lib/Target/PowerPC/PPCTargetTransformInfo.h

   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
  34   const PPCSubtarget *getST() const { return ST; }
  35   const PPCTargetLowering *getTLI() const { return TLI; }
  36   bool mightUseCTR(BasicBlock *BB, TargetLibraryInfo *LibInfo);
  37
  38 public:
  39   explicit PPCTTIImpl(const PPCTargetMachine *TM, const Function &F)
  40       : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)),
  41         TLI(ST->getTargetLowering()) {}
  42
  43   /// \name Scalar TTI Implementations
  44   /// @{
  45
  46   using BaseT::getIntImmCost;
  47   int getIntImmCost(const APInt &Imm, Type *Ty);
  48
  49   int getIntImmCost(unsigned Opcode, unsigned Idx, const APInt &Imm, Type *Ty);
  50   int getIntImmCost(Intrinsic::ID IID, unsigned Idx, const APInt &Imm,
  51                     Type *Ty);
  52
  53   unsigned getUserCost(const User *U, ArrayRef<const Value *> Operands);
  54
  55   TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth);
  56   bool isHardwareLoopProfitable(Loop *L, ScalarEvolution &SE,
  57                                 AssumptionCache &AC,
  58                                 TargetLibraryInfo *LibInfo,
  59                                 HardwareLoopInfo &HWLoopInfo);
  60   bool canSaveCmp(Loop *L, BranchInst **BI, ScalarEvolution *SE, LoopInfo *LI,
  61                   DominatorTree *DT, AssumptionCache *AC,
  62                   TargetLibraryInfo *LibInfo);
  63   void getUnrollingPreferences(Loop *L, ScalarEvolution &SE,
  64                                TTI::UnrollingPreferences &UP);
  65
  66   /// @}
  67
  68   /// \name Vector TTI Implementations
  69   /// @{
  70   bool useColdCCForColdCall(Function &F);
  71   bool enableAggressiveInterleaving(bool LoopHasReductions);
  72   TTI::MemCmpExpansionOptions enableMemCmpExpansion(bool OptSize,
  73                                                     bool IsZeroCmp) const;
  74   bool enableInterleavedAccessVectorization();
  75   unsigned getNumberOfRegisters(bool Vector);
  76   unsigned getRegisterBitWidth(bool Vector) const;
  77   unsigned getCacheLineSize();
  78   unsigned getPrefetchDistance();
  79   unsigned getMaxInterleaveFactor(unsigned VF);
  80   int vectorCostAdjustment(int Cost, unsigned Opcode, Type *Ty1, Type *Ty2);
  81   int getArithmeticInstrCost(
  82       unsigned Opcode, Type *Ty,
  83       TTI::OperandValueKind Opd1Info = TTI::OK_AnyValue,
  84       TTI::OperandValueKind Opd2Info = TTI::OK_AnyValue,
  85       TTI::OperandValueProperties Opd1PropInfo = TTI::OP_None,
  86       TTI::OperandValueProperties Opd2PropInfo = TTI::OP_None,
  87       ArrayRef<const Value *> Args = ArrayRef<const Value *>());
  88   int getShuffleCost(TTI::ShuffleKind Kind, Type *Tp, int Index, Type *SubTp);
  89   int getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src,
  90                        const Instruction *I = nullptr);
  91   int getCmpSelInstrCost(unsigned Opcode, Type *ValTy, Type *CondTy,
  92                          const Instruction *I = nullptr);
  93   int getVectorInstrCost(unsigned Opcode, Type *Val, unsigned Index);
  94   int getMemoryOpCost(unsigned Opcode, Type *Src, unsigned Alignment,
  95                       unsigned AddressSpace, const Instruction *I = nullptr);
  96   int getInterleavedMemoryOpCost(unsigned Opcode, Type *VecTy,
  97                                  unsigned Factor,
  98                                  ArrayRef<unsigned> Indices,
  99                                  unsigned Alignment,
 100                                  unsigned AddressSpace,
 101                                  bool UseMaskForCond = false,
 102                                  bool UseMaskForGaps = false);
 103
 104   /// @}
 105 };
 106
 107 } // end namespace llvm
 108
 109 #endif