Fix header comment.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@180268 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Headers/xopintrin.h b/lib/Headers/xopintrin.h
index d107be4..9a5824c 100644
--- a/lib/Headers/xopintrin.h
+++ b/lib/Headers/xopintrin.h
@@ -1,4 +1,4 @@
-/*===---- xopintrin.h - FMA4 intrinsics ------------------------------------===
+/*===---- xopintrin.h - XOP intrinsics -------------------------------------===
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -22,7 +22,7 @@
  */
 
 #ifndef __X86INTRIN_H
-#error "Never use <fma4intrin.h> directly; include <x86intrin.h> instead."
+#error "Never use <xopintrin.h> directly; include <x86intrin.h> instead."
 #endif
 
 #ifndef __XOPINTRIN_H