LLVM 22.0.0git
Public Types | Public Member Functions | Static Public Member Functions | Protected Member Functions | List of all members
llvm::DwarfDebug Class Reference

Collects and handles dwarf debug information. More...

#include "CodeGen/AsmPrinter/DwarfDebug.h"

Inheritance diagram for llvm::DwarfDebug:
[legend]

Public Types

enum class  MinimizeAddrInV5 {
  Default , Disabled , Ranges , Expressions ,
  Form
}
enum class  DWARF5AccelTableKind { CU = 0 , TU = 1 }

Public Member Functions

 DwarfDebug (AsmPrinter *A)
 ~DwarfDebug () override
void beginModule (Module *M) override
 Emit all Dwarf sections that should come prior to the content.
void endModule () override
 Emit all Dwarf sections that should come after the content.
const MachineInstr * emitInitialLocDirective (const MachineFunction &MF, unsigned CUID)
 Emits inital debug location directive.
void beginInstruction (const MachineInstr *MI) override
 Process beginning of an instruction.
void beginCodeAlignment (const MachineBasicBlock &MBB) override
 Process beginning of code alignment.
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.
void addArangeLabel (SymbolCU SCU)
 Add a label so that arange data can be generated for it.
void setSymbolSize (const MCSymbol *Sym, uint64_t Size) override
 For symbols that have a size designated (e.g.
bool useAllLinkageNames () const
 Returns whether we should emit all DW_AT_[MIPS_]linkage_name.
bool useGNUTLSOpcode () const
 Returns whether to use DW_OP_GNU_push_tls_address, instead of the standard DW_OP_form_tls_address opcode.
bool useDWARF2Bitfields () const
 Returns whether to use the DWARF2 format for bitfields instyead of the DWARF4 format.
bool useInlineStrings () const
 Returns whether to use inline strings.
bool useRangesSection () const
 Returns whether ranges section should be emitted.
bool alwaysUseRanges (const DwarfCompileUnit &) const
 Returns whether range encodings should be used for single entry range lists.
bool useAddrOffsetExpressions () const
bool useAddrOffsetForm () const
bool useSectionsAsReferences () const
 Returns whether to use sections as labels rather than temp symbols.
bool generateTypeUnits () const
 Returns whether to generate DWARF v4 type units.
AccelTableKind getAccelTableKind () const
 Returns what kind (if any) of accelerator tables to emit.
void setTheAccelTableKind (AccelTableKind K)
 Seet TheAccelTableKind.
bool useAppleExtensionAttributes () const
bool useSplitDwarf () const
 Returns whether or not to change the current debug info for the split dwarf proposal support.
bool useSegmentedStringOffsetsTable () const
 Returns whether to generate a string offsets table with (possibly shared) contributions from each CU and type unit.
bool emitDebugEntryValues () const
bool useOpConvert () const
bool shareAcrossDWOCUs () const
uint16_t getDwarfVersion () const
 Returns the Dwarf Version.
dwarf::Form getDwarfSectionOffsetForm () const
 Returns a suitable DWARF form to represent a section offset, i.e.
const DwarfCompileUnit * getPrevCU () const
 Returns the previous CU that was being updated.
void setPrevCU (const DwarfCompileUnit *PrevCU)
void terminateLineTable (const DwarfCompileUnit *CU)
 Terminate the line table by adding the last range label.
const DebugLocStream & getDebugLocs () const
 Returns the entries for the .debug_loc section.
void emitDebugLocEntry (ByteStreamer &Streamer, const DebugLocStream::Entry &Entry, const DwarfCompileUnit *CU)
 Emit an entry for the debug loc section.
void emitDebugLocEntryLocation (const DebugLocStream::Entry &Entry, const DwarfCompileUnit *CU)
 Emit the location for a debug loc entry, including the size header.
void addSubprogramNames (const DwarfUnit &Unit, const DICompileUnit::DebugNameTableKind NameTableKind, const DISubprogram *SP, DIE &Die)
AddressPool & getAddressPool ()
void addAccelName (const DwarfUnit &Unit, const DICompileUnit::DebugNameTableKind NameTableKind, StringRef Name, const DIE &Die)
void addAccelObjC (const DwarfUnit &Unit, const DICompileUnit::DebugNameTableKind NameTableKind, StringRef Name, const DIE &Die)
void addAccelNamespace (const DwarfUnit &Unit, const DICompileUnit::DebugNameTableKind NameTableKind, StringRef Name, const DIE &Die)
void addAccelType (const DwarfUnit &Unit, const DICompileUnit::DebugNameTableKind NameTableKind, 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.
DwarfCompileUnit * lookupCU (const DIE *Die)
 Find the matching DwarfCompileUnit for the given CU DIE.
const DwarfCompileUnit * lookupCU (const DIE *Die) const
unsigned getStringTypeLoc (const DIStringType *ST) const
void addStringTypeLoc (const DIStringType *ST, unsigned Loc)
bool tuneForGDB () const
bool tuneForLLDB () const
bool tuneForSCE () const
bool tuneForDBX () const
const MCSymbol * getSectionLabel (const MCSection *S)
void insertSectionLabel (const MCSymbol *S)
std::optional< MD5::MD5Result > getMD5AsBytes (const DIFile *File) const
 If the File has an MD5 checksum, return it as an MD5Result allocated in the MCContext.
MDNodeSet & getLocalDeclsForScope (const DILocalScope *S)
void setCurrentDWARF5AccelTable (const DWARF5AccelTableKind Kind)
 Sets the current DWARF5AccelTable to use.
DWARF5AccelTable & getCurrentDWARF5AccelTable ()
 Returns either CU or TU DWARF5AccelTable.
Public Member Functions inherited from llvm::DebugHandlerBase
virtual ~DebugHandlerBase () override
void endInstruction () override
 Process end of an instruction.
void beginFunction (const MachineFunction *MF) override
 Gather pre-function debug information.
void endFunction (const MachineFunction *MF) override
 Gather post-function debug information.
void beginBasicBlockSection (const MachineBasicBlock &MBB) override
 Process the beginning of a new basic-block-section within a function.
void endBasicBlockSection (const MachineBasicBlock &MBB) override
 Process the end of a basic-block-section within a function.
MCSymbol * getLabelBeforeInsn (const MachineInstr *MI)
 Return Label preceding the instruction.
MCSymbol * getLabelAfterInsn (const MachineInstr *MI)
 Return Label immediately following the instruction.
const InstructionOrdering & getInstOrdering () const
Public Member Functions inherited from llvm::AsmPrinterHandler
virtual ~AsmPrinterHandler ()
 Pin vtables to this file.
virtual void markFunctionEnd ()
virtual void beginFunclet (const MachineBasicBlock &MBB, MCSymbol *Sym=nullptr)
 Emit target-specific EH funclet machinery.
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.
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.
static bool isUnsignedDIType (const DIType *Ty)
 Return true if type encoding is unsigned.

Protected Member Functions

void beginFunctionImpl (const MachineFunction *MF) override
 Gather pre-function debug information.
void endFunctionImpl (const MachineFunction *MF) override
 Gather and emit post-function debug information.
unsigned getDwarfCompileUnitIDForLineTable (const DwarfCompileUnit &CU)
 Get Dwarf compile unit ID for line table.
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.
void requestLabelBeforeInsn (const MachineInstr *MI)
 Ensure that a label will be emitted before MI.
void requestLabelAfterInsn (const MachineInstr *MI)
 Ensure that a label will be emitted after MI.

Additional Inherited Members

Protected Attributes inherited from llvm::DebugHandlerBase
AsmPrinter * Asm = nullptr
 Target of debug info emission.
MachineModuleInfo * MMI = nullptr
 Collected machine module information.
DebugLoc PrevInstLoc
 Previous instruction's location information.
MCSymbol * PrevLabel = nullptr
const MachineBasicBlock * PrevInstBB = nullptr
const MachineInstr * PrologEndLoc
 This location indicates end of function prologue and beginning of function body.
const MachineBasicBlock * EpilogBeginBlock = nullptr
 This block includes epilogue instructions.
const MachineInstr * CurMI = nullptr
 If nonnull, stores the current machine instruction we're processing.
LexicalScopes LScopes
DbgValueHistoryMap DbgValues
 History of DBG_VALUE and clobber instructions for each user variable.
DbgLabelInstrMap DbgLabels
 Mapping of inlined labels and DBG_LABEL machine instruction.
DenseMap< const MachineInstr *, MCSymbol * > LabelsBeforeInsn
 Maps instruction with label emitted before instruction.
DenseMap< const MachineInstr *, MCSymbol * > LabelsAfterInsn
 Maps instruction with label emitted after instruction.

Detailed Description

Collects and handles dwarf debug information.

Definition at line 351 of file DwarfDebug.h.

Member Enumeration Documentation

◆ DWARF5AccelTableKind

enum class llvm::DwarfDebug::DWARF5AccelTableKind
strong
Enumerator
CU 
TU 

Definition at line 461 of file DwarfDebug.h.

◆ MinimizeAddrInV5

enum class llvm::DwarfDebug::MinimizeAddrInV5
strong
Enumerator
Default 
Disabled 
Ranges 
Expressions 
Form 

Definition at line 453 of file DwarfDebug.h.

Constructor & Destructor Documentation

◆ DwarfDebug()

DwarfDebug::DwarfDebug ( AsmPrinter * A)

Definition at line 334 of file DwarfDebug.cpp.

References A(), AllLinkageNames, llvm::DebugHandlerBase::Asm, computeAccelTableKind(), llvm::DBX, llvm::DebugHandlerBase::DebugHandlerBase(), llvm::Default, Default, DefaultLinkageNames, llvm::dwarf::DWARF32, llvm::dwarf::DWARF64, llvm::dwarf::DWARF_VERSION, DwarfInlinedStrings, DwarfLinkageNames, DwarfOpConvert, DwarfSectionsAsReferences, llvm::Enable, llvm::GDB, GenerateARangeSection, GenerateDwarfTypeUnits, if(), llvm::LLDB, MinimizeAddrInV5Option, llvm::DebugHandlerBase::MMI, NoDwarfRangesSection, llvm::report_fatal_error(), llvm::SCE, tuneForDBX(), tuneForGDB(), tuneForLLDB(), tuneForSCE(), UseGNUDebugMacro, and useSplitDwarf().

◆ ~DwarfDebug()

DwarfDebug::~DwarfDebug ( )
overridedefault

References MBB, and MI.

Member Function Documentation

◆ addAccelName()

void DwarfDebug::addAccelName ( const DwarfUnit & Unit,
const DICompileUnit::DebugNameTableKind NameTableKind,
StringRef Name,
const DIE & Die )

Definition at line 4055 of file DwarfDebug.cpp.

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

◆ addAccelNamespace()

void DwarfDebug::addAccelNamespace ( const DwarfUnit & Unit,
const DICompileUnit::DebugNameTableKind NameTableKind,
StringRef Name,
const DIE & Die )

Definition at line 4071 of file DwarfDebug.cpp.

◆ addAccelObjC()

void DwarfDebug::addAccelObjC ( const DwarfUnit & Unit,
const DICompileUnit::DebugNameTableKind NameTableKind,
StringRef Name,
const DIE & Die )

Definition at line 4062 of file DwarfDebug.cpp.

References llvm::Apple, and getAccelTableKind().

Referenced by addSubprogramNames().

◆ addAccelType()

void DwarfDebug::addAccelType ( const DwarfUnit & Unit,
const DICompileUnit::DebugNameTableKind NameTableKind,
StringRef Name,
const DIE & Die,
char Flags )

Definition at line 4078 of file DwarfDebug.cpp.

◆ addArangeLabel()

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

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

Definition at line 760 of file DwarfDebug.h.

Referenced by endFunctionImpl().

◆ 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 3897 of file DwarfDebug.cpp.

References llvm::DwarfUnit::addString(), llvm::DwarfUnit::addStringOffsetsStart(), llvm::DwarfUnit::addUInt(), llvm::DebugHandlerBase::Asm, llvm::cast(), llvm::DwarfUnit::createTypeDIE(), CU, llvm::Dwarf, getAccelTableKind(), getDwarfVersion(), llvm::DIType::getScope(), llvm::DIEUnit::getUnitDie(), makeTypeSignature(), setCurrentDWARF5AccelTable(), llvm::DIEUnit::setSection(), llvm::DwarfTypeUnit::setType(), llvm::DwarfTypeUnit::setTypeSignature(), TU, useSegmentedStringOffsetsTable(), and useSplitDwarf().

◆ addStringTypeLoc()

void llvm::DwarfDebug::addStringTypeLoc ( const DIStringType * ST,
unsigned Loc )
inline

Definition at line 913 of file DwarfDebug.h.

References assert().

◆ addSubprogramNames()

void DwarfDebug::addSubprogramNames ( const DwarfUnit & Unit,
const DICompileUnit::DebugNameTableKind NameTableKind,
const DISubprogram * SP,
DIE & Die )

Definition at line 481 of file DwarfDebug.cpp.

References addAccelName(), addAccelObjC(), llvm::Apple, llvm::DICompileUnit::Apple, llvm::GlobalValue::dropLLVMManglingEscape(), getAccelTableKind(), getObjCClassCategory(), getObjCMethodName(), isObjCClass(), llvm::LinkageName, llvm::DICompileUnit::None, and useAllLinkageNames().

◆ alwaysUseRanges()

bool DwarfDebug::alwaysUseRanges ( const DwarfCompileUnit & CU) const

Returns whether range encodings should be used for single entry range lists.

Definition at line 4126 of file DwarfDebug.cpp.

References Default, Ranges, and useSplitDwarf().

◆ beginCodeAlignment()

void DwarfDebug::beginCodeAlignment ( const MachineBasicBlock & MBB)
overridevirtual

Process beginning of code alignment.

Reimplemented from llvm::AsmPrinterHandler.

Definition at line 4136 of file DwarfDebug.cpp.

References llvm::DebugHandlerBase::Asm, llvm::MCDwarfLineEntry::make(), MBB, and llvm::DICompileUnit::NoDebug.

◆ beginFunctionImpl()

void DwarfDebug::beginFunctionImpl ( const MachineFunction * MF)
overrideprotectedvirtual

Gather pre-function debug information.

Implements llvm::DebugHandlerBase.

Definition at line 2652 of file DwarfDebug.cpp.

References llvm::DebugHandlerBase::Asm, assert(), emitInitialLocDirective(), getDwarfCompileUnitIDForLineTable(), llvm::MachineFunction::getFunction(), llvm::Function::getSubprogram(), KeyInstructionsAreStmts, llvm::DebugHandlerBase::LScopes, llvm::DICompileUnit::NoDebug, and llvm::DebugHandlerBase::PrologEndLoc.

◆ beginInstruction()

void DwarfDebug::beginInstruction ( const MachineInstr * MI)
overridevirtual

Process beginning of an instruction.

Reimplemented from llvm::DebugHandlerBase.

Definition at line 2017 of file DwarfDebug.cpp.

References llvm::MachineInstr::AnyInBundle, llvm::DebugHandlerBase::Asm, assert(), llvm::DebugHandlerBase::beginInstruction(), llvm::DebugHandlerBase::CurMI, llvm::Disable, DL, DWARF2_FLAG_EPILOGUE_BEGIN, DWARF2_FLAG_IS_STMT, DWARF2_FLAG_PROLOGUE_END, llvm::Enable, llvm::DebugHandlerBase::EpilogBeginBlock, llvm::MachineInstr::FrameDestroy, llvm::MachineInstr::FrameSetup, llvm::MachineFunction::getFunction(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::Function::getSubprogram(), llvm::MachineFunction::getSubtarget(), KeyInstructionsAreStmts, MBB, MI, llvm::DICompileUnit::NoDebug, llvm::DebugHandlerBase::PrevInstBB, llvm::DebugHandlerBase::PrevInstLoc, llvm::DebugHandlerBase::PrevLabel, llvm::DebugHandlerBase::PrologEndLoc, llvm::DebugHandlerBase::requestLabelAfterInsn(), llvm::DebugHandlerBase::requestLabelBeforeInsn(), TII, and UnknownLocations.

◆ beginModule()

void DwarfDebug::beginModule ( Module * M)
overridevirtual

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

Reimplemented from llvm::DebugHandlerBase.

Definition at line 1161 of file DwarfDebug.cpp.

References llvm::DebugHandlerBase::Asm, assert(), llvm::DebugHandlerBase::beginModule(), llvm::cast(), llvm::dyn_cast(), getDwarfVersion(), llvm::Global, llvm::detail::DenseSetImpl< ValueT, MapTy, ValueInfoT >::insert(), llvm::DwarfFile::setRnglistsTableBaseSym(), sortGlobalExprs(), useSegmentedStringOffsetsTable(), and useSplitDwarf().

◆ emitDebugEntryValues()

bool llvm::DwarfDebug::emitDebugEntryValues ( ) const
inline

Definition at line 836 of file DwarfDebug.h.

◆ 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 3040 of file DwarfDebug.cpp.

References llvm::DebugHandlerBase::Asm, assert(), llvm::Data, llvm::ByteStreamer::emitDIERef(), llvm::ByteStreamer::emitInt8(), I, llvm::Length, and llvm::Offset.

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 3211 of file DwarfDebug.cpp.

References llvm::DebugHandlerBase::Asm, emitDebugLocEntry(), and getDwarfVersion().

◆ emitDebugLocValue()

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

Definition at line 3084 of file DwarfDebug.cpp.

References llvm::DwarfExpression::addBooleanConstant(), llvm::DwarfExpression::addConstantFP(), llvm::DwarfExpression::addExpression(), llvm::DwarfExpression::addFragmentOffset(), llvm::DwarfExpression::addMachineRegExpression(), llvm::DwarfExpression::addSignedConstant(), llvm::DwarfExpression::addUnsignedConstant(), llvm::DwarfExpression::addWasmLocation(), llvm::any_of(), assert(), llvm::DwarfExpression::beginEntryValueExpression(), llvm::dbgs(), llvm::AsmPrinter::getDwarfDebug(), llvm::AsmPrinter::getDwarfVersion(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MachineFunction::getSubtarget(), llvm::TargetMachine::getTargetTriple(), llvm::Triple::isWasm(), LLVM_DEBUG, llvm::AsmPrinter::MF, llvm::DwarfExpression::setLocation(), llvm::DwarfExpression::setMemoryLocationKind(), llvm::AsmPrinter::TM, TRI, and tuneForSCE().

Referenced by llvm::DwarfCompileUnit::constructCallSiteParmEntryDIEs(), and llvm::DebugLocEntry::finalize().

◆ emitInitialLocDirective()

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

Emits inital debug location directive.

Returns instruction at which the function prologue ends.

Definition at line 2347 of file DwarfDebug.cpp.

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

Referenced by beginFunctionImpl().

◆ endFunctionImpl()

void DwarfDebug::endFunctionImpl ( const MachineFunction * MF)
overrideprotectedvirtual

Gather and emit post-function debug information.

Implements llvm::DebugHandlerBase.

Definition at line 2713 of file DwarfDebug.cpp.

References addArangeLabel(), llvm::DwarfCompileUnit::addRange(), llvm::DebugHandlerBase::Asm, assert(), llvm::cast(), llvm::DwarfCompileUnit::constructSubprogramScopeDIE(), llvm::DwarfCompileUnit::createAbstractEntity(), llvm::DwarfUnit::getCUNode(), llvm::DICompileUnit::getDebugInfoForProfiling(), llvm::DICompileUnit::getEmissionKind(), llvm::DwarfCompileUnit::getExistingAbstractEntity(), llvm::MachineFunction::getFunction(), getRetainedNodeScope(), llvm::LexicalScope::getScopeNode(), llvm::DwarfCompileUnit::getSkeleton(), llvm::DICompileUnit::getSplitDebugInlining(), llvm::Function::getSubprogram(), llvm::detail::DenseSetImpl< ValueT, MapTy, ValueInfoT >::insert(), llvm::isa(), llvm::DICompileUnit::isDebugDirectivesOnly(), llvm::DICompileUnit::LineTablesOnly, llvm::DebugHandlerBase::LScopes, and llvm::DebugHandlerBase::PrevLabel.

◆ endModule()

void DwarfDebug::endModule ( )
overridevirtual

Emit all Dwarf sections that should come after the content.

Implements llvm::AsmPrinterHandler.

Definition at line 1422 of file DwarfDebug.cpp.

References llvm::Apple, llvm::DebugHandlerBase::Asm, assert(), llvm::cast(), llvm::DebugHandlerBase::CurMI, D(), llvm::Default, llvm::Dwarf, llvm::dyn_cast(), getAccelTableKind(), llvm::isa_and_nonnull(), llvm_unreachable, llvm::None, P, terminateLineTable(), and useSplitDwarf().

◆ generateTypeUnits()

bool llvm::DwarfDebug::generateTypeUnits ( ) const
inline

Returns whether to generate DWARF v4 type units.

Definition at line 808 of file DwarfDebug.h.

◆ getAccelTableKind()

AccelTableKind llvm::DwarfDebug::getAccelTableKind ( ) const
inline

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

Definition at line 813 of file DwarfDebug.h.

Referenced by addAccelObjC(), addDwarfTypeUnitType(), addSubprogramNames(), and endModule().

◆ getAddressPool()

AddressPool & llvm::DwarfDebug::getAddressPool ( )
inline

Definition at line 879 of file DwarfDebug.h.

Referenced by emitRangeList().

◆ getCurrentDWARF5AccelTable()

DWARF5AccelTable & llvm::DwarfDebug::getCurrentDWARF5AccelTable ( )
inline

Returns either CU or TU DWARF5AccelTable.

Definition at line 955 of file DwarfDebug.h.

◆ getCurrentFunction()

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

Definition at line 897 of file DwarfDebug.h.

◆ getDebugLocs()

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

Returns the entries for the .debug_loc section.

Definition at line 863 of file DwarfDebug.h.

Referenced by emitLocList(), emitLoclistsTableHeader(), and llvm::DIELocList::emitValue().

◆ getDwarfCompileUnitIDForLineTable()

unsigned DwarfDebug::getDwarfCompileUnitIDForLineTable ( const DwarfCompileUnit & CU)
protected

Get Dwarf compile unit ID for line table.

Definition at line 2681 of file DwarfDebug.cpp.

References llvm::DebugHandlerBase::Asm.

Referenced by beginFunctionImpl(), and terminateLineTable().

◆ getDwarfSectionOffsetForm()

dwarf::Form DwarfDebug::getDwarfSectionOffsetForm ( ) const

Returns a suitable DWARF form to represent a section offset, i.e.

  • DW_FORM_sec_offset for DWARF version >= 4;
  • DW_FORM_data8 for 64-bit DWARFv3;
  • DW_FORM_data4 for 32-bit DWARFv3 and DWARFv2.

Definition at line 4089 of file DwarfDebug.cpp.

References llvm::DebugHandlerBase::Asm, and assert().

◆ getDwarfVersion()

uint16_t DwarfDebug::getDwarfVersion ( ) const

Returns the Dwarf Version.

Definition at line 4085 of file DwarfDebug.cpp.

References llvm::DebugHandlerBase::Asm.

Referenced by addDwarfTypeUnitType(), beginModule(), emitDebugLocEntryLocation(), emitInitialLocDirective(), emitRangeList(), emitRangeList(), GetCompileUnitType(), getMD5AsBytes(), and insertSectionLabel().

◆ getLocalDeclsForScope()

MDNodeSet & llvm::DwarfDebug::getLocalDeclsForScope ( const DILocalScope * S)
inline

Definition at line 940 of file DwarfDebug.h.

◆ getMD5AsBytes()

std::optional< MD5::MD5Result > DwarfDebug::getMD5AsBytes ( const DIFile * File) const

If the File has an MD5 checksum, return it as an MD5Result allocated in the MCContext.

Definition at line 4109 of file DwarfDebug.cpp.

References assert(), llvm::copy(), llvm::DIFile::CSK_MD5, llvm::fromHex(), and getDwarfVersion().

◆ getPrevCU()

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

Returns the previous CU that was being updated.

Definition at line 856 of file DwarfDebug.h.

◆ getSectionLabel()

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

Definition at line 4098 of file DwarfDebug.cpp.

Referenced by emitRangeList().

◆ getStringTypeLoc()

unsigned llvm::DwarfDebug::getStringTypeLoc ( const DIStringType * ST) const
inline

Definition at line 909 of file DwarfDebug.h.

◆ insertSectionLabel()

void DwarfDebug::insertSectionLabel ( const MCSymbol * S)

Definition at line 4102 of file DwarfDebug.cpp.

References getDwarfVersion(), llvm::MCSymbol::getIndex(), llvm::MCSymbol::getSection(), and useSplitDwarf().

◆ 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 523 of file DwarfDebug.cpp.

References llvm::DebugHandlerBase::getLabelAfterInsn(), and Ranges.

◆ lookupCU() [1/2]

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

Find the matching DwarfCompileUnit for the given CU DIE.

Definition at line 904 of file DwarfDebug.h.

◆ lookupCU() [2/2]

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

Definition at line 905 of file DwarfDebug.h.

◆ makeTypeSignature()

uint64_t DwarfDebug::makeTypeSignature ( StringRef Identifier)
static

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

Definition at line 3886 of file DwarfDebug.cpp.

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

Referenced by addDwarfTypeUnitType().

◆ setCurrentDWARF5AccelTable()

void llvm::DwarfDebug::setCurrentDWARF5AccelTable ( const DWARF5AccelTableKind Kind)
inline

Sets the current DWARF5AccelTable to use.

Definition at line 945 of file DwarfDebug.h.

References CU, and TU.

Referenced by addDwarfTypeUnitType().

◆ setPrevCU()

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

Definition at line 857 of file DwarfDebug.h.

◆ 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.

Reimplemented from llvm::AsmPrinterHandler.

Definition at line 764 of file DwarfDebug.h.

References Size.

◆ setTheAccelTableKind()

void llvm::DwarfDebug::setTheAccelTableKind ( AccelTableKind K)
inline

Seet TheAccelTableKind.

Definition at line 816 of file DwarfDebug.h.

◆ shareAcrossDWOCUs()

bool DwarfDebug::shareAcrossDWOCUs ( ) const

Definition at line 547 of file DwarfDebug.cpp.

References SplitDwarfCrossCuReferences.

◆ skippedNonDebugFunction()

void DwarfDebug::skippedNonDebugFunction ( )
overrideprotectedvirtual

Reimplemented from llvm::DebugHandlerBase.

Definition at line 2701 of file DwarfDebug.cpp.

References terminateLineTable().

◆ terminateLineTable()

void DwarfDebug::terminateLineTable ( const DwarfCompileUnit * CU)

Terminate the line table by adding the last range label.

Definition at line 2692 of file DwarfDebug.cpp.

References llvm::DebugHandlerBase::Asm, and getDwarfCompileUnitIDForLineTable().

Referenced by endModule(), and skippedNonDebugFunction().

◆ useAddrOffsetExpressions()

bool llvm::DwarfDebug::useAddrOffsetExpressions ( ) const
inline

Definition at line 792 of file DwarfDebug.h.

References Expressions.

◆ useAddrOffsetForm()

bool llvm::DwarfDebug::useAddrOffsetForm ( ) const
inline

Definition at line 798 of file DwarfDebug.h.

References Form.

◆ 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 770 of file DwarfDebug.h.

Referenced by addSubprogramNames().

◆ useAppleExtensionAttributes()

bool llvm::DwarfDebug::useAppleExtensionAttributes ( ) const
inline

Definition at line 818 of file DwarfDebug.h.

◆ useDWARF2Bitfields()

bool llvm::DwarfDebug::useDWARF2Bitfields ( ) const
inline

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

Definition at line 778 of file DwarfDebug.h.

◆ 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 774 of file DwarfDebug.h.

◆ useInlineStrings()

bool llvm::DwarfDebug::useInlineStrings ( ) const
inline

Returns whether to use inline strings.

Definition at line 781 of file DwarfDebug.h.

◆ useOpConvert()

bool llvm::DwarfDebug::useOpConvert ( ) const
inline

Definition at line 840 of file DwarfDebug.h.

◆ useRangesSection()

bool llvm::DwarfDebug::useRangesSection ( ) const
inline

Returns whether ranges section should be emitted.

Definition at line 784 of file DwarfDebug.h.

◆ useSectionsAsReferences()

bool llvm::DwarfDebug::useSectionsAsReferences ( ) const
inline

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

Definition at line 803 of file DwarfDebug.h.

◆ 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 832 of file DwarfDebug.h.

Referenced by addDwarfTypeUnitType(), and beginModule().

◆ 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 824 of file DwarfDebug.h.

Referenced by addDwarfTypeUnitType(), alwaysUseRanges(), beginModule(), DwarfDebug(), llvm::emitDWARF5AccelTable(), emitMacroHeader(), llvm::DIELocList::emitValue(), endModule(), and insertSectionLabel().

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