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 19 namespace llvm { 20 21 class GISelChangeObserver; 22 class MachineIRBuilder; 23 class RISCVSubtarget; 24 25 class RISCVLegalizerInfo : public LegalizerInfo { 26 const RISCVSubtarget &STI; 27 const unsigned XLen; 28 const LLT sXLen; 29 30 public: 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 39 private: 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