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c121181edc
This patch migrates the TTI cost interfaces to return an InstructionCost. See this patch for the introduction of the type: https://reviews.llvm.org/D91174 See this thread for context: http://lists.llvm.org/pipermail/llvm-dev/2020-November/146408.html Reviewed By: dmgreen Differential Revision: https://reviews.llvm.org/D100203
62 lines
2.2 KiB
C++
62 lines
2.2 KiB
C++
//===------ BPFTargetTransformInfo.h - BPF specific TTI ---------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file uses the target's specific information to
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// provide more precise answers to certain TTI queries, while letting the
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// target independent and default TTI implementations handle the rest.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_BPF_BPFTARGETTRANSFORMINFO_H
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#define LLVM_LIB_TARGET_BPF_BPFTARGETTRANSFORMINFO_H
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#include "BPFTargetMachine.h"
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#include "llvm/Analysis/TargetTransformInfo.h"
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#include "llvm/CodeGen/BasicTTIImpl.h"
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#include "llvm/Transforms/Utils/ScalarEvolutionExpander.h"
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namespace llvm {
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class BPFTTIImpl : public BasicTTIImplBase<BPFTTIImpl> {
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typedef BasicTTIImplBase<BPFTTIImpl> BaseT;
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typedef TargetTransformInfo TTI;
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friend BaseT;
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const BPFSubtarget *ST;
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const BPFTargetLowering *TLI;
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const BPFSubtarget *getST() const { return ST; }
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const BPFTargetLowering *getTLI() const { return TLI; }
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public:
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explicit BPFTTIImpl(const BPFTargetMachine *TM, const Function &F)
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: BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)),
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TLI(ST->getTargetLowering()) {}
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int getIntImmCost(const APInt &Imm, Type *Ty, TTI::TargetCostKind CostKind) {
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if (Imm.getBitWidth() <= 64 && isInt<32>(Imm.getSExtValue()))
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return TTI::TCC_Free;
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return TTI::TCC_Basic;
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}
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InstructionCost getCmpSelInstrCost(unsigned Opcode, Type *ValTy, Type *CondTy,
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CmpInst::Predicate VecPred,
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TTI::TargetCostKind CostKind,
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const llvm::Instruction *I = nullptr) {
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if (Opcode == Instruction::Select)
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return SCEVCheapExpansionBudget.getValue();
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return BaseT::getCmpSelInstrCost(Opcode, ValTy, CondTy, VecPred, CostKind,
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I);
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}
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};
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} // end namespace llvm
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#endif // LLVM_LIB_TARGET_BPF_BPFTARGETTRANSFORMINFO_H
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