Index: opts.c
===================================================================
--- opts.c	(revision 162966)
+++ opts.c	(working copy)
@@ -781,6 +781,9 @@
 
   /* -O2 optimizations.  */
   opt2 = (optimize >= 2);
+#ifdef HAVE_cloog
+  flag_graphite_identity = opt2;
+#endif
   flag_inline_small_functions = opt2;
   flag_indirect_inlining = opt2;
   flag_partial_inlining = opt2;