DwarfDebug.cpp

      NewCU->addDelta(Die, dwarf::DW_AT_GNU_pubtypes, dwarf::DW_FORM_data4,
                      Asm->GetTempSymbol("gnu_pubtypes", NewCU->getUniqueID()),
                      DwarfGnuPubTypesSectionSym);
  }

  // Flag if we've emitted any ranges and their location for the compile unit.
  if (DebugRangeSymbols.size()) {
    if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
      NewCU->addLabel(Die, dwarf::DW_AT_GNU_ranges_base,
                      dwarf::DW_FORM_sec_offset, DwarfDebugRangeSectionSym);
    else
      NewCU->addUInt(Die, dwarf::DW_AT_GNU_ranges_base, dwarf::DW_FORM_data4,
                     0);
  }

  SkeletonHolder.addUnit(NewCU);
  SkeletonCUs.push_back(NewCU);

  return NewCU;
}

void DwarfDebug::emitSkeletonAbbrevs(const MCSection *Section) {
  assert(useSplitDwarf() && "No split dwarf debug info?");
  emitAbbrevs(Section, &SkeletonAbbrevs);
}

// Emit the .debug_info.dwo section for separated dwarf. This contains the
// compile units that would normally be in debug_info.
void DwarfDebug::emitDebugInfoDWO() {
  assert(useSplitDwarf() && "No split dwarf debug info?");
  InfoHolder.emitUnits(this, Asm->getObjFileLowering().getDwarfInfoDWOSection(),
                       Asm->getObjFileLowering().getDwarfAbbrevDWOSection(),
                       DwarfAbbrevDWOSectionSym);
}

// Emit the .debug_abbrev.dwo section for separated dwarf. This contains the
// abbreviations for the .debug_info.dwo section.
void DwarfDebug::emitDebugAbbrevDWO() {
  assert(useSplitDwarf() && "No split dwarf?");
  emitAbbrevs(Asm->getObjFileLowering().getDwarfAbbrevDWOSection(),
              &Abbreviations);
}

// Emit the .debug_str.dwo section for separated dwarf. This contains the
// string section and is identical in format to traditional .debug_str
// sections.
void DwarfDebug::emitDebugStrDWO() {
  assert(useSplitDwarf() && "No split dwarf?");
  const MCSection *OffSec = Asm->getObjFileLowering()
                            .getDwarfStrOffDWOSection();
  const MCSymbol *StrSym = DwarfStrSectionSym;
  InfoHolder.emitStrings(Asm->getObjFileLowering().getDwarfStrDWOSection(),
                         OffSec, StrSym);
}