1 //===-- RISCVRegisterInfo.h - RISCV Register Information Impl ---*- 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 // 9 // This file contains the RISCV implementation of the TargetRegisterInfo class. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_LIB_TARGET_RISCV_RISCVREGISTERINFO_H 14 #define LLVM_LIB_TARGET_RISCV_RISCVREGISTERINFO_H 15 16 #include "llvm/CodeGen/TargetRegisterInfo.h" 17 18 #define GET_REGINFO_HEADER 19 #include "RISCVGenRegisterInfo.inc" 20 21 namespace llvm { 22 23 struct RISCVRegisterInfo : public RISCVGenRegisterInfo { 24 25 RISCVRegisterInfo(unsigned HwMode); 26 27 const uint32_t *getCallPreservedMask(const MachineFunction &MF, 28 CallingConv::ID) const override; 29 30 const MCPhysReg *getCalleeSavedRegs(const MachineFunction *MF) const override; 31 32 BitVector getReservedRegs(const MachineFunction &MF) const override; 33 bool isAsmClobberable(const MachineFunction &MF, 34 unsigned PhysReg) const override; 35 36 bool isConstantPhysReg(unsigned PhysReg) const override; 37 38 const uint32_t *getNoPreservedMask() const override; 39 40 void eliminateFrameIndex(MachineBasicBlock::iterator MI, int SPAdj, 41 unsigned FIOperandNum, 42 RegScavenger *RS = nullptr) const override; 43 44 Register getFrameRegister(const MachineFunction &MF) const override; 45 46 bool requiresRegisterScavenging(const MachineFunction &MF) const override { 47 return true; 48 } 49 50 bool requiresFrameIndexScavenging(const MachineFunction &MF) const override { 51 return true; 52 } 53 54 bool trackLivenessAfterRegAlloc(const MachineFunction &) const override { 55 return true; 56 } 57 58 const TargetRegisterClass * 59 getPointerRegClass(const MachineFunction &MF, 60 unsigned Kind = 0) const override { 61 return &RISCV::GPRRegClass; 62 } 63 }; 64 } 65 66 #endif 67