#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. | |
| bool | matchCombineShuffleToBuildVector (MachineInstr &MI) const |
Replace MI with a build_vector. | |
| void | applyCombineShuffleToBuildVector (MachineInstr &MI) const |
| 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, const ArrayRef< Register > Ops) const |
Replace MI with a concat_vectors with Ops. | |
| bool | matchShuffleToExtract (MachineInstr &MI) const |
| void | applyShuffleToExtract (MachineInstr &MI) const |
| 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 | matchOperandIsZero (MachineInstr &MI, unsigned OpIdx) const |
Check if operand OpIdx is zero. | |
| 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, 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 | 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 |
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 4462 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 8055 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 4469 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 3330 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 2644 of file CombinerHelper.cpp.
References Builder, MI, MRI, and std::swap().
◆ 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 372 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 1762 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 2683 of file CombinerHelper.cpp.
References Builder, llvm::cast(), and MI.
◆ applyCombineCopy()
| void CombinerHelper::applyCombineCopy | ( | MachineInstr & | MI | ) | const |
Definition at line 237 of file CombinerHelper.cpp.
References MI, MRI, and replaceRegWith().
Referenced by tryCombineCopy().
◆ applyCombineDivRem()
| void CombinerHelper::applyCombineDivRem | ( | MachineInstr & | MI, |
| MachineInstr *& | OtherMI ) const |
Definition at line 1608 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 846 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 2603 of file CombinerHelper.cpp.
◆ applyCombineIndexedLoadStore()
| void CombinerHelper::applyCombineIndexedLoadStore | ( | MachineInstr & | MI, |
| IndexedLoadStoreMatchInfo & | MatchInfo ) const |
Definition at line 1510 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 3196 of file CombinerHelper.cpp.
References Builder, llvm::LLT::getScalarType(), MI, and MRI.
◆ applyCombineMulToShl()
| void CombinerHelper::applyCombineMulToShl | ( | MachineInstr & | MI, |
| unsigned & | ShiftVal ) const |
Definition at line 2172 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 2611 of file CombinerHelper.cpp.
◆ applyCombineShiftToUnmerge()
| void CombinerHelper::applyCombineShiftToUnmerge | ( | MachineInstr & | MI, |
| const unsigned & | ShiftVal ) const |
Definition at line 2510 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 2254 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 496 of file CombinerHelper.cpp.
References AbstractManglingParser< Derived, Alloc >::Ops, assert(), Builder, MI, and MRI.
◆ applyCombineShuffleToBuildVector()
| void CombinerHelper::applyCombineShuffleToBuildVector | ( | MachineInstr & | MI | ) | const |
Definition at line 407 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, |
| const ArrayRef< Register > | Ops ) const |
Replace MI with a concat_vectors with Ops.
Definition at line 607 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 2800 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 2374 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 2318 of file CombinerHelper.cpp.
References assert(), Builder, MI, MRI, Operands, and replaceRegWith().
◆ applyCombineUnmergeWithDeadLanesToTrunc()
| void CombinerHelper::applyCombineUnmergeWithDeadLanesToTrunc | ( | MachineInstr & | MI | ) | const |
Definition at line 2419 of file CombinerHelper.cpp.
◆ applyCombineUnmergeZExtToZExt()
| void CombinerHelper::applyCombineUnmergeZExtToZExt | ( | MachineInstr & | MI | ) | const |
Definition at line 2453 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 7162 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 8068 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 4310 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 4450 of file CombinerHelper.cpp.
References assert(), MI, MRI, and replaceRegWith().
◆ applyExtractVecEltBuildVec()
| void CombinerHelper::applyExtractVecEltBuildVec | ( | MachineInstr & | MI, |
| Register & | Reg ) const |
Definition at line 4391 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 6151 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 3038 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 2139 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 3704 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 1674 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 1851 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 3799 of file CombinerHelper.cpp.
References Builder, llvm::cast(), and MI.
◆ applyRepeatedFPDivisor()
| void CombinerHelper::applyRepeatedFPDivisor | ( | SmallVector< MachineInstr * > & | MatchInfo | ) | const |
Definition at line 6797 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 5881 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 5716 of file CombinerHelper.cpp.
References buildSDivOrSRemUsingMul(), MI, and replaceSingleDefInstWithReg().
◆ applySextInRegOfLoad()
| void CombinerHelper::applySextInRegOfLoad | ( | MachineInstr & | MI, |
| std::tuple< Register, unsigned > & | MatchInfo ) const |
Definition at line 1146 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 1088 of file CombinerHelper.cpp.
◆ applyShiftImmedChain()
| void CombinerHelper::applyShiftImmedChain | ( | MachineInstr & | MI, |
| RegisterImmPair & | MatchInfo ) const |
Definition at line 1910 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 2023 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.
◆ applyShuffleToExtract()
| void CombinerHelper::applyShuffleToExtract | ( | MachineInstr & | MI | ) | const |
◆ applySimplifyAddToSub()
| void CombinerHelper::applySimplifyAddToSub | ( | MachineInstr & | MI, |
| std::tuple< Register, Register > & | MatchInfo ) const |
Definition at line 3214 of file CombinerHelper.cpp.
◆ applySimplifyURemByPow2()
| void CombinerHelper::applySimplifyURemByPow2 | ( | MachineInstr & | MI | ) | const |
◆ applyTruncSSatS()
| void CombinerHelper::applyTruncSSatS | ( | MachineInstr & | MI, |
| Register & | MatchInfo ) const |
Definition at line 6015 of file CombinerHelper.cpp.
◆ applyTruncSSatU()
| void CombinerHelper::applyTruncSSatU | ( | MachineInstr & | MI, |
| Register & | MatchInfo ) const |
Definition at line 6047 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 5940 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 5663 of file CombinerHelper.cpp.
References buildUDivOrURemUsingMul(), MI, and replaceSingleDefInstWithReg().
◆ applyUMulHToLShr()
| void CombinerHelper::applyUMulHToLShr | ( | MachineInstr & | MI | ) | const |
Definition at line 5974 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 3600 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 5721 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 5446 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 6175 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 1049 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 2885 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 81 of file CombinerHelper.cpp.
References Builder.
◆ getDataLayout()
| const DataLayout & CombinerHelper::getDataLayout | ( | ) | const |
Definition at line 77 of file CombinerHelper.cpp.
References llvm::MachineFunction::getDataLayout(), and getMachineFunction().
◆ getMachineFunction()
| const MachineFunction & CombinerHelper::getMachineFunction | ( | ) | const |
Definition at line 73 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 213 of file CombinerHelper.cpp.
Referenced by matchPtrAddImmedChain().
◆ getTargetLowering()
| const TargetLowering & CombinerHelper::getTargetLowering | ( | ) | const |
Definition at line 69 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 170 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 155 of file CombinerHelper.cpp.
References assert(), llvm::LegalizeActions::Legal, and LI.
Referenced by isConstantLegalOrBeforeLegalizer(), isLegalOrBeforeLegalizer(), isLegalOrHasWidenScalar(), 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 160 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 165 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 1033 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 153 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 5368 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 7887 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 6816 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 2832 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 4670 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 2825 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 3344 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 3070 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 4736 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 4706 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 4773 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 4823 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 6832 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 2619 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 2692 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.
◆ 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 314 of file CombinerHelper.cpp.
References AbstractManglingParser< Derived, Alloc >::Ops, assert(), Builder, isLegalOrBeforeLegalizer(), MI, and MRI.
◆ matchCombineConstPtrAddToI2P()
| bool CombinerHelper::matchCombineConstPtrAddToI2P | ( | MachineInstr & | MI, |
| APInt & | NewCst ) const |
Definition at line 2662 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 230 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 1545 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 770 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 1388 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 6315 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 6206 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 6255 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 6381 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 6721 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 6508 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 6561 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 6609 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 6661 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 2593 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 1493 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 3149 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 951 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 2267 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 2160 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 2485 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 2214 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 436 of file CombinerHelper.cpp.
References AbstractManglingParser< Derived, Alloc >::Ops, llvm::dyn_cast(), llvm::LLT::getNumElements(), isLegalOrBeforeLegalizer(), MI, and MRI.
◆ matchCombineShuffleToBuildVector()
| bool CombinerHelper::matchCombineShuffleToBuildVector | ( | MachineInstr & | MI | ) | const |
Replace MI with a build_vector.
Definition at line 394 of file CombinerHelper.cpp.
References assert(), llvm::cast(), llvm::LLT::isVector(), 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 531 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 2186 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 2739 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 2349 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 2294 of file CombinerHelper.cpp.
References assert(), llvm::cast(), llvm::getOpcodeDef(), llvm::LLT::getSizeInBits(), MI, MRI, Operands, and peekThroughBitcast().
◆ 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 2389 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 2404 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 2427 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 2706 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 7123 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 7153 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 2062 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 5191 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 5178 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 5214 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 5202 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 2994 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 3024 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 2984 of file CombinerHelper.cpp.
References llvm::CallingConv::C, llvm::MachineOperand::getReg(), llvm::isConstantOrConstantSplatVector(), llvm::MachineOperand::isReg(), MI, and MRI.
Referenced by matchOperandIsZero().
◆ 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 2874 of file CombinerHelper.cpp.
References llvm::cast(), llvm::GSelect::getCondReg(), llvm::isConstantOrConstantSplatVector(), MI, MRI, and OpIdx.
◆ 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 5867 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 2887 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 4256 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 4408 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 4355 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 8158 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 8204 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 8112 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 3819 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 8181 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 8135 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 8062 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 244 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 6126 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 4529 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 3222 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 4626 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 4582 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 2857 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 4142 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, MRI, and Ptr.
◆ 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 2098 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 5349 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 5330 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 5239 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 3627 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 3090 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 3083 of file CombinerHelper.cpp.
References llvm::getOpcodeDef(), llvm::MachineOperand::getReg(), llvm::MachineOperand::isReg(), MI, MRI, and OpIdx.
◆ matchOperandIsZero()
| bool CombinerHelper::matchOperandIsZero | ( | MachineInstr & | MI, |
| unsigned | OpIdx ) const |
Check if operand OpIdx is zero.
Definition at line 3076 of file CombinerHelper.cpp.
References llvm::canReplaceReg(), matchConstantOp(), 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 1640 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, |
| BuildFnTy & | MatchInfo ) const |
Definition at line 4475 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 3374 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 1770 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 3780 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 5162 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 4990 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 4946 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 5042 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 5089 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 3401 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 7035 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 6080 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 3457 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 3499 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 6752 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 4553 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 5668 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 7613 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 7513 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::isPointer(), MRI, Select, and std::swap().
◆ matchSelectSameVal()
| bool CombinerHelper::matchSelectSameVal | ( | MachineInstr & | MI | ) | const |
Optimize (cond ? x : x) -> x.
Definition at line 3062 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 1094 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 1061 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 1865 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 1942 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 7103 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 8353 of file CombinerHelper.cpp.
References B(), llvm::cast(), commuteMask(), llvm::getOpcodeDef(), isLegalOrBeforeLegalizer(), MI, and MRI.
◆ matchShuffleToExtract()
| bool CombinerHelper::matchShuffleToExtract | ( | MachineInstr & | MI | ) | const |
Definition at line 622 of file CombinerHelper.cpp.
◆ matchShuffleUndefRHS()
| bool CombinerHelper::matchShuffleUndefRHS | ( | MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Remove references to rhs if it is undef.
Definition at line 8309 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 3129 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 7586 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 7020 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 5402 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 8405 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::GenericMachineInstr::getReg(), llvm::LLT::getScalarSizeInBits(), isLegalOrBeforeLegalizer(), and MRI.
◆ matchTruncBuildVectorFold()
| bool CombinerHelper::matchTruncBuildVectorFold | ( | MachineInstr & | MI, |
| Register & | MatchInfo ) const |
Definition at line 6878 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 6889 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 5990 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 6022 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 6054 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 6071 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 5614 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 5954 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 2851 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 2839 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 2845 of file CombinerHelper.cpp.
References assert(), llvm::getOpcodeDef(), MI, and MRI.
◆ matchUnmergeValuesAnyExtBuildVector()
| bool CombinerHelper::matchUnmergeValuesAnyExtBuildVector | ( | const MachineInstr & | MI, |
| BuildFnTy & | MatchInfo ) const |
Definition at line 8227 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 3530 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 3736 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 3110 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 3103 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 3116 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 3096 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 3123 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 204 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 193 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 181 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 3005 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 3015 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 217 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, Info, 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 223 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 743 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 1707 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 2582 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 522 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 1699 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 5121 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(), applyNotCmp(), applyOptBrCondByInvertingCond(), applyPtrAddZero(), applyRepeatedFPDivisor(), applyRotateOutOfRange(), applySDivByPow2(), applySextInRegOfLoad(), applySextTruncSextLoad(), applyShiftImmedChain(), applyShiftOfShiftedLogic(), applyShuffleToExtract(), applySimplifyAddToSub(), applySimplifyURemByPow2(), llvm::SPIRVCombinerHelper::applySPIRVDistance(), 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(), 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(), 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(), 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(), applyShuffleToExtract(), applySimplifyURemByPow2(), llvm::SPIRVCombinerHelper::applySPIRVDistance(), 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(), 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(), matchCombineShuffleToBuildVector(), matchCombineShuffleVector(), matchCombineSubToAdd(), matchCombineTruncOfShift(), matchCombineUnmergeConstant(), matchCombineUnmergeMergeToPlainValues(), matchCombineUnmergeUndef(), matchCombineUnmergeWithDeadLanesToTrunc(), matchCombineUnmergeZExtToZExt(), matchCombineZextTrunc(), matchCommuteConstantToRHS(), matchCommuteFPConstantToRHS(), matchCommuteShift(), matchConstantFoldBinOp(), matchConstantFoldCastOp(), matchConstantFoldFMA(), matchConstantFoldFPBinOp(), matchConstantFPOp(), llvm::AMDGPUCombinerHelper::matchConstantIs32BitMask(), matchConstantLargerBitWidth(), matchConstantOp(), matchConstantSelectCmp(), 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(), matchOperandIsZero(), matchOrShiftToFunnelShift(), matchOverlappingAnd(), matchPtrAddImmedChain(), matchPtrAddZero(), matchReassocConstantInnerLHS(), matchReassocConstantInnerRHS(), matchReassocFoldConstantsInSubTree(), matchReassocPtrAdd(), matchRedundantAnd(), matchRedundantBinOpInEquality(), matchRedundantNegOperands(), matchRedundantOr(), matchRedundantSExtInReg(), matchRedundantSextInReg(), matchRepeatedFPDivisor(), matchRotateOutOfRange(), matchSDivOrSRemByConst(), matchSelectIMinMax(), matchSelectSameVal(), 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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