LLVM 20.0.0git
BPFFrameLowering.h
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1//===-- BPFFrameLowering.h - Define frame lowering for BPF -----*- 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// This class implements BPF-specific bits of TargetFrameLowering class.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_BPF_BPFFRAMELOWERING_H
14#define LLVM_LIB_TARGET_BPF_BPFFRAMELOWERING_H
15
17
18namespace llvm {
19class BPFSubtarget;
20
22public:
23 explicit BPFFrameLowering(const BPFSubtarget &sti)
25
26 void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
27 void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
28
29 bool hasFP(const MachineFunction &MF) const override;
31 RegScavenger *RS) const override;
32
35 MachineBasicBlock::iterator MI) const override {
36 return MBB.erase(MI);
37 }
38};
39}
40#endif
MachineBasicBlock & MBB
IRTranslator LLVM IR MI
void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override
emitProlog/emitEpilog - These methods insert prolog and epilog code into the function.
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override
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...
BPFFrameLowering(const BPFSubtarget &sti)
void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs, RegScavenger *RS) const override
This method determines which of the registers reported by TargetRegisterInfo::getCalleeSavedRegs() sh...
bool hasFP(const MachineFunction &MF) const override
hasFP - Return true if the specified function should have a dedicated frame pointer register.
Information about stack frame layout on the target.
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
This struct is a compact representation of a valid (non-zero power of two) alignment.
Definition: Alignment.h:39