Update comment in opts.c.

2019-11-13  Martin Liska  <mliska@suse.cz>

	* opts.c: Update comment about OPT_LEVELS_2_PLUS_SPEED_ONLY.

From-SVN: r278118

gcc/ChangeLog

 2019-11-13  Martin Liska  <mliska@suse.cz>
 
+	* opts.c: Update comment about OPT_LEVELS_2_PLUS_SPEED_ONLY.
+
+2019-11-13  Martin Liska  <mliska@suse.cz>
+
 	* tree-streamer-in.c (lto_input_ts_function_decl_tree_pointers):
 	Remove call to finalize_options_struct.
 

gcc/opts.c

@@ -508,7 +508,7 @@ static const struct default_options default_options_table[] =
     { OPT_LEVELS_2_PLUS, OPT_fvect_cost_model_, NULL, VECT_COST_MODEL_CHEAP },
     { OPT_LEVELS_2_PLUS, OPT_finline_functions, NULL, 1 },
 
-    /* -O2 and -Os optimizations.  */
+    /* -O2 and above optimizations, but not -Os or -Og.  */
     { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_falign_functions, NULL, 1 },
     { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_falign_jumps, NULL, 1 },
     { OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_falign_labels, NULL, 1 },