BPFFrameLowering.cpp revision f3ef5332fa3f4d5ec72c178a2b19dac363a19383
1//===-- BPFFrameLowering.cpp - BPF Frame Information ----------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file contains the BPF implementation of TargetFrameLowering class. 11// 12//===----------------------------------------------------------------------===// 13 14#include "BPFFrameLowering.h" 15#include "BPFInstrInfo.h" 16#include "BPFSubtarget.h" 17#include "llvm/CodeGen/MachineFrameInfo.h" 18#include "llvm/CodeGen/MachineFunction.h" 19#include "llvm/CodeGen/MachineInstrBuilder.h" 20#include "llvm/CodeGen/MachineRegisterInfo.h" 21 22using namespace llvm; 23 24bool BPFFrameLowering::hasFP(const MachineFunction &MF) const { return true; } 25 26void BPFFrameLowering::emitPrologue(MachineFunction &MF, 27 MachineBasicBlock &MBB) const {} 28 29void BPFFrameLowering::emitEpilogue(MachineFunction &MF, 30 MachineBasicBlock &MBB) const {} 31 32void BPFFrameLowering::determineCalleeSaves(MachineFunction &MF, 33 BitVector &SavedRegs, 34 RegScavenger *RS) const { 35 TargetFrameLowering::determineCalleeSaves(MF, SavedRegs, RS); 36 SavedRegs.reset(BPF::R6); 37 SavedRegs.reset(BPF::R7); 38 SavedRegs.reset(BPF::R8); 39 SavedRegs.reset(BPF::R9); 40} 41