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llvm::TargetLoweringObjectFile Class Referenceabstract

#include <TargetLoweringObjectFile.h>

Inheritance diagram for llvm::TargetLoweringObjectFile:
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Collaboration diagram for llvm::TargetLoweringObjectFile:
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Public Member Functions

MCContext & getContext () const
 
 TargetLoweringObjectFile ()
 
virtual ~TargetLoweringObjectFile ()
 
virtual void Initialize (MCContext &ctx, const TargetMachine &TM)
 
virtual void emitPersonalityValue (MCStreamer &Streamer, const TargetMachine &TM, const MCSymbol *Sym) const
 
virtual void emitModuleFlags (MCStreamer &, ArrayRef< Module::ModuleFlagEntry >, Mangler *, const TargetMachine &) const
 emitModuleFlags - Emit the module flags that the platform cares about. More...
 
virtual bool shouldEmitUsedDirectiveFor (const GlobalValue *GV, Mangler *) const
 
virtual const MCSection * getSectionForConstant (SectionKind Kind) const
 
const MCSection * SectionForGlobal (const GlobalValue *GV, SectionKind Kind, Mangler *Mang, const TargetMachine &TM) const
 
const MCSection * SectionForGlobal (const GlobalValue *GV, Mangler *Mang, const TargetMachine &TM) const
 
virtual const MCSection * getExplicitSectionGlobal (const GlobalValue *GV, SectionKind Kind, Mangler *Mang, const TargetMachine &TM) const =0
 
virtual const MCSection * getSpecialCasedSectionGlobals (const GlobalValue *GV, Mangler *Mang, SectionKind Kind) const
 
virtual const MCExpr * getTTypeGlobalReference (const GlobalValue *GV, Mangler *Mang, MachineModuleInfo *MMI, unsigned Encoding, MCStreamer &Streamer) const
 
MCSymbol * getSymbol (Mangler &M, const GlobalValue *GV) const
 
virtual MCSymbol * getCFIPersonalitySymbol (const GlobalValue *GV, Mangler *Mang, MachineModuleInfo *MMI) const
 
const MCExpr * getTTypeReference (const MCSymbolRefExpr *Sym, unsigned Encoding, MCStreamer &Streamer) const
 
virtual const MCSection * getStaticCtorSection (unsigned Priority=65535) const
 
virtual const MCSection * getStaticDtorSection (unsigned Priority=65535) const
 
virtual const MCExpr * getDebugThreadLocalSymbol (const MCSymbol *Sym) const
 Create a symbol reference to describe the given TLS variable when emitting the address in debug info. More...
 
- Public Member Functions inherited from llvm::MCObjectFileInfo
void InitMCObjectFileInfo (StringRef TT, Reloc::Model RM, CodeModel::Model CM, MCContext &ctx)
 
bool isFunctionEHFrameSymbolPrivate () const
 
bool getSupportsWeakOmittedEHFrame () const
 
bool getCommDirectiveSupportsAlignment () const
 
unsigned getPersonalityEncoding () const
 
unsigned getLSDAEncoding () const
 
unsigned getFDEEncoding (bool CFI) const
 
unsigned getTTypeEncoding () const
 
unsigned getCompactUnwindDwarfEHFrameOnly () const
 
const MCSection * getTextSection () const
 
const MCSection * getDataSection () const
 
const MCSection * getBSSSection () const
 
const MCSection * getLSDASection () const
 
const MCSection * getCompactUnwindSection () const
 
const MCSection * getDwarfAbbrevSection () const
 
const MCSection * getDwarfInfoSection () const
 
const MCSection * getDwarfLineSection () const
 
const MCSection * getDwarfFrameSection () const
 
const MCSection * getDwarfPubNamesSection () const
 
const MCSection * getDwarfPubTypesSection () const
 
const MCSection * getDwarfGnuPubNamesSection () const
 
const MCSection * getDwarfGnuPubTypesSection () const
 
const MCSection * getDwarfDebugInlineSection () const
 
const MCSection * getDwarfStrSection () const
 
const MCSection * getDwarfLocSection () const
 
const MCSection * getDwarfARangesSection () const
 
const MCSection * getDwarfRangesSection () const
 
const MCSection * getDwarfMacroInfoSection () const
 
const MCSection * getDwarfAccelNamesSection () const
 
const MCSection * getDwarfAccelObjCSection () const
 
const MCSection * getDwarfAccelNamespaceSection () const
 
const MCSection * getDwarfAccelTypesSection () const
 
const MCSection * getDwarfInfoDWOSection () const
 
const MCSection * getDwarfAbbrevDWOSection () const
 
const MCSection * getDwarfStrDWOSection () const
 
const MCSection * getDwarfLineDWOSection () const
 
const MCSection * getDwarfLocDWOSection () const
 
const MCSection * getDwarfStrOffDWOSection () const
 
const MCSection * getDwarfAddrSection () const
 
const MCSection * getTLSExtraDataSection () const
 
const MCSection * getTLSDataSection () const
 
const MCSection * getTLSBSSSection () const
 
const MCSection * getStackMapSection () const
 
const MCSection * getDataRelSection () const
 
const MCSection * getDataRelLocalSection () const
 
const MCSection * getDataRelROSection () const
 
const MCSection * getDataRelROLocalSection () const
 
const MCSection * getMergeableConst4Section () const
 
const MCSection * getMergeableConst8Section () const
 
const MCSection * getMergeableConst16Section () const
 
const MCSection * getTLSTLVSection () const
 
const MCSection * getTLSThreadInitSection () const
 
const MCSection * getCStringSection () const
 
const MCSection * getUStringSection () const
 
const MCSection * getTextCoalSection () const
 
const MCSection * getConstTextCoalSection () const
 
const MCSection * getConstDataSection () const
 
const MCSection * getDataCoalSection () const
 
const MCSection * getDataCommonSection () const
 
const MCSection * getDataBSSSection () const
 
const MCSection * getFourByteConstantSection () const
 
const MCSection * getEightByteConstantSection () const
 
const MCSection * getSixteenByteConstantSection () const
 
const MCSection * getLazySymbolPointerSection () const
 
const MCSection * getNonLazySymbolPointerSection () const
 
const MCSection * getDrectveSection () const
 
const MCSection * getPDataSection () const
 
const MCSection * getXDataSection () const
 
const MCSection * getEHFrameSection ()
 

Static Public Member Functions

static SectionKind getKindForGlobal (const GlobalValue *GV, const TargetMachine &TM)
 

Protected Member Functions

virtual const MCSection * SelectSectionForGlobal (const GlobalValue *GV, SectionKind Kind, Mangler *Mang, const TargetMachine &TM) const
 

Additional Inherited Members

- Protected Attributes inherited from llvm::MCObjectFileInfo
bool CommDirectiveSupportsAlignment
 
bool SupportsWeakOmittedEHFrame
 
bool IsFunctionEHFrameSymbolPrivate
 
unsigned PersonalityEncoding
 
unsigned LSDAEncoding
 
unsigned FDEEncoding
 
unsigned FDECFIEncoding
 
unsigned TTypeEncoding
 
unsigned EHSectionType
 Section flags for eh_frame. More...
 
unsigned EHSectionFlags
 
unsigned CompactUnwindDwarfEHFrameOnly
 
const MCSection * TextSection
 
const MCSection * DataSection
 
const MCSection * BSSSection
 BSSSection - Section that is default initialized to zero. More...
 
const MCSection * ReadOnlySection
 
const MCSection * StaticCtorSection
 
const MCSection * StaticDtorSection
 
const MCSection * LSDASection
 
const MCSection * CompactUnwindSection
 
const MCSection * DwarfAbbrevSection
 
const MCSection * DwarfInfoSection
 
const MCSection * DwarfLineSection
 
const MCSection * DwarfFrameSection
 
const MCSection * DwarfPubTypesSection
 
const MCSection * DwarfDebugInlineSection
 
const MCSection * DwarfStrSection
 
const MCSection * DwarfLocSection
 
const MCSection * DwarfARangesSection
 
const MCSection * DwarfRangesSection
 
const MCSection * DwarfMacroInfoSection
 
const MCSection * DwarfPubNamesSection
 
const MCSection * DwarfAccelNamesSection
 
const MCSection * DwarfAccelObjCSection
 
const MCSection * DwarfAccelNamespaceSection
 
const MCSection * DwarfAccelTypesSection
 
const MCSection * DwarfInfoDWOSection
 These are used for the Fission separate debug information files. More...
 
const MCSection * DwarfAbbrevDWOSection
 
const MCSection * DwarfStrDWOSection
 
const MCSection * DwarfLineDWOSection
 
const MCSection * DwarfLocDWOSection
 
const MCSection * DwarfStrOffDWOSection
 
const MCSection * DwarfAddrSection
 
const MCSection * DwarfGnuPubNamesSection
 Sections for newer gnu pubnames and pubtypes. More...
 
const MCSection * DwarfGnuPubTypesSection
 
const MCSection * TLSExtraDataSection
 
const MCSection * TLSDataSection
 
const MCSection * TLSBSSSection
 
const MCSection * StackMapSection
 StackMap section. More...
 
const MCSection * EHFrameSection
 
const MCSection * DataRelSection
 
const MCSection * DataRelLocalSection
 
const MCSection * DataRelROSection
 
const MCSection * DataRelROLocalSection
 
const MCSection * MergeableConst4Section
 
const MCSection * MergeableConst8Section
 
const MCSection * MergeableConst16Section
 
const MCSection * TLSTLVSection
 
const MCSection * TLSThreadInitSection
 
const MCSection * CStringSection
 
const MCSection * UStringSection
 
const MCSection * TextCoalSection
 
const MCSection * ConstTextCoalSection
 
const MCSection * ConstDataSection
 
const MCSection * DataCoalSection
 
const MCSection * DataCommonSection
 
const MCSection * DataBSSSection
 
const MCSection * FourByteConstantSection
 
const MCSection * EightByteConstantSection
 
const MCSection * SixteenByteConstantSection
 
const MCSection * LazySymbolPointerSection
 
const MCSection * NonLazySymbolPointerSection
 
const MCSection * DrectveSection
 
const MCSection * PDataSection
 
const MCSection * XDataSection
 

Detailed Description

Definition at line 35 of file TargetLoweringObjectFile.h.

Constructor & Destructor Documentation

llvm::TargetLoweringObjectFile::TargetLoweringObjectFile ( )
inline

Definition at line 45 of file TargetLoweringObjectFile.h.

TargetLoweringObjectFile::~TargetLoweringObjectFile ( )
virtual

Definition at line 47 of file TargetLoweringObjectFile.cpp.

Member Function Documentation

virtual void llvm::TargetLoweringObjectFile::emitModuleFlags ( MCStreamer &  ,
ArrayRef< Module::ModuleFlagEntry >  ,
Mangler *  ,
const TargetMachine &   
) const
inlinevirtual

emitModuleFlags - Emit the module flags that the platform cares about.

Reimplemented in llvm::TargetLoweringObjectFileCOFF, and llvm::TargetLoweringObjectFileMachO.

Definition at line 59 of file TargetLoweringObjectFile.h.

Referenced by llvm::AsmPrinter::doFinalization().

void TargetLoweringObjectFile::emitPersonalityValue ( MCStreamer &  Streamer,
const TargetMachine &  TM,
const MCSymbol *  Sym 
) const
virtual

Reimplemented in llvm::TargetLoweringObjectFileELF.

Definition at line 116 of file TargetLoweringObjectFile.cpp.

Referenced by llvm::DwarfCFIException::EndModule().

MCSymbol * TargetLoweringObjectFile::getCFIPersonalitySymbol ( const GlobalValue *  GV,
Mangler *  Mang,
MachineModuleInfo *  MMI 
) const
virtual

Reimplemented in llvm::TargetLoweringObjectFileMachO, llvm::TargetLoweringObjectFileELF, and llvm::X86_64MachoTargetObjectFile.

Definition at line 111 of file TargetLoweringObjectFile.cpp.

References getSymbol().

Referenced by llvm::DwarfCFIException::BeginFunction(), and llvm::Win64Exception::EndFunction().

MCContext& llvm::TargetLoweringObjectFile::getContext ( ) const
inline

Definition at line 43 of file TargetLoweringObjectFile.h.

Referenced by getTTypeGlobalReference(), getTTypeReference(), llvm::HexagonTargetObjectFile::Initialize(), llvm::MipsTargetObjectFile::Initialize(), and llvm::AMDGPUAsmPrinter::runOnMachineFunction().

const MCExpr * TargetLoweringObjectFile::getDebugThreadLocalSymbol ( const MCSymbol *  Sym) const
virtual

Create a symbol reference to describe the given TLS variable when emitting the address in debug info.

Definition at line 331 of file TargetLoweringObjectFile.cpp.

References llvm::MCSymbolRefExpr::Create().

Referenced by llvm::CompileUnit::createGlobalVariableDIE().

virtual const MCSection* llvm::TargetLoweringObjectFile::getExplicitSectionGlobal ( const GlobalValue *  GV,
SectionKind  Kind,
Mangler *  Mang,
const TargetMachine &  TM 
) const
pure virtual

getExplicitSectionGlobal - Targets should implement this method to assign a section to globals with an explicit section specfied. The implementation of this method can assume that GV->hasSection() is true.

Implemented in llvm::TargetLoweringObjectFileCOFF, llvm::NVPTXTargetObjectFile, llvm::TargetLoweringObjectFileMachO, and llvm::TargetLoweringObjectFileELF.

Referenced by SectionForGlobal().

SectionKind TargetLoweringObjectFile::getKindForGlobal ( const GlobalValue *  GV,
const TargetMachine &  TM 
)
static

getKindForGlobal - Classify the specified global variable into a set of target independent categories embodied in SectionKind.

getKindForGlobal - This is a top-level target-independent classifier for a global variable. Given an global variable and information from TM, it classifies the global in a variety of ways that make various target implementations simpler. The target implementation is free to ignore this extra info of course.

Definition at line 127 of file TargetLoweringObjectFile.cpp.

References llvm::CallingConv::C, llvm::dyn_cast(), llvm::SectionKind::getBSS(), llvm::SectionKind::getBSSExtern(), llvm::SectionKind::getBSSLocal(), llvm::SectionKind::getCommon(), llvm::TargetMachine::getDataLayout(), llvm::SectionKind::getDataNoRel(), llvm::SectionKind::getDataRel(), llvm::SectionKind::getDataRelLocal(), llvm::GlobalVariable::getInitializer(), llvm::SectionKind::getMergeable1ByteCString(), llvm::SectionKind::getMergeable2ByteCString(), llvm::SectionKind::getMergeable4ByteCString(), llvm::SectionKind::getMergeableConst(), llvm::SectionKind::getMergeableConst16(), llvm::SectionKind::getMergeableConst4(), llvm::SectionKind::getMergeableConst8(), llvm::SectionKind::getReadOnly(), llvm::SectionKind::getReadOnlyWithRel(), llvm::SectionKind::getReadOnlyWithRelLocal(), llvm::Constant::getRelocationInfo(), llvm::TargetMachine::getRelocationModel(), llvm::SectionKind::getText(), llvm::SectionKind::getThreadBSS(), llvm::SectionKind::getThreadData(), llvm::Value::getType(), llvm::DataLayout::getTypeAllocSize(), llvm::Constant::GlobalRelocations, llvm::GlobalValue::hasAvailableExternallyLinkage(), llvm::GlobalValue::hasCommonLinkage(), llvm::GlobalValue::hasExternalLinkage(), llvm::GlobalValue::hasLocalLinkage(), llvm::GlobalValue::hasUnnamedAddr(), llvm::GlobalVariable::isConstant(), llvm::GlobalValue::isDeclaration(), IsNullTerminatedString(), isSuitableForBSS(), llvm::GlobalVariable::isThreadLocal(), llvm_unreachable, llvm::Constant::LocalRelocation, llvm::Constant::NoRelocation, llvm::TargetOptions::NoZerosInBSS, llvm::TargetMachine::Options, and llvm::Reloc::Static.

Referenced by llvm::AsmPrinter::EmitGlobalVariable(), llvm::HexagonTargetObjectFile::IsGlobalInSmallSection(), llvm::MipsTargetObjectFile::IsGlobalInSmallSection(), and SectionForGlobal().

const MCSection * TargetLoweringObjectFile::getSectionForConstant ( SectionKind  Kind) const
virtual

getSectionForConstant - Given a constant with the SectionKind, return a section that it should be placed in.

getSectionForConstant - Given a mergable constant with the specified size and relocation information, return a section that it should be placed in.

Reimplemented in llvm::TargetLoweringObjectFileMachO, llvm::NVPTXTargetObjectFile, and llvm::TargetLoweringObjectFileELF.

Definition at line 291 of file TargetLoweringObjectFile.cpp.

References llvm::MCObjectFileInfo::DataSection, llvm::SectionKind::isReadOnly(), and llvm::MCObjectFileInfo::ReadOnlySection.

Referenced by llvm::AsmPrinter::EmitConstantPool(), and llvm::AsmPrinter::EmitJumpTableInfo().

virtual const MCSection* llvm::TargetLoweringObjectFile::getSpecialCasedSectionGlobals ( const GlobalValue *  GV,
Mangler *  Mang,
SectionKind  Kind 
) const
inlinevirtual

getSpecialCasedSectionGlobals - Allow the target to completely override section assignment of a global.

Definition at line 107 of file TargetLoweringObjectFile.h.

virtual const MCSection* llvm::TargetLoweringObjectFile::getStaticCtorSection ( unsigned  Priority = 65535) const
inlinevirtual

Reimplemented in llvm::TargetLoweringObjectFileELF.

Definition at line 135 of file TargetLoweringObjectFile.h.

References llvm::MCObjectFileInfo::StaticCtorSection.

virtual const MCSection* llvm::TargetLoweringObjectFile::getStaticDtorSection ( unsigned  Priority = 65535) const
inlinevirtual

Reimplemented in llvm::TargetLoweringObjectFileELF.

Definition at line 140 of file TargetLoweringObjectFile.h.

References llvm::MCObjectFileInfo::StaticDtorSection.

MCSymbol * TargetLoweringObjectFile::getSymbol ( Mangler &  M,
const GlobalValue *  GV 
) const

Return the MCSymbol for the specified global value. This symbol is the main label that is the address of the global

Return the MCSymbol for the specified global value. This symbol is the main label that is the address of the global.

Definition at line 102 of file TargetLoweringObjectFile.cpp.

References llvm::Mangler::getNameWithPrefix(), llvm::MCContext::GetOrCreateSymbol(), and llvm::SmallString< InternalLen >::str().

Referenced by getCFIPersonalitySymbol(), llvm::AsmPrinter::getSymbol(), and getTTypeGlobalReference().

const MCExpr * TargetLoweringObjectFile::getTTypeGlobalReference ( const GlobalValue *  GV,
Mangler *  Mang,
MachineModuleInfo *  MMI,
unsigned  Encoding,
MCStreamer &  Streamer 
) const
virtual

getTTypeGlobalReference - Return an MCExpr to use for a reference to the specified global variable from exception handling information.

Reimplemented in llvm::TargetLoweringObjectFileMachO, llvm::TargetLoweringObjectFileELF, llvm::ARMElfTargetObjectFile, and llvm::X86_64MachoTargetObjectFile.

Definition at line 302 of file TargetLoweringObjectFile.cpp.

References llvm::MCSymbolRefExpr::Create(), getContext(), getSymbol(), and getTTypeReference().

Referenced by llvm::AsmPrinter::EmitTTypeReference(), llvm::TargetLoweringObjectFileELF::getTTypeGlobalReference(), and llvm::TargetLoweringObjectFileMachO::getTTypeGlobalReference().

const MCExpr * TargetLoweringObjectFile::getTTypeReference ( const MCSymbolRefExpr *  Sym,
unsigned  Encoding,
MCStreamer &  Streamer 
) const

Definition at line 312 of file TargetLoweringObjectFile.cpp.

References llvm::MCSymbolRefExpr::Create(), llvm::MCBinaryExpr::CreateSub(), llvm::MCContext::CreateTempSymbol(), llvm::dwarf::DW_EH_PE_absptr, llvm::dwarf::DW_EH_PE_pcrel, llvm::MCStreamer::EmitLabel(), getContext(), and llvm::report_fatal_error().

Referenced by llvm::TargetLoweringObjectFileELF::getTTypeGlobalReference(), llvm::TargetLoweringObjectFileMachO::getTTypeGlobalReference(), and getTTypeGlobalReference().

void TargetLoweringObjectFile::Initialize ( MCContext &  ctx,
const TargetMachine &  TM 
)
virtual

Initialize - this method must be called before any actual lowering is done. This specifies the current context for codegen, and gives the lowering implementations a chance to set up their default sections.

Reimplemented in llvm::NVPTXTargetObjectFile, llvm::ARMElfTargetObjectFile, llvm::MipsTargetObjectFile, llvm::HexagonTargetObjectFile, and llvm::XCoreTargetObjectFile.

Definition at line 40 of file TargetLoweringObjectFile.cpp.

References llvm::TargetMachine::getCodeModel(), llvm::TargetMachine::getRelocationModel(), llvm::TargetMachine::getTargetTriple(), and llvm::MCObjectFileInfo::InitMCObjectFileInfo().

Referenced by llvm::XCoreTargetObjectFile::Initialize(), llvm::HexagonTargetObjectFile::Initialize(), llvm::MipsTargetObjectFile::Initialize(), llvm::ARMElfTargetObjectFile::Initialize(), and llvm::NVPTXTargetObjectFile::Initialize().

const MCSection * TargetLoweringObjectFile::SectionForGlobal ( const GlobalValue *  GV,
SectionKind  Kind,
Mangler *  Mang,
const TargetMachine &  TM 
) const

SectionForGlobal - This method computes the appropriate section to emit the specified global variable or function definition. This should not be passed external (or available externally) globals.

Definition at line 255 of file TargetLoweringObjectFile.cpp.

References getExplicitSectionGlobal(), llvm::GlobalValue::hasSection(), and SelectSectionForGlobal().

Referenced by llvm::AsmPrinter::EmitGlobalVariable(), llvm::ARMAsmPrinter::EmitStartOfAsmFile(), and SectionForGlobal().

const MCSection* llvm::TargetLoweringObjectFile::SectionForGlobal ( const GlobalValue *  GV,
Mangler *  Mang,
const TargetMachine &  TM 
) const
inline

SectionForGlobal - This method computes the appropriate section to emit the specified global variable or function definition. This should not be passed external (or available externally) globals.

Definition at line 91 of file TargetLoweringObjectFile.h.

References getKindForGlobal(), and SectionForGlobal().

const MCSection * TargetLoweringObjectFile::SelectSectionForGlobal ( const GlobalValue *  GV,
SectionKind  Kind,
Mangler *  Mang,
const TargetMachine &  TM 
) const
protectedvirtual

Reimplemented in llvm::TargetLoweringObjectFileCOFF, llvm::TargetLoweringObjectFileMachO, llvm::TargetLoweringObjectFileELF, llvm::HexagonTargetObjectFile, and llvm::MipsTargetObjectFile.

Definition at line 269 of file TargetLoweringObjectFile.cpp.

References llvm::MCObjectFileInfo::BSSSection, llvm::MCObjectFileInfo::getDataSection(), llvm::MCObjectFileInfo::getTextSection(), llvm::SectionKind::isBSS(), llvm::SectionKind::isReadOnly(), llvm::SectionKind::isText(), llvm::SectionKind::isThreadLocal(), and llvm::MCObjectFileInfo::ReadOnlySection.

Referenced by SectionForGlobal().

virtual bool llvm::TargetLoweringObjectFile::shouldEmitUsedDirectiveFor ( const GlobalValue *  GV,
Mangler *   
) const
inlinevirtual

shouldEmitUsedDirectiveFor - This hook allows targets to selectively decide not to emit the UsedDirective for some symbols in llvm.used. FIXME: REMOVE this (rdar://7071300)

Reimplemented in llvm::TargetLoweringObjectFileMachO.

Definition at line 67 of file TargetLoweringObjectFile.h.

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

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