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()

static bool CanHaveSwappedOperands ( unsigned  Opcode )

static

Definition at line 551 of file MVETPAndVPTOptimisationsPass.cpp.

Referenced by IsVPNOTEquivalent().

findLoopComponents()

static 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, and llvm::MachineBasicBlock::terminators().

GetCondCode()

static ARMCC::CondCodes GetCondCode ( MachineInstr &  Instr )

static

Definition at line 573 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
	)

IsInvalidTPInstruction()

static bool IsInvalidTPInstruction ( MachineInstr &  MI )

static

Definition at line 264 of file MVETPAndVPTOptimisationsPass.cpp.

References llvm::isLoopStart(), and MI.

IsVCMP()

static bool IsVCMP ( unsigned  Opcode )

static

Definition at line 546 of file MVETPAndVPTOptimisationsPass.cpp.

References llvm::VCMPOpcodeToVPT().

Referenced by GetCondCode(), and IsVPNOTEquivalent().

IsVPNOTEquivalent()

static bool IsVPNOTEquivalent ( MachineInstr &  Cond, MachineInstr &  Prev  )

static

Definition at line 580 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()

static bool IsWritingToVCCR ( MachineInstr &  Instr )

static

Definition at line 606 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 MI, and MRI.

Referenced by findLoopComponents().

MoveVPNOTBeforeFirstUser()

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

static

Definition at line 652 of file MVETPAndVPTOptimisationsPass.cpp.

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

RevertWhileLoopSetup()

static 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, llvm::MachineBasicBlock::terminators(), 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