Imported Upstream version 5.18.0.167

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2018-10-20 08:25:10 +00:00
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//==- MSP430FrameLowering.h - Define frame lowering for MSP430 --*- C++ -*--==//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
//
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_MSP430_MSP430FRAMELOWERING_H
#define LLVM_LIB_TARGET_MSP430_MSP430FRAMELOWERING_H
#include "MSP430.h"
#include "llvm/CodeGen/TargetFrameLowering.h"
namespace llvm {
class MSP430FrameLowering : public TargetFrameLowering {
protected:
public:
explicit MSP430FrameLowering()
: TargetFrameLowering(TargetFrameLowering::StackGrowsDown, 2, -2, 2) {}
/// emitProlog/emitEpilog - These methods insert prolog and epilog code into
/// the function.
void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
MachineBasicBlock::iterator
eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
MachineBasicBlock::iterator I) const override;
bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
const std::vector<CalleeSavedInfo> &CSI,
const TargetRegisterInfo *TRI) const override;
bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
std::vector<CalleeSavedInfo> &CSI,
const TargetRegisterInfo *TRI) const override;
bool hasFP(const MachineFunction &MF) const override;
bool hasReservedCallFrame(const MachineFunction &MF) const override;
void processFunctionBeforeFrameFinalized(MachineFunction &MF,
RegScavenger *RS = nullptr) const override;
};
} // End llvm namespace
#endif