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-rw-r--r--gcc/builtins.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c
index 1592810..2ff1a8c 100644
--- a/gcc/builtins.c
+++ b/gcc/builtins.c
@@ -17,6 +17,10 @@ You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
+/* Legacy warning! Please add no further builtin simplifications here
+ (apart from pure constant folding) - builtin simplifications should go
+ to match.pd or gimple-fold.c instead. */
+
#include "config.h"
#include "system.h"
#include "coretypes.h"