X86CompressEVEX.cpp File Reference

#include "MCTargetDesc/X86BaseInfo.h"
#include "X86.h"
#include "X86InstrInfo.h"
#include "X86Subtarget.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionAnalysisManager.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/CodeGen/MachinePassManager.h"
#include "llvm/IR/Analysis.h"
#include "llvm/MC/MCInstrDesc.h"
#include "llvm/Pass.h"
#include <atomic>
#include <cassert>
#include <cstdint>
#include "X86GenInstrMapping.inc"

Go to the source code of this file.

Macros
#define	COMP_EVEX_DESC   "Compressing EVEX instrs when possible"
#define	COMP_EVEX_NAME   "x86-compress-evex"
#define	DEBUG_TYPE   COMP_EVEX_NAME
#define	GET_X86_COMPRESS_EVEX_TABLE

Functions
static bool	usesExtendedRegister (const MachineInstr &MI)
static bool	performCustomAdjustments (MachineInstr &MI, unsigned NewOpc)
static bool	isKMovNarrowing (unsigned VPMOVOpc, unsigned KMOVOpc)
static bool	tryCompressVPMOVPattern (MachineInstr &MI, MachineBasicBlock &MBB, const X86Subtarget &ST, SmallVectorImpl< MachineInstr * > &ToErase)
static bool	CompressEVEXImpl (MachineInstr &MI, MachineBasicBlock &MBB, const X86Subtarget &ST, SmallVectorImpl< MachineInstr * > &ToErase)
static bool	runOnMF (MachineFunction &MF)
	INITIALIZE_PASS (CompressEVEXLegacy, COMP_EVEX_NAME, COMP_EVEX_DESC, false, false) FunctionPass *llvm

Variables
cl::opt< bool >	X86EnableAPXForRelocation

Macro Definition Documentation

COMP_EVEX_DESC

#define COMP_EVEX_DESC   "Compressing EVEX instrs when possible"

Definition at line 62 of file X86CompressEVEX.cpp.

Referenced by INITIALIZE_PASS().

COMP_EVEX_NAME

#define COMP_EVEX_NAME   "x86-compress-evex"

Definition at line 63 of file X86CompressEVEX.cpp.

Referenced by INITIALIZE_PASS().

DEBUG_TYPE

#define DEBUG_TYPE   COMP_EVEX_NAME

Definition at line 65 of file X86CompressEVEX.cpp.

GET_X86_COMPRESS_EVEX_TABLE

#define GET_X86_COMPRESS_EVEX_TABLE

Definition at line 71 of file X86CompressEVEX.cpp.

Function Documentation

CompressEVEXImpl()

bool CompressEVEXImpl ( MachineInstr & MI, MachineBasicBlock & MBB, const X86Subtarget & ST, SmallVectorImpl< MachineInstr * > & ToErase )

static

Definition at line 317 of file X86CompressEVEX.cpp.

References llvm::X86::AC_EVEX_2_EVEX, llvm::X86::AC_EVEX_2_LEGACY, llvm::X86::AC_EVEX_2_VEX, llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::ArrayRef(), assert(), llvm::BuildMI(), contains(), 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::X86::getFirstAddrOperandIdx(), llvm::X86::getNFVariant(), llvm::X86::getNonNDVariant(), llvm::MachineOperand::getReg(), llvm::getX86SubSuperRegister(), llvm::X86II::hasNewDataDest(), I, llvm::isAddMemInstrWithRelocation(), llvm::MachineOperand::isReg(), llvm::X86II::LEGACY, llvm_unreachable, llvm::lower_bound(), MBB, MI, Opc, performCustomAdjustments(), tryCompressVPMOVPattern(), llvm::MCInstrDesc::TSFlags, usesExtendedRegister(), llvm::X86II::VEX, and X86EnableAPXForRelocation.

Referenced by runOnMF().

INITIALIZE_PASS()

INITIALIZE_PASS	(	CompressEVEXLegacy	,
		COMP_EVEX_NAME	,
		COMP_EVEX_DESC	,
		false	,
		false	)

Definition at line 508 of file X86CompressEVEX.cpp.

References COMP_EVEX_DESC, COMP_EVEX_NAME, and llvm::createX86CompressEVEXLegacyPass().

isKMovNarrowing()

bool isKMovNarrowing ( unsigned VPMOVOpc, unsigned KMOVOpc )

static

Definition at line 183 of file X86CompressEVEX.cpp.

References llvm_unreachable.

Referenced by tryCompressVPMOVPattern().

performCustomAdjustments()

bool performCustomAdjustments ( MachineInstr & MI, unsigned NewOpc )

static

Definition at line 123 of file X86CompressEVEX.cpp.

References assert(), MI, and Opc.

Referenced by CompressEVEXImpl().

runOnMF()

bool runOnMF ( MachineFunction & MF )

static

Definition at line 476 of file X86CompressEVEX.cpp.

References assert(), Changed, CompressEVEXImpl(), llvm::dbgs(), llvm::MachineFunction::getSubtarget(), llvm::is_sorted(), LLVM_DEBUG, llvm::make_early_inc_range(), MBB, and MI.

Referenced by llvm::X86CompressEVEXPass::run().

tryCompressVPMOVPattern()

bool tryCompressVPMOVPattern ( MachineInstr & MI, MachineBasicBlock & MBB, const X86Subtarget & ST, SmallVectorImpl< MachineInstr * > & ToErase )

static

Definition at line 227 of file X86CompressEVEX.cpp.

References llvm::X86::AC_EVEX_2_VEX, llvm::MachineInstr::getOperand(), isKMovNarrowing(), llvm_unreachable, llvm::make_range(), MBB, MI, llvm::MachineInstr::modifiesRegister(), MRI, Opc, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::MachineInstr::setAsmPrinterFlag(), llvm::MachineInstr::setDesc(), llvm::MachineOperand::setReg(), TII, and TRI.

Referenced by CompressEVEXImpl().

usesExtendedRegister()

bool usesExtendedRegister ( const MachineInstr & MI )

static

Definition at line 92 of file X86CompressEVEX.cpp.

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

Referenced by CompressEVEXImpl().

Variable Documentation

X86EnableAPXForRelocation

cl::opt<bool> X86EnableAPXForRelocation

extern

Referenced by CompressEVEXImpl(), llvm::X86InstrInfo::foldMemoryOperandImpl(), getClobberType(), llvm::X86RegisterInfo::getLargestLegalSuperClass(), llvm::X86InstrInfo::optimizeCompareInstr(), STATISTIC(), and suppressAPXForRelocation().