llvm/lib/Target/RISCV/GISel/RISCVLegalizerInfo.h

   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
  18 namespace llvm {
  19
  20 class GISelChangeObserver;
  21 class MachineIRBuilder;
  22 class RISCVSubtarget;
  23
  24 class RISCVLegalizerInfo : public LegalizerInfo {
  25   const RISCVSubtarget &STI;
  26   const unsigned XLen;
  27   const LLT sXLen;
  28
  29 public:
  30   RISCVLegalizerInfo(const RISCVSubtarget &ST);
  31
  32   bool legalizeCustom(LegalizerHelper &Helper, MachineInstr &MI,
  33                       LostDebugLocObserver &LocObserver) const override;
  34
  35   bool legalizeIntrinsic(LegalizerHelper &Helper,
  36                          MachineInstr &MI) const override;
  37
  38 private:
  39   bool legalizeShlAshrLshr(MachineInstr &MI, MachineIRBuilder &MIRBuilder,
  40                            GISelChangeObserver &Observer) const;
  41
  42   bool legalizeVAStart(MachineInstr &MI, MachineIRBuilder &MIRBuilder) const;
  43 };
  44 } // end namespace llvm
  45 #endif