Collects and handles dwarf debug information. More...

#include "CodeGen/AsmPrinter/DwarfDebug.h"

Inheritance diagram for llvm::DwarfDebug:

Collaboration diagram for llvm::DwarfDebug:

[legend]

Classes
class	NonTypeUnitContext

Public Member Functions
	DwarfDebug (AsmPrinter A, Module M)

	~DwarfDebug () override

void	beginModule ()
	Emit all Dwarf sections that should come prior to the content. More...

void	endModule () override
	Emit all Dwarf sections that should come after the content. More...

DebugLoc	emitInitialLocDirective (const MachineFunction &MF, unsigned CUID)
	Emits inital debug location directive. More...

void	beginInstruction (const MachineInstr *MI) override
	Process beginning of an instruction. More...

void	addDwarfTypeUnitType (DwarfCompileUnit &CU, StringRef Identifier, DIE &Die, const DICompositeType *CTy)
	Add a DIE to the set of types that we're going to pull into type units. More...

NonTypeUnitContext	enterNonTypeUnitContext ()

void	addArangeLabel (SymbolCU SCU)
	Add a label so that arange data can be generated for it. More...

void	setSymbolSize (const MCSymbol *Sym, uint64_t Size) override
	For symbols that have a size designated (e.g. More...

bool	useAllLinkageNames () const
	Returns whether we should emit all DW_AT_[MIPS_]linkage_name. More...

bool	useGNUTLSOpcode () const
	Returns whether to use DW_OP_GNU_push_tls_address, instead of the standard DW_OP_form_tls_address opcode. More...

bool	useDWARF2Bitfields () const
	Returns whether to use the DWARF2 format for bitfields instyead of the DWARF4 format. More...

bool	useInlineStrings () const
	Returns whether to use inline strings. More...

bool	useRangesSection () const
	Returns whether ranges section should be emitted. More...

bool	useSectionsAsReferences () const
	Returns whether to use sections as labels rather than temp symbols. More...

bool	useLocSection () const
	Returns whether .debug_loc section should be emitted. More...

bool	generateTypeUnits () const
	Returns whether to generate DWARF v4 type units. More...

AccelTableKind	getAccelTableKind () const
	Returns what kind (if any) of accelerator tables to emit. More...

bool	useAppleExtensionAttributes () const

bool	useSplitDwarf () const
	Returns whether or not to change the current debug info for the split dwarf proposal support. More...

bool	useSegmentedStringOffsetsTable () const
	Returns whether to generate a string offsets table with (possibly shared) contributions from each CU and type unit. More...

bool	shareAcrossDWOCUs () const

uint16_t	getDwarfVersion () const
	Returns the Dwarf Version. More...

const DwarfCompileUnit *	getPrevCU () const
	Returns the previous CU that was being updated. More...

void	setPrevCU (const DwarfCompileUnit *PrevCU)

const DebugLocStream &	getDebugLocs () const
	Returns the entries for the .debug_loc section. More...

void	emitDebugLocEntry (ByteStreamer &Streamer, const DebugLocStream::Entry &Entry, const DwarfCompileUnit *CU)
	Emit an entry for the debug loc section. More...

void	emitDebugLocEntryLocation (const DebugLocStream::Entry &Entry, const DwarfCompileUnit *CU)
	Emit the location for a debug loc entry, including the size header. More...

void	addSubprogramNames (const DICompileUnit &CU, const DISubprogram *SP, DIE &Die)

AddressPool &	getAddressPool ()

void	addAccelName (const DICompileUnit &CU, StringRef Name, const DIE &Die)

void	addAccelObjC (const DICompileUnit &CU, StringRef Name, const DIE &Die)

void	addAccelNamespace (const DICompileUnit &CU, StringRef Name, const DIE &Die)

void	addAccelType (const DICompileUnit &CU, StringRef Name, const DIE &Die, char Flags)

const MachineFunction *	getCurrentFunction () const

bool	isLexicalScopeDIENull (LexicalScope *Scope)
	A helper function to check whether the DIE for a given Scope is going to be null. More...

DwarfCompileUnit *	lookupCU (const DIE *Die)
	Find the matching DwarfCompileUnit for the given CU DIE. More...

const DwarfCompileUnit *	lookupCU (const DIE *Die) const

bool	tuneForGDB () const

bool	tuneForLLDB () const

bool	tuneForSCE () const

void	addSectionLabel (const MCSymbol *Sym)

const MCSymbol *	getSectionLabel (const MCSection *S)

Public Member Functions inherited from llvm::DebugHandlerBase
void	endInstruction () override
	Process end of an instruction. More...

void	beginFunction (const MachineFunction *MF) override
	Gather pre-function debug information. More...

void	endFunction (const MachineFunction *MF) override
	Gather post-function debug information. More...

MCSymbol *	getLabelBeforeInsn (const MachineInstr *MI)
	Return Label preceding the instruction. More...

MCSymbol *	getLabelAfterInsn (const MachineInstr *MI)
	Return Label immediately following the instruction. More...

const MCExpr *	getFunctionLocalOffsetAfterInsn (const MachineInstr *MI)
	Return the function-local offset of an instruction. More...

Public Member Functions inherited from llvm::AsmPrinterHandler
virtual	~AsmPrinterHandler ()
	Pin vtable to this file. More...

virtual void	markFunctionEnd ()

virtual void	beginFragment (const MachineBasicBlock *MBB, ExceptionSymbolProvider ESP)

virtual void	endFragment ()

virtual void	beginFunclet (const MachineBasicBlock &MBB, MCSymbol *Sym=nullptr)
	Emit target-specific EH funclet machinery. More...

virtual void	endFunclet ()

Static Public Member Functions
static uint64_t	makeTypeSignature (StringRef Identifier)
	Perform an MD5 checksum of `Identifier` and return the lower 64 bits. More...

static void	emitDebugLocValue (const AsmPrinter &AP, const DIBasicType *BT, const DbgValueLoc &Value, DwarfExpression &DwarfExpr)

Static Public Member Functions inherited from llvm::DebugHandlerBase
static uint64_t	getBaseTypeSize (const DIType *Ty)
	If this type is derived from a base type then return base type size. More...

Protected Member Functions
void	beginFunctionImpl (const MachineFunction *MF) override
	Gather pre-function debug information. More...

void	endFunctionImpl (const MachineFunction *MF) override
	Gather and emit post-function debug information. More...

void	skippedNonDebugFunction () override

Protected Member Functions inherited from llvm::DebugHandlerBase
	DebugHandlerBase (AsmPrinter *A)

void	identifyScopeMarkers ()
	Indentify instructions that are marking the beginning of or ending of a scope. More...

void	requestLabelBeforeInsn (const MachineInstr *MI)
	Ensure that a label will be emitted before MI. More...

void	requestLabelAfterInsn (const MachineInstr *MI)
	Ensure that a label will be emitted after MI. More...

Friends
class	NonTypeUnitContext

Additional Inherited Members
Protected Attributes inherited from llvm::DebugHandlerBase
AsmPrinter *	Asm
	Target of debug info emission. More...

MachineModuleInfo *	MMI
	Collected machine module information. More...

DebugLoc	PrevInstLoc
	Previous instruction's location information. More...

MCSymbol *	PrevLabel = nullptr

const MachineBasicBlock *	PrevInstBB = nullptr

DebugLoc	PrologEndLoc
	This location indicates end of function prologue and beginning of function body. More...

const MachineInstr *	CurMI = nullptr
	If nonnull, stores the current machine instruction we're processing. More...

LexicalScopes	LScopes

DbgValueHistoryMap	DbgValues
	History of DBG_VALUE and clobber instructions for each user variable. More...

DbgLabelInstrMap	DbgLabels
	Mapping of inlined labels and DBG_LABEL machine instruction. More...

DenseMap< const MachineInstr , MCSymbol >	LabelsBeforeInsn
	Maps instruction with label emitted before instruction. More...

DenseMap< const MachineInstr , MCSymbol >	LabelsAfterInsn
	Maps instruction with label emitted after instruction. More...

Detailed Description

Collects and handles dwarf debug information.

Definition at line 274 of file DwarfDebug.h.

Constructor & Destructor Documentation

◆ DwarfDebug()

DwarfDebug::DwarfDebug	(	AsmPrinter *	A,
		Module *	M
	)

◆ ~DwarfDebug()

DwarfDebug::~DwarfDebug ( )

overridedefault

Referenced by DwarfDebug().

Member Function Documentation

◆ addAccelName()

void DwarfDebug::addAccelName	(	const DICompileUnit &	CU,
		StringRef	Name,
		const DIE &	Die
	)

Definition at line 2856 of file DwarfDebug.cpp.

Referenced by llvm::DwarfCompileUnit::addLocationAttribute(), and addSubprogramNames().

◆ addAccelNamespace()

void DwarfDebug::addAccelNamespace	(	const DICompileUnit &	CU,
		StringRef	Name,
		const DIE &	Die
	)

Definition at line 2868 of file DwarfDebug.cpp.

Referenced by llvm::DwarfUnit::getOrCreateNameSpace().

◆ addAccelObjC()

void DwarfDebug::addAccelObjC	(	const DICompileUnit &	CU,
		StringRef	Name,
		const DIE &	Die
	)

Definition at line 2861 of file DwarfDebug.cpp.

References llvm::Apple, and getAccelTableKind().

Referenced by addSubprogramNames().

◆ addAccelType()

void DwarfDebug::addAccelType	(	const DICompileUnit &	CU,
		StringRef	Name,
		const DIE &	Die,
		char	Flags
	)

Definition at line 2873 of file DwarfDebug.cpp.

Referenced by llvm::DwarfUnit::applySubprogramAttributes(), and llvm::DwarfUnit::getOrCreateTypeDIE().

◆ addArangeLabel()

void llvm::DwarfDebug::addArangeLabel ( SymbolCU SCU )

inline

Add a label so that arange data can be generated for it.

Definition at line 619 of file DwarfDebug.h.

Referenced by llvm::DwarfCompileUnit::addLabelAddress(), llvm::DwarfCompileUnit::addLocalLabelAddress(), and llvm::DwarfCompileUnit::addLocationAttribute().

◆ addDwarfTypeUnitType()

void DwarfDebug::addDwarfTypeUnitType	(	DwarfCompileUnit &	CU,
		StringRef	Identifier,
		DIE &	Die,
		const DICompositeType *	CTy
	)

Add a DIE to the set of types that we're going to pull into type units.

Definition at line 2722 of file DwarfDebug.cpp.

References llvm::DwarfUnit::addDIETypeSignature(), llvm::DebugHandlerBase::Asm, assert(), getDwarfVersion(), llvm::DIE::getUnitDie(), llvm::AddressPool::hasBeenUsed(), llvm::MipsISD::Ins, makeTypeSignature(), useSegmentedStringOffsetsTable(), and useSplitDwarf().

Referenced by llvm::DwarfUnit::createTypeDIE().

◆ addSectionLabel()

void DwarfDebug::addSectionLabel ( const MCSymbol * Sym )

Definition at line 2882 of file DwarfDebug.cpp.

References llvm::MCSymbol::getSection().

Referenced by llvm::DwarfCompileUnit::addRange().

◆ addSubprogramNames()

void DwarfDebug::addSubprogramNames	(	const DICompileUnit &	CU,
		const DISubprogram *	SP,
		DIE &	Die
	)

Definition at line 467 of file DwarfDebug.cpp.

References addAccelName(), addAccelObjC(), llvm::Apple, llvm::DwarfFile::getAbstractSPDies(), getAccelTableKind(), llvm::DIScope::getName(), llvm::DICompileUnit::getNameTableKind(), getObjCClassCategory(), getObjCMethodName(), isObjCClass(), llvm::DICompileUnit::None, and useAllLinkageNames().

Referenced by llvm::DwarfCompileUnit::constructInlinedScopeDIE(), and llvm::DwarfCompileUnit::updateSubprogramScopeDIE().

◆ beginFunctionImpl()

void DwarfDebug::beginFunctionImpl ( const MachineFunction * MF )

overrideprotectedvirtual

Gather pre-function debug information.

Implements llvm::DebugHandlerBase.

Definition at line 1602 of file DwarfDebug.cpp.

References llvm::DebugHandlerBase::Asm, assert(), emitInitialLocDirective(), llvm::LexicalScopes::empty(), llvm::LexicalScopes::getCurrentFunctionScope(), llvm::MachineFunction::getFunction(), llvm::LexicalScope::getScopeNode(), llvm::Function::getSubprogram(), llvm::DwarfCompileUnit::getUniqueID(), llvm::DebugHandlerBase::LScopes, llvm::DICompileUnit::NoDebug, llvm::AsmPrinter::OutStreamer, and llvm::DebugHandlerBase::PrologEndLoc.

◆ beginInstruction()

void DwarfDebug::beginInstruction ( const MachineInstr * MI )

overridevirtual

Process beginning of an instruction.

Reimplemented from llvm::DebugHandlerBase.

Definition at line 1456 of file DwarfDebug.cpp.

References llvm::DebugHandlerBase::Asm, assert(), llvm::DebugHandlerBase::beginInstruction(), llvm::DebugHandlerBase::CurMI, DWARF2_FLAG_IS_STMT, DWARF2_FLAG_PROLOGUE_END, llvm::Enable, llvm::MachineInstr::FrameSetup, llvm::DebugLoc::getCol(), llvm::MachineInstr::getDebugLoc(), llvm::MachineInstr::getFlag(), llvm::MachineFunction::getFunction(), llvm::DebugLoc::getLine(), llvm::MachineInstr::getMF(), llvm::MachineInstr::getParent(), llvm::DebugLoc::getScope(), llvm::Function::getSubprogram(), llvm::MachineInstr::hasDelaySlot(), llvm::MachineInstr::isCall(), llvm::MachineInstr::isMetaInstruction(), llvm::DICompileUnit::NoDebug, llvm::AsmPrinter::OutStreamer, llvm::DebugHandlerBase::PrevInstBB, llvm::DebugHandlerBase::PrevInstLoc, llvm::DebugHandlerBase::PrevLabel, llvm::DebugHandlerBase::PrologEndLoc, and llvm::DebugHandlerBase::requestLabelAfterInsn().

◆ beginModule()

void DwarfDebug::beginModule ( )

Emit all Dwarf sections that should come prior to the content.

Definition at line 757 of file DwarfDebug.cpp.

References llvm::DwarfUnit::addString(), llvm::DwarfUnit::addUInt(), llvm::any_of(), llvm::DebugHandlerBase::Asm, assert(), llvm::DIE::children(), llvm::DIEHash::computeCUSignature(), llvm::DwarfFile::computeSizeAndOffsets(), llvm::DwarfUnit::constructContainingTypeDIEs(), llvm::AsmPrinter::createTempSymbol(), llvm::Module::debug_compile_units(), llvm::Module::debug_compile_units_begin(), llvm::Module::debug_compile_units_end(), DisableDebugInfoPrinting, llvm::empty(), llvm::DwarfCompileUnit::finishEntityDefinition(), llvm::DwarfCompileUnit::finishSubprogramDefinition(), for(), forBothCUs(), llvm::MCSection::getBeginSymbol(), llvm::DwarfUnit::getCUNode(), llvm::MCObjectFileInfo::getDwarfMacinfoSection(), llvm::MCObjectFileInfo::getDwarfRangesSection(), getDwarfVersion(), llvm::DebugLocStream::getLists(), llvm::MachineModuleInfo::getModule(), llvm::AsmPrinter::getObjFileLowering(), llvm::DwarfCompileUnit::getOrCreateGlobalVariableDIE(), llvm::DwarfUnit::getOrCreateTypeDIE(), llvm::DwarfFile::getRangeLists(), llvm::DwarfCompileUnit::getRanges(), llvm::DwarfCompileUnit::getSkeleton(), llvm::DIE::getUnitDie(), llvm::DIEUnit::getUnitDie(), llvm::Module::globals(), llvm::MachineModuleInfo::hasDebugInfo(), llvm::ARM_PROC::IE, llvm::detail::DenseSetImpl< ValueT, DenseMap< ValueT, detail::DenseSetEmpty, ValueInfoT, detail::DenseSetPair< ValueT > >, ValueInfoT >::insert(), llvm::DICompileUnit::isDebugDirectivesOnly(), llvm::AddressPool::isEmpty(), llvm::TargetOptions::MCOptions, llvm::DebugHandlerBase::MMI, llvm::DICompileUnit::NoDebug, llvm::TargetMachine::Options, P, llvm::MachineModuleInfo::setDebugInfoAvailability(), llvm::DwarfCompileUnit::setDWOId(), llvm::AddressPool::setLabel(), llvm::DwarfFile::setLoclistsTableBaseSym(), llvm::DwarfFile::setRnglistsTableBaseSym(), sortGlobalExprs(), llvm::MCTargetOptions::SplitDwarfFile, T, llvm::DwarfCompileUnit::takeRanges(), llvm::TimePassesIsEnabled, llvm::AsmPrinter::TM, useRangesSection(), useSegmentedStringOffsetsTable(), and useSplitDwarf().

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

◆ emitDebugLocEntry()

void DwarfDebug::emitDebugLocEntry	(	ByteStreamer &	Streamer,
		const DebugLocStream::Entry &	Entry,
		const DwarfCompileUnit *	CU
	)

Emit an entry for the debug loc section.

This can be used to handle an entry that's going to be emitted into the debug loc section.

Definition at line 1951 of file DwarfDebug.cpp.

References llvm::DebugLocStream::getComments().

Referenced by emitDebugLocEntryLocation().

◆ emitDebugLocEntryLocation()

void DwarfDebug::emitDebugLocEntryLocation	(	const DebugLocStream::Entry &	Entry,
		const DwarfCompileUnit *	CU
	)

Emit the location for a debug loc entry, including the size header.

Definition at line 2066 of file DwarfDebug.cpp.

References llvm::DebugHandlerBase::Asm, emitDebugLocEntry(), llvm::AsmPrinter::emitInt16(), llvm::AsmPrinter::EmitULEB128(), llvm::DebugLocStream::getBytes(), getDwarfVersion(), llvm::max(), and llvm::AsmPrinter::OutStreamer.

Referenced by emitLoclistsTableHeader().

◆ emitDebugLocValue()

void DwarfDebug::emitDebugLocValue	(	const AsmPrinter &	AP,
		const DIBasicType *	BT,
		const DbgValueLoc &	Value,
		DwarfExpression &	DwarfExpr
	)

static

Definition at line 2002 of file DwarfDebug.cpp.

References llvm::DwarfExpression::addEntryValueExpression(), llvm::DwarfExpression::addExpression(), llvm::DwarfExpression::addFragmentOffset(), llvm::DwarfExpression::addMachineRegExpression(), llvm::DwarfExpression::addSignedConstant(), llvm::DwarfExpression::addUnsignedConstant(), llvm::APFloat::bitcastToAPInt(), llvm::DbgValueLoc::getConstantFP(), llvm::DIBasicType::getEncoding(), llvm::DbgValueLoc::getExpression(), llvm::DbgValueLoc::getInt(), llvm::DbgValueLoc::getLoc(), llvm::MachineLocation::getReg(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MachineFunction::getSubtarget(), llvm::ConstantFP::getValueAPF(), llvm::DbgValueLoc::isConstantFP(), llvm::MachineLocation::isIndirect(), llvm::DbgValueLoc::isInt(), llvm::DbgValueLoc::isLocation(), llvm::AsmPrinter::MF, llvm::DwarfExpression::setEntryValueFlag(), and llvm::DwarfExpression::setMemoryLocationKind().

◆ emitInitialLocDirective()

DebugLoc DwarfDebug::emitInitialLocDirective	(	const MachineFunction &	MF,
		unsigned	CUID
	)

Emits inital debug location directive.

Definition at line 1582 of file DwarfDebug.cpp.

References llvm::DebugHandlerBase::Asm, DWARF2_FLAG_IS_STMT, findPrologueEndLoc(), getDwarfVersion(), llvm::MachineFunction::getFunction(), llvm::Function::getSubprogram(), and llvm::DebugHandlerBase::PrologEndLoc.

Referenced by beginFunctionImpl(), and llvm::AsmPrinter::emitInitialRawDwarfLocDirective().

◆ endFunctionImpl()

void DwarfDebug::endFunctionImpl ( const MachineFunction * MF )

overrideprotectedvirtual

Gather and emit post-function debug information.

Implements llvm::DebugHandlerBase.

Definition at line 1635 of file DwarfDebug.cpp.

References llvm::DebugHandlerBase::Asm, assert(), llvm::DwarfFile::emitAbbrevs(), llvm::emitAppleAccelTable(), llvm::emitDWARF5AccelTable(), llvm::DwarfStringPool::emitStringOffsetsTableHeader(), llvm::DwarfFile::emitUnits(), llvm::empty(), llvm::LexicalScopes::getAbstractScopesList(), llvm::MCSection::getBeginSymbol(), llvm::LexicalScopes::getCurrentFunctionScope(), llvm::MCObjectFileInfo::getDwarfAbbrevSection(), llvm::MCObjectFileInfo::getDwarfAccelNamespaceSection(), llvm::MCObjectFileInfo::getDwarfAccelNamesSection(), llvm::MCObjectFileInfo::getDwarfAccelObjCSection(), llvm::MCObjectFileInfo::getDwarfAccelTypesSection(), llvm::MCObjectFileInfo::getDwarfStrOffSection(), getDwarfVersion(), llvm::MachineFunction::getFunction(), llvm::AsmPrinter::getFunctionBegin(), llvm::AsmPrinter::getFunctionEnd(), llvm::AsmPrinter::getObjFileLowering(), llvm::DwarfFile::getScopeLabels(), llvm::LexicalScope::getScopeNode(), llvm::DwarfFile::getScopeVariables(), llvm::DwarfFile::getStringOffsetsStartSym(), llvm::DwarfFile::getStringPool(), llvm::Function::getSubprogram(), llvm::detail::DenseSetImpl< ValueT, DenseMap< ValueT, detail::DenseSetEmpty, ValueInfoT, detail::DenseSetPair< ValueT > >, ValueInfoT >::insert(), llvm::DICompileUnit::LineTablesOnly, llvm_unreachable, llvm::DebugHandlerBase::LScopes, llvm::AsmPrinter::OutStreamer, llvm::DebugHandlerBase::PrevLabel, llvm::ARMBuildAttrs::Section, and useSplitDwarf().

◆ endModule()

void DwarfDebug::endModule ( )

overridevirtual

Emit all Dwarf sections that should come after the content.

Implements llvm::AsmPrinterHandler.

Definition at line 993 of file DwarfDebug.cpp.

References llvm::Apple, assert(), llvm::DwarfCompileUnit::createBaseTypeDIEs(), llvm::DebugHandlerBase::CurMI, llvm::Default, llvm::Dwarf, GenerateARangeSection, getAccelTableKind(), llvm::MachineModuleInfo::hasDebugInfo(), llvm_unreachable, llvm::DebugHandlerBase::MMI, llvm::None, P, and useSplitDwarf().

◆ enterNonTypeUnitContext()

DwarfDebug::NonTypeUnitContext DwarfDebug::enterNonTypeUnitContext ( )

Definition at line 2820 of file DwarfDebug.cpp.

References llvm::AccelTable< DataT >::addName(), llvm::Apple, llvm::DebugHandlerBase::Asm, llvm::Default, llvm::DICompileUnit::Default, llvm::Dwarf, getAccelTableKind(), llvm::DwarfStringPool::getEntry(), llvm::DICompileUnit::getNameTableKind(), llvm::DwarfFile::getStringPool(), llvm_unreachable, llvm::None, NonTypeUnitContext, llvm::Ref, and useSplitDwarf().

Referenced by llvm::DwarfUnit::createTypeDIE().

◆ generateTypeUnits()

bool llvm::DwarfDebug::generateTypeUnits ( ) const

inline

Returns whether to generate DWARF v4 type units.

Definition at line 654 of file DwarfDebug.h.

Referenced by llvm::DwarfUnit::createTypeDIE(), and llvm::DwarfUnit::isShareableAcrossCUs().

◆ getAccelTableKind()

AccelTableKind llvm::DwarfDebug::getAccelTableKind ( ) const

inline

Returns what kind (if any) of accelerator tables to emit.

Definition at line 659 of file DwarfDebug.h.

Referenced by addAccelObjC(), addSubprogramNames(), endModule(), enterNonTypeUnitContext(), and llvm::DwarfCompileUnit::hasDwarfPubSections().

◆ getAddressPool()

AddressPool& llvm::DwarfDebug::getAddressPool ( )

inline

Definition at line 704 of file DwarfDebug.h.

Referenced by llvm::DwarfCompileUnit::addAddrTableBase(), llvm::DwarfCompileUnit::addLabelAddress(), llvm::DwarfCompileUnit::addLocationAttribute(), llvm::DwarfUnit::addOpAddress(), and emitRangeList().

◆ getCurrentFunction()

const MachineFunction* llvm::DwarfDebug::getCurrentFunction ( ) const

inline

Definition at line 716 of file DwarfDebug.h.

Referenced by llvm::DwarfCompileUnit::updateSubprogramScopeDIE().

◆ getDebugLocs()

const DebugLocStream& llvm::DwarfDebug::getDebugLocs ( ) const

inline

Returns the entries for the .debug_loc section.

Definition at line 689 of file DwarfDebug.h.

Referenced by llvm::DIELocList::EmitValue().

◆ getDwarfVersion()

uint16_t DwarfDebug::getDwarfVersion ( ) const

Returns the Dwarf Version.

Definition at line 2878 of file DwarfDebug.cpp.

References llvm::DebugHandlerBase::Asm, and llvm::AsmPrinter::OutStreamer.

Referenced by llvm::DwarfUnit::addBlock(), addDwarfTypeUnitType(), llvm::DwarfUnit::addFlag(), llvm::DwarfCompileUnit::addLabelAddress(), llvm::DwarfUnit::addLinkageName(), llvm::DwarfCompileUnit::addLocationList(), llvm::DwarfUnit::addLoclistsBase(), llvm::DwarfUnit::addOpAddress(), llvm::DwarfUnit::addRnglistsBase(), llvm::DwarfCompileUnit::addScopeRangeList(), llvm::DwarfUnit::addSectionDelta(), llvm::DwarfUnit::addSectionLabel(), llvm::DwarfUnit::addSectionOffset(), beginModule(), llvm::DwarfUnit::constructContainingTypeDIEs(), llvm::DwarfCompileUnit::constructInlinedScopeDIE(), llvm::DwarfUnit::emitCommonHeader(), emitDebugLocEntryLocation(), emitDebugRangesImpl(), llvm::DwarfCompileUnit::emitHeader(), emitInitialLocDirective(), emitLoclistsTableHeader(), emitRangeList(), endFunctionImpl(), llvm::DwarfUnit::getDwarfVersion(), llvm::DwarfCompileUnit::getHeaderSize(), llvm::DwarfUnit::getHeaderSize(), llvm::DwarfUnit::getMD5AsBytes(), llvm::DwarfUnit::getOrCreateTypeDIE(), llvm::DwarfCompileUnit::hasDwarfPubSections(), hasVectorBeenPadded(), and llvm::DwarfUnit::~DwarfUnit().

◆ getPrevCU()

const DwarfCompileUnit* llvm::DwarfDebug::getPrevCU ( ) const

inline

Returns the previous CU that was being updated.

Definition at line 685 of file DwarfDebug.h.

Referenced by llvm::DwarfCompileUnit::addRange().

◆ getSectionLabel()

const MCSymbol * DwarfDebug::getSectionLabel ( const MCSection * S )

Definition at line 2886 of file DwarfDebug.cpp.

Referenced by emitRangeList().

◆ isLexicalScopeDIENull()

bool DwarfDebug::isLexicalScopeDIENull ( LexicalScope * Scope )

A helper function to check whether the DIE for a given Scope is going to be null.

Check whether we should create a DIE for the given Scope, return true if we don't create a DIE (the corresponding DIE is null).

Definition at line 501 of file DwarfDebug.cpp.

References llvm::SmallVectorBase::empty(), llvm::SmallVectorTemplateCommon< T, typename >::front(), llvm::DebugHandlerBase::getLabelAfterInsn(), llvm::LexicalScope::getRanges(), llvm::LexicalScope::isAbstractScope(), and llvm::SmallVectorBase::size().

Referenced by llvm::DwarfCompileUnit::constructLexicalScopeDIE(), and llvm::DwarfCompileUnit::constructScopeDIE().

◆ lookupCU() [1/2]

DwarfCompileUnit* llvm::DwarfDebug::lookupCU ( const DIE * Die )

inline

Find the matching DwarfCompileUnit for the given CU DIE.

Definition at line 723 of file DwarfDebug.h.

References llvm::DenseMapBase< DenseMap< KeyT, ValueT, KeyInfoT, BucketT >, KeyT, ValueT, KeyInfoT, BucketT >::lookup().

Referenced by llvm::DwarfCompileUnit::constructAbstractSubprogramScopeDIE().

◆ lookupCU() [2/2]

const DwarfCompileUnit* llvm::DwarfDebug::lookupCU ( const DIE * Die ) const

inline

Definition at line 724 of file DwarfDebug.h.

References llvm::DenseMapBase< DenseMap< KeyT, ValueT, KeyInfoT, BucketT >, KeyT, ValueT, KeyInfoT, BucketT >::lookup().

◆ makeTypeSignature()

uint64_t DwarfDebug::makeTypeSignature ( StringRef Identifier )

static

Perform an MD5 checksum of Identifier and return the lower 64 bits.

Definition at line 2711 of file DwarfDebug.cpp.

References llvm::MD5::final(), llvm::MD5::MD5Result::high(), and llvm::MD5::update().

Referenced by addDwarfTypeUnitType().

◆ setPrevCU()

void llvm::DwarfDebug::setPrevCU ( const DwarfCompileUnit * PrevCU )

inline

Definition at line 686 of file DwarfDebug.h.

Referenced by llvm::DwarfCompileUnit::addRange().

◆ setSymbolSize()

void llvm::DwarfDebug::setSymbolSize	(	const MCSymbol *	Sym,
		uint64_t	Size
	)

inlineoverridevirtual

For symbols that have a size designated (e.g.

common symbols), this tracks that size.

Implements llvm::AsmPrinterHandler.

Definition at line 623 of file DwarfDebug.h.

References Size.

◆ shareAcrossDWOCUs()

bool DwarfDebug::shareAcrossDWOCUs ( ) const

Definition at line 525 of file DwarfDebug.cpp.

References llvm::DIE::addChild(), llvm::DwarfUnit::addFlag(), llvm::DwarfUnit::addString(), llvm::DwarfUnit::addStringOffsetsStart(), llvm::DwarfUnit::addUInt(), llvm::DwarfFile::addUnit(), llvm::DebugHandlerBase::Asm, assert(), llvm::DwarfCompileUnit::constructAbstractSubprogramScopeDIE(), llvm::DwarfCompileUnit::constructCallSiteEntryDIE(), llvm::DwarfCompileUnit::constructImportedEntityDIE(), D, llvm::dbgs(), llvm::dyn_cast(), llvm::StringRef::empty(), llvm::DIScope::getDirectory(), llvm::DICompileUnit::getDWOId(), llvm::DIScope::getFile(), llvm::DIScope::getFilename(), llvm::DICompileUnit::getFlags(), llvm::DebugHandlerBase::getFunctionLocalOffsetAfterInsn(), llvm::MachineOperand::getGlobal(), llvm::DICompileUnit::getImportedEntities(), llvm::LexicalScope::getInlinedAt(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::Value::getName(), llvm::DwarfUnit::getOrCreateContextDIE(), llvm::DICompileUnit::getProducer(), llvm::DICompileUnit::getRetainedTypes(), llvm::DICompileUnit::getRuntimeVersion(), llvm::DIImportedEntity::getScope(), llvm::LexicalScope::getScopeNode(), llvm::DIScope::getSource(), llvm::DICompileUnit::getSourceLanguage(), llvm::DICompileUnit::getSplitDebugFilename(), llvm::Function::getSubprogram(), llvm::MachineFunction::getSubtarget(), llvm::DIEUnit::getUnitDie(), llvm::DwarfFile::getUnits(), llvm::DwarfCompileUnit::hasDwarfPubSections(), llvm::ARM_PROC::IE, llvm::DwarfCompileUnit::initStmtList(), llvm::LexicalScope::isAbstractScope(), llvm::MachineOperand::isGlobal(), llvm::DICompileUnit::isOptimized(), llvm::TargetInstrInfo::isTailCall(), LLVM_DEBUG, MI, N, SplitDwarfCrossCuReferences, llvm::StringRef::str(), TII, useAppleExtensionAttributes(), useSegmentedStringOffsetsTable(), and useSplitDwarf().

Referenced by llvm::DwarfUnit::isShareableAcrossCUs().

◆ skippedNonDebugFunction()

void DwarfDebug::skippedNonDebugFunction ( )

overrideprotectedvirtual

Reimplemented from llvm::DebugHandlerBase.

Definition at line 1626 of file DwarfDebug.cpp.

◆ useAllLinkageNames()

bool llvm::DwarfDebug::useAllLinkageNames ( ) const

inline

Returns whether we should emit all DW_AT_[MIPS_]linkage_name.

If not, we still might emit certain cases.

Definition at line 629 of file DwarfDebug.h.

Referenced by llvm::DwarfCompileUnit::addLocationAttribute(), addSubprogramNames(), and llvm::DwarfUnit::applySubprogramDefinitionAttributes().

◆ useAppleExtensionAttributes()

bool llvm::DwarfDebug::useAppleExtensionAttributes ( ) const

inline

Definition at line 661 of file DwarfDebug.h.

Referenced by llvm::DwarfUnit::applySubprogramAttributes(), shareAcrossDWOCUs(), and llvm::DwarfCompileUnit::updateSubprogramScopeDIE().

◆ useDWARF2Bitfields()

bool llvm::DwarfDebug::useDWARF2Bitfields ( ) const

inline

Returns whether to use the DWARF2 format for bitfields instyead of the DWARF4 format.

Definition at line 637 of file DwarfDebug.h.

Referenced by llvm::DwarfUnit::constructContainingTypeDIEs().

◆ useGNUTLSOpcode()

bool llvm::DwarfDebug::useGNUTLSOpcode ( ) const

inline

Returns whether to use DW_OP_GNU_push_tls_address, instead of the standard DW_OP_form_tls_address opcode.

Definition at line 633 of file DwarfDebug.h.

Referenced by llvm::DwarfCompileUnit::addLocationAttribute().

◆ useInlineStrings()

bool llvm::DwarfDebug::useInlineStrings ( ) const

inline

Returns whether to use inline strings.

Definition at line 640 of file DwarfDebug.h.

Referenced by llvm::DwarfUnit::addString().

◆ useLocSection()

bool llvm::DwarfDebug::useLocSection ( ) const

inline

Returns whether .debug_loc section should be emitted.

Definition at line 651 of file DwarfDebug.h.

◆ useRangesSection()

bool llvm::DwarfDebug::useRangesSection ( ) const

inline

Returns whether ranges section should be emitted.

Definition at line 643 of file DwarfDebug.h.

Referenced by llvm::DwarfCompileUnit::attachRangesOrLowHighPC(), beginModule(), and emitDebugRangesImpl().

◆ useSectionsAsReferences()

bool llvm::DwarfDebug::useSectionsAsReferences ( ) const

inline

Returns whether to use sections as labels rather than temp symbols.

Definition at line 646 of file DwarfDebug.h.

Referenced by computeIndexValue(), llvm::DwarfUnit::emitCommonHeader(), llvm::DwarfCompileUnit::emitHeader(), and llvm::DwarfCompileUnit::initStmtList().

◆ useSegmentedStringOffsetsTable()

bool llvm::DwarfDebug::useSegmentedStringOffsetsTable ( ) const

inline

Returns whether to generate a string offsets table with (possibly shared) contributions from each CU and type unit.

This implies the use of DW_FORM_strx* indirect references with DWARF v5 and beyond. Note that DW_FORM_GNU_str_index is also an indirect reference, but it is used with a pre-DWARF v5 implementation of split DWARF sections, which uses a monolithic string offsets table.

Definition at line 675 of file DwarfDebug.h.

Referenced by addDwarfTypeUnitType(), beginModule(), computeIndexValue(), emitDebugRangesImpl(), shareAcrossDWOCUs(), and llvm::DwarfUnit::useSegmentedStringOffsetsTable().

◆ useSplitDwarf()

bool llvm::DwarfDebug::useSplitDwarf ( ) const

inline

Returns whether or not to change the current debug info for the split dwarf proposal support.

Definition at line 667 of file DwarfDebug.h.

Referenced by addDwarfTypeUnitType(), llvm::DwarfCompileUnit::addLabelAddress(), llvm::DwarfCompileUnit::addLocationAttribute(), llvm::DwarfUnit::addOpAddress(), llvm::DwarfUnit::addSectionLabel(), llvm::DwarfCompileUnit::applySubprogramAttributesToDefinition(), beginModule(), computeIndexValue(), emitDebugRangesImpl(), llvm::emitDWARF5AccelTable(), llvm::DwarfCompileUnit::emitHeader(), llvm::DwarfTypeUnit::emitHeader(), emitLoclistsTableHeader(), llvm::DIELocList::EmitValue(), endFunctionImpl(), endModule(), enterNonTypeUnitContext(), llvm::DwarfCompileUnit::getHeaderSize(), llvm::DwarfCompileUnit::includeMinimalInlineScopes(), and shareAcrossDWOCUs().

Friends And Related Function Documentation

◆ NonTypeUnitContext

friend class NonTypeUnitContext

friend

Definition at line 605 of file DwarfDebug.h.

Referenced by enterNonTypeUnitContext().

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

lib/CodeGen/AsmPrinter/DwarfDebug.h
lib/CodeGen/AsmPrinter/DwarfDebug.cpp

Classes

Public Member Functions

Static Public Member Functions

Protected Member Functions

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ DwarfDebug()

◆ ~DwarfDebug()

Member Function Documentation

◆ addAccelName()

◆ addAccelNamespace()

◆ addAccelObjC()

◆ addAccelType()

◆ addArangeLabel()

◆ addDwarfTypeUnitType()

◆ addSectionLabel()

◆ addSubprogramNames()

◆ beginFunctionImpl()

◆ beginInstruction()

◆ beginModule()

◆ emitDebugLocEntry()

◆ emitDebugLocEntryLocation()

◆ emitDebugLocValue()

◆ emitInitialLocDirective()

◆ endFunctionImpl()

◆ endModule()

◆ enterNonTypeUnitContext()

◆ generateTypeUnits()

◆ getAccelTableKind()

◆ getAddressPool()

◆ getCurrentFunction()

◆ getDebugLocs()

◆ getDwarfVersion()

◆ getPrevCU()

◆ getSectionLabel()

◆ isLexicalScopeDIENull()

◆ lookupCU() [1/2]

◆ lookupCU() [2/2]

◆ makeTypeSignature()

◆ setPrevCU()

◆ setSymbolSize()

◆ shareAcrossDWOCUs()

◆ skippedNonDebugFunction()

◆ useAllLinkageNames()

◆ useAppleExtensionAttributes()

◆ useDWARF2Bitfields()

◆ useGNUTLSOpcode()

◆ useInlineStrings()

◆ useLocSection()

◆ useRangesSection()

◆ useSectionsAsReferences()

◆ useSegmentedStringOffsetsTable()

◆ useSplitDwarf()

Friends And Related Function Documentation

◆ NonTypeUnitContext