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 46