4087b871c5
Instead of custom selecting a bunch of instructions, we can expand to generic MIR during legalization.
58 lines
2.3 KiB
C++
58 lines
2.3 KiB
C++
//===-- RISCVLegalizerInfo.h ------------------------------------*- 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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/// \file
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/// This file declares the targeting of the Machinelegalizer class for RISC-V.
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/// \todo This should be generated by TableGen.
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_RISCV_RISCVMACHINELEGALIZER_H
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#define LLVM_LIB_TARGET_RISCV_RISCVMACHINELEGALIZER_H
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#include "llvm/CodeGen/GlobalISel/LegalizerHelper.h"
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#include "llvm/CodeGen/GlobalISel/LegalizerInfo.h"
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#include "llvm/CodeGen/Register.h"
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namespace llvm {
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class GISelChangeObserver;
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class MachineIRBuilder;
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class RISCVSubtarget;
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class RISCVLegalizerInfo : public LegalizerInfo {
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const RISCVSubtarget &STI;
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const unsigned XLen;
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const LLT sXLen;
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public:
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RISCVLegalizerInfo(const RISCVSubtarget &ST);
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bool legalizeCustom(LegalizerHelper &Helper, MachineInstr &MI,
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LostDebugLocObserver &LocObserver) const override;
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bool legalizeIntrinsic(LegalizerHelper &Helper,
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MachineInstr &MI) const override;
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private:
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bool shouldBeInConstantPool(const APInt &APImm, bool ShouldOptForSize) const;
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bool legalizeShlAshrLshr(MachineInstr &MI, MachineIRBuilder &MIRBuilder,
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GISelChangeObserver &Observer) const;
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bool legalizeBRJT(MachineInstr &MI, MachineIRBuilder &MIRBuilder) const;
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bool legalizeVAStart(MachineInstr &MI, MachineIRBuilder &MIRBuilder) const;
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bool legalizeVScale(MachineInstr &MI, MachineIRBuilder &MIB) const;
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bool legalizeExt(MachineInstr &MI, MachineIRBuilder &MIRBuilder) const;
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bool legalizeSplatVector(MachineInstr &MI, MachineIRBuilder &MIB) const;
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bool legalizeExtractSubvector(MachineInstr &MI, MachineIRBuilder &MIB) const;
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bool legalizeInsertSubvector(MachineInstr &MI, LegalizerHelper &Helper,
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MachineIRBuilder &MIB) const;
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bool legalizeLoadStore(MachineInstr &MI, LegalizerHelper &Helper,
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MachineIRBuilder &MIB) const;
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};
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} // end namespace llvm
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#endif
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