AArch64MCLFIRewriter.cpp File Reference

#include "AArch64MCLFIRewriter.h"
#include "AArch64AddressingModes.h"
#include "MCTargetDesc/AArch64MCTargetDesc.h"
#include "Utils/AArch64BaseInfo.h"
#include "llvm/ADT/Twine.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCInstBuilder.h"
#include "llvm/MC/MCInstrDesc.h"
#include "llvm/MC/MCInstrInfo.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/Support/CommandLine.h"
#include "AArch64GenSystemOperands.inc"

Go to the source code of this file.

Classes
struct	llvm::AArch64::LFIVariantEntry
struct	llvm::AArch64::PairVariantEntry
struct	llvm::AArch64::SIMDPostEntry
struct	llvm::AArch64::MemInfoEntry

Namespaces
namespace	llvm
	This is an optimization pass for GlobalISel generic memory operations.
namespace	llvm::AArch64

Macros
#define	GET_LFIVariantTable_DECL
#define	GET_PairVariantTable_DECL
#define	GET_SIMDPostTable_DECL
#define	GET_MemInfoTable_DECL
#define	GET_LFIVariantTable_IMPL
#define	GET_PairVariantTable_IMPL
#define	GET_SIMDPostTable_IMPL
#define	GET_MemInfoTable_IMPL

Enumerations
enum	llvm::AArch64::LFIAddrMode : uint8_t {   llvm::AArch64::LFI_AM_Ui = 0 , llvm::AArch64::LFI_AM_RoW = 1 , llvm::AArch64::LFI_AM_RoX = 2 , llvm::AArch64::LFI_AM_Pre = 3 ,   llvm::AArch64::LFI_AM_Post = 4 }

Functions
static bool	isSyscall (const MCInst &Inst)
static bool	isPrivilegedTP (int64_t Reg)
static bool	isTPRead (const MCInst &Inst)
static bool	isTPWrite (const MCInst &Inst)
static bool	isPrivilegedTPAccess (const MCInst &Inst)
static bool	isFakeMemAccess (const MCInst &Inst)
static bool	mayPrefetch (const MCInst &Inst)
static bool	isAuthenticatedBranch (unsigned Opcode)
static bool	isAuthenticatedCall (unsigned Opcode)
static bool	isAuthenticatedReturn (unsigned Opcode)
static bool	isExceptionReturn (unsigned Opcode)
static bool	pacWritesLR (const MCInst &Inst)
static bool	isVASysOp (const MCInst &Inst)
static MCInst	replaceRegAt (const MCInst &Inst, unsigned Idx, MCRegister NewReg)
static unsigned	convertVariantToRoW (unsigned Op, unsigned ExpectedMode)
static unsigned	convertRoXToRoW (unsigned Op, unsigned &Shift)
static bool	getRoWShift (unsigned Op, unsigned &Shift)
static unsigned	convertPrePostToBase (unsigned Op, bool &IsPre, bool &IsNoOffset)

Variables
static cl::opt< bool >	LFIGuardElim ("aarch64-lfi-guard-elim", cl::Hidden, cl::desc("Enable the LFI guard elimination optimization"), cl::init(true))
static constexpr MCRegister	LFIBaseReg = AArch64::X27
static constexpr MCRegister	LFIAddrReg = AArch64::X28
static constexpr MCRegister	LFIScratchReg = AArch64::X26
static constexpr MCRegister	LFICtxReg = AArch64::X25
static constexpr unsigned	LFITPOffset = 2
static constexpr int	LFISyscallOffset = -8

Macro Definition Documentation

GET_LFIVariantTable_DECL

#define GET_LFIVariantTable_DECL

Definition at line 71 of file AArch64MCLFIRewriter.cpp.

GET_LFIVariantTable_IMPL

#define GET_LFIVariantTable_IMPL

Definition at line 75 of file AArch64MCLFIRewriter.cpp.

GET_MemInfoTable_DECL

#define GET_MemInfoTable_DECL

Definition at line 74 of file AArch64MCLFIRewriter.cpp.

GET_MemInfoTable_IMPL

#define GET_MemInfoTable_IMPL

Definition at line 78 of file AArch64MCLFIRewriter.cpp.

GET_PairVariantTable_DECL

#define GET_PairVariantTable_DECL

Definition at line 72 of file AArch64MCLFIRewriter.cpp.

GET_PairVariantTable_IMPL

#define GET_PairVariantTable_IMPL

Definition at line 76 of file AArch64MCLFIRewriter.cpp.

GET_SIMDPostTable_DECL

#define GET_SIMDPostTable_DECL

Definition at line 73 of file AArch64MCLFIRewriter.cpp.

GET_SIMDPostTable_IMPL

#define GET_SIMDPostTable_IMPL

Definition at line 77 of file AArch64MCLFIRewriter.cpp.

Function Documentation

convertPrePostToBase()

unsigned convertPrePostToBase ( unsigned Op, bool & IsPre, bool & IsNoOffset )

static

Definition at line 274 of file AArch64MCLFIRewriter.cpp.

References E().

Referenced by llvm::isLFIPrePostMemAccess().

convertRoXToRoW()

unsigned convertRoXToRoW ( unsigned Op, unsigned & Shift )

static

Definition at line 251 of file AArch64MCLFIRewriter.cpp.

References E(), and llvm::AArch64::LFI_AM_RoX.

convertVariantToRoW()

unsigned convertVariantToRoW ( unsigned Op, unsigned ExpectedMode )

static

Definition at line 244 of file AArch64MCLFIRewriter.cpp.

References E().

Referenced by llvm::isLFIPrePostMemAccess().

getRoWShift()

bool getRoWShift ( unsigned Op, unsigned & Shift )

static

Definition at line 260 of file AArch64MCLFIRewriter.cpp.

References E(), and llvm::AArch64::LFI_AM_RoW.

isAuthenticatedBranch()

bool isAuthenticatedBranch ( unsigned Opcode )

static

Definition at line 160 of file AArch64MCLFIRewriter.cpp.

isAuthenticatedCall()

bool isAuthenticatedCall ( unsigned Opcode )

static

Definition at line 172 of file AArch64MCLFIRewriter.cpp.

isAuthenticatedReturn()

bool isAuthenticatedReturn ( unsigned Opcode )

static

Definition at line 184 of file AArch64MCLFIRewriter.cpp.

isExceptionReturn()

bool isExceptionReturn ( unsigned Opcode )

static

Definition at line 188 of file AArch64MCLFIRewriter.cpp.

isFakeMemAccess()

bool isFakeMemAccess ( const MCInst & Inst )

static

Definition at line 132 of file AArch64MCLFIRewriter.cpp.

References llvm::MCInst::getOpcode().

isPrivilegedTP()

bool isPrivilegedTP ( int64_t Reg )

static

Definition at line 103 of file AArch64MCLFIRewriter.cpp.

References Reg.

Referenced by isPrivilegedTPAccess().

isPrivilegedTPAccess()

bool isPrivilegedTPAccess ( const MCInst & Inst )

static

Definition at line 118 of file AArch64MCLFIRewriter.cpp.

References llvm::MCOperand::getImm(), llvm::MCInst::getOpcode(), llvm::MCInst::getOperand(), and isPrivilegedTP().

isSyscall()

bool isSyscall ( const MCInst & Inst )

static

Definition at line 99 of file AArch64MCLFIRewriter.cpp.

References llvm::MCInst::getOpcode().

isTPRead()

bool isTPRead ( const MCInst & Inst )

static

Definition at line 108 of file AArch64MCLFIRewriter.cpp.

References llvm::MCOperand::getImm(), llvm::MCInst::getOpcode(), and llvm::MCInst::getOperand().

isTPWrite()

bool isTPWrite ( const MCInst & Inst )

static

Definition at line 113 of file AArch64MCLFIRewriter.cpp.

References llvm::MCOperand::getImm(), llvm::MCInst::getOpcode(), and llvm::MCInst::getOperand().

isVASysOp()

bool isVASysOp ( const MCInst & Inst )

static

Definition at line 208 of file AArch64MCLFIRewriter.cpp.

References llvm::MCOperand::getImm(), llvm::MCInst::getOpcode(), and llvm::MCInst::getOperand().

mayPrefetch()

bool mayPrefetch ( const MCInst & Inst )

static

Definition at line 147 of file AArch64MCLFIRewriter.cpp.

References llvm::MCInst::getOpcode().

pacWritesLR()

bool pacWritesLR ( const MCInst & Inst )

static

Definition at line 193 of file AArch64MCLFIRewriter.cpp.

References llvm::MCInst::getOpcode().

replaceRegAt()

MCInst replaceRegAt ( const MCInst & Inst, unsigned Idx, MCRegister NewReg )

static

Definition at line 228 of file AArch64MCLFIRewriter.cpp.

References assert().

Variable Documentation

LFIAddrReg

MCRegister LFIAddrReg = AArch64::X28

staticconstexpr

Definition at line 86 of file AArch64MCLFIRewriter.cpp.

LFIBaseReg

MCRegister LFIBaseReg = AArch64::X27

staticconstexpr

Definition at line 85 of file AArch64MCLFIRewriter.cpp.

LFICtxReg

MCRegister LFICtxReg = AArch64::X25

staticconstexpr

Definition at line 88 of file AArch64MCLFIRewriter.cpp.

LFIGuardElim

cl::opt< bool > LFIGuardElim("aarch64-lfi-guard-elim", cl::Hidden, cl::desc("Enable the LFI guard elimination optimization"), cl::init(true)) ( "aarch64-lfi-guard-elim" , cl::Hidden , cl::desc("Enable the LFI guard elimination optimization") , cl::init(true)  )

static

LFIScratchReg

MCRegister LFIScratchReg = AArch64::X26

staticconstexpr

Definition at line 87 of file AArch64MCLFIRewriter.cpp.

LFISyscallOffset

int LFISyscallOffset = -8

staticconstexpr

Definition at line 97 of file AArch64MCLFIRewriter.cpp.

LFITPOffset

unsigned LFITPOffset = 2

staticconstexpr

Definition at line 93 of file AArch64MCLFIRewriter.cpp.