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//===-- AMDGPUInstrInfo.h - AMDGPU 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 definition of a TargetInstrInfo class that is common
// to all AMD GPUs.
//
//===----------------------------------------------------------------------===//
#ifndef AMDGPUINSTRUCTIONINFO_H_
#define AMDGPUINSTRUCTIONINFO_H_
#include "AMDGPURegisterInfo.h"
#include "AMDGPUInstrInfo.h"
#include "llvm/Target/TargetInstrInfo.h"
#include <map>
#define GET_INSTRINFO_HEADER
#define GET_INSTRINFO_ENUM
#include "AMDGPUGenInstrInfo.inc"
#define OPCODE_IS_ZERO_INT 0x00000042
#define OPCODE_IS_NOT_ZERO_INT 0x00000045
#define OPCODE_IS_ZERO 0x00000020
#define OPCODE_IS_NOT_ZERO 0x00000023
namespace llvm {
class AMDGPUTargetMachine;
class MachineFunction;
class MachineInstr;
class MachineInstrBuilder;
class AMDGPUInstrInfo : public AMDGPUGenInstrInfo {
private:
const AMDGPURegisterInfo RI;
TargetMachine &TM;
bool getNextBranchInstr(MachineBasicBlock::iterator &iter,
MachineBasicBlock &MBB) const;
public:
explicit AMDGPUInstrInfo(TargetMachine &tm);
virtual const AMDGPURegisterInfo &getRegisterInfo() const = 0;
bool isCoalescableExtInstr(const MachineInstr &MI, unsigned &SrcReg,
unsigned &DstReg, unsigned &SubIdx) const;
unsigned isLoadFromStackSlot(const MachineInstr *MI, int &FrameIndex) const;
unsigned isLoadFromStackSlotPostFE(const MachineInstr *MI,
int &FrameIndex) const;
bool hasLoadFromStackSlot(const MachineInstr *MI,
const MachineMemOperand *&MMO,
int &FrameIndex) const;
unsigned isStoreFromStackSlot(const MachineInstr *MI, int &FrameIndex) const;
unsigned isStoreFromStackSlotPostFE(const MachineInstr *MI,
int &FrameIndex) const;
bool hasStoreFromStackSlot(const MachineInstr *MI,
const MachineMemOperand *&MMO,
int &FrameIndex) const;
MachineInstr *
convertToThreeAddress(MachineFunction::iterator &MFI,
MachineBasicBlock::iterator &MBBI,
LiveVariables *LV) const;
virtual void copyPhysReg(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI, DebugLoc DL,
unsigned DestReg, unsigned SrcReg,
bool KillSrc) const = 0;
void storeRegToStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned SrcReg, bool isKill, int FrameIndex,
const TargetRegisterClass *RC,
const TargetRegisterInfo *TRI) const;
void loadRegFromStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned DestReg, int FrameIndex,
const TargetRegisterClass *RC,
const TargetRegisterInfo *TRI) const;
protected:
MachineInstr *foldMemoryOperandImpl(MachineFunction &MF,
MachineInstr *MI,
const SmallVectorImpl<unsigned> &Ops,
int FrameIndex) const;
MachineInstr *foldMemoryOperandImpl(MachineFunction &MF,
MachineInstr *MI,
const SmallVectorImpl<unsigned> &Ops,
MachineInstr *LoadMI) const;
public:
bool canFoldMemoryOperand(const MachineInstr *MI,
const SmallVectorImpl<unsigned> &Ops) const;
bool unfoldMemoryOperand(MachineFunction &MF, MachineInstr *MI,
unsigned Reg, bool UnfoldLoad, bool UnfoldStore,
SmallVectorImpl<MachineInstr *> &NewMIs) const;
bool unfoldMemoryOperand(SelectionDAG &DAG, SDNode *N,
SmallVectorImpl<SDNode *> &NewNodes) const;
unsigned getOpcodeAfterMemoryUnfold(unsigned Opc,
bool UnfoldLoad, bool UnfoldStore,
unsigned *LoadRegIndex = 0) const;
bool shouldScheduleLoadsNear(SDNode *Load1, SDNode *Load2,
int64_t Offset1, int64_t Offset2,
unsigned NumLoads) const;
bool ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const;
void insertNoop(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI) const;
bool isPredicated(const MachineInstr *MI) const;
bool SubsumesPredicate(const SmallVectorImpl<MachineOperand> &Pred1,
const SmallVectorImpl<MachineOperand> &Pred2) const;
bool DefinesPredicate(MachineInstr *MI,
std::vector<MachineOperand> &Pred) const;
bool isPredicable(MachineInstr *MI) const;
bool isSafeToMoveRegClassDefs(const TargetRegisterClass *RC) const;
// Helper functions that check the opcode for status information
bool isLoadInst(llvm::MachineInstr *MI) const;
bool isExtLoadInst(llvm::MachineInstr *MI) const;
bool isSWSExtLoadInst(llvm::MachineInstr *MI) const;
bool isSExtLoadInst(llvm::MachineInstr *MI) const;
bool isZExtLoadInst(llvm::MachineInstr *MI) const;
bool isAExtLoadInst(llvm::MachineInstr *MI) const;
bool isStoreInst(llvm::MachineInstr *MI) const;
bool isTruncStoreInst(llvm::MachineInstr *MI) const;
virtual MachineInstr* getMovImmInstr(MachineFunction *MF, unsigned DstReg,
int64_t Imm) const = 0;
virtual unsigned getIEQOpcode() const = 0;
virtual bool isMov(unsigned opcode) const = 0;
/// convertToISA - Convert the AMDIL MachineInstr to a supported ISA
/// MachineInstr
virtual void convertToISA(MachineInstr & MI, MachineFunction &MF,
DebugLoc DL) const;
};
} // End llvm namespace
#endif // AMDGPUINSTRINFO_H_
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