diff --git a/llvm/tools/llvm-objcopy/MachO/MachOLayoutBuilder.cpp b/llvm/tools/llvm-objcopy/MachO/MachOLayoutBuilder.cpp
--- a/llvm/tools/llvm-objcopy/MachO/MachOLayoutBuilder.cpp
+++ b/llvm/tools/llvm-objcopy/MachO/MachOLayoutBuilder.cpp
@@ -249,8 +249,12 @@
   uint64_t StartOfExportTrie =
       StartOfLazyBindingInfo + O.LazyBinds.Opcodes.size();
   uint64_t StartOfFunctionStarts = StartOfExportTrie + O.Exports.Trie.size();
-  uint64_t StartOfDataInCode =
+  uint64_t StartOfExportTrie2 =
       StartOfFunctionStarts + O.FunctionStarts.Data.size();
+  uint64_t StartOfChainedFixups =
+      StartOfExportTrie2 + O.ExportsTrie.Data.size();
+  uint64_t StartOfDataInCode =
+      StartOfChainedFixups + O.ChainedFixups.Data.size();
   uint64_t StartOfLinkerOptimizationHint =
       StartOfDataInCode + O.DataInCode.Data.size();
   uint64_t StartOfSymbols =
@@ -353,6 +357,14 @@
       MLC.linkedit_data_command_data.dataoff = StartOfFunctionStarts;
       MLC.linkedit_data_command_data.datasize = O.FunctionStarts.Data.size();
       break;
+    case MachO::LC_DYLD_CHAINED_FIXUPS:
+      MLC.linkedit_data_command_data.dataoff = StartOfChainedFixups;
+      MLC.linkedit_data_command_data.datasize = O.ChainedFixups.Data.size();
+      break;
+    case MachO::LC_DYLD_EXPORTS_TRIE:
+      MLC.linkedit_data_command_data.dataoff = StartOfExportTrie2;
+      MLC.linkedit_data_command_data.datasize = O.ExportsTrie.Data.size();
+      break;
     case MachO::LC_DYLD_INFO:
     case MachO::LC_DYLD_INFO_ONLY:
       MLC.dyld_info_command_data.rebase_off =
diff --git a/llvm/tools/llvm-objcopy/MachO/MachOReader.h b/llvm/tools/llvm-objcopy/MachO/MachOReader.h
--- a/llvm/tools/llvm-objcopy/MachO/MachOReader.h
+++ b/llvm/tools/llvm-objcopy/MachO/MachOReader.h
@@ -41,6 +41,8 @@
   void readDataInCodeData(Object &O) const;
   void readLinkerOptimizationHint(Object &O) const;
   void readFunctionStartsData(Object &O) const;
+  void readExportsTrie(Object &O) const;
+  void readChainedFixups(Object &O) const;
   void readIndirectSymbolTable(Object &O) const;
   void readSwiftVersion(Object &O) const;
 
diff --git a/llvm/tools/llvm-objcopy/MachO/MachOReader.cpp b/llvm/tools/llvm-objcopy/MachO/MachOReader.cpp
--- a/llvm/tools/llvm-objcopy/MachO/MachOReader.cpp
+++ b/llvm/tools/llvm-objcopy/MachO/MachOReader.cpp
@@ -174,6 +174,12 @@
     case MachO::LC_FUNCTION_STARTS:
       O.FunctionStartsCommandIndex = O.LoadCommands.size();
       break;
+    case MachO::LC_DYLD_EXPORTS_TRIE:
+      O.ExportsTrieCommandIndex = O.LoadCommands.size();
+      break;
+    case MachO::LC_DYLD_CHAINED_FIXUPS:
+      O.ChainedFixupsCommandIndex = O.LoadCommands.size();
+      break;
     }
 #define HANDLE_LOAD_COMMAND(LCName, LCValue, LCStruct)                         \
   case MachO::LCName:                                                          \
@@ -301,6 +307,14 @@
   return readLinkData(O, O.FunctionStartsCommandIndex, O.FunctionStarts);
 }
 
+void MachOReader::readExportsTrie(Object &O) const {
+  return readLinkData(O, O.ExportsTrieCommandIndex, O.ExportsTrie);
+}
+
+void MachOReader::readChainedFixups(Object &O) const {
+  return readLinkData(O, O.ChainedFixupsCommandIndex, O.ChainedFixups);
+}
+
 void MachOReader::readIndirectSymbolTable(Object &O) const {
   MachO::dysymtab_command DySymTab = MachOObj.getDysymtabLoadCommand();
   constexpr uint32_t AbsOrLocalMask =
@@ -352,6 +366,8 @@
   readDataInCodeData(*Obj);
   readLinkerOptimizationHint(*Obj);
   readFunctionStartsData(*Obj);
+  readExportsTrie(*Obj);
+  readChainedFixups(*Obj);
   readIndirectSymbolTable(*Obj);
   readSwiftVersion(*Obj);
   return std::move(Obj);
diff --git a/llvm/tools/llvm-objcopy/MachO/MachOWriter.h b/llvm/tools/llvm-objcopy/MachO/MachOWriter.h
--- a/llvm/tools/llvm-objcopy/MachO/MachOWriter.h
+++ b/llvm/tools/llvm-objcopy/MachO/MachOWriter.h
@@ -50,6 +50,8 @@
   void writeDataInCodeData();
   void writeLinkerOptimizationHint();
   void writeFunctionStartsData();
+  void writeChainedFixupsData();
+  void writeExportsTrieData();
   void writeTail();
 
 public:
diff --git a/llvm/tools/llvm-objcopy/MachO/MachOWriter.cpp b/llvm/tools/llvm-objcopy/MachO/MachOWriter.cpp
--- a/llvm/tools/llvm-objcopy/MachO/MachOWriter.cpp
+++ b/llvm/tools/llvm-objcopy/MachO/MachOWriter.cpp
@@ -133,6 +133,26 @@
                      LinkEditDataCommand.datasize);
   }
 
+  if (O.ChainedFixupsCommandIndex) {
+    const MachO::linkedit_data_command &LinkEditDataCommand =
+        O.LoadCommands[*O.ChainedFixupsCommandIndex]
+            .MachOLoadCommand.linkedit_data_command_data;
+
+    if (LinkEditDataCommand.dataoff)
+      Ends.push_back(LinkEditDataCommand.dataoff +
+                     LinkEditDataCommand.datasize);
+  }
+
+  if (O.ExportsTrieCommandIndex) {
+    const MachO::linkedit_data_command &LinkEditDataCommand =
+        O.LoadCommands[*O.ExportsTrieCommandIndex]
+            .MachOLoadCommand.linkedit_data_command_data;
+
+    if (LinkEditDataCommand.dataoff)
+      Ends.push_back(LinkEditDataCommand.dataoff +
+                     LinkEditDataCommand.datasize);
+  }
+
   // Otherwise, use the last section / reloction.
   for (const LoadCommand &LC : O.LoadCommands)
     for (const std::unique_ptr<Section> &S : LC.Sections) {
@@ -585,6 +605,14 @@
   return writeLinkData(O.FunctionStartsCommandIndex, O.FunctionStarts);
 }
 
+void MachOWriter::writeChainedFixupsData() {
+  return writeLinkData(O.ChainedFixupsCommandIndex, O.ChainedFixups);
+}
+
+void MachOWriter::writeExportsTrieData() {
+  return writeLinkData(O.ExportsTrieCommandIndex, O.ExportsTrie);
+}
+
 void MachOWriter::writeTail() {
   typedef void (MachOWriter::*WriteHandlerType)(void);
   typedef std::pair<uint64_t, WriteHandlerType> WriteOperation;
@@ -670,6 +698,26 @@
                          &MachOWriter::writeFunctionStartsData);
   }
 
+  if (O.ChainedFixupsCommandIndex) {
+    const MachO::linkedit_data_command &LinkEditDataCommand =
+        O.LoadCommands[*O.ChainedFixupsCommandIndex]
+            .MachOLoadCommand.linkedit_data_command_data;
+
+    if (LinkEditDataCommand.dataoff)
+      Queue.emplace_back(LinkEditDataCommand.dataoff,
+                         &MachOWriter::writeChainedFixupsData);
+  }
+
+  if (O.ExportsTrieCommandIndex) {
+    const MachO::linkedit_data_command &LinkEditDataCommand =
+        O.LoadCommands[*O.ExportsTrieCommandIndex]
+            .MachOLoadCommand.linkedit_data_command_data;
+
+    if (LinkEditDataCommand.dataoff)
+      Queue.emplace_back(LinkEditDataCommand.dataoff,
+                         &MachOWriter::writeExportsTrieData);
+  }
+
   llvm::sort(Queue, [](const WriteOperation &LHS, const WriteOperation &RHS) {
     return LHS.first < RHS.first;
   });
diff --git a/llvm/tools/llvm-objcopy/MachO/Object.h b/llvm/tools/llvm-objcopy/MachO/Object.h
--- a/llvm/tools/llvm-objcopy/MachO/Object.h
+++ b/llvm/tools/llvm-objcopy/MachO/Object.h
@@ -315,6 +315,8 @@
   LinkData DataInCode;
   LinkData LinkerOptimizationHint;
   LinkData FunctionStarts;
+  LinkData ExportsTrie;
+  LinkData ChainedFixups;
 
   Optional<uint32_t> SwiftVersion;
 
@@ -332,6 +334,10 @@
   Optional<size_t> LinkerOptimizationHintCommandIndex;
   /// The index LC_FUNCTION_STARTS load comamnd if present.
   Optional<size_t> FunctionStartsCommandIndex;
+  /// The index LC_DYLD_CHAINED_FIXUPS load comamnd if present.
+  Optional<size_t> ChainedFixupsCommandIndex;
+  /// The index LC_DYLD_EXPORTS_TRIE load comamnd if present.
+  Optional<size_t> ExportsTrieCommandIndex;
   /// The index of the LC_SEGMENT or LC_SEGMENT_64 load command
   /// corresponding to the __TEXT segment.
   Optional<size_t> TextSegmentCommandIndex;
diff --git a/llvm/tools/llvm-objcopy/MachO/Object.cpp b/llvm/tools/llvm-objcopy/MachO/Object.cpp
--- a/llvm/tools/llvm-objcopy/MachO/Object.cpp
+++ b/llvm/tools/llvm-objcopy/MachO/Object.cpp
@@ -66,6 +66,12 @@
     case MachO::LC_FUNCTION_STARTS:
       FunctionStartsCommandIndex = Index;
       break;
+    case MachO::LC_DYLD_CHAINED_FIXUPS:
+      ChainedFixupsCommandIndex = Index;
+      break;
+    case MachO::LC_DYLD_EXPORTS_TRIE:
+      ExportsTrieCommandIndex = Index;
+      break;
     }
   }
 }