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 public: 32 explicit SystemZTTIImpl(const SystemZTargetMachine *TM, const Function &F) 33 : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)), 34 TLI(ST->getTargetLowering()) {} 35 36 /// \name Scalar TTI Implementations 37 /// @{ 38 39 unsigned getInliningThresholdMultiplier() { return 3; } 40 41 InstructionCost getIntImmCost(const APInt &Imm, Type *Ty, 42 TTI::TargetCostKind CostKind); 43 44 InstructionCost getIntImmCostInst(unsigned Opcode, unsigned Idx, 45 const APInt &Imm, Type *Ty, 46 TTI::TargetCostKind CostKind, 47 Instruction *Inst = nullptr); 48 InstructionCost getIntImmCostIntrin(Intrinsic::ID IID, unsigned Idx, 49 const APInt &Imm, Type *Ty, 50 TTI::TargetCostKind CostKind); 51 52 TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth); 53 54 void getUnrollingPreferences(Loop *L, ScalarEvolution &SE, 55 TTI::UnrollingPreferences &UP, 56 OptimizationRemarkEmitter *ORE); 57 58 void getPeelingPreferences(Loop *L, ScalarEvolution &SE, 59 TTI::PeelingPreferences &PP); 60 61 bool isLSRCostLess(TargetTransformInfo::LSRCost &C1, 62 TargetTransformInfo::LSRCost &C2); 63 /// @} 64 65 /// \name Vector TTI Implementations 66 /// @{ 67 68 unsigned getNumberOfRegisters(unsigned ClassID) const; 69 TypeSize getRegisterBitWidth(TargetTransformInfo::RegisterKind K) const; 70 71 unsigned getCacheLineSize() const override { return 256; } 72 unsigned getPrefetchDistance() const override { return 4500; } 73 unsigned getMinPrefetchStride(unsigned NumMemAccesses, 74 unsigned NumStridedMemAccesses, 75 unsigned NumPrefetches, 76 bool HasCall) const override; 77 bool enableWritePrefetching() const override { return true; } 78 79 bool hasDivRemOp(Type *DataType, bool IsSigned); 80 bool prefersVectorizedAddressing() { return false; } 81 bool LSRWithInstrQueries() { return true; } 82 bool supportsEfficientVectorElementLoadStore() { return true; } 83 bool enableInterleavedAccessVectorization() { return true; } 84 85 InstructionCost getArithmeticInstrCost( 86 unsigned Opcode, Type *Ty, TTI::TargetCostKind CostKind, 87 TTI::OperandValueKind Opd1Info = TTI::OK_AnyValue, 88 TTI::OperandValueKind Opd2Info = TTI::OK_AnyValue, 89 TTI::OperandValueProperties Opd1PropInfo = TTI::OP_None, 90 TTI::OperandValueProperties Opd2PropInfo = TTI::OP_None, 91 ArrayRef<const Value *> Args = ArrayRef<const Value *>(), 92 const Instruction *CxtI = nullptr); 93 InstructionCost getShuffleCost(TTI::ShuffleKind Kind, VectorType *Tp, 94 ArrayRef<int> Mask, int Index, 95 VectorType *SubTp); 96 unsigned getVectorTruncCost(Type *SrcTy, Type *DstTy); 97 unsigned getVectorBitmaskConversionCost(Type *SrcTy, Type *DstTy); 98 unsigned getBoolVecToIntConversionCost(unsigned Opcode, Type *Dst, 99 const Instruction *I); 100 InstructionCost getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src, 101 TTI::CastContextHint CCH, 102 TTI::TargetCostKind CostKind, 103 const Instruction *I = nullptr); 104 InstructionCost getCmpSelInstrCost(unsigned Opcode, Type *ValTy, Type *CondTy, 105 CmpInst::Predicate VecPred, 106 TTI::TargetCostKind CostKind, 107 const Instruction *I = nullptr); 108 InstructionCost getVectorInstrCost(unsigned Opcode, Type *Val, 109 unsigned Index); 110 bool isFoldableLoad(const LoadInst *Ld, const Instruction *&FoldedValue); 111 InstructionCost getMemoryOpCost(unsigned Opcode, Type *Src, 112 MaybeAlign Alignment, unsigned AddressSpace, 113 TTI::TargetCostKind CostKind, 114 const Instruction *I = nullptr); 115 116 InstructionCost getInterleavedMemoryOpCost( 117 unsigned Opcode, Type *VecTy, unsigned Factor, ArrayRef<unsigned> Indices, 118 Align Alignment, unsigned AddressSpace, TTI::TargetCostKind CostKind, 119 bool UseMaskForCond = false, bool UseMaskForGaps = false); 120 121 InstructionCost getIntrinsicInstrCost(const IntrinsicCostAttributes &ICA, 122 TTI::TargetCostKind CostKind); 123 /// @} 124 }; 125 126 } // end namespace llvm 127 128 #endif 129