================ @@ -0,0 +1,56 @@ +//===- AVRTargetTransformInfo.h - AVR 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 +// +//===----------------------------------------------------------------------===// +/// \file +/// This file defines a TargetTransformInfoImplBase conforming object specific +/// to the AVR target machine. It uses the target's detailed 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_AVR_AVRTARGETTRANSFORMINFO_H +#define LLVM_LIB_TARGET_AVR_AVRTARGETTRANSFORMINFO_H + +#include "AVRSubtarget.h" +#include "AVRTargetMachine.h" +#include "llvm/Analysis/TargetTransformInfo.h" +#include "llvm/CodeGen/BasicTTIImpl.h" +#include "llvm/IR/Function.h" +#include <optional> + +namespace llvm { + +class AVRTTIImpl final : public BasicTTIImplBase<AVRTTIImpl> { + using BaseT = BasicTTIImplBase<AVRTTIImpl>; + using TTI = TargetTransformInfo; + + friend BaseT; + + const AVRSubtarget *ST; + const AVRTargetLowering *TLI; + + const AVRSubtarget *getST() const { return ST; } + const AVRTargetLowering *getTLI() const { return TLI; } + +public: + explicit AVRTTIImpl(const AVRTargetMachine *TM, const Function &F) + : BaseT(TM, F.getDataLayout()), ST(TM->getSubtargetImpl(F)), + TLI(ST->getTargetLowering()) {} + + bool isLSRCostLess(const TargetTransformInfo::LSRCost &C1, + const TargetTransformInfo::LSRCost &C2) const override { + if (C2.Insns == ~0u) ---------------- Patryk27 wrote:
Out of curiosity, what does this bit do? I see that e.g. x86 and RISC-V don't use this 👀 https://github.com/llvm/llvm-project/pull/152028 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
