Remove LLVM 8.0.1 files.

1 files changed, 0 insertions, 738 deletions

diff --git a/gnu/llvm/tools/llvm-dwp/llvm-dwp.cpp b/gnu/llvm/tools/llvm-dwp/llvm-dwp.cpp
deleted file mode 100644
index 8a0744cf1e0..00000000000
--- a/gnu/llvm/tools/llvm-dwp/llvm-dwp.cpp
+++ /dev/null
@@ -1,738 +0,0 @@
-//===-- llvm-dwp.cpp - Split DWARF merging tool for llvm ------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// A utility for merging DWARF 5 Split DWARF .dwo files into .dwp (DWARF
-// package files).
-//
-//===----------------------------------------------------------------------===//
-#include "DWPError.h"
-#include "DWPStringPool.h"
-#include "llvm/ADT/MapVector.h"
-#include "llvm/ADT/STLExtras.h"
-#include "llvm/DebugInfo/DWARF/DWARFContext.h"
-#include "llvm/DebugInfo/DWARF/DWARFFormValue.h"
-#include "llvm/DebugInfo/DWARF/DWARFUnitIndex.h"
-#include "llvm/MC/MCAsmBackend.h"
-#include "llvm/MC/MCAsmInfo.h"
-#include "llvm/MC/MCCodeEmitter.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCInstrInfo.h"
-#include "llvm/MC/MCObjectFileInfo.h"
-#include "llvm/MC/MCObjectWriter.h"
-#include "llvm/MC/MCRegisterInfo.h"
-#include "llvm/MC/MCStreamer.h"
-#include "llvm/MC/MCTargetOptionsCommandFlags.inc"
-#include "llvm/Object/Decompressor.h"
-#include "llvm/Object/ObjectFile.h"
-#include "llvm/Support/DataExtractor.h"
-#include "llvm/Support/Error.h"
-#include "llvm/Support/FileSystem.h"
-#include "llvm/Support/InitLLVM.h"
-#include "llvm/Support/MathExtras.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/Path.h"
-#include "llvm/Support/TargetRegistry.h"
-#include "llvm/Support/TargetSelect.h"
-#include "llvm/Support/raw_ostream.h"
-
-using namespace llvm;
-using namespace llvm::object;
-
-cl::OptionCategory DwpCategory("Specific Options");
-static cl::list<std::string> InputFiles(cl::Positional, cl::ZeroOrMore,
-                                        cl::desc("<input files>"),
-                                        cl::cat(DwpCategory));
-
-static cl::list<std::string> ExecFilenames(
-    "e", cl::ZeroOrMore,
-    cl::desc("Specify the executable/library files to get the list of *.dwo from"),
-    cl::value_desc("filename"), cl::cat(DwpCategory));
-
-static cl::opt<std::string> OutputFilename(cl::Required, "o",
-                                           cl::desc("Specify the output file."),
-                                           cl::value_desc("filename"),
-                                           cl::cat(DwpCategory));
-
-static void writeStringsAndOffsets(MCStreamer &Out, DWPStringPool &Strings,
-                                   MCSection *StrOffsetSection,
-                                   StringRef CurStrSection,
-                                   StringRef CurStrOffsetSection) {
-  // Could possibly produce an error or warning if one of these was non-null but
-  // the other was null.
-  if (CurStrSection.empty() || CurStrOffsetSection.empty())
-    return;
-
-  DenseMap<uint32_t, uint32_t> OffsetRemapping;
-
-  DataExtractor Data(CurStrSection, true, 0);
-  uint32_t LocalOffset = 0;
-  uint32_t PrevOffset = 0;
-  while (const char *s = Data.getCStr(&LocalOffset)) {
-    OffsetRemapping[PrevOffset] =
-        Strings.getOffset(s, LocalOffset - PrevOffset);
-    PrevOffset = LocalOffset;
-  }
-
-  Data = DataExtractor(CurStrOffsetSection, true, 0);
-
-  Out.SwitchSection(StrOffsetSection);
-
-  uint32_t Offset = 0;
-  uint64_t Size = CurStrOffsetSection.size();
-  while (Offset < Size) {
-    auto OldOffset = Data.getU32(&Offset);
-    auto NewOffset = OffsetRemapping[OldOffset];
-    Out.EmitIntValue(NewOffset, 4);
-  }
-}
-
-static uint32_t getCUAbbrev(StringRef Abbrev, uint64_t AbbrCode) {
-  uint64_t CurCode;
-  uint32_t Offset = 0;
-  DataExtractor AbbrevData(Abbrev, true, 0);
-  while ((CurCode = AbbrevData.getULEB128(&Offset)) != AbbrCode) {
-    // Tag
-    AbbrevData.getULEB128(&Offset);
-    // DW_CHILDREN
-    AbbrevData.getU8(&Offset);
-    // Attributes
-    while (AbbrevData.getULEB128(&Offset) | AbbrevData.getULEB128(&Offset))
-      ;
-  }
-  return Offset;
-}
-
-struct CompileUnitIdentifiers {
-  uint64_t Signature = 0;
-  const char *Name = "";
-  const char *DWOName = "";
-};
-
-static Expected<const char *>
-getIndexedString(dwarf::Form Form, DataExtractor InfoData,
-                 uint32_t &InfoOffset, StringRef StrOffsets, StringRef Str) {
-  if (Form == dwarf::DW_FORM_string)
-    return InfoData.getCStr(&InfoOffset);
-  if (Form != dwarf::DW_FORM_GNU_str_index)
-    return make_error<DWPError>(
-        "string field encoded without DW_FORM_string or DW_FORM_GNU_str_index");
-  auto StrIndex = InfoData.getULEB128(&InfoOffset);
-  DataExtractor StrOffsetsData(StrOffsets, true, 0);
-  uint32_t StrOffsetsOffset = 4 * StrIndex;
-  uint32_t StrOffset = StrOffsetsData.getU32(&StrOffsetsOffset);
-  DataExtractor StrData(Str, true, 0);
-  return StrData.getCStr(&StrOffset);
-}
-
-static Expected<CompileUnitIdentifiers> getCUIdentifiers(StringRef Abbrev,
-                                                         StringRef Info,
-                                                         StringRef StrOffsets,
-                                                         StringRef Str) {
-  uint32_t Offset = 0;
-  DataExtractor InfoData(Info, true, 0);
-  dwarf::DwarfFormat Format = dwarf::DwarfFormat::DWARF32;
-  uint64_t Length = InfoData.getU32(&Offset);
-  // If the length is 0xffffffff, then this indictes that this is a DWARF 64
-  // stream and the length is actually encoded into a 64 bit value that follows.
-  if (Length == 0xffffffffU) {
-    Format = dwarf::DwarfFormat::DWARF64;
-    Length = InfoData.getU64(&Offset);
-  }
-  uint16_t Version = InfoData.getU16(&Offset);
-  InfoData.getU32(&Offset); // Abbrev offset (should be zero)
-  uint8_t AddrSize = InfoData.getU8(&Offset);
-
-  uint32_t AbbrCode = InfoData.getULEB128(&Offset);
-
-  DataExtractor AbbrevData(Abbrev, true, 0);
-  uint32_t AbbrevOffset = getCUAbbrev(Abbrev, AbbrCode);
-  auto Tag = static_cast<dwarf::Tag>(AbbrevData.getULEB128(&AbbrevOffset));
-  if (Tag != dwarf::DW_TAG_compile_unit)
-    return make_error<DWPError>("top level DIE is not a compile unit");
-  // DW_CHILDREN
-  AbbrevData.getU8(&AbbrevOffset);
-  uint32_t Name;
-  dwarf::Form Form;
-  CompileUnitIdentifiers ID;
-  while ((Name = AbbrevData.getULEB128(&AbbrevOffset)) |
-         (Form = static_cast<dwarf::Form>(AbbrevData.getULEB128(&AbbrevOffset))) &&
-         (Name != 0 || Form != 0)) {
-    switch (Name) {
-    case dwarf::DW_AT_name: {
-      Expected<const char *> EName =
-          getIndexedString(Form, InfoData, Offset, StrOffsets, Str);
-      if (!EName)
-        return EName.takeError();
-      ID.Name = *EName;
-      break;
-    }
-    case dwarf::DW_AT_GNU_dwo_name: {
-      Expected<const char *> EName =
-          getIndexedString(Form, InfoData, Offset, StrOffsets, Str);
-      if (!EName)
-        return EName.takeError();
-      ID.DWOName = *EName;
-      break;
-    }
-    case dwarf::DW_AT_GNU_dwo_id:
-      ID.Signature = InfoData.getU64(&Offset);
-      break;
-    default:
-      DWARFFormValue::skipValue(Form, InfoData, &Offset,
-                                dwarf::FormParams({Version, AddrSize, Format}));
-    }
-  }
-  return ID;
-}
-
-struct UnitIndexEntry {
-  DWARFUnitIndex::Entry::SectionContribution Contributions[8];
-  std::string Name;
-  std::string DWOName;
-  StringRef DWPName;
-};
-
-static StringRef getSubsection(StringRef Section,
-                               const DWARFUnitIndex::Entry &Entry,
-                               DWARFSectionKind Kind) {
-  const auto *Off = Entry.getOffset(Kind);
-  if (!Off)
-    return StringRef();
-  return Section.substr(Off->Offset, Off->Length);
-}
-
-static void addAllTypesFromDWP(
-    MCStreamer &Out, MapVector<uint64_t, UnitIndexEntry> &TypeIndexEntries,
-    const DWARFUnitIndex &TUIndex, MCSection *OutputTypes, StringRef Types,
-    const UnitIndexEntry &TUEntry, uint32_t &TypesOffset) {
-  Out.SwitchSection(OutputTypes);
-  for (const DWARFUnitIndex::Entry &E : TUIndex.getRows()) {
-    auto *I = E.getOffsets();
-    if (!I)
-      continue;
-    auto P = TypeIndexEntries.insert(std::make_pair(E.getSignature(), TUEntry));
-    if (!P.second)
-      continue;
-    auto &Entry = P.first->second;
-    // Zero out the debug_info contribution
-    Entry.Contributions[0] = {};
-    for (auto Kind : TUIndex.getColumnKinds()) {
-      auto &C = Entry.Contributions[Kind - DW_SECT_INFO];
-      C.Offset += I->Offset;
-      C.Length = I->Length;
-      ++I;
-    }
-    auto &C = Entry.Contributions[DW_SECT_TYPES - DW_SECT_INFO];
-    Out.EmitBytes(Types.substr(
-        C.Offset - TUEntry.Contributions[DW_SECT_TYPES - DW_SECT_INFO].Offset,
-        C.Length));
-    C.Offset = TypesOffset;
-    TypesOffset += C.Length;
-  }
-}
-
-static void addAllTypes(MCStreamer &Out,
-                        MapVector<uint64_t, UnitIndexEntry> &TypeIndexEntries,
-                        MCSection *OutputTypes,
-                        const std::vector<StringRef> &TypesSections,
-                        const UnitIndexEntry &CUEntry, uint32_t &TypesOffset) {
-  for (StringRef Types : TypesSections) {
-    Out.SwitchSection(OutputTypes);
-    uint32_t Offset = 0;
-    DataExtractor Data(Types, true, 0);
-    while (Data.isValidOffset(Offset)) {
-      UnitIndexEntry Entry = CUEntry;
-      // Zero out the debug_info contribution
-      Entry.Contributions[0] = {};
-      auto &C = Entry.Contributions[DW_SECT_TYPES - DW_SECT_INFO];
-      C.Offset = TypesOffset;
-      auto PrevOffset = Offset;
-      // Length of the unit, including the 4 byte length field.
-      C.Length = Data.getU32(&Offset) + 4;
-
-      Data.getU16(&Offset); // Version
-      Data.getU32(&Offset); // Abbrev offset
-      Data.getU8(&Offset);  // Address size
-      auto Signature = Data.getU64(&Offset);
-      Offset = PrevOffset + C.Length;
-
-      auto P = TypeIndexEntries.insert(std::make_pair(Signature, Entry));
-      if (!P.second)
-        continue;
-
-      Out.EmitBytes(Types.substr(PrevOffset, C.Length));
-      TypesOffset += C.Length;
-    }
-  }
-}
-
-static void
-writeIndexTable(MCStreamer &Out, ArrayRef<unsigned> ContributionOffsets,
-                const MapVector<uint64_t, UnitIndexEntry> &IndexEntries,
-                uint32_t DWARFUnitIndex::Entry::SectionContribution::*Field) {
-  for (const auto &E : IndexEntries)
-    for (size_t i = 0; i != array_lengthof(E.second.Contributions); ++i)
-      if (ContributionOffsets[i])
-        Out.EmitIntValue(E.second.Contributions[i].*Field, 4);
-}
-
-static void
-writeIndex(MCStreamer &Out, MCSection *Section,
-           ArrayRef<unsigned> ContributionOffsets,
-           const MapVector<uint64_t, UnitIndexEntry> &IndexEntries) {
-  if (IndexEntries.empty())
-    return;
-
-  unsigned Columns = 0;
-  for (auto &C : ContributionOffsets)
-    if (C)
-      ++Columns;
-
-  std::vector<unsigned> Buckets(NextPowerOf2(3 * IndexEntries.size() / 2));
-  uint64_t Mask = Buckets.size() - 1;
-  size_t i = 0;
-  for (const auto &P : IndexEntries) {
-    auto S = P.first;
-    auto H = S & Mask;
-    auto HP = ((S >> 32) & Mask) | 1;
-    while (Buckets[H]) {
-      assert(S != IndexEntries.begin()[Buckets[H] - 1].first &&
-             "Duplicate unit");
-      H = (H + HP) & Mask;
-    }
-    Buckets[H] = i + 1;
-    ++i;
-  }
-
-  Out.SwitchSection(Section);
-  Out.EmitIntValue(2, 4);                   // Version
-  Out.EmitIntValue(Columns, 4);             // Columns
-  Out.EmitIntValue(IndexEntries.size(), 4); // Num Units
-  Out.EmitIntValue(Buckets.size(), 4);      // Num Buckets
-
-  // Write the signatures.
-  for (const auto &I : Buckets)
-    Out.EmitIntValue(I ? IndexEntries.begin()[I - 1].first : 0, 8);
-
-  // Write the indexes.
-  for (const auto &I : Buckets)
-    Out.EmitIntValue(I, 4);
-
-  // Write the column headers (which sections will appear in the table)
-  for (size_t i = 0; i != ContributionOffsets.size(); ++i)
-    if (ContributionOffsets[i])
-      Out.EmitIntValue(i + DW_SECT_INFO, 4);
-
-  // Write the offsets.
-  writeIndexTable(Out, ContributionOffsets, IndexEntries,
-                  &DWARFUnitIndex::Entry::SectionContribution::Offset);
-
-  // Write the lengths.
-  writeIndexTable(Out, ContributionOffsets, IndexEntries,
-                  &DWARFUnitIndex::Entry::SectionContribution::Length);
-}
-
-std::string buildDWODescription(StringRef Name, StringRef DWPName, StringRef DWOName) {
-  std::string Text = "\'";
-  Text += Name;
-  Text += '\'';
-  if (!DWPName.empty()) {
-    Text += " (from ";
-    if (!DWOName.empty()) {
-      Text += '\'';
-      Text += DWOName;
-      Text += "' in ";
-    }
-    Text += '\'';
-    Text += DWPName;
-    Text += "')";
-  }
-  return Text;
-}
-
-static Error createError(StringRef Name, Error E) {
-  return make_error<DWPError>(
-      ("failure while decompressing compressed section: '" + Name + "', " +
-       llvm::toString(std::move(E)))
-          .str());
-}
-
-static Error
-handleCompressedSection(std::deque<SmallString<32>> &UncompressedSections,
-                        StringRef &Name, StringRef &Contents) {
-  if (!Decompressor::isGnuStyle(Name))
-    return Error::success();
-
-  Expected<Decompressor> Dec =
-      Decompressor::create(Name, Contents, false /*IsLE*/, false /*Is64Bit*/);
-  if (!Dec)
-    return createError(Name, Dec.takeError());
-
-  UncompressedSections.emplace_back();
-  if (Error E = Dec->resizeAndDecompress(UncompressedSections.back()))
-    return createError(Name, std::move(E));
-
-  Name = Name.substr(2); // Drop ".z"
-  Contents = UncompressedSections.back();
-  return Error::success();
-}
-
-static Error handleSection(
-    const StringMap<std::pair<MCSection *, DWARFSectionKind>> &KnownSections,
-    const MCSection *StrSection, const MCSection *StrOffsetSection,
-    const MCSection *TypesSection, const MCSection *CUIndexSection,
-    const MCSection *TUIndexSection, const SectionRef &Section, MCStreamer &Out,
-    std::deque<SmallString<32>> &UncompressedSections,
-    uint32_t (&ContributionOffsets)[8], UnitIndexEntry &CurEntry,
-    StringRef &CurStrSection, StringRef &CurStrOffsetSection,
-    std::vector<StringRef> &CurTypesSection, StringRef &InfoSection,
-    StringRef &AbbrevSection, StringRef &CurCUIndexSection,
-    StringRef &CurTUIndexSection) {
-  if (Section.isBSS())
-    return Error::success();
-
-  if (Section.isVirtual())
-    return Error::success();
-
-  StringRef Name;
-  if (std::error_code Err = Section.getName(Name))
-    return errorCodeToError(Err);
-
-  StringRef Contents;
-  if (auto Err = Section.getContents(Contents))
-    return errorCodeToError(Err);
-
-  if (auto Err = handleCompressedSection(UncompressedSections, Name, Contents))
-    return Err;
-
-  Name = Name.substr(Name.find_first_not_of("._"));
-
-  auto SectionPair = KnownSections.find(Name);
-  if (SectionPair == KnownSections.end())
-    return Error::success();
-
-  if (DWARFSectionKind Kind = SectionPair->second.second) {
-    auto Index = Kind - DW_SECT_INFO;
-    if (Kind != DW_SECT_TYPES) {
-      CurEntry.Contributions[Index].Offset = ContributionOffsets[Index];
-      ContributionOffsets[Index] +=
-          (CurEntry.Contributions[Index].Length = Contents.size());
-    }
-
-    switch (Kind) {
-    case DW_SECT_INFO:
-      InfoSection = Contents;
-      break;
-    case DW_SECT_ABBREV:
-      AbbrevSection = Contents;
-      break;
-    default:
-      break;
-    }
-  }
-
-  MCSection *OutSection = SectionPair->second.first;
-  if (OutSection == StrOffsetSection)
-    CurStrOffsetSection = Contents;
-  else if (OutSection == StrSection)
-    CurStrSection = Contents;
-  else if (OutSection == TypesSection)
-    CurTypesSection.push_back(Contents);
-  else if (OutSection == CUIndexSection)
-    CurCUIndexSection = Contents;
-  else if (OutSection == TUIndexSection)
-    CurTUIndexSection = Contents;
-  else {
-    Out.SwitchSection(OutSection);
-    Out.EmitBytes(Contents);
-  }
-  return Error::success();
-}
-
-static Error
-buildDuplicateError(const std::pair<uint64_t, UnitIndexEntry> &PrevE,
-                    const CompileUnitIdentifiers &ID, StringRef DWPName) {
-  return make_error<DWPError>(
-      std::string("Duplicate DWO ID (") + utohexstr(PrevE.first) + ") in " +
-      buildDWODescription(PrevE.second.Name, PrevE.second.DWPName,
-                          PrevE.second.DWOName) +
-      " and " + buildDWODescription(ID.Name, DWPName, ID.DWOName));
-}
-
-static Expected<SmallVector<std::string, 16>>
-getDWOFilenames(StringRef ExecFilename) {
-  auto ErrOrObj = object::ObjectFile::createObjectFile(ExecFilename);
-  if (!ErrOrObj)
-    return ErrOrObj.takeError();
-
-  const ObjectFile &Obj = *ErrOrObj.get().getBinary();
-  std::unique_ptr<DWARFContext> DWARFCtx = DWARFContext::create(Obj);
-
-  SmallVector<std::string, 16> DWOPaths;
-  for (const auto &CU : DWARFCtx->compile_units()) {
-    const DWARFDie &Die = CU->getUnitDIE();
-    std::string DWOName = dwarf::toString(
-        Die.find({dwarf::DW_AT_dwo_name, dwarf::DW_AT_GNU_dwo_name}), "");
-    if (DWOName.empty())
-      continue;
-    std::string DWOCompDir =
-        dwarf::toString(Die.find(dwarf::DW_AT_comp_dir), "");
-    if (!DWOCompDir.empty()) {
-      SmallString<16> DWOPath;
-      sys::path::append(DWOPath, DWOCompDir, DWOName);
-      DWOPaths.emplace_back(DWOPath.data(), DWOPath.size());
-    } else {
-      DWOPaths.push_back(std::move(DWOName));
-    }
-  }
-  return std::move(DWOPaths);
-}
-
-static Error write(MCStreamer &Out, ArrayRef<std::string> Inputs) {
-  const auto &MCOFI = *Out.getContext().getObjectFileInfo();
-  MCSection *const StrSection = MCOFI.getDwarfStrDWOSection();
-  MCSection *const StrOffsetSection = MCOFI.getDwarfStrOffDWOSection();
-  MCSection *const TypesSection = MCOFI.getDwarfTypesDWOSection();
-  MCSection *const CUIndexSection = MCOFI.getDwarfCUIndexSection();
-  MCSection *const TUIndexSection = MCOFI.getDwarfTUIndexSection();
-  const StringMap<std::pair<MCSection *, DWARFSectionKind>> KnownSections = {
-      {"debug_info.dwo", {MCOFI.getDwarfInfoDWOSection(), DW_SECT_INFO}},
-      {"debug_types.dwo", {MCOFI.getDwarfTypesDWOSection(), DW_SECT_TYPES}},
-      {"debug_str_offsets.dwo", {StrOffsetSection, DW_SECT_STR_OFFSETS}},
-      {"debug_str.dwo", {StrSection, static_cast<DWARFSectionKind>(0)}},
-      {"debug_loc.dwo", {MCOFI.getDwarfLocDWOSection(), DW_SECT_LOC}},
-      {"debug_line.dwo", {MCOFI.getDwarfLineDWOSection(), DW_SECT_LINE}},
-      {"debug_abbrev.dwo", {MCOFI.getDwarfAbbrevDWOSection(), DW_SECT_ABBREV}},
-      {"debug_cu_index", {CUIndexSection, static_cast<DWARFSectionKind>(0)}},
-      {"debug_tu_index", {TUIndexSection, static_cast<DWARFSectionKind>(0)}}};
-
-  MapVector<uint64_t, UnitIndexEntry> IndexEntries;
-  MapVector<uint64_t, UnitIndexEntry> TypeIndexEntries;
-
-  uint32_t ContributionOffsets[8] = {};
-
-  DWPStringPool Strings(Out, StrSection);
-
-  SmallVector<OwningBinary<object::ObjectFile>, 128> Objects;
-  Objects.reserve(Inputs.size());
-
-  std::deque<SmallString<32>> UncompressedSections;
-
-  for (const auto &Input : Inputs) {
-    auto ErrOrObj = object::ObjectFile::createObjectFile(Input);
-    if (!ErrOrObj)
-      return ErrOrObj.takeError();
-
-    auto &Obj = *ErrOrObj->getBinary();
-    Objects.push_back(std::move(*ErrOrObj));
-
-    UnitIndexEntry CurEntry = {};
-
-    StringRef CurStrSection;
-    StringRef CurStrOffsetSection;
-    std::vector<StringRef> CurTypesSection;
-    StringRef InfoSection;
-    StringRef AbbrevSection;
-    StringRef CurCUIndexSection;
-    StringRef CurTUIndexSection;
-
-    for (const auto &Section : Obj.sections())
-      if (auto Err = handleSection(
-              KnownSections, StrSection, StrOffsetSection, TypesSection,
-              CUIndexSection, TUIndexSection, Section, Out,
-              UncompressedSections, ContributionOffsets, CurEntry,
-              CurStrSection, CurStrOffsetSection, CurTypesSection, InfoSection,
-              AbbrevSection, CurCUIndexSection, CurTUIndexSection))
-        return Err;
-
-    if (InfoSection.empty())
-      continue;
-
-    writeStringsAndOffsets(Out, Strings, StrOffsetSection, CurStrSection,
-                           CurStrOffsetSection);
-
-    if (CurCUIndexSection.empty()) {
-      Expected<CompileUnitIdentifiers> EID = getCUIdentifiers(
-          AbbrevSection, InfoSection, CurStrOffsetSection, CurStrSection);
-      if (!EID)
-        return EID.takeError();
-      const auto &ID = *EID;
-      auto P = IndexEntries.insert(std::make_pair(ID.Signature, CurEntry));
-      if (!P.second)
-        return buildDuplicateError(*P.first, ID, "");
-      P.first->second.Name = ID.Name;
-      P.first->second.DWOName = ID.DWOName;
-      addAllTypes(Out, TypeIndexEntries, TypesSection, CurTypesSection,
-                  CurEntry, ContributionOffsets[DW_SECT_TYPES - DW_SECT_INFO]);
-      continue;
-    }
-
-    DWARFUnitIndex CUIndex(DW_SECT_INFO);
-    DataExtractor CUIndexData(CurCUIndexSection, Obj.isLittleEndian(), 0);
-    if (!CUIndex.parse(CUIndexData))
-      return make_error<DWPError>("Failed to parse cu_index");
-
-    for (const DWARFUnitIndex::Entry &E : CUIndex.getRows()) {
-      auto *I = E.getOffsets();
-      if (!I)
-        continue;
-      auto P = IndexEntries.insert(std::make_pair(E.getSignature(), CurEntry));
-      Expected<CompileUnitIdentifiers> EID = getCUIdentifiers(
-          getSubsection(AbbrevSection, E, DW_SECT_ABBREV),
-          getSubsection(InfoSection, E, DW_SECT_INFO),
-          getSubsection(CurStrOffsetSection, E, DW_SECT_STR_OFFSETS),
-          CurStrSection);
-      if (!EID)
-        return EID.takeError();
-      const auto &ID = *EID;
-      if (!P.second)
-        return buildDuplicateError(*P.first, ID, Input);
-      auto &NewEntry = P.first->second;
-      NewEntry.Name = ID.Name;
-      NewEntry.DWOName = ID.DWOName;
-      NewEntry.DWPName = Input;
-      for (auto Kind : CUIndex.getColumnKinds()) {
-        auto &C = NewEntry.Contributions[Kind - DW_SECT_INFO];
-        C.Offset += I->Offset;
-        C.Length = I->Length;
-        ++I;
-      }
-    }
-
-    if (!CurTypesSection.empty()) {
-      if (CurTypesSection.size() != 1)
-        return make_error<DWPError>("multiple type unit sections in .dwp file");
-      DWARFUnitIndex TUIndex(DW_SECT_TYPES);
-      DataExtractor TUIndexData(CurTUIndexSection, Obj.isLittleEndian(), 0);
-      if (!TUIndex.parse(TUIndexData))
-        return make_error<DWPError>("Failed to parse tu_index");
-      addAllTypesFromDWP(Out, TypeIndexEntries, TUIndex, TypesSection,
-                         CurTypesSection.front(), CurEntry,
-                         ContributionOffsets[DW_SECT_TYPES - DW_SECT_INFO]);
-    }
-  }
-
-  // Lie about there being no info contributions so the TU index only includes
-  // the type unit contribution
-  ContributionOffsets[0] = 0;
-  writeIndex(Out, MCOFI.getDwarfTUIndexSection(), ContributionOffsets,
-             TypeIndexEntries);
-
-  // Lie about the type contribution
-  ContributionOffsets[DW_SECT_TYPES - DW_SECT_INFO] = 0;
-  // Unlie about the info contribution
-  ContributionOffsets[0] = 1;
-
-  writeIndex(Out, MCOFI.getDwarfCUIndexSection(), ContributionOffsets,
-             IndexEntries);
-
-  return Error::success();
-}
-
-static int error(const Twine &Error, const Twine &Context) {
-  errs() << Twine("while processing ") + Context + ":\n";
-  errs() << Twine("error: ") + Error + "\n";
-  return 1;
-}
-
-int main(int argc, char **argv) {
-  InitLLVM X(argc, argv);
-
-  cl::ParseCommandLineOptions(argc, argv, "merge split dwarf (.dwo) files\n");
-
-  llvm::InitializeAllTargetInfos();
-  llvm::InitializeAllTargetMCs();
-  llvm::InitializeAllTargets();
-  llvm::InitializeAllAsmPrinters();
-
-  std::string ErrorStr;
-  StringRef Context = "dwarf streamer init";
-
-  Triple TheTriple("x86_64-linux-gnu");
-
-  // Get the target.
-  const Target *TheTarget =
-      TargetRegistry::lookupTarget("", TheTriple, ErrorStr);
-  if (!TheTarget)
-    return error(ErrorStr, Context);
-  std::string TripleName = TheTriple.getTriple();
-
-  // Create all the MC Objects.
-  std::unique_ptr<MCRegisterInfo> MRI(TheTarget->createMCRegInfo(TripleName));
-  if (!MRI)
-    return error(Twine("no register info for target ") + TripleName, Context);
-
-  std::unique_ptr<MCAsmInfo> MAI(TheTarget->createMCAsmInfo(*MRI, TripleName));
-  if (!MAI)
-    return error("no asm info for target " + TripleName, Context);
-
-  MCObjectFileInfo MOFI;
-  MCContext MC(MAI.get(), MRI.get(), &MOFI);
-  MOFI.InitMCObjectFileInfo(TheTriple, /*PIC*/ false, MC);
-
-  std::unique_ptr<MCSubtargetInfo> MSTI(
-      TheTarget->createMCSubtargetInfo(TripleName, "", ""));
-  if (!MSTI)
-    return error("no subtarget info for target " + TripleName, Context);
-
-  MCTargetOptions Options;
-  auto MAB = TheTarget->createMCAsmBackend(*MSTI, *MRI, Options);
-  if (!MAB)
-    return error("no asm backend for target " + TripleName, Context);
-
-  std::unique_ptr<MCInstrInfo> MII(TheTarget->createMCInstrInfo());
-  if (!MII)
-    return error("no instr info info for target " + TripleName, Context);
-
-  MCCodeEmitter *MCE = TheTarget->createMCCodeEmitter(*MII, *MRI, MC);
-  if (!MCE)
-    return error("no code emitter for target " + TripleName, Context);
-
-  // Create the output file.
-  std::error_code EC;
-  raw_fd_ostream OutFile(OutputFilename, EC, sys::fs::F_None);
-  Optional<buffer_ostream> BOS;
-  raw_pwrite_stream *OS;
-  if (EC)
-    return error(Twine(OutputFilename) + ": " + EC.message(), Context);
-  if (OutFile.supportsSeeking()) {
-    OS = &OutFile;
-  } else {
-    BOS.emplace(OutFile);
-    OS = BOS.getPointer();
-  }
-
-  MCTargetOptions MCOptions = InitMCTargetOptionsFromFlags();
-  std::unique_ptr<MCStreamer> MS(TheTarget->createMCObjectStreamer(
-      TheTriple, MC, std::unique_ptr<MCAsmBackend>(MAB),
-      MAB->createObjectWriter(*OS), std::unique_ptr<MCCodeEmitter>(MCE),
-      *MSTI, MCOptions.MCRelaxAll, MCOptions.MCIncrementalLinkerCompatible,
-      /*DWARFMustBeAtTheEnd*/ false));
-  if (!MS)
-    return error("no object streamer for target " + TripleName, Context);
-
-  std::vector<std::string> DWOFilenames = InputFiles;
-  for (const auto &ExecFilename : ExecFilenames) {
-    auto DWOs = getDWOFilenames(ExecFilename);
-    if (!DWOs) {
-      logAllUnhandledErrors(DWOs.takeError(), errs(), "error: ");
-      return 1;
-    }
-    DWOFilenames.insert(DWOFilenames.end(),
-                        std::make_move_iterator(DWOs->begin()),
-                        std::make_move_iterator(DWOs->end()));
-  }
-
-  if (auto Err = write(*MS, DWOFilenames)) {
-    logAllUnhandledErrors(std::move(Err), errs(), "error: ");
-    return 1;
-  }
-
-  MS->Finish();
-}