X86FixupLEAs.cpp File Reference

#include "X86.h"
#include "X86InstrInfo.h"
#include "X86Subtarget.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Analysis/ProfileSummaryInfo.h"
#include "llvm/CodeGen/LazyMachineBlockFrequencyInfo.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineSizeOpts.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/CodeGen/TargetSchedule.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"

Go to the source code of this file.

Macros
#define	FIXUPLEA_DESC   "X86 LEA Fixup"
#define	FIXUPLEA_NAME   "x86-fixup-LEAs"
#define	DEBUG_TYPE   FIXUPLEA_NAME

Functions
	STATISTIC (NumLEAs, "Number of LEA instructions created")
static bool	isLEA (unsigned Opcode)
static bool	getPreviousInstr (MachineBasicBlock::iterator &I, MachineBasicBlock &MBB)
	getPreviousInstr - Given a reference to an instruction in a basic block, return a reference to the previous instruction in the block, wrapping around to the last instruction of the block if the block branches to itself.
static bool	isInefficientLEAReg (unsigned Reg)
static bool	hasInefficientLEABaseReg (const MachineOperand &Base, const MachineOperand &Index)
	Returns true if this LEA uses base an index registers, and the base register is known to be inefficient for the subtarget.
static bool	hasLEAOffset (const MachineOperand &Offset)
static unsigned	getADDrrFromLEA (unsigned LEAOpcode)
static unsigned	getSUBrrFromLEA (unsigned LEAOpcode)
static unsigned	getADDriFromLEA (unsigned LEAOpcode, const MachineOperand &Offset)
static unsigned	getINCDECFromLEA (unsigned LEAOpcode, bool IsINC)

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   FIXUPLEA_NAME

Definition at line 33 of file X86FixupLEAs.cpp.

FIXUPLEA_DESC

#define FIXUPLEA_DESC   "X86 LEA Fixup"

Definition at line 30 of file X86FixupLEAs.cpp.

FIXUPLEA_NAME

#define FIXUPLEA_NAME   "x86-fixup-LEAs"

Definition at line 31 of file X86FixupLEAs.cpp.

Function Documentation

getADDriFromLEA()

static unsigned getADDriFromLEA ( unsigned  LEAOpcode, const MachineOperand &  Offset  )

inlinestatic

Definition at line 371 of file X86FixupLEAs.cpp.

References llvm_unreachable.

getADDrrFromLEA()

static unsigned getADDrrFromLEA ( unsigned  LEAOpcode )

inlinestatic

Definition at line 347 of file X86FixupLEAs.cpp.

References llvm_unreachable.

getINCDECFromLEA()

static unsigned getINCDECFromLEA ( unsigned  LEAOpcode, bool  IsINC  )

inlinestatic

Definition at line 384 of file X86FixupLEAs.cpp.

References llvm_unreachable.

getPreviousInstr()

static bool getPreviousInstr ( MachineBasicBlock::iterator &  I, MachineBasicBlock &  MBB  )

inlinestatic

getPreviousInstr - Given a reference to an instruction in a basic block, return a reference to the previous instruction in the block, wrapping around to the last instruction of the block if the block branches to itself.

Definition at line 291 of file X86FixupLEAs.cpp.

References llvm::MachineBasicBlock::begin(), llvm::MachineBasicBlock::end(), I, llvm::MachineBasicBlock::isPredecessor(), and MBB.

getSUBrrFromLEA()

static unsigned getSUBrrFromLEA ( unsigned  LEAOpcode )

inlinestatic

Definition at line 359 of file X86FixupLEAs.cpp.

References llvm_unreachable.

hasInefficientLEABaseReg()

static bool hasInefficientLEABaseReg ( const MachineOperand &  Base, const MachineOperand &  Index  )

inlinestatic

Returns true if this LEA uses base an index registers, and the base register is known to be inefficient for the subtarget.

Definition at line 337 of file X86FixupLEAs.cpp.

References llvm::sampleprof::Base, and isInefficientLEAReg().

hasLEAOffset()

static bool hasLEAOffset ( const MachineOperand &  Offset )

inlinestatic

Definition at line 343 of file X86FixupLEAs.cpp.

References llvm::Offset.

isInefficientLEAReg()

static bool isInefficientLEAReg ( unsigned  Reg )

inlinestatic

Definition at line 328 of file X86FixupLEAs.cpp.

Referenced by hasInefficientLEABaseReg().

isLEA()

static bool isLEA ( unsigned  Opcode )

static

Definition at line 216 of file X86FixupLEAs.cpp.

Referenced by llvm::X86InstrInfo::isDataInvariant().

STATISTIC()

STATISTIC	(	NumLEAs	,
		"Number of LEA instructions created"
	)