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