1 //===-- SystemZTargetTransformInfo.h - SystemZ-specific TTI ---------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZTARGETTRANSFORMINFO_H 10 #define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZTARGETTRANSFORMINFO_H 11 12 #include "SystemZTargetMachine.h" 13 #include "llvm/Analysis/TargetTransformInfo.h" 14 #include "llvm/CodeGen/BasicTTIImpl.h" 15 16 namespace llvm { 17 18 class SystemZTTIImpl final : public BasicTTIImplBase<SystemZTTIImpl> { 19 typedef BasicTTIImplBase<SystemZTTIImpl> BaseT; 20 typedef TargetTransformInfo TTI; 21 friend BaseT; 22 23 const SystemZSubtarget *ST; 24 const SystemZTargetLowering *TLI; 25 getST()26 const SystemZSubtarget *getST() const { return ST; } getTLI()27 const SystemZTargetLowering *getTLI() const { return TLI; } 28 29 unsigned const LIBCALL_COST = 30; 30 isInt128InVR(Type * Ty)31 bool isInt128InVR(Type *Ty) const { 32 return Ty->isIntegerTy(128) && ST->hasVector(); 33 } 34 35 public: SystemZTTIImpl(const SystemZTargetMachine * TM,const Function & F)36 explicit SystemZTTIImpl(const SystemZTargetMachine *TM, const Function &F) 37 : BaseT(TM, F.getDataLayout()), ST(TM->getSubtargetImpl(F)), 38 TLI(ST->getTargetLowering()) {} 39 40 /// \name Scalar TTI Implementations 41 /// @{ 42 43 unsigned adjustInliningThreshold(const CallBase *CB) const override; 44 45 InstructionCost getIntImmCost(const APInt &Imm, Type *Ty, 46 TTI::TargetCostKind CostKind) const override; 47 48 InstructionCost getIntImmCostInst(unsigned Opcode, unsigned Idx, 49 const APInt &Imm, Type *Ty, 50 TTI::TargetCostKind CostKind, 51 Instruction *Inst = nullptr) const override; 52 InstructionCost 53 getIntImmCostIntrin(Intrinsic::ID IID, unsigned Idx, const APInt &Imm, 54 Type *Ty, TTI::TargetCostKind CostKind) const override; 55 56 TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth) const override; 57 58 void getUnrollingPreferences(Loop *L, ScalarEvolution &SE, 59 TTI::UnrollingPreferences &UP, 60 OptimizationRemarkEmitter *ORE) const override; 61 62 void getPeelingPreferences(Loop *L, ScalarEvolution &SE, 63 TTI::PeelingPreferences &PP) const override; 64 65 bool isLSRCostLess(const TargetTransformInfo::LSRCost &C1, 66 const TargetTransformInfo::LSRCost &C2) const override; 67 68 /// @} 69 70 /// \name Vector TTI Implementations 71 /// @{ 72 73 unsigned getNumberOfRegisters(unsigned ClassID) const override; 74 TypeSize 75 getRegisterBitWidth(TargetTransformInfo::RegisterKind K) const override; 76 getCacheLineSize()77 unsigned getCacheLineSize() const override { return 256; } getPrefetchDistance()78 unsigned getPrefetchDistance() const override { return 4500; } 79 unsigned getMinPrefetchStride(unsigned NumMemAccesses, 80 unsigned NumStridedMemAccesses, 81 unsigned NumPrefetches, 82 bool HasCall) const override; enableWritePrefetching()83 bool enableWritePrefetching() const override { return true; } 84 85 bool hasDivRemOp(Type *DataType, bool IsSigned) const override; prefersVectorizedAddressing()86 bool prefersVectorizedAddressing() const override { return false; } LSRWithInstrQueries()87 bool LSRWithInstrQueries() const override { return true; } 88 InstructionCost getScalarizationOverhead( 89 VectorType *Ty, const APInt &DemandedElts, bool Insert, bool Extract, 90 TTI::TargetCostKind CostKind, bool ForPoisonSrc = true, 91 ArrayRef<Value *> VL = {}) const override; supportsEfficientVectorElementLoadStore()92 bool supportsEfficientVectorElementLoadStore() const override { return true; } enableInterleavedAccessVectorization()93 bool enableInterleavedAccessVectorization() const override { return true; } 94 95 InstructionCost getArithmeticInstrCost( 96 unsigned Opcode, Type *Ty, TTI::TargetCostKind CostKind, 97 TTI::OperandValueInfo Op1Info = {TTI::OK_AnyValue, TTI::OP_None}, 98 TTI::OperandValueInfo Op2Info = {TTI::OK_AnyValue, TTI::OP_None}, 99 ArrayRef<const Value *> Args = {}, 100 const Instruction *CxtI = nullptr) const override; 101 InstructionCost 102 getShuffleCost(TTI::ShuffleKind Kind, VectorType *DstTy, VectorType *SrcTy, 103 ArrayRef<int> Mask, TTI::TargetCostKind CostKind, int Index, 104 VectorType *SubTp, ArrayRef<const Value *> Args = {}, 105 const Instruction *CxtI = nullptr) const override; 106 unsigned getVectorTruncCost(Type *SrcTy, Type *DstTy) const; 107 unsigned getVectorBitmaskConversionCost(Type *SrcTy, Type *DstTy) const; 108 unsigned getBoolVecToIntConversionCost(unsigned Opcode, Type *Dst, 109 const Instruction *I) const; 110 InstructionCost 111 getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src, 112 TTI::CastContextHint CCH, TTI::TargetCostKind CostKind, 113 const Instruction *I = nullptr) const override; 114 InstructionCost getCmpSelInstrCost( 115 unsigned Opcode, Type *ValTy, Type *CondTy, CmpInst::Predicate VecPred, 116 TTI::TargetCostKind CostKind, 117 TTI::OperandValueInfo Op1Info = {TTI::OK_AnyValue, TTI::OP_None}, 118 TTI::OperandValueInfo Op2Info = {TTI::OK_AnyValue, TTI::OP_None}, 119 const Instruction *I = nullptr) const override; 120 using BaseT::getVectorInstrCost; 121 InstructionCost getVectorInstrCost(unsigned Opcode, Type *Val, 122 TTI::TargetCostKind CostKind, 123 unsigned Index, const Value *Op0, 124 const Value *Op1) const override; 125 bool isFoldableLoad(const LoadInst *Ld, 126 const Instruction *&FoldedValue) const; 127 InstructionCost getMemoryOpCost( 128 unsigned Opcode, Type *Src, Align Alignment, unsigned AddressSpace, 129 TTI::TargetCostKind CostKind, 130 TTI::OperandValueInfo OpInfo = {TTI::OK_AnyValue, TTI::OP_None}, 131 const Instruction *I = nullptr) const override; 132 133 InstructionCost getInterleavedMemoryOpCost( 134 unsigned Opcode, Type *VecTy, unsigned Factor, ArrayRef<unsigned> Indices, 135 Align Alignment, unsigned AddressSpace, TTI::TargetCostKind CostKind, 136 bool UseMaskForCond = false, bool UseMaskForGaps = false) const override; 137 138 InstructionCost 139 getArithmeticReductionCost(unsigned Opcode, VectorType *Ty, 140 std::optional<FastMathFlags> FMF, 141 TTI::TargetCostKind CostKind) const override; 142 InstructionCost 143 getMinMaxReductionCost(Intrinsic::ID IID, VectorType *Ty, FastMathFlags FMF, 144 TTI::TargetCostKind CostKind) const override; 145 146 InstructionCost 147 getIntrinsicInstrCost(const IntrinsicCostAttributes &ICA, 148 TTI::TargetCostKind CostKind) const override; 149 150 bool shouldExpandReduction(const IntrinsicInst *II) const override; 151 /// @} 152 }; 153 154 } // end namespace llvm 155 156 #endif 157