MVETPAndVPTOptimisationsPass.cpp File Reference

#include "ARM.h"
#include "ARMSubtarget.h"
#include "MVETailPredUtils.h"
#include "Thumb2InstrInfo.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineDominators.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineLoopInfo.h"
#include "llvm/InitializePasses.h"
#include "llvm/Support/Debug.h"
#include <cassert>

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "arm-mve-vpt-opts"

Functions
	INITIALIZE_PASS_BEGIN (MVETPAndVPTOptimisations, DEBUG_TYPE, "ARM MVE TailPred and VPT Optimisations pass", false, false) INITIALIZE_PASS_END(MVETPAndVPTOptimisations
ARM MVE TailPred and VPT Optimisations static false MachineInstr *	LookThroughCOPY (MachineInstr *MI, MachineRegisterInfo *MRI)
static bool	findLoopComponents (MachineLoop *ML, MachineRegisterInfo *MRI, MachineInstr *&LoopStart, MachineInstr *&LoopPhi, MachineInstr *&LoopDec, MachineInstr *&LoopEnd)
static void	RevertWhileLoopSetup (MachineInstr *MI, const TargetInstrInfo *TII)
static bool	IsInvalidTPInstruction (MachineInstr &MI)
static bool	IsVCMP (unsigned Opcode)
static bool	CanHaveSwappedOperands (unsigned Opcode)
static ARMCC::CondCodes	GetCondCode (MachineInstr &Instr)
static bool	IsVPNOTEquivalent (MachineInstr &Cond, MachineInstr &Prev)
static bool	IsWritingToVCCR (MachineInstr &Instr)
static bool	MoveVPNOTBeforeFirstUser (MachineBasicBlock &MBB, MachineBasicBlock::iterator Iter, Register Reg)

Variables
static cl::opt< bool >	MergeEndDec ("arm-enable-merge-loopenddec", cl::Hidden, cl::desc("Enable merging Loop End and Dec instructions."), cl::init(true))
static cl::opt< bool >	SetLRPredicate ("arm-set-lr-predicate", cl::Hidden, cl::desc("Enable setting lr as a predicate in tail predication regions."), cl::init(true))
	DEBUG_TYPE
ARM MVE TailPred and VPT Optimisations	pass
ARM MVE TailPred and VPT Optimisations	false

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "arm-mve-vpt-opts"

Definition at line 35 of file MVETPAndVPTOptimisationsPass.cpp.

Function Documentation

CanHaveSwappedOperands()

bool CanHaveSwappedOperands ( unsigned Opcode )

static

Definition at line 550 of file MVETPAndVPTOptimisationsPass.cpp.

Referenced by IsVPNOTEquivalent().

findLoopComponents()

bool findLoopComponents ( MachineLoop * ML, MachineRegisterInfo * MRI, MachineInstr *& LoopStart, MachineInstr *& LoopPhi, MachineInstr *& LoopDec, MachineInstr *& LoopEnd )

static

Definition at line 110 of file MVETPAndVPTOptimisationsPass.cpp.

References llvm::dbgs(), llvm::MachineOperand::getMBB(), llvm::MachineInstr::getNumOperands(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), LLVM_DEBUG, LookThroughCOPY(), ML, MRI, T, and llvm::MachineBasicBlock::terminators().

GetCondCode()

ARMCC::CondCodes GetCondCode ( MachineInstr & Instr )

static

Definition at line 572 of file MVETPAndVPTOptimisationsPass.cpp.

References assert(), and IsVCMP().

Referenced by IsVPNOTEquivalent().

INITIALIZE_PASS_BEGIN()

INITIALIZE_PASS_BEGIN	(	MVETPAndVPTOptimisations	,
		DEBUG_TYPE	,
		"ARM MVE TailPred and VPT Optimisations pass"	,
		false	,
		false	)

References DEBUG_TYPE, and INITIALIZE_PASS_DEPENDENCY.

IsInvalidTPInstruction()

bool IsInvalidTPInstruction ( MachineInstr & MI )

static

Definition at line 264 of file MVETPAndVPTOptimisationsPass.cpp.

References llvm::isLoopStart(), and MI.

IsVCMP()

bool IsVCMP ( unsigned Opcode )

static

Definition at line 545 of file MVETPAndVPTOptimisationsPass.cpp.

References llvm::VCMPOpcodeToVPT().

Referenced by GetCondCode(), and IsVPNOTEquivalent().

IsVPNOTEquivalent()

bool IsVPNOTEquivalent ( MachineInstr & Cond, MachineInstr & Prev )

static

Definition at line 579 of file MVETPAndVPTOptimisationsPass.cpp.

References assert(), CanHaveSwappedOperands(), Cond, GetCondCode(), llvm::MachineInstr::getOpcode(), llvm::MachineInstr::getOperand(), llvm::ARMCC::getOppositeCondition(), llvm::ARMCC::getSwappedCondition(), llvm::MachineOperand::isIdenticalTo(), and IsVCMP().

IsWritingToVCCR()

bool IsWritingToVCCR ( MachineInstr & Instr )

static

Definition at line 605 of file MVETPAndVPTOptimisationsPass.cpp.

References llvm::TargetRegisterClass::getID(), and llvm::Register::isVirtual().

LookThroughCOPY()

ARM MVE TailPred and VPT Optimisations static false MachineInstr * LookThroughCOPY ( MachineInstr * MI, MachineRegisterInfo * MRI )

static

Definition at line 99 of file MVETPAndVPTOptimisationsPass.cpp.

References LookThroughCOPY(), MI, and MRI.

Referenced by findLoopComponents(), and LookThroughCOPY().

MoveVPNOTBeforeFirstUser()

bool MoveVPNOTBeforeFirstUser ( MachineBasicBlock & MBB, MachineBasicBlock::iterator Iter, Register Reg )

static

Definition at line 651 of file MVETPAndVPTOptimisationsPass.cpp.

References assert(), llvm::dbgs(), llvm::MachineInstr::dump(), llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::getVPTInstrPredicate(), LLVM_DEBUG, MBB, llvm::ARMVCC::None, Reg, and llvm::MachineOperand::setIsKill().

RevertWhileLoopSetup()

void RevertWhileLoopSetup ( MachineInstr * MI, const TargetInstrInfo * TII )

static

Definition at line 186 of file MVETPAndVPTOptimisationsPass.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, assert(), llvm::BuildMI(), llvm::RegState::Define, llvm::ARMCC::EQ, I, MBB, MI, and TII.

Variable Documentation

DEBUG_TYPE

DEBUG_TYPE

Definition at line 96 of file MVETPAndVPTOptimisationsPass.cpp.

false

ARM MVE TailPred and VPT Optimisations false

Definition at line 97 of file MVETPAndVPTOptimisationsPass.cpp.

MergeEndDec

cl::opt< bool > MergeEndDec("arm-enable-merge-loopenddec", cl::Hidden, cl::desc("Enable merging Loop End and Dec instructions."), cl::init(true)) ( "arm-enable-merge-loopenddec" , cl::Hidden , cl::desc("Enable merging Loop End and Dec instructions.") , cl::init(true)  )

static

pass

ARM MVE TailPred and VPT Optimisations pass

Definition at line 97 of file MVETPAndVPTOptimisationsPass.cpp.

SetLRPredicate

cl::opt< bool > SetLRPredicate("arm-set-lr-predicate", cl::Hidden, cl::desc("Enable setting lr as a predicate in tail predication regions."), cl::init(true)) ( "arm-set-lr-predicate" , cl::Hidden , cl::desc("Enable setting lr as a predicate in tail predication regions.") , cl::init(true)  )

static