diff --git a/lib/AsmParser/.cvsignore b/lib/AsmParser/.cvsignore
new file mode 100644
index 00000000000..7ad122ee358
--- /dev/null
+++ b/lib/AsmParser/.cvsignore
@@ -0,0 +1,2 @@
+Lexer.cpp
+llvmAsmParser.*