-fuse-caller-save - Enable by default at O2 and higher

2014-05-28  Radovan Obradovic  <robradovic@mips.com>
            Tom de Vries  <tom@codesourcery.com>

	* opts.c (default_options_table): Add OPT_LEVELS_2_PLUS entry with
	OPT_fuse_caller_save.

Co-Authored-By: Tom de Vries <tom@codesourcery.com>

From-SVN: r211008

gcc/ChangeLog

 2014-05-28  Radovan Obradovic  <robradovic@mips.com>
             Tom de Vries  <tom@codesourcery.com>
 
+	* opts.c (default_options_table): Add OPT_LEVELS_2_PLUS entry with
+	OPT_fuse_caller_save.
+
+2014-05-28  Radovan Obradovic  <robradovic@mips.com>
+            Tom de Vries  <tom@codesourcery.com>
+
 	* df-scan.c (df_get_call_refs): Use get_call_reg_set_usage.
 	* caller-save.c (setup_save_areas, save_call_clobbered_regs): Use
 	get_call_reg_set_usage.

gcc/opts.c

@@ -497,6 +497,7 @@ static const struct default_options default_options_table[] =
     { 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_fisolate_erroneous_paths_dereference, 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 },