| //===------ BPFTargetTransformInfo.h - BPF specific TTI ---------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file uses the target's specific information to |
| // provide more precise answers to certain TTI queries, while letting the |
| // target independent and default TTI implementations handle the rest. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIB_TARGET_BPF_BPFTARGETTRANSFORMINFO_H |
| #define LLVM_LIB_TARGET_BPF_BPFTARGETTRANSFORMINFO_H |
| |
| #include "BPFTargetMachine.h" |
| #include "llvm/Analysis/TargetTransformInfo.h" |
| #include "llvm/CodeGen/BasicTTIImpl.h" |
| #include "llvm/Transforms/Utils/ScalarEvolutionExpander.h" |
| |
| namespace llvm { |
| class BPFTTIImpl : public BasicTTIImplBase<BPFTTIImpl> { |
| typedef BasicTTIImplBase<BPFTTIImpl> BaseT; |
| typedef TargetTransformInfo TTI; |
| friend BaseT; |
| |
| const BPFSubtarget *ST; |
| const BPFTargetLowering *TLI; |
| |
| const BPFSubtarget *getST() const { return ST; } |
| const BPFTargetLowering *getTLI() const { return TLI; } |
| |
| public: |
| explicit BPFTTIImpl(const BPFTargetMachine *TM, const Function &F) |
| : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)), |
| TLI(ST->getTargetLowering()) {} |
| |
| int getIntImmCost(const APInt &Imm, Type *Ty, TTI::TargetCostKind CostKind) { |
| if (Imm.getBitWidth() <= 64 && isInt<32>(Imm.getSExtValue())) |
| return TTI::TCC_Free; |
| |
| return TTI::TCC_Basic; |
| } |
| |
| int getCmpSelInstrCost(unsigned Opcode, Type *ValTy, Type *CondTy, |
| CmpInst::Predicate VecPred, |
| TTI::TargetCostKind CostKind, |
| const llvm::Instruction *I = nullptr) { |
| if (Opcode == Instruction::Select) |
| return SCEVCheapExpansionBudget; |
| |
| return BaseT::getCmpSelInstrCost(Opcode, ValTy, CondTy, VecPred, CostKind, |
| I); |
| } |
| }; |
| |
| } // end namespace llvm |
| |
| #endif // LLVM_LIB_TARGET_BPF_BPFTARGETTRANSFORMINFO_H |