1 //===-- PPCTargetTransformInfo.h - PPC specific TTI -------------*- C++ -*-===// 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 /// \file 9 /// This file a TargetTransformInfo::Concept conforming object specific to the 10 /// PPC target machine. It uses the target's detailed information to 11 /// provide more precise answers to certain TTI queries, while letting the 12 /// target independent and default TTI implementations handle the rest. 13 /// 14 //===----------------------------------------------------------------------===// 15 16 #ifndef LLVM_LIB_TARGET_POWERPC_PPCTARGETTRANSFORMINFO_H 17 #define LLVM_LIB_TARGET_POWERPC_PPCTARGETTRANSFORMINFO_H 18 19 #include "PPCTargetMachine.h" 20 #include "llvm/Analysis/TargetTransformInfo.h" 21 #include "llvm/CodeGen/BasicTTIImpl.h" 22 #include "llvm/CodeGen/TargetLowering.h" 23 24 namespace llvm { 25 26 class PPCTTIImpl : public BasicTTIImplBase<PPCTTIImpl> { 27 typedef BasicTTIImplBase<PPCTTIImpl> BaseT; 28 typedef TargetTransformInfo TTI; 29 friend BaseT; 30 31 const PPCSubtarget *ST; 32 const PPCTargetLowering *TLI; 33 getST()34 const PPCSubtarget *getST() const { return ST; } getTLI()35 const PPCTargetLowering *getTLI() const { return TLI; } 36 bool mightUseCTR(BasicBlock *BB, TargetLibraryInfo *LibInfo, 37 SmallPtrSetImpl<const Value *> &Visited); 38 39 public: PPCTTIImpl(const PPCTargetMachine * TM,const Function & F)40 explicit PPCTTIImpl(const PPCTargetMachine *TM, const Function &F) 41 : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)), 42 TLI(ST->getTargetLowering()) {} 43 44 /// \name Scalar TTI Implementations 45 /// @{ 46 47 using BaseT::getIntImmCost; 48 int getIntImmCost(const APInt &Imm, Type *Ty); 49 50 int getIntImmCostInst(unsigned Opcode, unsigned Idx, const APInt &Imm, 51 Type *Ty); 52 int getIntImmCostIntrin(Intrinsic::ID IID, unsigned Idx, const APInt &Imm, 53 Type *Ty); 54 55 unsigned getUserCost(const User *U, ArrayRef<const Value *> Operands); 56 57 TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth); 58 bool isHardwareLoopProfitable(Loop *L, ScalarEvolution &SE, 59 AssumptionCache &AC, 60 TargetLibraryInfo *LibInfo, 61 HardwareLoopInfo &HWLoopInfo); 62 bool canSaveCmp(Loop *L, BranchInst **BI, ScalarEvolution *SE, LoopInfo *LI, 63 DominatorTree *DT, AssumptionCache *AC, 64 TargetLibraryInfo *LibInfo); 65 void getUnrollingPreferences(Loop *L, ScalarEvolution &SE, 66 TTI::UnrollingPreferences &UP); 67 68 /// @} 69 70 /// \name Vector TTI Implementations 71 /// @{ 72 bool useColdCCForColdCall(Function &F); 73 bool enableAggressiveInterleaving(bool LoopHasReductions); 74 TTI::MemCmpExpansionOptions enableMemCmpExpansion(bool OptSize, 75 bool IsZeroCmp) const; 76 bool enableInterleavedAccessVectorization(); 77 78 enum PPCRegisterClass { 79 GPRRC, FPRRC, VRRC, VSXRC 80 }; 81 unsigned getNumberOfRegisters(unsigned ClassID) const; 82 unsigned getRegisterClassForType(bool Vector, Type *Ty = nullptr) const; 83 const char* getRegisterClassName(unsigned ClassID) const; 84 unsigned getRegisterBitWidth(bool Vector) const; 85 unsigned getCacheLineSize() const override; 86 unsigned getPrefetchDistance() const override; 87 unsigned getMaxInterleaveFactor(unsigned VF); 88 int vectorCostAdjustment(int Cost, unsigned Opcode, Type *Ty1, Type *Ty2); 89 int getArithmeticInstrCost( 90 unsigned Opcode, Type *Ty, 91 TTI::OperandValueKind Opd1Info = TTI::OK_AnyValue, 92 TTI::OperandValueKind Opd2Info = TTI::OK_AnyValue, 93 TTI::OperandValueProperties Opd1PropInfo = TTI::OP_None, 94 TTI::OperandValueProperties Opd2PropInfo = TTI::OP_None, 95 ArrayRef<const Value *> Args = ArrayRef<const Value *>(), 96 const Instruction *CxtI = nullptr); 97 int getShuffleCost(TTI::ShuffleKind Kind, Type *Tp, int Index, Type *SubTp); 98 int getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src, 99 const Instruction *I = nullptr); 100 int getCmpSelInstrCost(unsigned Opcode, Type *ValTy, Type *CondTy, 101 const Instruction *I = nullptr); 102 int getVectorInstrCost(unsigned Opcode, Type *Val, unsigned Index); 103 int getMemoryOpCost(unsigned Opcode, Type *Src, MaybeAlign Alignment, 104 unsigned AddressSpace, const Instruction *I = nullptr); 105 int getInterleavedMemoryOpCost(unsigned Opcode, Type *VecTy, 106 unsigned Factor, 107 ArrayRef<unsigned> Indices, 108 unsigned Alignment, 109 unsigned AddressSpace, 110 bool UseMaskForCond = false, 111 bool UseMaskForGaps = false); 112 unsigned getIntrinsicInstrCost(Intrinsic::ID ID, Type *RetTy, 113 ArrayRef<Value*> Args, FastMathFlags FMF, unsigned VF); 114 unsigned getIntrinsicInstrCost(Intrinsic::ID ID, Type *RetTy, 115 ArrayRef<Type*> Tys, FastMathFlags FMF, 116 unsigned ScalarizationCostPassed = UINT_MAX); 117 118 /// @} 119 }; 120 121 } // end namespace llvm 122 123 #endif 124