Stores all information related to a compile unit, be it in its original instance of the object file or its brand new cloned and generated DIE tree. More...

#include "DWARFLinker/Parallel/DWARFLinkerCompileUnit.h"

Inheritance diagram for llvm::dwarf_linker::parallel::CompileUnit:

[legend]

Classes
struct	DIEInfo
	Information gathered about source DIEs. More...

class	OutputUnitVariantPtr
	Output unit selector. More...

Public Types
enum class	Stage : uint8_t { CreatedNotLoaded = 0 , Loaded , LivenessAnalysisDone , UpdateDependenciesCompleteness , TypeNamesAssigned , Cloned , PatchesUpdated , Cleaned , Skipped }
	The stages of new compile unit processing. More...

enum	DieOutputPlacement : uint8_t { NotSet = 0 , TypeTable = 1 , PlainDwarf = 2 , Both = 3 }
	Kinds of placement for the output die. More...

Public Types inherited from llvm::dwarf_linker::parallel::DwarfUnit
enum class	AccelType : uint8_t { AccelType::None , AccelType::Name , AccelType::Namespace , AccelType::ObjC , AccelType::Type }

Public Member Functions
	CompileUnit (LinkingGlobalData &GlobalData, unsigned ID, StringRef ClangModuleName, DWARFFile &File, OffsetToUnitTy UnitFromOffset, dwarf::FormParams Format, llvm::endianness Endianess)

	CompileUnit (LinkingGlobalData &GlobalData, DWARFUnit &OrigUnit, unsigned ID, StringRef ClangModuleName, DWARFFile &File, OffsetToUnitTy UnitFromOffset, dwarf::FormParams Format, llvm::endianness Endianess)

Stage	getStage () const
	Returns stage of overall processing.

void	setStage (Stage Stage)
	Set stage of overall processing.

void	loadLineTable ()
	Loads unit line table.

StringEntry *	getFileName (unsigned FileIdx, StringPool &GlobalStrings)
	Returns name of the file for the `FileIdx` from the unit`s line table.

const DWARFFile &	getContaingFile () const
	Returns DWARFFile containing this compile unit.

bool	loadInputDIEs ()
	Load DIEs of input compilation unit.

void	maybeResetToLoadedStage ()
	Reset compile units data(results of liveness analysis, clonning) if current stage greater than Stage::Loaded.

void	analyzeImportedModule (const DWARFDebugInfoEntry *DieEntry)
	Collect references to parseable Swift interfaces in imported DW_TAG_module blocks.

void	analyzeDWARFStructure ()
	Navigate DWARF tree and set die properties.

void	cleanupDataAfterClonning ()
	Cleanup unneeded resources after compile unit is cloned.

void	updateDieRefPatchesWithClonedOffsets ()
	After cloning stage the output DIEs offsets are deallocated.

bool	resolveDependenciesAndMarkLiveness (bool InterCUProcessingStarted, std::atomic< bool > &HasNewInterconnectedCUs)
	Search for subprograms and variables referencing live code and discover dependend DIEs.

bool	updateDependenciesCompleteness ()
	Check dependend DIEs for incompatible placement.

void	verifyDependencies ()
	Check DIEs to have a consistent marking(keep marking, placement marking).

Error	assignTypeNames (TypePool &TypePoolRef)
	Search for type entries and assign names.

DIEInfo &	getDIEInfo (unsigned Idx)
	`Idx` index of the DIE.

const DIEInfo &	getDIEInfo (unsigned Idx) const
	`Idx` index of the DIE.

DIEInfo &	getDIEInfo (const DWARFDebugInfoEntry *Entry)
	`Idx` index of the DIE.

const DIEInfo &	getDIEInfo (const DWARFDebugInfoEntry *Entry) const
	`Idx` index of the DIE.

DIEInfo &	getDIEInfo (const DWARFDie &Die)
	`Die`

const DIEInfo &	getDIEInfo (const DWARFDie &Die) const
	`Die`

uint64_t	getDieOutOffset (uint32_t Idx)
	`Idx` index of the DIE.

TypeEntry *	getDieTypeEntry (uint32_t Idx)
	`Idx` index of the DIE.

uint64_t	getDieOutOffset (const DWARFDebugInfoEntry *InputDieEntry)
	`InputDieEntry` debug info entry.

TypeEntry *	getDieTypeEntry (const DWARFDebugInfoEntry *InputDieEntry)
	`InputDieEntry` debug info entry.

void	rememberDieOutOffset (uint32_t Idx, uint64_t Offset)
	`Idx` index of the DIE.

void	setDieTypeEntry (uint32_t Idx, TypeEntry *Entry)
	`Idx` index of the DIE.

void	setDieTypeEntry (const DWARFDebugInfoEntry InputDieEntry, TypeEntry Entry)
	`InputDieEntry` debug info entry.

std::optional< uint64_t >	getLowPc () const
	Returns value of DW_AT_low_pc attribute.

uint64_t	getHighPc () const
	Returns value of DW_AT_high_pc attribute.

bool	hasLabelAt (uint64_t Addr) const
	Returns true if there is a label corresponding to the specified `Addr`.

void	addLabelLowPc (uint64_t LabelLowPc, int64_t PcOffset)
	Add the low_pc of a label that is relocated by applying offset `PCOffset`.

std::optional< UnitEntryPairTy >	resolveDIEReference (const DWARFFormValue &RefValue, ResolveInterCUReferencesMode CanResolveInterCUReferences)
	Resolve the DIE attribute reference that has been extracted in `RefValue`.

std::optional< UnitEntryPairTy >	resolveDIEReference (const DWARFDebugInfoEntry *DieEntry, dwarf::Attribute Attr, ResolveInterCUReferencesMode CanResolveInterCUReferences)

void	addFunctionRange (uint64_t LowPC, uint64_t HighPC, int64_t PCOffset)
	Add a function range [`LowPC`, `HighPC`) that is relocated by applying offset `PCOffset`.

const RangesTy &	getFunctionRanges () const
	Returns function ranges of this unit.

Error	cloneAndEmit (std::optional< std::reference_wrapper< const Triple > > TargetTriple, TypeUnit *ArtificialTypeUnit)
	Clone and emit this compilation unit.

Error	cloneAndEmitDebugLocations ()
	Clone and emit debug locations(.debug_loc/.debug_loclists).

Error	cloneAndEmitRanges ()
	Clone and emit ranges.

Error	cloneAndEmitDebugMacro ()
	Clone and emit debug macros(.debug_macinfo/.debug_macro).

std::pair< DIE , TypeEntry >	cloneDIE (const DWARFDebugInfoEntry InputDieEntry, TypeEntry ClonedParentTypeDIE, uint64_t OutOffset, std::optional< int64_t > FuncAddressAdjustment, std::optional< int64_t > VarAddressAdjustment, BumpPtrAllocator &Allocator, TypeUnit *ArtificialTypeUnit)

Error	cloneAndEmitLineTable (const Triple &TargetTriple)

void	cloneDieAttrExpression (const DWARFExpression &InputExpression, SmallVectorImpl< uint8_t > &OutputExpression, SectionDescriptor &Section, std::optional< int64_t > VarAddressAdjustment, OffsetsPtrVector &PatchesOffsets)
	Clone attribute location axpression.

uint64_t	getDebugAddrIndex (uint64_t Addr)
	Returns index(inside .debug_addr) of an address.

std::optional< std::pair< StringRef, StringRef > >	getDirAndFilenameFromLineTable (const DWARFFormValue &FileIdxValue)
	Returns directory and file from the line table by index.

std::optional< std::pair< StringRef, StringRef > >	getDirAndFilenameFromLineTable (uint64_t FileIdx)
	Returns directory and file from the line table by index.

DWARFUnit &	getOrigUnit () const
	Returns paired compile unit from input DWARF.

const DWARFDebugInfoEntry *	getFirstChildEntry (const DWARFDebugInfoEntry *Die) const

const DWARFDebugInfoEntry *	getSiblingEntry (const DWARFDebugInfoEntry *Die) const

DWARFDie	getParent (const DWARFDebugInfoEntry *Die)

DWARFDie	getDIEAtIndex (unsigned Index)

const DWARFDebugInfoEntry *	getDebugInfoEntry (unsigned Index) const

DWARFDie	getUnitDIE (bool ExtractUnitDIEOnly=true)

DWARFDie	getDIE (const DWARFDebugInfoEntry *Die)

uint32_t	getDIEIndex (const DWARFDebugInfoEntry *Die) const

uint32_t	getDIEIndex (const DWARFDie &Die) const

std::optional< DWARFFormValue >	find (uint32_t DieIdx, ArrayRef< dwarf::Attribute > Attrs) const

std::optional< DWARFFormValue >	find (const DWARFDebugInfoEntry *Die, ArrayRef< dwarf::Attribute > Attrs) const

std::optional< uint32_t >	getDIEIndexForOffset (uint64_t Offset)

void	warn (const Twine &Warning, const DWARFDie *DIE=nullptr)

void	warn (Error Warning, const DWARFDie *DIE=nullptr)

void	warn (const Twine &Warning, const DWARFDebugInfoEntry *DieEntry)

void	error (const Twine &Err, const DWARFDie *DIE=nullptr)

void	error (Error Err, const DWARFDie *DIE=nullptr)

void	saveAcceleratorInfo (const DwarfUnit::AccelInfo &Info)
	Save specified accelerator info `Info`.

void	forEachAcceleratorRecord (function_ref< void(AccelInfo &)> Handler) override
	Enumerates all units accelerator records.

Public Member Functions inherited from llvm::dwarf_linker::parallel::DwarfUnit
virtual	~DwarfUnit ()

	DwarfUnit (LinkingGlobalData &GlobalData, unsigned ID, StringRef ClangModuleName)

unsigned	getUniqueID () const
	Unique id of the unit.

uint64_t	getUnitSize () const
	Returns size of this(newly generated) compile unit.

StringRef	getUnitName () const
	Returns this unit name.

StringRef	getSysRoot ()
	Return the DW_AT_LLVM_sysroot of the compile unit or an empty StringRef.

bool	isClangModule () const
	Return true if this compile unit is from Clang module.

const std::string &	getClangModuleName () const
	Return Clang module name;.

LinkingGlobalData &	getGlobalData ()
	Return global data.

bool	isInterconnectedCU () const
	Returns true if unit is inter-connected(it references/referenced by other unit).

void	setInterconnectedCU ()
	Mark this unit as inter-connected(it references/referenced by other unit).

void	assignAbbrev (DIEAbbrev &Abbrev)
	Adds `Abbrev` into unit`s abbreviation table.

const std::vector< std::unique_ptr< DIEAbbrev > > &	getAbbreviations () const
	Returns abbreviations for this compile unit.

DIE *	getOutUnitDIE ()
	Returns output unit DIE.

void	setOutUnitDIE (DIE *UnitDie)
	Set output unit DIE.

dwarf::Tag	getTag () const
	Returns unit DWARF tag.

Error	emitAbbreviations ()

Error	emitDebugInfo (const Triple &TargetTriple)
	Emit .debug_info section for unit DIEs.

Error	emitDebugLine (const Triple &TargetTriple, const DWARFDebugLine::LineTable &OutLineTable)
	Emit .debug_line section.

Error	emitDebugStringOffsetSection ()
	Emit the .debug_str_offsets section for current unit.

void	warn (const Twine &Warning)

void	error (const Twine &Err)

void	emitPubAccelerators ()
	Emit .debug_pubnames and .debug_pubtypes for `Unit`.

virtual void	forEachAcceleratorRecord (function_ref< void(AccelInfo &)> Handler)=0
	Enumerates accelerator data.

virtual uint64_t	getDebugStrIndex (const StringEntry *String)
	Returns index(inside .debug_str_offsets) of specified string.

Public Member Functions inherited from llvm::dwarf_linker::parallel::OutputSections
	OutputSections (LinkingGlobalData &GlobalData)

void	setOutputFormat (dwarf::FormParams Format, llvm::endianness Endianness)
	Sets output format for all keeping sections.

const SectionDescriptor &	getSectionDescriptor (DebugSectionKind SectionKind) const
	Returns descriptor for the specified section of `SectionKind`.

SectionDescriptor &	getSectionDescriptor (DebugSectionKind SectionKind)
	Returns descriptor for the specified section of `SectionKind`.

std::optional< const SectionDescriptor * >	tryGetSectionDescriptor (DebugSectionKind SectionKind) const
	Returns descriptor for the specified section of `SectionKind`.

std::optional< SectionDescriptor * >	tryGetSectionDescriptor (DebugSectionKind SectionKind)
	Returns descriptor for the specified section of `SectionKind`.

SectionDescriptor &	getOrCreateSectionDescriptor (DebugSectionKind SectionKind)
	Returns descriptor for the specified section of `SectionKind`.

void	eraseSections ()
	Erases data of all sections.

void	forEach (function_ref< void(SectionDescriptor &)> Handler)
	Enumerate all sections and call `Handler` for each.

void	forEach (function_ref< void(std::shared_ptr< SectionDescriptor > Section)> Handler)
	Enumerate all sections and call `Handler` for each.

void	assignSectionsOffsetAndAccumulateSize (std::array< uint64_t, SectionKindsNum > &SectionSizesAccumulator)
	Enumerate all sections, for each section set current offset (kept by `SectionSizesAccumulator`), update current offset with section length.

void	applyPatches (SectionDescriptor &Section, StringEntryToDwarfStringPoolEntryMap &DebugStrStrings, StringEntryToDwarfStringPoolEntryMap &DebugLineStrStrings, TypeUnit *TypeUnitPtr)
	Enumerate all sections, for each section apply all section patches.

llvm::endianness	getEndianness () const
	Endiannes for the sections.

uint16_t	getVersion () const
	Return DWARF version.

uint16_t	getDebugInfoHeaderSize () const
	Return size of header of debug_info table.

uint16_t	getDebugAddrHeaderSize () const
	Return size of header of debug_ table.

uint16_t	getDebugStrOffsetsHeaderSize () const
	Return size of header of debug_str_offsets table.

const dwarf::FormParams &	getFormParams () const
	Return size of address.

Additional Inherited Members
Protected Types inherited from llvm::dwarf_linker::parallel::DwarfUnit
using	FileNamesCache = DenseMap< uint64_t, std::pair< std::string, std::string > >
	Cache for file names for this unit.

Protected Types inherited from llvm::dwarf_linker::parallel::OutputSections
using	SectionsSetTy = std::map< DebugSectionKind, std::shared_ptr< SectionDescriptor > >
	All keeping sections.

Protected Member Functions inherited from llvm::dwarf_linker::parallel::DwarfUnit
void	emitDwarfAbbrevEntry (const DIEAbbrev &Abbrev, SectionDescriptor &AbbrevSection)
	Emit single abbreviation entry.

std::optional< uint64_t >	emitPubAcceleratorEntry (SectionDescriptor &OutSection, const AccelInfo &Info, std::optional< uint64_t > LengthOffset)
	Emit single pubnames/pubtypes accelerator entry.

Protected Attributes inherited from llvm::dwarf_linker::parallel::DwarfUnit
unsigned	ID = 0
	Unique ID for the unit.

std::string	UnitName
	The name of this unit.

std::string	SysRoot
	The DW_AT_LLVM_sysroot of this unit.

std::string	ClangModuleName
	If this is a Clang module, this holds the module's name.

uint64_t	UnitSize = 0

dwarf::Tag	UnitTag = dwarf::DW_TAG_null
	DWARF unit tag.

std::atomic< bool >	IsInterconnectedCU = {false}
	true if current unit references_to/is_referenced by other unit.

FoldingSet< DIEAbbrev >	AbbreviationsSet
	FoldingSet that uniques the abbreviations.

std::vector< std::unique_ptr< DIEAbbrev > >	Abbreviations
	Storage for the unique Abbreviations.

DIE *	OutUnitDIE = nullptr
	Output unit DIE.

FileNamesCache	FileNames

IndexedValuesMap< const StringEntry * >	DebugStringIndexMap
	Maps a string into the index inside .debug_str_offsets section.

Protected Attributes inherited from llvm::dwarf_linker::parallel::OutputSections
LinkingGlobalData &	GlobalData

dwarf::FormParams	Format = {4, 4, dwarf::DWARF32}
	Format for sections.

llvm::endianness	Endianness = llvm::endianness::native
	Endiannes for sections.

SectionsSetTy	SectionDescriptors

Detailed Description

Stores all information related to a compile unit, be it in its original instance of the object file or its brand new cloned and generated DIE tree.

NOTE: we need alignment of at least 8 bytes as we use PointerIntPair<CompileUnit *, 3> in the DependencyTracker.h

Definition at line 53 of file DWARFLinkerCompileUnit.h.

Member Enumeration Documentation

◆ DieOutputPlacement

enum llvm::dwarf_linker::parallel::CompileUnit::DieOutputPlacement : uint8_t

Kinds of placement for the output die.

Enumerator
NotSet
TypeTable	Corresponding DIE goes to the type table only.
PlainDwarf	Corresponding DIE goes to the plain dwarf only.
Both	Corresponding DIE goes to type table and to plain dwarf.

Definition at line 155 of file DWARFLinkerCompileUnit.h.

◆ Stage

enum class llvm::dwarf_linker::parallel::CompileUnit::Stage : uint8_t

strong

The stages of new compile unit processing.

Enumerator
CreatedNotLoaded	Created, linked with input DWARF file.
Loaded	Input DWARF is loaded.
LivenessAnalysisDone	Input DWARF is analysed(DIEs pointing to the real code section are discovered, type names are assigned if ODR is requested).
UpdateDependenciesCompleteness	Check if dependencies have incompatible placement. If that is the case modify placement to be compatible.
TypeNamesAssigned	Type names assigned to DIEs.
Cloned	Output DWARF is generated.
PatchesUpdated	Offsets inside patch records are updated.
Cleaned	Resources(Input DWARF, Output DWARF tree) are released.
Skipped	Compile Unit should be skipped.

Definition at line 56 of file DWARFLinkerCompileUnit.h.

Constructor & Destructor Documentation

◆ CompileUnit() [1/2]

CompileUnit::CompileUnit	(	LinkingGlobalData &	GlobalData,
		unsigned	ID,
		StringRef	ClangModuleName,
		DWARFFile &	File,
		OffsetToUnitTy	UnitFromOffset,
		dwarf::FormParams	Format,
		llvm::endianness	Endianess
	)

Definition at line 28 of file DWARFLinkerCompileUnit.cpp.

References llvm::dwarf_linker::DebugInfo, llvm::dwarf_linker::parallel::OutputSections::Format, llvm::dwarf_linker::parallel::OutputSections::getOrCreateSectionDescriptor(), llvm::dwarf_linker::parallel::OutputSections::setOutputFormat(), and llvm::dwarf_linker::parallel::DwarfUnit::UnitName.

◆ CompileUnit() [2/2]

CompileUnit::CompileUnit	(	LinkingGlobalData &	GlobalData,
		DWARFUnit &	OrigUnit,
		unsigned	ID,
		StringRef	ClangModuleName,
		DWARFFile &	File,
		OffsetToUnitTy	UnitFromOffset,
		dwarf::FormParams	Format,
		llvm::endianness	Endianess
	)

Definition at line 40 of file DWARFLinkerCompileUnit.cpp.

Member Function Documentation

◆ addFunctionRange()

void llvm::dwarf_linker::parallel::CompileUnit::addFunctionRange	(	uint64_t	LowPC,
		uint64_t	HighPC,
		int64_t	PCOffset
	)

Add a function range [LowPC, HighPC) that is relocated by applying offset PCOffset.

◆ addLabelLowPc()

void llvm::dwarf_linker::parallel::CompileUnit::addLabelLowPc	(	uint64_t	LabelLowPc,
		int64_t	PcOffset
	)

Add the low_pc of a label that is relocated by applying offset PCOffset.

◆ analyzeDWARFStructure()

void llvm::dwarf_linker::parallel::CompileUnit::analyzeDWARFStructure ( )

inline

Navigate DWARF tree and set die properties.

Definition at line 127 of file DWARFLinkerCompileUnit.h.

References getDebugInfoEntry(), and getUnitDIE().

◆ analyzeImportedModule()

void CompileUnit::analyzeImportedModule ( const DWARFDebugInfoEntry * DieEntry )

Collect references to parseable Swift interfaces in imported DW_TAG_module blocks.

Definition at line 253 of file DWARFLinkerCompileUnit.cpp.

◆ assignTypeNames()

Error CompileUnit::assignTypeNames ( TypePool & TypePoolRef )

Search for type entries and assign names.

Definition at line 303 of file DWARFLinkerCompileUnit.cpp.

References getDebugInfoEntry(), getUnitDIE(), isValid(), and llvm::Error::success().

◆ cleanupDataAfterClonning()

void CompileUnit::cleanupDataAfterClonning ( )

Cleanup unneeded resources after compile unit is cloned.

Definition at line 239 of file DWARFLinkerCompileUnit.cpp.

References llvm::dwarf_linker::parallel::DwarfUnit::AbbreviationsSet, llvm::DWARFUnit::clear(), llvm::dwarf_linker::parallel::DwarfUnit::FileNames, getOrigUnit(), and llvm::DenseMap< KeyT, ValueT, KeyInfoT, BucketT >::shrink_and_clear().

◆ cloneAndEmit()

Error CompileUnit::cloneAndEmit	(	std::optional< std::reference_wrapper< const Triple > >	TargetTriple,
		TypeUnit *	ArtificialTypeUnit
	)

Clone and emit this compilation unit.

Definition at line 1232 of file DWARFLinkerCompileUnit.cpp.

◆ cloneAndEmitDebugLocations()

Error CompileUnit::cloneAndEmitDebugLocations ( )

Clone and emit debug locations(.debug_loc/.debug_loclists).

Definition at line 443 of file DWARFLinkerCompileUnit.cpp.

References llvm::dwarf_linker::DebugLoc, llvm::dwarf_linker::DebugLocLists, llvm::dwarf_linker::parallel::DwarfUnit::getGlobalData(), getOrigUnit(), llvm::dwarf_linker::parallel::OutputSections::getVersion(), and llvm::Error::success().

Referenced by cloneAndEmit().

◆ cloneAndEmitDebugMacro()

Error CompileUnit::cloneAndEmitDebugMacro ( )

Clone and emit debug macros(.debug_macinfo/.debug_macro).

Definition at line 894 of file DWARFLinkerCompileUnit.cpp.

References llvm::Dwarf, llvm::DWARFDie::find(), getContaingFile(), getOrigUnit(), llvm::dwarf_linker::parallel::DwarfUnit::getOutUnitDIE(), llvm::DWARFUnit::getUnitDIE(), llvm::Error::success(), and llvm::dwarf::toSectionOffset().

Referenced by cloneAndEmit().

◆ cloneAndEmitLineTable()

Error CompileUnit::cloneAndEmitLineTable ( const Triple & TargetTriple )

Definition at line 1517 of file DWARFLinkerCompileUnit.cpp.

References llvm::dwarf::FormParams::AddrSize, llvm::dwarf_linker::DWARFFile::Dwarf, llvm::dwarf_linker::parallel::DwarfUnit::emitDebugLine(), find(), llvm::DWARFDebugLine::Prologue::FormParams, getContaingFile(), llvm::dwarf_linker::parallel::OutputSections::getFormParams(), getFunctionRanges(), llvm::dwarf_linker::parallel::DwarfUnit::getGlobalData(), getOrigUnit(), getUnitDIE(), llvm::DWARFDebugLine::LineTable::Prologue, llvm::DWARFDebugLine::LineTable::Rows, llvm::DWARFDebugLine::LineTable::Sequences, llvm::Error::success(), and warn().

Referenced by cloneAndEmit().

◆ cloneAndEmitRanges()

Error CompileUnit::cloneAndEmitRanges ( )

Clone and emit ranges.

Definition at line 674 of file DWARFLinkerCompileUnit.cpp.

References llvm::dwarf_linker::DebugRange, llvm::dwarf_linker::DebugRngLists, getFunctionRanges(), llvm::dwarf_linker::parallel::DwarfUnit::getGlobalData(), getOrigUnit(), llvm::dwarf_linker::parallel::OutputSections::getVersion(), llvm::AddressRanges::insert(), Range, and llvm::Error::success().

Referenced by cloneAndEmit().

◆ cloneDIE()

std::pair< DIE , TypeEntry > CompileUnit::cloneDIE	(	const DWARFDebugInfoEntry *	InputDieEntry,
		TypeEntry *	ClonedParentTypeDIE,
		uint64_t	OutOffset,
		std::optional< int64_t >	FuncAddressAdjustment,
		std::optional< int64_t >	VarAddressAdjustment,
		BumpPtrAllocator &	Allocator,
		TypeUnit *	ArtificialTypeUnit
	)

Definition at line 1288 of file DWARFLinkerCompileUnit.cpp.

References llvm::dwarf_linker::parallel::DIEGenerator::addChild(), Allocator, assert(), cloneDIE(), llvm::DWARFDebugInfoEntry::getAbbreviationDeclarationPtr(), getDIEIndex(), getDIEInfo(), getFirstChildEntry(), getSiblingEntry(), llvm::DWARFDebugInfoEntry::getTag(), llvm::dwarf_linker::parallel::TypePool::getThreadLocalAllocator(), llvm::dwarf_linker::parallel::TypeUnit::getTypePool(), Info, and llvm::StringMapEntryStorage< ValueTy >::second.

Referenced by cloneAndEmit(), and cloneDIE().

◆ cloneDieAttrExpression()

void CompileUnit::cloneDieAttrExpression	(	const DWARFExpression &	InputExpression,
		SmallVectorImpl< uint8_t > &	OutputExpression,
		SectionDescriptor &	Section,
		std::optional< int64_t >	VarAddressAdjustment,
		OffsetsPtrVector &	PatchesOffsets
	)

Clone attribute location axpression.

Definition at line 1093 of file DWARFLinkerCompileUnit.cpp.

References llvm::SmallVectorImpl< T >::append(), assert(), llvm::ArrayRef< T >::begin(), llvm::StringRef::begin(), llvm::encodeULEB128(), llvm::ArrayRef< T >::end(), llvm::StringRef::end(), llvm::formatv(), llvm::DWARFUnit::getAddressByteSize(), llvm::DWARFUnit::getAddrOffsetSectionItem(), llvm::DWARFExpression::Operation::getCode(), llvm::DWARFExpression::getData(), llvm::DWARFExpression::Operation::getDescription(), llvm::DWARFUnit::getDIEIndexForOffset(), llvm::dwarf::FormParams::getDwarfOffsetByteSize(), llvm::dwarf_linker::parallel::OutputSections::getEndianness(), llvm::DWARFExpression::Operation::getEndOffset(), llvm::dwarf_linker::parallel::OutputSections::getFormParams(), llvm::dwarf_linker::parallel::DwarfUnit::getGlobalData(), llvm::DWARFUnit::getOffset(), getOrigUnit(), llvm::DWARFExpression::Operation::getRawOperand(), llvm::DWARFExpression::Operation::getSubCode(), Idx, llvm::native, llvm::Offset, llvm::DWARFExpression::Operation::Description::Op, llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::SmallVectorBase< Size_T >::size(), llvm::StringRef::slice(), llvm::sys::swapByteOrder(), and warn().

Referenced by llvm::dwarf_linker::parallel::DIEAttributeCloner::cloneBlockAttr().

◆ forEachAcceleratorRecord()

void llvm::dwarf_linker::parallel::CompileUnit::forEachAcceleratorRecord ( function_ref< void(AccelInfo &)> Handler )

inlineoverridevirtual

Enumerates all units accelerator records.

Implements llvm::dwarf_linker::parallel::DwarfUnit.

Definition at line 575 of file DWARFLinkerCompileUnit.h.

References llvm::dwarf_linker::parallel::ArrayList< T, ItemsGroupSize >::forEach().

◆ getContaingFile()

const DWARFFile & llvm::dwarf_linker::parallel::CompileUnit::getContaingFile ( ) const

inline

Returns DWARFFile containing this compile unit.

Definition at line 111 of file DWARFLinkerCompileUnit.h.

Referenced by llvm::dwarf_linker::parallel::DIEAttributeCloner::clone(), cloneAndEmitDebugMacro(), cloneAndEmitLineTable(), and llvm::dwarf_linker::parallel::DIEAttributeCloner::cloneScalarAttr().

◆ getDebugAddrIndex()

uint64_t llvm::dwarf_linker::parallel::CompileUnit::getDebugAddrIndex ( uint64_t Addr )

inline

Returns index(inside .debug_addr) of an address.

Definition at line 436 of file DWARFLinkerCompileUnit.h.

References Addr, and llvm::dwarf_linker::IndexedValuesMap< T >::getValueIndex().

Referenced by llvm::dwarf_linker::parallel::DIEAttributeCloner::cloneAddressAttr().

◆ getDirAndFilenameFromLineTable() [1/2]

std::optional< std::pair< StringRef, StringRef > > CompileUnit::getDirAndFilenameFromLineTable ( const DWARFFormValue & FileIdxValue )

Returns directory and file from the line table by index.

Definition at line 1673 of file DWARFLinkerCompileUnit.cpp.

References llvm::DWARFFormValue::getAsSectionOffset(), llvm::DWARFFormValue::getAsSignedConstant(), llvm::DWARFFormValue::getAsUnsignedConstant(), and getDirAndFilenameFromLineTable().

Referenced by llvm::dwarf_linker::parallel::SyntheticTypeNameBuilder::addDieNameFromDeclFileAndDeclLine(), llvm::dwarf_linker::parallel::DIEAttributeCloner::cloneScalarAttr(), and getDirAndFilenameFromLineTable().

◆ getDirAndFilenameFromLineTable() [2/2]

std::optional< std::pair< StringRef, StringRef > > CompileUnit::getDirAndFilenameFromLineTable ( uint64_t FileIdx )

Returns directory and file from the line table by index.

Definition at line 1689 of file DWARFLinkerCompileUnit.cpp.

References llvm::sys::path::append(), llvm::StringRef::empty(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::end(), llvm::dwarf_linker::parallel::DwarfUnit::FileNames, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::find(), llvm::DWARFUnit::getCompilationDir(), getOrigUnit(), llvm::dwarf_linker::parallel::OutputSections::getVersion(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::insert(), llvm::dwarf_linker::isPathAbsoluteOnWindowsOrPosix(), llvm::dwarf_linker::parallel::DwarfUnit::Name, llvm::sys::path::native, llvm::Expected< T >::takeError(), and warn().

◆ getFileName()

StringEntry * CompileUnit::getFileName	(	unsigned	FileIdx,
		StringPool &	GlobalStrings
	)

Returns name of the file for the FileIdx from the unit`s line table.

Definition at line 188 of file DWARFLinkerCompileUnit.cpp.

References llvm::sys::path::append(), assert(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::end(), llvm::sys::path::filename(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::find(), llvm::DWARFDebugLine::LineTable::getFileNameByIndex(), getOrigUnit(), llvm::DWARFDebugLine::LineTable::hasFileAtIndex(), llvm::ConcurrentHashTableByPtr< KeyTy, KeyDataTy, AllocatorTy, Info >::insert(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::insert(), llvm::sys::path::parent_path(), and llvm::sys::fs::real_path().

◆ getFunctionRanges()

const RangesTy & llvm::dwarf_linker::parallel::CompileUnit::getFunctionRanges ( ) const

inline

Returns function ranges of this unit.

Definition at line 401 of file DWARFLinkerCompileUnit.h.

Referenced by cloneAndEmitLineTable(), and cloneAndEmitRanges().

◆ getHighPc()

uint64_t llvm::dwarf_linker::parallel::CompileUnit::getHighPc ( ) const

inline

Returns value of DW_AT_high_pc attribute.

Definition at line 372 of file DWARFLinkerCompileUnit.h.

Referenced by llvm::dwarf_linker::parallel::DIEAttributeCloner::cloneAddressAttr(), and llvm::dwarf_linker::parallel::DIEAttributeCloner::cloneScalarAttr().

◆ getLowPc()

std::optional< uint64_t > llvm::dwarf_linker::parallel::CompileUnit::getLowPc ( ) const

inline

Returns value of DW_AT_low_pc attribute.

Definition at line 369 of file DWARFLinkerCompileUnit.h.

Referenced by llvm::dwarf_linker::parallel::DIEAttributeCloner::cloneAddressAttr(), and llvm::dwarf_linker::parallel::DIEAttributeCloner::cloneScalarAttr().

◆ getStage()

Stage llvm::dwarf_linker::parallel::CompileUnit::getStage ( ) const

inline

Returns stage of overall processing.

Definition at line 98 of file DWARFLinkerCompileUnit.h.

Referenced by maybeResetToLoadedStage(), and resolveDIEReference().

◆ hasLabelAt()

bool llvm::dwarf_linker::parallel::CompileUnit::hasLabelAt ( uint64_t Addr ) const

inline

Returns true if there is a label corresponding to the specified Addr.

Definition at line 375 of file DWARFLinkerCompileUnit.h.

References Addr, and llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::count().

◆ loadInputDIEs()

bool CompileUnit::loadInputDIEs ( )

Load DIEs of input compilation unit.

Returns: true if input DIEs successfully loaded.

Definition at line 114 of file DWARFLinkerCompileUnit.cpp.

References getOrigUnit(), getUnitDIE(), and llvm::SmallVectorImpl< T >::resize().

◆ loadLineTable()

void CompileUnit::loadLineTable ( )

Loads unit line table.

Definition at line 71 of file DWARFLinkerCompileUnit.cpp.

References llvm::dwarf_linker::DWARFFile::Dwarf, and getOrigUnit().

◆ maybeResetToLoadedStage()

void CompileUnit::maybeResetToLoadedStage ( )

Reset compile units data(results of liveness analysis, clonning) if current stage greater than Stage::Loaded.

We need to reset data as we are going to repeat stages.

Definition at line 75 of file DWARFLinkerCompileUnit.cpp.

References llvm::dwarf_linker::parallel::DwarfUnit::Abbreviations, llvm::dwarf_linker::parallel::DwarfUnit::AbbreviationsSet, llvm::AddressRangesBase< T >::clear(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::clear(), llvm::dwarf_linker::IndexedValuesMap< T >::clear(), Cloned, CreatedNotLoaded, llvm::dwarf_linker::parallel::ArrayList< T, ItemsGroupSize >::erase(), llvm::dwarf_linker::parallel::OutputSections::eraseSections(), getStage(), Info, Loaded, llvm::dwarf_linker::parallel::DwarfUnit::Name, llvm::Offset, llvm::dwarf_linker::parallel::DwarfUnit::OutUnitDIE, and setStage().

◆ resolveDependenciesAndMarkLiveness()

bool CompileUnit::resolveDependenciesAndMarkLiveness	(	bool	InterCUProcessingStarted,
		std::atomic< bool > &	HasNewInterconnectedCUs
	)

Search for subprograms and variables referencing live code and discover dependend DIEs.

Mark live DIEs, set placement for DIEs.

Definition at line 1832 of file DWARFLinkerCompileUnit.cpp.

◆ resolveDIEReference() [1/2]

std::optional< UnitEntryPairTy > CompileUnit::resolveDIEReference	(	const DWARFDebugInfoEntry *	DieEntry,
		dwarf::Attribute	Attr,
		ResolveInterCUReferencesMode	CanResolveInterCUReferences
	)

Definition at line 417 of file DWARFLinkerCompileUnit.cpp.

References find(), and resolveDIEReference().

◆ resolveDIEReference() [2/2]

std::optional< UnitEntryPairTy > CompileUnit::resolveDIEReference	(	const DWARFFormValue &	RefValue,
		ResolveInterCUReferencesMode	CanResolveInterCUReferences
	)

Resolve the DIE attribute reference that has been extracted in RefValue.

The resulting DIE might be in another CompileUnit.

Returns: referenced die and corresponding compilation unit. compilation unit is null if reference could not be resolved.

Definition at line 381 of file DWARFLinkerCompileUnit.cpp.

References Cloned, llvm::DWARFFormValue::getAsDebugInfoReference(), llvm::DWARFFormValue::getAsRelativeReference(), getDebugInfoEntry(), getDIEIndexForOffset(), llvm::DWARFUnit::getOffset(), getStage(), llvm::DWARFFormValue::getUnit(), and llvm::Offset.

Referenced by llvm::dwarf_linker::parallel::SyntheticTypeNameBuilder::addReferencedODRDies(), llvm::dwarf_linker::parallel::DIEAttributeCloner::cloneDieRefAttr(), llvm::dwarf_linker::parallel::UnitEntryPairTy::getNamespaceOrigin(), and resolveDIEReference().

◆ saveAcceleratorInfo()

void llvm::dwarf_linker::parallel::CompileUnit::saveAcceleratorInfo ( const DwarfUnit::AccelInfo & Info )

inline

Save specified accelerator info Info.

Definition at line 569 of file DWARFLinkerCompileUnit.h.

References llvm::dwarf_linker::parallel::ArrayList< T, ItemsGroupSize >::add(), and Info.

Referenced by llvm::dwarf_linker::parallel::AcceleratorRecordsSaver::saveNameRecord(), llvm::dwarf_linker::parallel::AcceleratorRecordsSaver::saveNamespaceRecord(), llvm::dwarf_linker::parallel::AcceleratorRecordsSaver::saveObjCNameRecord(), and llvm::dwarf_linker::parallel::AcceleratorRecordsSaver::saveTypeRecord().

◆ setStage()

void llvm::dwarf_linker::parallel::CompileUnit::setStage ( Stage Stage )

inline

Set stage of overall processing.

Definition at line 101 of file DWARFLinkerCompileUnit.h.

Referenced by maybeResetToLoadedStage().

◆ updateDependenciesCompleteness()

bool CompileUnit::updateDependenciesCompleteness ( )

Check dependend DIEs for incompatible placement.

Make placement to be consistent.

Definition at line 1841 of file DWARFLinkerCompileUnit.cpp.

References assert().

◆ updateDieRefPatchesWithClonedOffsets()

void CompileUnit::updateDieRefPatchesWithClonedOffsets ( )

After cloning stage the output DIEs offsets are deallocated.

This method copies output offsets for referenced DIEs into DIEs patches.

Replace stored DIE indexes with DIE output offsets.

Definition at line 334 of file DWARFLinkerCompileUnit.cpp.

References llvm::dwarf_linker::DebugInfo, llvm::dwarf_linker::DebugLoc, llvm::dwarf_linker::DebugLocLists, getDieOutOffset(), llvm::dwarf_linker::parallel::DebugDieRefPatch::RefCU, llvm::dwarf_linker::parallel::DebugULEB128DieRefPatch::RefCU, llvm::dwarf_linker::parallel::DebugDieRefPatch::RefDieIdxOrClonedOffset, llvm::dwarf_linker::parallel::DebugULEB128DieRefPatch::RefDieIdxOrClonedOffset, and llvm::dwarf_linker::parallel::OutputSections::tryGetSectionDescriptor().

◆ verifyDependencies()

void CompileUnit::verifyDependencies ( )

Check DIEs to have a consistent marking(keep marking, placement marking).

Definition at line 1847 of file DWARFLinkerCompileUnit.cpp.

References assert().

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

lib/DWARFLinker/Parallel/DWARFLinkerCompileUnit.h
lib/DWARFLinker/Parallel/DWARFLinkerCompileUnit.cpp

Classes

Public Types

Public Member Functions

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ DieOutputPlacement

◆ Stage

Constructor & Destructor Documentation

◆ CompileUnit() [1/2]

◆ CompileUnit() [2/2]

Member Function Documentation

◆ addFunctionRange()

◆ addLabelLowPc()

◆ analyzeDWARFStructure()

◆ analyzeImportedModule()

◆ assignTypeNames()

◆ cleanupDataAfterClonning()

◆ cloneAndEmit()

◆ cloneAndEmitDebugLocations()

◆ cloneAndEmitDebugMacro()

◆ cloneAndEmitLineTable()

◆ cloneAndEmitRanges()

◆ cloneDIE()

◆ cloneDieAttrExpression()

◆ forEachAcceleratorRecord()

◆ getContaingFile()

◆ getDebugAddrIndex()

◆ getDirAndFilenameFromLineTable() [1/2]

◆ getDirAndFilenameFromLineTable() [2/2]

◆ getFileName()

◆ getFunctionRanges()

◆ getHighPc()

◆ getLowPc()

◆ getStage()

◆ hasLabelAt()

◆ loadInputDIEs()

◆ loadLineTable()

◆ maybeResetToLoadedStage()

◆ resolveDependenciesAndMarkLiveness()

◆ resolveDIEReference() [1/2]

◆ resolveDIEReference() [2/2]

◆ saveAcceleratorInfo()

◆ setStage()

◆ updateDependenciesCompleteness()

◆ updateDieRefPatchesWithClonedOffsets()

◆ verifyDependencies()