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1//===-- AVRRegisterInfo.h - AVR 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-exception6//7//===----------------------------------------------------------------------===//8//9// This file contains the AVR implementation of the TargetRegisterInfo class.10//11//===----------------------------------------------------------------------===//12 13#ifndef LLVM_AVR_REGISTER_INFO_H14#define LLVM_AVR_REGISTER_INFO_H15 16#include "llvm/CodeGen/TargetRegisterInfo.h"17 18#define GET_REGINFO_HEADER19#include "AVRGenRegisterInfo.inc"20 21namespace llvm {22 23/// Utilities relating to AVR registers.24class AVRRegisterInfo : public AVRGenRegisterInfo {25public:26 AVRRegisterInfo();27 28public:29 const uint16_t *30 getCalleeSavedRegs(const MachineFunction *MF = nullptr) const override;31 const uint32_t *getCallPreservedMask(const MachineFunction &MF,32 CallingConv::ID CC) const override;33 BitVector getReservedRegs(const MachineFunction &MF) const override;34 35 const TargetRegisterClass *36 getLargestLegalSuperClass(const TargetRegisterClass *RC,37 const MachineFunction &MF) const override;38 39 /// Stack Frame Processing Methods40 bool 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 const TargetRegisterClass *47 getPointerRegClass(unsigned Kind = 0) const override;48 49 /// Splits a 16-bit `DREGS` register into the lo/hi register pair.50 /// \param Reg A 16-bit register to split.51 void splitReg(Register Reg, Register &LoReg, Register &HiReg) const;52 53 bool shouldCoalesce(MachineInstr *MI, const TargetRegisterClass *SrcRC,54 unsigned SubReg, const TargetRegisterClass *DstRC,55 unsigned DstSubReg, const TargetRegisterClass *NewRC,56 LiveIntervals &LIS) const override;57};58 59} // end namespace llvm60 61#endif // LLVM_AVR_REGISTER_INFO_H62