diff --git a/gcc/opts.c b/gcc/opts.c

index 45b12fe..52a42b9 100644

--- a/gcc/opts.c

+++ b/gcc/opts.c

@@ -486,6 +486,7 @@ static const struct default_options default_options_table[] =

     { OPT_LEVELS_2_PLUS, OPT_ftree_tail_merge, NULL, 1 },

     { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_foptimize_strlen, NULL, 1 },

     { OPT_LEVELS_2_PLUS, OPT_fhoist_adjacent_loads, NULL, 1 },

+    { OPT_LEVELS_2_PLUS, OPT_fuse_caller_save, NULL, 1 },

 

     /* -O3 optimizations.  */

     { OPT_LEVELS_3_PLUS, OPT_ftree_loop_distribute_patterns, NULL, 1 },