X86VZeroUpper.cpp File Reference

#include "X86.h"
#include "X86InstrInfo.h"
#include "X86Subtarget.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetInstrInfo.h"

Include dependency graph for X86VZeroUpper.cpp:

Go to the source code of this file.

Defines
#define	DEBUG_TYPE   "x86-vzeroupper"
Functions
	STATISTIC (NumVZU,"Number of vzeroupper instructions inserted")
static bool	isYmmReg (unsigned Reg)
static bool	checkFnHasLiveInYmm (MachineRegisterInfo &MRI)
static bool	clobbersAllYmmRegs (const MachineOperand &MO)
static bool	hasYmmReg (MachineInstr *MI)
static bool	callClobbersAnyYmmReg (MachineInstr *MI)

---

Define Documentation

#define DEBUG_TYPE   "x86-vzeroupper"

Definition at line 30 of file X86VZeroUpper.cpp.

---

Function Documentation

static bool callClobbersAnyYmmReg

(

MachineInstr *

MI

)

[static]

clobbersAnyYmmReg() - Check if any YMM register will be clobbered by this instruction.

Definition at line 142 of file X86VZeroUpper.cpp.

References llvm::MachineOperand::clobbersPhysReg(), llvm::MachineInstr::getNumOperands(), llvm::MachineInstr::getOperand(), llvm::MachineInstr::isCall(), and llvm::MachineOperand::isRegMask().

static bool checkFnHasLiveInYmm

(

MachineRegisterInfo &

MRI

)

[static]

Definition at line 108 of file X86VZeroUpper.cpp.

References I, isYmmReg(), llvm::MachineRegisterInfo::livein_begin(), and llvm::MachineRegisterInfo::livein_end().

static bool clobbersAllYmmRegs

(

const MachineOperand &

MO

)

[static]

Definition at line 117 of file X86VZeroUpper.cpp.

References llvm::MachineOperand::clobbersPhysReg().

Referenced by hasYmmReg().

static bool hasYmmReg

(

MachineInstr *

MI

)

[static]

Definition at line 125 of file X86VZeroUpper.cpp.

References clobbersAllYmmRegs(), llvm::MachineInstr::getNumOperands(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::MachineInstr::isCall(), llvm::MachineOperand::isDebug(), llvm::MachineOperand::isReg(), llvm::MachineOperand::isRegMask(), and isYmmReg().

static bool isYmmReg

(

unsigned

Reg

)

[static]

Definition at line 104 of file X86VZeroUpper.cpp.

Referenced by checkFnHasLiveInYmm(), and hasYmmReg().

STATISTIC	(	NumVZU	,
		"Number of vzeroupper instructions inserted"
	)