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//===- MSP430InstrInfo.h - MSP430 Instruction Information -------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the MSP430 implementation of the TargetInstrInfo class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TARGET_MSP430INSTRINFO_H
#define LLVM_TARGET_MSP430INSTRINFO_H
#include "llvm/Target/TargetInstrInfo.h"
#include "MSP430RegisterInfo.h"
namespace llvm {
class MSP430TargetMachine;
class MSP430InstrInfo : public TargetInstrInfoImpl {
const MSP430RegisterInfo RI;
MSP430TargetMachine &TM;
public:
explicit MSP430InstrInfo(MSP430TargetMachine &TM);
/// getRegisterInfo - TargetInstrInfo is a superset of MRegister info. As
/// such, whenever a client has an instance of instruction info, it should
/// always be able to get register info as well (through this method).
///
virtual const TargetRegisterInfo &getRegisterInfo() const { return RI; }
bool copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
unsigned DestReg, unsigned SrcReg,
const TargetRegisterClass *DestRC,
const TargetRegisterClass *SrcRC) const;
bool isMoveInstr(const MachineInstr& MI,
unsigned &SrcReg, unsigned &DstReg,
unsigned &SrcSubIdx, unsigned &DstSubIdx) const;
virtual void storeRegToStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned SrcReg, bool isKill,
int FrameIndex,
const TargetRegisterClass *RC) const;
virtual void loadRegFromStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned DestReg, int FrameIdx,
const TargetRegisterClass *RC) const;
virtual bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
const std::vector<CalleeSavedInfo> &CSI) const;
virtual bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
const std::vector<CalleeSavedInfo> &CSI) const;
// Branch folding goodness
bool ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const;
bool isUnpredicatedTerminator(const MachineInstr *MI) const;
bool AnalyzeBranch(MachineBasicBlock &MBB,
MachineBasicBlock *&TBB, MachineBasicBlock *&FBB,
SmallVectorImpl<MachineOperand> &Cond,
bool AllowModify) const;
unsigned RemoveBranch(MachineBasicBlock &MBB) const;
unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
MachineBasicBlock *FBB,
const SmallVectorImpl<MachineOperand> &Cond) const;
};
}
#endif
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