LLVM 20.0.0git
AVRFrameLowering.h
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1//===-- AVRFrameLowering.h - Define frame lowering for AVR ------*- 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-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLVM_AVR_FRAME_LOWERING_H
10#define LLVM_AVR_FRAME_LOWERING_H
11
13
14namespace llvm {
15
16/// Utilities for creating function call frames.
18public:
19 explicit AVRFrameLowering();
20
21public:
22 void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
23 void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
24 bool hasFP(const MachineFunction &MF) const override;
28 const TargetRegisterInfo *TRI) const override;
29 bool
33 const TargetRegisterInfo *TRI) const override;
34 bool hasReservedCallFrame(const MachineFunction &MF) const override;
35 bool canSimplifyCallFramePseudos(const MachineFunction &MF) const override;
37 RegScavenger *RS = nullptr) const override;
40 MachineBasicBlock::iterator MI) const override;
41};
42
43} // end namespace llvm
44
45#endif // LLVM_AVR_FRAME_LOWERING_H
MachineBasicBlock & MBB
IRTranslator LLVM IR MI
unsigned const TargetRegisterInfo * TRI
Utilities for creating function call frames.
void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override
emitProlog/emitEpilog - These methods insert prolog and epilog code into the function.
MachineBasicBlock::iterator eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB, MachineBasicBlock::iterator MI) const override
This method is called during prolog/epilog code insertion to eliminate call frame setup and destroy p...
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override
bool hasReservedCallFrame(const MachineFunction &MF) const override
hasReservedCallFrame - Under normal circumstances, when a frame pointer is not required,...
bool hasFP(const MachineFunction &MF) const override
hasFP - Return true if the specified function should have a dedicated frame pointer register.
bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, MutableArrayRef< CalleeSavedInfo > CSI, const TargetRegisterInfo *TRI) const override
restoreCalleeSavedRegisters - Issues instruction(s) to restore all callee saved registers and returns...
bool canSimplifyCallFramePseudos(const MachineFunction &MF) const override
canSimplifyCallFramePseudos - When possible, it's best to simplify the call frame pseudo ops before d...
void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs, RegScavenger *RS=nullptr) const override
This method determines which of the registers reported by TargetRegisterInfo::getCalleeSavedRegs() sh...
bool spillCalleeSavedRegisters(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, ArrayRef< CalleeSavedInfo > CSI, const TargetRegisterInfo *TRI) const override
spillCalleeSavedRegisters - Issues instruction(s) to spill all callee saved registers and returns tru...
ArrayRef - Represent a constant reference to an array (0 or more elements consecutively in memory),...
Definition: ArrayRef.h:41
MutableArrayRef - Represent a mutable reference to an array (0 or more elements consecutively in memo...
Definition: ArrayRef.h:307
Information about stack frame layout on the target.
TargetRegisterInfo base class - We assume that the target defines a static array of TargetRegisterDes...
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18