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//===-- BPFFrameLowering.h - Define frame lowering for BPF -----*- C++ -*--===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// 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, 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
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