AArch64MacroFusion.cpp File Reference

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

Include dependency graph for AArch64MacroFusion.cpp:

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. More...
static bool	isArithmeticCbzPair (const MachineInstr *FirstMI, const MachineInstr &SecondMI)
	ALU operations followed by CBZ/CBNZ. More...
static bool	isAESPair (const MachineInstr *FirstMI, const MachineInstr &SecondMI)
	AES crypto encoding or decoding. More...
static bool	isCryptoEORPair (const MachineInstr *FirstMI, const MachineInstr &SecondMI)
	AESE/AESD/PMULL + EOR. More...
static bool	isLiteralsPair (const MachineInstr *FirstMI, const MachineInstr &SecondMI)
	Literal generation. More...
static bool	isAddressLdStPair (const MachineInstr *FirstMI, const MachineInstr &SecondMI)
	Fuse address generation and loads or stores. More...
static bool	isCCSelectPair (const MachineInstr *FirstMI, const MachineInstr &SecondMI)
	Compare and conditional select. More...
static bool	isArithmeticLogicPair (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. More...

Function Documentation

isAddressLdStPair()

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

static

Fuse address generation and loads or stores.

Definition at line 194 of file AArch64MacroFusion.cpp.

References llvm::AArch64ISD::ADR, llvm::AArch64ISD::ADRP, llvm::MachineOperand::getImm(), llvm::MachineInstr::getOpcode(), and llvm::MachineInstr::getOperand().

Referenced by shouldScheduleAdjacent().

isAESPair()

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

static

AES crypto encoding or decoding.

Definition at line 120 of file AArch64MacroFusion.cpp.

References llvm::MachineInstr::getOpcode().

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(), and llvm::MachineOperand::getReg().

Referenced by shouldScheduleAdjacent().

isArithmeticCbzPair()

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

static

ALU operations followed by CBZ/CBNZ.

Definition at line 70 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 279 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 236 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 138 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 161 of file AArch64MacroFusion.cpp.

References llvm::AArch64ISD::ADRP, llvm::MachineOperand::getImm(), llvm::MachineInstr::getOpcode(), and llvm::MachineInstr::getOperand().

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 381 of file AArch64MacroFusion.cpp.

References isAddressLdStPair(), llvm::isAESPair(), isArithmeticBccPair(), isArithmeticCbzPair(), isArithmeticLogicPair(), isCCSelectPair(), isCryptoEORPair(), llvm::isLiteralsPair(), and llvm::ARM_MB::ST.