diff --git a/lib/Target/ARM/CMakeLists.txt b/lib/Target/ARM/CMakeLists.txt
index 632ab953133..4f721f8a3f0 100644
--- a/lib/Target/ARM/CMakeLists.txt
+++ b/lib/Target/ARM/CMakeLists.txt
@@ -43,6 +43,7 @@ add_llvm_target(ARMCodeGen
   ARMSubtarget.cpp
   ARMTargetMachine.cpp
   ARMTargetObjectFile.cpp
+  MLxExpansionPass.cpp
   NEONMoveFix.cpp
   Thumb1InstrInfo.cpp
   Thumb1FrameInfo.cpp