X86CompressEVEX.cpp File Reference

#include "MCTargetDesc/X86BaseInfo.h"
#include "MCTargetDesc/X86InstComments.h"
#include "X86.h"
#include "X86InstrInfo.h"
#include "X86Subtarget.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/MC/MCInstrDesc.h"
#include "llvm/Pass.h"
#include <atomic>
#include <cassert>
#include <cstdint>
#include "X86GenCompressEVEXTables.inc"

Go to the source code of this file.

Classes
struct	X86CompressEVEXTableEntry

Macros
#define	COMP_EVEX_DESC   "Compressing EVEX instrs when possible"
#define	COMP_EVEX_NAME   "x86-compress-evex"
#define	DEBUG_TYPE   COMP_EVEX_NAME

Functions
static bool	usesExtendedRegister (const MachineInstr &MI)
static bool	performCustomAdjustments (MachineInstr &MI, unsigned NewOpc)
static bool	isRedundantNewDataDest (MachineInstr &MI, const X86Subtarget &ST)
static bool	CompressEVEXImpl (MachineInstr &MI, const X86Subtarget &ST)

Macro Definition Documentation

COMP_EVEX_DESC

#define COMP_EVEX_DESC   "Compressing EVEX instrs when possible"

Definition at line 68 of file X86CompressEVEX.cpp.

COMP_EVEX_NAME

#define COMP_EVEX_NAME   "x86-compress-evex"

Definition at line 69 of file X86CompressEVEX.cpp.

DEBUG_TYPE

#define DEBUG_TYPE   COMP_EVEX_NAME

Definition at line 71 of file X86CompressEVEX.cpp.

Function Documentation

CompressEVEXImpl()

static bool CompressEVEXImpl ( MachineInstr &  MI, const X86Subtarget &  ST  )

static

Definition at line 207 of file X86CompressEVEX.cpp.

References llvm::X86::AC_EVEX_2_EVEX, llvm::X86::AC_EVEX_2_LEGACY, llvm::X86::AC_EVEX_2_VEX, assert(), llvm::X86II::EncodingMask, llvm::ArrayRef< T >::end(), llvm::X86II::EVEX, llvm::X86II::EVEX_B, llvm::X86II::EVEX_K, llvm::X86II::EVEX_L2, llvm::X86II::EVEX_NF, llvm::X86II::hasNewDataDest(), I, isRedundantNewDataDest(), llvm::X86II::LEGACY, llvm_unreachable, llvm::lower_bound(), MI, performCustomAdjustments(), llvm::MCInstrDesc::TSFlags, usesExtendedRegister(), and llvm::X86II::VEX.

isRedundantNewDataDest()

static bool isRedundantNewDataDest ( MachineInstr &  MI, const X86Subtarget &  ST  )

static

Definition at line 185 of file X86CompressEVEX.cpp.

References llvm::X86::getFirstAddrOperandIdx(), llvm::MachineOperand::getReg(), llvm::MachineOperand::isReg(), and MI.

Referenced by CompressEVEXImpl().

performCustomAdjustments()

static bool performCustomAdjustments ( MachineInstr &  MI, unsigned  NewOpc  )

static

Definition at line 125 of file X86CompressEVEX.cpp.

References assert(), and MI.

Referenced by CompressEVEXImpl().

usesExtendedRegister()

static bool usesExtendedRegister ( const MachineInstr &  MI )

static

Definition at line 94 of file X86CompressEVEX.cpp.

References assert(), llvm::X86II::isApxExtendedReg(), llvm::X86II::isZMMReg(), and MI.

Referenced by CompressEVEXImpl().