| //===-- BPFFrameLowering.h - Define frame lowering for BPF -----*- C++ -*--===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This class implements BPF-specific bits of TargetFrameLowering class. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIB_TARGET_BPF_BPFFRAMELOWERING_H |
| #define LLVM_LIB_TARGET_BPF_BPFFRAMELOWERING_H |
| |
| #include "llvm/CodeGen/TargetFrameLowering.h" |
| |
| namespace llvm { |
| class BPFSubtarget; |
| |
| class BPFFrameLowering : public TargetFrameLowering { |
| public: |
| explicit BPFFrameLowering(const BPFSubtarget &sti) |
| : TargetFrameLowering(TargetFrameLowering::StackGrowsDown, Align(8), 0) {} |
| |
| void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override; |
| void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override; |
| |
| bool hasFP(const MachineFunction &MF) const override; |
| void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs, |
| RegScavenger *RS) const override; |
| |
| MachineBasicBlock::iterator |
| eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB, |
| MachineBasicBlock::iterator MI) const override { |
| return MBB.erase(MI); |
| } |
| }; |
| } |
| #endif |