AArch64MacroFusion.cpp File Reference

#include "AArch64MacroFusion.h"
#include "AArch64Subtarget.h"
#include "llvm/CodeGen/MacroFusion.h"
#include "llvm/CodeGen/TargetInstrInfo.h"

Go to the source code of this file.

Functions
static bool	isArithmeticBccPair (const MachineInstr *FirstMI, const MachineInstr &SecondMI, bool CmpOnly)
	CMN, CMP, TST followed by Bcc.
static bool	isArithmeticCbzPair (const MachineInstr *FirstMI, const MachineInstr &SecondMI)
	ALU operations followed by CBZ/CBNZ.
static bool	isAESPair (const MachineInstr *FirstMI, const MachineInstr &SecondMI)
	AES crypto encoding or decoding.
static bool	isCryptoEORPair (const MachineInstr *FirstMI, const MachineInstr &SecondMI)
	AESE/AESD/PMULL + EOR.
static bool	isAdrpAddPair (const MachineInstr *FirstMI, const MachineInstr &SecondMI)
static bool	isLiteralsPair (const MachineInstr *FirstMI, const MachineInstr &SecondMI)
	Literal generation.
static bool	isAddressLdStPair (const MachineInstr *FirstMI, const MachineInstr &SecondMI)
	Fuse address generation and loads or stores.
static bool	isCCSelectPair (const MachineInstr *FirstMI, const MachineInstr &SecondMI)
	Compare and conditional select.
static bool	isArithmeticLogicPair (const MachineInstr *FirstMI, const MachineInstr &SecondMI)
static bool	isAddSub2RegAndConstOnePair (const MachineInstr *FirstMI, const MachineInstr &SecondMI)
static bool	shouldScheduleAdjacent (const TargetInstrInfo &TII, const TargetSubtargetInfo &TSI, const MachineInstr *FirstMI, const MachineInstr &SecondMI)
	Check if the instr pair, FirstMI and SecondMI, should be fused together.

Function Documentation

isAddressLdStPair()

static bool isAddressLdStPair ( const MachineInstr *  FirstMI, const MachineInstr &  SecondMI  )

static

Fuse address generation and loads or stores.

Definition at line 198 of file AArch64MacroFusion.cpp.

References llvm::MachineOperand::getImm(), llvm::MachineInstr::getOpcode(), and llvm::MachineInstr::getOperand().

Referenced by shouldScheduleAdjacent().

isAddSub2RegAndConstOnePair()

static bool isAddSub2RegAndConstOnePair ( const MachineInstr *  FirstMI, const MachineInstr &  SecondMI  )

static

Definition at line 383 of file AArch64MacroFusion.cpp.

References llvm::MachineOperand::getImm(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), and llvm::MachineOperand::isImm().

Referenced by shouldScheduleAdjacent().

isAdrpAddPair()

static bool isAdrpAddPair ( const MachineInstr *  FirstMI, const MachineInstr &  SecondMI  )

static

Definition at line 161 of file AArch64MacroFusion.cpp.

References llvm::MachineInstr::getOpcode().

Referenced by shouldScheduleAdjacent().

isAESPair()

static bool isAESPair ( const MachineInstr *  FirstMI, const MachineInstr &  SecondMI  )

static

AES crypto encoding or decoding.

Definition at line 121 of file AArch64MacroFusion.cpp.

References llvm::MachineInstr::getOpcode().

Referenced by shouldScheduleAdjacent().

isArithmeticBccPair()

static bool isArithmeticBccPair ( const MachineInstr *  FirstMI, const MachineInstr &  SecondMI, bool  CmpOnly  )

static

CMN, CMP, TST followed by Bcc.

Definition at line 22 of file AArch64MacroFusion.cpp.

References llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), and llvm::MachineOperand::isReg().

Referenced by shouldScheduleAdjacent().

isArithmeticCbzPair()

static bool isArithmeticCbzPair ( const MachineInstr *  FirstMI, const MachineInstr &  SecondMI  )

static

ALU operations followed by CBZ/CBNZ.

Definition at line 71 of file AArch64MacroFusion.cpp.

References llvm::MachineInstr::getOpcode().

Referenced by shouldScheduleAdjacent().

isArithmeticLogicPair()

static bool isArithmeticLogicPair ( const MachineInstr *  FirstMI, const MachineInstr &  SecondMI  )

static

Definition at line 283 of file AArch64MacroFusion.cpp.

References llvm::MachineInstr::getOpcode().

Referenced by shouldScheduleAdjacent().

isCCSelectPair()

static bool isCCSelectPair ( const MachineInstr *  FirstMI, const MachineInstr &  SecondMI  )

static

Compare and conditional select.

Definition at line 240 of file AArch64MacroFusion.cpp.

References llvm::MachineInstr::definesRegister(), and llvm::MachineInstr::getOpcode().

Referenced by shouldScheduleAdjacent().

isCryptoEORPair()

static bool isCryptoEORPair ( const MachineInstr *  FirstMI, const MachineInstr &  SecondMI  )

static

AESE/AESD/PMULL + EOR.

Definition at line 139 of file AArch64MacroFusion.cpp.

References llvm::MachineInstr::getOpcode().

Referenced by shouldScheduleAdjacent().

isLiteralsPair()

static bool isLiteralsPair ( const MachineInstr *  FirstMI, const MachineInstr &  SecondMI  )

static

Literal generation.

Definition at line 171 of file AArch64MacroFusion.cpp.

References llvm::MachineOperand::getImm(), llvm::MachineInstr::getOpcode(), and llvm::MachineInstr::getOperand().

Referenced by shouldScheduleAdjacent().

shouldScheduleAdjacent()

static bool shouldScheduleAdjacent ( const TargetInstrInfo &  TII, const TargetSubtargetInfo &  TSI, const MachineInstr *  FirstMI, const MachineInstr &  SecondMI  )

static

Check if the instr pair, FirstMI and SecondMI, should be fused together.

Given SecondMI, when FirstMI is unspecified, then check if SecondMI may be part of a fused pair at all.

Definition at line 443 of file AArch64MacroFusion.cpp.

References isAddressLdStPair(), isAddSub2RegAndConstOnePair(), isAdrpAddPair(), isAESPair(), isArithmeticBccPair(), isArithmeticCbzPair(), isArithmeticLogicPair(), isCCSelectPair(), isCryptoEORPair(), and isLiteralsPair().

Referenced by llvm::createAArch64MacroFusionDAGMutation(), llvm::createBranchMacroFusionDAGMutation(), and llvm::createMacroFusionDAGMutation().