LLVM: lib/Target/X86/X86OptimizeLEAs.cpp File Reference (original) (raw)

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Namespaces
namespace	llvm
	This is an optimization pass for GlobalISel generic memory operations.

Macros
#define	DEBUG_TYPE "x86-optimize-LEAs"

Functions
	STATISTIC (NumSubstLEAs, "Number of LEA instruction substitutions")
	STATISTIC (NumRedundantLEAs, "Number of redundant LEA instructions removed")
static bool	isIdenticalOp (const MachineOperand &MO1, const MachineOperand &MO2)
	Returns true if two machine operands are identical and they are not physical registers.
static bool	isSimilarDispOp (const MachineOperand &MO1, const MachineOperand &MO2)
	Returns true if two address displacement operands are of the same type and use the same symbol/index/address regardless of the offset.
static bool	isLEA (const MachineInstr &MI)
	Returns true if the instruction is LEA.
static MemOpKey	getMemOpKey (const MachineInstr &MI, unsigned N)
	Returns a hash table key based on memory operands of MI.
static bool	isValidDispOp (const MachineOperand &MO)
	INITIALIZE_PASS (X86OptimizeLEAPass, DEBUG_TYPE, "X86 optimize LEA pass", false, false) int X86OptimizeLEAPass

◆ DEBUG_TYPE

#define DEBUG_TYPE "x86-optimize-LEAs"

◆ getMemOpKey()

◆ INITIALIZE_PASS()

INITIALIZE_PASS	(	X86OptimizeLEAPass	,
DEBUG_TYPE	,
"X86 optimize LEA pass"	,
false	,
false	)

◆ isIdenticalOp()

◆ isLEA()

◆ isSimilarDispOp()

Returns true if two address displacement operands are of the same type and use the same symbol/index/address regardless of the offset.

Definition at line 213 of file X86OptimizeLEAs.cpp.

References assert(), llvm::MachineOperand::getBlockAddress(), llvm::MachineOperand::getGlobal(), llvm::MachineOperand::getIndex(), llvm::MachineOperand::getMBB(), llvm::MachineOperand::getMCSymbol(), llvm::MachineOperand::getSymbolName(), llvm::MachineOperand::isBlockAddress(), llvm::MachineOperand::isCPI(), llvm::MachineOperand::isGlobal(), llvm::MachineOperand::isImm(), llvm::MachineOperand::isJTI(), llvm::MachineOperand::isMBB(), llvm::MachineOperand::isMCSymbol(), llvm::MachineOperand::isSymbol(), and isValidDispOp().

◆ isValidDispOp()

◆ STATISTIC() [1/2]

STATISTIC	(	NumRedundantLEAs	,
"Number of redundant LEA instructions removed"	)

◆ STATISTIC() [2/2]

STATISTIC	(	NumSubstLEAs	,
"Number of LEA instruction substitutions"	)

◆ DisableX86LEAOpt

cl::opt< bool > DisableX86LEAOpt("disable-x86-lea-opt", cl::Hidden, cl::desc("X86: Disable LEA optimizations."), cl::init(false)) ( "disable-x86-lea-opt" , cl::Hidden , cl::desc("X86: Disable LEA optimizations.") , cl::init(false) )	static