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 : 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 26 const SystemZSubtarget *getST() const { return ST; } 27 const SystemZTargetLowering *getTLI() const { return TLI; } 28 29 unsigned const LIBCALL_COST = 30; 30 31 bool isInt128InVR(Type *Ty) { return Ty->isIntegerTy(128) && ST->hasVector(); } 32 33 public: 34 explicit SystemZTTIImpl(const SystemZTargetMachine *TM, const Function &F) 35 : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)), 36 TLI(ST->getTargetLowering()) {} 37 38 /// \name Scalar TTI Implementations 39 /// @{ 40 41 unsigned getInliningThresholdMultiplier() const { return 3; } 42 unsigned adjustInliningThreshold(const CallBase *CB) const; 43 44 InstructionCost getIntImmCost(const APInt &Imm, Type *Ty, 45 TTI::TargetCostKind CostKind); 46 47 InstructionCost getIntImmCostInst(unsigned Opcode, unsigned Idx, 48 const APInt &Imm, Type *Ty, 49 TTI::TargetCostKind CostKind, 50 Instruction *Inst = nullptr); 51 InstructionCost getIntImmCostIntrin(Intrinsic::ID IID, unsigned Idx, 52 const APInt &Imm, Type *Ty, 53 TTI::TargetCostKind CostKind); 54 55 TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth); 56 57 void getUnrollingPreferences(Loop *L, ScalarEvolution &SE, 58 TTI::UnrollingPreferences &UP, 59 OptimizationRemarkEmitter *ORE); 60 61 void getPeelingPreferences(Loop *L, ScalarEvolution &SE, 62 TTI::PeelingPreferences &PP); 63 64 bool isLSRCostLess(const TargetTransformInfo::LSRCost &C1, 65 const TargetTransformInfo::LSRCost &C2); 66 /// @} 67 68 /// \name Vector TTI Implementations 69 /// @{ 70 71 unsigned getNumberOfRegisters(unsigned ClassID) const; 72 TypeSize getRegisterBitWidth(TargetTransformInfo::RegisterKind K) const; 73 74 unsigned getCacheLineSize() const override { return 256; } 75 unsigned getPrefetchDistance() const override { return 4500; } 76 unsigned getMinPrefetchStride(unsigned NumMemAccesses, 77 unsigned NumStridedMemAccesses, 78 unsigned NumPrefetches, 79 bool HasCall) const override; 80 bool enableWritePrefetching() const override { return true; } 81 82 bool hasDivRemOp(Type *DataType, bool IsSigned); 83 bool prefersVectorizedAddressing() { return false; } 84 bool LSRWithInstrQueries() { return true; } 85 bool supportsEfficientVectorElementLoadStore() { return true; } 86 bool enableInterleavedAccessVectorization() { return true; } 87 88 InstructionCost getArithmeticInstrCost( 89 unsigned Opcode, Type *Ty, TTI::TargetCostKind CostKind, 90 TTI::OperandValueInfo Op1Info = {TTI::OK_AnyValue, TTI::OP_None}, 91 TTI::OperandValueInfo Op2Info = {TTI::OK_AnyValue, TTI::OP_None}, 92 ArrayRef<const Value *> Args = ArrayRef<const Value *>(), 93 const Instruction *CxtI = nullptr); 94 InstructionCost getShuffleCost(TTI::ShuffleKind Kind, VectorType *Tp, 95 ArrayRef<int> Mask, 96 TTI::TargetCostKind CostKind, int Index, 97 VectorType *SubTp, 98 ArrayRef<const Value *> Args = std::nullopt); 99 unsigned getVectorTruncCost(Type *SrcTy, Type *DstTy); 100 unsigned getVectorBitmaskConversionCost(Type *SrcTy, Type *DstTy); 101 unsigned getBoolVecToIntConversionCost(unsigned Opcode, Type *Dst, 102 const Instruction *I); 103 InstructionCost getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src, 104 TTI::CastContextHint CCH, 105 TTI::TargetCostKind CostKind, 106 const Instruction *I = nullptr); 107 InstructionCost getCmpSelInstrCost(unsigned Opcode, Type *ValTy, Type *CondTy, 108 CmpInst::Predicate VecPred, 109 TTI::TargetCostKind CostKind, 110 const Instruction *I = nullptr); 111 using BaseT::getVectorInstrCost; 112 InstructionCost getVectorInstrCost(unsigned Opcode, Type *Val, 113 TTI::TargetCostKind CostKind, 114 unsigned Index, Value *Op0, Value *Op1); 115 bool isFoldableLoad(const LoadInst *Ld, const Instruction *&FoldedValue); 116 InstructionCost 117 getMemoryOpCost(unsigned Opcode, Type *Src, MaybeAlign Alignment, 118 unsigned AddressSpace, TTI::TargetCostKind CostKind, 119 TTI::OperandValueInfo OpInfo = {TTI::OK_AnyValue, TTI::OP_None}, 120 const Instruction *I = nullptr); 121 122 InstructionCost getInterleavedMemoryOpCost( 123 unsigned Opcode, Type *VecTy, unsigned Factor, ArrayRef<unsigned> Indices, 124 Align Alignment, unsigned AddressSpace, TTI::TargetCostKind CostKind, 125 bool UseMaskForCond = false, bool UseMaskForGaps = false); 126 127 InstructionCost getIntrinsicInstrCost(const IntrinsicCostAttributes &ICA, 128 TTI::TargetCostKind CostKind); 129 /// @} 130 }; 131 132 } // end namespace llvm 133 134 #endif 135