diff --git a/include/llvm/Support/.cvsignore b/include/llvm/Support/.cvsignore
new file mode 100644
index 00000000000..6e9d64cfc83
--- /dev/null
+++ b/include/llvm/Support/.cvsignore
@@ -0,0 +1,3 @@
+.cvsignore
+DataTypes.h
+ThreadSupport.h