LLVM 24.0.0git
Classes | Namespaces | Macros | Enumerations | Functions | Variables
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/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 70 of file AArch64MCLFIRewriter.cpp.

◆ GET_LFIVariantTable_IMPL

#define GET_LFIVariantTable_IMPL

Definition at line 74 of file AArch64MCLFIRewriter.cpp.

◆ GET_MemInfoTable_DECL

#define GET_MemInfoTable_DECL

Definition at line 73 of file AArch64MCLFIRewriter.cpp.

◆ GET_MemInfoTable_IMPL

#define GET_MemInfoTable_IMPL

Definition at line 77 of file AArch64MCLFIRewriter.cpp.

◆ GET_PairVariantTable_DECL

#define GET_PairVariantTable_DECL

Definition at line 71 of file AArch64MCLFIRewriter.cpp.

◆ GET_PairVariantTable_IMPL

#define GET_PairVariantTable_IMPL

Definition at line 75 of file AArch64MCLFIRewriter.cpp.

◆ GET_SIMDPostTable_DECL

#define GET_SIMDPostTable_DECL

Definition at line 72 of file AArch64MCLFIRewriter.cpp.

◆ GET_SIMDPostTable_IMPL

#define GET_SIMDPostTable_IMPL

Definition at line 76 of file AArch64MCLFIRewriter.cpp.

Function Documentation

◆ convertPrePostToBase()

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

Definition at line 273 of file AArch64MCLFIRewriter.cpp.

References E().

Referenced by llvm::isLFIPrePostMemAccess().

◆ convertRoXToRoW()

unsigned convertRoXToRoW ( unsigned Op,
unsigned & Shift )
static

Definition at line 250 of file AArch64MCLFIRewriter.cpp.

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

◆ convertVariantToRoW()

unsigned convertVariantToRoW ( unsigned Op,
unsigned ExpectedMode )
static

Definition at line 243 of file AArch64MCLFIRewriter.cpp.

References E().

Referenced by llvm::isLFIPrePostMemAccess().

◆ getRoWShift()

bool getRoWShift ( unsigned Op,
unsigned & Shift )
static

Definition at line 259 of file AArch64MCLFIRewriter.cpp.

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

◆ isAuthenticatedBranch()

bool isAuthenticatedBranch ( unsigned Opcode)
static

Definition at line 159 of file AArch64MCLFIRewriter.cpp.

◆ isAuthenticatedCall()

bool isAuthenticatedCall ( unsigned Opcode)
static

Definition at line 171 of file AArch64MCLFIRewriter.cpp.

◆ isAuthenticatedReturn()

bool isAuthenticatedReturn ( unsigned Opcode)
static

Definition at line 183 of file AArch64MCLFIRewriter.cpp.

◆ isExceptionReturn()

bool isExceptionReturn ( unsigned Opcode)
static

Definition at line 187 of file AArch64MCLFIRewriter.cpp.

◆ isFakeMemAccess()

bool isFakeMemAccess ( const MCInst & Inst)
static

Definition at line 131 of file AArch64MCLFIRewriter.cpp.

References llvm::MCInst::getOpcode().

◆ isPrivilegedTP()

bool isPrivilegedTP ( int64_t Reg)
static

Definition at line 102 of file AArch64MCLFIRewriter.cpp.

References Reg.

Referenced by isPrivilegedTPAccess().

◆ isPrivilegedTPAccess()

bool isPrivilegedTPAccess ( const MCInst & Inst)
static

Definition at line 117 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 98 of file AArch64MCLFIRewriter.cpp.

References llvm::MCInst::getOpcode().

◆ isTPRead()

bool isTPRead ( const MCInst & Inst)
static

Definition at line 107 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 112 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 207 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 146 of file AArch64MCLFIRewriter.cpp.

References llvm::MCInst::getOpcode().

◆ pacWritesLR()

bool pacWritesLR ( const MCInst & Inst)
static

Definition at line 192 of file AArch64MCLFIRewriter.cpp.

References llvm::MCInst::getOpcode().

◆ replaceRegAt()

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

Definition at line 227 of file AArch64MCLFIRewriter.cpp.

References assert().

Variable Documentation

◆ LFIAddrReg

MCRegister LFIAddrReg = AArch64::X28
staticconstexpr

Definition at line 85 of file AArch64MCLFIRewriter.cpp.

◆ LFIBaseReg

MCRegister LFIBaseReg = AArch64::X27
staticconstexpr

Definition at line 84 of file AArch64MCLFIRewriter.cpp.

◆ LFICtxReg

MCRegister LFICtxReg = AArch64::X25
staticconstexpr

Definition at line 87 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 86 of file AArch64MCLFIRewriter.cpp.

◆ LFISyscallOffset

int LFISyscallOffset = -8
staticconstexpr

Definition at line 96 of file AArch64MCLFIRewriter.cpp.

◆ LFITPOffset

unsigned LFITPOffset = 2
staticconstexpr

Definition at line 92 of file AArch64MCLFIRewriter.cpp.

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