X86SuppressAPXForReloc.cpp File Reference

This pass is added to suppress APX features for relocations. More...

#include "X86.h"
#include "X86InstrInfo.h"
#include "X86RegisterInfo.h"
#include "X86Subtarget.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/CodeGen/TargetRegisterInfo.h"
#include "llvm/Support/ErrorHandling.h"

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "x86-suppress-apx-for-relocation"

Functions
	INITIALIZE_PASS_BEGIN (X86SuppressAPXForRelocationPass, DEBUG_TYPE, "X86 Suppress APX features for relocation", false, false) INITIALIZE_PASS_END(X86SuppressAPXForRelocationPass
static void	suppressEGPRRegClass (MachineRegisterInfo *MRI, MachineInstr &MI, const X86Subtarget &ST, unsigned int OpNum)
static void	suppressEGPRRegClassInRegAndUses (MachineRegisterInfo *MRI, MachineInstr &MI, const X86Subtarget &ST, unsigned int OpNum)
static bool	handleInstructionWithEGPR (MachineFunction &MF, const X86Subtarget &ST)
static bool	handleNDDOrNFInstructions (MachineFunction &MF, const X86Subtarget &ST)

Variables
cl::opt< bool >	X86EnableAPXForRelocation ("x86-enable-apx-for-relocation", cl::desc("Enable APX features (EGPR, NDD and NF) for instructions with " "relocations on x86-64 ELF"), cl::init(false))
	DEBUG_TYPE
X86 Suppress APX features for	relocation
X86 Suppress APX features for	false

Detailed Description

This pass is added to suppress APX features for relocations.

It's used to keep backward compatibility with old version of linker having no APX support. It can be removed after APX support is included in the default linker on OS.

Definition in file X86SuppressAPXForReloc.cpp.

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "x86-suppress-apx-for-relocation"

Definition at line 32 of file X86SuppressAPXForReloc.cpp.

Function Documentation

handleInstructionWithEGPR()

static bool handleInstructionWithEGPR ( MachineFunction &  MF, const X86Subtarget &  ST  )

static

Definition at line 97 of file X86SuppressAPXForReloc.cpp.

References llvm::X86::AddrDisp, llvm::dbgs(), llvm::X86II::getMemoryOperandNo(), llvm::X86II::getOperandBias(), llvm::MachineFunction::getRegInfo(), llvm::MachineOperand::getTargetFlags(), LLVM_DEBUG, MBB, MI, llvm::X86II::MO_GOTPCREL, llvm::X86II::MO_GOTTPOFF, MRI, and suppressEGPRRegClassInRegAndUses().

handleNDDOrNFInstructions()

static bool handleNDDOrNFInstructions ( MachineFunction &  MF, const X86Subtarget &  ST  )

static

Definition at line 161 of file X86SuppressAPXForReloc.cpp.

References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addImm(), llvm::X86::AddrDisp, llvm::MachineInstrBuilder::addReg(), llvm::BuildMI(), llvm::dbgs(), llvm::MachineInstr::findRegisterDefOperand(), llvm::X86II::getMemoryOperandNo(), llvm::X86II::getOperandBias(), llvm::MachineFunction::getRegInfo(), llvm::MachineOperand::getTargetFlags(), llvm::MachineOperand::isDead(), LLVM_DEBUG, llvm_unreachable, llvm::make_early_inc_range(), MBB, MI, llvm::X86II::MO_GOTPCREL, llvm::X86II::MO_GOTTPOFF, MRI, llvm::MachineOperand::setIsDead(), suppressEGPRRegClassInRegAndUses(), and TII.

INITIALIZE_PASS_BEGIN()

INITIALIZE_PASS_BEGIN	(	X86SuppressAPXForRelocationPass	,
		DEBUG_TYPE	,
		"X86 Suppress APX features for relocation"	,
		false	,
		false
	)

suppressEGPRRegClass()

static void suppressEGPRRegClass ( MachineRegisterInfo *  MRI, MachineInstr &  MI, const X86Subtarget &  ST, unsigned int  OpNum  )

static

Definition at line 66 of file X86SuppressAPXForReloc.cpp.

References assert(), llvm::X86RegisterInfo::constrainRegClassToNonRex2(), llvm::X86II::isApxExtendedReg(), MI, and MRI.

Referenced by suppressEGPRRegClassInRegAndUses().

suppressEGPRRegClassInRegAndUses()

static void suppressEGPRRegClassInRegAndUses ( MachineRegisterInfo *  MRI, MachineInstr &  MI, const X86Subtarget &  ST, unsigned int  OpNum  )

static

Definition at line 86 of file X86SuppressAPXForReloc.cpp.

References MI, MRI, and suppressEGPRRegClass().

Referenced by handleInstructionWithEGPR(), and handleNDDOrNFInstructions().

Variable Documentation

DEBUG_TYPE

DEBUG_TYPE

Definition at line 59 of file X86SuppressAPXForReloc.cpp.

false

X86 Suppress APX features for false

Definition at line 60 of file X86SuppressAPXForReloc.cpp.

relocation

X86 Suppress APX features for relocation

Definition at line 60 of file X86SuppressAPXForReloc.cpp.

X86EnableAPXForRelocation

cl::opt< bool > X86EnableAPXForRelocation("x86-enable-apx-for-relocation", cl::desc("Enable APX features (EGPR, NDD and NF) for instructions with " "relocations on x86-64 ELF"), cl::init(false))	(	"x86-enable-apx-for-relocation"	,
		cl::desc("Enable APX features (EGPR, NDD and NF) for instructions with " "relocations on x86-64 ELF")	,
		cl::init(false)
	)