diff --git a/llvm/lib/LTO/CMakeLists.txt b/llvm/lib/LTO/CMakeLists.txt
--- a/llvm/lib/LTO/CMakeLists.txt
+++ b/llvm/lib/LTO/CMakeLists.txt
@@ -2,11 +2,12 @@
   Caching.cpp
   LTO.cpp
   LTOBackend.cpp
-  LTOModule.cpp
-  LTOCodeGenerator.cpp
   SummaryBasedOptimizations.cpp
-  UpdateCompilerUsed.cpp
-  ThinLTOCodeGenerator.cpp
+
+  legacy/LTOCodeGenerator.cpp
+  legacy/LTOModule.cpp
+  legacy/ThinLTOCodeGenerator.cpp
+  legacy/UpdateCompilerUsed.cpp
 
   ADDITIONAL_HEADER_DIRS
   ${LLVM_MAIN_INCLUDE_DIR}/llvm/LTO
diff --git a/llvm/lib/LTO/LTOCodeGenerator.cpp b/llvm/lib/LTO/legacy/LTOCodeGenerator.cpp
rename from llvm/lib/LTO/LTOCodeGenerator.cpp
rename to llvm/lib/LTO/legacy/LTOCodeGenerator.cpp
diff --git a/llvm/lib/LTO/LTOModule.cpp b/llvm/lib/LTO/legacy/LTOModule.cpp
rename from llvm/lib/LTO/LTOModule.cpp
rename to llvm/lib/LTO/legacy/LTOModule.cpp
diff --git a/llvm/lib/LTO/ThinLTOCodeGenerator.cpp b/llvm/lib/LTO/legacy/ThinLTOCodeGenerator.cpp
rename from llvm/lib/LTO/ThinLTOCodeGenerator.cpp
rename to llvm/lib/LTO/legacy/ThinLTOCodeGenerator.cpp
diff --git a/llvm/lib/LTO/UpdateCompilerUsed.cpp b/llvm/lib/LTO/legacy/UpdateCompilerUsed.cpp
rename from llvm/lib/LTO/UpdateCompilerUsed.cpp
rename to llvm/lib/LTO/legacy/UpdateCompilerUsed.cpp