diff --git a/include/llvm/ADT/.cvsignore b/include/llvm/ADT/.cvsignore
new file mode 100644
index 00000000000..d8a1f753891
--- /dev/null
+++ b/include/llvm/ADT/.cvsignore
@@ -0,0 +1,4 @@
+.cvsignore
+hash_map
+hash_set
+iterator
diff --git a/lib/Target/Skeleton/.cvsignore b/lib/Target/Skeleton/.cvsignore
new file mode 100644
index 00000000000..a3e85fa373f
--- /dev/null
+++ b/lib/Target/Skeleton/.cvsignore
@@ -0,0 +1,2 @@
+.cvsignore
+*.inc
diff --git a/lib/Target/X86/.cvsignore b/lib/Target/X86/.cvsignore
index 2a06e93b553..a3e85fa373f 100644
--- a/lib/Target/X86/.cvsignore
+++ b/lib/Target/X86/.cvsignore
@@ -1 +1,2 @@
+.cvsignore
 *.inc