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//===-- RISCVLegalizerInfo.h ------------------------------------*- 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 declares the targeting of the Machinelegalizer class for RISC-V.
/// \todo This should be generated by TableGen.
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_RISCV_RISCVMACHINELEGALIZER_H
#define LLVM_LIB_TARGET_RISCV_RISCVMACHINELEGALIZER_H
#include "llvm/CodeGen/GlobalISel/LegalizerInfo.h"
#include "llvm/CodeGen/Register.h"
namespace llvm {
class GISelChangeObserver;
class MachineIRBuilder;
class RISCVSubtarget;
class RISCVLegalizerInfo : public LegalizerInfo {
const RISCVSubtarget &STI;
const unsigned XLen;
const LLT sXLen;
public:
RISCVLegalizerInfo(const RISCVSubtarget &ST);
bool legalizeCustom(LegalizerHelper &Helper, MachineInstr &MI,
LostDebugLocObserver &LocObserver) const override;
bool legalizeIntrinsic(LegalizerHelper &Helper,
MachineInstr &MI) const override;
private:
bool shouldBeInConstantPool(APInt APImm, bool ShouldOptForSize) const;
bool legalizeShlAshrLshr(MachineInstr &MI, MachineIRBuilder &MIRBuilder,
GISelChangeObserver &Observer) const;
bool legalizeVAStart(MachineInstr &MI, MachineIRBuilder &MIRBuilder) const;
bool legalizeVScale(MachineInstr &MI, MachineIRBuilder &MIB) const;
};
} // end namespace llvm
#endif
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