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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-exception6//7//===----------------------------------------------------------------------===//8//9// This class implements BPF-specific bits of TargetFrameLowering class.10//11//===----------------------------------------------------------------------===//12 13#ifndef LLVM_LIB_TARGET_BPF_BPFFRAMELOWERING_H14#define LLVM_LIB_TARGET_BPF_BPFFRAMELOWERING_H15 16#include "llvm/CodeGen/TargetFrameLowering.h"17 18namespace llvm {19class BPFSubtarget;20 21class BPFFrameLowering : public TargetFrameLowering {22public:23 explicit BPFFrameLowering(const BPFSubtarget &sti)24 : TargetFrameLowering(TargetFrameLowering::StackGrowsDown, Align(8), 0) {}25 26 void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;27 void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;28 29 void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs,30 RegScavenger *RS) const override;31 32 MachineBasicBlock::iterator33 eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,34 MachineBasicBlock::iterator MI) const override {35 return MBB.erase(MI);36 }37 38protected:39 bool hasFPImpl(const MachineFunction &MF) const override;40};41}42#endif43