derek.holloway
7502bf64a4
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48 lines
1.9 KiB
C++
48 lines
1.9 KiB
C++
//===-- AVRFrameLowering.h - Define frame lowering for AVR ------*- 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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#ifndef LLVM_AVR_FRAME_LOWERING_H
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#define LLVM_AVR_FRAME_LOWERING_H
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#include "llvm/CodeGen/TargetFrameLowering.h"
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namespace llvm {
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/// Utilities for creating function call frames.
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class AVRFrameLowering : public TargetFrameLowering {
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public:
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explicit AVRFrameLowering();
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public:
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void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
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void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
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bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI,
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ArrayRef<CalleeSavedInfo> CSI,
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const TargetRegisterInfo *TRI) const override;
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bool
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restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI,
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MutableArrayRef<CalleeSavedInfo> CSI,
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const TargetRegisterInfo *TRI) const override;
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bool hasReservedCallFrame(const MachineFunction &MF) const override;
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bool canSimplifyCallFramePseudos(const MachineFunction &MF) const override;
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void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs,
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RegScavenger *RS = nullptr) const override;
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MachineBasicBlock::iterator
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eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI) const override;
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protected:
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bool hasFPImpl(const MachineFunction &MF) const override;
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};
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} // end namespace llvm
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#endif // LLVM_AVR_FRAME_LOWERING_H
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