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/LegalizerHelper.h" 17 #include "llvm/CodeGen/GlobalISel/LegalizerInfo.h" 18 #include "llvm/CodeGen/Register.h" 19 20 namespace llvm { 21 22 class GISelChangeObserver; 23 class MachineIRBuilder; 24 class RISCVSubtarget; 25 26 class RISCVLegalizerInfo : public LegalizerInfo { 27 const RISCVSubtarget &STI; 28 const unsigned XLen; 29 const LLT sXLen; 30 31 public: 32 RISCVLegalizerInfo(const RISCVSubtarget &ST); 33 34 bool legalizeCustom(LegalizerHelper &Helper, MachineInstr &MI, 35 LostDebugLocObserver &LocObserver) const override; 36 37 bool legalizeIntrinsic(LegalizerHelper &Helper, 38 MachineInstr &MI) const override; 39 40 private: 41 bool shouldBeInConstantPool(const APInt &APImm, bool ShouldOptForSize) const; 42 bool legalizeShlAshrLshr(MachineInstr &MI, MachineIRBuilder &MIRBuilder, 43 GISelChangeObserver &Observer) const; 44 45 bool legalizeBRJT(MachineInstr &MI, MachineIRBuilder &MIRBuilder) const; 46 bool legalizeVAStart(MachineInstr &MI, MachineIRBuilder &MIRBuilder) const; 47 bool legalizeVScale(MachineInstr &MI, MachineIRBuilder &MIB) const; 48 bool legalizeExt(MachineInstr &MI, MachineIRBuilder &MIRBuilder) const; 49 bool legalizeSplatVector(MachineInstr &MI, MachineIRBuilder &MIB) const; 50 bool legalizeExtractSubvector(MachineInstr &MI, MachineIRBuilder &MIB) const; 51 bool legalizeInsertSubvector(MachineInstr &MI, LegalizerHelper &Helper, 52 MachineIRBuilder &MIB) const; 53 bool legalizeLoadStore(MachineInstr &MI, LegalizerHelper &Helper, 54 MachineIRBuilder &MIB) const; 55 }; 56 } // end namespace llvm 57 #endif 58