1//===-- RISCVLegalizerInfo.h ------------------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8/// \file
9/// This file declares the targeting of the Machinelegalizer class for RISC-V.
10/// \todo This should be generated by TableGen.
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_RISCV_RISCVMACHINELEGALIZER_H
14#define LLVM_LIB_TARGET_RISCV_RISCVMACHINELEGALIZER_H
15
16#include "llvm/CodeGen/GlobalISel/LegalizerInfo.h"
17#include "llvm/CodeGen/Register.h"
18
19namespace llvm {
20
21class GISelChangeObserver;
22class MachineIRBuilder;
23class RISCVSubtarget;
24
25class RISCVLegalizerInfo : public LegalizerInfo {
26 const RISCVSubtarget &STI;
27 const unsigned XLen;
28 const LLT sXLen;
29
30public:
31 RISCVLegalizerInfo(const RISCVSubtarget &ST);
32
33 bool legalizeCustom(LegalizerHelper &Helper, MachineInstr &MI,
34 LostDebugLocObserver &LocObserver) const override;
35
36 bool legalizeIntrinsic(LegalizerHelper &Helper,
37 MachineInstr &MI) const override;
38
39private:
40 bool shouldBeInConstantPool(APInt APImm, bool ShouldOptForSize) const;
41 bool legalizeShlAshrLshr(MachineInstr &MI, MachineIRBuilder &MIRBuilder,
42 GISelChangeObserver &Observer) const;
43
44 bool legalizeVAStart(MachineInstr &MI, MachineIRBuilder &MIRBuilder) const;
45 bool legalizeVScale(MachineInstr &MI, MachineIRBuilder &MIB) const;
46 bool legalizeExt(MachineInstr &MI, MachineIRBuilder &MIRBuilder) const;
47 bool legalizeSplatVector(MachineInstr &MI, MachineIRBuilder &MIB) const;
48};
49} // end namespace llvm
50#endif
51