CodeGen: factor out swifterror value tracking.

llvm-svn: 361607
diff --git a/llvm/lib/CodeGen/CMakeLists.txt b/llvm/lib/CodeGen/CMakeLists.txt
index e76f9f8..fedf042 100644
--- a/llvm/lib/CodeGen/CMakeLists.txt
+++ b/llvm/lib/CodeGen/CMakeLists.txt
@@ -143,6 +143,7 @@
   StackMaps.cpp
   StackProtector.cpp
   StackSlotColoring.cpp
+  SwiftErrorValueTracking.cpp
   TailDuplication.cpp
   TailDuplicator.cpp
   TargetFrameLoweringImpl.cpp