Index: lldb/include/lldb/Symbol/CompileUnit.h
===================================================================
--- lldb/include/lldb/Symbol/CompileUnit.h
+++ lldb/include/lldb/Symbol/CompileUnit.h
@@ -332,6 +332,7 @@
   void SetLineTable(LineTable *line_table);
 
   void SetSupportFiles(const FileSpecList &support_files);
+  void SetSupportFiles(FileSpecList &&support_files);
 
   void SetDebugMacros(const DebugMacrosSP &debug_macros);
 
Index: lldb/source/Symbol/CompileUnit.cpp
===================================================================
--- lldb/source/Symbol/CompileUnit.cpp
+++ lldb/source/Symbol/CompileUnit.cpp
@@ -181,6 +181,10 @@
   m_support_files = support_files;
 }
 
+void CompileUnit::SetSupportFiles(FileSpecList &&support_files) {
+  m_support_files = std::move(support_files);
+}
+
 DebugMacros *CompileUnit::GetDebugMacros() {
   if (m_debug_macros_sp.get() == nullptr) {
     if (m_flags.IsClear(flagsParsedDebugMacros)) {