LLVM 20.0.0git
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llvm::dwarf_linker::classic::CompileUnit Class Reference

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

#include "llvm/DWARFLinker/Classic/DWARFLinkerCompileUnit.h"

Classes

struct  AccelInfo
 
struct  DIEInfo
 Information gathered about a DIE in the object file. More...
 

Public Member Functions

 CompileUnit (DWARFUnit &OrigUnit, unsigned ID, bool CanUseODR, StringRef ClangModuleName)
 
DWARFUnitgetOrigUnit () const
 
unsigned getUniqueID () const
 
void createOutputDIE ()
 
DIEgetOutputUnitDIE () const
 
dwarf::Tag getTag () const
 
bool hasODR () const
 
bool isClangModule () const
 
uint16_t getLanguage ()
 
StringRef getSysRoot ()
 Return the DW_AT_LLVM_sysroot of the compile unit or an empty StringRef.
 
const std::string & getClangModuleName () const
 
DIEInfogetInfo (unsigned Idx)
 
const DIEInfogetInfo (unsigned Idx) const
 
DIEInfogetInfo (const DWARFDie &Die)
 
uint64_t getStartOffset () const
 
uint64_t getNextUnitOffset () const
 
void setStartOffset (uint64_t DebugInfoSize)
 
std::optional< uint64_tgetLowPc () const
 
uint64_t getHighPc () const
 
bool hasLabelAt (uint64_t Addr) const
 
const RangesTygetFunctionRanges () const
 
const RngListAttributesTygetRangesAttributes ()
 
std::optional< PatchLocationgetUnitRangesAttribute () const
 
const LocListAttributesTygetLocationAttributes () const
 
void markEverythingAsKept ()
 Mark every DIE in this unit as kept.
 
uint64_t computeNextUnitOffset (uint16_t DwarfVersion)
 Compute the end offset for this unit.
 
void noteForwardReference (DIE *Die, const CompileUnit *RefUnit, DeclContext *Ctxt, PatchLocation Attr)
 Keep track of a forward reference to DIE Die in RefUnit by Attr.
 
void fixupForwardReferences ()
 Apply all fixups recorded by noteForwardReference().
 
void addLabelLowPc (uint64_t LabelLowPc, int64_t PcOffset)
 Add the low_pc of a label that is relocated by applying offset PCOffset.
 
void addFunctionRange (uint64_t LowPC, uint64_t HighPC, int64_t PCOffset)
 Add a function range [LowPC, HighPC) that is relocated by applying offset PCOffset.
 
void noteRangeAttribute (const DIE &Die, PatchLocation Attr)
 Keep track of a DW_AT_range attribute that we will need to patch up later.
 
void noteLocationAttribute (PatchLocation Attr)
 Keep track of a location attribute pointing to a location list in the debug_loc section.
 
void addNamespaceAccelerator (const DIE *Die, DwarfStringPoolEntryRef Name)
 Add a name accelerator entry for Die with Name.
 
void addNameAccelerator (const DIE *Die, DwarfStringPoolEntryRef Name, bool SkipPubnamesSection=false)
 Add a name accelerator entry for Die with Name.
 
void addObjCAccelerator (const DIE *Die, DwarfStringPoolEntryRef Name, bool SkipPubnamesSection=false)
 Add various accelerator entries for Die with Name which is stored in the string table at Offset.
 
void addTypeAccelerator (const DIE *Die, DwarfStringPoolEntryRef Name, bool ObjcClassImplementation, uint32_t QualifiedNameHash)
 Add a type accelerator entry for Die with Name which is stored in the string table at Offset.
 
const std::vector< AccelInfo > & getPubnames () const
 
const std::vector< AccelInfo > & getPubtypes () const
 
const std::vector< AccelInfo > & getNamespaces () const
 
const std::vector< AccelInfo > & getObjC () const
 
MCSymbolgetLabelBegin ()
 
void setLabelBegin (MCSymbol *S)
 

Detailed Description

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

Definition at line 63 of file DWARFLinkerCompileUnit.h.

Constructor & Destructor Documentation

◆ CompileUnit()

llvm::dwarf_linker::classic::CompileUnit::CompileUnit ( DWARFUnit OrigUnit,
unsigned  ID,
bool  CanUseODR,
StringRef  ClangModuleName 
)
inline

Member Function Documentation

◆ addFunctionRange()

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

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

Definition at line 165 of file DWARFLinkerCompileUnit.cpp.

References llvm::AddressRangesMap::insert().

◆ addLabelLowPc()

void CompileUnit::addLabelLowPc ( uint64_t  LabelLowPc,
int64_t  PcOffset 
)

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

Definition at line 161 of file DWARFLinkerCompileUnit.cpp.

References llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::insert().

◆ addNameAccelerator()

void llvm::CompileUnit::addNameAccelerator ( const DIE Die,
DwarfStringPoolEntryRef  Name,
bool  SkipPubnamesSection = false 
)

Add a name accelerator entry for Die with Name.

Definition at line 199 of file DWARFLinkerCompileUnit.cpp.

References Name.

◆ addNamespaceAccelerator()

void llvm::CompileUnit::addNamespaceAccelerator ( const DIE Die,
DwarfStringPoolEntryRef  Name 
)

Add a name accelerator entry for Die with Name.

Definition at line 188 of file DWARFLinkerCompileUnit.cpp.

References Name.

◆ addObjCAccelerator()

void llvm::CompileUnit::addObjCAccelerator ( const DIE Die,
DwarfStringPoolEntryRef  Name,
bool  SkipPubnamesSection = false 
)

Add various accelerator entries for Die with Name which is stored in the string table at Offset.

Name must be an Objective-C selector.

Definition at line 193 of file DWARFLinkerCompileUnit.cpp.

References Name.

◆ addTypeAccelerator()

void llvm::CompileUnit::addTypeAccelerator ( const DIE Die,
DwarfStringPoolEntryRef  Name,
bool  ObjcClassImplementation,
uint32_t  QualifiedNameHash 
)

Add a type accelerator entry for Die with Name which is stored in the string table at Offset.

Definition at line 205 of file DWARFLinkerCompileUnit.cpp.

References Name.

◆ computeNextUnitOffset()

uint64_t llvm::CompileUnit::computeNextUnitOffset ( uint16_t  DwarfVersion)

Compute the end offset for this unit.

Must be called after the CU's DIEs have been cloned.

Returns
the next unit offset (which is also the current debug_info section size).

Definition at line 127 of file DWARFLinkerCompileUnit.cpp.

◆ createOutputDIE()

void llvm::dwarf_linker::classic::CompileUnit::createOutputDIE ( )
inline

◆ fixupForwardReferences()

void llvm::CompileUnit::fixupForwardReferences ( )

◆ getClangModuleName()

const std::string & llvm::dwarf_linker::classic::CompileUnit::getClangModuleName ( ) const
inline

Definition at line 148 of file DWARFLinkerCompileUnit.h.

◆ getFunctionRanges()

const RangesTy & llvm::dwarf_linker::classic::CompileUnit::getFunctionRanges ( ) const
inline

Definition at line 166 of file DWARFLinkerCompileUnit.h.

◆ getHighPc()

uint64_t llvm::dwarf_linker::classic::CompileUnit::getHighPc ( ) const
inline

Definition at line 163 of file DWARFLinkerCompileUnit.h.

◆ getInfo() [1/3]

DIEInfo & llvm::dwarf_linker::classic::CompileUnit::getInfo ( const DWARFDie Die)
inline

Definition at line 153 of file DWARFLinkerCompileUnit.h.

References llvm::DWARFUnit::getDIEIndex(), getOrigUnit(), and Idx.

◆ getInfo() [2/3]

DIEInfo & llvm::dwarf_linker::classic::CompileUnit::getInfo ( unsigned  Idx)
inline

Definition at line 150 of file DWARFLinkerCompileUnit.h.

References Idx.

◆ getInfo() [3/3]

const DIEInfo & llvm::dwarf_linker::classic::CompileUnit::getInfo ( unsigned  Idx) const
inline

Definition at line 151 of file DWARFLinkerCompileUnit.h.

References Idx.

◆ getLabelBegin()

MCSymbol * llvm::dwarf_linker::classic::CompileUnit::getLabelBegin ( )
inline

Definition at line 264 of file DWARFLinkerCompileUnit.h.

◆ getLanguage()

uint16_t llvm::CompileUnit::getLanguage ( )

◆ getLocationAttributes()

const LocListAttributesTy & llvm::dwarf_linker::classic::CompileUnit::getLocationAttributes ( ) const
inline

Definition at line 174 of file DWARFLinkerCompileUnit.h.

◆ getLowPc()

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

Definition at line 162 of file DWARFLinkerCompileUnit.h.

◆ getNamespaces()

const std::vector< AccelInfo > & llvm::dwarf_linker::classic::CompileUnit::getNamespaces ( ) const
inline

Definition at line 261 of file DWARFLinkerCompileUnit.h.

◆ getNextUnitOffset()

uint64_t llvm::dwarf_linker::classic::CompileUnit::getNextUnitOffset ( ) const
inline

Definition at line 159 of file DWARFLinkerCompileUnit.h.

◆ getObjC()

const std::vector< AccelInfo > & llvm::dwarf_linker::classic::CompileUnit::getObjC ( ) const
inline

Definition at line 262 of file DWARFLinkerCompileUnit.h.

◆ getOrigUnit()

DWARFUnit & llvm::dwarf_linker::classic::CompileUnit::getOrigUnit ( ) const
inline

Definition at line 128 of file DWARFLinkerCompileUnit.h.

Referenced by getInfo(), getLanguage(), and getSysRoot().

◆ getOutputUnitDIE()

DIE * llvm::dwarf_linker::classic::CompileUnit::getOutputUnitDIE ( ) const
inline

Definition at line 134 of file DWARFLinkerCompileUnit.h.

References llvm::DIEUnit::getUnitDie().

◆ getPubnames()

const std::vector< AccelInfo > & llvm::dwarf_linker::classic::CompileUnit::getPubnames ( ) const
inline

Definition at line 259 of file DWARFLinkerCompileUnit.h.

◆ getPubtypes()

const std::vector< AccelInfo > & llvm::dwarf_linker::classic::CompileUnit::getPubtypes ( ) const
inline

Definition at line 260 of file DWARFLinkerCompileUnit.h.

◆ getRangesAttributes()

const RngListAttributesTy & llvm::dwarf_linker::classic::CompileUnit::getRangesAttributes ( )
inline

Definition at line 168 of file DWARFLinkerCompileUnit.h.

◆ getStartOffset()

uint64_t llvm::dwarf_linker::classic::CompileUnit::getStartOffset ( ) const
inline

Definition at line 158 of file DWARFLinkerCompileUnit.h.

Referenced by fixupForwardReferences().

◆ getSysRoot()

StringRef llvm::CompileUnit::getSysRoot ( )

Return the DW_AT_LLVM_sysroot of the compile unit or an empty StringRef.

Definition at line 57 of file DWARFLinkerCompileUnit.cpp.

References getOrigUnit(), llvm::DWARFUnit::getUnitDIE(), llvm::StringRef::str(), and llvm::dwarf::toStringRef().

◆ getTag()

dwarf::Tag llvm::dwarf_linker::classic::CompileUnit::getTag ( ) const
inline

◆ getUniqueID()

unsigned llvm::dwarf_linker::classic::CompileUnit::getUniqueID ( ) const
inline

Definition at line 130 of file DWARFLinkerCompileUnit.h.

◆ getUnitRangesAttribute()

std::optional< PatchLocation > llvm::dwarf_linker::classic::CompileUnit::getUnitRangesAttribute ( ) const
inline

Definition at line 170 of file DWARFLinkerCompileUnit.h.

◆ hasLabelAt()

bool llvm::dwarf_linker::classic::CompileUnit::hasLabelAt ( uint64_t  Addr) const
inline

◆ hasODR()

bool llvm::dwarf_linker::classic::CompileUnit::hasODR ( ) const
inline

Definition at line 142 of file DWARFLinkerCompileUnit.h.

◆ isClangModule()

bool llvm::dwarf_linker::classic::CompileUnit::isClangModule ( ) const
inline

Definition at line 143 of file DWARFLinkerCompileUnit.h.

◆ markEverythingAsKept()

void llvm::CompileUnit::markEverythingAsKept ( )

Mark every DIE in this unit as kept.

This function also marks variables as InDebugMap so that they appear in the reconstructed accelerator tables.

Definition at line 65 of file DWARFLinkerCompileUnit.cpp.

References llvm::Data, llvm::DWARFUnit::getDIEAtIndex(), llvm::DIE::getTag(), I, Idx, llvm::inFunctionScope(), and llvm::dwarf::toStringRef().

◆ noteForwardReference()

void llvm::CompileUnit::noteForwardReference ( DIE Die,
const CompileUnit RefUnit,
DeclContext Ctxt,
PatchLocation  Attr 
)

Keep track of a forward reference to DIE Die in RefUnit by Attr.

Keep track of a forward cross-cu reference from this unit to Die that lives in RefUnit.

The attribute should be fixed up later to point to the absolute offset of Die in the debug_info section or to the canonical offset of Ctxt if it is non-null.

Definition at line 138 of file DWARFLinkerCompileUnit.cpp.

◆ noteLocationAttribute()

void llvm::CompileUnit::noteLocationAttribute ( PatchLocation  Attr)

Keep track of a location attribute pointing to a location list in the debug_loc section.

Definition at line 184 of file DWARFLinkerCompileUnit.cpp.

References llvm::SmallVectorImpl< T >::emplace_back().

◆ noteRangeAttribute()

void llvm::CompileUnit::noteRangeAttribute ( const DIE Die,
PatchLocation  Attr 
)

Keep track of a DW_AT_range attribute that we will need to patch up later.

Definition at line 175 of file DWARFLinkerCompileUnit.cpp.

References llvm::SmallVectorImpl< T >::emplace_back(), and llvm::DIE::getTag().

◆ setLabelBegin()

void llvm::dwarf_linker::classic::CompileUnit::setLabelBegin ( MCSymbol S)
inline

Definition at line 265 of file DWARFLinkerCompileUnit.h.

◆ setStartOffset()

void llvm::dwarf_linker::classic::CompileUnit::setStartOffset ( uint64_t  DebugInfoSize)
inline

Definition at line 160 of file DWARFLinkerCompileUnit.h.


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