| 1 | //===-- AVRRegisterInfo.h - AVR Register Information Impl -------*- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // This file contains the AVR implementation of the TargetRegisterInfo class. |
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| 10 | // |
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| 11 | //===----------------------------------------------------------------------===// |
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| 12 | |
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| 13 | #ifndef LLVM_AVR_REGISTER_INFO_H |
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| 14 | #define LLVM_AVR_REGISTER_INFO_H |
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| 15 | |
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| 16 | #include "llvm/CodeGen/TargetRegisterInfo.h" |
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| 17 | |
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| 18 | #define |
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| 19 | #include "AVRGenRegisterInfo.inc" |
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| 20 | |
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| 21 | namespace llvm { |
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| 22 | |
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| 23 | /// Utilities relating to AVR registers. |
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| 24 | class AVRRegisterInfo : public AVRGenRegisterInfo { |
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| 25 | public: |
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| 26 | AVRRegisterInfo(); |
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| 27 | |
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| 28 | public: |
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| 29 | const uint16_t * |
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| 30 | getCalleeSavedRegs(const MachineFunction *MF = nullptr) const override; |
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| 31 | const uint32_t *getCallPreservedMask(const MachineFunction &MF, |
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| 32 | CallingConv::ID CC) const override; |
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| 33 | BitVector getReservedRegs(const MachineFunction &MF) const override; |
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| 34 | |
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| 35 | const TargetRegisterClass * |
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| 36 | getLargestLegalSuperClass(const TargetRegisterClass *RC, |
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| 37 | const MachineFunction &MF) const override; |
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| 38 | |
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| 39 | /// Stack Frame Processing Methods |
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| 40 | bool eliminateFrameIndex(MachineBasicBlock::iterator MI, int SPAdj, |
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| 41 | unsigned FIOperandNum, |
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| 42 | RegScavenger *RS = nullptr) const override; |
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| 43 | |
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| 44 | Register getFrameRegister(const MachineFunction &MF) const override; |
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| 45 | |
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| 46 | const TargetRegisterClass * |
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| 47 | getPointerRegClass(const MachineFunction &MF, |
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| 48 | unsigned Kind = 0) const override; |
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| 49 | |
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| 50 | /// Splits a 16-bit `DREGS` register into the lo/hi register pair. |
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| 51 | /// \param Reg A 16-bit register to split. |
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| 52 | void splitReg(Register Reg, Register &LoReg, Register &HiReg) const; |
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| 53 | |
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| 54 | bool shouldCoalesce(MachineInstr *MI, const TargetRegisterClass *SrcRC, |
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| 55 | unsigned SubReg, const TargetRegisterClass *DstRC, |
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| 56 | unsigned DstSubReg, const TargetRegisterClass *NewRC, |
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| 57 | LiveIntervals &LIS) const override; |
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| 58 | }; |
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| 59 | |
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| 60 | } // end namespace llvm |
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| 61 | |
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| 62 | #endif // LLVM_AVR_REGISTER_INFO_H |
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| 63 | |
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