PPCMIPeephole.cpp File Reference

#include "MCTargetDesc/PPCMCTargetDesc.h"
#include "MCTargetDesc/PPCPredicates.h"
#include "PPC.h"
#include "PPCInstrBuilder.h"
#include "PPCInstrInfo.h"
#include "PPCMachineFunctionInfo.h"
#include "PPCTargetMachine.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/LiveVariables.h"
#include "llvm/CodeGen/MachineBlockFrequencyInfo.h"
#include "llvm/CodeGen/MachineDominators.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachinePostDominators.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/InitializePasses.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/DebugCounter.h"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "ppc-mi-peepholes"
#define	addRegToUpdate(R)   addRegToUpdateWithLine(R, __LINE__)

Functions
	STATISTIC (RemoveTOCSave, "Number of TOC saves removed")
	STATISTIC (MultiTOCSaves, "Number of functions with multiple TOC saves that must be kept")
	STATISTIC (NumTOCSavesInPrologue, "Number of TOC saves placed in the prologue")
	STATISTIC (NumEliminatedSExt, "Number of eliminated sign-extensions")
	STATISTIC (NumEliminatedZExt, "Number of eliminated zero-extensions")
	STATISTIC (NumOptADDLIs, "Number of optimized ADD instruction fed by LI")
	STATISTIC (NumConvertedToImmediateForm, "Number of instructions converted to their immediate form")
	STATISTIC (NumFunctionsEnteredInMIPeephole, "Number of functions entered in PPC MI Peepholes")
	STATISTIC (NumFixedPointIterations, "Number of fixed-point iterations converting reg-reg instructions " "to reg-imm ones")
	STATISTIC (NumRotatesCollapsed, "Number of pairs of rotate left, clear left/right collapsed")
	STATISTIC (NumEXTSWAndSLDICombined, "Number of pairs of EXTSW and SLDI combined as EXTSWSLI")
	STATISTIC (NumLoadImmZeroFoldedAndRemoved, "Number of LI(8) reg, 0 that are folded to r0 and removed")
	DEBUG_COUNTER (PeepholeXToICounter, "ppc-xtoi-peephole", "Controls whether PPC reg+reg to reg+imm peephole is performed on a MI")
	DEBUG_COUNTER (PeepholePerOpCounter, "ppc-per-op-peephole", "Controls whether PPC per opcode peephole is performed on a MI")
	INITIALIZE_PASS_BEGIN (PPCMIPeephole, DEBUG_TYPE, "PowerPC MI Peephole Optimization", false, false) INITIALIZE_PASS_END(PPCMIPeephole

Variables
static cl::opt< bool >	FixedPointRegToImm ("ppc-reg-to-imm-fixed-point", cl::Hidden, cl::init(true), cl::desc("Iterate to a fixed point when attempting to " "convert reg-reg instructions to reg-imm"))
static cl::opt< bool >	ConvertRegReg ("ppc-convert-rr-to-ri", cl::Hidden, cl::init(true), cl::desc("Convert eligible reg+reg instructions to reg+imm"))
static cl::opt< bool >	EnableSExtElimination ("ppc-eliminate-signext", cl::desc("enable elimination of sign-extensions"), cl::init(true), cl::Hidden)
static cl::opt< bool >	EnableZExtElimination ("ppc-eliminate-zeroext", cl::desc("enable elimination of zero-extensions"), cl::init(true), cl::Hidden)
static cl::opt< bool >	EnableTrapOptimization ("ppc-opt-conditional-trap", cl::desc("enable optimization of conditional traps"), cl::init(false), cl::Hidden)
	DEBUG_TYPE
PowerPC MI Peephole	Optimization
PowerPC MI Peephole	false

Macro Definition Documentation

addRegToUpdate

#define addRegToUpdate

(

R

)

addRegToUpdateWithLine(R, __LINE__)

Definition at line 189 of file PPCMIPeephole.cpp.

DEBUG_TYPE

#define DEBUG_TYPE   "ppc-mi-peepholes"

Definition at line 52 of file PPCMIPeephole.cpp.

Function Documentation

DEBUG_COUNTER() [1/2]

DEBUG_COUNTER	(	PeepholePerOpCounter	,
		"ppc-per-op-peephole"	,
		"Controls whether PPC per opcode peephole is performed on a MI"
	)

DEBUG_COUNTER() [2/2]

DEBUG_COUNTER	(	PeepholeXToICounter	,
		"ppc-xtoi-peephole"	,
		"Controls whether PPC reg+reg to reg+imm peephole is performed on a MI"
	)

INITIALIZE_PASS_BEGIN()

INITIALIZE_PASS_BEGIN	(	PPCMIPeephole	,
		DEBUG_TYPE	,
		"PowerPC MI Peephole Optimization"	,
		false	,
		false
	)

STATISTIC() [1/12]

STATISTIC	(	MultiTOCSaves	,
		"Number of functions with multiple TOC saves that must be kept"
	)

STATISTIC() [2/12]

STATISTIC	(	NumConvertedToImmediateForm	,
		"Number of instructions converted to their immediate form"
	)

STATISTIC() [3/12]

STATISTIC	(	NumEliminatedSExt	,
		"Number of eliminated sign-extensions"
	)

STATISTIC() [4/12]

STATISTIC	(	NumEliminatedZExt	,
		"Number of eliminated zero-extensions"
	)

STATISTIC() [5/12]

STATISTIC	(	NumEXTSWAndSLDICombined	,
		"Number of pairs of EXTSW and SLDI combined as EXTSWSLI"
	)

STATISTIC() [6/12]

STATISTIC	(	NumFixedPointIterations	,
		"Number of fixed-point iterations converting reg-reg instructions " "to reg-imm ones"
	)

STATISTIC() [7/12]

STATISTIC	(	NumFunctionsEnteredInMIPeephole	,
		"Number of functions entered in PPC MI Peepholes"
	)

STATISTIC() [8/12]

STATISTIC	(	NumLoadImmZeroFoldedAndRemoved	,
		"Number of LI(8)	reg,
		0 that are folded to r0 and removed"
	)

STATISTIC() [9/12]

STATISTIC	(	NumOptADDLIs	,
		"Number of optimized ADD instruction fed by LI"
	)

STATISTIC() [10/12]

STATISTIC	(	NumRotatesCollapsed	,
		"Number of pairs of rotate	left,
		clear left/right collapsed"
	)

STATISTIC() [11/12]

STATISTIC	(	NumTOCSavesInPrologue	,
		"Number of TOC saves placed in the prologue"
	)

STATISTIC() [12/12]

STATISTIC	(	RemoveTOCSave	,
		"Number of TOC saves removed"
	)

Variable Documentation

ConvertRegReg

cl::opt< bool > ConvertRegReg("ppc-convert-rr-to-ri", cl::Hidden, cl::init(true), cl::desc("Convert eligible reg+reg instructions to reg+imm")) ( "ppc-convert-rr-to-ri"  , cl::Hidden  , cl::init(true)  , cl::desc("Convert eligible reg+reg instructions to reg+imm")    )

static

DEBUG_TYPE

DEBUG_TYPE

Definition at line 2042 of file PPCMIPeephole.cpp.

EnableSExtElimination

cl::opt< bool > EnableSExtElimination("ppc-eliminate-signext", cl::desc("enable elimination of sign-extensions"), cl::init(true), cl::Hidden) ( "ppc-eliminate-signext"  , cl::desc("enable elimination of sign-extensions")  , cl::init(true)  , cl::Hidden    )

static

EnableTrapOptimization

cl::opt< bool > EnableTrapOptimization("ppc-opt-conditional-trap", cl::desc("enable optimization of conditional traps"), cl::init(false), cl::Hidden) ( "ppc-opt-conditional-trap"  , cl::desc("enable optimization of conditional traps")  , cl::init(false)  , cl::Hidden    )

static

EnableZExtElimination

cl::opt< bool > EnableZExtElimination("ppc-eliminate-zeroext", cl::desc("enable elimination of zero-extensions"), cl::init(true), cl::Hidden) ( "ppc-eliminate-zeroext"  , cl::desc("enable elimination of zero-extensions")  , cl::init(true)  , cl::Hidden    )

static

false

PowerPC MI Peephole false

Definition at line 2043 of file PPCMIPeephole.cpp.

FixedPointRegToImm

cl::opt< bool > FixedPointRegToImm("ppc-reg-to-imm-fixed-point", cl::Hidden, cl::init(true), cl::desc("Iterate to a fixed point when attempting to " "convert reg-reg instructions to reg-imm")) ( "ppc-reg-to-imm-fixed-point"  , cl::Hidden  , cl::init(true)  , cl::desc("Iterate to a fixed point when attempting to " "convert reg-reg instructions to reg-imm")    )

static

Optimization

PowerPC MI Peephole Optimization

Definition at line 2043 of file PPCMIPeephole.cpp.