DwarfDebug.cpp File Reference

#include "DwarfDebug.h"
#include "ByteStreamer.h"
#include "DIEHash.h"
#include "DebugLocEntry.h"
#include "DebugLocStream.h"
#include "DwarfCompileUnit.h"
#include "DwarfExpression.h"
#include "DwarfFile.h"
#include "DwarfUnit.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/MapVector.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/Triple.h"
#include "llvm/ADT/Twine.h"
#include "llvm/BinaryFormat/Dwarf.h"
#include "llvm/CodeGen/AccelTable.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/DIE.h"
#include "llvm/CodeGen/LexicalScopes.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/CodeGen/TargetLowering.h"
#include "llvm/CodeGen/TargetRegisterInfo.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/DebugInfo/DWARF/DWARFExpression.h"
#include "llvm/DebugInfo/DWARF/DWARFDataExtractor.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/IR/DebugLoc.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/GlobalVariable.h"
#include "llvm/IR/Module.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCDwarf.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCTargetOptions.h"
#include "llvm/MC/MachineLocation.h"
#include "llvm/MC/SectionKind.h"
#include "llvm/Pass.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MD5.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/Timer.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include <algorithm>
#include <cassert>
#include <cstddef>
#include <cstdint>
#include <iterator>
#include <string>
#include <utility>
#include <vector>

Go to the source code of this file.

Classes
struct	ArangeSpan

Macros
#define	DEBUG_TYPE   "dwarfdebug"

Enumerations
enum	DefaultOnOff {   Default, Enable, Disable, Default,   Enable, Disable }
enum	LinkageNameOption { DefaultLinkageNames, AllLinkageNames, AbstractLinkageNames }

Functions
	STATISTIC (NumCSParams, "Number of dbg call site params created")
static DbgValueLoc	getDebugLocValue (const MachineInstr *MI)
	Get .debug_loc entry for the instruction range starting at MI. More...
static AccelTableKind	computeAccelTableKind (unsigned DwarfVersion, bool GenerateTypeUnits, DebuggerKind Tuning, const Triple &TT)
static bool	isObjCClass (StringRef Name)
static bool	hasObjCCategory (StringRef Name)
static void	getObjCClassCategory (StringRef In, StringRef &Class, StringRef &Category)
static StringRef	getObjCMethodName (StringRef In)
template<typename Func >
static void	forBothCUs (DwarfCompileUnit &CU, Func F)
static void	collectCallSiteParameters (const MachineInstr *CallMI, ParamSet &Params)
	Try to interpret values loaded into registers that forward parameters for CallMI. More...
static SmallVectorImpl< DwarfCompileUnit::GlobalExpr > &	sortGlobalExprs (SmallVectorImpl< DwarfCompileUnit::GlobalExpr > &GVEs)
	Sort and unique GVEs by comparing their fragment offset. More...
static bool	validThroughout (LexicalScopes &LScopes, const MachineInstr *DbgValue, const MachineInstr *RangeEnd)
	Determine whether a singular DBG_VALUE is valid for the entirety of its enclosing lexical scope. More...
static DebugLoc	findPrologueEndLoc (const MachineFunction *MF)
static void	recordSourceLine (AsmPrinter &Asm, unsigned Line, unsigned Col, const MDNode *S, unsigned Flags, unsigned CUID, uint16_t DwarfVersion, ArrayRef< std::unique_ptr< DwarfCompileUnit >> DCUs)
	Register a source line with debug info. More...
static dwarf::PubIndexEntryDescriptor	computeIndexValue (DwarfUnit *CU, const DIE *Die)
	computeIndexValue - Compute the gdb index value for the DIE and CU. More...
static void	emitListsTableHeaderStart (AsmPrinter *Asm, MCSymbol *TableStart, MCSymbol *TableEnd)
static MCSymbol *	emitRnglistsTableHeader (AsmPrinter *Asm, const DwarfFile &Holder)
static MCSymbol *	emitLoclistsTableHeader (AsmPrinter *Asm, const DwarfDebug &DD)
template<typename Ranges , typename PayloadEmitter >
static void	emitRangeList (DwarfDebug &DD, AsmPrinter *Asm, MCSymbol *Sym, const Ranges &R, const DwarfCompileUnit &CU, unsigned BaseAddressx, unsigned OffsetPair, unsigned StartxLength, unsigned EndOfList, StringRef(*StringifyEnum)(unsigned), bool ShouldUseBaseAddress, PayloadEmitter EmitPayload)
static void	emitLocList (DwarfDebug &DD, AsmPrinter *Asm, const DebugLocStream::List &List)
static void	emitRangeList (DwarfDebug &DD, AsmPrinter *Asm, const RangeSpanList &List)
	Emit a single range list. We handle both DWARF v5 and earlier. More...
static void	emitDebugRangesImpl (DwarfDebug &DD, AsmPrinter *Asm, const DwarfFile &Holder, MCSymbol *TableEnd)

Variables
static cl::opt< bool >	DisableDebugInfoPrinting ("disable-debug-info-print", cl::Hidden, cl::desc("Disable debug info printing"))
static cl::opt< bool >	UseDwarfRangesBaseAddressSpecifier ("use-dwarf-ranges-base-address-specifier", cl::Hidden, cl::desc("Use base address specifiers in debug_ranges"), cl::init(false))
static cl::opt< bool >	GenerateARangeSection ("generate-arange-section", cl::Hidden, cl::desc("Generate dwarf aranges"), cl::init(false))
static cl::opt< bool >	GenerateDwarfTypeUnits ("generate-type-units", cl::Hidden, cl::desc("Generate DWARF4 type units."), cl::init(false))
static cl::opt< bool >	SplitDwarfCrossCuReferences ("split-dwarf-cross-cu-references", cl::Hidden, cl::desc("Enable cross-cu references in DWO files"), cl::init(false))
static cl::opt< DefaultOnOff >	UnknownLocations ("use-unknown-locations", cl::Hidden, cl::desc("Make an absence of debug location information explicit."), cl::values(clEnumVal(Default, "At top of block or after label"), clEnumVal(Enable, "In all cases"), clEnumVal(Disable, "Never")), cl::init(Default))
static cl::opt< AccelTableKind >	AccelTables ("accel-tables", cl::Hidden, cl::desc("Output dwarf accelerator tables."), cl::values(clEnumValN(AccelTableKind::Default, "Default", "Default for platform"), clEnumValN(AccelTableKind::None, "Disable", "Disabled."), clEnumValN(AccelTableKind::Apple, "Apple", "Apple"), clEnumValN(AccelTableKind::Dwarf, "Dwarf", "DWARF")), cl::init(AccelTableKind::Default))
static cl::opt< DefaultOnOff >	DwarfInlinedStrings ("dwarf-inlined-strings", cl::Hidden, cl::desc("Use inlined strings rather than string section."), cl::values(clEnumVal(Default, "Default for platform"), clEnumVal(Enable, "Enabled"), clEnumVal(Disable, "Disabled")), cl::init(Default))
static cl::opt< bool >	NoDwarfRangesSection ("no-dwarf-ranges-section", cl::Hidden, cl::desc("Disable emission .debug_ranges section."), cl::init(false))
static cl::opt< DefaultOnOff >	DwarfSectionsAsReferences ("dwarf-sections-as-references", cl::Hidden, cl::desc("Use sections+offset as references rather than labels."), cl::values(clEnumVal(Default, "Default for platform"), clEnumVal(Enable, "Enabled"), clEnumVal(Disable, "Disabled")), cl::init(Default))
static cl::opt< LinkageNameOption >	DwarfLinkageNames ("dwarf-linkage-names", cl::Hidden, cl::desc("Which DWARF linkage-name attributes to emit."), cl::values(clEnumValN(DefaultLinkageNames, "Default", "Default for platform"), clEnumValN(AllLinkageNames, "All", "All"), clEnumValN(AbstractLinkageNames, "Abstract", "Abstract subprograms")), cl::init(DefaultLinkageNames))
static const char *const	DWARFGroupName = "dwarf"
static const char *const	DWARFGroupDescription = "DWARF Emission"
static const char *const	DbgTimerName = "writer"
static const char *const	DbgTimerDescription = "DWARF Debug Writer"
static constexpr unsigned	ULEB128PadSize = 4

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "dwarfdebug"

Definition at line 86 of file DwarfDebug.cpp.

Enumeration Type Documentation

DefaultOnOff

enum DefaultOnOff

Enumerator
Default
Enable
Disable
Default
Enable
Disable

Definition at line 112 of file DwarfDebug.cpp.

LinkageNameOption

enum LinkageNameOption

Enumerator
DefaultLinkageNames
AllLinkageNames
AbstractLinkageNames

Definition at line 150 of file DwarfDebug.cpp.

Function Documentation

collectCallSiteParameters()

static void collectCallSiteParameters ( const MachineInstr *  CallMI, ParamSet &  Params  )

static

Try to interpret values loaded into registers that forward parameters for CallMI.

Store parameters with interpreted value into Params.

Definition at line 540 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::constructCallSiteEntryDIE(), llvm::DwarfCompileUnit::constructCallSiteParmEntryDIEs(), llvm::DwarfCompileUnit::constructImportedEntityDIE(), D, llvm::dbgs(), llvm::dwarf::DW_OP_LLVM_entry_value, llvm::dyn_cast(), llvm::SmallVectorBase::empty(), llvm::StringRef::empty(), llvm::TargetOptions::EnableDebugEntryValues, llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::end(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::find(), llvm::MDNode::get(), llvm::MachineFunction::getCallSitesInfo(), llvm::DIScope::getDirectory(), llvm::DwarfCompileUnit::getDwarf5OrGNUAttr(), llvm::DwarfDebug::getDwarfVersion(), llvm::DICompileUnit::getDWOId(), llvm::DIScope::getFile(), llvm::DIScope::getFilename(), llvm::DICompileUnit::getFlags(), llvm::TargetRegisterInfo::getFrameRegister(), llvm::DebugHandlerBase::getFunctionLocalOffsetAfterInsn(), llvm::MachineOperand::getGlobal(), llvm::DICompileUnit::getImportedEntities(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::DebugHandlerBase::getLabelAfterInsn(), llvm::MachineInstr::getMF(), llvm::Value::getName(), llvm::DwarfUnit::getOrCreateContextDIE(), llvm::MachineInstr::getParent(), llvm::DICompileUnit::getProducer(), llvm::MachineOperand::getReg(), llvm::DICompileUnit::getRetainedTypes(), llvm::ilist_node_impl< OptionsT >::getReverseIterator(), llvm::DICompileUnit::getRuntimeVersion(), llvm::DIImportedEntity::getScope(), llvm::DIScope::getSource(), llvm::DICompileUnit::getSourceLanguage(), llvm::DICompileUnit::getSplitDebugFilename(), llvm::Function::getSubprogram(), llvm::MachineFunction::getSubtarget(), llvm::DIEUnit::getUnitDie(), llvm::DwarfFile::getUnits(), llvm::DwarfCompileUnit::hasDwarfPubSections(), I, llvm::ARM_PROC::IE, llvm::RegState::Implicit, llvm::DwarfCompileUnit::initStmtList(), llvm::detail::DenseSetImpl< ValueT, MapTy, ValueInfoT >::insert(), llvm::TargetRegisterInfo::isCalleeSavedPhysReg(), llvm::MachineInstr::isDebugInstr(), llvm::MachineOperand::isGlobal(), llvm::DICompileUnit::isOptimized(), llvm::Register::isPhysicalRegister(), llvm::MachineOperand::isReg(), llvm::TargetInstrInfo::isTailCall(), LLVM_DEBUG, MI, N, llvm::MachineInstr::operands(), llvm::TargetMachine::Options, llvm::SmallVectorTemplateBase< T, bool >::push_back(), Reg, llvm::TargetRegisterInfo::regsOverlap(), llvm::StringRef::str(), TII, llvm::AsmPrinter::TM, llvm::DwarfDebug::tuneForGDB(), llvm::DwarfDebug::tuneForLLDB(), llvm::DwarfDebug::useAppleExtensionAttributes(), llvm::DwarfDebug::useSegmentedStringOffsetsTable(), and llvm::DwarfDebug::useSplitDwarf().

computeAccelTableKind()

static AccelTableKind computeAccelTableKind ( unsigned  DwarfVersion, bool  GenerateTypeUnits, DebuggerKind  Tuning, const Triple &  TT  )

static

Definition at line 320 of file DwarfDebug.cpp.

References AccelTables, llvm::Apple, llvm::Default, llvm::Dwarf, llvm::Triple::isOSBinFormatMachO(), llvm::LLDB, and llvm::None.

Referenced by llvm::DwarfDebug::DwarfDebug().

computeIndexValue()

static dwarf::PubIndexEntryDescriptor computeIndexValue ( DwarfUnit *  CU, const DIE *  Die  )

static

computeIndexValue - Compute the gdb index value for the DIE and CU.

Definition at line 1988 of file DwarfDebug.cpp.

References llvm::DebugHandlerBase::Asm, llvm::AsmPrinter::createTempSymbol(), llvm::dwarf::DW_PUBNAMES_VERSION, llvm::AsmPrinter::EmitDwarfOffset(), llvm::AsmPrinter::emitDwarfSymbolReference(), llvm::AsmPrinter::emitInt16(), llvm::AsmPrinter::emitInt32(), llvm::AsmPrinter::emitInt8(), llvm::AsmPrinter::EmitLabelDifference(), llvm::DwarfFile::emitStrings(), llvm::DIE::findAttribute(), llvm::dwarf::GDBIndexEntryKindString(), llvm::dwarf::GDBIndexEntryLinkageString(), llvm::MCSection::getBeginSymbol(), llvm::DwarfUnit::getCUNode(), llvm::DIEUnit::getDebugSectionOffset(), llvm::MCObjectFileInfo::getDwarfGnuPubNamesSection(), llvm::MCObjectFileInfo::getDwarfGnuPubTypesSection(), llvm::MCObjectFileInfo::getDwarfPubNamesSection(), llvm::MCObjectFileInfo::getDwarfPubTypesSection(), llvm::MCObjectFileInfo::getDwarfStrOffSection(), llvm::MCObjectFileInfo::getDwarfStrSection(), llvm::DwarfCompileUnit::getGlobalNames(), llvm::DwarfCompileUnit::getGlobalTypes(), llvm::DwarfCompileUnit::getLabelBegin(), llvm::DwarfUnit::getLanguage(), llvm::DwarfCompileUnit::getLength(), llvm::DICompileUnit::getNameTableKind(), llvm::AsmPrinter::getObjFileLowering(), llvm::DIE::getOffset(), llvm::DIEUnit::getSection(), llvm::DwarfCompileUnit::getSkeleton(), llvm::DIE::getTag(), llvm::dwarf::GIEK_FUNCTION, llvm::dwarf::GIEK_NONE, llvm::dwarf::GIEK_TYPE, llvm::dwarf::GIEK_VARIABLE, llvm::dwarf::GIEL_EXTERNAL, llvm::dwarf::GIEL_STATIC, llvm::DICompileUnit::GNU, llvm::DwarfCompileUnit::hasDwarfPubSections(), llvm::dwarf::isCPlusPlus(), llvm::dwarf::PubIndexEntryDescriptor::Kind, llvm::dwarf::PubIndexEntryDescriptor::Linkage, Name, llvm::AsmPrinter::OutStreamer, llvm::dwarf::PubIndexEntryDescriptor::toBits(), llvm::DwarfDebug::useSectionsAsReferences(), llvm::DwarfDebug::useSegmentedStringOffsetsTable(), and llvm::DwarfDebug::useSplitDwarf().

emitDebugRangesImpl()

static void emitDebugRangesImpl ( DwarfDebug &  DD, AsmPrinter *  Asm, const DwarfFile &  Holder, MCSymbol *  TableEnd  )

static

Definition at line 2651 of file DwarfDebug.cpp.

References llvm::all_of(), llvm::DebugHandlerBase::Asm, assert(), llvm::dwarf::DW_MACINFO_end_file, llvm::dwarf::DW_MACINFO_start_file, llvm::AsmPrinter::emitInt8(), emitRangeList(), emitRnglistsTableHeader(), llvm::AsmPrinter::EmitULEB128(), llvm::StringRef::empty(), F(), llvm::DwarfUnit::getCUNode(), llvm::DIScope::getDirectory(), llvm::MCObjectFileInfo::getDwarfAbbrevDWOSection(), llvm::MCObjectFileInfo::getDwarfAddrSection(), llvm::MCObjectFileInfo::getDwarfInfoSection(), llvm::MCObjectFileInfo::getDwarfLineDWOSection(), llvm::MCObjectFileInfo::getDwarfMacinfoSection(), llvm::MCObjectFileInfo::getDwarfRangesSection(), llvm::MCObjectFileInfo::getDwarfRnglistsDWOSection(), llvm::MCObjectFileInfo::getDwarfRnglistsSection(), llvm::MCObjectFileInfo::getDwarfStrDWOSection(), llvm::MCObjectFileInfo::getDwarfStrOffDWOSection(), llvm::DwarfDebug::getDwarfVersion(), llvm::DIMacroFile::getElements(), llvm::DIScope::getFile(), llvm::DIMacroFile::getFile(), llvm::DIScope::getFilename(), llvm::DIMacro::getLine(), llvm::DIMacroFile::getLine(), llvm::DIMacroNode::getMacinfoType(), llvm::DwarfCompileUnit::getMacroLabelBegin(), llvm::DwarfUnit::getMD5AsBytes(), llvm::DIMacro::getName(), llvm::AsmPrinter::getObjFileLowering(), llvm::DwarfCompileUnit::getOrCreateSourceID(), llvm::DwarfFile::getRangeLists(), llvm::DwarfCompileUnit::getSkeleton(), llvm::DIScope::getSource(), llvm::DwarfCompileUnit::getUniqueID(), llvm::DIEUnit::getUnitDie(), llvm::DIMacro::getValue(), llvm::DICompileUnit::isDebugDirectivesOnly(), List, llvm_unreachable, llvm::none_of(), llvm::AsmPrinter::OutStreamer, P, llvm::DIEUnit::setSection(), llvm::DwarfDebug::useRangesSection(), llvm::DwarfDebug::useSegmentedStringOffsetsTable(), and llvm::DwarfDebug::useSplitDwarf().

emitListsTableHeaderStart()

static void emitListsTableHeaderStart ( AsmPrinter *  Asm, MCSymbol *  TableStart, MCSymbol *  TableEnd  )

static

Definition at line 2267 of file DwarfDebug.cpp.

References llvm::AsmPrinter::emitInt16(), llvm::AsmPrinter::emitInt8(), llvm::AsmPrinter::EmitLabelDifference(), llvm::MCAsmInfo::getCodePointerSize(), llvm::AsmPrinter::MAI, and llvm::AsmPrinter::OutStreamer.

Referenced by emitLoclistsTableHeader(), and emitRnglistsTableHeader().

emitLocList()

static void emitLocList ( DwarfDebug &  DD, AsmPrinter *  Asm, const DebugLocStream::List &  List  )

static

Definition at line 2421 of file DwarfDebug.cpp.

References llvm::DebugLocStream::List::CU, E, llvm::DwarfDebug::emitDebugLocEntryLocation(), llvm::AsmPrinter::emitInt8(), llvm::AsmPrinter::EmitLabelDifference(), emitLoclistsTableHeader(), emitRangeList(), llvm::AsmPrinter::EmitULEB128(), llvm::Entry::End, llvm::DwarfDebug::getDebugLocs(), llvm::MCObjectFileInfo::getDwarfLocDWOSection(), llvm::MCObjectFileInfo::getDwarfLoclistsSection(), llvm::MCObjectFileInfo::getDwarfLocSection(), llvm::DwarfDebug::getDwarfVersion(), llvm::DebugLocStream::getEntries(), llvm::AddressPool::getIndex(), llvm::DebugLocStream::getLists(), llvm::AsmPrinter::getObjFileLowering(), llvm::DebugLocStream::List::Label, List, llvm::dwarf::LocListEncodingString(), and llvm::AsmPrinter::OutStreamer.

emitLoclistsTableHeader()

static MCSymbol* emitLoclistsTableHeader ( AsmPrinter *  Asm, const DwarfDebug &  DD  )

static

Definition at line 2308 of file DwarfDebug.cpp.

References llvm::AsmPrinter::createTempSymbol(), llvm::AsmPrinter::emitInt32(), emitListsTableHeaderStart(), llvm::DwarfDebug::getDebugLocs(), llvm::DebugLocStream::getSym(), and llvm::AsmPrinter::OutStreamer.

Referenced by emitLocList().

emitRangeList() [1/2]

template<typename Ranges , typename PayloadEmitter >

static void emitRangeList ( DwarfDebug &  DD, AsmPrinter *  Asm, MCSymbol *  Sym, const Ranges &  R, const DwarfCompileUnit &  CU, unsigned  BaseAddressx, unsigned  OffsetPair, unsigned  StartxLength, unsigned  EndOfList, StringRef(*)(unsigned)  StringifyEnum, bool  ShouldUseBaseAddress, PayloadEmitter  EmitPayload  )

static

Definition at line 2326 of file DwarfDebug.cpp.

References assert(), llvm::AsmPrinter::emitInt8(), llvm::AsmPrinter::EmitULEB128(), llvm::DwarfDebug::getAddressPool(), llvm::DwarfCompileUnit::getBaseAddress(), llvm::MCAsmInfo::getCodePointerSize(), llvm::DwarfDebug::getDwarfVersion(), llvm::AddressPool::getIndex(), llvm::MCSymbol::getSection(), llvm::DwarfDebug::getSectionLabel(), llvm::AsmPrinter::MAI, llvm::AsmPrinter::OutStreamer, P, and Size.

Referenced by emitDebugRangesImpl(), emitLocList(), and emitRangeList().

emitRangeList() [2/2]

static void emitRangeList ( DwarfDebug &  DD, AsmPrinter *  Asm, const RangeSpanList &  List  )

static

Emit a single range list. We handle both DWARF v5 and earlier.

Definition at line 2640 of file DwarfDebug.cpp.

References emitRangeList(), llvm::RangeSpanList::getCU(), llvm::DwarfUnit::getCUNode(), llvm::DwarfDebug::getDwarfVersion(), llvm::RangeSpanList::getRanges(), llvm::DICompileUnit::getRangesBaseAddress(), llvm::RangeSpanList::getSym(), and llvm::dwarf::RangeListEncodingString().

emitRnglistsTableHeader()

static MCSymbol* emitRnglistsTableHeader ( AsmPrinter *  Asm, const DwarfFile &  Holder  )

static

Definition at line 2288 of file DwarfDebug.cpp.

References llvm::AsmPrinter::createTempSymbol(), llvm::AsmPrinter::emitInt32(), llvm::AsmPrinter::EmitLabelDifference(), emitListsTableHeaderStart(), llvm::DwarfFile::getRangeLists(), llvm::DwarfFile::getRnglistsTableBaseSym(), List, and llvm::AsmPrinter::OutStreamer.

Referenced by emitDebugRangesImpl().

findPrologueEndLoc()

static DebugLoc findPrologueEndLoc ( const MachineFunction *  MF )

static

Definition at line 1726 of file DwarfDebug.cpp.

References llvm::MachineInstr::FrameSetup, and MI.

Referenced by llvm::DwarfDebug::emitInitialLocDirective().

forBothCUs()

template<typename Func >

static void forBothCUs ( DwarfCompileUnit &  CU, Func  F  )

static

Definition at line 502 of file DwarfDebug.cpp.

References F(), llvm::DwarfUnit::getCUNode(), llvm::DwarfCompileUnit::getSkeleton(), and llvm::DICompileUnit::getSplitDebugInlining().

Referenced by llvm::DwarfDebug::beginModule().

getDebugLocValue()

static DbgValueLoc getDebugLocValue ( const MachineInstr *  MI )

static

Get .debug_loc entry for the instruction range starting at MI.

Definition at line 232 of file DwarfDebug.cpp.

References assert(), llvm::MachineOperand::getCImm(), llvm::MachineInstr::getDebugExpression(), llvm::MachineOperand::getFPImm(), llvm::MachineOperand::getImm(), llvm::MachineInstr::getNumOperands(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::isCImm(), llvm::MachineOperand::isFPImm(), llvm::MachineOperand::isImm(), llvm::MachineOperand::isReg(), and llvm_unreachable.

Referenced by llvm::DbgVariable::initializeDbgValue(), and validThroughout().

getObjCClassCategory()

static void getObjCClassCategory ( StringRef  In, StringRef &  Class, StringRef &  Category  )

static

Definition at line 434 of file DwarfDebug.cpp.

References llvm::StringRef::find(), hasObjCCategory(), and llvm::StringRef::slice().

Referenced by llvm::DwarfDebug::addSubprogramNames().

getObjCMethodName()

static StringRef getObjCMethodName ( StringRef  In )

static

Definition at line 446 of file DwarfDebug.cpp.

References llvm::StringRef::find(), and llvm::StringRef::slice().

Referenced by llvm::DwarfDebug::addSubprogramNames().

hasObjCCategory()

static bool hasObjCCategory ( StringRef  Name )

static

Definition at line 427 of file DwarfDebug.cpp.

References llvm::StringRef::find(), isObjCClass(), and llvm::StringRef::npos.

Referenced by getObjCClassCategory().

isObjCClass()

static bool isObjCClass ( StringRef  Name )

static

Definition at line 423 of file DwarfDebug.cpp.

References llvm::StringRef::startswith().

Referenced by llvm::DwarfDebug::addSubprogramNames(), and hasObjCCategory().

recordSourceLine()

static void recordSourceLine ( AsmPrinter &  Asm, unsigned  Line, unsigned  Col, const MDNode *  S, unsigned  Flags, unsigned  CUID, uint16_t  DwarfVersion, ArrayRef< std::unique_ptr< DwarfCompileUnit >>  DCUs  )

static

Register a source line with debug info.

Returns the unique label that was emitted and which provides correspondence to the source line list.

Definition at line 1739 of file DwarfDebug.cpp.

References llvm::AsmPrinter::OutStreamer.

sortGlobalExprs()

static SmallVectorImpl<DwarfCompileUnit::GlobalExpr>& sortGlobalExprs ( SmallVectorImpl< DwarfCompileUnit::GlobalExpr > &  GVEs )

static

Sort and unique GVEs by comparing their fragment offset.

Definition at line 901 of file DwarfDebug.cpp.

References B, llvm::SmallVectorTemplateCommon< T >::begin(), llvm::SmallVectorTemplateCommon< T >::end(), llvm::SmallVectorImpl< T >::erase(), llvm::DwarfCompileUnit::GlobalExpr::Expr, llvm::DIExpression::getFragmentInfo(), and llvm::sort().

Referenced by llvm::DwarfDebug::beginModule().

STATISTIC()

STATISTIC	(	NumCSParams	,
		"Number of dbg call site params created"
	)

validThroughout()

static bool validThroughout ( LexicalScopes &  LScopes, const MachineInstr *  DbgValue, const MachineInstr *  RangeEnd  )

static

Determine whether a singular DBG_VALUE is valid for the entirety of its enclosing lexical scope.

The check ensures there are no other instructions in the same lexical scope preceding the DBG_VALUE and that its range is either open or otherwise rolls off the end of the scope.

Definition at line 1298 of file DwarfDebug.cpp.

References llvm::DwarfFile::addScopeLabel(), llvm::DwarfFile::addScopeVariable(), llvm::DebugHandlerBase::Asm, assert(), llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::detail::DenseSetImpl< ValueT, DenseMap< ValueT, detail::DenseSetEmpty, ValueInfoT, detail::DenseSetPair< ValueT > >, ValueInfoT >::count(), llvm::dbgs(), llvm::DebugHandlerBase::DbgValues, llvm::SmallVectorImpl< T >::emplace_back(), llvm::SmallVectorBase::empty(), llvm::SmallVectorTemplateCommon< T, typename >::end(), llvm::SmallVectorTemplateCommon< T >::end(), llvm::SmallVectorImpl< T >::erase(), llvm::LexicalScopes::findInlinedScope(), llvm::LexicalScopes::findLexicalScope(), llvm::MachineInstr::FrameSetup, llvm::MachineInstr::getDebugExpression(), llvm::MachineInstr::getDebugLoc(), getDebugLocValue(), llvm::AsmPrinter::getFunctionEnd(), llvm::DebugHandlerBase::getLabelAfterInsn(), llvm::DebugHandlerBase::getLabelBeforeInsn(), llvm::MachineInstr::getOperand(), llvm::MachineInstr::getParent(), llvm::LexicalScope::getRanges(), llvm::DILocalVariable::getScope(), llvm::LexicalScope::getScopeNode(), I, llvm::detail::DenseSetImpl< ValueT, DenseMap< ValueT, detail::DenseSetEmpty, ValueInfoT, detail::DenseSetPair< ValueT > >, ValueInfoT >::insert(), llvm::DIExpression::isFragment(), llvm::MachineOperand::isImm(), llvm::MachineInstr::isUndefDebugValue(), LLVM_DEBUG, llvm::lltok::LocalVar, llvm::DebugHandlerBase::LScopes, llvm::SmallVectorTemplateBase< T >::pop_back(), llvm::SmallVectorTemplateBase< T >::push_back(), llvm::SmallVectorTemplateCommon< T >::rbegin(), llvm::remove_if(), llvm::SmallVectorTemplateCommon< T >::rend(), and llvm::SmallVectorBase::size().

Variable Documentation

AccelTables

cl::opt<AccelTableKind> AccelTables("accel-tables", cl::Hidden, cl::desc("Output dwarf accelerator tables."), cl::values(clEnumValN(AccelTableKind::Default, "Default", "Default for platform"), clEnumValN(AccelTableKind::None, "Disable", "Disabled."), clEnumValN(AccelTableKind::Apple, "Apple", "Apple"), clEnumValN(AccelTableKind::Dwarf, "Dwarf", "DWARF")), cl::init(AccelTableKind::Default))

static

Referenced by computeAccelTableKind().

DbgTimerDescription

const char* const DbgTimerDescription = "DWARF Debug Writer"

static

Definition at line 169 of file DwarfDebug.cpp.

DbgTimerName

const char* const DbgTimerName = "writer"

static

Definition at line 168 of file DwarfDebug.cpp.

DisableDebugInfoPrinting

cl::opt<bool> DisableDebugInfoPrinting("disable-debug-info-print", cl::Hidden, cl::desc("Disable debug info printing"))

static

Referenced by llvm::DwarfDebug::beginModule().

DWARFGroupDescription

const char* const DWARFGroupDescription = "DWARF Emission"

static

Definition at line 167 of file DwarfDebug.cpp.

DWARFGroupName

const char* const DWARFGroupName = "dwarf"

static

Definition at line 166 of file DwarfDebug.cpp.

DwarfInlinedStrings

cl::opt<DefaultOnOff> DwarfInlinedStrings("dwarf-inlined-strings", cl::Hidden, cl::desc("Use inlined strings rather than string section."), cl::values(clEnumVal(Default, "Default for platform"), clEnumVal(Enable, "Enabled"), clEnumVal(Disable, "Disabled")), cl::init(Default))

static

DwarfLinkageNames

cl::opt<LinkageNameOption> DwarfLinkageNames("dwarf-linkage-names", cl::Hidden, cl::desc("Which DWARF linkage-name attributes to emit."), cl::values(clEnumValN(DefaultLinkageNames, "Default", "Default for platform"), clEnumValN(AllLinkageNames, "All", "All"), clEnumValN(AbstractLinkageNames, "Abstract", "Abstract subprograms")), cl::init(DefaultLinkageNames))

static

Referenced by llvm::DwarfDebug::DwarfDebug().

DwarfSectionsAsReferences

cl::opt<DefaultOnOff> DwarfSectionsAsReferences("dwarf-sections-as-references", cl::Hidden, cl::desc("Use sections+offset as references rather than labels."), cl::values(clEnumVal(Default, "Default for platform"), clEnumVal(Enable, "Enabled"), clEnumVal(Disable, "Disabled")), cl::init(Default))

static

GenerateARangeSection

cl::opt<bool> GenerateARangeSection("generate-arange-section", cl::Hidden, cl::desc("Generate dwarf aranges"), cl::init(false))

static

Referenced by llvm::DwarfDebug::endModule().

GenerateDwarfTypeUnits

cl::opt<bool> GenerateDwarfTypeUnits("generate-type-units", cl::Hidden, cl::desc("Generate DWARF4 type units."), cl::init(false))

static

Referenced by llvm::DwarfDebug::DwarfDebug().

NoDwarfRangesSection

cl::opt<bool> NoDwarfRangesSection("no-dwarf-ranges-section", cl::Hidden, cl::desc("Disable emission .debug_ranges section."), cl::init(false))

static

SplitDwarfCrossCuReferences

cl::opt<bool> SplitDwarfCrossCuReferences("split-dwarf-cross-cu-references", cl::Hidden, cl::desc("Enable cross-cu references in DWO files"), cl::init(false))

static

Referenced by llvm::DwarfDebug::shareAcrossDWOCUs().

ULEB128PadSize

constexpr unsigned ULEB128PadSize = 4

static

Definition at line 170 of file DwarfDebug.cpp.

Referenced by llvm::DIEBaseTypeRef::EmitValue(), and llvm::DIEBaseTypeRef::SizeOf().

UnknownLocations

cl::opt<DefaultOnOff> UnknownLocations("use-unknown-locations", cl::Hidden, cl::desc("Make an absence of debug location information explicit."), cl::values(clEnumVal(Default, "At top of block or after label"), clEnumVal(Enable, "In all cases"), clEnumVal(Disable, "Never")), cl::init(Default))

static

UseDwarfRangesBaseAddressSpecifier

cl::opt<bool> UseDwarfRangesBaseAddressSpecifier("use-dwarf-ranges-base-address-specifier", cl::Hidden, cl::desc("Use base address specifiers in debug_ranges"), cl::init(false))

static