | MI, |
| int64_t | Exponent ) const |
Match FPOWI if it's safe to extend it into a series of multiplications.
Definition at line 8112 of file CombinerHelper.cpp.
References llvm::Exponent, getTargetLowering(), llvm::TargetLoweringBase::isBeneficialToExpandPowI(), and MI.
◆ matchFreezeOfSingleMaybePoisonOperand()
| bool CombinerHelper::matchFreezeOfSingleMaybePoisonOperand | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Definition at line 245 of file CombinerHelper.cpp.
References B(), llvm::canCreateUndefOrPoison(), llvm::cast(), llvm::MachineInstr::findRegisterUseOperand(), llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::MachineInstr::getParent(), llvm::MachineOperand::getReg(), llvm::isa(), llvm::isGuaranteedNotToBeUndefOrPoison(), llvm::MachineInstr::isPHI(), MI, MRI, Observer, replaceRegOpWith(), replaceRegWith(), TRI, and llvm::MachineInstr::uses().
◆ matchFsubToFneg()
| bool CombinerHelper::matchFsubToFneg | ( | MachineInstr & | MI, |
| Register & | MatchInfo ) const |
Definition at line 6176 of file CombinerHelper.cpp.
References assert(), llvm::MachineInstr::FmNsz, llvm::getFConstantSplat(), llvm::getFConstantVRegValWithLookThrough(), MI, and MRI.
◆ matchFunnelShiftToRotate()
| bool CombinerHelper::matchFunnelShiftToRotate | ( | MachineInstr & | MI | ) | const |
Match an FSHL or FSHR that can be combined to a ROTR or ROTL rotate.
Definition at line 4579 of file CombinerHelper.cpp.
References assert(), isLegalOrBeforeLegalizer(), MI, MRI, Opc, X, and Y.
◆ matchHoistLogicOpWithSameOpcodeHands()
| bool CombinerHelper::matchHoistLogicOpWithSameOpcodeHands | ( | MachineInstr & | MI, |
| InstructionStepsMatchInfo & | MatchInfo ) const |
Match (logic_op (op x...), (op y...)) -> (op (logic_op x, y))
Definition at line 3188 of file CombinerHelper.cpp.
References assert(), llvm::Function::getContext(), llvm::getDefIgnoringCopies(), llvm::MachineFunction::getFunction(), llvm::MachineInstr::getNumOperands(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), getTargetLowering(), isLegalOrBeforeLegalizer(), llvm::MachineOperand::isReg(), llvm::TargetLoweringBase::isTruncateFree(), llvm::LLT::isValid(), llvm::Register::isValid(), llvm::TargetLoweringBase::isZExtFree(), matchEqualDefs(), MI, MRI, llvm::SmallVectorTemplateBase< T, bool >::push_back(), X, and Y.
◆ matchICmpToLHSKnownBits()
| bool CombinerHelper::matchICmpToLHSKnownBits | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
- Returns
- true if a G_ICMP
MIcan be replaced with its LHS based off of KnownBits information.
Definition at line 4676 of file CombinerHelper.cpp.
References assert(), B(), llvm::getICmpTrueVal(), llvm::LLT::getSizeInBits(), getTargetLowering(), llvm::CmpInst::ICMP_EQ, llvm::CmpInst::isEquality(), isLegalOrBeforeLegalizer(), llvm::LLT::isVector(), llvm::MIPatternMatch::m_SpecificICst(), MI, llvm::MIPatternMatch::mi_match(), MRI, and VT.
◆ matchICmpToTrueFalseKnownBits()
| bool CombinerHelper::matchICmpToTrueFalseKnownBits | ( | MachineInstr & | MI, |
| int64_t & | MatchInfo ) const |
- Returns
- true if a G_ICMP instruction
MIcan be replaced with a true or false constant based off of KnownBits information.
Definition at line 4632 of file CombinerHelper.cpp.
References assert(), llvm::ICmpInst::compare(), llvm::getICmpTrueVal(), getTargetLowering(), llvm::CmpInst::ICMP_UGE, llvm::CmpInst::ICMP_ULT, MI, MRI, and VT.
◆ matchInsertExtractVecEltOutOfBounds()
| bool CombinerHelper::matchInsertExtractVecEltOutOfBounds | ( | MachineInstr & | MI | ) | const |
Return true if a G_{EXTRACT,INSERT}_VECTOR_ELT has an out of range index.
Definition at line 2830 of file CombinerHelper.cpp.
References assert(), llvm::getIConstantVRegVal(), llvm::LLT::getNumElements(), llvm::LLT::isScalableVector(), MI, and MRI.
◆ matchInsertVectorElementOOB()
| bool CombinerHelper::matchInsertVectorElementOOB | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Combine insert vector element OOB.
Definition at line 342 of file CombinerHelperVectorOps.cpp.
References B(), llvm::cast(), llvm::getIConstantVRegValWithLookThrough(), llvm::LLT::getNumElements(), llvm::LLT::isFixedVector(), isLegalOrBeforeLegalizer(), MI, and MRI.
◆ matchLoadOrCombine()
| bool CombinerHelper::matchLoadOrCombine | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Match expression trees of the form.
And check if the tree can be replaced with a M-bit load + possibly a bswap.
Definition at line 4193 of file CombinerHelper.cpp.
References assert(), bigEndianByteAt(), llvm::CallingConv::C, DL, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::end(), llvm::CallingConv::Fast, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::find(), llvm::Function::getContext(), llvm::MachineFunction::getDataLayout(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getMachineMemOperand(), llvm::GMemOperation::getMMO(), llvm::MachineMemOperand::getPointerInfo(), llvm::GLoadStore::getPointerReg(), getTargetLowering(), isBigEndian(), llvm::DataLayout::isBigEndian(), isLegalOrBeforeLegalizer(), littleEndianByteAt(), llvm::LegalityQuery::MemDesc::MemoryTy, MI, and MRI.
◆ matchLshrOfTruncOfLshr()
| bool CombinerHelper::matchLshrOfTruncOfLshr | ( | MachineInstr & | MI, |
| LshrOfTruncOfLshr & | MatchInfo, | ||
| MachineInstr & | ShiftMI ) const |
Fold (lshr (trunc (lshr x, C1)), C2) -> trunc (shift x, (C1 + C2))
Definition at line 2071 of file CombinerHelper.cpp.
References assert(), llvm::APInt::getBitWidth(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::LLT::getScalarSizeInBits(), llvm::LshrOfTruncOfLshr::InnerShiftTy, llvm::MIPatternMatch::m_ICstOrSplat(), llvm::LshrOfTruncOfLshr::Mask, llvm::LshrOfTruncOfLshr::MaskVal, MI, llvm::MIPatternMatch::mi_match(), MRI, llvm::LshrOfTruncOfLshr::ShiftAmt, llvm::LshrOfTruncOfLshr::ShiftAmtTy, llvm::LshrOfTruncOfLshr::Src, and llvm::APInt::zext().
◆ matchMergeXAndUndef()
| bool CombinerHelper::matchMergeXAndUndef | ( | const MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Definition at line 30 of file CombinerHelperArtifacts.cpp.
References assert(), B(), llvm::cast(), isLegalOrBeforeLegalizer(), Merge, MI, and MRI.
◆ matchMergeXAndZero()
| bool CombinerHelper::matchMergeXAndZero | ( | const MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Definition at line 59 of file CombinerHelperArtifacts.cpp.
References B(), llvm::cast(), isLegalOrBeforeLegalizer(), Merge, MI, and MRI.
◆ matchMulOBy0()
| bool CombinerHelper::matchMulOBy0 | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Match: (G_*MULO x, 0) -> 0 + no carry out.
Definition at line 5399 of file CombinerHelper.cpp.
References assert(), B(), isConstantLegalOrBeforeLegalizer(), llvm::MIPatternMatch::m_SpecificICstOrSplat(), MI, llvm::MIPatternMatch::mi_match(), and MRI.
◆ matchMulOBy2()
| bool CombinerHelper::matchMulOBy2 | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Match: (G_UMULO x, 2) -> (G_UADDO x, x) (G_SMULO x, 2) -> (G_SADDO x, x)
Definition at line 5380 of file CombinerHelper.cpp.
References assert(), B(), Builder, llvm::MIPatternMatch::m_SpecificICstOrSplat(), MI, llvm::MIPatternMatch::mi_match(), MRI, Observer, and Opc.
◆ matchMulOfVScale()
| bool CombinerHelper::matchMulOfVScale | ( | const MachineOperand & | MO, |
| BuildFnTy & | MatchInfo ) const |
Definition at line 384 of file CombinerHelperVectorOps.cpp.
References B(), llvm::cast(), llvm::getIConstantVRegVal(), llvm::GenericMachineInstr::getReg(), llvm::MachineOperand::getReg(), llvm::GVScale::getSrc(), MRI, and llvm::Mul.
◆ matchNarrowBinop()
| bool CombinerHelper::matchNarrowBinop | ( | const MachineInstr & | TruncMI, |
| const MachineInstr & | BinopMI, | ||
| BuildFnTy & | MatchInfo ) const |
trunc (binop X, C) --> binop (trunc X, trunc C).
Definition at line 336 of file CombinerHelperCasts.cpp.
References B(), llvm::cast(), llvm::GBinOp::getLHSReg(), llvm::MachineInstr::getOpcode(), llvm::GenericMachineInstr::getReg(), llvm::GBinOp::getRHSReg(), isLegalOrBeforeLegalizer(), and MRI.
◆ matchNarrowBinopFeedingAnd()
| bool CombinerHelper::matchNarrowBinopFeedingAnd | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
- Returns
- true if it is possible to narrow the width of a scalar binop feeding a G_AND instruction
MI.
Definition at line 5289 of file CombinerHelper.cpp.
References assert(), B(), Builder, llvm::getDefIgnoringCopies(), llvm::getIConstantVRegValWithLookThrough(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::LLT::getSizeInBits(), getTargetLowering(), isLegalOrBeforeLegalizer(), llvm::LLT::isScalar(), MI, MRI, Observer, and llvm::LLT::scalar().
◆ matchNonNegZext()
| bool CombinerHelper::matchNonNegZext | ( | const MachineOperand & | MO, |
| BuildFnTy & | MatchInfo ) const |
Combine zext nneg to sext.
Definition at line 116 of file CombinerHelperCasts.cpp.
References B(), llvm::cast(), llvm::getMVTForLLT(), llvm::GenericMachineInstr::getReg(), llvm::MachineOperand::getReg(), llvm::GCastOp::getSrcReg(), getTargetLowering(), isLegalOrBeforeLegalizer(), and MRI.
◆ matchNotCmp()
| bool CombinerHelper::matchNotCmp | ( | MachineInstr & | MI, |
| SmallVectorImpl< Register > & | RegsToNegate ) const |
Combine inverting a result of a compare into the opposite cond code.
Definition at line 3678 of file CombinerHelper.cpp.
References assert(), Builder, llvm::getIConstantSplatSExtVal(), I, isConstValidTrue(), llvm::MIPatternMatch::m_GXor(), llvm::MIPatternMatch::m_ICst(), llvm::MIPatternMatch::m_Reg(), MI, llvm::MIPatternMatch::mi_match(), MRI, llvm::SmallVectorTemplateBase< T, bool >::push_back(), and llvm::SmallVectorTemplateCommon< T, typename >::size().
◆ matchOperandIsKnownToBeAPowerOfTwo()
| bool CombinerHelper::matchOperandIsKnownToBeAPowerOfTwo | ( | MachineInstr & | MI, |
| unsigned | OpIdx ) const |
Check if operand OpIdx is known to be a power of 2.
Definition at line 3056 of file CombinerHelper.cpp.
References llvm::MachineOperand::getReg(), llvm::isKnownToBeAPowerOfTwo(), MI, MRI, OpIdx, and VT.
◆ matchOperandIsUndef()
| bool CombinerHelper::matchOperandIsUndef | ( | MachineInstr & | MI, |
| unsigned | OpIdx ) const |
Check if operand OpIdx is undef.
Definition at line 3049 of file CombinerHelper.cpp.
References llvm::getOpcodeDef(), llvm::MachineOperand::getReg(), llvm::MachineOperand::isReg(), MI, MRI, and OpIdx.
◆ matchOptBrCondByInvertingCond()
| bool CombinerHelper::matchOptBrCondByInvertingCond | ( | MachineInstr & | MI, |
| MachineInstr *& | BrCond ) const |
If a brcond's true block is not the fallthrough, make it so by inverting the condition and swapping operands.
Definition at line 1593 of file CombinerHelper.cpp.
References assert(), llvm::MachineOperand::getMBB(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), MBB, and MI.
◆ matchOr()
| bool CombinerHelper::matchOr | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
◆ matchOrShiftToFunnelShift()
| bool CombinerHelper::matchOrShiftToFunnelShift | ( | MachineInstr & | MI, |
| bool | AllowScalarConstants, | ||
| BuildFnTy & | MatchInfo ) const |
Definition at line 4526 of file CombinerHelper.cpp.
References assert(), B(), llvm::BitWidth, isLegalOrBeforeLegalizer(), llvm::MIPatternMatch::m_GLShr(), llvm::MIPatternMatch::m_GOr(), llvm::MIPatternMatch::m_GShl(), llvm::MIPatternMatch::m_GSub(), llvm::MIPatternMatch::m_ICstOrSplat(), llvm::MIPatternMatch::m_Reg(), llvm::MIPatternMatch::m_SpecificICstOrSplat(), MI, llvm::MIPatternMatch::mi_match(), and MRI.
◆ matchOverlappingAnd()
| bool CombinerHelper::matchOverlappingAnd | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Fold and(and(x, C1), C2) -> C1&C2 ? and(x, C1&C2) : 0.
and(and(x, C1), C2) -> C1&C2 ? and(x, C1&C2) : 0
Definition at line 3340 of file CombinerHelper.cpp.
References assert(), B(), llvm::MIPatternMatch::m_GAnd(), llvm::MIPatternMatch::m_ICst(), llvm::MIPatternMatch::m_Reg(), MI, llvm::MIPatternMatch::mi_match(), MRI, and replaceRegWith().
◆ matchPtrAddImmedChain()
| bool CombinerHelper::matchPtrAddImmedChain | ( | MachineInstr & | MI, |
| PtrAddChain & | MatchInfo ) const |
Definition at line 1743 of file CombinerHelper.cpp.
References llvm::PtrAddChain::Bank, llvm::PtrAddChain::Base, llvm::sampleprof::Base, llvm::TargetLoweringBase::AddrMode::BaseOffs, llvm::dyn_cast(), llvm::PtrAddChain::Flags, llvm::MachineInstr::getFlags(), llvm::getIConstantVRegValWithLookThrough(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::GenericMachineInstr::getReg(), llvm::MachineOperand::getReg(), getRegBank(), llvm::APInt::getSExtValue(), llvm::getTypeForLLT(), llvm::TargetLoweringBase::AddrMode::HasBaseReg, llvm::PtrAddChain::Imm, llvm::MachineInstr::InBounds, MI, MRI, llvm::MachineInstr::NoUSWrap, llvm::MachineInstr::NoUWrap, and UseMI.
◆ matchPtrAddZero()
| bool CombinerHelper::matchPtrAddZero | ( | MachineInstr & | MI | ) | const |
}
Combine G_PTR_ADD with nullptr to G_INTTOPTR
Definition at line 3831 of file CombinerHelper.cpp.
References assert(), Builder, llvm::cast(), DL, llvm::getIConstantVRegVal(), llvm::isBuildVectorAllZeros(), MI, and MRI.
◆ matchReassocCommBinOp()
| bool CombinerHelper::matchReassocCommBinOp | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Reassociate commutative binary operations like G_ADD.
Definition at line 5212 of file CombinerHelper.cpp.
References MI, Opc, and tryReassocBinOp().
◆ matchReassocConstantInnerLHS()
| bool CombinerHelper::matchReassocConstantInnerLHS | ( | GPtrAdd & | MI, |
| MachineInstr * | LHS, | ||
| MachineInstr * | RHS, | ||
| BuildFnTy & | MatchInfo ) const |
Definition at line 5040 of file CombinerHelper.cpp.
References B(), llvm::cast(), llvm::MachineInstr::InBounds, llvm::MIPatternMatch::m_GCst(), llvm::MIPatternMatch::m_GPtrAdd(), llvm::MIPatternMatch::m_OneNonDBGUse(), llvm::MIPatternMatch::m_Reg(), MI, llvm::MIPatternMatch::mi_match(), MRI, llvm::MachineInstr::NoUSWrap, llvm::MachineInstr::NoUWrap, and Observer.
Referenced by matchReassocPtrAdd().
◆ matchReassocConstantInnerRHS()
| bool CombinerHelper::matchReassocConstantInnerRHS | ( | GPtrAdd & | MI, |
| MachineInstr * | RHS, | ||
| BuildFnTy & | MatchInfo ) const |
Definition at line 4996 of file CombinerHelper.cpp.
References B(), Builder, llvm::getIConstantVRegVal(), llvm::MachineInstr::InBounds, MI, MRI, llvm::MachineInstr::NoUSWrap, llvm::MachineInstr::NoUWrap, and Observer.
Referenced by matchReassocPtrAdd().
◆ matchReassocFoldConstantsInSubTree()
| bool CombinerHelper::matchReassocFoldConstantsInSubTree | ( | GPtrAdd & | MI, |
| MachineInstr * | LHS, | ||
| MachineInstr * | RHS, | ||
| BuildFnTy & | MatchInfo ) const |
Definition at line 5092 of file CombinerHelper.cpp.
References B(), llvm::dyn_cast(), llvm::getIConstantVRegVal(), llvm::MachineInstr::InBounds, MI, MRI, llvm::MachineInstr::NoUSWrap, llvm::MachineInstr::NoUWrap, and Observer.
Referenced by matchReassocPtrAdd().
◆ matchReassocPtrAdd()
| bool CombinerHelper::matchReassocPtrAdd | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Reassociate pointer calculations with G_ADD involved, to allow better addressing mode usage.
Definition at line 5139 of file CombinerHelper.cpp.
References llvm::cast(), matchReassocConstantInnerLHS(), matchReassocConstantInnerRHS(), matchReassocFoldConstantsInSubTree(), MI, and MRI.
◆ matchRedundantAnd()
| bool CombinerHelper::matchRedundantAnd | ( | MachineInstr & | MI, |
| Register & | Replacement ) const |
- Returns
- true if
MIis a G_AND instruction whose operands are x and y where x & y == x or x & y == y. (E.g., one of operands is all-ones value.)
- Parameters
-
[in] MI - The G_AND instruction. [out] Replacement - A register the G_AND should be replaced with on success.
Definition at line 3367 of file CombinerHelper.cpp.
References assert(), llvm::canReplaceReg(), llvm::KnownBits::isUnknown(), MI, MRI, llvm::KnownBits::One, VT, and llvm::KnownBits::Zero.
◆ matchRedundantBinOpInEquality()
| bool CombinerHelper::matchRedundantBinOpInEquality | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Transform: (X + Y) == X -> Y == 0 (X - Y) == X -> Y == 0 (X ^ Y) == X -> Y == 0 (X + Y) != X -> Y != 0 (X - Y) != X -> Y != 0 (X ^ Y) != X -> Y != 0.
Definition at line 7085 of file CombinerHelper.cpp.
References assert(), B(), llvm::CmpInst::isEquality(), llvm::MIPatternMatch::m_any_of(), llvm::MIPatternMatch::m_c_GICmp(), llvm::MIPatternMatch::m_GAdd(), llvm::MIPatternMatch::m_GSub(), llvm::MIPatternMatch::m_GXor(), llvm::MIPatternMatch::m_Pred(), llvm::MIPatternMatch::m_Reg(), MI, llvm::MIPatternMatch::mi_match(), MRI, Register, X, and Y.
◆ matchRedundantNegOperands()
| bool CombinerHelper::matchRedundantNegOperands | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Transform (fadd x, fneg(y)) -> (fsub x, y) (fadd fneg(x), y) -> (fsub y, x) (fsub x, fneg(y)) -> (fadd x, y) (fmul fneg(x), fneg(y)) -> (fmul x, y) (fdiv fneg(x), fneg(y)) -> (fdiv x, y) (fmad fneg(x), fneg(y), z) -> (fmad x, y, z) (fma fneg(x), fneg(y), z) -> (fma x, y, z)
fold (fsub x, fneg(y)) -> (fadd x, y)
Definition at line 6130 of file CombinerHelper.cpp.
References assert(), B(), isLegalOrBeforeLegalizer(), llvm::MIPatternMatch::m_GFAdd(), llvm::MIPatternMatch::m_GFNeg(), llvm::MIPatternMatch::m_GFSub(), llvm::MIPatternMatch::m_Reg(), MI, llvm::MIPatternMatch::mi_match(), MRI, Observer, Opc, X, and Y.
◆ matchRedundantOr()
| bool CombinerHelper::matchRedundantOr | ( | MachineInstr & | MI, |
| Register & | Replacement ) const |
- Returns
- true if
MIis a G_OR instruction whose operands are x and y where x | y == x or x | y == y. (E.g., one of operands is all-zeros value.)
- Parameters
-
[in] MI - The G_OR instruction. [out] Replacement - A register the G_OR should be replaced with on success.
Definition at line 3423 of file CombinerHelper.cpp.
References assert(), llvm::canReplaceReg(), MI, MRI, llvm::KnownBits::One, VT, and llvm::KnownBits::Zero.
◆ matchRedundantSExtInReg()
| bool CombinerHelper::matchRedundantSExtInReg | ( | MachineInstr & | MI | ) | const |
- Returns
- true if
MIis a G_SEXT_INREG that can be erased.
Definition at line 3465 of file CombinerHelper.cpp.
◆ matchRedundantSextInReg()
| bool CombinerHelper::matchRedundantSextInReg | ( | MachineInstr & | Root, |
| MachineInstr & | Other, | ||
| BuildFnTy & | MatchInfo ) const |
Definition at line 382 of file CombinerHelperCasts.cpp.
References assert(), B(), llvm::canReplaceReg(), llvm::MachineOperand::getImm(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), MRI, Observer, and llvm::Other.
◆ matchRepeatedFPDivisor()
| bool CombinerHelper::matchRepeatedFPDivisor | ( | MachineInstr & | MI, |
| SmallVector< MachineInstr * > & | MatchInfo ) const |
Definition at line 6802 of file CombinerHelper.cpp.
References assert(), llvm::SmallVectorTemplateCommon< T, typename >::back(), llvm::TargetLowering::combineRepeatedFPDivisors(), dominates(), llvm::MachineInstr::FmArcp, getTargetLowering(), llvm::isConstantOrConstantSplatVectorFP(), MI, MRI, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::SmallVectorTemplateCommon< T, typename >::size(), std::swap(), X, and Y.
◆ matchRotateOutOfRange()
| bool CombinerHelper::matchRotateOutOfRange | ( | MachineInstr & | MI | ) | const |
Definition at line 4603 of file CombinerHelper.cpp.
References assert(), llvm::CallingConv::C, llvm::dyn_cast(), llvm::matchUnaryPredicate(), MI, and MRI.
◆ matchSDivOrSRemByConst()
| bool CombinerHelper::matchSDivOrSRemByConst | ( | MachineInstr & | MI | ) | const |
Combine G_SDIV or G_SREM by constant into a multiply by magic constant.
Definition at line 5718 of file CombinerHelper.cpp.
References assert(), llvm::CallingConv::C, llvm::LLT::changeElementSize(), llvm::getApproximateEVTForLLT(), llvm::LLT::getScalarSizeInBits(), getTargetLowering(), llvm::isConstantOrConstantVector(), llvm::MachineInstr::IsExact, isLegal(), isLegalOrBeforeLegalizer(), isLegalOrHasWidenScalar(), LI, llvm::matchUnaryPredicate(), MI, and MRI.
◆ matchSelect()
| bool CombinerHelper::matchSelect | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Combine selects.
Definition at line 7663 of file CombinerHelper.cpp.
References llvm::cast(), MI, and Select.
◆ matchSelectIMinMax()
| bool CombinerHelper::matchSelectIMinMax | ( | const MachineOperand & | MO, |
| BuildFnTy & | MatchInfo ) const |
Combine select to integer min/max.
Definition at line 7563 of file CombinerHelper.cpp.
References B(), llvm::cast(), llvm::MachineOperand::getReg(), llvm::CmpInst::getSwappedPredicate(), llvm::CmpInst::ICMP_SGE, llvm::CmpInst::ICMP_SGT, llvm::CmpInst::ICMP_SLE, llvm::CmpInst::ICMP_SLT, llvm::CmpInst::ICMP_UGE, llvm::CmpInst::ICMP_UGT, llvm::CmpInst::ICMP_ULE, llvm::CmpInst::ICMP_ULT, llvm::CmpInst::isEquality(), isLegalOrBeforeLegalizer(), llvm::LLT::isPointerOrPointerVector(), MRI, Select, and std::swap().
◆ matchSelectSameVal()
| bool CombinerHelper::matchSelectSameVal | ( | MachineInstr & | MI | ) | const |
Optimize (cond ? x : x) -> x.
Definition at line 3035 of file CombinerHelper.cpp.
References assert(), llvm::canReplaceReg(), matchEqualDefs(), MI, and MRI.
◆ matchSextInRegOfLoad()
| bool CombinerHelper::matchSextInRegOfLoad | ( | MachineInstr & | MI, |
| std::tuple< Register, unsigned > & | MatchInfo ) const |
Match sext_inreg(load p), imm -> sextload p.
Definition at line 1047 of file CombinerHelper.cpp.
References assert(), llvm::getOpcodeDef(), llvm::LLT::getSizeInBits(), isLegalOrBeforeLegalizer(), llvm::isPowerOf2_32(), llvm::LLT::isVector(), llvm::LegalityQuery::MemDesc::MemoryTy, MI, MRI, and llvm::LLT::scalar().
◆ matchSextOfTrunc()
| bool CombinerHelper::matchSextOfTrunc | ( | const MachineOperand & | MO, |
| BuildFnTy & | MatchInfo ) const |
Combine sext of trunc.
Definition at line 28 of file CombinerHelperCasts.cpp.
References B(), llvm::cast(), llvm::getDefIgnoringCopies(), llvm::MachineInstr::getFlag(), llvm::GenericMachineInstr::getReg(), llvm::MachineOperand::getReg(), llvm::LLT::getScalarSizeInBits(), llvm::GCastOp::getSrcReg(), isLegalOrBeforeLegalizer(), MRI, and llvm::MachineInstr::NoSWrap.
◆ matchSextTruncSextLoad()
| bool CombinerHelper::matchSextTruncSextLoad | ( | MachineInstr & | MI | ) | const |
Definition at line 1014 of file CombinerHelper.cpp.
References assert(), llvm::getOpcodeDef(), llvm::MIPatternMatch::m_GTrunc(), llvm::MIPatternMatch::m_Reg(), MI, llvm::MIPatternMatch::mi_match(), and MRI.
◆ matchShiftImmedChain()
| bool CombinerHelper::matchShiftImmedChain | ( | MachineInstr & | MI, |
| RegisterImmPair & | MatchInfo ) const |
Fold (shift (shift base, x), y) -> (shift base (x+y))
Definition at line 1838 of file CombinerHelper.cpp.
References assert(), llvm::sampleprof::Base, llvm::getIConstantVRegValWithLookThrough(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::RegisterImmPair::Imm, MI, MRI, and llvm::RegisterImmPair::Reg.
◆ matchShiftOfShiftedLogic()
| bool CombinerHelper::matchShiftOfShiftedLogic | ( | MachineInstr & | MI, |
| ShiftOfShiftedLogic & | MatchInfo ) const |
If we have a shift-by-constant of a bitwise logic op that itself has a shift-by-constant operand with identical opcode, we may be able to convert that into 2 independent shifts followed by the logic op.
Definition at line 1915 of file CombinerHelper.cpp.
References assert(), llvm::getIConstantVRegValWithLookThrough(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::ShiftOfShiftedLogic::Logic, llvm::ShiftOfShiftedLogic::LogicNonShiftReg, MI, MRI, llvm::ShiftOfShiftedLogic::Shift2, and llvm::ShiftOfShiftedLogic::ValSum.
◆ matchShiftsTooBig()
| bool CombinerHelper::matchShiftsTooBig | ( | MachineInstr & | MI, |
| std::optional< int64_t > & | MatchInfo ) const |
Match shifts greater or equal to the range (the bitwidth of the result datatype, or the effective bitwidth of the source value).
Definition at line 7153 of file CombinerHelper.cpp.
References llvm::CallingConv::C, llvm::dyn_cast(), getMinUselessShift(), llvm::LLT::getScalarSizeInBits(), llvm::matchUnaryPredicate(), MI, MRI, and VT.
◆ matchShlOfVScale()
| bool CombinerHelper::matchShlOfVScale | ( | const MachineOperand & | MO, |
| BuildFnTy & | MatchInfo ) const |
Definition at line 425 of file CombinerHelperVectorOps.cpp.
References B(), llvm::cast(), llvm::getIConstantVRegVal(), llvm::GenericMachineInstr::getReg(), llvm::MachineOperand::getReg(), llvm::GShl::getShiftReg(), llvm::GVScale::getSrc(), llvm::GShl::getSrcReg(), isLegalOrBeforeLegalizer(), MRI, and llvm::APInt::shl().
◆ matchShuffleDisjointMask()
| bool CombinerHelper::matchShuffleDisjointMask | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Turn shuffle a, b, mask -> shuffle undef, b, mask iff mask does not reference a.
Definition at line 8403 of file CombinerHelper.cpp.
References B(), llvm::cast(), commuteMask(), llvm::getOpcodeDef(), isLegalOrBeforeLegalizer(), MI, MRI, and llvm::Undef.
◆ matchShuffleUndefRHS()
| bool CombinerHelper::matchShuffleUndefRHS | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Remove references to rhs if it is undef.
Definition at line 8359 of file CombinerHelper.cpp.
References B(), llvm::cast(), Changed, MI, MRI, llvm::SmallVectorTemplateBase< T, bool >::push_back(), and llvm::ArrayRef< T >::size().
◆ matchSimplifyAddToSub()
| bool CombinerHelper::matchSimplifyAddToSub | ( | MachineInstr & | MI, |
| std::tuple< Register, Register > & | MatchInfo ) const |
Return true if MI is a G_ADD which can be simplified to a G_SUB.
Definition at line 3095 of file CombinerHelper.cpp.
References llvm::MIPatternMatch::m_Neg(), llvm::MIPatternMatch::m_Reg(), MI, llvm::MIPatternMatch::mi_match(), and MRI.
◆ matchSimplifyNegMinMax()
| bool CombinerHelper::matchSimplifyNegMinMax | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Tranform (neg (min/max x, (neg x))) into (max/min x, (neg x)).
Definition at line 7636 of file CombinerHelper.cpp.
References assert(), B(), llvm::getInverseGMinMaxOpcode(), llvm::MachineInstr::getOpcode(), isLegal(), llvm::MIPatternMatch::m_all_of(), llvm::MIPatternMatch::m_any_of(), llvm::MIPatternMatch::m_DeferredReg(), llvm::MIPatternMatch::m_GSMax(), llvm::MIPatternMatch::m_GSMin(), llvm::MIPatternMatch::m_GUMax(), llvm::MIPatternMatch::m_GUMin(), llvm::MIPatternMatch::m_Neg(), llvm::MIPatternMatch::m_OneUse(), llvm::MIPatternMatch::m_Reg(), MI, llvm::MIPatternMatch::mi_match(), MRI, and X.
◆ matchSimplifySelectToMinMax()
| bool CombinerHelper::matchSimplifySelectToMinMax | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
- Returns
- true if it is possible to simplify a select instruction
MIto a min/max instruction of some sort.
Definition at line 7070 of file CombinerHelper.cpp.
References assert(), Cond, llvm::MIPatternMatch::m_GTrunc(), llvm::MIPatternMatch::m_OneNonDBGUse(), llvm::MIPatternMatch::m_Reg(), MI, llvm::MIPatternMatch::mi_match(), and MRI.
◆ matchSubAddSameReg()
| bool CombinerHelper::matchSubAddSameReg | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Transform: (x + y) - y -> x (x + y) - x -> y x - (y + x) -> 0 - y x - (x + z) -> 0 - z.
Definition at line 5452 of file CombinerHelper.cpp.
References assert(), B(), llvm::MIPatternMatch::m_GAdd(), llvm::MIPatternMatch::m_GSub(), llvm::MIPatternMatch::m_ICstOrSplat(), llvm::MIPatternMatch::m_Reg(), llvm::MIPatternMatch::m_SpecificICstOrSplat(), MI, llvm::MIPatternMatch::mi_match(), MRI, X, and Y.
◆ matchSuboCarryOut()
| bool CombinerHelper::matchSuboCarryOut | ( | const MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Definition at line 8455 of file CombinerHelper.cpp.
References llvm::ConstantRange::AlwaysOverflowsHigh, llvm::ConstantRange::AlwaysOverflowsLow, B(), llvm::cast(), llvm::ConstantRange::fromKnownBits(), llvm::GBinOpCarryOut::getCarryOutReg(), llvm::getICmpTrueVal(), llvm::GBinOpCarryOut::getLHSReg(), llvm::GenericMachineInstr::getReg(), llvm::GBinOpCarryOut::getRHSReg(), getTargetLowering(), isConstantLegalOrBeforeLegalizer(), isLegalOrBeforeLegalizer(), llvm::GSubCarryOut::isSigned(), llvm::LLT::isVector(), llvm::ConstantRange::MayOverflow, MI, MRI, llvm::ConstantRange::NeverOverflows, llvm::MachineInstr::NoSWrap, llvm::MachineInstr::NoUWrap, llvm::ConstantRange::signedSubMayOverflow(), llvm::ConstantRange::unsignedSubMayOverflow(), and VT.
◆ matchSubOfVScale()
| bool CombinerHelper::matchSubOfVScale | ( | const MachineOperand & | MO, |
| BuildFnTy & | MatchInfo ) const |
Definition at line 405 of file CombinerHelperVectorOps.cpp.
References B(), llvm::cast(), llvm::GenericMachineInstr::getReg(), llvm::MachineOperand::getReg(), llvm::GVScale::getSrc(), isLegalOrBeforeLegalizer(), MRI, and llvm::Sub.
◆ matchTruncateOfExt()
| bool CombinerHelper::matchTruncateOfExt | ( | const MachineInstr & | Root, |
| const MachineInstr & | ExtMI, | ||
| BuildFnTy & | MatchInfo ) const |
Transform trunc ([asz]ext x) to x or ([asz]ext x) or (trunc x).
Definition at line 137 of file CombinerHelperCasts.cpp.
References B(), llvm::cast(), llvm::MachineInstr::getOpcode(), llvm::GenericMachineInstr::getReg(), llvm::LLT::getScalarSizeInBits(), llvm::GCastOp::getSrcReg(), isLegalOrBeforeLegalizer(), and MRI.
◆ matchTruncBuildVectorFold()
| bool CombinerHelper::matchTruncBuildVectorFold | ( | MachineInstr & | MI, |
| Register & | MatchInfo ) const |
Definition at line 6928 of file CombinerHelper.cpp.
References llvm::MIPatternMatch::m_GBitcast(), llvm::MIPatternMatch::m_GBuildVector(), llvm::MIPatternMatch::m_Reg(), MI, llvm::MIPatternMatch::mi_match(), and MRI.
◆ matchTruncLshrBuildVectorFold()
| bool CombinerHelper::matchTruncLshrBuildVectorFold | ( | MachineInstr & | MI, |
| Register & | MatchInfo ) const |
Definition at line 6939 of file CombinerHelper.cpp.
References llvm::MIPatternMatch::m_GBitcast(), llvm::MIPatternMatch::m_GBuildVector(), llvm::MIPatternMatch::m_GCst(), llvm::MIPatternMatch::m_GLShr(), llvm::MIPatternMatch::m_Reg(), MI, llvm::MIPatternMatch::mi_match(), and MRI.
◆ matchTruncSSatS()
| bool CombinerHelper::matchTruncSSatS | ( | MachineInstr & | MI, |
| Register & | MatchInfo ) const |
Definition at line 6040 of file CombinerHelper.cpp.
References assert(), llvm::LLT::getScalarSizeInBits(), llvm::APInt::getSignedMaxValue(), llvm::APInt::getSignedMinValue(), isLegal(), LI, llvm::MIPatternMatch::m_GSMax(), llvm::MIPatternMatch::m_GSMin(), llvm::MIPatternMatch::m_Reg(), llvm::MIPatternMatch::m_SpecificICstOrSplat(), MI, llvm::MIPatternMatch::mi_match(), MRI, and llvm::APInt::sext().
◆ matchTruncSSatU()
| bool CombinerHelper::matchTruncSSatU | ( | MachineInstr & | MI, |
| Register & | MatchInfo ) const |
Definition at line 6072 of file CombinerHelper.cpp.
References assert(), llvm::APInt::getMaxValue(), llvm::LLT::getScalarSizeInBits(), isLegal(), LI, llvm::MIPatternMatch::m_GSMax(), llvm::MIPatternMatch::m_GSMin(), llvm::MIPatternMatch::m_GUMin(), llvm::MIPatternMatch::m_Reg(), llvm::MIPatternMatch::m_SpecificICstOrSplat(), MI, llvm::MIPatternMatch::mi_match(), MRI, and llvm::APInt::zext().
◆ matchTruncUSatU()
| bool CombinerHelper::matchTruncUSatU | ( | MachineInstr & | MI, |
| MachineInstr & | MinMI ) const |
Definition at line 6104 of file CombinerHelper.cpp.
References assert(), llvm::APInt::getMaxValue(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::LLT::getScalarSizeInBits(), isLegal(), LI, llvm::MIPatternMatch::m_GSMax(), llvm::MIPatternMatch::m_Reg(), llvm::MIPatternMatch::m_SpecificICstOrSplat(), MI, llvm::MIPatternMatch::mi_match(), MRI, and llvm::APInt::zext().
◆ matchTruncUSatUToFPTOUISat()
| bool CombinerHelper::matchTruncUSatUToFPTOUISat | ( | MachineInstr & | MI, |
| MachineInstr & | SrcMI ) const |
Definition at line 6121 of file CombinerHelper.cpp.
References llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), isLegalOrBeforeLegalizer(), LI, MI, and MRI.
◆ matchUDivOrURemByConst()
| bool CombinerHelper::matchUDivOrURemByConst | ( | MachineInstr & | MI | ) | const |
Combine G_UDIV or G_UREM by constant into a multiply by magic constant.
Definition at line 5664 of file CombinerHelper.cpp.
References assert(), llvm::CallingConv::C, llvm::LLT::changeElementSize(), llvm::getApproximateEVTForLLT(), getTargetLowering(), llvm::isConstantOrConstantVector(), llvm::MachineInstr::IsExact, isLegalOrBeforeLegalizer(), llvm::LLT::isVector(), LI, llvm::matchUnaryPredicate(), MI, MRI, and llvm::LLT::scalar().
◆ matchUMulHToLShr()
| bool CombinerHelper::matchUMulHToLShr | ( | MachineInstr & | MI | ) | const |
Definition at line 6004 of file CombinerHelper.cpp.
References assert(), llvm::CallingConv::C, llvm::dyn_cast(), llvm::TargetLoweringBase::getPreferredShiftAmountTy(), getTargetLowering(), isLegalOrBeforeLegalizer(), llvm::matchUnaryPredicate(), MI, and MRI.
◆ matchUndefSelectCmp()
| bool CombinerHelper::matchUndefSelectCmp | ( | MachineInstr & | MI | ) | const |
Return true if a G_SELECT instruction MI has an undef comparison.
Definition at line 2824 of file CombinerHelper.cpp.
References assert(), llvm::getOpcodeDef(), MI, and MRI.
◆ matchUndefShuffleVectorMask()
| bool CombinerHelper::matchUndefShuffleVectorMask | ( | MachineInstr & | MI | ) | const |
Return true if a G_SHUFFLE_VECTOR instruction MI has an undef mask.
Definition at line 2812 of file CombinerHelper.cpp.
References llvm::all_of(), assert(), and MI.
◆ matchUndefStore()
| bool CombinerHelper::matchUndefStore | ( | MachineInstr & | MI | ) | const |
Return true if a G_STORE instruction MI is storing an undef value.
Definition at line 2818 of file CombinerHelper.cpp.
References assert(), llvm::getOpcodeDef(), MI, and MRI.
◆ matchUnmergeValuesAnyExtBuildVector()
| bool CombinerHelper::matchUnmergeValuesAnyExtBuildVector | ( | const MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Definition at line 8277 of file CombinerHelper.cpp.
References AbstractManglingParser< Derived, Alloc >::Ops, B(), llvm::cast(), llvm::dyn_cast(), llvm::LLT::getElementType(), llvm::GUnmerge::getNumDefs(), llvm::LLT::getNumElements(), llvm::MachineInstr::getOperand(), llvm::GenericMachineInstr::getReg(), llvm::MachineOperand::getReg(), llvm::GUnmerge::getSourceReg(), I, llvm::LLT::isFixedVector(), isLegalOrBeforeLegalizer(), MI, and MRI.
◆ matchUseVectorTruncate()
| bool CombinerHelper::matchUseVectorTruncate | ( | MachineInstr & | MI, |
| Register & | MatchInfo ) const |
Definition at line 3581 of file CombinerHelper.cpp.
References llvm::BuildMI(), llvm::cast(), llvm::LLT::changeElementType(), llvm::LLT::getElementCount(), llvm::LLT::getElementType(), llvm::LLT::getNumElements(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::LLT::getScalarType(), I, llvm::details::FixedOrScalableQuantity< LeafTy, ValueTy >::isKnownMultipleOf(), isLegal(), IsPreLegalize, MI, and MRI.
◆ matchXorOfAndWithSameReg()
| bool CombinerHelper::matchXorOfAndWithSameReg | ( | MachineInstr & | MI, |
| std::pair< Register, Register > & | MatchInfo ) const |
Fold (xor (and x, y), y) -> (and (not x), y) {.
Definition at line 3787 of file CombinerHelper.cpp.
References assert(), llvm::MIPatternMatch::m_GAnd(), llvm::MIPatternMatch::m_Reg(), MI, llvm::MIPatternMatch::mi_match(), MRI, std::swap(), X, and Y.
◆ matchZextOfTrunc()
| bool CombinerHelper::matchZextOfTrunc | ( | const MachineOperand & | MO, |
| BuildFnTy & | MatchInfo ) const |
Combine zext of trunc.
Definition at line 81 of file CombinerHelperCasts.cpp.
References B(), llvm::cast(), llvm::getDefIgnoringCopies(), llvm::GenericMachineInstr::getReg(), llvm::MachineOperand::getReg(), llvm::LLT::getScalarSizeInBits(), llvm::GCastOp::getSrcReg(), isLegalOrBeforeLegalizer(), MRI, llvm::MachineInstr::NonNeg, and llvm::MachineInstr::NoUWrap.
◆ replaceInstWithConstant() [1/2]
| void CombinerHelper::replaceInstWithConstant | ( | MachineInstr & | MI, |
| APInt | C ) const |
Replace an instruction with a G_CONSTANT with value C.
Definition at line 3076 of file CombinerHelper.cpp.
References assert(), Builder, llvm::CallingConv::C, and MI.
◆ replaceInstWithConstant() [2/2]
| void CombinerHelper::replaceInstWithConstant | ( | MachineInstr & | MI, |
| int64_t | C ) const |
Replace an instruction with a G_CONSTANT with value C.
Definition at line 3069 of file CombinerHelper.cpp.
References assert(), Builder, llvm::CallingConv::C, and MI.
◆ replaceInstWithFConstant() [1/2]
| void CombinerHelper::replaceInstWithFConstant | ( | MachineInstr & | MI, |
| ConstantFP * | CFP ) const |
Replace an instruction with an G_FCONSTANT with value CFP.
Definition at line 3082 of file CombinerHelper.cpp.
References assert(), Builder, llvm::ConstantFP::getValueAPF(), and MI.
◆ replaceInstWithFConstant() [2/2]
| void CombinerHelper::replaceInstWithFConstant | ( | MachineInstr & | MI, |
| double | C ) const |
Replace an instruction with a G_FCONSTANT with value C.
Definition at line 3062 of file CombinerHelper.cpp.
References assert(), Builder, llvm::CallingConv::C, and MI.
◆ replaceInstWithUndef()
| void CombinerHelper::replaceInstWithUndef | ( | MachineInstr & | MI | ) | const |
Replace an instruction with a G_IMPLICIT_DEF.
Definition at line 3089 of file CombinerHelper.cpp.
◆ replaceOpcodeWith()
| void CombinerHelper::replaceOpcodeWith | ( | MachineInstr & | FromMI, |
| unsigned | ToOpcode ) const |
Replace the opcode in instruction with a new opcode and inform the observer of the changes.
Definition at line 205 of file CombinerHelper.cpp.
References Builder, Observer, and llvm::MachineInstr::setDesc().
Referenced by llvm::AMDGPUCombinerHelper::applyFoldableFneg().
◆ replaceRegOpWith()
| void CombinerHelper::replaceRegOpWith | ( | MachineRegisterInfo & | MRI, |
| MachineOperand & | FromRegOp, | ||
| Register | ToReg ) const |
Replace a single register operand with a new register and inform the observer of the changes.
Definition at line 194 of file CombinerHelper.cpp.
References assert(), llvm::MachineOperand::getParent(), MRI, Observer, and llvm::MachineOperand::setReg().
Referenced by applyCombineExtendingLoads(), llvm::AMDGPUCombinerHelper::applyFoldableFneg(), and matchFreezeOfSingleMaybePoisonOperand().
◆ replaceRegWith()
| void CombinerHelper::replaceRegWith | ( | MachineRegisterInfo & | MRI, |
| Register | FromReg, | ||
| Register | ToReg ) const |
MachineRegisterInfo::replaceRegWith() and inform the observer of the changes.
Definition at line 182 of file CombinerHelper.cpp.
References Builder, MRI, and Observer.
Referenced by applyCombineConcatVectors(), applyCombineCopy(), applyCombineExtendingLoads(), applyCombineShuffleVector(), applyCombineTruncOfShift(), applyCombineUnmergeMergeToPlainValues(), applyCombineUnmergeZExtToZExt(), applyExtractAllEltsFromBuildVector(), llvm::AMDGPUCombinerHelper::applyFoldableFneg(), applyNotCmp(), matchFreezeOfSingleMaybePoisonOperand(), matchOverlappingAnd(), replaceSingleDefInstWithOperand(), and replaceSingleDefInstWithReg().
◆ replaceSingleDefInstWithOperand()
| void CombinerHelper::replaceSingleDefInstWithOperand | ( | MachineInstr & | MI, |
| unsigned | OpIdx ) const |
Delete MI and replace all of its uses with its OpIdx-th operand.
Definition at line 2978 of file CombinerHelper.cpp.
References assert(), llvm::canReplaceReg(), MI, MRI, OpIdx, and replaceRegWith().
◆ replaceSingleDefInstWithReg()
| void CombinerHelper::replaceSingleDefInstWithReg | ( | MachineInstr & | MI, |
| Register | Replacement ) const |
Delete MI and replace all of its uses with Replacement.
Definition at line 2988 of file CombinerHelper.cpp.
References assert(), llvm::canReplaceReg(), MI, MRI, and replaceRegWith().
Referenced by applyExtractVecEltBuildVec(), applySDivOrSRemByConst(), and applyUDivOrURemByConst().
◆ setRegBank()
| void CombinerHelper::setRegBank | ( | Register | Reg, |
| const RegisterBank * | RegBank ) const |
Set the register bank of Reg.
Does nothing if the RegBank is null. This is the counterpart to getRegBank.
Definition at line 218 of file CombinerHelper.cpp.
References MRI.
Referenced by applyPtrAddImmedChain().
◆ tryCombine()
| bool llvm::CombinerHelper::tryCombine | ( | MachineInstr & | MI | ) | const |
Try to transform MI by using all of the above combine functions.
Returns true if changed.
References llvm::Aggressive, llvm::sampleprof::Base, llvm::Exponent, MI, llvm::Offset, and llvm::Other.
◆ tryCombineCopy()
| bool CombinerHelper::tryCombineCopy | ( | MachineInstr & | MI | ) | const |
If MI is COPY, try to combine it.
Returns true if MI changed.
Definition at line 224 of file CombinerHelper.cpp.
References applyCombineCopy(), matchCombineCopy(), and MI.
◆ tryCombineExtendingLoads()
| bool CombinerHelper::tryCombineExtendingLoads | ( | MachineInstr & | MI | ) | const |
If MI is extend that consumes the result of a load, try to combine it.
Returns true if MI changed.
Definition at line 696 of file CombinerHelper.cpp.
References applyCombineExtendingLoads(), matchCombineExtendingLoads(), and MI.
◆ tryCombineMemCpyFamily()
| bool CombinerHelper::tryCombineMemCpyFamily | ( | MachineInstr & | MI, |
| unsigned | MaxLen = 0 ) const |
Optimize memcpy intrinsics et al, e.g.
constant len calls. /p MaxLen if non-zero specifies the max length of a mem libcall to inline.
For example (pre-indexed):
$addr = G_PTR_ADD $base, $offset [...] $val = G_LOAD $addr [...] $whatever = COPY $addr
-->
$val, $addr = G_INDEXED_LOAD $base, $offset, 1 (IsPre) [...] $whatever = COPY $addr
or (post-indexed):
G_STORE $val, $base [...] $addr = G_PTR_ADD $base, $offset [...] $whatever = COPY $addr
-->
$addr = G_INDEXED_STORE $val, $base, $offset [...] $whatever = COPY $addr
Definition at line 1660 of file CombinerHelper.cpp.
References llvm::MachineIRBuilder::getMF(), llvm::LegalizerHelper::Legalized, llvm::LegalizerHelper::lowerMemCpyFamily(), and MI.
◆ tryCombineShiftToUnmerge()
| bool CombinerHelper::tryCombineShiftToUnmerge | ( | MachineInstr & | MI, |
| unsigned | TargetShiftAmount ) const |
Definition at line 2555 of file CombinerHelper.cpp.
References applyCombineShiftToUnmerge(), matchCombineShiftToUnmerge(), and MI.
◆ tryCombineShuffleVector()
| bool CombinerHelper::tryCombineShuffleVector | ( | MachineInstr & | MI | ) | const |
Try to combine G_SHUFFLE_VECTOR into G_CONCAT_VECTORS.
Returns true if MI changed.
- Precondition
- MI.getOpcode() == G_SHUFFLE_VECTOR.
Definition at line 510 of file CombinerHelper.cpp.
References AbstractManglingParser< Derived, Alloc >::Ops, applyCombineShuffleVector(), matchCombineShuffleVector(), and MI.
◆ tryEmitMemcpyInline()
| bool CombinerHelper::tryEmitMemcpyInline | ( | MachineInstr & | MI | ) | const |
Emit loads and stores that perform the given memcpy.
Assumes MI is a G_MEMCPY_INLINE TODO: implement dynamically sized inline memcpy, and rename: s/bool tryEmit/void emit/
Definition at line 1652 of file CombinerHelper.cpp.
References llvm::MachineIRBuilder::getMF(), llvm::LegalizerHelper::Legalized, and MI.
◆ tryReassocBinOp()
| bool CombinerHelper::tryReassocBinOp | ( | unsigned | Opc, |
| Register | DstReg, | ||
| Register | Op0, | ||
| Register | Op1, | ||
| BuildFnTy & | MatchInfo ) const |
Try to reassociate to reassociate operands of a commutative binop.
Definition at line 5171 of file CombinerHelper.cpp.
References B(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), getTargetLowering(), llvm::isConstantOrConstantSplatVector(), MRI, and Opc.
Referenced by matchReassocCommBinOp().
Member Data Documentation
◆ Builder
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Definition at line 116 of file CombinerHelper.h.
Referenced by applyAshShlToSextInreg(), applyBuildFnMO(), applyBuildFnNoErase(), applyBuildInstructionSteps(), applyCombineAddP2IToPtrAdd(), applyCombineConcatVectors(), applyCombineConstantFoldFpUnary(), applyCombineConstPtrAddToI2P(), applyCombineDivRem(), applyCombineExtendingLoads(), applyCombineI2PToP2I(), applyCombineIndexedLoadStore(), applyCombineInsertVecElts(), applyCombineP2IToI2P(), applyCombineShiftToUnmerge(), applyCombineShlOfExtend(), applyCombineShuffleConcat(), applyCombineShuffleToBuildVector(), applyCombineShuffleVector(), applyCombineTruncOfShift(), applyCombineUnmergeConstant(), applyCombineUnmergeMergeToPlainValues(), applyCombineUnmergeWithDeadLanesToTrunc(), applyCombineUnmergeZExtToZExt(), applyExpandFPowI(), llvm::AMDGPUCombinerHelper::applyExpandPromotedF16FMed3(), applyExtendThroughPhis(), applyExtractVecEltBuildVec(), llvm::AMDGPUCombinerHelper::applyFoldableFneg(), applyFoldBinOpIntoSelect(), applyFsubToFneg(), applyFunnelShiftConstantModulo(), applyFunnelShiftToRotate(), applyLshrOfTruncOfLshr(), llvm::SPIRVCombinerHelper::applyMatrixMultiply(), llvm::SPIRVCombinerHelper::applyMatrixTranspose(), applyNotCmp(), applyOptBrCondByInvertingCond(), applyPtrAddZero(), applyRepeatedFPDivisor(), applyRotateOutOfRange(), applySDivByPow2(), applySextInRegOfLoad(), applySextTruncSextLoad(), applyShiftImmedChain(), applyShiftOfShiftedLogic(), applySimplifyAddToSub(), applySimplifyURemByPow2(), llvm::SPIRVCombinerHelper::applySPIRVDistance(), llvm::SPIRVCombinerHelper::applySPIRVFaceForward(), applyTruncSSatS(), applyTruncSSatU(), applyUDivByPow2(), applyUMulHToLShr(), applyUseVectorTruncate(), applyXorOfAndWithSameReg(), buildSDivOrSRemUsingMul(), buildUDivOrURemUsingMul(), CombinerHelper(), getBuilder(), getContext(), getMachineFunction(), getTargetLowering(), matchCombineConcatVectors(), matchCombineConstPtrAddToI2P(), llvm::AMDGPUCombinerHelper::matchCombineFmulWithSelectToFldexp(), matchCombineShuffleVector(), matchEqualDefs(), matchExtendThroughPhis(), matchMulOBy2(), matchNarrowBinopFeedingAnd(), matchNotCmp(), matchPtrAddZero(), matchReassocConstantInnerRHS(), replaceInstWithConstant(), replaceInstWithConstant(), replaceInstWithFConstant(), replaceInstWithFConstant(), replaceInstWithUndef(), replaceOpcodeWith(), and replaceRegWith().
◆ IsPreLegalize
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Definition at line 121 of file CombinerHelper.h.
Referenced by llvm::AMDGPUCombinerHelper::AMDGPUCombinerHelper(), CombinerHelper(), isPreLegalize(), matchCombineBuildUnmerge(), matchUseVectorTruncate(), and llvm::SPIRVCombinerHelper::SPIRVCombinerHelper().
◆ LI
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Definition at line 122 of file CombinerHelper.h.
Referenced by llvm::AMDGPUCombinerHelper::AMDGPUCombinerHelper(), CombinerHelper(), isLegal(), isLegalOrHasWidenScalar(), matchBitfieldExtractFromAnd(), matchBitfieldExtractFromSExtInReg(), matchBitfieldExtractFromShr(), matchBitfieldExtractFromShrAnd(), matchCombineExtendingLoads(), matchCombineShlOfExtend(), matchCtls(), matchSDivOrSRemByConst(), matchTruncSSatS(), matchTruncSSatU(), matchTruncUSatU(), matchTruncUSatUToFPTOUISat(), matchUDivOrURemByConst(), and llvm::SPIRVCombinerHelper::SPIRVCombinerHelper().
◆ MDT
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Definition at line 120 of file CombinerHelper.h.
Referenced by llvm::AMDGPUCombinerHelper::AMDGPUCombinerHelper(), CombinerHelper(), dominates(), and llvm::SPIRVCombinerHelper::SPIRVCombinerHelper().
◆ MRI
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Definition at line 117 of file CombinerHelper.h.
Referenced by applyAshShlToSextInreg(), applyBuildFnMO(), applyCombineAddP2IToPtrAdd(), applyCombineBuildUnmerge(), applyCombineConcatVectors(), applyCombineConstantFoldFpUnary(), applyCombineCopy(), applyCombineExtendingLoads(), applyCombineIndexedLoadStore(), applyCombineInsertVecElts(), applyCombineMulToShl(), applyCombineShiftToUnmerge(), applyCombineShlOfExtend(), applyCombineShuffleConcat(), applyCombineShuffleToBuildVector(), applyCombineShuffleVector(), applyCombineTruncOfShift(), applyCombineUnmergeMergeToPlainValues(), applyCombineUnmergeZExtToZExt(), applyExpandFPowI(), llvm::AMDGPUCombinerHelper::applyExpandPromotedF16FMed3(), applyExtendThroughPhis(), applyExtractAllEltsFromBuildVector(), applyExtractVecEltBuildVec(), llvm::AMDGPUCombinerHelper::applyFoldableFneg(), applyFoldBinOpIntoSelect(), applyFsubToFneg(), applyFunnelShiftConstantModulo(), applyNotCmp(), applyOptBrCondByInvertingCond(), applyPtrAddImmedChain(), applyRepeatedFPDivisor(), applyRotateOutOfRange(), applySDivByPow2(), applySextInRegOfLoad(), applyShiftImmedChain(), applyShiftOfShiftedLogic(), applySimplifyURemByPow2(), llvm::SPIRVCombinerHelper::applySPIRVDistance(), llvm::SPIRVCombinerHelper::applySPIRVFaceForward(), applyUDivByPow2(), applyUMulHToLShr(), applyUseVectorTruncate(), applyXorOfAndWithSameReg(), buildSDivOrSRemUsingMul(), buildUDivOrURemUsingMul(), canCombineFMadOrFMA(), CombinerHelper(), getRegBank(), matchAddEToAddO(), matchAddOfVScale(), matchAddOverflow(), matchAddSubSameReg(), matchAndOrDisjointMask(), matchAshrShlToSextInreg(), matchBinOpSameVal(), matchBitfieldExtractFromAnd(), matchBitfieldExtractFromSExtInReg(), matchBitfieldExtractFromShr(), matchBitfieldExtractFromShrAnd(), matchBuildVectorIdentityFold(), matchCanonicalizeFCmp(), matchCanonicalizeICmp(), matchCastOfBuildVector(), matchCastOfInteger(), matchCastOfSelect(), matchCombineAddP2IToPtrAdd(), matchCombineAnyExtTrunc(), matchCombineBuildUnmerge(), matchCombineConcatVectors(), matchCombineConstPtrAddToI2P(), matchCombineCopy(), matchCombineDivRem(), matchCombineExtendingLoads(), matchCombineExtractedVectorLoad(), matchCombineFAddFMAFMulToFMadOrFMA(), matchCombineFAddFMulToFMadOrFMA(), matchCombineFAddFpExtFMulToFMadOrFMA(), matchCombineFAddFpExtFMulToFMadOrFMAAggressive(), matchCombineFMinMaxNaN(), llvm::AMDGPUCombinerHelper::matchCombineFmulWithSelectToFldexp(), matchCombineFSubFMulToFMadOrFMA(), matchCombineFSubFNegFMulToFMadOrFMA(), matchCombineFSubFpExtFMulToFMadOrFMA(), matchCombineFSubFpExtFNegFMulToFMadOrFMA(), matchCombineI2PToP2I(), matchCombineInsertVecElts(), matchCombineLoadWithAndMask(), matchCombineMergeUnmerge(), matchCombineMulToShl(), matchCombineShiftToUnmerge(), matchCombineShlOfExtend(), matchCombineShuffleConcat(), matchCombineShuffleVector(), matchCombineSubToAdd(), matchCombineTruncOfShift(), matchCombineUnmergeConstant(), matchCombineUnmergeMergeToPlainValues(), matchCombineUnmergeUndef(), matchCombineUnmergeWithDeadLanesToTrunc(), matchCombineUnmergeZExtToZExt(), matchCombineZextTrunc(), matchCommuteConstantToRHS(), matchCommuteFPConstantToRHS(), matchCommuteShift(), matchConstantFoldBinOp(), matchConstantFoldCastOp(), matchConstantFoldFMA(), matchConstantFoldFPBinOp(), matchConstantFPOp(), llvm::AMDGPUCombinerHelper::matchConstantIs32BitMask(), matchConstantLargerBitWidth(), matchConstantOp(), matchConstantSelectCmp(), matchCtls(), matchDivByPow2(), matchEqualDefs(), llvm::AMDGPUCombinerHelper::matchExpandPromotedF16FMed3(), matchExtendThroughPhis(), matchExtOfExt(), matchExtractAllEltsFromBuildVector(), matchExtractVecEltBuildVec(), matchExtractVectorElement(), matchExtractVectorElementWithBuildVector(), matchExtractVectorElementWithBuildVectorTrunc(), matchExtractVectorElementWithDifferentIndices(), matchExtractVectorElementWithShuffleVector(), llvm::AMDGPUCombinerHelper::matchFoldableFneg(), matchFoldAMinusC1MinusC2(), matchFoldAMinusC1PlusC2(), matchFoldAPlusC1MinusC2(), matchFoldBinOpIntoSelect(), matchFoldC1Minus2MinusC2(), matchFoldC2MinusAPlusC1(), matchFreezeOfSingleMaybePoisonOperand(), matchFsubToFneg(), matchFunnelShiftToRotate(), matchHoistLogicOpWithSameOpcodeHands(), matchICmpToLHSKnownBits(), matchICmpToTrueFalseKnownBits(), matchInsertExtractVecEltOutOfBounds(), matchInsertVectorElementOOB(), llvm::SPIRVCombinerHelper::matchLengthToDistance(), matchLoadOrCombine(), matchLshrOfTruncOfLshr(), matchMergeXAndUndef(), matchMergeXAndZero(), matchMulOBy0(), matchMulOBy2(), matchMulOfVScale(), matchNarrowBinop(), matchNarrowBinopFeedingAnd(), matchNonNegZext(), matchNotCmp(), matchOperandIsKnownToBeAPowerOfTwo(), matchOperandIsUndef(), matchOrShiftToFunnelShift(), matchOverlappingAnd(), matchPtrAddImmedChain(), matchPtrAddZero(), matchReassocConstantInnerLHS(), matchReassocConstantInnerRHS(), matchReassocFoldConstantsInSubTree(), matchReassocPtrAdd(), matchRedundantAnd(), matchRedundantBinOpInEquality(), matchRedundantNegOperands(), matchRedundantOr(), matchRedundantSExtInReg(), matchRedundantSextInReg(), matchRepeatedFPDivisor(), matchRotateOutOfRange(), matchSDivOrSRemByConst(), matchSelectIMinMax(), matchSelectSameVal(), llvm::SPIRVCombinerHelper::matchSelectToFaceForward(), matchSextInRegOfLoad(), matchSextOfTrunc(), matchSextTruncSextLoad(), matchShiftImmedChain(), matchShiftOfShiftedLogic(), matchShiftsTooBig(), matchShlOfVScale(), matchShuffleDisjointMask(), matchShuffleUndefRHS(), matchSimplifyAddToSub(), matchSimplifyNegMinMax(), matchSimplifySelectToMinMax(), matchSubAddSameReg(), matchSuboCarryOut(), matchSubOfVScale(), matchTruncateOfExt(), matchTruncBuildVectorFold(), matchTruncLshrBuildVectorFold(), matchTruncSSatS(), matchTruncSSatU(), matchTruncUSatU(), matchTruncUSatUToFPTOUISat(), matchUDivOrURemByConst(), matchUMulHToLShr(), matchUndefSelectCmp(), matchUndefStore(), matchUnmergeValuesAnyExtBuildVector(), matchUseVectorTruncate(), matchXorOfAndWithSameReg(), matchZextOfTrunc(), replaceRegOpWith(), replaceRegWith(), replaceSingleDefInstWithOperand(), replaceSingleDefInstWithReg(), setRegBank(), and tryReassocBinOp().
◆ Observer
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Definition at line 118 of file CombinerHelper.h.
Referenced by llvm::AMDGPUCombinerHelper::AMDGPUCombinerHelper(), applyCombineExtendingLoads(), applyCombineMulToShl(), applyCommuteBinOpOperands(), applyFunnelShiftToRotate(), applyNotCmp(), applyOptBrCondByInvertingCond(), applyPtrAddImmedChain(), applyRotateOutOfRange(), applyShiftImmedChain(), applyXorOfAndWithSameReg(), CombinerHelper(), matchAddEToAddO(), matchAndOrDisjointMask(), matchCombineSubToAdd(), matchFreezeOfSingleMaybePoisonOperand(), matchMulOBy2(), matchNarrowBinopFeedingAnd(), matchReassocConstantInnerLHS(), matchReassocConstantInnerRHS(), matchReassocFoldConstantsInSubTree(), matchRedundantNegOperands(), matchRedundantSextInReg(), replaceOpcodeWith(), replaceRegOpWith(), replaceRegWith(), and llvm::SPIRVCombinerHelper::SPIRVCombinerHelper().
◆ RBI
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Definition at line 123 of file CombinerHelper.h.
Referenced by CombinerHelper(), and getRegBank().
◆ TRI
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Definition at line 124 of file CombinerHelper.h.
Referenced by CombinerHelper(), getRegBank(), and matchFreezeOfSingleMaybePoisonOperand().
◆ VT
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Definition at line 119 of file CombinerHelper.h.
Referenced by llvm::AMDGPUCombinerHelper::AMDGPUCombinerHelper(), buildUDivOrURemUsingMul(), CombinerHelper(), getValueTracking(), matchAddOverflow(), matchCombineShlOfExtend(), matchCombineTruncOfShift(), matchCombineZextTrunc(), matchICmpToLHSKnownBits(), matchICmpToTrueFalseKnownBits(), matchOperandIsKnownToBeAPowerOfTwo(), matchRedundantAnd(), matchRedundantOr(), matchRedundantSExtInReg(), matchShiftsTooBig(), matchSuboCarryOut(), and llvm::SPIRVCombinerHelper::SPIRVCombinerHelper().
The documentation for this class was generated from the following files:
- include/llvm/CodeGen/GlobalISel/CombinerHelper.h
- lib/CodeGen/GlobalISel/CombinerHelper.cpp
- lib/CodeGen/GlobalISel/CombinerHelperArtifacts.cpp
- lib/CodeGen/GlobalISel/CombinerHelperCasts.cpp
- lib/CodeGen/GlobalISel/CombinerHelperCompares.cpp
- lib/CodeGen/GlobalISel/CombinerHelperVectorOps.cpp
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