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//=- HexagonInstrInfo.h - Hexagon 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 Hexagon implementation of the TargetInstrInfo class.
//
//===----------------------------------------------------------------------===//
#ifndef HexagonINSTRUCTIONINFO_H
#define HexagonINSTRUCTIONINFO_H
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetFrameLowering.h"
#include "HexagonRegisterInfo.h"
#define GET_INSTRINFO_HEADER
#include "HexagonGenInstrInfo.inc"
namespace llvm {
class HexagonInstrInfo : public HexagonGenInstrInfo {
const HexagonRegisterInfo RI;
const HexagonSubtarget& Subtarget;
public:
explicit HexagonInstrInfo(HexagonSubtarget &ST);
/// 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 HexagonRegisterInfo &getRegisterInfo() const { return RI; }
/// isLoadFromStackSlot - If the specified machine instruction is a direct
/// load from a stack slot, return the virtual or physical register number of
/// the destination along with the FrameIndex of the loaded stack slot. If
/// not, return 0. This predicate must return 0 if the instruction has
/// any side effects other than loading from the stack slot.
virtual unsigned isLoadFromStackSlot(const MachineInstr *MI,
int &FrameIndex) const;
/// isStoreToStackSlot - If the specified machine instruction is a direct
/// store to a stack slot, return the virtual or physical register number of
/// the source reg along with the FrameIndex of the loaded stack slot. If
/// not, return 0. This predicate must return 0 if the instruction has
/// any side effects other than storing to the stack slot.
virtual unsigned isStoreToStackSlot(const MachineInstr *MI,
int &FrameIndex) const;
virtual bool AnalyzeBranch(MachineBasicBlock &MBB,MachineBasicBlock *&TBB,
MachineBasicBlock *&FBB,
SmallVectorImpl<MachineOperand> &Cond,
bool AllowModify) const;
virtual unsigned RemoveBranch(MachineBasicBlock &MBB) const;
virtual unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
MachineBasicBlock *FBB,
const SmallVectorImpl<MachineOperand> &Cond,
DebugLoc DL) const;
virtual void copyPhysReg(MachineBasicBlock &MBB,
MachineBasicBlock::iterator I, DebugLoc DL,
unsigned DestReg, unsigned SrcReg,
bool KillSrc) const;
virtual void storeRegToStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MBBI,
unsigned SrcReg, bool isKill, int FrameIndex,
const TargetRegisterClass *RC,
const TargetRegisterInfo *TRI) const;
virtual void storeRegToAddr(MachineFunction &MF, unsigned SrcReg, bool isKill,
SmallVectorImpl<MachineOperand> &Addr,
const TargetRegisterClass *RC,
SmallVectorImpl<MachineInstr*> &NewMIs) const;
virtual void loadRegFromStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MBBI,
unsigned DestReg, int FrameIndex,
const TargetRegisterClass *RC,
const TargetRegisterInfo *TRI) const;
virtual void loadRegFromAddr(MachineFunction &MF, unsigned DestReg,
SmallVectorImpl<MachineOperand> &Addr,
const TargetRegisterClass *RC,
SmallVectorImpl<MachineInstr*> &NewMIs) const;
virtual MachineInstr* foldMemoryOperandImpl(MachineFunction &MF,
MachineInstr* MI,
const SmallVectorImpl<unsigned> &Ops,
int FrameIndex) const;
virtual MachineInstr* foldMemoryOperandImpl(MachineFunction &MF,
MachineInstr* MI,
const SmallVectorImpl<unsigned> &Ops,
MachineInstr* LoadMI) const {
return 0;
}
unsigned createVR(MachineFunction* MF, MVT VT) const;
virtual bool isPredicable(MachineInstr *MI) const;
virtual bool
PredicateInstruction(MachineInstr *MI,
const SmallVectorImpl<MachineOperand> &Cond) const;
virtual bool isProfitableToIfCvt(MachineBasicBlock &MBB, unsigned NumCyles,
unsigned ExtraPredCycles,
const BranchProbability &Probability) const;
virtual bool isProfitableToIfCvt(MachineBasicBlock &TMBB,
unsigned NumTCycles, unsigned ExtraTCycles,
MachineBasicBlock &FMBB,
unsigned NumFCycles, unsigned ExtraFCycles,
const BranchProbability &Probability) const;
virtual bool isPredicated(const MachineInstr *MI) const;
virtual bool DefinesPredicate(MachineInstr *MI,
std::vector<MachineOperand> &Pred) const;
virtual bool
SubsumesPredicate(const SmallVectorImpl<MachineOperand> &Pred1,
const SmallVectorImpl<MachineOperand> &Pred2) const;
virtual bool
ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const;
virtual bool
isProfitableToDupForIfCvt(MachineBasicBlock &MBB,unsigned NumCycles,
const BranchProbability &Probability) const;
bool isValidOffset(const int Opcode, const int Offset) const;
bool isValidAutoIncImm(const EVT VT, const int Offset) const;
bool isMemOp(const MachineInstr *MI) const;
bool isSpillPredRegOp(const MachineInstr *MI) const;
bool isU6_3Immediate(const int value) const;
bool isU6_2Immediate(const int value) const;
bool isU6_1Immediate(const int value) const;
bool isU6_0Immediate(const int value) const;
bool isS4_3Immediate(const int value) const;
bool isS4_2Immediate(const int value) const;
bool isS4_1Immediate(const int value) const;
bool isS4_0Immediate(const int value) const;
bool isS12_Immediate(const int value) const;
bool isU6_Immediate(const int value) const;
bool isS8_Immediate(const int value) const;
bool isS6_Immediate(const int value) const;
bool isConditionalALU32 (const MachineInstr* MI) const;
bool isConditionalLoad (const MachineInstr* MI) const;
bool isDeallocRet(const MachineInstr *MI) const;
private:
int getMatchingCondBranchOpcode(int Opc, bool sense) const;
};
}
#endif
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