LLVM API Documentation

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DwarfDebug.cpp File Reference
#include "ByteStreamer.h"
#include "DwarfDebug.h"
#include "DIE.h"
#include "DIEHash.h"
#include "DwarfUnit.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/Triple.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DIBuilder.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DebugInfo.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/ValueHandle.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/Endian.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FormattedStream.h"
#include "llvm/Support/LEB128.h"
#include "llvm/Support/MD5.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Timer.h"
#include "llvm/Target/TargetFrameLowering.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Target/TargetSubtargetInfo.h"
Include dependency graph for DwarfDebug.cpp:

Go to the source code of this file.

Classes

struct  ArangeSpan

Defines

#define DEBUG_TYPE   "dwarfdebug"

Enumerations

enum  DefaultOnOff

Functions

static MCSymbol * emitSectionSym (AsmPrinter *Asm, const MCSection *Section, const char *SymbolStem=nullptr)
static bool isObjCClass (StringRef Name)
static bool hasObjCCategory (StringRef Name)
static void getObjCClassCategory (StringRef In, StringRef &Class, StringRef &Category)
static StringRef getObjCMethodName (StringRef In)
static bool SectionSort (const MCSection *A, const MCSection *B)
static void addSectionLabel (AsmPrinter &Asm, DwarfUnit &U, DIE &D, dwarf::Attribute A, const MCSymbol *L, const MCSymbol *Sec)
static std::unique_ptr< DIE > constructVariableDIE (DwarfCompileUnit &TheCU, DbgVariable &DV, const LexicalScope &Scope, DIE *&ObjectPointer)
static DebugLocEntry::Value getDebugLocValue (const MachineInstr *MI)
static bool piecesOverlap (DIVariable P1, DIVariable P2)
 Determine whether two variable pieces overlap.
static DebugLoc findPrologueEndLoc (const MachineFunction *MF)
static
dwarf::PubIndexEntryDescriptor 		computeIndexValue (DwarfUnit *CU, const DIE *Die)
 computeIndexValue - Compute the gdb index value for the DIE and CU.
static uint64_t makeTypeSignature (StringRef Identifier)

Variables

static cl::opt< bool > DisableDebugInfoPrinting ("disable-debug-info-print", cl::Hidden, cl::desc("Disable debug info printing"))
static cl::opt< bool > UnknownLocations ("use-unknown-locations", cl::Hidden, cl::desc("Make an absence of debug location information explicit."), cl::init(false))
static cl::opt< bool > GenerateGnuPubSections ("generate-gnu-dwarf-pub-sections", cl::Hidden, cl::desc("Generate GNU-style pubnames and pubtypes"), cl::init(false))
static cl::opt< bool > GenerateARangeSection ("generate-arange-section", cl::Hidden, cl::desc("Generate dwarf aranges"), cl::init(false))
static cl::opt< DefaultOnOff > DwarfAccelTables ("dwarf-accel-tables", cl::Hidden, cl::desc("Output prototype dwarf accelerator tables."), cl::values(clEnumVal(Default,"Default for platform"), clEnumVal(Enable,"Enabled"), clEnumVal(Disable,"Disabled"), clEnumValEnd), cl::init(Default))
static cl::opt< DefaultOnOff > SplitDwarf ("split-dwarf", cl::Hidden, cl::desc("Output DWARF5 split debug info."), cl::values(clEnumVal(Default,"Default for platform"), clEnumVal(Enable,"Enabled"), clEnumVal(Disable,"Disabled"), clEnumValEnd), cl::init(Default))
static cl::opt< DefaultOnOff > DwarfPubSections ("generate-dwarf-pub-sections", cl::Hidden, cl::desc("Generate DWARF pubnames and pubtypes sections"), cl::values(clEnumVal(Default,"Default for platform"), clEnumVal(Enable,"Enabled"), clEnumVal(Disable,"Disabled"), clEnumValEnd), cl::init(Default))
static const char *const DWARFGroupName = "DWARF Emission"
static const char *const DbgTimerName = "DWARF Debug Writer"
static LLVM_CONSTEXPR
DwarfAccelTable::Atom 		TypeAtoms []

Define Documentation

#define DEBUG_TYPE   "dwarfdebug"

Definition at line 54 of file DwarfDebug.cpp.

Enumeration Type Documentation

enum DefaultOnOff

Definition at line 76 of file DwarfDebug.cpp.

Function Documentation

static void addSectionLabel ( AsmPrinter &  Asm,
DwarfUnit &  U,
DIE &  D,
dwarf::Attribute  A,
const MCSymbol *  L,
const MCSymbol *  Sec 
) [static]

Definition at line 352 of file DwarfDebug.cpp.

References llvm::DwarfUnit::addSectionDelta(), llvm::DwarfUnit::addSectionLabel(), llvm::MCAsmInfo::doesDwarfUseRelocationsAcrossSections(), and llvm::AsmPrinter::MAI.

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

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

Definition at line 1935 of file DwarfDebug.cpp.

References llvm::dwarf::DW_AT_external, llvm::dwarf::DW_AT_specification, llvm::dwarf::DW_LANG_C_plus_plus, llvm::dwarf::DW_TAG_base_type, llvm::dwarf::DW_TAG_class_type, llvm::dwarf::DW_TAG_constant, llvm::dwarf::DW_TAG_enumeration_type, llvm::dwarf::DW_TAG_enumerator, llvm::dwarf::DW_TAG_namespace, llvm::dwarf::DW_TAG_structure_type, llvm::dwarf::DW_TAG_subprogram, llvm::dwarf::DW_TAG_subrange_type, llvm::dwarf::DW_TAG_typedef, llvm::dwarf::DW_TAG_union_type, llvm::dwarf::DW_TAG_variable, llvm::DIE::findAttribute(), getEntry(), llvm::DwarfUnit::getLanguage(), llvm::DIE::getTag(), llvm::dwarf::GIEK_FUNCTION, llvm::dwarf::GIEK_NONE, llvm::dwarf::GIEK_TYPE, llvm::dwarf::GIEK_VARIABLE, llvm::dwarf::GIEL_EXTERNAL, and llvm::dwarf::GIEL_STATIC.

static std::unique_ptr<DIE> constructVariableDIE ( DwarfCompileUnit &  TheCU,
DbgVariable &  DV,
const LexicalScope &  Scope,
DIE *&  ObjectPointer 
) [static]

Definition at line 446 of file DwarfDebug.cpp.

References llvm::DwarfUnit::constructVariableDIE(), llvm::LexicalScope::isAbstractScope(), and llvm::DbgVariable::isObjectPointer().

static MCSymbol* emitSectionSym ( AsmPrinter *  Asm,
const MCSection *  Section,
const char *  SymbolStem = nullptr 
) [static]

Definition at line 227 of file DwarfDebug.cpp.

References llvm::MCStreamer::EmitLabel(), llvm::AsmPrinter::GetTempSymbol(), llvm::AsmPrinter::OutStreamer, and llvm::MCStreamer::SwitchSection().

static DebugLoc findPrologueEndLoc ( const MachineFunction *  MF) [static]

Definition at line 1505 of file DwarfDebug.cpp.

References llvm::MachineInstr::FrameSetup, llvm::MachineInstr::getDebugLoc(), llvm::MachineInstr::getFlag(), llvm::MachineInstr::isDebugValue(), and llvm::DebugLoc::isUnknown().

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

static DebugLocEntry::Value getDebugLocValue ( const MachineInstr *  MI) [static]

Definition at line 1189 of file DwarfDebug.cpp.

References llvm::MachineOperand::getCImm(), llvm::MachineInstr::getDebugVariable(), llvm::MachineOperand::getFPImm(), llvm::MachineOperand::getImm(), llvm::MachineInstr::getNumOperands(), llvm::MachineInstr::getOperand(), llvm::MachineOperand::getReg(), llvm::MachineOperand::isCImm(), llvm::MachineOperand::isFPImm(), llvm::MachineOperand::isImm(), llvm::MachineOperand::isReg(), llvm_unreachable, and llvm::MachineLocation::set().

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

Definition at line 249 of file DwarfDebug.cpp.

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

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

static StringRef getObjCMethodName ( StringRef  In) [static]

Definition at line 262 of file DwarfDebug.cpp.

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

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

static bool hasObjCCategory ( StringRef  Name) [static]

Definition at line 242 of file DwarfDebug.cpp.

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

Referenced by getObjCClassCategory().

static bool isObjCClass ( StringRef  Name) [static]

Definition at line 238 of file DwarfDebug.cpp.

References llvm::StringRef::startswith().

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

static uint64_t makeTypeSignature ( StringRef  Identifier) [static]

Definition at line 2526 of file DwarfDebug.cpp.

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

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

static bool piecesOverlap ( DIVariable  P1,
DIVariable  P2 
) [static]

Determine whether two variable pieces overlap.

Definition at line 1214 of file DwarfDebug.cpp.

References llvm::DIVariable::getPieceOffset(), llvm::DIVariable::getPieceSize(), and llvm::DIVariable::isVariablePiece().

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

static bool SectionSort ( const MCSection *  A,
const MCSection *  B 
) [static]

Definition at line 267 of file DwarfDebug.cpp.

References llvm::MCSection::getLabelBeginName().

Variable Documentation

const char* const DbgTimerName = "DWARF Debug Writer" [static]

Definition at line 104 of file DwarfDebug.cpp.

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

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

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

cl::opt<DefaultOnOff> DwarfAccelTables("dwarf-accel-tables", cl::Hidden, cl::desc("Output prototype dwarf accelerator tables."), cl::values(clEnumVal(Default,"Default for platform"),clEnumVal(Enable,"Enabled"),clEnumVal(Disable,"Disabled"), clEnumValEnd), cl::init(Default)) [static]

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

const char* const DWARFGroupName = "DWARF Emission" [static]

Definition at line 103 of file DwarfDebug.cpp.

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

cl::opt<DefaultOnOff> DwarfPubSections("generate-dwarf-pub-sections", cl::Hidden, cl::desc("Generate DWARF pubnames and pubtypes sections"), cl::values(clEnumVal(Default,"Default for platform"),clEnumVal(Enable,"Enabled"),clEnumVal(Disable,"Disabled"), clEnumValEnd), cl::init(Default)) [static]

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

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

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

cl::opt<bool> GenerateGnuPubSections("generate-gnu-dwarf-pub-sections", cl::Hidden, cl::desc("Generate GNU-style pubnames and pubtypes"), cl::init(false)) [static]

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

cl::opt<DefaultOnOff> SplitDwarf("split-dwarf", cl::Hidden, cl::desc("Output DWARF5 split debug info."), cl::values(clEnumVal(Default,"Default for platform"),clEnumVal(Enable,"Enabled"),clEnumVal(Disable,"Disabled"), clEnumValEnd), cl::init(Default)) [static]

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

LLVM_CONSTEXPR DwarfAccelTable::Atom TypeAtoms[] [static]
Initial value:
 {
    DwarfAccelTable::Atom(dwarf::DW_ATOM_die_offset, dwarf::DW_FORM_data4),
    DwarfAccelTable::Atom(dwarf::DW_ATOM_die_tag, dwarf::DW_FORM_data2),
    DwarfAccelTable::Atom(dwarf::DW_ATOM_type_flags, dwarf::DW_FORM_data1)}

Definition at line 164 of file DwarfDebug.cpp.

cl::opt<bool> UnknownLocations("use-unknown-locations", cl::Hidden, cl::desc("Make an absence of debug location information explicit."), cl::init(false)) [static]

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

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