diff --git a/lib/CodeGen/CMakeLists.txt b/lib/CodeGen/CMakeLists.txt
index ff917a72f0c..5ba8b3c147a 100644
--- a/lib/CodeGen/CMakeLists.txt
+++ b/lib/CodeGen/CMakeLists.txt
@@ -12,6 +12,7 @@ add_llvm_library(LLVMCodeGen
   IntrinsicLowering.cpp
   LLVMTargetMachine.cpp
   LatencyPriorityQueue.cpp
+  LazyLiveness.cpp
   LiveInterval.cpp
   LiveIntervalAnalysis.cpp
   LiveStackAnalysis.cpp