llvm::MCSymbolRefExpr Class Reference

Represent a reference to a symbol from inside an expression. More...

#include "llvm/MC/MCExpr.h"

Inheritance diagram for llvm::MCSymbolRefExpr:

Public Types
enum	VariantKind : uint16_t { VK_COFF_IMGREL32 = 3 , FirstTargetSpecifier }
Public Types inherited from llvm::MCExpr
enum	ExprKind : uint8_t {   Binary , Constant , SymbolRef , Unary ,   Specifier , Target }

Public Member Functions
Accessors
const MCSymbol &	getSymbol () const
VariantKind	getKind () const
uint16_t	getSpecifier () const
Public Member Functions inherited from llvm::MCExpr
	MCExpr (const MCExpr &)=delete
MCExpr &	operator= (const MCExpr &)=delete
ExprKind	getKind () const
SMLoc	getLoc () const
LLVM_ABI void	dump () const
LLVM_ABI bool	evaluateAsAbsolute (int64_t &Res) const
	Try to evaluate the expression to an absolute value.
LLVM_ABI bool	evaluateAsAbsolute (int64_t &Res, const MCAssembler &Asm) const
LLVM_ABI bool	evaluateAsAbsolute (int64_t &Res, const MCAssembler *Asm) const
LLVM_ABI bool	evaluateKnownAbsolute (int64_t &Res, const MCAssembler &Asm) const
	Aggressive variant of evaluateAsRelocatable when relocations are unavailable (e.g.
LLVM_ABI bool	evaluateAsRelocatable (MCValue &Res, const MCAssembler *Asm) const
	Try to evaluate the expression to a relocatable value, i.e.
LLVM_ABI bool	evaluateAsValue (MCValue &Res, const MCAssembler &Asm) const
	Try to evaluate the expression to the form (a - b + constant) where neither a nor b are variables.
LLVM_ABI MCFragment *	findAssociatedFragment () const
	Find the "associated section" for this expression, which is currently defined as the absolute section for constants, or otherwise the section associated with the first defined symbol in the expression.

Static Public Member Functions
static bool	classof (const MCExpr *E)
Construction
static const MCSymbolRefExpr *	create (const MCSymbol *Symbol, MCContext &Ctx, SMLoc Loc=SMLoc())
static LLVM_ABI const MCSymbolRefExpr *	create (const MCSymbol *Symbol, Spec specifier, MCContext &Ctx, SMLoc Loc=SMLoc())
Static Public Member Functions inherited from llvm::MCExpr
static LLVM_ABI bool	evaluateSymbolicAdd (const MCAssembler *, bool, const MCValue &, const MCValue &, MCValue &)

Additional Inherited Members
Protected Types inherited from llvm::MCExpr
using	Spec = uint16_t
Protected Member Functions inherited from llvm::MCExpr
	MCExpr (ExprKind Kind, SMLoc Loc, unsigned SubclassData=0)
LLVM_ABI bool	evaluateAsRelocatableImpl (MCValue &Res, const MCAssembler *Asm, bool InSet) const
unsigned	getSubclassData () const

Detailed Description

Represent a reference to a symbol from inside an expression.

A symbol reference in an expression may be a use of a label, a use of an assembler variable (defined constant), or constitute an implicit definition of the symbol as external.

Definition at line 190 of file MCExpr.h.

Member Enumeration Documentation

VariantKind

enum llvm::MCSymbolRefExpr::VariantKind : uint16_t

Enumerator
VK_COFF_IMGREL32
FirstTargetSpecifier

Definition at line 197 of file MCExpr.h.

Member Function Documentation

classof()

bool llvm::MCSymbolRefExpr::classof ( const MCExpr * E )

inlinestatic

Definition at line 237 of file MCExpr.h.

References E(), llvm::MCExpr::MCExpr(), and llvm::MCExpr::SymbolRef.

create() [1/2]

const MCSymbolRefExpr * llvm::MCSymbolRefExpr::create ( const MCSymbol * Symbol, MCContext & Ctx, SMLoc Loc = SMLoc() )

inlinestatic

Definition at line 214 of file MCExpr.h.

References create().

Referenced by llvm::ConstantPool::addEntry(), llvm::CSKYConstantPool::addEntry(), llvm::MCAsmParser::applySpecifier(), ARM64EmitRuntimeFunction(), ARM64EmitUnwindInfoForSegment(), ARMEmitRuntimeFunction(), ARMEmitUnwindInfo(), buildSymbolDiff(), buildSymbolDiff(), computeLabelDiff(), llvm::MCSpecifierExpr::create(), create(), createGOTRelExprOp(), createPCXCallOP(), createPCXRelExprOp(), createSparcMCOperand(), createVEMCOperand(), llvm::SystemZTargetGOFFStreamer::createWordDiffExpr(), llvm::SystemZTargetHLASMStreamer::createWordDiffExpr(), llvm::AMDGPUDisassembler::decodeVersionImm(), llvm::AsmPrinter::doFinalization(), llvm::AddressPool::emit(), EmitAbsDifference(), llvm::MCStreamer::emitAbsoluteSymbolDiff(), llvm::MCStreamer::emitAbsoluteSymbolDiffAsULEB128(), llvm::AMDGPUTargetELFStreamer::EmitAmdhsaKernelDescriptor(), llvm::TargetLoweringObjectFile::emitCGProfileMetadata(), llvm::MCWinCOFFStreamer::emitCOFFImgRel32(), llvm::MCWinCOFFStreamer::emitCOFFSecRel32(), llvm::MCWinCOFFStreamer::emitCOFFSectionIndex(), llvm::MipsTargetELFStreamer::emitDirectiveCpsetup(), llvm::MipsTargetELFStreamer::emitDirectiveEnd(), emitDirectiveRelocJalr(), llvm::EHStreamer::emitExceptionTable(), llvm::CodeViewContext::emitFileChecksumOffset(), llvm::WebAssemblyAsmPrinter::EmitFunctionAttributes(), llvm::AsmPrinter::emitFunctionBody(), EmitGenDwarfAranges(), EmitGenDwarfInfo(), emitGenDwarfRanges(), llvm::AMDGPUTargetELFStreamer::EmitHSAMetadata(), llvm::ARMAsmPrinter::emitInstruction(), llvm::SystemZAsmPrinter::emitInstruction(), llvm::X86AsmPrinter::emitInstruction(), llvm::AMDGPUTargetELFStreamer::EmitISAVersion(), llvm::ARMAsmPrinter::emitJumpTableAddrs(), llvm::AsmPrinter::emitJumpTableEntry(), llvm::BPFAsmPrinter::emitJumpTableInfo(), llvm::LoongArchAsmPrinter::emitJumpTableInfo(), llvm::ARMAsmPrinter::emitJumpTableInsts(), llvm::ARMAsmPrinter::emitJumpTableTBInst(), llvm::X86AsmPrinter::emitKCFITypeId(), llvm::AsmPrinter::emitLabelPlusOffset(), llvm::ARMAsmPrinter::emitMachineConstantPoolValue(), llvm::CSKYAsmPrinter::emitMachineConstantPoolValue(), llvm::SystemZAsmPrinter::emitMachineConstantPoolValue(), llvm::XtensaAsmPrinter::emitMachineConstantPoolValue(), emitNonLazySymbolPointer(), emitNonLazySymbolPointer(), EmitNop(), llvm::AArch64_ELFTargetObjectFile::emitPersonalityValueImpl(), llvm::MCObjectStreamer::emitRelocDirective(), EmitRuntimeFunction(), llvm::HexagonAsmPrinter::EmitSled(), llvm::LoongArchAsmPrinter::emitSled(), EmitSymbolRefWithOfs(), EmitSymbolRefWithOfs(), llvm::MCStreamer::emitSymbolValue(), EmitUnwindInfo(), llvm::AVRMCELFStreamer::emitValueForModiferKind(), llvm::MCELFStreamer::emitWeakReference(), llvm::MCWinCOFFStreamer::emitWeakReference(), llvm::MCXCOFFStreamer::emitXCOFFRefDirective(), llvm::AsmPrinter::emitXRayTable(), llvm::ARMAsmPrinter::emitXXStructor(), llvm::CodeViewContext::encodeDefRange(), llvm::WasmException::endFunction(), llvm::ELFObjectWriter::executePostLayoutBinding(), llvm::RecordStreamer::flushSymverDirectives(), forceExpAbs(), llvm::MCResourceInfo::gatherResourceInfo(), getAuthPtrSlotSymbolHelper(), llvm::ARMElfTargetObjectFile::getDebugThreadLocalSymbol(), llvm::MipsTargetObjectFile::getDebugThreadLocalSymbol(), llvm::SystemZELFTargetObjectFile::getDebugThreadLocalSymbol(), llvm::TargetLoweringObjectFile::getDebugThreadLocalSymbol(), llvm::X86ELFTargetObjectFile::getDebugThreadLocalSymbol(), llvm::SystemZMCInstLower::getExpr(), llvm::MCAsmInfo::getExprForFDESymbol(), llvm::RISCVMCAsmInfo::getExprForFDESymbol(), llvm::AArch64MCAsmInfoDarwin::getExprForPersonalitySymbol(), llvm::X86_64MCAsmInfoDarwin::getExprForPersonalitySymbol(), getGlobalOffsetTable(), llvm::AArch64MCInstLower::GetGlobalValueSymbol(), llvm::AArch64_ELFTargetObjectFile::getIndirectSymViaGOTPCRel(), llvm::AArch64_MachoTargetObjectFile::getIndirectSymViaGOTPCRel(), llvm::ARMElfTargetObjectFile::getIndirectSymViaGOTPCRel(), llvm::RISCVELFTargetObjectFile::getIndirectSymViaGOTPCRel(), llvm::TargetLoweringObjectFileMachO::getIndirectSymViaGOTPCRel(), llvm::X86_64ELFTargetObjectFile::getIndirectSymViaGOTPCRel(), llvm::X86_64MachoTargetObjectFile::getIndirectSymViaGOTPCRel(), llvm::ARMElfTargetObjectFile::getIndirectSymViaRWPI(), GetOptionalAbsDifference(), llvm::M68kTargetLowering::getPICJumpTableRelocBaseExpr(), llvm::PPCTargetLowering::getPICJumpTableRelocBaseExpr(), llvm::TargetLowering::getPICJumpTableRelocBaseExpr(), llvm::X86TargetLowering::getPICJumpTableRelocBaseExpr(), GetSubDivExpr(), GetSymbolRef(), GetSymbolRef(), llvm::MCResourceInfo::getSymRefExpr(), getTLSGetOffset(), llvm::AArch64_MachoTargetObjectFile::getTTypeGlobalReference(), llvm::ARMElfTargetObjectFile::getTTypeGlobalReference(), llvm::TargetLoweringObjectFile::getTTypeGlobalReference(), llvm::TargetLoweringObjectFileELF::getTTypeGlobalReference(), llvm::TargetLoweringObjectFileMachO::getTTypeGlobalReference(), llvm::X86_64MachoTargetObjectFile::getTTypeGlobalReference(), llvm::TargetLoweringObjectFile::getTTypeReference(), llvm::HexagonLowerToMC(), llvm::HexagonAsmPrinter::HexagonProcessInstruction(), llvm::SIInstrInfo::insertIndirectBranch(), llvm::BPFMCInstLower::Lower(), llvm::LanaiMCInstLower::Lower(), llvm::MSP430MCInstLower::Lower(), llvm::AsmPrinter::lowerBlockAddressConstant(), llvm::AsmPrinter::lowerConstant(), llvm::M68kTargetLowering::LowerCustomJumpTableEntry(), llvm::RISCVTargetLowering::LowerCustomJumpTableEntry(), llvm::VETargetLowering::LowerCustomJumpTableEntry(), llvm::X86TargetLowering::LowerCustomJumpTableEntry(), llvm::TargetLoweringObjectFileELF::lowerDSOLocalEquivalent(), llvm::AVRMCInstLower::lowerInstruction(), llvm::AArch64MCInstLower::lowerOperand(), llvm::AMDGPUMCInstLower::lowerOperand(), llvm::ARMAsmPrinter::lowerOperand(), llvm::CSKYMCInstLower::lowerOperand(), llvm::LowerPPCMachineOperandToMCOperand(), llvm::TargetLoweringObjectFileCOFF::lowerRelativeReference(), llvm::TargetLoweringObjectFileELF::lowerSymbolDifference(), llvm::BPFMCInstLower::LowerSymbolOperand(), llvm::LanaiMCInstLower::LowerSymbolOperand(), llvm::M68kMCInstLower::LowerSymbolOperand(), llvm::MSP430MCInstLower::LowerSymbolOperand(), llvm::XtensaAsmPrinter::LowerSymbolOperand(), LowerSymbolOperand(), llvm::AVRMCInstLower::lowerSymbolOperand(), llvm::CSKYMCInstLower::lowerSymbolOperand(), lowerSymbolOperand(), lowerSymbolOperand(), llvm::AArch64MCInstLower::lowerSymbolOperandCOFF(), llvm::AArch64MCInstLower::lowerSymbolOperandELF(), llvm::AArch64MCInstLower::lowerSymbolOperandMachO(), makeEndMinusStartExpr(), makeStartPlusIntExpr(), llvm::MCAsmParserExtension::parseDirectiveCGProfile(), llvm::FaultMaps::recordFaultingOp(), llvm::LoongArchAsmBackend::relaxAlign(), llvm::AArch64ExternalSymbolizer::tryAddingSymbolicOperand(), llvm::AMDGPUSymbolizer::tryAddingSymbolicOperand(), and llvm::MCExternalSymbolizer::tryAddingSymbolicOperand().

create() [2/2]

const MCSymbolRefExpr * MCSymbolRefExpr::create ( const MCSymbol * Symbol, Spec specifier, MCContext & Ctx, SMLoc Loc = SMLoc() )

static

Definition at line 226 of file MCExpr.cpp.

getKind()

VariantKind llvm::MCSymbolRefExpr::getKind ( ) const

inline

Definition at line 232 of file MCExpr.h.

References llvm::MCExpr::getSubclassData().

Referenced by llvm::MCExpr::evaluateAsRelocatableImpl(), llvm::AMDGPU::getSpecifier(), llvm::getSpecifier(), and llvm::PPCInstPrinter::printTLSCall().

getSpecifier()

uint16_t llvm::MCSymbolRefExpr::getSpecifier ( ) const

inline

Definition at line 233 of file MCExpr.h.

References llvm::MCExpr::getSubclassData().

Referenced by llvm::MCAsmParser::applySpecifier(), llvm::PPCMCCodeEmitter::getDispRI34PCRelEncoding(), needsExpandMemInst(), optimizeToShortImmediateForm(), printExpr(), printExpr(), printExpr(), llvm::SystemZInstPrinterCommon::printPCRelTLSOperand(), and shouldBeSls().

getSymbol()

const MCSymbol & llvm::MCSymbolRefExpr::getSymbol ( ) const

inline

Definition at line 227 of file MCExpr.h.

Referenced by llvm::ConstantPool::addEntry(), llvm::MCAsmParser::applySpecifier(), llvm::MipsTargetELFStreamer::emitAssignment(), llvm::MCWinCOFFStreamer::emitCGProfileEntry(), llvm::NVPTXTargetStreamer::emitValue(), llvm::MCExpr::evaluateAsRelocatableImpl(), EvaluateCRExpr(), llvm::MCWinCOFFStreamer::finalizeCGProfileEntry(), hasGOTReference(), knownBitsMapHelper(), llvm::WebAssemblyInstPrinter::printCatchList(), printExpr(), printExpr(), printExpr(), llvm::PPCInstPrinter::printInst(), llvm::SystemZInstPrinterCommon::printPCRelTLSOperand(), and llvm::PPCInstPrinter::printTLSCall().

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The documentation for this class was generated from the following files:

• include/llvm/MC/MCExpr.h
• lib/MC/MCExpr.cpp