Update CMake

llvm-svn: 80195
diff --git a/llvm/lib/MC/CMakeLists.txt b/llvm/lib/MC/CMakeLists.txt
index 8075392..ecb8440 100644
--- a/llvm/lib/MC/CMakeLists.txt
+++ b/llvm/lib/MC/CMakeLists.txt
@@ -6,6 +6,7 @@
   MCAsmParser.cpp
   MCAsmStreamer.cpp
   MCAssembler.cpp
+  MCCodeEmitter.cpp
   MCContext.cpp
   MCMachOStreamer.cpp
   MCNullStreamer.cpp