llvm/llvm/lib/Target/MSP430/MSP430FrameLowering.cpp

//===-- MSP430FrameLowering.cpp - MSP430 Frame Information ----------------===//
//
// 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 file contains the MSP430 implementation of TargetFrameLowering class.
//
//===----------------------------------------------------------------------===//

#include "MSP430FrameLowering.h"
#include "MSP430InstrInfo.h"
#include "MSP430MachineFunctionInfo.h"
#include "MSP430Subtarget.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Function.h"
#include "llvm/Target/TargetOptions.h"

usingnamespacellvm;

MSP430FrameLowering::MSP430FrameLowering(const MSP430Subtarget &STI)
    : … { … }

bool MSP430FrameLowering::hasFP(const MachineFunction &MF) const { … }

bool MSP430FrameLowering::hasReservedCallFrame(const MachineFunction &MF) const { … }

void MSP430FrameLowering::BuildCFI(MachineBasicBlock &MBB,
                                   MachineBasicBlock::iterator MBBI,
                                   const DebugLoc &DL,
                                   const MCCFIInstruction &CFIInst,
                                   MachineInstr::MIFlag Flag) const { … }

void MSP430FrameLowering::emitCalleeSavedFrameMoves(
    MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
    const DebugLoc &DL, bool IsPrologue) const { … }

void MSP430FrameLowering::emitPrologue(MachineFunction &MF,
                                       MachineBasicBlock &MBB) const { … }

void MSP430FrameLowering::emitEpilogue(MachineFunction &MF,
                                       MachineBasicBlock &MBB) const { … }

// FIXME: Can we eleminate these in favour of generic code?
bool MSP430FrameLowering::spillCalleeSavedRegisters(
    MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
    ArrayRef<CalleeSavedInfo> CSI, const TargetRegisterInfo *TRI) const { … }

bool MSP430FrameLowering::restoreCalleeSavedRegisters(
    MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
    MutableArrayRef<CalleeSavedInfo> CSI, const TargetRegisterInfo *TRI) const { … }

MachineBasicBlock::iterator MSP430FrameLowering::eliminateCallFramePseudoInstr(
    MachineFunction &MF, MachineBasicBlock &MBB,
    MachineBasicBlock::iterator I) const { … }

void
MSP430FrameLowering::processFunctionBeforeFrameFinalized(MachineFunction &MF,
                                                         RegScavenger *) const { … }