| //===-- AVRRegisterInfo.h - AVR Register Information Impl -------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file contains the AVR implementation of the TargetRegisterInfo class. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_AVR_REGISTER_INFO_H |
| #define LLVM_AVR_REGISTER_INFO_H |
| |
| #include "llvm/CodeGen/TargetRegisterInfo.h" |
| |
| #define GET_REGINFO_HEADER |
| #include "AVRGenRegisterInfo.inc" |
| |
| namespace llvm { |
| |
| /// Utilities relating to AVR registers. |
| class AVRRegisterInfo : public AVRGenRegisterInfo { |
| public: |
| AVRRegisterInfo(); |
| |
| public: |
| const uint16_t * |
| getCalleeSavedRegs(const MachineFunction *MF = 0) const override; |
| const uint32_t *getCallPreservedMask(const MachineFunction &MF, |
| CallingConv::ID CC) const override; |
| BitVector getReservedRegs(const MachineFunction &MF) const override; |
| |
| const TargetRegisterClass * |
| getLargestLegalSuperClass(const TargetRegisterClass *RC, |
| const MachineFunction &MF) const override; |
| |
| /// Stack Frame Processing Methods |
| void eliminateFrameIndex(MachineBasicBlock::iterator MI, int SPAdj, |
| unsigned FIOperandNum, |
| RegScavenger *RS = NULL) const override; |
| |
| Register getFrameRegister(const MachineFunction &MF) const override; |
| |
| const TargetRegisterClass * |
| getPointerRegClass(const MachineFunction &MF, |
| unsigned Kind = 0) const override; |
| |
| /// Splits a 16-bit `DREGS` register into the lo/hi register pair. |
| /// \param Reg A 16-bit register to split. |
| void splitReg(Register Reg, Register &LoReg, Register &HiReg) const; |
| |
| bool shouldCoalesce(MachineInstr *MI, const TargetRegisterClass *SrcRC, |
| unsigned SubReg, const TargetRegisterClass *DstRC, |
| unsigned DstSubReg, const TargetRegisterClass *NewRC, |
| LiveIntervals &LIS) const override; |
| }; |
| |
| } // end namespace llvm |
| |
| #endif // LLVM_AVR_REGISTER_INFO_H |