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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 "MSP430RegisterInfo.h"
#include "llvm/Target/TargetInstrInfo.h"
#define GET_INSTRINFO_HEADER
#include "MSP430GenInstrInfo.inc"
namespace llvm {
class MSP430TargetMachine;
/// MSP430II - This namespace holds all of the target specific flags that
/// instruction info tracks.
///
namespace MSP430II {
enum {
SizeShift = 2,
SizeMask = 7 << SizeShift,
SizeUnknown = 0 << SizeShift,
SizeSpecial = 1 << SizeShift,
Size2Bytes = 2 << SizeShift,
Size4Bytes = 3 << SizeShift,
Size6Bytes = 4 << SizeShift
};
}
class MSP430InstrInfo : public MSP430GenInstrInfo {
const MSP430RegisterInfo RI;
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; }
void copyPhysReg(MachineBasicBlock &MBB,
MachineBasicBlock::iterator I, DebugLoc DL,
unsigned DestReg, unsigned SrcReg,
bool KillSrc) const;
virtual void storeRegToStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned SrcReg, bool isKill,
int FrameIndex,
const TargetRegisterClass *RC,
const TargetRegisterInfo *TRI) const;
virtual void loadRegFromStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned DestReg, int FrameIdx,
const TargetRegisterClass *RC,
const TargetRegisterInfo *TRI) const;
unsigned GetInstSizeInBytes(const MachineInstr *MI) 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,
DebugLoc DL) const;
};
}
#endif
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