diff --git a/llvm/include/llvm/CodeGen/AccelTable.h b/llvm/include/llvm/CodeGen/AccelTable.h
--- a/llvm/include/llvm/CodeGen/AccelTable.h
+++ b/llvm/include/llvm/CodeGen/AccelTable.h
@@ -25,6 +25,7 @@
 #include "llvm/Support/DJB.h"
 #include "llvm/Support/Debug.h"
 #include <cstdint>
+#include <variant>
 #include <vector>
 
 /// \file
@@ -310,9 +311,13 @@
                           const DwarfDebug &DD,
                           ArrayRef<std::unique_ptr<DwarfCompileUnit>> CUs);
 
+/// Emit a DWARFv5 Accelerator Table consisting of entries in the specified
+/// AccelTable. The \p CUs contains either symbols keeping offsets to the
+/// start of compilation unit, either offsets to the start of compilation
+/// unit themselves.
 void emitDWARF5AccelTable(
     AsmPrinter *Asm, AccelTable<DWARF5AccelTableStaticData> &Contents,
-    ArrayRef<MCSymbol *> CUs,
+    ArrayRef<std::variant<MCSymbol *, uint64_t>> CUs,
     llvm::function_ref<unsigned(const DWARF5AccelTableStaticData &)>
         getCUIndexForEntry);
 
diff --git a/llvm/include/llvm/DWARFLinkerParallel/DWARFLinker.h b/llvm/include/llvm/DWARFLinkerParallel/DWARFLinker.h
--- a/llvm/include/llvm/DWARFLinkerParallel/DWARFLinker.h
+++ b/llvm/include/llvm/DWARFLinkerParallel/DWARFLinker.h
@@ -100,9 +100,6 @@
   /// Emit section named SecName with data SecData.
   virtual void emitSectionContents(StringRef SecData, StringRef SecName) = 0;
 
-  /// Emit temporarily symbol named \p SymName inside section \p SecName.
-  virtual MCSymbol *emitTempSym(StringRef SecName, StringRef SymName) = 0;
-
   /// Emit the swift_ast section stored in \p Buffer.
   virtual void emitSwiftAST(StringRef Buffer) = 0;
 
diff --git a/llvm/lib/CodeGen/AsmPrinter/AccelTable.cpp b/llvm/lib/CodeGen/AsmPrinter/AccelTable.cpp
--- a/llvm/lib/CodeGen/AsmPrinter/AccelTable.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/AccelTable.cpp
@@ -213,7 +213,7 @@
 
   Header Header;
   DenseMap<uint32_t, SmallVector<AttributeEncoding, 2>> Abbreviations;
-  ArrayRef<MCSymbol *> CompUnits;
+  ArrayRef<std::variant<MCSymbol *, uint64_t>> CompUnits;
   llvm::function_ref<unsigned(const DataT &)> getCUIndexForEntry;
   MCSymbol *ContributionEnd = nullptr;
   MCSymbol *AbbrevStart = Asm->createTempSymbol("names_abbrev_start");
@@ -235,7 +235,7 @@
 public:
   Dwarf5AccelTableWriter(
       AsmPrinter *Asm, const AccelTableBase &Contents,
-      ArrayRef<MCSymbol *> CompUnits,
+      ArrayRef<std::variant<MCSymbol *, uint64_t>> CompUnits,
       llvm::function_ref<unsigned(const DataT &)> GetCUIndexForEntry);
 
   void emit();
@@ -419,7 +419,10 @@
 void Dwarf5AccelTableWriter<DataT>::emitCUList() const {
   for (const auto &CU : enumerate(CompUnits)) {
     Asm->OutStreamer->AddComment("Compilation unit " + Twine(CU.index()));
-    Asm->emitDwarfSymbolReference(CU.value());
+    if (std::holds_alternative<MCSymbol *>(CU.value()))
+      Asm->emitDwarfSymbolReference(std::get<MCSymbol *>(CU.value()));
+    else
+      Asm->emitDwarfLengthOrOffset(std::get<uint64_t>(CU.value()));
   }
 }
 
@@ -508,7 +511,7 @@
 template <typename DataT>
 Dwarf5AccelTableWriter<DataT>::Dwarf5AccelTableWriter(
     AsmPrinter *Asm, const AccelTableBase &Contents,
-    ArrayRef<MCSymbol *> CompUnits,
+    ArrayRef<std::variant<MCSymbol *, uint64_t>> CompUnits,
     llvm::function_ref<unsigned(const DataT &)> getCUIndexForEntry)
     : AccelTableWriter(Asm, Contents, false),
       Header(CompUnits.size(), Contents.getBucketCount(),
@@ -545,7 +548,7 @@
 void llvm::emitDWARF5AccelTable(
     AsmPrinter *Asm, AccelTable<DWARF5AccelTableData> &Contents,
     const DwarfDebug &DD, ArrayRef<std::unique_ptr<DwarfCompileUnit>> CUs) {
-  std::vector<MCSymbol *> CompUnits;
+  std::vector<std::variant<MCSymbol *, uint64_t>> CompUnits;
   SmallVector<unsigned, 1> CUIndex(CUs.size());
   int Count = 0;
   for (const auto &CU : enumerate(CUs)) {
@@ -581,7 +584,7 @@
 
 void llvm::emitDWARF5AccelTable(
     AsmPrinter *Asm, AccelTable<DWARF5AccelTableStaticData> &Contents,
-    ArrayRef<MCSymbol *> CUs,
+    ArrayRef<std::variant<MCSymbol *, uint64_t>> CUs,
     llvm::function_ref<unsigned(const DWARF5AccelTableStaticData &)>
         getCUIndexForEntry) {
   Contents.finalize(Asm, "names");
diff --git a/llvm/lib/DWARFLinker/DWARFStreamer.cpp b/llvm/lib/DWARFLinker/DWARFStreamer.cpp
--- a/llvm/lib/DWARFLinker/DWARFStreamer.cpp
+++ b/llvm/lib/DWARFLinker/DWARFStreamer.cpp
@@ -309,7 +309,7 @@
     return;
 
   // Build up data structures needed to emit this section.
-  std::vector<MCSymbol *> CompUnits;
+  std::vector<std::variant<MCSymbol *, uint64_t>> CompUnits;
   DenseMap<unsigned, size_t> UniqueIdToCuMap;
   unsigned Id = 0;
   for (auto &CU : EmittedUnits) {
diff --git a/llvm/lib/DWARFLinkerParallel/ArrayList.h b/llvm/lib/DWARFLinkerParallel/ArrayList.h
--- a/llvm/lib/DWARFLinkerParallel/ArrayList.h
+++ b/llvm/lib/DWARFLinkerParallel/ArrayList.h
@@ -9,8 +9,8 @@
 #ifndef LLVM_LIB_DWARFLINKERPARALLEL_ARRAYLIST_H
 #define LLVM_LIB_DWARFLINKERPARALLEL_ARRAYLIST_H
 
-#include "DWARFLinkerGlobalData.h"
 #include "llvm/Support/PerThreadBumpPtrAllocator.h"
+#include <atomic>
 
 namespace llvm {
 namespace dwarflinker_parallel {
@@ -18,51 +18,54 @@
 /// This class is a simple list of T structures. It keeps elements as
 /// pre-allocated groups to save memory for each element's next pointer.
 /// It allocates internal data using specified per-thread BumpPtrAllocator.
+/// Method add() can be called asynchronously.
 template <typename T, size_t ItemsGroupSize = 512> class ArrayList {
 public:
-  /// Copy specified \p Item into the list.
-  T &noteItem(const T &Item) {
-    assert(Allocator != nullptr);
-
-    ItemsGroup *CurGroup = LastGroup;
-
-    if (CurGroup == nullptr) {
-      // Allocate first ItemsGroup.
-      LastGroup = Allocator->Allocate<ItemsGroup>();
-      LastGroup->ItemsCount = 0;
-      LastGroup->Next = nullptr;
-      GroupsHead = LastGroup;
-      CurGroup = LastGroup;
+  /// Add specified \p Item to the list.
+  T &add(const T &Item) {
+    assert(Allocator);
+
+    // Allocate head group if it is not allocated yet.
+    while (!LastGroup) {
+      if (allocateNewGroup(GroupsHead))
+        LastGroup = GroupsHead.load();
     }
 
-    if (CurGroup->ItemsCount == ItemsGroupSize) {
-      // Allocate next ItemsGroup if current one is full.
-      LastGroup = Allocator->Allocate<ItemsGroup>();
-      LastGroup->ItemsCount = 0;
-      LastGroup->Next = nullptr;
-      CurGroup->Next = LastGroup;
+    ItemsGroup *CurGroup;
+    size_t CurItemsCount;
+    do {
       CurGroup = LastGroup;
-    }
+      CurItemsCount = CurGroup->ItemsCount.fetch_add(1);
+
+      // Check whether current group is full.
+      if (CurItemsCount < ItemsGroupSize)
+        break;
+
+      // Allocate next group if necessary.
+      if (!CurGroup->Next)
+        allocateNewGroup(CurGroup->Next);
+
+      LastGroup.compare_exchange_weak(CurGroup, CurGroup->Next);
+    } while (true);
 
-    // Copy item into the next position inside current ItemsGroup.
-    CurGroup->Items[CurGroup->ItemsCount] = Item;
-    return CurGroup->Items[CurGroup->ItemsCount++];
+    // Store item into the current group.
+    CurGroup->Items[CurItemsCount] = Item;
+    return CurGroup->Items[CurItemsCount];
   }
 
   using ItemHandlerTy = function_ref<void(T &)>;
 
   /// Enumerate all items and apply specified \p Handler to each.
   void forEach(ItemHandlerTy Handler) {
-    for (ItemsGroup *CurGroup = GroupsHead; CurGroup != nullptr;
+    for (ItemsGroup *CurGroup = GroupsHead; CurGroup;
          CurGroup = CurGroup->Next) {
-      for (size_t Idx = 0; Idx < CurGroup->ItemsCount; Idx++) {
-        Handler(CurGroup->Items[Idx]);
-      }
+      for (T &Item : *CurGroup)
+        Handler(Item);
     }
   }
 
   /// Check whether list is empty.
-  bool empty() { return GroupsHead == nullptr; }
+  bool empty() { return !GroupsHead; }
 
   /// Erase list.
   void erase() {
@@ -76,13 +79,61 @@
 
 protected:
   struct ItemsGroup {
-    std::array<T, ItemsGroupSize> Items;
-    ItemsGroup *Next = nullptr;
-    size_t ItemsCount = 0;
+    using ArrayTy = std::array<T, ItemsGroupSize>;
+
+    // Array of items kept by this group.
+    ArrayTy Items;
+
+    // Pointer to the next items group.
+    std::atomic<ItemsGroup *> Next = nullptr;
+
+    // Number of items in this group.
+    // NOTE: ItemsCount could be inaccurate as it might be incremented by
+    // several threads. Use getItemsCount() method to get real number of items
+    // inside ItemsGroup.
+    std::atomic<size_t> ItemsCount = 0;
+
+    size_t getItemsCount() const {
+      return std::min(ItemsCount.load(), ItemsGroupSize);
+    }
+
+    typename ArrayTy::iterator begin() { return Items.begin(); }
+    typename ArrayTy::iterator end() { return Items.begin() + getItemsCount(); }
   };
 
-  ItemsGroup *GroupsHead = nullptr;
-  ItemsGroup *LastGroup = nullptr;
+  // Allocate new group. Put allocated group into the \p AtomicGroup if
+  // it is empty. If \p AtomicGroup is filled by another thread then
+  // put allocated group into the end of groups list.
+  // \returns true if allocated group is put into the \p AtomicGroup.
+  bool allocateNewGroup(std::atomic<ItemsGroup *> &AtomicGroup) {
+    ItemsGroup *CurGroup = nullptr;
+
+    // Allocate new group.
+    ItemsGroup *NewGroup = Allocator->Allocate<ItemsGroup>();
+    NewGroup->ItemsCount = 0;
+    NewGroup->Next = nullptr;
+
+    // Try to replace current group with allocated one.
+    if (AtomicGroup.compare_exchange_weak(CurGroup, NewGroup))
+      return true;
+
+    // Put allocated group as last group.
+    while (CurGroup) {
+      ItemsGroup *NextGroup = CurGroup->Next;
+
+      if (!NextGroup) {
+        if (CurGroup->Next.compare_exchange_weak(NextGroup, NewGroup))
+          break;
+      }
+
+      CurGroup = NextGroup;
+    }
+
+    return false;
+  }
+
+  std::atomic<ItemsGroup *> GroupsHead = nullptr;
+  std::atomic<ItemsGroup *> LastGroup = nullptr;
   parallel::PerThreadBumpPtrAllocator *Allocator = nullptr;
 };
 
diff --git a/llvm/lib/DWARFLinkerParallel/DIEAttributeCloner.h b/llvm/lib/DWARFLinkerParallel/DIEAttributeCloner.h
--- a/llvm/lib/DWARFLinkerParallel/DIEAttributeCloner.h
+++ b/llvm/lib/DWARFLinkerParallel/DIEAttributeCloner.h
@@ -17,6 +17,30 @@
 namespace llvm {
 namespace dwarflinker_parallel {
 
+/// Information gathered and exchanged between the various
+/// clone*Attr helpers about the attributes of a particular DIE.
+struct AttributesInfo {
+  AttributesInfo() {}
+
+  /// Short Name.
+  StringEntry *Name = nullptr;
+
+  /// Mangled Name.
+  StringEntry *MangledName = nullptr;
+
+  /// Does the DIE have an address pointing to live code section?
+  bool HasLiveAddress = false;
+
+  /// Is this DIE only a declaration?
+  bool IsDeclaration = false;
+
+  /// Does the DIE have a ranges attribute?
+  bool HasRanges = false;
+
+  /// Does the DIE have a string offset attribute?
+  bool HasStringOffsetBaseAttr = false;
+};
+
 /// This class creates clones of input DIE attributes.
 /// It enumerates attributes of input DIE, creates clone for each
 /// attribute, adds cloned attribute to the output DIE.
@@ -44,29 +68,7 @@
   /// Create abbreviations for the output DIE after all attributes are cloned.
   unsigned finalizeAbbreviations(bool HasChildrenToClone);
 
-  /// Information gathered and exchanged between the various
-  /// clone*Attr helpers about the attributes of a particular DIE.
-  ///
   /// Cannot be used concurrently.
-  struct AttributesInfo {
-    /// Names.
-    StringEntry *Name = nullptr;
-    StringEntry *MangledName = nullptr;
-    StringEntry *NameWithoutTemplate = nullptr;
-
-    /// Does the DIE have a low_pc attribute?
-    bool HasLowPc = false;
-
-    /// Is this DIE only a declaration?
-    bool IsDeclaration = false;
-
-    /// Does the DIE have a ranges attribute?
-    bool HasRanges = false;
-
-    /// Does the DIE have a string offset attribute?
-    bool HasStringOffsetBaseAttr = false;
-  };
-
   AttributesInfo AttrInfo;
 
 protected:
diff --git a/llvm/lib/DWARFLinkerParallel/DIEAttributeCloner.cpp b/llvm/lib/DWARFLinkerParallel/DIEAttributeCloner.cpp
--- a/llvm/lib/DWARFLinkerParallel/DIEAttributeCloner.cpp
+++ b/llvm/lib/DWARFLinkerParallel/DIEAttributeCloner.cpp
@@ -226,7 +226,7 @@
     return 0;
 
   std::optional<std::pair<CompileUnit *, uint32_t>> RefDiePair =
-      CU.resolveDIEReference(Val);
+      CU.resolveDIEReference(Val, ResolveInterCUReferencesMode::Resolve);
   if (!RefDiePair) {
     // If the referenced DIE is not found,  drop the attribute.
     CU.warn("cann't find referenced DIE.", InputDieEntry);
@@ -314,6 +314,11 @@
   }
 
   uint64_t Value;
+  if (AttrSpec.Attr == dwarf::DW_AT_const_value &&
+      (InputDieEntry->getTag() == dwarf::DW_TAG_variable ||
+       InputDieEntry->getTag() == dwarf::DW_TAG_constant))
+    AttrInfo.HasLiveAddress = true;
+
   if (CU.getGlobalData().getOptions().UpdateIndexTablesOnly) {
     if (auto OptionalValue = Val.getAsUnsignedConstant())
       Value = *OptionalValue;
@@ -483,6 +488,11 @@
         (AttrOutOffset + (FinalAttributeSize - Bytes.size()));
   }
 
+  if (HasLocationExpressionAddress)
+    AttrInfo.HasLiveAddress =
+        VarAddressAdjustment.has_value() ||
+        CU.getGlobalData().getOptions().UpdateIndexTablesOnly;
+
   return FinalAttributeSize;
 }
 
@@ -490,7 +500,7 @@
     const DWARFFormValue &Val,
     const DWARFAbbreviationDeclaration::AttributeSpec &AttrSpec) {
   if (AttrSpec.Attr == dwarf::DW_AT_low_pc)
-    AttrInfo.HasLowPc = true;
+    AttrInfo.HasLiveAddress = true;
 
   if (CU.getGlobalData().getOptions().UpdateIndexTablesOnly)
     return Generator
diff --git a/llvm/lib/DWARFLinkerParallel/DWARFEmitterImpl.h b/llvm/lib/DWARFLinkerParallel/DWARFEmitterImpl.h
--- a/llvm/lib/DWARFLinkerParallel/DWARFEmitterImpl.h
+++ b/llvm/lib/DWARFLinkerParallel/DWARFEmitterImpl.h
@@ -35,10 +35,12 @@
 
 template <typename DataT> class AccelTable;
 class MCCodeEmitter;
-class DWARFDebugMacro;
 
 namespace dwarflinker_parallel {
 
+using DebugNamesUnitsOffsets = std::vector<std::variant<MCSymbol *, uint64_t>>;
+using CompUnitIDToIdx = DenseMap<unsigned, size_t>;
+
 /// This class emits DWARF data to the output stream. It emits already
 /// generated section data and specific data, which could not be generated
 /// by CompileUnit.
@@ -71,9 +73,6 @@
   /// Emit specified section data.
   void emitSectionContents(StringRef SecData, StringRef SecName) override;
 
-  /// Emit temporary symbol.
-  MCSymbol *emitTempSym(StringRef SecName, StringRef SymName) override;
-
   /// Emit abbreviations.
   void emitAbbrevs(const SmallVector<std::unique_ptr<DIEAbbrev>> &Abbrevs,
                    unsigned DwarfVersion);
@@ -87,6 +86,23 @@
   /// Returns size of generated .debug_info section.
   uint64_t getDebugInfoSectionSize() const { return DebugInfoSectionSize; }
 
+  /// Emits .debug_names section according to the specified \p Table.
+  void emitDebugNames(AccelTable<DWARF5AccelTableStaticData> &Table,
+                      DebugNamesUnitsOffsets &CUOffsets,
+                      CompUnitIDToIdx &UnitIDToIdxMap);
+
+  /// Emits .apple_names section according to the specified \p Table.
+  void emitAppleNames(AccelTable<AppleAccelTableStaticOffsetData> &Table);
+
+  /// Emits .apple_namespaces section according to the specified \p Table.
+  void emitAppleNamespaces(AccelTable<AppleAccelTableStaticOffsetData> &Table);
+
+  /// Emits .apple_objc section according to the specified \p Table.
+  void emitAppleObjc(AccelTable<AppleAccelTableStaticOffsetData> &Table);
+
+  /// Emits .apple_types section according to the specified \p Table.
+  void emitAppleTypes(AccelTable<AppleAccelTableStaticTypeData> &Table);
+
 private:
   // Enumerate all string patches and write them into the destination section.
   // Order of patches is the same as in original input file. To avoid emitting
diff --git a/llvm/lib/DWARFLinkerParallel/DWARFEmitterImpl.cpp b/llvm/lib/DWARFLinkerParallel/DWARFEmitterImpl.cpp
--- a/llvm/lib/DWARFLinkerParallel/DWARFEmitterImpl.cpp
+++ b/llvm/lib/DWARFLinkerParallel/DWARFEmitterImpl.cpp
@@ -171,18 +171,18 @@
       .Case("debug_line_str", MC->getObjectFileInfo()->getDwarfLineStrSection())
       .Case("debug_str_offsets",
             MC->getObjectFileInfo()->getDwarfStrOffSection())
-      .Default(nullptr);
-}
-
-MCSymbol *DwarfEmitterImpl::emitTempSym(StringRef SecName, StringRef SymName) {
-  if (MCSection *Section = switchSection(SecName)) {
-    MS->switchSection(Section);
-    MCSymbol *Res = Asm->createTempSymbol(SymName);
-    Asm->OutStreamer->emitLabel(Res);
-    return Res;
-  }
+      .Case("debug_pubnames",
+            MC->getObjectFileInfo()->getDwarfPubNamesSection())
+      .Case("debug_pubtypes",
+            MC->getObjectFileInfo()->getDwarfPubTypesSection())
+      .Case("debug_names", MC->getObjectFileInfo()->getDwarfDebugNamesSection())
+      .Case("apple_names", MC->getObjectFileInfo()->getDwarfAccelNamesSection())
+      .Case("apple_namespac",
+            MC->getObjectFileInfo()->getDwarfAccelNamespaceSection())
+      .Case("apple_objc", MC->getObjectFileInfo()->getDwarfAccelObjCSection())
+      .Case("apple_types", MC->getObjectFileInfo()->getDwarfAccelTypesSection())
 
-  return nullptr;
+      .Default(nullptr);
 }
 
 void DwarfEmitterImpl::emitAbbrevs(
@@ -200,8 +200,7 @@
   // Emit size of content not including length itself. The size has already
   // been computed in CompileUnit::computeOffsets(). Subtract 4 to that size to
   // account for the length field.
-  Asm->emitInt32(Unit.getDebugInfoHeaderSize() +
-                 Unit.getOutUnitDIE()->getSize() - 4);
+  Asm->emitInt32(Unit.getUnitSize() - 4);
   Asm->emitInt16(Unit.getVersion());
 
   if (Unit.getVersion() >= 5) {
@@ -224,5 +223,50 @@
   DebugInfoSectionSize += Die.getSize();
 }
 
+void DwarfEmitterImpl::emitDebugNames(
+    AccelTable<DWARF5AccelTableStaticData> &Table,
+    DebugNamesUnitsOffsets &CUOffsets, CompUnitIDToIdx &CUidToIdx) {
+  if (CUOffsets.empty())
+    return;
+
+  Asm->OutStreamer->switchSection(MOFI->getDwarfDebugNamesSection());
+  emitDWARF5AccelTable(Asm.get(), Table, CUOffsets,
+                       [&CUidToIdx](const DWARF5AccelTableStaticData &Entry) {
+                         return CUidToIdx[Entry.getCUIndex()];
+                       });
+}
+
+void DwarfEmitterImpl::emitAppleNamespaces(
+    AccelTable<AppleAccelTableStaticOffsetData> &Table) {
+  Asm->OutStreamer->switchSection(MOFI->getDwarfAccelNamespaceSection());
+  auto *SectionBegin = Asm->createTempSymbol("namespac_begin");
+  Asm->OutStreamer->emitLabel(SectionBegin);
+  emitAppleAccelTable(Asm.get(), Table, "namespac", SectionBegin);
+}
+
+void DwarfEmitterImpl::emitAppleNames(
+    AccelTable<AppleAccelTableStaticOffsetData> &Table) {
+  Asm->OutStreamer->switchSection(MOFI->getDwarfAccelNamesSection());
+  auto *SectionBegin = Asm->createTempSymbol("names_begin");
+  Asm->OutStreamer->emitLabel(SectionBegin);
+  emitAppleAccelTable(Asm.get(), Table, "names", SectionBegin);
+}
+
+void DwarfEmitterImpl::emitAppleObjc(
+    AccelTable<AppleAccelTableStaticOffsetData> &Table) {
+  Asm->OutStreamer->switchSection(MOFI->getDwarfAccelObjCSection());
+  auto *SectionBegin = Asm->createTempSymbol("objc_begin");
+  Asm->OutStreamer->emitLabel(SectionBegin);
+  emitAppleAccelTable(Asm.get(), Table, "objc", SectionBegin);
+}
+
+void DwarfEmitterImpl::emitAppleTypes(
+    AccelTable<AppleAccelTableStaticTypeData> &Table) {
+  Asm->OutStreamer->switchSection(MOFI->getDwarfAccelTypesSection());
+  auto *SectionBegin = Asm->createTempSymbol("types_begin");
+  Asm->OutStreamer->emitLabel(SectionBegin);
+  emitAppleAccelTable(Asm.get(), Table, "types", SectionBegin);
+}
+
 } // end of namespace dwarflinker_parallel
 } // namespace llvm
diff --git a/llvm/lib/DWARFLinkerParallel/DWARFLinkerCompileUnit.h b/llvm/lib/DWARFLinkerParallel/DWARFLinkerCompileUnit.h
--- a/llvm/lib/DWARFLinkerParallel/DWARFLinkerCompileUnit.h
+++ b/llvm/lib/DWARFLinkerParallel/DWARFLinkerCompileUnit.h
@@ -19,6 +19,13 @@
 
 using OffsetToUnitTy = function_ref<CompileUnit *(uint64_t Offset)>;
 
+struct AttributesInfo;
+
+enum ResolveInterCUReferencesMode : bool {
+  Resolve = true,
+  AvoidResolving = false,
+};
+
 /// Stores all information related to a compile unit, be it in its original
 /// instance of the object file or its brand new cloned and generated DIE tree.
 class CompileUnit : public DwarfUnit {
@@ -293,7 +300,8 @@
   /// \returns referenced die and corresponding compilation unit.
   ///          compilation unit is null if reference could not be resolved.
   std::optional<std::pair<CompileUnit *, uint32_t>>
-  resolveDIEReference(const DWARFFormValue &RefValue);
+  resolveDIEReference(const DWARFFormValue &RefValue,
+                      ResolveInterCUReferencesMode CanResolveInterCUReferences);
   /// @}
 
   /// Add a function range [\p LowPC, \p HighPC) that is relocated by applying
@@ -513,6 +521,14 @@
   void emitMacroTableImpl(const DWARFDebugMacro *MacroTable,
                           uint64_t OffsetToMacroTable, bool hasDWARFv5Header);
 
+  /// Store accelerator information for the \p InputDieEntry.
+  void rememberAcceleratorEntries(const DWARFDebugInfoEntry *InputDieEntry,
+                                  uint64_t OutOffset, AttributesInfo &AttrInfo);
+
+  /// Store ObjC accelerator information for the \p InputDieEntry.
+  void rememberObjCAccelerator(const DWARFDebugInfoEntry *InputDieEntry,
+                               uint64_t OutOffset, AttributesInfo &AttrInfo);
+
   /// DWARFFile containing this compile unit.
   DWARFFile &File;
 
@@ -528,10 +544,6 @@
   ResolvedPathsMap ResolvedFullPaths;
   StringMap<StringEntry *> ResolvedParentPaths;
 
-  /// This field instructs compile unit to store DIE name with stripped
-  /// template parameters into the accelerator table.
-  bool CanStripTemplateName = false;
-
   /// Maps an address into the index inside .debug_addr section.
   IndexedValuesMap<uint64_t> DebugAddrIndexMap;
 
diff --git a/llvm/lib/DWARFLinkerParallel/DWARFLinkerCompileUnit.cpp b/llvm/lib/DWARFLinkerParallel/DWARFLinkerCompileUnit.cpp
--- a/llvm/lib/DWARFLinkerParallel/DWARFLinkerCompileUnit.cpp
+++ b/llvm/lib/DWARFLinkerParallel/DWARFLinkerCompileUnit.cpp
@@ -9,7 +9,9 @@
 #include "DWARFLinkerCompileUnit.h"
 #include "DIEAttributeCloner.h"
 #include "DIEGenerator.h"
+#include "llvm/DebugInfo/DWARF/DWARFAcceleratorTable.h"
 #include "llvm/DebugInfo/DWARF/DWARFDebugMacro.h"
+#include "llvm/Support/DJB.h"
 #include "llvm/Support/FileSystem.h"
 #include "llvm/Support/FormatVariadic.h"
 
@@ -30,8 +32,8 @@
   // with marking from "LivenessAnalysisDone" stage partially
   // done. That marking should be cleared.
 
-  for (DIEInfo &DieInfo : DieInfoArray)
-    DieInfo.unsetFlagsWhichSetDuringLiveAnalysis();
+  for (DIEInfo &Info : DieInfoArray)
+    Info.unsetFlagsWhichSetDuringLiveAnalysis();
 
   LowPc = std::nullopt;
   HighPc = 0;
@@ -43,6 +45,7 @@
     return;
   }
 
+  AcceleratorRecords.erase();
   AbbreviationsSet.clear();
   Abbreviations.clear();
   OutUnitDIE = nullptr;
@@ -211,10 +214,11 @@
 
 void CompileUnit::updateDieRefPatchesWithClonedOffsets() {
   if (std::optional<SectionDescriptor *> DebugInfoSection =
-          getSectionDescriptor(DebugSectionKind::DebugInfo)) {
+          tryGetSectionDescriptor(DebugSectionKind::DebugInfo)) {
 
     (*DebugInfoSection)
         ->ListDebugDieRefPatch.forEach([](DebugDieRefPatch &Patch) {
+          /// Replace stored DIE indexes with DIE output offsets.
           Patch.RefDieIdxOrClonedOffset =
               Patch.RefCU.getPointer()->getDieOutOffset(
                   Patch.RefDieIdxOrClonedOffset);
@@ -223,6 +227,7 @@
     (*DebugInfoSection)
         ->ListDebugULEB128DieRefPatch.forEach(
             [](DebugULEB128DieRefPatch &Patch) {
+              /// Replace stored DIE indexes with DIE output offsets.
               Patch.RefDieIdxOrClonedOffset =
                   Patch.RefCU.getPointer()->getDieOutOffset(
                       Patch.RefDieIdxOrClonedOffset);
@@ -230,10 +235,11 @@
   }
 
   if (std::optional<SectionDescriptor *> DebugLocSection =
-          getSectionDescriptor(DebugSectionKind::DebugLoc)) {
+          tryGetSectionDescriptor(DebugSectionKind::DebugLoc)) {
     (*DebugLocSection)
         ->ListDebugULEB128DieRefPatch.forEach(
             [](DebugULEB128DieRefPatch &Patch) {
+              /// Replace stored DIE indexes with DIE output offsets.
               Patch.RefDieIdxOrClonedOffset =
                   Patch.RefCU.getPointer()->getDieOutOffset(
                       Patch.RefDieIdxOrClonedOffset);
@@ -241,10 +247,11 @@
   }
 
   if (std::optional<SectionDescriptor *> DebugLocListsSection =
-          getSectionDescriptor(DebugSectionKind::DebugLocLists)) {
+          tryGetSectionDescriptor(DebugSectionKind::DebugLocLists)) {
     (*DebugLocListsSection)
         ->ListDebugULEB128DieRefPatch.forEach(
             [](DebugULEB128DieRefPatch &Patch) {
+              /// Replace stored DIE indexes with DIE output offsets.
               Patch.RefDieIdxOrClonedOffset =
                   Patch.RefCU.getPointer()->getDieOutOffset(
                       Patch.RefDieIdxOrClonedOffset);
@@ -253,7 +260,9 @@
 }
 
 std::optional<std::pair<CompileUnit *, uint32_t>>
-CompileUnit::resolveDIEReference(const DWARFFormValue &RefValue) {
+CompileUnit::resolveDIEReference(
+    const DWARFFormValue &RefValue,
+    ResolveInterCUReferencesMode CanResolveInterCUReferences) {
   if (std::optional<DWARFFormValue::UnitOffset> Ref =
           *RefValue.getAsRelativeReference()) {
     if (Ref->Unit != nullptr) {
@@ -262,17 +271,27 @@
       if (std::optional<uint32_t> RefDieIdx =
               getDIEIndexForOffset(Ref->Unit->getOffset() + Ref->Offset))
         return std::make_pair(this, *RefDieIdx);
-    } else if (CompileUnit *RefCU = getUnitFromOffset(Ref->Offset)) {
-      // Referenced DIE is in other compile unit.
+    }
 
-      // Check whether DIEs are loaded for that compile unit.
-      enum Stage ReferredCUStage = RefCU->getStage();
-      if (ReferredCUStage < Stage::Loaded || ReferredCUStage > Stage::Cloned)
+    if (CompileUnit *RefCU = getUnitFromOffset(Ref->Offset)) {
+      if (RefCU->getUniqueID() == getUniqueID()) {
+        // Referenced DIE is in current compile unit.
+        if (std::optional<uint32_t> RefDieIdx =
+                getDIEIndexForOffset(Ref->Offset))
+          return std::make_pair(this, *RefDieIdx);
+      } else if (CanResolveInterCUReferences) {
+        // Referenced DIE is in other compile unit.
+
+        // Check whether DIEs are loaded for that compile unit.
+        enum Stage ReferredCUStage = RefCU->getStage();
+        if (ReferredCUStage < Stage::Loaded || ReferredCUStage > Stage::Cloned)
+          return std::make_pair(RefCU, 0);
+
+        if (std::optional<uint32_t> RefDieIdx =
+                RefCU->getDIEIndexForOffset(Ref->Offset))
+          return std::make_pair(RefCU, *RefDieIdx);
+      } else
         return std::make_pair(RefCU, 0);
-
-      if (std::optional<uint32_t> RefDieIdx =
-              RefCU->getDIEIndexForOffset(Ref->Offset))
-        return std::make_pair(RefCU, *RefDieIdx);
     }
   }
 
@@ -1136,10 +1155,6 @@
   if (!OrigUnitDIE.isValid())
     return Error::success();
 
-  CanStripTemplateName =
-      llvm::is_contained(getGlobalData().getOptions().AccelTables,
-                         DWARFLinker::AccelTableKind::Apple);
-
   // Clone input DIE entry recursively.
   DIE *OutCUDie =
       cloneDIE(OrigUnitDIE.getDebugInfoEntry(), getDebugInfoHeaderSize(),
@@ -1172,6 +1187,11 @@
   if (Error Err = emitDebugAddrSection())
     return Err;
 
+  // Generate Pub accelerator tables.
+  if (llvm::is_contained(GlobalData.getOptions().AccelTables,
+                         DWARFLinker::AccelTableKind::Pub))
+    emitPubAccelerators();
+
   if (Error Err = emitDebugStringOffsetSection())
     return Err;
 
@@ -1221,6 +1241,10 @@
       VarAddressAdjustment, HasLocationExpressionAddress);
   AttributesCloner.clone();
 
+  // Remember accelerator info.
+  rememberAcceleratorEntries(InputDieEntry, OutOffset,
+                             AttributesCloner.AttrInfo);
+
   bool HasChildrenToClone = Info.getKeepChildren();
   OutOffset = AttributesCloner.finalizeAbbreviations(HasChildrenToClone);
 
@@ -1400,3 +1424,202 @@
   llvm::errs() << "}\n";
 }
 #endif // if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
+
+static uint32_t hashFullyQualifiedName(CompileUnit *InputCU, DWARFDie &InputDIE,
+                                       int ChildRecurseDepth = 0) {
+  const char *Name = nullptr;
+  CompileUnit *CU = InputCU;
+  std::optional<DWARFFormValue> RefVal;
+
+  // Usually name`s depth does not exceed 3. Set maximal depth
+  // to 1000 here, to avoid infinite loop in case incorrect input
+  // DWARF.
+  size_t MaxNameDepth = 1000;
+  size_t CurNameDepth = 0;
+
+  while (CurNameDepth++ < MaxNameDepth) {
+    if (const char *CurrentName = InputDIE.getName(DINameKind::ShortName))
+      Name = CurrentName;
+
+    if (!(RefVal = InputDIE.find(dwarf::DW_AT_specification)) &&
+        !(RefVal = InputDIE.find(dwarf::DW_AT_abstract_origin)))
+      break;
+
+    if (!RefVal->isFormClass(DWARFFormValue::FC_Reference))
+      break;
+
+    std::optional<std::pair<CompileUnit *, uint32_t>> RefDie =
+        CU->resolveDIEReference(*RefVal, ResolveInterCUReferencesMode::Resolve);
+    if (!RefDie)
+      break;
+
+    assert(RefDie->second != 0);
+
+    CU = RefDie->first;
+    InputDIE = RefDie->first->getDIEAtIndex(RefDie->second);
+  }
+
+  if (!Name && InputDIE.getTag() == dwarf::DW_TAG_namespace)
+    Name = "(anonymous namespace)";
+
+  DWARFDie ParentDie = InputDIE.getParent();
+  if (!ParentDie.isValid() || ParentDie.getTag() == dwarf::DW_TAG_compile_unit)
+    return djbHash(Name ? Name : "", djbHash(ChildRecurseDepth ? "" : "::"));
+
+  return djbHash(
+      (Name ? Name : ""),
+      djbHash((Name ? "::" : ""),
+              hashFullyQualifiedName(CU, ParentDie, ++ChildRecurseDepth)));
+}
+
+void CompileUnit::rememberAcceleratorEntries(
+    const DWARFDebugInfoEntry *InputDieEntry, uint64_t OutOffset,
+    AttributesInfo &AttrInfo) {
+  if (GlobalData.getOptions().AccelTables.empty())
+    return;
+
+  DWARFDie InputDIE = getDIE(InputDieEntry);
+
+  // Look for short name recursively if short name is not known yet.
+  if (AttrInfo.Name == nullptr)
+    if (const char *ShortName = InputDIE.getShortName())
+      AttrInfo.Name = getGlobalData().getStringPool().insert(ShortName).first;
+
+  switch (InputDieEntry->getTag()) {
+  case dwarf::DW_TAG_array_type:
+  case dwarf::DW_TAG_class_type:
+  case dwarf::DW_TAG_enumeration_type:
+  case dwarf::DW_TAG_pointer_type:
+  case dwarf::DW_TAG_reference_type:
+  case dwarf::DW_TAG_string_type:
+  case dwarf::DW_TAG_structure_type:
+  case dwarf::DW_TAG_subroutine_type:
+  case dwarf::DW_TAG_typedef:
+  case dwarf::DW_TAG_union_type:
+  case dwarf::DW_TAG_ptr_to_member_type:
+  case dwarf::DW_TAG_set_type:
+  case dwarf::DW_TAG_subrange_type:
+  case dwarf::DW_TAG_base_type:
+  case dwarf::DW_TAG_const_type:
+  case dwarf::DW_TAG_constant:
+  case dwarf::DW_TAG_file_type:
+  case dwarf::DW_TAG_namelist:
+  case dwarf::DW_TAG_packed_type:
+  case dwarf::DW_TAG_volatile_type:
+  case dwarf::DW_TAG_restrict_type:
+  case dwarf::DW_TAG_atomic_type:
+  case dwarf::DW_TAG_interface_type:
+  case dwarf::DW_TAG_unspecified_type:
+  case dwarf::DW_TAG_shared_type:
+  case dwarf::DW_TAG_immutable_type:
+  case dwarf::DW_TAG_rvalue_reference_type: {
+    if (!AttrInfo.IsDeclaration && AttrInfo.Name != nullptr &&
+        !AttrInfo.Name->getKey().empty()) {
+      uint32_t Hash = hashFullyQualifiedName(this, InputDIE);
+
+      uint64_t RuntimeLang =
+          dwarf::toUnsigned(InputDIE.find(dwarf::DW_AT_APPLE_runtime_class))
+              .value_or(0);
+
+      bool ObjCClassIsImplementation =
+          (RuntimeLang == dwarf::DW_LANG_ObjC ||
+           RuntimeLang == dwarf::DW_LANG_ObjC_plus_plus) &&
+          dwarf::toUnsigned(
+              InputDIE.find(dwarf::DW_AT_APPLE_objc_complete_type))
+              .value_or(0);
+
+      rememberTypeForAccelerators(AttrInfo.Name, OutOffset,
+                                  InputDieEntry->getTag(), Hash,
+                                  ObjCClassIsImplementation);
+    }
+  } break;
+  case dwarf::DW_TAG_namespace: {
+    if (AttrInfo.Name == nullptr)
+      AttrInfo.Name =
+          getGlobalData().getStringPool().insert("(anonymous namespace)").first;
+
+    rememberNamespaceForAccelerators(AttrInfo.Name, OutOffset,
+                                     InputDieEntry->getTag());
+  } break;
+  case dwarf::DW_TAG_imported_declaration: {
+    if (AttrInfo.Name != nullptr)
+      rememberNamespaceForAccelerators(AttrInfo.Name, OutOffset,
+                                       InputDieEntry->getTag());
+  } break;
+  case dwarf::DW_TAG_compile_unit:
+  case dwarf::DW_TAG_lexical_block: {
+    // Nothing to do.
+  } break;
+  default:
+    if (AttrInfo.HasLiveAddress || AttrInfo.HasRanges) {
+      if (AttrInfo.Name != nullptr)
+        rememberNameForAccelerators(
+            AttrInfo.Name, OutOffset, InputDieEntry->getTag(),
+            InputDieEntry->getTag() == dwarf::DW_TAG_inlined_subroutine);
+
+      // Look for mangled name recursively if mangled name is not known yet.
+      if (AttrInfo.MangledName == nullptr)
+        if (const char *LinkageName = InputDIE.getLinkageName())
+          AttrInfo.MangledName =
+              getGlobalData().getStringPool().insert(LinkageName).first;
+
+      if (AttrInfo.MangledName != nullptr &&
+          AttrInfo.MangledName != AttrInfo.Name)
+        rememberNameForAccelerators(
+            AttrInfo.MangledName, OutOffset, InputDieEntry->getTag(),
+            InputDieEntry->getTag() == dwarf::DW_TAG_inlined_subroutine);
+
+      // Strip template parameters from the short name.
+      if (AttrInfo.Name != nullptr && AttrInfo.MangledName != AttrInfo.Name &&
+          (InputDieEntry->getTag() != dwarf::DW_TAG_inlined_subroutine)) {
+        if (std::optional<StringRef> Name =
+                StripTemplateParameters(AttrInfo.Name->getKey())) {
+          StringEntry *NameWithoutTemplateParams =
+              getGlobalData().getStringPool().insert(*Name).first;
+
+          rememberNameForAccelerators(NameWithoutTemplateParams, OutOffset,
+                                      InputDieEntry->getTag(), true);
+        }
+      }
+
+      if (AttrInfo.Name)
+        rememberObjCAccelerator(InputDieEntry, OutOffset, AttrInfo);
+    }
+    break;
+  }
+}
+
+void CompileUnit::rememberObjCAccelerator(
+    const DWARFDebugInfoEntry *InputDieEntry, uint64_t OutOffset,
+    AttributesInfo &AttrInfo) {
+  std::optional<ObjCSelectorNames> Names =
+      getObjCNamesIfSelector(AttrInfo.Name->getKey());
+  if (!Names)
+    return;
+
+  StringEntry *Selector =
+      getGlobalData().getStringPool().insert(Names->Selector).first;
+  rememberNameForAccelerators(Selector, OutOffset, InputDieEntry->getTag(),
+                              true);
+  StringEntry *ClassName =
+      getGlobalData().getStringPool().insert(Names->ClassName).first;
+  rememberObjCNameForAccelerators(ClassName, OutOffset,
+                                  InputDieEntry->getTag());
+  if (Names->ClassNameNoCategory) {
+    StringEntry *ClassNameNoCategory = getGlobalData()
+                                           .getStringPool()
+                                           .insert(*Names->ClassNameNoCategory)
+                                           .first;
+    rememberObjCNameForAccelerators(ClassNameNoCategory, OutOffset,
+                                    InputDieEntry->getTag());
+  }
+  if (Names->MethodNameNoCategory) {
+    StringEntry *MethodNameNoCategory =
+        getGlobalData()
+            .getStringPool()
+            .insert(*Names->MethodNameNoCategory)
+            .first;
+    rememberNameForAccelerators(MethodNameNoCategory, OutOffset,
+                                InputDieEntry->getTag(), true);
+  }
+}
diff --git a/llvm/lib/DWARFLinkerParallel/DWARFLinkerImpl.h b/llvm/lib/DWARFLinkerParallel/DWARFLinkerImpl.h
--- a/llvm/lib/DWARFLinkerParallel/DWARFLinkerImpl.h
+++ b/llvm/lib/DWARFLinkerParallel/DWARFLinkerImpl.h
@@ -319,37 +319,47 @@
   /// Enumerate all compile units and assign offsets to their strings.
   void assignOffsetsToStrings();
 
-  /// Enumerates specified string patches, assigns offset and index.
-  template <typename PatchTy>
-  void assignOffsetsToStringsImpl(
-      ArrayList<PatchTy> &Section, size_t &IndexAccumulator,
-      uint64_t &OffsetAccumulator,
-      StringEntryToDwarfStringPoolEntryMap &StringsForEmission);
-
   /// Print statistic for processed Debug Info.
   void printStatistic();
 
+  enum StringDestinationKind : uint8_t { DebugStr, DebugLineStr };
+
+  /// Enumerates all strings.
+  void forEachOutputString(
+      function_ref<void(StringDestinationKind, const StringEntry *)>
+          StringHandler);
+
   /// Enumerates sections for modules, invariant for object files, compile
   /// units.
   void forEachObjectSectionsSet(
       function_ref<void(OutputSections &SectionsSet)> SectionsSetHandler);
 
+  /// Enumerates all comple units.
+  void forEachCompileUnit(function_ref<void(CompileUnit *CU)> UnitHandler);
+
   /// Enumerates all patches and update them with the correct values.
   void patchOffsetsAndSizes();
 
   /// Emit debug sections common for all input files.
-  void emitCommonSections();
+  void emitCommonSectionsAndWriteCompileUnitsToTheOutput();
+
+  /// Emit apple accelerator sections.
+  void emitAppleAcceleratorSections(const Triple &TargetTriple);
+
+  /// Emit .debug_names section.
+  void emitDWARFv5DebugNamesSection(const Triple &TargetTriple);
+
+  /// Emit string sections.
+  void emitStringSections();
 
   /// Cleanup data(string pools) after output sections are generated.
-  void cleanupDataAfterOutputSectionsAreGenerated();
+  void cleanupDataAfterDWARFOutputIsWritten();
 
   /// Enumerate all compile units and put their data into the output stream.
-  void writeDWARFToTheOutput();
+  void writeCompileUnitsToTheOutput();
 
-  template <typename PatchTy>
-  void emitStringsImpl(ArrayList<PatchTy> &StringPatches,
-                       const StringEntryToDwarfStringPoolEntryMap &Strings,
-                       uint64_t &NextOffset, SectionDescriptor &OutSection);
+  /// Enumerate common sections and put their data into the output stream.
+  void writeCommonSectionsToTheOutput();
 
   /// \defgroup Data members accessed asinchroniously.
   ///
diff --git a/llvm/lib/DWARFLinkerParallel/DWARFLinkerImpl.cpp b/llvm/lib/DWARFLinkerParallel/DWARFLinkerImpl.cpp
--- a/llvm/lib/DWARFLinkerParallel/DWARFLinkerImpl.cpp
+++ b/llvm/lib/DWARFLinkerParallel/DWARFLinkerImpl.cpp
@@ -733,7 +733,6 @@
   uint64_t CurrentOffset = CU.getDebugInfoHeaderSize();
   DIE *CUDie =
       ParentGenerator.createDIE(dwarf::DW_TAG_compile_unit, CurrentOffset);
-  CU.setOutUnitDIE(CUDie);
 
   DebugInfoSection.notePatchWithOffsetUpdate(
       DebugStrPatch{{CurrentOffset},
@@ -796,11 +795,7 @@
 
   CurrentOffset += 1; // End of children
   CUDie->setSize(CurrentOffset - CUDie->getOffset());
-
-  uint64_t UnitSize = 0;
-  UnitSize += CU.getDebugInfoHeaderSize();
-  UnitSize += CUDie->getSize();
-  CU.setUnitSize(UnitSize);
+  CU.setOutUnitDIE(CUDie);
 
   if (GlobalData.getOptions().NoOutput)
     return Error::success();
@@ -822,17 +817,15 @@
   // Patch size/offsets fields according to the assigned CU offsets.
   patchOffsetsAndSizes();
 
-  // FIXME: Build accelerator tables.
+  // Emit common sections and write debug tables from all object files/compile
+  // units into the resulting file.
+  emitCommonSectionsAndWriteCompileUnitsToTheOutput();
 
-  // Emit common sections.
-  emitCommonSections();
+  // Write common debug sections into the resulting file.
+  writeCommonSectionsToTheOutput();
 
   // Cleanup data.
-  cleanupDataAfterOutputSectionsAreGenerated();
-
-  // Write debug tables from all object files/compile units into the
-  // resulting file.
-  writeDWARFToTheOutput();
+  cleanupDataAfterDWARFOutputIsWritten();
 
   if (GlobalData.getOptions().Statistics)
     printStatistic();
@@ -848,7 +841,7 @@
 
     for (std::unique_ptr<CompileUnit> &CU : Context->CompileUnits)
       if (std::optional<SectionDescriptor *> DebugInfo =
-              CU->getSectionDescriptor(DebugSectionKind::DebugInfo))
+              CU->tryGetSectionDescriptor(DebugSectionKind::DebugInfo))
         AllDebugInfoSectionsSize += (*DebugInfo)->getContents().size();
 
     SizeByObject[Context->InputDWARFFile.FileName].Input =
@@ -916,42 +909,32 @@
   size_t CurDebugLineStrIndex = 0;
   uint64_t CurDebugLineStrOffset = 0;
 
-  // To save space we do not create any separate string table.
-  // We use already allocated string patches and assign offsets
-  // to them in the natural order.
-  // ASSUMPTION: strings should be stored into .debug_str/.debug_line_str
-  // sections in the same order as they were assigned offsets.
-
-  forEachObjectSectionsSet([&](OutputSections &SectionsSet) {
-    SectionsSet.forEach([&](SectionDescriptor &OutSection) {
-      assignOffsetsToStringsImpl(OutSection.ListDebugStrPatch, CurDebugStrIndex,
-                                 CurDebugStrOffset, DebugStrStrings);
-
-      assignOffsetsToStringsImpl(OutSection.ListDebugLineStrPatch,
-                                 CurDebugLineStrIndex, CurDebugLineStrOffset,
-                                 DebugLineStrStrings);
-    });
-  });
-}
-
-template <typename PatchTy>
-void DWARFLinkerImpl::assignOffsetsToStringsImpl(
-    ArrayList<PatchTy> &Patches, size_t &IndexAccumulator,
-    uint64_t &OffsetAccumulator,
-    StringEntryToDwarfStringPoolEntryMap &StringsForEmission) {
-
-  // Enumerates all patches, adds string into the
-  // StringEntry->DwarfStringPoolEntry map, assign offset and index to the
-  // string if it is not indexed yet.
-  Patches.forEach([&](PatchTy &Patch) {
-    DwarfStringPoolEntryWithExtString *Entry =
-        StringsForEmission.add(Patch.String);
-    assert(Entry != nullptr);
-
-    if (!Entry->isIndexed()) {
-      Entry->Offset = OffsetAccumulator;
-      OffsetAccumulator += Entry->String.size() + 1;
-      Entry->Index = IndexAccumulator++;
+  // Enumerates all strings, add them into the DwarfStringPoolEntry map,
+  // assign offset and index to the string if it is not indexed yet.
+  forEachOutputString([&](StringDestinationKind Kind,
+                          const StringEntry *String) {
+    switch (Kind) {
+    case StringDestinationKind::DebugStr: {
+      DwarfStringPoolEntryWithExtString *Entry = DebugStrStrings.add(String);
+      assert(Entry != nullptr);
+
+      if (!Entry->isIndexed()) {
+        Entry->Offset = CurDebugStrOffset;
+        CurDebugStrOffset += Entry->String.size() + 1;
+        Entry->Index = CurDebugStrIndex++;
+      }
+    } break;
+    case StringDestinationKind::DebugLineStr: {
+      DwarfStringPoolEntryWithExtString *Entry =
+          DebugLineStrStrings.add(String);
+      assert(Entry != nullptr);
+
+      if (!Entry->isIndexed()) {
+        Entry->Offset = CurDebugLineStrOffset;
+        CurDebugLineStrOffset += Entry->String.size() + 1;
+        Entry->Index = CurDebugLineStrIndex++;
+      }
+    } break;
     }
   });
 }
@@ -964,6 +947,31 @@
   });
 }
 
+void DWARFLinkerImpl::forEachOutputString(
+    function_ref<void(StringDestinationKind Kind, const StringEntry *String)>
+        StringHandler) {
+  // To save space we do not create any separate string table.
+  // We use already allocated string patches and accelerator entries:
+  // enumerate them in natural order and assign offsets.
+  // ASSUMPTION: strings should be stored into .debug_str/.debug_line_str
+  // sections in the same order as they were assigned offsets.
+  forEachCompileUnit([&](CompileUnit *CU) {
+    CU->forEach([&](SectionDescriptor &OutSection) {
+      OutSection.ListDebugStrPatch.forEach([&](DebugStrPatch &Patch) {
+        StringHandler(StringDestinationKind::DebugStr, Patch.String);
+      });
+
+      OutSection.ListDebugLineStrPatch.forEach([&](DebugLineStrPatch &Patch) {
+        StringHandler(StringDestinationKind::DebugLineStr, Patch.String);
+      });
+    });
+
+    CU->AcceleratorRecords.forEach([&](DwarfUnit::AccelInfo &Info) {
+      StringHandler(DebugStr, Info.String);
+    });
+  });
+}
+
 void DWARFLinkerImpl::forEachObjectSectionsSet(
     function_ref<void(OutputSections &)> SectionsSetHandler) {
   // Handle all modules first(before regular compilation units).
@@ -981,6 +989,19 @@
   }
 }
 
+void DWARFLinkerImpl::forEachCompileUnit(
+    function_ref<void(CompileUnit *CU)> UnitHandler) {
+  // Enumerate module units.
+  for (const std::unique_ptr<LinkContext> &Context : ObjectContexts)
+    for (LinkContext::RefModuleUnit &ModuleUnit : Context->ModulesCompileUnits)
+      UnitHandler(ModuleUnit.Unit.get());
+
+  // Enumerate compile units.
+  for (const std::unique_ptr<LinkContext> &Context : ObjectContexts)
+    for (std::unique_ptr<CompileUnit> &CU : Context->CompileUnits)
+      UnitHandler(CU.get());
+}
+
 void DWARFLinkerImpl::patchOffsetsAndSizes() {
   forEachObjectSectionsSet([&](OutputSections &SectionsSet) {
     SectionsSet.forEach([&](SectionDescriptor &OutSection) {
@@ -990,78 +1011,292 @@
   });
 }
 
-template <typename PatchTy>
-void DWARFLinkerImpl::emitStringsImpl(
-    ArrayList<PatchTy> &StringPatches,
-    const StringEntryToDwarfStringPoolEntryMap &Strings, uint64_t &NextOffset,
-    SectionDescriptor &OutSection) {
-  // Enumerate all string patches and write strings into the destination
-  // section. We enumerate patches to have a predictable order of strings(i.e.
-  // strings are emitted in the order as they appear in the patches).
-  StringPatches.forEach([&](const PatchTy &Patch) {
-    DwarfStringPoolEntryWithExtString *StringToEmit =
-        Strings.getExistingEntry(Patch.String);
-    assert(StringToEmit->isIndexed());
-
-    // Patches can refer the same strings. We use accumulated NextOffset
-    // to understand whether corresponding string is already emitted.
-    // Skip patch if string is already emitted.
-    if (StringToEmit->Offset >= NextOffset) {
-      NextOffset = StringToEmit->Offset + StringToEmit->String.size() + 1;
-      // Emit the string itself.
-      OutSection.emitInplaceString(StringToEmit->String);
-    }
-  });
-}
-
-void DWARFLinkerImpl::emitCommonSections() {
+void DWARFLinkerImpl::emitCommonSectionsAndWriteCompileUnitsToTheOutput() {
   parallel::TaskGroup TG;
 
-  SectionDescriptor &OutDebugStrSection =
-      CommonSections.getOrCreateSectionDescriptor(DebugSectionKind::DebugStr);
-  SectionDescriptor &OutDebugLineStrSection =
-      CommonSections.getOrCreateSectionDescriptor(
-          DebugSectionKind::DebugLineStr);
-
-  // Emit .debug_str section.
-  TG.spawn([&]() {
-    uint64_t DebugStrNextOffset = 0;
-
-    // Emit zero length string. Accelerator tables does not work correctly
-    // if the first string is not zero length string.
-    OutDebugStrSection.emitInplaceString("");
-    DebugStrNextOffset++;
-
-    forEachObjectSectionsSet([&](OutputSections &Sections) {
-      Sections.forEach([&](SectionDescriptor &Section) {
-        emitStringsImpl(Section.ListDebugStrPatch, DebugStrStrings,
-                        DebugStrNextOffset, OutDebugStrSection);
+  // Create section descriptors ahead if they are not exist at the moment.
+  // SectionDescriptors container is not thread safe. Thus we should be sure
+  // that descriptors would not be created in following parallel tasks.
+
+  CommonSections.getOrCreateSectionDescriptor(DebugSectionKind::DebugStr);
+  CommonSections.getOrCreateSectionDescriptor(DebugSectionKind::DebugLineStr);
+
+  if (llvm::is_contained(GlobalData.Options.AccelTables,
+                         AccelTableKind::Apple)) {
+    CommonSections.getOrCreateSectionDescriptor(DebugSectionKind::AppleNames);
+    CommonSections.getOrCreateSectionDescriptor(
+        DebugSectionKind::AppleNamespaces);
+    CommonSections.getOrCreateSectionDescriptor(DebugSectionKind::AppleObjC);
+    CommonSections.getOrCreateSectionDescriptor(DebugSectionKind::AppleTypes);
+  }
+
+  if (llvm::is_contained(GlobalData.Options.AccelTables,
+                         AccelTableKind::DebugNames))
+    CommonSections.getOrCreateSectionDescriptor(DebugSectionKind::DebugNames);
+
+  const Triple &TargetTriple = TheDwarfEmitter->getTargetTriple();
+
+  // Emit .debug_str and .debug_line_str sections.
+  TG.spawn([&]() { emitStringSections(); });
+
+  if (llvm::is_contained(GlobalData.Options.AccelTables,
+                         AccelTableKind::Apple)) {
+    // Emit apple accelerator sections.
+    TG.spawn([&]() { emitAppleAcceleratorSections(TargetTriple); });
+  }
+
+  if (llvm::is_contained(GlobalData.Options.AccelTables,
+                         AccelTableKind::DebugNames)) {
+    // Emit .debug_names section.
+    TG.spawn([&]() { emitDWARFv5DebugNamesSection(TargetTriple); });
+  }
+
+  // Write compile units to the output file.
+  TG.spawn([&]() { writeCompileUnitsToTheOutput(); });
+}
+
+void DWARFLinkerImpl::emitStringSections() {
+  uint64_t DebugStrNextOffset = 0;
+  uint64_t DebugLineStrNextOffset = 0;
+
+  // Emit zero length string. Accelerator tables does not work correctly
+  // if the first string is not zero length string.
+  CommonSections.getSectionDescriptor(DebugSectionKind::DebugStr)
+      .emitInplaceString("");
+  DebugStrNextOffset++;
+
+  forEachOutputString(
+      [&](StringDestinationKind Kind, const StringEntry *String) {
+        switch (Kind) {
+        case StringDestinationKind::DebugStr: {
+          DwarfStringPoolEntryWithExtString *StringToEmit =
+              DebugStrStrings.getExistingEntry(String);
+          assert(StringToEmit->isIndexed());
+
+          // Strings may be repeated. Use accumulated DebugStrNextOffset
+          // to understand whether corresponding string is already emitted.
+          // Skip string if its offset less than accumulated offset.
+          if (StringToEmit->Offset >= DebugStrNextOffset) {
+            DebugStrNextOffset =
+                StringToEmit->Offset + StringToEmit->String.size() + 1;
+            // Emit the string itself.
+            CommonSections.getSectionDescriptor(DebugSectionKind::DebugStr)
+                .emitInplaceString(StringToEmit->String);
+          }
+        } break;
+        case StringDestinationKind::DebugLineStr: {
+          DwarfStringPoolEntryWithExtString *StringToEmit =
+              DebugLineStrStrings.getExistingEntry(String);
+          assert(StringToEmit->isIndexed());
+
+          // Strings may be repeated. Use accumulated DebugLineStrStrings
+          // to understand whether corresponding string is already emitted.
+          // Skip string if its offset less than accumulated offset.
+          if (StringToEmit->Offset >= DebugLineStrNextOffset) {
+            DebugLineStrNextOffset =
+                StringToEmit->Offset + StringToEmit->String.size() + 1;
+            // Emit the string itself.
+            CommonSections.getSectionDescriptor(DebugSectionKind::DebugLineStr)
+                .emitInplaceString(StringToEmit->String);
+          }
+        } break;
+        }
       });
+}
+
+void DWARFLinkerImpl::emitAppleAcceleratorSections(const Triple &TargetTriple) {
+  AccelTable<AppleAccelTableStaticOffsetData> AppleNamespaces;
+  AccelTable<AppleAccelTableStaticOffsetData> AppleNames;
+  AccelTable<AppleAccelTableStaticOffsetData> AppleObjC;
+  AccelTable<AppleAccelTableStaticTypeData> AppleTypes;
+
+  forEachCompileUnit([&](CompileUnit *CU) {
+    CU->AcceleratorRecords.forEach([&](const DwarfUnit::AccelInfo &Info) {
+      switch (Info.Type) {
+      case DwarfUnit::AccelType::None: {
+        llvm_unreachable("Unknown accelerator record");
+      } break;
+      case DwarfUnit::AccelType::Namespace: {
+        AppleNamespaces.addName(
+            *DebugStrStrings.getExistingEntry(Info.String),
+            CU->getSectionDescriptor(DebugSectionKind::DebugInfo).StartOffset +
+                Info.OutOffset);
+      } break;
+      case DwarfUnit::AccelType::Name: {
+        AppleNames.addName(
+            *DebugStrStrings.getExistingEntry(Info.String),
+            CU->getSectionDescriptor(DebugSectionKind::DebugInfo).StartOffset +
+                Info.OutOffset);
+      } break;
+      case DwarfUnit::AccelType::ObjC: {
+        AppleObjC.addName(
+            *DebugStrStrings.getExistingEntry(Info.String),
+            CU->getSectionDescriptor(DebugSectionKind::DebugInfo).StartOffset +
+                Info.OutOffset);
+      } break;
+      case DwarfUnit::AccelType::Type: {
+        AppleTypes.addName(
+            *DebugStrStrings.getExistingEntry(Info.String),
+            CU->getSectionDescriptor(DebugSectionKind::DebugInfo).StartOffset +
+                Info.OutOffset,
+            Info.Tag,
+            Info.ObjcClassImplementation ? dwarf::DW_FLAG_type_implementation
+                                         : 0,
+            Info.QualifiedNameHash);
+      } break;
+      }
     });
   });
 
-  // Emit .debug_line_str section.
-  TG.spawn([&]() {
-    uint64_t DebugLineStrNextOffset = 0;
+  {
+    // FIXME: we use AsmPrinter to emit accelerator sections.
+    // It might be beneficial to directly emit accelerator data
+    // to the raw_svector_ostream.
+    SectionDescriptor &OutSection =
+        CommonSections.getSectionDescriptor(DebugSectionKind::AppleNamespaces);
+    DwarfEmitterImpl Emitter(DWARFLinker::OutputFileType::Object,
+                             OutSection.OS);
+    if (Error Err = Emitter.init(TargetTriple, "__DWARF")) {
+      consumeError(std::move(Err));
+      return;
+    }
+
+    // Emit table.
+    Emitter.emitAppleNamespaces(AppleNamespaces);
+    Emitter.finish();
 
-    forEachObjectSectionsSet([&](OutputSections &Sections) {
-      Sections.forEach([&](SectionDescriptor &Section) {
-        emitStringsImpl(Section.ListDebugLineStrPatch, DebugLineStrStrings,
-                        DebugLineStrNextOffset, OutDebugLineStrSection);
-      });
+    // Set start offset and size for output section.
+    OutSection.setSizesForSectionCreatedByAsmPrinter();
+  }
+
+  {
+    // FIXME: we use AsmPrinter to emit accelerator sections.
+    // It might be beneficial to directly emit accelerator data
+    // to the raw_svector_ostream.
+    SectionDescriptor &OutSection =
+        CommonSections.getSectionDescriptor(DebugSectionKind::AppleNames);
+    DwarfEmitterImpl Emitter(DWARFLinker::OutputFileType::Object,
+                             OutSection.OS);
+    if (Error Err = Emitter.init(TargetTriple, "__DWARF")) {
+      consumeError(std::move(Err));
+      return;
+    }
+
+    // Emit table.
+    Emitter.emitAppleNames(AppleNames);
+    Emitter.finish();
+
+    // Set start offset ans size for output section.
+    OutSection.setSizesForSectionCreatedByAsmPrinter();
+  }
+
+  {
+    // FIXME: we use AsmPrinter to emit accelerator sections.
+    // It might be beneficial to directly emit accelerator data
+    // to the raw_svector_ostream.
+    SectionDescriptor &OutSection =
+        CommonSections.getSectionDescriptor(DebugSectionKind::AppleObjC);
+    DwarfEmitterImpl Emitter(DWARFLinker::OutputFileType::Object,
+                             OutSection.OS);
+    if (Error Err = Emitter.init(TargetTriple, "__DWARF")) {
+      consumeError(std::move(Err));
+      return;
+    }
+
+    // Emit table.
+    Emitter.emitAppleObjc(AppleObjC);
+    Emitter.finish();
+
+    // Set start offset ans size for output section.
+    OutSection.setSizesForSectionCreatedByAsmPrinter();
+  }
+
+  {
+    // FIXME: we use AsmPrinter to emit accelerator sections.
+    // It might be beneficial to directly emit accelerator data
+    // to the raw_svector_ostream.
+    SectionDescriptor &OutSection =
+        CommonSections.getSectionDescriptor(DebugSectionKind::AppleTypes);
+    DwarfEmitterImpl Emitter(DWARFLinker::OutputFileType::Object,
+                             OutSection.OS);
+    if (Error Err = Emitter.init(TargetTriple, "__DWARF")) {
+      consumeError(std::move(Err));
+      return;
+    }
+
+    // Emit table.
+    Emitter.emitAppleTypes(AppleTypes);
+    Emitter.finish();
+
+    // Set start offset ans size for output section.
+    OutSection.setSizesForSectionCreatedByAsmPrinter();
+  }
+}
+
+void DWARFLinkerImpl::emitDWARFv5DebugNamesSection(const Triple &TargetTriple) {
+  std::unique_ptr<AccelTable<DWARF5AccelTableStaticData>> DebugNames;
+
+  DebugNamesUnitsOffsets CompUnits;
+  CompUnitIDToIdx CUidToIdx;
+
+  unsigned Id = 0;
+
+  forEachCompileUnit([&](CompileUnit *CU) {
+    CompUnits.push_back(
+        CU->getOrCreateSectionDescriptor(DebugSectionKind::DebugInfo)
+            .StartOffset);
+    CUidToIdx[CU->getUniqueID()] = Id++;
+
+    CU->AcceleratorRecords.forEach([&](const DwarfUnit::AccelInfo &Info) {
+      if (DebugNames.get() == nullptr)
+        DebugNames = std::make_unique<AccelTable<DWARF5AccelTableStaticData>>();
+
+      switch (Info.Type) {
+      case DwarfUnit::AccelType::Name:
+      case DwarfUnit::AccelType::Namespace:
+      case DwarfUnit::AccelType::Type: {
+        DebugNames->addName(*DebugStrStrings.getExistingEntry(Info.String),
+                            Info.OutOffset, Info.Tag, CU->getUniqueID());
+      } break;
+
+      default:
+        break; // Nothing to do.
+      };
     });
   });
+
+  if (DebugNames.get() != nullptr) {
+    // FIXME: we use AsmPrinter to emit accelerator sections.
+    // It might be beneficial to directly emit accelerator data
+    // to the raw_svector_ostream.
+    SectionDescriptor &OutSection =
+        CommonSections.getSectionDescriptor(DebugSectionKind::DebugNames);
+    DwarfEmitterImpl Emitter(DWARFLinker::OutputFileType::Object,
+                             OutSection.OS);
+    if (Error Err = Emitter.init(TargetTriple, "__DWARF")) {
+      consumeError(std::move(Err));
+      return;
+    }
+
+    // Emit table.
+    Emitter.emitDebugNames(*DebugNames, CompUnits, CUidToIdx);
+    Emitter.finish();
+
+    // Set start offset ans size for output section.
+    OutSection.setSizesForSectionCreatedByAsmPrinter();
+  }
 }
 
-void DWARFLinkerImpl::cleanupDataAfterOutputSectionsAreGenerated() {
+void DWARFLinkerImpl::cleanupDataAfterDWARFOutputIsWritten() {
   GlobalData.getStringPool().clear();
   DebugStrStrings.clear();
   DebugLineStrStrings.clear();
 }
 
-void DWARFLinkerImpl::writeDWARFToTheOutput() {
+void DWARFLinkerImpl::writeCompileUnitsToTheOutput() {
   bool HasAbbreviations = false;
 
+  // Enumerate all sections and store them into the final emitter.
   forEachObjectSectionsSet([&](OutputSections &Sections) {
     Sections.forEach([&](SectionDescriptor &OutSection) {
       if (!HasAbbreviations && !OutSection.getContents().empty() &&
@@ -1071,21 +1306,23 @@
       // Emit section content.
       TheDwarfEmitter->emitSectionContents(OutSection.getContents(),
                                            OutSection.getName());
-      OutSection.erase();
+      OutSection.clearSectionContent();
     });
   });
 
+  if (!HasAbbreviations) {
+    const SmallVector<std::unique_ptr<DIEAbbrev>> Abbreviations;
+    TheDwarfEmitter->emitAbbrevs(Abbreviations, 3);
+  }
+}
+
+void DWARFLinkerImpl::writeCommonSectionsToTheOutput() {
   CommonSections.forEach([&](SectionDescriptor &OutSection) {
     // Emit section content.
     TheDwarfEmitter->emitSectionContents(OutSection.getContents(),
                                          OutSection.getName());
-    OutSection.erase();
+    OutSection.clearSectionContent();
   });
-
-  if (!HasAbbreviations) {
-    const SmallVector<std::unique_ptr<DIEAbbrev>> Abbreviations;
-    TheDwarfEmitter->emitAbbrevs(Abbreviations, 3);
-  }
 }
 
 } // end of namespace dwarflinker_parallel
diff --git a/llvm/lib/DWARFLinkerParallel/DWARFLinkerUnit.h b/llvm/lib/DWARFLinkerParallel/DWARFLinkerUnit.h
--- a/llvm/lib/DWARFLinkerParallel/DWARFLinkerUnit.h
+++ b/llvm/lib/DWARFLinkerParallel/DWARFLinkerUnit.h
@@ -31,7 +31,9 @@
   DwarfUnit(LinkingGlobalData &GlobalData, unsigned ID,
             StringRef ClangModuleName)
       : OutputSections(GlobalData), ID(ID), ClangModuleName(ClangModuleName),
-        OutUnitDIE(nullptr) {}
+        OutUnitDIE(nullptr) {
+    AcceleratorRecords.setAllocator(&GlobalData.getAllocator());
+  }
 
   /// Unique id of the unit.
   unsigned getUniqueID() const { return ID; }
@@ -39,9 +41,6 @@
   /// Return language of this unit.
   uint16_t getLanguage() const { return Language; }
 
-  /// Set size of this(newly generated) compile unit.
-  void setUnitSize(uint64_t UnitSize) { this->UnitSize = UnitSize; }
-
   /// Returns size of this(newly generated) compile unit.
   uint64_t getUnitSize() const { return UnitSize; }
 
@@ -79,7 +78,12 @@
   DIE *getOutUnitDIE() { return OutUnitDIE; }
 
   /// Set output unit DIE.
-  void setOutUnitDIE(DIE *UnitDie) { OutUnitDIE = UnitDie; }
+  void setOutUnitDIE(DIE *UnitDie) {
+    OutUnitDIE = UnitDie;
+
+    if (OutUnitDIE != nullptr)
+      UnitSize = getDebugInfoHeaderSize() + OutUnitDIE->getSize();
+  }
 
   /// \defgroup Methods used to emit unit's debug info:
   ///
@@ -95,18 +99,30 @@
                       const DWARFDebugLine::LineTable &OutLineTable);
   /// @}
 
+  /// \defgroup Methods used for reporting warnings and errors:
+  ///
+  /// @{
+  void warn(const Twine &Warning) { GlobalData.warn(Warning, getUnitName()); }
+
+  void error(const Twine &Err) { GlobalData.warn(Err, getUnitName()); }
+  /// @}
+
+  /// \defgroup Methods and data members used for building accelerator tables:
+  ///
+  /// @{
+
+  enum class AccelType : uint8_t { None, Name, Namespace, ObjC, Type };
+
   /// This structure keeps fields which would be used for creating accelerator
   /// table.
   struct AccelInfo {
-    AccelInfo(StringEntry *Name, const DIE *Die, bool SkipPubSection = false);
-    AccelInfo(StringEntry *Name, const DIE *Die, uint32_t QualifiedNameHash,
-              bool ObjCClassIsImplementation);
+    AccelInfo() {
+      AvoidForPubSections = false;
+      ObjcClassImplementation = false;
+    }
 
     /// Name of the entry.
-    StringEntry *Name = nullptr;
-
-    /// Tag of the DIE this entry describes.
-    dwarf::Tag Tag = dwarf::DW_TAG_null;
+    StringEntry *String = nullptr;
 
     /// Output offset of the DIE this entry describes.
     uint64_t OutOffset = 0;
@@ -114,22 +130,75 @@
     /// Hash of the fully qualified name.
     uint32_t QualifiedNameHash = 0;
 
-    /// Emit this entry only in the apple_* sections.
-    bool SkipPubSection = false;
+    /// Tag of the DIE this entry describes.
+    dwarf::Tag Tag = dwarf::DW_TAG_null;
+
+    /// Type of this accelerator record.
+    AccelType Type = AccelType::None;
 
-    /// Is this an ObjC class implementation?
-    bool ObjcClassImplementation = false;
+    /// Avoid using this entry for pub sections.
+    bool AvoidForPubSections : 1;
 
-    /// Cloned Die containing acceleration info.
-    const DIE *Die = nullptr;
+    /// Is this an ObjC class implementation?
+    bool ObjcClassImplementation : 1;
   };
 
-  /// \defgroup Methods used for reporting warnings and errors:
-  ///
-  /// @{
-  void warn(const Twine &Warning) { GlobalData.warn(Warning, getUnitName()); }
+  void rememberNameForAccelerators(StringEntry *Name, uint64_t OutOffset,
+                                   dwarf::Tag Tag, bool AvoidForPubSections) {
+    AccelInfo Info;
+
+    Info.Type = AccelType::Name;
+    Info.String = Name;
+    Info.OutOffset = OutOffset;
+    Info.Tag = Tag;
+    Info.AvoidForPubSections = AvoidForPubSections;
+
+    AcceleratorRecords.add(Info);
+  }
+  void rememberNamespaceForAccelerators(StringEntry *Name, uint64_t OutOffset,
+                                        dwarf::Tag Tag) {
+    AccelInfo Info;
+
+    Info.Type = AccelType::Namespace;
+    Info.String = Name;
+    Info.OutOffset = OutOffset;
+    Info.Tag = Tag;
+
+    AcceleratorRecords.add(Info);
+  }
+  void rememberObjCNameForAccelerators(StringEntry *Name, uint64_t OutOffset,
+                                       dwarf::Tag Tag) {
+    AccelInfo Info;
+
+    Info.Type = AccelType::ObjC;
+    Info.String = Name;
+    Info.OutOffset = OutOffset;
+    Info.Tag = Tag;
+    Info.AvoidForPubSections = true;
+
+    AcceleratorRecords.add(Info);
+  }
+  void rememberTypeForAccelerators(StringEntry *Name, uint64_t OutOffset,
+                                   dwarf::Tag Tag, uint32_t QualifiedNameHash,
+                                   bool ObjcClassImplementation) {
+    AccelInfo Info;
+
+    Info.Type = AccelType::Type;
+    Info.String = Name;
+    Info.OutOffset = OutOffset;
+    Info.Tag = Tag;
+    Info.QualifiedNameHash = QualifiedNameHash;
+    Info.ObjcClassImplementation = ObjcClassImplementation;
+
+    AcceleratorRecords.add(Info);
+  }
+
+  /// Emit .debug_pubnames and .debug_pubtypes for \p Unit.
+  void emitPubAccelerators();
+
+  /// Accelerator tables data.
+  ArrayList<AccelInfo> AcceleratorRecords;
 
-  void error(const Twine &Err) { GlobalData.warn(Err, getUnitName()); }
   /// @}
 
 protected:
@@ -137,6 +206,12 @@
   void emitDwarfAbbrevEntry(const DIEAbbrev &Abbrev,
                             SectionDescriptor &AbbrevSection);
 
+  /// Emit single pubnames/pubtypes accelerator entry.
+  std::optional<uint64_t>
+  emitPubAcceleratorEntry(SectionDescriptor &OutSection,
+                          DwarfUnit::AccelInfo &Info,
+                          std::optional<uint64_t> LengthOffset);
+
   /// Unique ID for the unit.
   unsigned ID = 0;
 
diff --git a/llvm/lib/DWARFLinkerParallel/DWARFLinkerUnit.cpp b/llvm/lib/DWARFLinkerParallel/DWARFLinkerUnit.cpp
--- a/llvm/lib/DWARFLinkerParallel/DWARFLinkerUnit.cpp
+++ b/llvm/lib/DWARFLinkerParallel/DWARFLinkerUnit.cpp
@@ -126,5 +126,83 @@
   return DebugLineEmitter.emit(OutLineTable);
 }
 
+/// Emit the pubnames or pubtypes section contribution for \p
+/// Unit into \p Sec. The data is provided in \p Info.
+std::optional<uint64_t>
+DwarfUnit::emitPubAcceleratorEntry(SectionDescriptor &OutSection,
+                                   DwarfUnit::AccelInfo &Info,
+                                   std::optional<uint64_t> LengthOffset) {
+  if (!LengthOffset) {
+    // Emit the header.
+    OutSection.emitIntVal(0xBADDEF,
+                          getFormParams().getDwarfOffsetByteSize()); // Length
+    LengthOffset = OutSection.OS.tell();
+
+    OutSection.emitIntVal(dwarf::DW_PUBNAMES_VERSION, 2); // Version
+
+    OutSection.notePatch(DebugOffsetPatch{
+        OutSection.OS.tell(),
+        &getOrCreateSectionDescriptor(DebugSectionKind::DebugInfo)});
+    OutSection.emitOffset(0xBADDEF); // Unit offset
+
+    OutSection.emitIntVal(getUnitSize(), 4); // Size
+  }
+  OutSection.emitOffset(Info.OutOffset);
+
+  // Emit the string itself.
+  OutSection.emitInplaceString(Info.String->first());
+
+  return LengthOffset;
+}
+
+/// Emit .debug_pubnames and .debug_pubtypes for \p Unit.
+void DwarfUnit::emitPubAccelerators() {
+  std::optional<uint64_t> NamesLengthOffset;
+  std::optional<uint64_t> TypesLengthOffset;
+
+  AcceleratorRecords.forEach([&](DwarfUnit::AccelInfo &Info) {
+    if (Info.AvoidForPubSections)
+      return;
+
+    switch (Info.Type) {
+    case DwarfUnit::AccelType::Name: {
+      NamesLengthOffset = emitPubAcceleratorEntry(
+          getOrCreateSectionDescriptor(DebugSectionKind::DebugPubNames), Info,
+          NamesLengthOffset);
+    } break;
+    case DwarfUnit::AccelType::Type: {
+      TypesLengthOffset = emitPubAcceleratorEntry(
+          getOrCreateSectionDescriptor(DebugSectionKind::DebugPubTypes), Info,
+          TypesLengthOffset);
+    } break;
+    default: {
+      // Nothing to do.
+    } break;
+    }
+  });
+
+  if (NamesLengthOffset) {
+    SectionDescriptor &OutSection =
+        getOrCreateSectionDescriptor(DebugSectionKind::DebugPubNames);
+    OutSection.emitIntVal(0, 4); // End marker.
+
+    OutSection.apply(*NamesLengthOffset -
+                         OutSection.getFormParams().getDwarfOffsetByteSize(),
+                     dwarf::DW_FORM_sec_offset,
+                     OutSection.OS.tell() - *NamesLengthOffset);
+  }
+
+  if (TypesLengthOffset) {
+    SectionDescriptor &OutSection =
+        getOrCreateSectionDescriptor(DebugSectionKind::DebugPubTypes);
+    OutSection.emitIntVal(0, 4); // End marker.
+
+    OutSection.apply(*TypesLengthOffset -
+                         OutSection.getFormParams().getDwarfOffsetByteSize(),
+                     dwarf::DW_FORM_sec_offset,
+                     OutSection.OS.tell() - *TypesLengthOffset);
+  }
+}
+
 } // end of namespace dwarflinker_parallel
 } // end of namespace llvm
diff --git a/llvm/lib/DWARFLinkerParallel/DependencyTracker.cpp b/llvm/lib/DWARFLinkerParallel/DependencyTracker.cpp
--- a/llvm/lib/DWARFLinkerParallel/DependencyTracker.cpp
+++ b/llvm/lib/DWARFLinkerParallel/DependencyTracker.cpp
@@ -221,53 +221,28 @@
 
     // Resolve reference.
     std::optional<std::pair<CompileUnit *, uint32_t>> RefDie =
-        CU.resolveDIEReference(Val);
+        CU.resolveDIEReference(
+            Val, Context.InterCUProcessingStarted
+                     ? ResolveInterCUReferencesMode::Resolve
+                     : ResolveInterCUReferencesMode::AvoidResolving);
     if (!RefDie) {
       CU.warn("cann't find referenced DIE", Entry);
       continue;
     }
 
-    if (CU.getUniqueID() == RefDie->first->getUniqueID()) {
-      // Check if referenced DIE entry is already kept.
-      if (RefDie->first->getDIEInfo(RefDie->second).getKeep())
-        continue;
-
-      // If referenced DIE is inside current compilation unit.
-      const DWARFDebugInfoEntry *RefEntry =
-          RefDie->first->getDebugInfoEntry(RefDie->second);
-
-      if (RootItem.RootEntry->getTag() == dwarf::DW_TAG_compile_unit)
-        addItemToWorklist(*RefDie->first, RefEntry);
-      else {
-        uint64_t RootStartOffset = RootItem.RootEntry->getOffset();
-        uint64_t RootEndOffset;
-        if (std::optional<uint32_t> SiblingIdx =
-                RootItem.RootEntry->getSiblingIdx()) {
-          RootEndOffset =
-              RootItem.CU.getDebugInfoEntry(*SiblingIdx)->getOffset();
-        } else {
-          RootEndOffset = RootItem.CU.getOrigUnit().getNextUnitOffset();
-        }
-
-        // Do not put item in work list if it is an ancestor of RootItem.
-        // (since we will visit and mark it as kept during normal traversing of
-        // RootItem children)
-        if (RootStartOffset > RefEntry->getOffset() ||
-            RefEntry->getOffset() >= RootEndOffset)
-          addItemToWorklist(*RefDie->first, RefEntry);
-      }
-    } else if (Context.InterCUProcessingStarted && RefDie->second != 0) {
-      // If referenced DIE is in other compilation unit and
-      // it is safe to navigate other units DIEs.
-      addItemToWorklist(*RefDie->first,
-                        RefDie->first->getDebugInfoEntry(RefDie->second));
-    } else {
+    if (RefDie->second == 0) {
       // Delay resolving reference.
       RefDie->first->setInterconnectedCU();
       CU.setInterconnectedCU();
       Context.HasNewInterconnectedCUs = true;
       return false;
     }
+
+    assert(CU.getUniqueID() == RefDie->first->getUniqueID() ||
+           Context.InterCUProcessingStarted);
+
+    addItemToWorklist(*RefDie->first,
+                      RefDie->first->getDebugInfoEntry(RefDie->second));
   }
 
   return true;
diff --git a/llvm/lib/DWARFLinkerParallel/OutputSections.h b/llvm/lib/DWARFLinkerParallel/OutputSections.h
--- a/llvm/lib/DWARFLinkerParallel/OutputSections.h
+++ b/llvm/lib/DWARFLinkerParallel/OutputSections.h
@@ -21,6 +21,7 @@
 #include "llvm/Object/ObjectFile.h"
 #include "llvm/Support/Endian.h"
 #include "llvm/Support/Error.h"
+#include "llvm/Support/FormatVariadic.h"
 #include "llvm/Support/LEB128.h"
 #include "llvm/Support/MemoryBufferRef.h"
 #include "llvm/Support/raw_ostream.h"
@@ -47,6 +48,13 @@
   DebugStr,
   DebugLineStr,
   DebugStrOffsets,
+  DebugPubNames,
+  DebugPubTypes,
+  DebugNames,
+  AppleNames,
+  AppleNamespaces,
+  AppleObjC,
+  AppleTypes,
   NumberOfEnumEntries // must be last
 };
 constexpr static size_t SectionKindsNum =
@@ -143,8 +151,11 @@
     ListDebugOffsetPatch.setAllocator(&GlobalData.getAllocator());
   }
 
-  /// Erase whole section contents(data bits, list of patches, format).
-  void erase();
+  /// Erase whole section contents(data bits, list of patches).
+  void clearAllSectionData();
+
+  /// Erase only section output data bits.
+  void clearSectionContent();
 
   /// When objects(f.e. compile units) are glued into the single file,
   /// the debug sections corresponding to the concrete object are assigned
@@ -157,7 +168,7 @@
 
   /// Section patches.
 #define ADD_PATCHES_LIST(T)                                                    \
-  T &notePatch(const T &Patch) { return List##T.noteItem(Patch); }             \
+  T &notePatch(const T &Patch) { return List##T.add(Patch); }                  \
   ArrayList<T> List##T;
 
   ADD_PATCHES_LIST(DebugStrPatch)
@@ -216,7 +227,7 @@
 
   /// Emit specified inplace string value into the current section contents.
   void emitInplaceString(StringRef String) {
-    OS << String;
+    OS << GlobalData.translateString(String);
     emitIntVal(0, 1);
   }
 
@@ -295,10 +306,42 @@
   }
 
   /// Returns descriptor for the specified section of \p SectionKind.
-  std::optional<const SectionDescriptor *>
+  /// The descriptor should already be created. The llvm_unreachable
+  /// would be raised if it is not.
+  const SectionDescriptor &
   getSectionDescriptor(DebugSectionKind SectionKind) const {
     SectionsSetTy::const_iterator It = SectionDescriptors.find(SectionKind);
 
+    if (It == SectionDescriptors.end())
+      llvm_unreachable(
+          formatv("Section {0} does not exist", getSectionName(SectionKind))
+              .str()
+              .c_str());
+
+    return It->second;
+  }
+
+  /// Returns descriptor for the specified section of \p SectionKind.
+  /// The descriptor should already be created. The llvm_unreachable
+  /// would be raised if it is not.
+  SectionDescriptor &getSectionDescriptor(DebugSectionKind SectionKind) {
+    SectionsSetTy::iterator It = SectionDescriptors.find(SectionKind);
+
+    if (It == SectionDescriptors.end())
+      llvm_unreachable(
+          formatv("Section {0} does not exist", getSectionName(SectionKind))
+              .str()
+              .c_str());
+
+    return It->second;
+  }
+
+  /// Returns descriptor for the specified section of \p SectionKind.
+  /// Returns std::nullopt if section descriptor is not created yet.
+  std::optional<const SectionDescriptor *>
+  tryGetSectionDescriptor(DebugSectionKind SectionKind) const {
+    SectionsSetTy::const_iterator It = SectionDescriptors.find(SectionKind);
+
     if (It == SectionDescriptors.end())
       return std::nullopt;
 
@@ -306,8 +349,9 @@
   }
 
   /// Returns descriptor for the specified section of \p SectionKind.
+  /// Returns std::nullopt if section descriptor is not created yet.
   std::optional<SectionDescriptor *>
-  getSectionDescriptor(DebugSectionKind SectionKind) {
+  tryGetSectionDescriptor(DebugSectionKind SectionKind) {
     SectionsSetTy::iterator It = SectionDescriptors.find(SectionKind);
 
     if (It == SectionDescriptors.end())
@@ -317,7 +361,7 @@
   }
 
   /// Returns descriptor for the specified section of \p SectionKind.
-  /// If descriptor does not exist then create it.
+  /// If descriptor does not exist then creates it.
   SectionDescriptor &
   getOrCreateSectionDescriptor(DebugSectionKind SectionKind) {
     return SectionDescriptors
@@ -328,7 +372,7 @@
   /// Erases data of all sections.
   void eraseSections() {
     for (auto &Section : SectionDescriptors)
-      Section.second.erase();
+      Section.second.clearAllSectionData();
   }
 
   /// Enumerate all sections and call \p Handler for each.
diff --git a/llvm/lib/DWARFLinkerParallel/OutputSections.cpp b/llvm/lib/DWARFLinkerParallel/OutputSections.cpp
--- a/llvm/lib/DWARFLinkerParallel/OutputSections.cpp
+++ b/llvm/lib/DWARFLinkerParallel/OutputSections.cpp
@@ -14,10 +14,12 @@
 namespace dwarflinker_parallel {
 
 static constexpr StringLiteral SectionNames[SectionKindsNum] = {
-    "debug_info",     "debug_line",     "debug_frame",      "debug_ranges",
-    "debug_rnglists", "debug_loc",      "debug_loclists",   "debug_aranges",
-    "debug_abbrev",   "debug_macinfo",  "debug_macro",      "debug_addr",
-    "debug_str",      "debug_line_str", "debug_str_offsets"};
+    "debug_info",     "debug_line",     "debug_frame",       "debug_ranges",
+    "debug_rnglists", "debug_loc",      "debug_loclists",    "debug_aranges",
+    "debug_abbrev",   "debug_macinfo",  "debug_macro",       "debug_addr",
+    "debug_str",      "debug_line_str", "debug_str_offsets", "debug_pubnames",
+    "debug_pubtypes", "debug_names",    "apple_names",       "apple_namespac",
+    "apple_objc",     "apple_types"};
 
 const StringLiteral &getSectionName(DebugSectionKind SectionKind) {
   return SectionNames[static_cast<uint8_t>(SectionKind)];
@@ -56,6 +58,20 @@
             DebugSectionKind::DebugLineStr)
       .Case(getSectionName(DebugSectionKind::DebugStrOffsets),
             DebugSectionKind::DebugStrOffsets)
+      .Case(getSectionName(DebugSectionKind::DebugPubNames),
+            DebugSectionKind::DebugPubNames)
+      .Case(getSectionName(DebugSectionKind::DebugPubTypes),
+            DebugSectionKind::DebugPubTypes)
+      .Case(getSectionName(DebugSectionKind::DebugNames),
+            DebugSectionKind::DebugNames)
+      .Case(getSectionName(DebugSectionKind::AppleNames),
+            DebugSectionKind::AppleNames)
+      .Case(getSectionName(DebugSectionKind::AppleNamespaces),
+            DebugSectionKind::AppleNamespaces)
+      .Case(getSectionName(DebugSectionKind::AppleObjC),
+            DebugSectionKind::AppleObjC)
+      .Case(getSectionName(DebugSectionKind::AppleTypes),
+            DebugSectionKind::AppleTypes)
       .Default(std::nullopt);
 
   return std::nullopt;
@@ -76,9 +92,9 @@
       RefCU(RefCU, SrcCU->getUniqueID() == RefCU->getUniqueID()),
       RefDieIdxOrClonedOffset(RefIdx) {}
 
-void SectionDescriptor::erase() {
+void SectionDescriptor::clearAllSectionData() {
   StartOffset = 0;
-  Contents = OutSectionDataTy();
+  clearSectionContent();
   ListDebugStrPatch.erase();
   ListDebugLineStrPatch.erase();
   ListDebugRangePatch.erase();
@@ -88,6 +104,8 @@
   ListDebugOffsetPatch.erase();
 }
 
+void SectionDescriptor::clearSectionContent() { Contents = OutSectionDataTy(); }
+
 void SectionDescriptor::setSizesForSectionCreatedByAsmPrinter() {
   if (Contents.empty())
     return;
@@ -107,7 +125,6 @@
       consumeError(SectNameOrErr.takeError());
       continue;
     }
-
     if (std::optional<DebugSectionKind> SectKind =
             parseDebugTableName(*SectNameOrErr)) {
       if (*SectKind == SectionKind) {
@@ -160,7 +177,7 @@
 
   switch (StringForm) {
   case dwarf::DW_FORM_string: {
-    emitInplaceString(GlobalData.translateString(StringVal));
+    emitInplaceString(StringVal);
   } break;
   case dwarf::DW_FORM_strp: {
     notePatch(DebugStrPatch{
@@ -333,9 +350,9 @@
 
   std::optional<SectionDescriptor *> RangeSection;
   if (Format.Version >= 5)
-    RangeSection = getSectionDescriptor(DebugSectionKind::DebugRngLists);
+    RangeSection = tryGetSectionDescriptor(DebugSectionKind::DebugRngLists);
   else
-    RangeSection = getSectionDescriptor(DebugSectionKind::DebugRange);
+    RangeSection = tryGetSectionDescriptor(DebugSectionKind::DebugRange);
 
   if (RangeSection) {
     Section.ListDebugRangePatch.forEach([&](DebugRangePatch &Patch) {
@@ -349,9 +366,9 @@
 
   std::optional<SectionDescriptor *> LocationSection;
   if (Format.Version >= 5)
-    LocationSection = getSectionDescriptor(DebugSectionKind::DebugLocLists);
+    LocationSection = tryGetSectionDescriptor(DebugSectionKind::DebugLocLists);
   else
-    LocationSection = getSectionDescriptor(DebugSectionKind::DebugLoc);
+    LocationSection = tryGetSectionDescriptor(DebugSectionKind::DebugLoc);
 
   if (LocationSection) {
     Section.ListDebugLocPatch.forEach([&](DebugLocPatch &Patch) {
@@ -367,17 +384,14 @@
     uint64_t FinalOffset = Patch.RefDieIdxOrClonedOffset;
     dwarf::Form FinalForm = dwarf::DW_FORM_ref4;
 
+    // Check whether it is local or inter-CU reference.
     if (!Patch.RefCU.getInt()) {
-      std::optional<SectionDescriptor *> ReferencedSectionDescriptor =
+      SectionDescriptor &ReferencedSectionDescriptor =
           Patch.RefCU.getPointer()->getSectionDescriptor(
               DebugSectionKind::DebugInfo);
-      if (!ReferencedSectionDescriptor) {
-        // Referenced section should be already created at this point.
-        llvm_unreachable("Referenced section does not exist");
-      }
 
       FinalForm = dwarf::DW_FORM_ref_addr;
-      FinalOffset += (*ReferencedSectionDescriptor)->StartOffset;
+      FinalOffset += ReferencedSectionDescriptor.StartOffset;
     }
 
     Section.apply(Patch.PatchOffset, FinalForm, FinalOffset);
@@ -392,6 +406,8 @@
 
   Section.ListDebugOffsetPatch.forEach([&](DebugOffsetPatch &Patch) {
     uint64_t FinalValue = Patch.SectionPtr.getPointer()->StartOffset;
+
+    // Check whether we need to read value from the original location.
     if (Patch.SectionPtr.getInt())
       FinalValue +=
           Section.getIntVal(Patch.PatchOffset, Format.getDwarfOffsetByteSize());
diff --git a/llvm/test/tools/dsymutil/ARM/DWARFLinkerParallel/dwarf5-dwarf4-combination-macho.test b/llvm/test/tools/dsymutil/ARM/DWARFLinkerParallel/dwarf5-dwarf4-combination-macho.test
deleted file mode 100644
--- a/llvm/test/tools/dsymutil/ARM/DWARFLinkerParallel/dwarf5-dwarf4-combination-macho.test
+++ /dev/null
@@ -1,200 +0,0 @@
-; This test checks to ensure that if a DWARF v5 and DWARF v4 object file is used to
-; generate a dsym, dsymutil correctly outputs the debug information, by keeping
-; the DWARF v5 and DWARF v4 debug info distinct, and that all the section headers
-; have the correct format.
-
-; 1.o was produced with the source file:
-
-; a.cpp
-; __attribute__((section("1,__text_foo"))) void foo() {}
-;
-; int foo2(int a) {
-;     return a+5;
-; }
-; int main () {
-;     return 1;
-; }
-
-; clang -g -c -O1 a.cpp -Xclang -gdwarf-5 -o 1.o
-
-; 2.o was produced with the following source file:
-
-; b.cpp
-; __attribute__((section("1,__text_foo2"))) void foo2() {}
-;
-; int bar(int x) {
-;     int y = x + 2;
-;     return y;
-; }
-
-; clang -g -c -O1 b.cpp -gdwarf-4 -o 2.o
-
-
-RUN: rm -rf %t.dir && mkdir -p %t.dir
-RUN: dsymutil --linker llvm -y %p/../dummy-debug-map-amr64.map \
-RUN:   -oso-prepend-path=%p/../../Inputs/DWARF5-DWARF4-combination \
-RUN:   -o %t.dir/dwarf5-dwarf4-combination-macho.dSYM
-RUN: llvm-dwarfdump %t.dir/dwarf5-dwarf4-combination-macho.dSYM -a --verbose | FileCheck %s
-
-
-CHECK:.debug_abbrev contents:
-CHECK-NEXT: Abbrev table for offset: 0x00000000
-
-CHECK: .debug_info contents:
-CHECK: 0x00000000: Compile Unit: length = 0x0000004a, format = DWARF32, version = 0x0005, unit_type = DW_UT_compile, abbr_offset = 0x0000, addr_size = 0x08 
-CHECK: DW_AT_producer [DW_FORM_strx]     (indexed (00000000) string = "Apple clang version 14.0.3 (clang-1403.0.22.14.1)")
-CHECK: DW_AT_name [DW_FORM_strx] (indexed (00000001) string = "a.cpp")
-CHECK: DW_AT_LLVM_sysroot [DW_FORM_strx] (indexed (00000002) string = "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk")
-CHECK: DW_AT_APPLE_sdk [DW_FORM_strx]    (indexed (00000003) string = "MacOSX.sdk")
-CHECK: DW_AT_str_offsets_base [DW_FORM_sec_offset]       (0x00000008)
-CHECK: DW_AT_comp_dir [DW_FORM_strx]     (indexed (00000004) string = "/Users/shubham/Development/test109275485")
-CHECK: DW_AT_ranges [DW_FORM_sec_offset] (0x[[RANGELIST_OFFSET:[0-9a-f]+]]
-CHECK-NEXT:                  [0x[[RANGELIST_OFFSET_START:[0-9a-f]+]], 0x[[RANGELIST_OFFSET_END:[0-9a-f]+]]))
-CHECK-NEXT: DW_AT_addr_base [DW_FORM_sec_offset]      (0x00000008)
-CHECK: 0x0000002c:   DW_TAG_subprogram [2] * (0x0000000c)
-CHECK-NEXT:  DW_AT_low_pc [DW_FORM_addrx]     (indexed (00000000) address = 0x[[#%.16x,LOCLIST_LOWPC:]])
-CHECK: DW_AT_linkage_name [DW_FORM_strx]       (indexed (00000005) string = "_Z4foo2i")
-CHECK: DW_AT_name [DW_FORM_strx]       (indexed (00000006) string = "foo2")
-CHECK: 0x0000003c:     DW_TAG_formal_parameter [3]   (0x0000002c)
-CHECK-NEXT:                   DW_AT_location [DW_FORM_sec_offset]   (0x[[LOCLIST_OFFSET:[0-9a-f]+]]: 
-CHECK-NEXT:                      [0x[[#%.16x,LOCLIST_PAIR_START:]], 0x[[#%.16x,LOCLIST_PAIR_END:]]): [[LOCLIST_EXPR:.*]]
-CHECK-NEXT:                      [0x[[#%.16x,LOCLIST_PAIR_START2:]], 0x[[#%.16x,LOCLIST_PAIR_END2:]]): [[LOCLIST_EXPR2:.*]])
-CHECK: DW_AT_name [DW_FORM_strx]     (indexed (00000007) string = "a")
-
-CHECK: 0x0000004e: Compile Unit: length = 0x00000072, format = DWARF32, version = 0x0004, abbr_offset = 0x005a, addr_size = 0x08 
-CHECK: DW_AT_producer [DW_FORM_strp]     ( .debug_str[0x00000001] = "Apple clang version 14.0.3 (clang-1403.0.22.14.1)")
-CHECK: DW_AT_name [DW_FORM_strp] ( .debug_str[0x000000e0] = "b.cpp")
-CHECK: DW_AT_LLVM_sysroot [DW_FORM_strp] ( .debug_str[0x00000039] = "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk")
-CHECK: DW_AT_APPLE_sdk [DW_FORM_strp]    ( .debug_str[0x00000098] = "MacOSX.sdk")
-CHECK-NOT: DW_AT_str_offsets_base
-CHECK: DW_AT_comp_dir [DW_FORM_strp]     ( .debug_str[0x000000a3] = "/Users/shubham/Development/test109275485")
-CHECK:              DW_AT_low_pc [DW_FORM_addr]       (0x[[#%.16x,RANGE_LOWPC:]])
-CHECK-NEXT:              DW_AT_ranges [DW_FORM_sec_offset] (0x00000000
-CHECK-NEXT:                 [0x[[#%.16x,RANGE_START:]], 0x[[#%.16x,RANGE_END:]]))
-CHECK: 0x00000080:   DW_TAG_subprogram {{.*}} * (0x00000059)
-CHECK-NEXT:                DW_AT_low_pc [DW_FORM_addr]     (0x[[#%.16x,LOC_LOWPC:]])
-CHECK: DW_AT_linkage_name [DW_FORM_strp]       ( .debug_str[0x000000e6] = "_Z3bari")
-CHECK: DW_AT_name [DW_FORM_strp]       ( .debug_str[0x000000ee] = "bar")
-CHECK: 0x0000009d:     DW_TAG_formal_parameter {{.*}}   (0x00000080)
-CHECK-NEXT:                  DW_AT_location [DW_FORM_sec_offset]   (0x[[LOC_OFFSET:[0-9a-f]+]]: 
-CHECK-NEXT:                     [0x[[#%.16x,LOC_PAIR_START:]], 0x[[#%.16x,LOC_PAIR_END:]]): [[LOC_EXPR:.*]]
-CHECK-NEXT:                     [0x[[#%.16x,LOC_PAIR_START2:]], 0x[[#%.16x,LOC_PAIR_END2:]]): [[LOC_EXPR2:.*]])
-CHECK: DW_AT_name [DW_FORM_strp]     ( .debug_str[0x000000f2] = "x")
-
-CHECK: .debug_loc contents:
-CHECK-NEXT: 0x[[LOC_OFFSET]]:
-CHECK-NEXT:            (0x[[#sub(LOC_PAIR_START,LOC_LOWPC)]], 0x[[#sub(LOC_PAIR_END,LOC_LOWPC)]]): [[LOC_EXPR:.*]]
-CHECK-NEXT:            (0x[[#sub(LOC_PAIR_START2,LOC_LOWPC)]], 0x[[#sub(LOC_PAIR_END2,LOC_LOWPC)]]): [[LOC_EXPR2:.*]]
-
-CHECK: .debug_loclists contents:
-CHECK-NEXT: 0x00000000: locations list header: length = 0x00000018, format = DWARF32, version = 0x0005, addr_size = 0x08, seg_size = 0x00, offset_entry_count = 0x00000000
-CHECK-NEXT: 0x[[LOCLIST_OFFSET]]: 
-CHECK-NEXT:            DW_LLE_base_addressx   (0x0000000000000000)
-CHECK-NEXT:            DW_LLE_offset_pair     (0x[[#sub(LOCLIST_PAIR_START,LOCLIST_LOWPC)]], 0x[[#sub(LOCLIST_PAIR_END,LOCLIST_LOWPC)]])
-CHECK-NEXT:            DW_LLE_offset_pair     (0x[[#sub(LOCLIST_PAIR_START2,LOCLIST_LOWPC)]], 0x[[#sub(LOCLIST_PAIR_END2,LOCLIST_LOWPC)]])
-CHECK-NEXT:            DW_LLE_end_of_list     ()
-
-CHECK: .debug_line contents:
-CHECK-NEXT: debug_line[0x00000000]
-CHECK-NEXT: Line table prologue:
-CHECK-NEXT:     total_length: 0x00000048
-CHECK-NEXT:           format: DWARF32
-CHECK-NEXT:          version: 5
-CHECK-NEXT:     address_size: 8
-CHECK-NEXT:  seg_select_size: 0
-CHECK-NEXT:  prologue_length: 0x00000025
-CHECK-NEXT:  min_inst_length: 1
-CHECK-NEXT: max_ops_per_inst: 1
-CHECK-NEXT:  default_is_stmt: 1
-CHECK-NEXT:        line_base: -5
-CHECK-NEXT:       line_range: 14
-CHECK-NEXT:      opcode_base: 13
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_copy] = 0
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_advance_pc] = 1
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_advance_line] = 1
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_set_file] = 1
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_set_column] = 1
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_negate_stmt] = 0
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_set_basic_block] = 0
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_const_add_pc] = 0
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_fixed_advance_pc] = 1
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_set_prologue_end] = 0
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_set_epilogue_begin] = 0
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_set_isa] = 1
-CHECK-NEXT: include_directories[  0] =  .debug_line_str[0x00000000] = "/Users/shubham/Development/test109275485"
-CHECK-NEXT: file_names[  0]:
-CHECK-NEXT:            name:  .debug_line_str[0x00000029] = "a.cpp"
-CHECK-NEXT:       dir_index: 0
-
-CHECK: debug_line[0x0000004c]
-CHECK-NEXT: Line table prologue:
-CHECK-NEXT:     total_length: 0x0000003b
-CHECK-NEXT:           format: DWARF32
-CHECK-NEXT:          version: 4
-CHECK-NEXT:  prologue_length: 0x0000001d
-CHECK-NEXT:  min_inst_length: 1
-CHECK-NEXT: max_ops_per_inst: 1
-CHECK-NEXT:  default_is_stmt: 1
-CHECK-NEXT:        line_base: -5
-CHECK-NEXT:       line_range: 14
-CHECK-NEXT:      opcode_base: 13
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_copy] = 0
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_advance_pc] = 1
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_advance_line] = 1
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_set_file] = 1
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_set_column] = 1
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_negate_stmt] = 0
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_set_basic_block] = 0
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_const_add_pc] = 0
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_fixed_advance_pc] = 1
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_set_prologue_end] = 0
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_set_epilogue_begin] = 0
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_set_isa] = 1
-CHECK-NEXT: file_names[  1]:
-CHECK-NEXT:            name: "b.cpp"
-CHECK-NEXT:       dir_index: 0
-CHECK-NEXT:        mod_time: 0x00000000
-CHECK-NEXT:          length: 0x00000000
-
-CHECK: .debug_str contents:
-CHECK-NEXT: 0x00000000: ""
-CHECK-NEXT: 0x00000001: "Apple clang version 14.0.3 (clang-1403.0.22.14.1)"
-CHECK-NEXT: 0x00000033: "a.cpp"
-CHECK-NEXT: 0x00000039: "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk"
-CHECK-NEXT: 0x00000098: "MacOSX.sdk"
-CHECK-NEXT: 0x000000a3: "/Users/shubham/Development/test109275485"
-CHECK-NEXT: 0x000000cc: "_Z4foo2i"
-CHECK-NEXT: 0x000000d5: "foo2"
-CHECK-NEXT: 0x000000da: "a"
-CHECK-NEXT: 0x000000dc: "int"
-CHECK-NEXT: 0x000000e0: "b.cpp"
-CHECK-NEXT: 0x000000e6: "_Z3bari"
-CHECK-NEXT: 0x000000ee: "bar"
-CHECK-NEXT: 0x000000f2: "x"
-CHECK-NEXT: 0x000000f4: "y"
-
-CHECK: .debug_line_str contents:
-CHECK-NEXT: 0x00000000: "/Users/shubham/Development/test109275485"
-CHECK-NEXT: 0x00000029: "a.cpp"
-
-CHECK: .debug_ranges contents:
-CHECK-NEXT: 00000000 [[#sub(RANGE_START,RANGE_LOWPC)]] [[#sub(RANGE_END,RANGE_LOWPC)]]
-
-CHECK: .debug_rnglists contents:
-CHECK-NEXT: 0x00000000: range list header: length = 0x0000000e, format = DWARF32, version = 0x0005, addr_size = 0x08, seg_size = 0x00, offset_entry_count = 0x00000000
-CHECK-NEXT: ranges:
-CHECK-NEXT: [[RANGELIST_OFFSET]]: [DW_RLE_base_addressx]:  0x0000000000000000
-CHECK-NEXT: 0x0000000e: [DW_RLE_offset_pair  ]: {{.*}}[0x[[RANGELIST_OFFSET_START]], 0x[[RANGELIST_OFFSET_END]])
-CHECK-NEXT: 0x00000011: [DW_RLE_end_of_list  ]
-
-CHECK: .debug_str_offsets contents:
-CHECK-NEXT: 0x00000000: Contribution size = 40, Format = DWARF32, Version = 5
-CHECK-NEXT: 0x00000008: 00000001 "Apple clang version 14.0.3 (clang-1403.0.22.14.1)"
-CHECK-NEXT: 0x0000000c: 00000033 "a.cpp"
-CHECK-NEXT: 0x00000010: 00000039 "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk"
-CHECK-NEXT: 0x00000014: 00000098 "MacOSX.sdk"
-CHECK-NEXT: 0x00000018: 000000a3 "/Users/shubham/Development/test109275485"
-CHECK-NEXT: 0x0000001c: 000000cc "_Z4foo2i"
-CHECK-NEXT: 0x00000020: 000000d5 "foo2"
-CHECK-NEXT: 0x00000024: 000000da "a"
-CHECK-NEXT: 0x00000028: 000000dc "int"
diff --git a/llvm/test/tools/dsymutil/ARM/DWARFLinkerParallel/dwarf5-macho.test b/llvm/test/tools/dsymutil/ARM/DWARFLinkerParallel/dwarf5-macho.test
deleted file mode 100644
--- a/llvm/test/tools/dsymutil/ARM/DWARFLinkerParallel/dwarf5-macho.test
+++ /dev/null
@@ -1,92 +0,0 @@
-; This test checks to that DWARF v5 debug info can be correctly linked
-; into a dSYM bundle by dsymutil, with the correct section names and DWARF v5
-; headers for the different sections.
-
-; 1.o was produced with the source file:
-
-; a.cpp
-; __attribute__((section("1,__text_foo"))) void foo() {}
-;
-; int foo2(int a) {
-;     return a+5;
-; }
-; int main () {
-;     return 1;
-; }
-
-; clang -g -c -O1 a.cpp -Xclang -gdwarf-5 -o 1.o
-
-
-RUN: rm -rf %t.dir && mkdir -p %t.dir
-RUN: dsymutil --linker llvm -y %p/../dummy-debug-map-amr64.map \
-RUN:   -oso-prepend-path=%p/../../Inputs/DWARF5 -o %t.dir/dwarf5-macho.dSYM
-RUN: llvm-dwarfdump %t.dir/dwarf5-macho.dSYM -a --verbose | FileCheck %s
-
-CHECK:.debug_abbrev contents:
-CHECK-NEXT: Abbrev table for offset: 0x00000000
-
-CHECK: .debug_info contents:
-CHECK-NEXT: Compile Unit: length = 0x0000004a, format = DWARF32, version = 0x0005, unit_type = DW_UT_compile, abbr_offset = 0x0000, addr_size = 0x08 
-CHECK: DW_AT_ranges [DW_FORM_sec_offset] (0x[[RANGELIST_OFFSET:[0-9a-f]+]]
-CHECK-NEXT:                  [0x[[RANGELIST_OFFSET_START:[0-9a-f]+]], 0x[[RANGELIST_OFFSET_END:[0-9a-f]+]]))
-CHECK-NEXT: DW_AT_addr_base [DW_FORM_sec_offset]      (0x00000008)
-CHECK: 0x0000002c:   DW_TAG_subprogram [2] * (0x0000000c)
-CHECK-NEXT:  DW_AT_low_pc [DW_FORM_addrx]     (indexed (00000000) address = 0x[[#%.16x,LOCLIST_LOWPC:]])
-CHECK: 0x0000003c:     DW_TAG_formal_parameter [3]   (0x0000002c)
-CHECK-NEXT:                   DW_AT_location [DW_FORM_sec_offset]   (0x[[LOC_OFFSET:[0-9a-f]+]]: 
-CHECK-NEXT:                      [0x[[#%.16x,LOCLIST_PAIR_START:]], 0x[[#%.16x,LOCLIST_PAIR_END:]]): [[LOCLIST_EXPR:.*]]
-CHECK-NEXT:                      [0x[[#%.16x,LOCLIST_PAIR_START2:]], 0x[[#%.16x,LOCLIST_PAIR_END2:]]): [[LOCLIST_EXPR2:.*]])
-
-CHECK: .debug_loclists contents:
-CHECK-NEXT: 0x00000000: locations list header: length = 0x00000018, format = DWARF32, version = 0x0005, addr_size = 0x08, seg_size = 0x00, offset_entry_count = 0x00000000
-CHECK-NEXT: 0x[[LOC_OFFSET]]: 
-CHECK-NEXT:            DW_LLE_base_addressx   (0x0000000000000000)
-CHECK-NEXT:            DW_LLE_offset_pair     (0x[[#sub(LOCLIST_PAIR_START,LOCLIST_LOWPC)]], 0x[[#sub(LOCLIST_PAIR_END,LOCLIST_LOWPC)]])
-CHECK-NEXT:            DW_LLE_offset_pair     (0x[[#sub(LOCLIST_PAIR_START2,LOCLIST_LOWPC)]], 0x[[#sub(LOCLIST_PAIR_END2,LOCLIST_LOWPC)]])
-CHECK-NEXT:            DW_LLE_end_of_list     ()
-
-CHECK: .debug_line contents:
-CHECK-NEXT: debug_line[0x00000000]
-CHECK-NEXT: Line table prologue:
-CHECK-NEXT:     total_length: 0x00000048
-CHECK-NEXT:           format: DWARF32
-CHECK-NEXT:          version: 5
-CHECK-NEXT:     address_size: 8
-CHECK-NEXT:  seg_select_size: 0
-CHECK-NEXT:  prologue_length: 0x00000025
-CHECK-NEXT:  min_inst_length: 1
-CHECK-NEXT: max_ops_per_inst: 1
-CHECK-NEXT:  default_is_stmt: 1
-CHECK-NEXT:        line_base: -5
-CHECK-NEXT:       line_range: 14
-CHECK-NEXT:      opcode_base: 13
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_copy] = 0
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_advance_pc] = 1
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_advance_line] = 1
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_set_file] = 1
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_set_column] = 1
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_negate_stmt] = 0
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_set_basic_block] = 0
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_const_add_pc] = 0
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_fixed_advance_pc] = 1
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_set_prologue_end] = 0
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_set_epilogue_begin] = 0
-CHECK-NEXT: standard_opcode_lengths[DW_LNS_set_isa] = 1
-CHECK-NEXT: include_directories[  0] =  .debug_line_str[0x00000000] = "/Users/shubham/Development/test109275485"
-CHECK-NEXT: file_names[  0]:
-CHECK-NEXT:            name:  .debug_line_str[0x00000029] = "a.cpp"
-CHECK-NEXT:       dir_index: 0
-
-
-CHECK: .debug_str contents:
-
-CHECK: .debug_line_str contents:
-CHECK-NEXT: 0x00000000: "/Users/shubham/Development/test109275485"
-CHECK-NEXT: 0x00000029: "a.cpp"
-
-CHECK: .debug_rnglists contents:
-CHECK-NEXT: 0x00000000: range list header: length = 0x0000000e, format = DWARF32, version = 0x0005, addr_size = 0x08, seg_size = 0x00, offset_entry_count = 0x00000000
-CHECK-NEXT: ranges:
-CHECK-NEXT: [[RANGELIST_OFFSET]]: [DW_RLE_base_addressx]:  0x0000000000000000
-CHECK-NEXT: 0x0000000e: [DW_RLE_offset_pair  ]: {{.*}}[0x[[RANGELIST_OFFSET_START]], 0x[[RANGELIST_OFFSET_END]])
-CHECK-NEXT: 0x00000011: [DW_RLE_end_of_list  ]
diff --git a/llvm/test/tools/dsymutil/ARM/DWARFLinkerParallel/fat-dylib-update.test b/llvm/test/tools/dsymutil/ARM/DWARFLinkerParallel/fat-dylib-update.test
deleted file mode 100644
--- a/llvm/test/tools/dsymutil/ARM/DWARFLinkerParallel/fat-dylib-update.test
+++ /dev/null
@@ -1,110 +0,0 @@
-# REQUIRES: object-emission,system-darwin
-# RUN: dsymutil --linker llvm -oso-prepend-path %p/../..  %p/../../Inputs/fat-test.arm.dylib -o %t.dSYM
-# RUN: llvm-dwarfdump -a -v %t.dSYM/Contents/Resources/DWARF/fat-test.arm.dylib | FileCheck %s
-# RUN: dsymutil --linker llvm -u %t.dSYM
-# RUN: llvm-dwarfdump -a -v %t.dSYM/Contents/Resources/DWARF/fat-test.arm.dylib | FileCheck %s
-# RUN: dsymutil --linker llvm -u %t.dSYM -o %t1.dSYM
-# RUN: llvm-dwarfdump -a -v %t1.dSYM/Contents/Resources/DWARF/fat-test.arm.dylib | FileCheck %s
-
-CHECK: /Contents/Resources/DWARF/fat-test.arm.dylib(armv7):	file format Mach-O arm
-
-CHECK: .debug_info contents:
-CHECK:  Compile Unit: length = 0x00000034, format = DWARF32, version = 0x0002, abbr_offset = 0x0000, addr_size = 0x04 (next unit at 0x00000038)
-CHECK:  DW_TAG_compile_unit [1] *
-CHECK:    DW_AT_producer [DW_FORM_strp]	( .debug_str[0x00000001] = "clang version 3.8.0 (trunk 243776)")
-CHECK:    DW_AT_language [DW_FORM_data2]	(DW_LANG_C99)
-CHECK:    DW_AT_name [DW_FORM_strp]	( .debug_str[0x00000024] = "fat-test.c")
-CHECK:    DW_AT_stmt_list [DW_FORM_data4]	(0x00000000)
-CHECK:    DW_AT_comp_dir [DW_FORM_strp]	( .debug_str[0x0000002f] = "/Inputs")
-CHECK:    DW_TAG_variable [2]
-CHECK:      DW_AT_name [DW_FORM_strp]	( .debug_str[0x00000037] = "armv7_var")
-CHECK:      DW_AT_type [DW_FORM_ref4]	(cu + 0x0030 => {0x00000030}
-CHECK:      DW_AT_external [DW_FORM_flag]	(0x01)
-CHECK:      DW_AT_decl_file [DW_FORM_data1]	("/Inputs/fat-test.c")
-CHECK:      DW_AT_decl_line [DW_FORM_data1]	(23)
-CHECK:      DW_AT_location [DW_FORM_block1]	(DW_OP_addr 0x1000)
-CHECK:    DW_TAG_base_type [3]
-CHECK:      DW_AT_name [DW_FORM_strp]	( .debug_str[0x00000041] = "int")
-CHECK:      DW_AT_encoding [DW_FORM_data1]	(DW_ATE_signed)
-CHECK:      DW_AT_byte_size [DW_FORM_data1]	(0x04)
-CHECK:    NULL
-
-
-CHECK: .debug_line contents:
-CHECK: Line table prologue:
-CHECK:     total_length: 0x0000002a
-CHECK:          version: 2
-CHECK:  prologue_length: 0x00000021
-CHECK:  min_inst_length: 1
-CHECK:  default_is_stmt: 1
-CHECK:        line_base: -5
-CHECK:       line_range: 14
-CHECK:      opcode_base: 13
-
-CHECK: /Contents/Resources/DWARF/fat-test.arm.dylib(armv7s):	file format Mach-O arm
-
-CHECK: .debug_info contents:
-CHECK:  Compile Unit: length = 0x00000034, format = DWARF32, version = 0x0002, abbr_offset = 0x0000, addr_size = 0x04 (next unit at 0x00000038)
-CHECK:  DW_TAG_compile_unit [1] *
-CHECK:    DW_AT_producer [DW_FORM_strp]	( .debug_str[0x00000001] = "clang version 3.8.0 (trunk 243776)")
-CHECK:    DW_AT_language [DW_FORM_data2]	(DW_LANG_C99)
-CHECK:    DW_AT_name [DW_FORM_strp]	( .debug_str[0x00000024] = "fat-test.c")
-CHECK:    DW_AT_stmt_list [DW_FORM_data4]	(0x00000000)
-CHECK:    DW_AT_comp_dir [DW_FORM_strp]	( .debug_str[0x0000002f] = "/Inputs")
-CHECK:    DW_TAG_variable [2]
-CHECK:      DW_AT_name [DW_FORM_strp]	( .debug_str[0x00000037] = "armv7s_var")
-CHECK:      DW_AT_type [DW_FORM_ref4]	(cu + 0x0030 => {0x00000030}
-CHECK:      DW_AT_external [DW_FORM_flag]	(0x01)
-CHECK:      DW_AT_decl_file [DW_FORM_data1]	("/Inputs/fat-test.c")
-CHECK:      DW_AT_decl_line [DW_FORM_data1]	(21)
-CHECK:      DW_AT_location [DW_FORM_block1]	(DW_OP_addr 0x1000)
-CHECK:    DW_TAG_base_type [3]
-CHECK:      DW_AT_name [DW_FORM_strp]	( .debug_str[0x00000042] = "int")
-CHECK:      DW_AT_encoding [DW_FORM_data1]	(DW_ATE_signed)
-CHECK:      DW_AT_byte_size [DW_FORM_data1]	(0x04)
-CHECK:    NULL
-
-CHECK: .debug_line contents:
-CHECK: Line table prologue:
-CHECK:     total_length: 0x0000002a
-CHECK:          version: 2
-CHECK:  prologue_length: 0x00000021
-CHECK:  min_inst_length: 1
-CHECK:  default_is_stmt: 1
-CHECK:        line_base: -5
-CHECK:       line_range: 14
-CHECK:      opcode_base: 13
-
-CHECK: /Contents/Resources/DWARF/fat-test.arm.dylib(arm64):	file format Mach-O arm64
-
-CHECK: .debug_info contents:
-CHECK:  Compile Unit: length = 0x00000038, format = DWARF32, version = 0x0002, abbr_offset = 0x0000, addr_size = 0x08 (next unit at 0x0000003c)
-CHECK:  DW_TAG_compile_unit [1] *
-CHECK:    DW_AT_producer [DW_FORM_strp]	( .debug_str[0x00000001] = "clang version 3.8.0 (trunk 243776)")
-CHECK:    DW_AT_language [DW_FORM_data2]	(DW_LANG_C99)
-CHECK:    DW_AT_name [DW_FORM_strp]	( .debug_str[0x00000024] = "fat-test.c")
-CHECK:    DW_AT_stmt_list [DW_FORM_data4]	(0x00000000)
-CHECK:    DW_AT_comp_dir [DW_FORM_strp]	( .debug_str[0x0000002f] = "/Inputs")
-CHECK:    DW_TAG_variable [2]
-CHECK:      DW_AT_name [DW_FORM_strp]	( .debug_str[0x00000037] = "arm64_var")
-CHECK:      DW_AT_type [DW_FORM_ref4]	(cu + 0x0034 => {0x00000034}
-CHECK:      DW_AT_external [DW_FORM_flag]	(0x01)
-CHECK:      DW_AT_decl_file [DW_FORM_data1]	("/Inputs/fat-test.c")
-CHECK:      DW_AT_decl_line [DW_FORM_data1]	(25)
-CHECK:      DW_AT_location [DW_FORM_block1]	(DW_OP_addr 0x4000)
-CHECK:    DW_TAG_base_type [3]
-CHECK:      DW_AT_name [DW_FORM_strp]	( .debug_str[0x00000041] = "int")
-CHECK:      DW_AT_encoding [DW_FORM_data1]	(DW_ATE_signed)
-CHECK:      DW_AT_byte_size [DW_FORM_data1]	(0x04)
-CHECK:    NULL
-
-CHECK: .debug_line contents:
-CHECK: Line table prologue:
-CHECK:     total_length: 0x0000002a
-CHECK:          version: 2
-CHECK:  prologue_length: 0x00000021
-CHECK:  min_inst_length: 1
-CHECK:  default_is_stmt: 1
-CHECK:        line_base: -5
-CHECK:       line_range: 14
-CHECK:      opcode_base: 13
diff --git a/llvm/test/tools/dsymutil/ARM/DWARFLinkerParallel/obfuscated.test b/llvm/test/tools/dsymutil/ARM/DWARFLinkerParallel/obfuscated.test
deleted file mode 100644
--- a/llvm/test/tools/dsymutil/ARM/DWARFLinkerParallel/obfuscated.test
+++ /dev/null
@@ -1,119 +0,0 @@
-REQUIRES: system-darwin
-
-RUN: dsymutil --linker llvm --symbol-map %p/../../Inputs/obfuscated.map %p/../../Inputs/obfuscated.arm64 -f -o - \
-RUN:     | llvm-dwarfdump -v - \
-RUN:     | FileCheck %s
-
-RUN: dsymutil --linker llvm --symbol-map %p/../../Inputs/obfuscated.map %p/../../Inputs/obfuscated.arm64 -f -o - \
-RUN:     | llvm-dwarfdump -v - \
-RUN:     | FileCheck --check-prefix=NOHIDDEN %s
-
-RUN: dsymutil --linker llvm --symbol-map %p/../../Inputs/obfuscated.2.map %p/../../Inputs/obfuscated.2.arm64 -f -o - \
-RUN:     | llvm-dwarfdump -v - \
-RUN:     | FileCheck --check-prefix=NOHIDDEN %s
-
-// Run with plist and make sure dsymutil finds it.
-RUN: mkdir -p %t.dSYM/Contents/Resources/DWARF/
-RUN: mkdir -p %t.mapdir
-RUN: cp %p/../../Inputs/obfuscated.arm64 %t.dSYM/Contents/Resources/DWARF/
-RUN: cp %p/../../Inputs/E828A486-8433-3A5E-B6DB-A6294D28133D.plist %t.dSYM/Contents/Resources/
-RUN: cp %p/../../Inputs/obfuscated.map %t.mapdir/506AA50A-6B26-3B37-86D2-DC6EBD57B720.bcsymbolmap
-RUN: dsymutil --linker llvm --symbol-map %t.mapdir %t.dSYM 2>&1 | FileCheck --check-prefix=OBFUSCATING %s
-
-// Run without plist and make sure dsymutil doesn't crash.
-RUN: rm %t.dSYM/Contents/Resources/E828A486-8433-3A5E-B6DB-A6294D28133D.plist
-RUN: dsymutil --linker llvm --symbol-map %t.mapdir %t.dSYM 2>&1 | FileCheck --check-prefix=NOTOBFUSCATING %s
-
-OBFUSCATING-NOT: not unobfuscating
-
-NOTOBFUSCATING: not unobfuscating
-
-NOHIDDEN-NOT: __hidden#
-
-CHECK: .debug_info contents:
-
-CHECK: DW_TAG_compile_unit [1] *
-CHECK:    DW_AT_producer [DW_FORM_strp]    ( {{.*}} "Apple LLVM version 7.0.0 (clang-700.2.38.2)")
-CHECK:    DW_AT_name [DW_FORM_strp]        ( {{.*}} "main.c")
-CHECK:    DW_AT_comp_dir [DW_FORM_strp]    ( {{.*}} "/Users/steven/dev/alpena/tests/src")
-CHECK:    DW_TAG_subprogram [2]
-CHECK:      DW_AT_name [DW_FORM_strp]      ( {{.*}} "main")
-
-CHECK:  DW_TAG_compile_unit [1] *
-CHECK:    DW_AT_producer [DW_FORM_strp]    ( {{.*}} "Apple LLVM version 7.0.0 (clang-700.2.38.2)")
-CHECK:    DW_AT_name [DW_FORM_strp]        ( {{.*}} "one.c")
-CHECK:    DW_AT_comp_dir [DW_FORM_strp]    ( {{.*}} "/Users/steven/dev/alpena/tests/src")
-CHECK:    DW_TAG_subprogram [2]
-CHECK:      DW_AT_name [DW_FORM_strp]      ( {{.*}} "one")
-
-CHECK:  DW_TAG_compile_unit [1] *
-CHECK:    DW_AT_producer [DW_FORM_strp]    ( {{.*}} "Apple LLVM version 7.0.0 (clang-700.2.38.2)")
-CHECK:    DW_AT_name [DW_FORM_strp]        ( {{.*}} "two.c")
-CHECK:    DW_AT_comp_dir [DW_FORM_strp]    ( {{.*}} "/Users/steven/dev/alpena/tests/src")
-CHECK:    DW_TAG_subprogram [2]
-CHECK:      DW_AT_name [DW_FORM_strp]      ( {{.*}} "two")
-
-CHECK:  DW_TAG_compile_unit [1] *
-CHECK:    DW_AT_producer [DW_FORM_strp]    ( {{.*}} "Apple LLVM version 7.0.0 (clang-700.2.38.2)")
-CHECK:    DW_AT_name [DW_FORM_strp]        ( {{.*}} "three.c")
-CHECK:    DW_AT_comp_dir [DW_FORM_strp]    ( {{.*}} "/Users/steven/dev/alpena/tests/src")
-CHECK:    DW_TAG_subprogram [2]
-CHECK:      DW_AT_name [DW_FORM_strp]      ( {{.*}} "three")
-
-CHECK:  DW_TAG_compile_unit [1] *
-CHECK:    DW_AT_producer [DW_FORM_strp]    ( {{.*}} "Apple LLVM version 7.0.0 (clang-700.2.38.2)")
-CHECK:    DW_AT_name [DW_FORM_strp]        ( {{.*}} "four.c")
-CHECK:    DW_AT_stmt_list [DW_FORM_data4]  (0x0000011e)
-CHECK:    DW_AT_comp_dir [DW_FORM_strp]    ( {{.*}} "/Users/steven/dev/alpena/tests/src")
-CHECK:    DW_TAG_subprogram [2]
-CHECK:      DW_AT_name [DW_FORM_strp]      ( {{.*}} "four")
-
-CHECK:  DW_TAG_compile_unit [1] *
-CHECK:    DW_AT_producer [DW_FORM_strp]    ( {{.*}} "Apple LLVM version 7.0.0 (clang-700.2.38.2)")
-CHECK:    DW_AT_name [DW_FORM_strp]        ( {{.*}} "five.c")
-CHECK:    DW_AT_comp_dir [DW_FORM_strp]    ( {{.*}} "/Users/steven/dev/alpena/tests/src")
-CHECK:    DW_TAG_subprogram [2]
-CHECK:      DW_AT_name [DW_FORM_strp]      ( {{.*}} "five")
-
-CHECK:  DW_TAG_compile_unit [1] *
-CHECK:    DW_AT_producer [DW_FORM_strp]    ( {{.*}} "Apple LLVM version 7.0.0 (clang-700.2.38.2)")
-CHECK:    DW_AT_name [DW_FORM_strp]        ( {{.*}} "six.c")
-CHECK:    DW_AT_comp_dir [DW_FORM_strp]    ( {{.*}} "/Users/steven/dev/alpena/tests/src")
-CHECK:    DW_TAG_subprogram [2]
-CHECK:      DW_AT_name [DW_FORM_strp]      ( {{.*}} "six")
-
-CHECK: .debug_line contents:
-CHECK: file_names[  1]:
-CHECK:            name: "main.c"
-CHECK:       dir_index: 0
-CHECK:        mod_time: 0x00000000
-CHECK: file_names[  1]:
-CHECK:            name: "one.c"
-CHECK:       dir_index: 0
-CHECK:        mod_time: 0x00000000
-CHECK:          length: 0x00000000
-CHECK: file_names[  1]:
-CHECK:            name: "two.c"
-CHECK:       dir_index: 0
-CHECK:        mod_time: 0x00000000
-CHECK:          length: 0x00000000
-CHECK: file_names[  1]:
-CHECK:            name: "three.c"
-CHECK:       dir_index: 0
-CHECK:        mod_time: 0x00000000
-CHECK:          length: 0x00000000
-CHECK: file_names[  1]:
-CHECK:            name: "four.c"
-CHECK:       dir_index: 0
-CHECK:        mod_time: 0x00000000
-CHECK:          length: 0x00000000
-CHECK: file_names[  1]:
-CHECK:            name: "five.c"
-CHECK:       dir_index: 0
-CHECK:        mod_time: 0x00000000
-CHECK:          length: 0x00000000
-CHECK: file_names[  1]:
-CHECK:            name: "six.c"
-CHECK:       dir_index: 0
-CHECK:        mod_time: 0x00000000
-CHECK:          length: 0x00000000
diff --git a/llvm/test/tools/dsymutil/ARM/accel-imported-declarations.test b/llvm/test/tools/dsymutil/ARM/accel-imported-declarations.test
--- a/llvm/test/tools/dsymutil/ARM/accel-imported-declarations.test
+++ b/llvm/test/tools/dsymutil/ARM/accel-imported-declarations.test
@@ -4,6 +4,14 @@
 RUN: llvm-dwarfdump -v %t.dwarf.dSYM | FileCheck %s -check-prefixes=DWARF,COMMON
 RUN: llvm-dwarfdump -v %t.apple.dSYM | FileCheck %s -check-prefixes=APPLE,COMMON
 
+RUN: dsymutil --linker llvm -accelerator=Dwarf -oso-prepend-path=%p/../Inputs \
+RUN:   %p/../Inputs/accel-imported-declaration.macho-arm64 -o %t.dwarf.dSYM
+RUN: dsymutil --linker llvm -accelerator=Apple -oso-prepend-path=%p/../Inputs \
+RUN:   %p/../Inputs/accel-imported-declaration.macho-arm64 -o %t.apple.dSYM
+
+RUN: llvm-dwarfdump -v %t.dwarf.dSYM | FileCheck %s -check-prefixes=DWARF,COMMON
+RUN: llvm-dwarfdump -v %t.apple.dSYM | FileCheck %s -check-prefixes=APPLE,COMMON
+
 COMMON: .debug_info contents
 COMMON: {{.*}}DW_TAG_namespace
 COMMON:   DW_AT_name{{.*}}"A"
diff --git a/llvm/test/tools/dsymutil/ARM/dwarf5-dwarf4-combination-macho.test b/llvm/test/tools/dsymutil/ARM/dwarf5-dwarf4-combination-macho.test
--- a/llvm/test/tools/dsymutil/ARM/dwarf5-dwarf4-combination-macho.test
+++ b/llvm/test/tools/dsymutil/ARM/dwarf5-dwarf4-combination-macho.test
@@ -29,11 +29,16 @@
 
 ; clang -g -c -O1 b.cpp -gdwarf-4 -o 2.o
 
-
 RUN: rm -rf %t.dir && mkdir -p %t.dir
 RUN: dsymutil -y %p/dummy-debug-map-amr64.map -oso-prepend-path=%p/../Inputs/DWARF5-DWARF4-combination -o %t.dir/dwarf5-dwarf4-combination-macho.dSYM
 RUN: llvm-dwarfdump %t.dir/dwarf5-dwarf4-combination-macho.dSYM -a --verbose | FileCheck %s
 
+RUN: rm -rf %t.dir && mkdir -p %t.dir
+RUN: dsymutil --linker llvm -y %p/dummy-debug-map-amr64.map \
+RUN:   -oso-prepend-path=%p/../Inputs/DWARF5-DWARF4-combination \
+RUN:   -o %t.dir/dwarf5-dwarf4-combination-macho.dSYM
+RUN: llvm-dwarfdump %t.dir/dwarf5-dwarf4-combination-macho.dSYM \
+RUN:   -a --verbose | FileCheck %s
 
 CHECK:.debug_abbrev contents:
 CHECK-NEXT: Abbrev table for offset: 0x00000000
@@ -59,7 +64,7 @@
 CHECK-NEXT:                      [0x[[#%.16x,LOCLIST_PAIR_START2:]], 0x[[#%.16x,LOCLIST_PAIR_END2:]]): [[LOCLIST_EXPR2:.*]])
 CHECK: DW_AT_name [DW_FORM_strx]     (indexed (00000007) string = "a")
 
-CHECK: 0x0000004e: Compile Unit: length = 0x00000072, format = DWARF32, version = 0x0004, abbr_offset = 0x0000, addr_size = 0x08 
+CHECK: 0x0000004e: Compile Unit: length = 0x00000072, format = DWARF32, version = 0x0004, abbr_offset = 0x00{{00|5a}}, addr_size = 0x08 
 CHECK: DW_AT_producer [DW_FORM_strp]     ( .debug_str[0x00000001] = "Apple clang version 14.0.3 (clang-1403.0.22.14.1)")
 CHECK: DW_AT_name [DW_FORM_strp] ( .debug_str[0x000000e0] = "b.cpp")
 CHECK: DW_AT_LLVM_sysroot [DW_FORM_strp] ( .debug_str[0x00000039] = "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk")
@@ -69,11 +74,11 @@
 CHECK:              DW_AT_low_pc [DW_FORM_addr]       (0x[[#%.16x,RANGE_LOWPC:]])
 CHECK-NEXT:              DW_AT_ranges [DW_FORM_sec_offset] (0x00000000
 CHECK-NEXT:                 [0x[[#%.16x,RANGE_START:]], 0x[[#%.16x,RANGE_END:]]))
-CHECK: 0x00000080:   DW_TAG_subprogram [6] * (0x00000059)
+CHECK: 0x00000080:   DW_TAG_subprogram {{.*}} * (0x00000059)
 CHECK-NEXT:                DW_AT_low_pc [DW_FORM_addr]     (0x[[#%.16x,LOC_LOWPC:]])
 CHECK: DW_AT_linkage_name [DW_FORM_strp]       ( .debug_str[0x000000e6] = "_Z3bari")
 CHECK: DW_AT_name [DW_FORM_strp]       ( .debug_str[0x000000ee] = "bar")
-CHECK: 0x0000009d:     DW_TAG_formal_parameter [7]   (0x00000080)
+CHECK: 0x0000009d:     DW_TAG_formal_parameter {{.*}}   (0x00000080)
 CHECK-NEXT:                  DW_AT_location [DW_FORM_sec_offset]   (0x[[LOC_OFFSET:[0-9a-f]+]]: 
 CHECK-NEXT:                     [0x[[#%.16x,LOC_PAIR_START:]], 0x[[#%.16x,LOC_PAIR_END:]]): [[LOC_EXPR:.*]]
 CHECK-NEXT:                     [0x[[#%.16x,LOC_PAIR_START2:]], 0x[[#%.16x,LOC_PAIR_END2:]]): [[LOC_EXPR2:.*]])
diff --git a/llvm/test/tools/dsymutil/ARM/dwarf5-macho.test b/llvm/test/tools/dsymutil/ARM/dwarf5-macho.test
--- a/llvm/test/tools/dsymutil/ARM/dwarf5-macho.test
+++ b/llvm/test/tools/dsymutil/ARM/dwarf5-macho.test
@@ -21,6 +21,11 @@
 RUN: dsymutil -y %p/dummy-debug-map-amr64.map -oso-prepend-path=%p/../Inputs/DWARF5 -o %t.dir/dwarf5-macho.dSYM
 RUN: llvm-dwarfdump %t.dir/dwarf5-macho.dSYM -a --verbose | FileCheck %s
 
+RUN: rm -rf %t.dir && mkdir -p %t.dir
+RUN: dsymutil --linker llvm -y %p/dummy-debug-map-amr64.map \
+RUN:   -oso-prepend-path=%p/../Inputs/DWARF5 -o %t.dir/dwarf5-macho.dSYM
+RUN: llvm-dwarfdump %t.dir/dwarf5-macho.dSYM -a --verbose | FileCheck %s
+
 CHECK:.debug_abbrev contents:
 CHECK-NEXT: Abbrev table for offset: 0x00000000
 
diff --git a/llvm/test/tools/dsymutil/ARM/fat-dylib-update.test b/llvm/test/tools/dsymutil/ARM/fat-dylib-update.test
--- a/llvm/test/tools/dsymutil/ARM/fat-dylib-update.test
+++ b/llvm/test/tools/dsymutil/ARM/fat-dylib-update.test
@@ -5,6 +5,13 @@
 # RUN: llvm-dwarfdump -a -v %t.dSYM/Contents/Resources/DWARF/fat-test.arm.dylib | FileCheck %s
 # RUN: dsymutil -u %t.dSYM -o %t1.dSYM
 # RUN: llvm-dwarfdump -a -v %t1.dSYM/Contents/Resources/DWARF/fat-test.arm.dylib | FileCheck %s
+#
+# RUN: dsymutil --linker llvm -oso-prepend-path %p/..  %p/../Inputs/fat-test.arm.dylib -o %t.dSYM
+# RUN: llvm-dwarfdump -a -v %t.dSYM/Contents/Resources/DWARF/fat-test.arm.dylib | FileCheck %s
+# RUN: dsymutil --linker llvm -u %t.dSYM
+# RUN: llvm-dwarfdump -a -v %t.dSYM/Contents/Resources/DWARF/fat-test.arm.dylib | FileCheck %s
+# RUN: dsymutil --linker llvm -u %t.dSYM -o %t1.dSYM
+# RUN: llvm-dwarfdump -a -v %t1.dSYM/Contents/Resources/DWARF/fat-test.arm.dylib | FileCheck %s
 
 CHECK: /Contents/Resources/DWARF/fat-test.arm.dylib(armv7):	file format Mach-O arm
 
diff --git a/llvm/test/tools/dsymutil/ARM/obfuscated.test b/llvm/test/tools/dsymutil/ARM/obfuscated.test
--- a/llvm/test/tools/dsymutil/ARM/obfuscated.test
+++ b/llvm/test/tools/dsymutil/ARM/obfuscated.test
@@ -28,6 +28,36 @@
 RUN: rm %t.dSYM/Contents/Resources/E828A486-8433-3A5E-B6DB-A6294D28133D.plist
 RUN: dsymutil --symbol-map %t.mapdir %t.dSYM 2>&1 | FileCheck --check-prefix=NOTOBFUSCATING %s
 
+// ----------------------------------------
+// Repeat the same steps for --linker llvm.
+RUN: dsymutil --linker llvm --symbol-map %p/../Inputs/obfuscated.map %p/../Inputs/obfuscated.arm64 -f -o - \
+RUN:     | llvm-dwarfdump -v - \
+RUN:     | FileCheck %s
+
+RUN: dsymutil --linker llvm --accelerator=Pub --symbol-map %p/../Inputs/obfuscated.map %p/../Inputs/obfuscated.arm64 -f -o - \
+RUN:     | llvm-dwarfdump -v - \
+RUN:     | FileCheck --check-prefix=PUB %s
+
+RUN: dsymutil --linker llvm --symbol-map %p/../Inputs/obfuscated.map %p/../Inputs/obfuscated.arm64 -f -o - \
+RUN:     | llvm-dwarfdump -v - \
+RUN:     | FileCheck --check-prefix=NOHIDDEN %s
+
+RUN: dsymutil --linker llvm --symbol-map %p/../Inputs/obfuscated.2.map %p/../Inputs/obfuscated.2.arm64 -f -o - \
+RUN:     | llvm-dwarfdump -v - \
+RUN:     | FileCheck --check-prefix=NOHIDDEN %s
+
+// Run with plist and make sure dsymutil finds it.
+RUN: mkdir -p %t.dSYM/Contents/Resources/DWARF/
+RUN: mkdir -p %t.mapdir
+RUN: cp %p/../Inputs/obfuscated.arm64 %t.dSYM/Contents/Resources/DWARF/
+RUN: cp %p/../Inputs/E828A486-8433-3A5E-B6DB-A6294D28133D.plist %t.dSYM/Contents/Resources/
+RUN: cp %p/../Inputs/obfuscated.map %t.mapdir/506AA50A-6B26-3B37-86D2-DC6EBD57B720.bcsymbolmap
+RUN: dsymutil --linker llvm --symbol-map %t.mapdir %t.dSYM 2>&1 | FileCheck --check-prefix=OBFUSCATING %s
+
+// Run without plist and make sure dsymutil doesn't crash.
+RUN: rm %t.dSYM/Contents/Resources/E828A486-8433-3A5E-B6DB-A6294D28133D.plist
+RUN: dsymutil --linker llvm --symbol-map %t.mapdir %t.dSYM 2>&1 | FileCheck --check-prefix=NOTOBFUSCATING %s
+
 OBFUSCATING-NOT: not unobfuscating
 
 NOTOBFUSCATING: not unobfuscating
diff --git a/llvm/test/tools/dsymutil/X86/DWARFLinkerParallel/basic-linking-bundle.test b/llvm/test/tools/dsymutil/X86/DWARFLinkerParallel/basic-linking-bundle.test
deleted file mode 100644
--- a/llvm/test/tools/dsymutil/X86/DWARFLinkerParallel/basic-linking-bundle.test
+++ /dev/null
@@ -1,41 +0,0 @@
-RUN: rm -rf %t
-RUN: mkdir -p %t/dsymdest
-RUN: cat %p/../../Inputs/basic.macho.x86_64 > %t/basic.macho.x86_64
-
-RUN: dsymutil --linker llvm -accelerator=Pub -oso-prepend-path=%p/../.. %t/basic.macho.x86_64
-
-Check that the object file in the bundle exists and is sane:
-RUN: llvm-dwarfdump -a %t/basic.macho.x86_64.dSYM/Contents/Resources/DWARF/basic.macho.x86_64 | FileCheck %S/basic-linking-x86.test
-
-Check that we don't create an empty Remarks directory if there are no remarks.
-RUN: not ls %t/basic.macho.x86_64.dSYM/Contents/Resources/Remarks
-
-Check that llvm-dwarfdump -a recognizes the bundle as a dSYM:
-RUN: llvm-dwarfdump -a %t/basic.macho.x86_64.dSYM | FileCheck %S/basic-linking-x86.test
-
-RUN: FileCheck %s --input-file %t/basic.macho.x86_64.dSYM/Contents/Info.plist
-
-RUN: dsymutil --linker llvm -oso-prepend-path=%p/../.. %t/basic.macho.x86_64 -o %t/dsymdest/basic.macho.x86_64.dSYM
-RUN: llvm-dwarfdump -a %t/dsymdest/basic.macho.x86_64.dSYM/Contents/Resources/DWARF/basic.macho.x86_64 | FileCheck %S/basic-linking-x86.test
-RUN: FileCheck %s --input-file %t/dsymdest/basic.macho.x86_64.dSYM/Contents/Info.plist
-
-CHECK: <?xml version="1.0" encoding="UTF-8"?>
-CHECK-NEXT: <!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-CHECK-NEXT: <plist version="1.0">
-CHECK-NEXT:         <dict>
-CHECK-NEXT:                 <key>CFBundleDevelopmentRegion</key>
-CHECK-NEXT:                 <string>English</string>
-CHECK-NEXT:                 <key>CFBundleIdentifier</key>
-CHECK-NEXT:                 <string>com.apple.xcode.dsym.basic.macho.x86_64</string>
-CHECK-NEXT:                 <key>CFBundleInfoDictionaryVersion</key>
-CHECK-NEXT:                 <string>6.0</string>
-CHECK-NEXT:                 <key>CFBundlePackageType</key>
-CHECK-NEXT:                 <string>dSYM</string>
-CHECK-NEXT:                 <key>CFBundleSignature</key>
-CHECK-NEXT:                 <string>????</string>
-CHECK-NEXT:                 <key>CFBundleShortVersionString</key>
-CHECK-NEXT:                 <string>1.0</string>
-CHECK-NEXT:                 <key>CFBundleVersion</key>
-CHECK-NEXT:                 <string>1</string>
-CHECK-NEXT:         </dict>
-CHECK-NEXT: </plist>
diff --git a/llvm/test/tools/dsymutil/X86/DWARFLinkerParallel/basic-linking-x86.test b/llvm/test/tools/dsymutil/X86/DWARFLinkerParallel/basic-linking-x86.test
deleted file mode 100644
--- a/llvm/test/tools/dsymutil/X86/DWARFLinkerParallel/basic-linking-x86.test
+++ /dev/null
@@ -1,190 +0,0 @@
-RUN: cat %p/../../Inputs/basic.macho.x86_64 > %t1
-RUN: dsymutil --linker llvm -accelerator=Pub -f -oso-prepend-path=%p/../.. %t1
-RUN: llvm-dwarfdump -a %t1.dwarf | FileCheck %s
-RUN: dsymutil --linker llvm -accelerator=Pub -f -o %t2 -oso-prepend-path=%p/../.. %p/../../Inputs/basic.macho.x86_64
-RUN: llvm-dwarfdump -a %t2 | FileCheck %s
-RUN: dsymutil --linker llvm -accelerator=Pub -f -o - -oso-prepend-path=%p/../.. %p/../../Inputs/basic.macho.x86_64 | llvm-dwarfdump -a - | FileCheck %s --check-prefixes=CHECK,BASIC
-RUN: dsymutil --linker llvm -accelerator=Pub -f -o - -oso-prepend-path=%p/../.. %p/../../Inputs/basic-archive.macho.x86_64 | llvm-dwarfdump -a - | FileCheck %s --check-prefixes=CHECK,ARCHIVE
-RUN: dsymutil --linker llvm -accelerator=Pub -dump-debug-map -oso-prepend-path=%p/../.. %p/../../Inputs/basic.macho.x86_64 | dsymutil -accelerator=Pub -f -y -o - - | llvm-dwarfdump -a - | FileCheck %s --check-prefixes=CHECK,BASIC
-RUN: dsymutil --linker llvm -accelerator=Pub -dump-debug-map -oso-prepend-path=%p/../.. %p/../../Inputs/basic-archive.macho.x86_64 | dsymutil -accelerator=Pub -f -o - -y - | llvm-dwarfdump -a - | FileCheck %s --check-prefixes=CHECK,ARCHIVE
-
-CHECK: file format Mach-O 64-bit x86-64
-
-CHECK: debug_info contents
-
-CHECK:  Compile Unit:
-
-CHECK:  DW_TAG_compile_unit
-CHECK:    DW_AT_producer ("Apple LLVM version 6.0 (clang-600.0.39) (based on LLVM 3.5svn)")
-CHECK:    DW_AT_language (DW_LANG_C99)
-CHECK:    DW_AT_name ("basic1.c")
-CHECK:    DW_AT_stmt_list (0x00000000)
-CHECK:    DW_AT_comp_dir ("/Inputs")
-CHECK:    DW_AT_low_pc (0x0000000100000ea0)
-CHECK:    DW_TAG_subprogram
-CHECK:    DW_AT_name ("main")
-CHECK:      DW_AT_decl_file ("/Inputs{{[/\\]}}basic1.c")
-CHECK:      DW_AT_decl_line (23)
-CHECK:      DW_AT_prototyped (0x01)
-CHECK:      DW_AT_type (0x00000063
-CHECK:      DW_AT_external (0x01)
-CHECK:      DW_AT_accessibility (DW_ACCESS_public)
-CHECK:      DW_AT_low_pc (0x0000000100000ea0)
-CHECK:      DW_AT_high_pc (0x0000000100000ec4)
-CHECK:      DW_AT_frame_base (DW_OP_reg6 RBP)
-CHECK:      DW_TAG_formal_parameter
-CHECK:        DW_AT_name ("argc")
-CHECK:        DW_AT_decl_file ("/Inputs{{[/\\]}}basic1.c")
-CHECK:        DW_AT_decl_line (23)
-CHECK:        DW_AT_type (0x00000063
-CHECK:        DW_AT_location (DW_OP_fbreg -8)
-CHECK:      DW_TAG_formal_parameter
-CHECK:        DW_AT_name ("argv")
-CHECK:        DW_AT_decl_file ("/Inputs{{[/\\]}}basic1.c")
-CHECK:        DW_AT_decl_line (23)
-CHECK:        DW_AT_type (0x0000006a
-CHECK:        DW_AT_location (DW_OP_fbreg -16)
-CHECK:      NULL
-CHECK:    DW_TAG_base_type
-CHECK:      DW_AT_name ("int")
-CHECK:      DW_AT_encoding (DW_ATE_signed)
-CHECK:      DW_AT_byte_size (0x04)
-CHECK:    DW_TAG_pointer_type
-CHECK:      DW_AT_type (0x0000006f
-CHECK:    DW_TAG_pointer_type
-CHECK:      DW_AT_type (0x00000074
-CHECK:    DW_TAG_const_type
-CHECK:      DW_AT_type (0x00000079
-CHECK:    DW_TAG_base_type
-CHECK:      DW_AT_name ("char")
-CHECK:      DW_AT_encoding (DW_ATE_signed_char)
-CHECK:      DW_AT_byte_size (0x01)
-CHECK:    NULL
-
-CHECK:  Compile Unit:
-
-CHECK:  DW_TAG_compile_unit
-CHECK:   DW_AT_producer ("Apple LLVM version 6.0 (clang-600.0.39) (based on LLVM 3.5svn)")
-CHECK:   DW_AT_name ("basic2.c")
-CHECK:   DW_AT_stmt_list (0x0000003f)
-CHECK:   DW_AT_comp_dir ("/Inputs")
-CHECK:   DW_AT_low_pc (0x0000000100000ed0)
-CHECK:    DW_TAG_base_type
-CHECK:      DW_AT_name ("int")
-CHECK:    DW_TAG_variable
-CHECK:      DW_AT_name ("private_int")
-CHECK:      DW_AT_type (0x000000a7
-CHECK:      DW_AT_decl_file ("/Inputs{{[/\\]}}basic2.c")
-BASIC:      DW_AT_location (DW_OP_addr 0x100001008)
-ARCHIVE:    DW_AT_location (DW_OP_addr 0x100001004)
-CHECK:    DW_TAG_variable
-CHECK:      DW_AT_name ("baz")
-CHECK:      DW_AT_type (0x000000a7
-CHECK:      DW_AT_decl_file ("/Inputs{{[/\\]}}basic2.c")
-CHECK:      DW_AT_location (DW_OP_addr 0x100001000)
-CHECK:    DW_TAG_subprogram
-CHECK:      DW_AT_name ("foo")
-CHECK:      DW_AT_decl_file ("/Inputs{{[/\\]}}basic2.c")
-CHECK:      DW_AT_type (0x000000a7
-CHECK:      DW_AT_low_pc (0x0000000100000ed0)
-CHECK:      DW_AT_high_pc (0x0000000100000f19)
-CHECK:      DW_AT_frame_base (DW_OP_reg6 RBP)
-CHECK:      DW_TAG_formal_parameter
-CHECK:        DW_AT_name ("arg")
-CHECK:        DW_AT_type (0x000000a7
-CHECK:        DW_AT_location (DW_OP_fbreg -4)
-CHECK:      NULL
-CHECK:    DW_TAG_subprogram
-CHECK:      DW_AT_name ("inc")
-CHECK:      DW_AT_type (0x000000a7
-CHECK:      DW_AT_low_pc (0x0000000100000f20)
-CHECK:      DW_AT_high_pc (0x0000000100000f37)
-CHECK:      DW_AT_frame_base (DW_OP_reg6 RBP)
-CHECK:    NULL
-
-CHECK:  Compile Unit:
-
-CHECK:  DW_TAG_compile_unit
-CHECK:    DW_AT_producer ("Apple LLVM version 6.0 (clang-600.0.39) (based on LLVM 3.5svn)")
-CHECK:    DW_AT_name ("basic3.c")
-CHECK:    DW_AT_stmt_list (0x00000093)
-CHECK:    DW_AT_comp_dir ("/Inputs")
-CHECK:    DW_AT_low_pc (0x0000000100000f40)
-CHECK:    DW_TAG_variable
-CHECK:      DW_AT_name ("val")
-CHECK:      DW_AT_type (0x00000162
-CHECK:      DW_AT_decl_file ("/Inputs{{[/\\]}}basic3.c")
-BASIC:      DW_AT_location (DW_OP_addr 0x100001004)
-ARCHIVE:    DW_AT_location (DW_OP_addr 0x100001008)
-CHECK:    DW_TAG_volatile_type
-CHECK:      DW_AT_type (0x00000167
-CHECK:    DW_TAG_base_type
-CHECK:      DW_AT_name ("int")
-CHECK:    DW_TAG_subprogram
-CHECK:      DW_AT_name ("bar")
-CHECK:      DW_AT_type (0x00000167
-CHECK:      DW_AT_low_pc (0x0000000100000f40)
-CHECK:      DW_AT_high_pc (0x0000000100000f84)
-CHECK:      DW_AT_frame_base (DW_OP_reg6 RBP)
-CHECK:      DW_TAG_formal_parameter
-CHECK:        DW_AT_name ("arg")
-CHECK:        DW_AT_type (0x00000167
-CHECK:        DW_AT_location (DW_OP_fbreg -8)
-CHECK:      NULL
-CHECK:    DW_TAG_subprogram
-CHECK:      DW_AT_name ("inc")
-CHECK:      DW_AT_type (0x00000167
-CHECK:      DW_AT_low_pc (0x0000000100000f90)
-CHECK:      DW_AT_high_pc (0x0000000100000fa9)
-CHECK:      DW_AT_frame_base (DW_OP_reg6 RBP)
-
-CHECK:    NULL
-
-CHECK-NOT: .debug_loc contents
-
-CHECK:.debug_aranges contents:
-CHECK-NEXT:Address Range Header: length = 0x0000002c, format = DWARF32, version = 0x0002, cu_offset = 0x00000000, addr_size = 0x08, seg_size = 0x00
-CHECK-NEXT:[0x0000000100000ea0, 0x0000000100000ec4)
-CHECK-NEXT:Address Range Header: length = 0x0000003c, format = DWARF32, version = 0x0002, cu_offset = 0x00000081, addr_size = 0x08, seg_size = 0x00
-CHECK-NEXT:[0x0000000100000ed0, 0x0000000100000f19)
-CHECK-NEXT:[0x0000000100000f20, 0x0000000100000f37)
-CHECK-NEXT:Address Range Header: length = 0x0000003c, format = DWARF32, version = 0x0002, cu_offset = 0x00000126, addr_size = 0x08, seg_size = 0x00
-CHECK-NEXT:[0x0000000100000f40, 0x0000000100000f84)
-CHECK-NEXT:[0x0000000100000f90, 0x0000000100000fa9)
-
-CHECK: .debug_line contents:
-CHECK: file_names[  1]:
-CHECK-NEXT: name: "basic1.c"
-CHECK-NEXT: dir_index: 0
-CHECK: Address            Line   Column File   ISA Discriminator OpIndex Flags
-CHECK-NEXT: ------------------ ------ ------ ------ --- ------------- ------- -------------
-CHECK-NEXT: 0x0000000100000ea0     23      0      1   0             0       0  is_stmt
-CHECK-NEXT: 0x0000000100000eb6     24      0      1   0             0       0  is_stmt prologue_end
-CHECK-NEXT: 0x0000000100000ec4     24      0      1   0             0       0  is_stmt end_sequence
-
-CHECK: file_names[  1]:
-CHECK-NEXT: name: "basic2.c"
-CHECK-NEXT: dir_index: 0
-CHECK: Address            Line   Column File   ISA Discriminator OpIndex Flags
-CHECK-NEXT: ------------------ ------ ------ ------ --- ------------- ------- -------------
-CHECK-NEXT: 0x0000000100000ed0     19      0      1   0             0       0  is_stmt
-CHECK-NEXT: 0x0000000100000ee2     20      0      1   0             0       0  is_stmt prologue_end
-CHECK-NEXT: 0x0000000100000f19     20      0      1   0             0       0  is_stmt end_sequence
-CHECK-NEXT: 0x0000000100000f20     14      0      1   0             0       0  is_stmt
-CHECK-NEXT: 0x0000000100000f24     15      0      1   0             0       0  is_stmt prologue_end
-CHECK-NEXT: 0x0000000100000f37     15      0      1   0             0       0  is_stmt end_sequence
-
-CHECK: file_names[  1]:
-CHECK-NEXT: name: "basic3.c"
-CHECK-NEXT: dir_index: 0
-CHECK: Address            Line   Column File   ISA Discriminator OpIndex Flags
-CHECK-NEXT: ------------------ ------ ------ ------ --- ------------- ------- -------------
-CHECK-NEXT: 0x0000000100000f40     16      0      1   0             0       0  is_stmt
-CHECK-NEXT: 0x0000000100000f4b     17      0      1   0             0       0  is_stmt prologue_end
-CHECK-NEXT: 0x0000000100000f58     18      0      1   0             0       0  is_stmt
-CHECK-NEXT: 0x0000000100000f6c     19      0      1   0             0       0  is_stmt
-CHECK-NEXT: 0x0000000100000f7b     20      0      1   0             0       0  is_stmt
-CHECK-NEXT: 0x0000000100000f84     20      0      1   0             0       0  is_stmt end_sequence
-CHECK-NEXT: 0x0000000100000f90     11      0      1   0             0       0  is_stmt
-CHECK-NEXT: 0x0000000100000f9b     12      0      1   0             0       0  is_stmt prologue_end
-CHECK-NEXT: 0x0000000100000fa9     12      0      1   0             0       0  is_stmt end_sequence
diff --git a/llvm/test/tools/dsymutil/X86/DWARFLinkerParallel/basic-lto-dw4-linking-x86.test b/llvm/test/tools/dsymutil/X86/DWARFLinkerParallel/basic-lto-dw4-linking-x86.test
deleted file mode 100644
--- a/llvm/test/tools/dsymutil/X86/DWARFLinkerParallel/basic-lto-dw4-linking-x86.test
+++ /dev/null
@@ -1,183 +0,0 @@
-RUN: dsymutil --linker llvm -f -o - -oso-prepend-path=%p/../.. %p/../../Inputs/basic-lto-dw4.macho.x86_64 | llvm-dwarfdump -a - | FileCheck %s
-
-CHECK: file format Mach-O 64-bit x86-64
-
-CHECK: debug_info contents
-
-CHECK:  Compile Unit: {{.*}} version = 0x0004
-CHECK:  DW_TAG_compile_unit
-CHECK:    DW_AT_producer ("clang version 3.7.0 ")
-CHECK:    DW_AT_language (DW_LANG_C99)
-CHECK:    DW_AT_name ("basic1.c")
-CHECK:    DW_AT_stmt_list (0x00000000)
-CHECK:    DW_AT_comp_dir ("/Inputs")
-CHECK:    DW_AT_low_pc (0x0000000100000f40)
-CHECK:    DW_AT_high_pc (0x0000000100000f4b)
-CHECK:    DW_TAG_subprogram
-CHECK:      DW_AT_low_pc (0x0000000100000f40)
-CHECK:      DW_AT_high_pc (0x0000000100000f4b)
-CHECK:      DW_AT_frame_base (DW_OP_reg6 RBP)
-CHECK:      DW_AT_name ("main")
-CHECK:      DW_AT_decl_file ("/Inputs{{[/\\]}}basic1.c")
-CHECK:      DW_AT_prototyped (true)
-CHECK:      DW_AT_type (0x00000000000000a1
-CHECK:      DW_AT_external (true)
-CHECK:      DW_TAG_formal_parameter
-CHECK:        DW_AT_location (DW_OP_reg5 RDI, DW_OP_piece 0x4)
-CHECK:        DW_AT_name ("argc")
-CHECK:        DW_AT_decl_file ("/Inputs{{[/\\]}}basic1.c")
-CHECK:        DW_AT_type (0x00000000000000a1
-CHECK:      DW_TAG_formal_parameter
-CHECK:        DW_AT_location (DW_OP_reg4 RSI)
-CHECK:        DW_AT_name ("argv")
-CHECK:        DW_AT_type (0x00000060
-CHECK:      NULL
-CHECK:    DW_TAG_pointer_type
-CHECK:       DW_AT_type (0x00000065
-CHECK:    DW_TAG_pointer_type
-CHECK:    DW_TAG_const_type
-CHECK:    DW_TAG_base_type
-CHECK:      DW_AT_name ("char")
-CHECK:      DW_AT_encoding (DW_ATE_signed_char)
-CHECK:      DW_AT_byte_size (0x01)
-CHECK:    NULL
-
-CHECK:  Compile Unit:{{.*}} version = 0x0004
-
-CHECK:  DW_TAG_compile_unit
-CHECK:    DW_AT_producer ("clang version 3.7.0 ")
-CHECK:    DW_AT_language (DW_LANG_C99)
-CHECK:    DW_AT_name ("basic2.c")
-CHECK:    DW_AT_stmt_list (0x00000044)
-CHECK:    DW_AT_low_pc (0x0000000100000f50)
-CHECK:    DW_AT_high_pc (0x0000000100000f87)
-CHECK:    DW_TAG_base_type
-CHECK:      DW_AT_name ("int")
-CHECK:    DW_TAG_variable
-CHECK:      DW_AT_name ("baz")
-CHECK:      DW_AT_location (DW_OP_addr 0x100001000)
-CHECK:    DW_TAG_variable
-CHECK:      DW_AT_name ("private_int")
-CHECK:      DW_AT_decl_file ("/Inputs{{[/\\]}}basic2.c")
-CHECK:      DW_AT_location (DW_OP_addr 0x100001008)
-CHECK:    DW_TAG_subprogram
-CHECK:      DW_AT_name ("inc")
-CHECK:      DW_AT_type (0x000000a1
-CHECK:      DW_AT_inline (DW_INL_inlined)
-CHECK:    DW_TAG_subprogram
-CHECK:      DW_AT_low_pc (0x0000000100000f50)
-CHECK:      DW_AT_high_pc (0x0000000100000f87)
-CHECK:      DW_AT_frame_base (DW_OP_reg6 RBP)
-CHECK:      DW_AT_name ("foo")
-CHECK:      DW_AT_decl_file ("/Inputs{{[/\\]}}basic2.c")
-CHECK:      DW_AT_prototyped (true)
-CHECK:      DW_AT_type (0x000000a1
-CHECK:      DW_TAG_formal_parameter
-CHECK:        DW_AT_location (0x00000000
-CHECK:          [0x0000000100000f50, 0x0000000100000f5c): DW_OP_reg5 RDI, DW_OP_piece 0x4)
-CHECK:        DW_AT_name ("arg")
-CHECK:        DW_AT_type (0x000000a1
-CHECK:      DW_TAG_inlined_subroutine
-CHECK:        DW_AT_abstract_origin (0x000000d2 "inc")
-CHECK:        DW_AT_low_pc (0x0000000100000f61)
-CHECK:        DW_AT_high_pc (0x0000000100000f70)
-CHECK:      NULL
-CHECK:    NULL
-
-CHECK:  Compile Unit: {{.*}} version = 0x0004
-
-CHECK:  DW_TAG_compile_unit
-CHECK:    DW_AT_producer ("clang version 3.7.0 ")
-CHECK:    DW_AT_name ("basic3.c")
-CHECK:    DW_AT_stmt_list (0x0000009a)
-CHECK:    DW_AT_low_pc (0x0000000100000f90)
-CHECK:    DW_AT_high_pc (0x0000000100000fb4)
-CHECK:    DW_TAG_variable
-CHECK:      DW_AT_name ("val")
-CHECK:      DW_AT_decl_file ("/Inputs{{[/\\]}}basic3.c")
-CHECK:      DW_AT_location (DW_OP_addr 0x100001004)
-CHECK:    DW_TAG_volatile_type
-CHECK:    DW_TAG_subprogram
-CHECK:      DW_AT_name ("inc")
-CHECK:      DW_AT_inline (DW_INL_inlined)
-CHECK:    DW_TAG_subprogram
-CHECK:      DW_AT_low_pc (0x0000000100000f90)
-CHECK:      DW_AT_high_pc (0x0000000100000fb4)
-CHECK:      DW_AT_frame_base (DW_OP_reg6 RBP)
-CHECK:      DW_AT_name ("bar")
-CHECK:      DW_TAG_formal_parameter
-CHECK:        DW_AT_location (0x00000025
-CHECK:          [0x0000000100000f90, 0x0000000100000f9f): DW_OP_reg5 RDI, DW_OP_piece 0x4
-CHECK:          [0x0000000100000fa9, 0x0000000100000fad): DW_OP_reg5 RDI, DW_OP_piece 0x4)
-CHECK:        DW_AT_name ("arg")
-CHECK:      DW_TAG_inlined_subroutine
-CHECK:        DW_AT_abstract_origin (0x0000015f "inc")
-CHECK:        DW_AT_ranges (0x00000000
-CHECK:           [0x0000000100000f94, 0x0000000100000f9a)
-CHECK:           [0x0000000100000f9f, 0x0000000100000fa7))
-
-CHECK:      NULL
-CHECK:    NULL
-
-
-CHECK: .debug_loc contents:
-CHECK-NEXT: 0x00000000:
-CHECK-NEXT:              (0x0000000000000000, 0x000000000000000c): DW_OP_reg5 RDI, DW_OP_piece 0x4
-CHECK-NOT: :
-CHECK:      0x00000025:
-CHECK-NEXT:              (0x0000000000000000, 0x000000000000000f): DW_OP_reg5 RDI, DW_OP_piece 0x4
-CHECK-NEXT:              (0x0000000000000019, 0x000000000000001d): DW_OP_reg5 RDI, DW_OP_piece 0x4
-
-
-CHECK: .debug_aranges contents:
-CHECK-NEXT: Address Range Header: length = 0x0000002c, format = DWARF32, version = 0x0002, cu_offset = 0x00000000, addr_size = 0x08, seg_size = 0x00
-CHECK-NEXT: [0x0000000100000f40,  0x0000000100000f4b)
-CHECK-NEXT: Address Range Header: length = 0x0000002c, format = DWARF32, version = 0x0002, cu_offset = 0x00000077, addr_size = 0x08, seg_size = 0x00
-CHECK-NEXT: [0x0000000100000f50, 0x0000000100000f87)
-CHECK-NEXT: Address Range Header: length = 0x0000002c, format = DWARF32, version = 0x0002, cu_offset = 0x0000011b, addr_size = 0x08, seg_size = 0x00
-CHECK-NEXT: [0x0000000100000f90, 0x0000000100000fb4)
-
-CHECK: .debug_line contents:
-CHECK: file_names[  1]:
-CHECK-NEXT: name: "basic1.c"
-CHECK-NEXT: dir_index: 0
-CHECK: Address            Line   Column File   ISA Discriminator OpIndex Flags
-CHECK-NEXT: ------------------ ------ ------ ------ --- ------------- ------- -------------
-CHECK-NEXT: 0x0000000100000f40     26      0      1   0             0       0  is_stmt
-CHECK-NEXT: 0x0000000100000f44     27     10      1   0             0       0  is_stmt prologue_end
-CHECK-NEXT: 0x0000000100000f49     27      3      1   0             0       0
-CHECK-NEXT: 0x0000000100000f4b     27      3      1   0             0       0  end_sequence
-
-CHECK: file_names[  1]:
-CHECK-NEXT: name: "basic2.c"
-CHECK-NEXT: dir_index: 0
-CHECK: Address            Line   Column File   ISA Discriminator OpIndex Flags
-CHECK-NEXT: ------------------ ------ ------ ------ --- ------------- ------- -------------
-CHECK-NEXT: 0x0000000100000f50     19      0      1   0             0       0  is_stmt
-CHECK-NEXT: 0x0000000100000f54     20     18      1   0             0       0  is_stmt prologue_end
-CHECK-NEXT: 0x0000000100000f5a     20     17      1   0             0       0
-CHECK-NEXT: 0x0000000100000f5c     20     10      1   0             0       0
-CHECK-NEXT: 0x0000000100000f61     15     10      1   0             0       0  is_stmt
-CHECK-NEXT: 0x0000000100000f70     20     23      1   0             0       0  is_stmt
-CHECK-NEXT: 0x0000000100000f74     20     36      1   0             0       0
-CHECK-NEXT: 0x0000000100000f83     20     31      1   0             0       0
-CHECK-NEXT: 0x0000000100000f85     20      3      1   0             0       0
-CHECK-NEXT: 0x0000000100000f87     20      3      1   0             0       0  end_sequence
-
-CHECK: file_names[  1]:
-CHECK-NEXT: name: "basic3.c"
-CHECK-NEXT: dir_index: 0
-CHECK: Address            Line   Column File   ISA Discriminator OpIndex Flags
-CHECK-NEXT: ------------------ ------ ------ ------ --- ------------- ------- -------------
-CHECK-NEXT: 0x0000000100000f90     16      0      1   0             0       0  is_stmt
-CHECK-NEXT: 0x0000000100000f94     12     10      1   0             0       0  is_stmt prologue_end
-CHECK-NEXT: 0x0000000100000f9a     17      7      1   0             0       0  is_stmt
-CHECK-NEXT: 0x0000000100000f9f     12     10      1   0             0       0  is_stmt
-CHECK-NEXT: 0x0000000100000fa7     20      1      1   0             0       0  is_stmt
-CHECK-NEXT: 0x0000000100000fa9     19     18      1   0             0       0  is_stmt
-CHECK-NEXT: 0x0000000100000fab     19     10      1   0             0       0
-CHECK-NEXT: 0x0000000100000fb2     20      1      1   0             0       0  is_stmt
-CHECK-NEXT: 0x0000000100000fb4     20      1      1   0             0       0  is_stmt end_sequence
-
-CHECK-NOT: .debug_pubnames contents:
-CHECK-NOT: .debug_pubtypes contents:
diff --git a/llvm/test/tools/dsymutil/X86/DWARFLinkerParallel/basic-lto-linking-x86.test b/llvm/test/tools/dsymutil/X86/DWARFLinkerParallel/basic-lto-linking-x86.test
deleted file mode 100644
--- a/llvm/test/tools/dsymutil/X86/DWARFLinkerParallel/basic-lto-linking-x86.test
+++ /dev/null
@@ -1,182 +0,0 @@
-RUN: dsymutil --linker llvm -f -o - -oso-prepend-path=%p/../.. %p/../../Inputs/basic-lto.macho.x86_64 | llvm-dwarfdump -a - | FileCheck %s
-RUN: dsymutil --linker llvm -oso-prepend-path=%p/../.. -dump-debug-map %p/../../Inputs/basic-lto.macho.x86_64 | dsymutil -f -o - -y - | llvm-dwarfdump -a - | FileCheck %s
-
-CHECK: file format Mach-O 64-bit x86-64
-
-CHECK: debug_info contents
-
-CHECK:  Compile Unit:
-
-CHECK:  DW_TAG_compile_unit
-CHECK:    DW_AT_producer ("Apple LLVM version 6.0 (clang-600.0.39) (based on LLVM 3.5svn)")
-CHECK:    DW_AT_language (DW_LANG_C99)
-CHECK:    DW_AT_name ("basic1.c")
-CHECK:    DW_AT_stmt_list (0x00000000)
-CHECK:    DW_AT_comp_dir ("/Inputs")
-CHECK:    DW_AT_low_pc (0x0000000100000f40)
-CHECK:    DW_TAG_subprogram
-CHECK:      DW_AT_name ("main")
-CHECK:      DW_AT_decl_file ("/Inputs{{[/\\]}}basic1.c")
-CHECK:      DW_AT_decl_line (23)
-CHECK:      DW_AT_prototyped (0x01)
-CHECK:      DW_AT_type (0x00000063
-CHECK:      DW_AT_external (0x01)
-CHECK:      DW_AT_accessibility (DW_ACCESS_public)
-CHECK:      DW_AT_low_pc (0x0000000100000f40)
-CHECK:      DW_AT_high_pc (0x0000000100000f4b)
-CHECK:      DW_AT_frame_base (DW_OP_reg6 RBP)
-CHECK:      DW_TAG_formal_parameter
-CHECK:        DW_AT_name ("argc")
-CHECK:        DW_AT_type (0x00000063
-CHECK:        DW_AT_location (DW_OP_reg5 RDI, DW_OP_piece 0x4)
-CHECK:      DW_TAG_formal_parameter
-CHECK:        DW_AT_name ("argv")
-CHECK:        DW_AT_type (0x0000006a
-CHECK:        DW_AT_location (DW_OP_reg4 RSI)
-CHECK:      NULL
-CHECK:    DW_TAG_base_type
-CHECK:      DW_AT_name ("int")
-CHECK:      DW_AT_encoding (DW_ATE_signed)
-CHECK:      DW_AT_byte_size (0x04)
-CHECK:    DW_TAG_pointer_type
-CHECK:      DW_AT_type (0x0000006f
-CHECK:    DW_TAG_pointer_type
-CHECK:      DW_AT_type (0x00000074
-CHECK:    DW_TAG_const_type
-CHECK:      DW_AT_type (0x00000079
-CHECK:    DW_TAG_base_type
-CHECK:      DW_AT_name ("char")
-CHECK:      DW_AT_encoding (DW_ATE_signed_char)
-CHECK:      DW_AT_byte_size (0x01)
-CHECK:    NULL
-
-CHECK:  Compile Unit:
-
-CHECK:  DW_TAG_compile_unit
-CHECK:    DW_AT_producer ("Apple LLVM version 6.0 (clang-600.0.39) (based on LLVM 3.5svn)")
-CHECK:    DW_AT_name ("basic2.c")
-CHECK:    DW_AT_stmt_list (0x0000003e)
-CHECK:    DW_AT_comp_dir ("/Inputs")
-CHECK:   DW_AT_low_pc (0x0000000100000f50)
-CHECK:    DW_TAG_variable
-CHECK:      DW_AT_name ("private_int")
-CHECK:      DW_AT_type (0x0000000000000063
-CHECK:      DW_AT_decl_file ("/Inputs{{[/\\]}}basic2.c")
-CHECK:      DW_AT_location (DW_OP_addr 0x100001008)
-CHECK:    DW_TAG_variable
-CHECK:      DW_AT_name ("baz")
-CHECK:      DW_AT_type (0x0000000000000063
-CHECK:      DW_AT_location (DW_OP_addr 0x100001000)
-CHECK:    DW_TAG_subprogram
-CHECK:      DW_AT_name ("foo")
-CHECK:      DW_AT_type (0x0000000000000063
-CHECK:      DW_AT_low_pc (0x0000000100000f50)
-CHECK:      DW_AT_high_pc (0x0000000100000f89)
-CHECK:      DW_AT_frame_base (DW_OP_reg6 RBP)
-CHECK:      DW_TAG_formal_parameter
-CHECK:        DW_AT_name ("arg")
-CHECK:        DW_AT_type (0x0000000000000063
-CHECK:        DW_AT_location (0x00000000
-CHECK:          [0x0000000100000f50, 0x0000000100000f5e): DW_OP_reg5 RDI, DW_OP_piece 0x4)
-CHECK:[[INC1:0x[0-9a-f]*]]{{.*}}DW_TAG_inlined_subroutine
-CHECK:        DW_AT_abstract_origin (0x00000128 "inc")
-CHECK:        DW_AT_low_pc (0x0000000100000f63)
-CHECK:        DW_AT_high_pc (0x0000000100000f72)
-CHECK:        DW_AT_call_line (20)
-CHECK:      NULL
-CHECK:    DW_TAG_subprogram
-CHECK:      DW_AT_name ("inc")
-CHECK:      DW_AT_type (0x0000000000000063
-CHECK:      DW_AT_inline (DW_INL_inlined)
-CHECK:    NULL
-
-CHECK:  Compile Unit:
-
-CHECK:  DW_TAG_compile_unit
-CHECK:    DW_AT_producer ("Apple LLVM version 6.0 (clang-600.0.39) (based on LLVM 3.5svn)")
-CHECK:    DW_AT_name ("basic3.c")
-CHECK:    DW_AT_stmt_list (0x0000007e)
-CHECK:    DW_AT_comp_dir ("/Inputs")
-CHECK:    DW_AT_low_pc (0x0000000100000f90)
-CHECK:    DW_TAG_variable
-CHECK:      DW_AT_name ("val")
-CHECK:      DW_AT_type (0x00000176
-CHECK:      DW_AT_decl_file ("/Inputs{{[/\\]}}basic3.c")
-CHECK:      DW_AT_location (DW_OP_addr 0x100001004)
-CHECK:    DW_TAG_volatile_type
-CHECK:      DW_AT_type (0x0000000000000063
-CHECK:    DW_TAG_subprogram
-CHECK:      DW_AT_name ("bar")
-CHECK:      DW_AT_type (0x0000000000000063
-CHECK:      DW_AT_low_pc (0x0000000100000f90)
-CHECK:      DW_AT_high_pc (0x0000000100000fb4)
-CHECK:      DW_AT_frame_base (DW_OP_reg6 RBP)
-CHECK:      DW_TAG_formal_parameter
-CHECK:        DW_AT_name ("arg")
-CHECK:        DW_AT_type (0x0000000000000063
-CHECK:        DW_AT_location (0x00000025
-CHECK:          [0x0000000100000f90, 0x0000000100000f9f): DW_OP_reg5 RDI, DW_OP_piece 0x4
-CHECK:          [0x0000000100000fa9, 0x0000000100000fad): DW_OP_reg5 RDI, DW_OP_piece 0x4)
-CHECK:      DW_TAG_lexical_block
-CHECK:        DW_AT_low_pc (0x0000000100000f94)
-CHECK:        DW_AT_high_pc (0x0000000100000fa7)
-CHECK:[[INC2:0x[0-9a-f]*]]{{.*}}DW_TAG_inlined_subroutine
-CHECK:          DW_AT_abstract_origin (0x000001d4 "inc")
-CHECK:          DW_AT_ranges (0x00000000
-CHECK:             [0x0000000100000f94, 0x0000000100000f9a)
-CHECK:             [0x0000000100000f9f, 0x0000000100000fa7))
-CHECK:        NULL
-CHECK:      NULL
-CHECK:    DW_TAG_subprogram
-CHECK:      DW_AT_name ("inc")
-CHECK:      DW_AT_type (0x0000000000000063
-CHECK:    NULL
-
-CHECK: .debug_loc contents:
-CHECK-NEXT: 0x00000000:
-CHECK-NEXT:              (0x0000000000000000, 0x000000000000000e): DW_OP_reg5 RDI, DW_OP_piece 0x4
-CHECK-NOT: :
-CHECK:      0x00000025:
-CHECK-NEXT:              (0x0000000000000000, 0x000000000000000f): DW_OP_reg5 RDI, DW_OP_piece 0x4
-CHECK-NEXT:              (0x0000000000000019, 0x000000000000001d): DW_OP_reg5 RDI, DW_OP_piece 0x4
-
-CHECK: .debug_aranges contents:
-CHECK-NEXT: Address Range Header: length = 0x0000002c, format = DWARF32, version = 0x0002, cu_offset = 0x00000000, addr_size = 0x08, seg_size = 0x00
-CHECK-NEXT: [0x0000000100000f40, 0x0000000100000f4b)
-CHECK-NEXT: Address Range Header: length = 0x0000002c, format = DWARF32, version = 0x0002, cu_offset = 0x00000081, addr_size = 0x08, seg_size = 0x00
-CHECK-NEXT: [0x0000000100000f50, 0x0000000100000f89)
-CHECK-NEXT: Address Range Header: length = 0x0000002c, format = DWARF32, version = 0x0002, cu_offset = 0x0000013a, addr_size = 0x08, seg_size = 0x00
-CHECK-NEXT: [0x0000000100000f90, 0x0000000100000fb4)
-
-
-CHECK: .debug_line contents
-CHECK: file_names[  1]:
-CHECK-NEXT: name: "basic1.c"
-CHECK-NEXT: dir_index: 0
-CHECK: 0x0000000100000f40     23      0      1   0             0       0  is_stmt
-CHECK: 0x0000000100000f44     24      0      1   0             0       0  is_stmt prologue_end
-CHECK: 0x0000000100000f4b     24      0      1   0             0       0  is_stmt end_sequence
-
-CHECK: file_names[  1]:
-CHECK-NEXT: name: "basic2.c"
-CHECK-NEXT: dir_index: 0
-CHECK: 0x0000000100000f50     19      0      1   0             0       0  is_stmt
-CHECK: 0x0000000100000f54     20      0      1   0             0       0  is_stmt prologue_end
-CHECK: 0x0000000100000f63     15      0      1   0             0       0  is_stmt
-CHECK: 0x0000000100000f72     20      0      1   0             0       0  is_stmt
-CHECK: 0x0000000100000f89     20      0      1   0             0       0  is_stmt end_sequence
-
-CHECK: file_names[  1]:
-CHECK-NEXT: name: "basic3.c"
-CHECK-NEXT: dir_index: 0
-CHECK: 0x0000000100000f90     16      0      1   0             0       0  is_stmt
-CHECK: 0x0000000100000f94     12      0      1   0             0       0  is_stmt prologue_end
-CHECK: 0x0000000100000f9a     17      0      1   0             0       0  is_stmt
-CHECK: 0x0000000100000f9f     12      0      1   0             0       0  is_stmt
-CHECK: 0x0000000100000fa7     20      0      1   0             0       0  is_stmt
-CHECK: 0x0000000100000fa9     19      0      1   0             0       0  is_stmt
-CHECK: 0x0000000100000fb2     20      0      1   0             0       0  is_stmt
-CHECK: 0x0000000100000fb4     20      0      1   0             0       0  is_stmt end_sequence
-
-CHECK-NOT: .debug_pubnames contents:
-CHECK-NOT: .debug_pubtypes contents:
diff --git a/llvm/test/tools/dsymutil/X86/DWARFLinkerParallel/basic-with-libfat-test.test b/llvm/test/tools/dsymutil/X86/DWARFLinkerParallel/basic-with-libfat-test.test
deleted file mode 100644
--- a/llvm/test/tools/dsymutil/X86/DWARFLinkerParallel/basic-with-libfat-test.test
+++ /dev/null
@@ -1,12 +0,0 @@
-RUN: cat %p/../../Inputs/basic-with-libfat-test.macho.x86_64 > %t1
-RUN: dsymutil --linker llvm -f -oso-prepend-path=%p/../.. %t1
-RUN: llvm-dwarfdump %t1.dwarf | FileCheck %s
-
-The test binary was created by force-linking the libfat-test.a fat archive
-with the basic linking test archive, like so:
-$ clang -all_load libfat-test.a libbasic.a basic1.macho.x86_64.o -Wl,-dead_strip -u _x86_64_var
-
-CHECK: DW_AT_name{{.*}}"x86_64_var"
-CHECK: DW_AT_name{{.*}}"basic2.c"
-CHECK: DW_AT_name{{.*}}"basic3.c"
-CHECK: DW_AT_name{{.*}}"basic1.c"
diff --git a/llvm/test/tools/dsymutil/X86/DWARFLinkerParallel/multiple-inputs.test b/llvm/test/tools/dsymutil/X86/DWARFLinkerParallel/multiple-inputs.test
deleted file mode 100644
--- a/llvm/test/tools/dsymutil/X86/DWARFLinkerParallel/multiple-inputs.test
+++ /dev/null
@@ -1,30 +0,0 @@
-RUN: rm -rf %t
-RUN: mkdir -p %t
-
-RUN: cat %p/../../Inputs/basic.macho.x86_64 > %t/basic.macho.x86_64
-RUN: cat %p/../../Inputs/basic-archive.macho.x86_64 > %t/basic-archive.macho.x86_64
-RUN: cat %p/../../Inputs/basic-lto.macho.x86_64 > %t/basic-lto.macho.x86_64
-RUN: cat %p/../../Inputs/basic-lto-dw4.macho.x86_64 > %t/basic-lto-dw4.macho.x86_64
-
-# Multiple inputs in flat mode
-RUN: dsymutil --linker llvm -f -oso-prepend-path=%p/../.. %t/basic.macho.x86_64 %t/basic-archive.macho.x86_64 %t/basic-lto.macho.x86_64 %t/basic-lto-dw4.macho.x86_64
-RUN: llvm-dwarfdump -a %t/basic.macho.x86_64.dwarf \
-RUN: | FileCheck %S/basic-linking-x86.test --check-prefixes=CHECK,BASIC
-RUN: llvm-dwarfdump -a %t/basic-archive.macho.x86_64.dwarf \
-RUN: | FileCheck %S/basic-linking-x86.test --check-prefixes=CHECK,ARCHIVE
-RUN: llvm-dwarfdump -a %t/basic-lto.macho.x86_64.dwarf | FileCheck %S/basic-lto-linking-x86.test
-RUN: llvm-dwarfdump -a %t/basic-lto-dw4.macho.x86_64.dwarf | FileCheck %S/basic-lto-dw4-linking-x86.test
-
-# Multiple inputs that end up in the same named bundle
-RUN: dsymutil --linker llvm -oso-prepend-path=%p/../.. %t/basic.macho.x86_64 %t/basic-archive.macho.x86_64 %t/basic-lto.macho.x86_64 %t/basic-lto-dw4.macho.x86_64 -o %t.dSYM
-RUN: llvm-dwarfdump -a %t.dSYM/Contents/Resources/DWARF/basic.macho.x86_64 \
-RUN: | FileCheck %S/basic-linking-x86.test --check-prefixes=CHECK,BASIC
-RUN: llvm-dwarfdump -a %t.dSYM/Contents/Resources/DWARF/basic-archive.macho.x86_64 \
-RUN: | FileCheck %S/basic-linking-x86.test --check-prefixes=CHECK,ARCHIVE
-RUN: llvm-dwarfdump -a %t.dSYM/Contents/Resources/DWARF/basic-lto.macho.x86_64 | FileCheck %S/basic-lto-linking-x86.test
-RUN: llvm-dwarfdump -a %t.dSYM/Contents/Resources/DWARF/basic-lto-dw4.macho.x86_64 | FileCheck %S/basic-lto-dw4-linking-x86.test
-
-# Multiple inputs in a named bundle in flat mode... impossible.
-RUN: not dsymutil --linker llvm -f -oso-prepend-path=%p/../.. %t/basic.macho.x86_64 %t/basic-archive.macho.x86_64 %t/basic-lto.macho.x86_64 %t/basic-lto-dw4.macho.x86_64 -o %t.dSYM 2>&1 | FileCheck %s
-
-CHECK: error: cannot use -o with multiple inputs in flat mode
diff --git a/llvm/test/tools/dsymutil/X86/basic-linking-bundle.test b/llvm/test/tools/dsymutil/X86/basic-linking-bundle.test
--- a/llvm/test/tools/dsymutil/X86/basic-linking-bundle.test
+++ b/llvm/test/tools/dsymutil/X86/basic-linking-bundle.test
@@ -19,6 +19,31 @@
 RUN: llvm-dwarfdump -a %t/dsymdest/basic.macho.x86_64.dSYM/Contents/Resources/DWARF/basic.macho.x86_64 | FileCheck %S/basic-linking-x86.test
 RUN: FileCheck %s --input-file %t/dsymdest/basic.macho.x86_64.dSYM/Contents/Info.plist
 
+### --------------------------------------------
+### Repeat the steps for --linker llvm
+
+RUN: rm -rf %t
+RUN: mkdir -p %t/dsymdest
+RUN: cat %p/../Inputs/basic.macho.x86_64 > %t/basic.macho.x86_64
+
+RUN: dsymutil --linker llvm -accelerator=Pub -oso-prepend-path=%p/.. %t/basic.macho.x86_64
+
+Check that the object file in the bundle exists and is sane:
+RUN: llvm-dwarfdump -a %t/basic.macho.x86_64.dSYM/Contents/Resources/DWARF/basic.macho.x86_64 | FileCheck %S/basic-linking-x86.test
+
+Check that we don't create an empty Remarks directory if there are no remarks.
+RUN: not ls %t/basic.macho.x86_64.dSYM/Contents/Resources/Remarks
+
+Check that llvm-dwarfdump -a recognizes the bundle as a dSYM:
+RUN: llvm-dwarfdump -a %t/basic.macho.x86_64.dSYM | FileCheck %S/basic-linking-x86.test
+
+RUN: FileCheck %s --input-file %t/basic.macho.x86_64.dSYM/Contents/Info.plist
+
+RUN: dsymutil --linker llvm -oso-prepend-path=%p/.. %t/basic.macho.x86_64 -o %t/dsymdest/basic.macho.x86_64.dSYM
+RUN: llvm-dwarfdump -a %t/dsymdest/basic.macho.x86_64.dSYM/Contents/Resources/DWARF/basic.macho.x86_64 | FileCheck %S/basic-linking-x86.test
+RUN: FileCheck %s --input-file %t/dsymdest/basic.macho.x86_64.dSYM/Contents/Info.plist
+
+
 CHECK: <?xml version="1.0" encoding="UTF-8"?>
 CHECK-NEXT: <!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 CHECK-NEXT: <plist version="1.0">
diff --git a/llvm/test/tools/dsymutil/X86/basic-linking-x86.test b/llvm/test/tools/dsymutil/X86/basic-linking-x86.test
--- a/llvm/test/tools/dsymutil/X86/basic-linking-x86.test
+++ b/llvm/test/tools/dsymutil/X86/basic-linking-x86.test
@@ -8,6 +8,19 @@
 RUN: dsymutil -accelerator=Pub -dump-debug-map -oso-prepend-path=%p/.. %p/../Inputs/basic.macho.x86_64 | dsymutil -accelerator=Pub -f -y -o - - | llvm-dwarfdump -a - | FileCheck %s --check-prefixes=CHECK,BASIC,PUB
 RUN: dsymutil -accelerator=Pub -dump-debug-map -oso-prepend-path=%p/.. %p/../Inputs/basic-archive.macho.x86_64 | dsymutil -accelerator=Pub -f -o - -y - | llvm-dwarfdump -a - | FileCheck %s --check-prefixes=CHECK,ARCHIVE,PUB
 
+### ---------------------------------------
+### Repeat the same steps for --linker llvm
+
+RUN: cat %p/../Inputs/basic.macho.x86_64 > %t1
+RUN: dsymutil --linker llvm -accelerator=Pub -f -oso-prepend-path=%p/.. %t1
+RUN: llvm-dwarfdump -a %t1.dwarf | FileCheck %s
+RUN: dsymutil --linker llvm  -accelerator=Pub -f -o %t2 -oso-prepend-path=%p/.. %p/../Inputs/basic.macho.x86_64
+RUN: llvm-dwarfdump -a %t2 | FileCheck %s
+RUN: dsymutil --linker llvm  -accelerator=Pub -f -o - -oso-prepend-path=%p/.. %p/../Inputs/basic.macho.x86_64 | llvm-dwarfdump -a - | FileCheck %s --check-prefixes=CHECK,BASIC,PUB
+RUN: dsymutil --linker llvm -accelerator=Pub -f -o - -oso-prepend-path=%p/.. %p/../Inputs/basic-archive.macho.x86_64 | llvm-dwarfdump -a - | FileCheck %s --check-prefixes=CHECK,ARCHIVE,PUB
+RUN: dsymutil --linker llvm -accelerator=Pub -dump-debug-map -oso-prepend-path=%p/.. %p/../Inputs/basic.macho.x86_64 | dsymutil -accelerator=Pub -f -y -o - - | llvm-dwarfdump -a - | FileCheck %s --check-prefixes=CHECK,BASIC,PUB
+RUN: dsymutil --linker llvm -accelerator=Pub -dump-debug-map -oso-prepend-path=%p/.. %p/../Inputs/basic-archive.macho.x86_64 | dsymutil -accelerator=Pub -f -o - -y - | llvm-dwarfdump -a - | FileCheck %s --check-prefixes=CHECK,ARCHIVE,PUB
+
 CHECK: file format Mach-O 64-bit x86-64
 
 CHECK: debug_info contents
diff --git a/llvm/test/tools/dsymutil/X86/basic-lto-dw4-linking-x86.test b/llvm/test/tools/dsymutil/X86/basic-lto-dw4-linking-x86.test
--- a/llvm/test/tools/dsymutil/X86/basic-lto-dw4-linking-x86.test
+++ b/llvm/test/tools/dsymutil/X86/basic-lto-dw4-linking-x86.test
@@ -1,5 +1,9 @@
 RUN: dsymutil -f -o - -oso-prepend-path=%p/.. %p/../Inputs/basic-lto-dw4.macho.x86_64 | llvm-dwarfdump -a - | FileCheck %s
 
+RUN: dsymutil --linker llvm -f -o - -oso-prepend-path=%p/.. \
+RUN:   %p/../Inputs/basic-lto-dw4.macho.x86_64 | llvm-dwarfdump -a - \
+RUN:   | FileCheck %s
+
 CHECK: file format Mach-O 64-bit x86-64
 
 CHECK: debug_info contents
diff --git a/llvm/test/tools/dsymutil/X86/basic-lto-linking-x86.test b/llvm/test/tools/dsymutil/X86/basic-lto-linking-x86.test
--- a/llvm/test/tools/dsymutil/X86/basic-lto-linking-x86.test
+++ b/llvm/test/tools/dsymutil/X86/basic-lto-linking-x86.test
@@ -1,6 +1,12 @@
 RUN: dsymutil -f -o - -oso-prepend-path=%p/.. %p/../Inputs/basic-lto.macho.x86_64 | llvm-dwarfdump -a - | FileCheck %s
 RUN: dsymutil -oso-prepend-path=%p/.. -dump-debug-map %p/../Inputs/basic-lto.macho.x86_64 | dsymutil -f -o - -y - | llvm-dwarfdump -a - | FileCheck %s
 
+RUN: dsymutil --linker llvm -f -o - -oso-prepend-path=%p/.. \
+RUN:   %p/../Inputs/basic-lto.macho.x86_64 | llvm-dwarfdump -a - | FileCheck %s
+RUN: dsymutil --linker llvm -oso-prepend-path=%p/.. -dump-debug-map \
+RUN:   %p/../Inputs/basic-lto.macho.x86_64 | dsymutil -f -o - -y - | \
+RUN:   llvm-dwarfdump -a - | FileCheck %s
+
 CHECK: file format Mach-O 64-bit x86-64
 
 CHECK: debug_info contents
diff --git a/llvm/test/tools/dsymutil/X86/basic-with-libfat-test.test b/llvm/test/tools/dsymutil/X86/basic-with-libfat-test.test
--- a/llvm/test/tools/dsymutil/X86/basic-with-libfat-test.test
+++ b/llvm/test/tools/dsymutil/X86/basic-with-libfat-test.test
@@ -1,4 +1,8 @@
-RUN: dsymutil -f -o - -oso-prepend-path=%p/.. %p/../Inputs/basic-with-libfat-test.macho.x86_64 | llvm-dwarfdump - | FileCheck %s 
+RUN: dsymutil -f -o - -oso-prepend-path=%p/.. %p/../Inputs/basic-with-libfat-test.macho.x86_64 | llvm-dwarfdump - | FileCheck %s
+
+RUN: dsymutil --linker llvm -f -o - -oso-prepend-path=%p/.. \
+RUN:   %p/../Inputs/basic-with-libfat-test.macho.x86_64 | llvm-dwarfdump - \
+RUN:   | FileCheck %s
 
 The test binary was created by force-linking the libfat-test.a fat archive
 with the basic linking test archive, like so:
diff --git a/llvm/test/tools/dsymutil/X86/multiple-inputs.test b/llvm/test/tools/dsymutil/X86/multiple-inputs.test
--- a/llvm/test/tools/dsymutil/X86/multiple-inputs.test
+++ b/llvm/test/tools/dsymutil/X86/multiple-inputs.test
@@ -27,4 +27,43 @@
 # Multiple inputs in a named bundle in flat mode... impossible.
 RUN: not dsymutil -f -oso-prepend-path=%p/.. %t/basic.macho.x86_64 %t/basic-archive.macho.x86_64 %t/basic-lto.macho.x86_64 %t/basic-lto-dw4.macho.x86_64 -o %t.dSYM 2>&1 | FileCheck %s
 
+## ---------------------------------------
+## Repeat the same steps for --linker llvm
+
+RUN: rm -rf %t
+RUN: mkdir -p %t
+
+RUN: cat %p/../Inputs/basic.macho.x86_64 > %t/basic.macho.x86_64
+RUN: cat %p/../Inputs/basic-archive.macho.x86_64 > %t/basic-archive.macho.x86_64
+RUN: cat %p/../Inputs/basic-lto.macho.x86_64 > %t/basic-lto.macho.x86_64
+RUN: cat %p/../Inputs/basic-lto-dw4.macho.x86_64 > %t/basic-lto-dw4.macho.x86_64
+
+# Multiple inputs in flat mode
+RUN: dsymutil --linker llvm -f -oso-prepend-path=%p/.. \
+RUN:   %t/basic.macho.x86_64 %t/basic-archive.macho.x86_64 \
+RUN:   %t/basic-lto.macho.x86_64 %t/basic-lto-dw4.macho.x86_64
+RUN: llvm-dwarfdump -a %t/basic.macho.x86_64.dwarf \
+RUN: | FileCheck %S/basic-linking-x86.test --check-prefixes=CHECK,BASIC
+RUN: llvm-dwarfdump -a %t/basic-archive.macho.x86_64.dwarf \
+RUN: | FileCheck %S/basic-linking-x86.test --check-prefixes=CHECK,ARCHIVE
+RUN: llvm-dwarfdump -a %t/basic-lto.macho.x86_64.dwarf | FileCheck %S/basic-lto-linking-x86.test
+RUN: llvm-dwarfdump -a %t/basic-lto-dw4.macho.x86_64.dwarf | FileCheck %S/basic-lto-dw4-linking-x86.test
+
+# Multiple inputs that end up in the same named bundle
+RUN: dsymutil --linker llvm -oso-prepend-path=%p/.. %t/basic.macho.x86_64 \
+RUN:   %t/basic-archive.macho.x86_64 %t/basic-lto.macho.x86_64 \
+RUN:   %t/basic-lto-dw4.macho.x86_64 -o %t.dSYM
+RUN: llvm-dwarfdump -a %t.dSYM/Contents/Resources/DWARF/basic.macho.x86_64 \
+RUN: | FileCheck %S/basic-linking-x86.test --check-prefixes=CHECK,BASIC
+RUN: llvm-dwarfdump -a %t.dSYM/Contents/Resources/DWARF/basic-archive.macho.x86_64 \
+RUN: | FileCheck %S/basic-linking-x86.test --check-prefixes=CHECK,ARCHIVE
+RUN: llvm-dwarfdump -a %t.dSYM/Contents/Resources/DWARF/basic-lto.macho.x86_64 | FileCheck %S/basic-lto-linking-x86.test
+RUN: llvm-dwarfdump -a %t.dSYM/Contents/Resources/DWARF/basic-lto-dw4.macho.x86_64 | FileCheck %S/basic-lto-dw4-linking-x86.test
+
+# Multiple inputs in a named bundle in flat mode... impossible.
+RUN: not dsymutil --linker llvm -f -oso-prepend-path=%p/.. \
+RUN:   %t/basic.macho.x86_64 %t/basic-archive.macho.x86_64 \
+RUN:   %t/basic-lto.macho.x86_64 %t/basic-lto-dw4.macho.x86_64 \
+RUN:   -o %t.dSYM 2>&1 | FileCheck %s
+
 CHECK: error: cannot use -o with multiple inputs in flat mode
diff --git a/llvm/test/tools/llvm-dwarfutil/ELF/X86/accelerator-dwarf4.test b/llvm/test/tools/llvm-dwarfutil/ELF/X86/accelerator-dwarf4.test
--- a/llvm/test/tools/llvm-dwarfutil/ELF/X86/accelerator-dwarf4.test
+++ b/llvm/test/tools/llvm-dwarfutil/ELF/X86/accelerator-dwarf4.test
@@ -11,6 +11,16 @@
 # RUN: llvm-dwarfutil --garbage-collection --build-accelerator=DWARF %t.o %t1
 # RUN: llvm-dwarfdump --verify %t1 | FileCheck %s --check-prefix=VERIFY
 # RUN: llvm-dwarfdump -a %t1 | FileCheck %s
+#
+# RUN: llvm-dwarfutil --linker llvm --no-garbage-collection \
+# RUN:   --build-accelerator=DWARF %t.o %t1
+# RUN: llvm-dwarfdump --verify %t1 | FileCheck %s --check-prefix=VERIFY
+# RUN: llvm-dwarfdump -a %t1 | FileCheck %s
+
+# RUN: llvm-dwarfutil --linker llvm --garbage-collection \
+# RUN:   --build-accelerator=DWARF %t.o %t1
+# RUN: llvm-dwarfdump --verify %t1 | FileCheck %s --check-prefix=VERIFY
+# RUN: llvm-dwarfdump -a %t1 | FileCheck %s
 
 # VERIFY: No errors
 
diff --git a/llvm/test/tools/llvm-dwarfutil/ELF/X86/accelerator-dwarf5.test b/llvm/test/tools/llvm-dwarfutil/ELF/X86/accelerator-dwarf5.test
--- a/llvm/test/tools/llvm-dwarfutil/ELF/X86/accelerator-dwarf5.test
+++ b/llvm/test/tools/llvm-dwarfutil/ELF/X86/accelerator-dwarf5.test
@@ -9,6 +9,16 @@
 # RUN: llvm-dwarfutil --garbage-collection --build-accelerator=DWARF %p/Inputs/dwarf5.out %t1
 # RUN: llvm-dwarfdump --verify %t1 | FileCheck %s --check-prefix=VERIFY
 # RUN: llvm-dwarfdump -a %t1 | FileCheck %s
+#
+# RUN: llvm-dwarfutil --linker llvm --no-garbage-collection \
+# RUN:   --build-accelerator=DWARF %p/Inputs/dwarf5.out %t1
+# RUN: llvm-dwarfdump --verify %t1 | FileCheck %s --check-prefix=VERIFY
+# RUN: llvm-dwarfdump -a %t1 | FileCheck %s
+
+# RUN: llvm-dwarfutil --linker llvm --garbage-collection \
+# RUN:   --build-accelerator=DWARF %p/Inputs/dwarf5.out %t1
+# RUN: llvm-dwarfdump --verify %t1 | FileCheck %s --check-prefix=VERIFY
+# RUN: llvm-dwarfdump -a %t1 | FileCheck %s
 
 # VERIFY: No errors