Implement -Wno-maybe-uninitialized

[pf3gnuchains/gcc-fork.git] / gcc / opts.c

diff --git a/gcc/opts.c b/gcc/opts.c
index 165d7ec..f00e1b2 100644 (file)
--- a/gcc/opts.c
+++ b/gcc/opts.c
@@ -289,11 +289,6 @@ init_options_struct (struct gcc_options *opts, struct gcc_options *opts_set)
   opts_set->x_param_values = XCNEWVEC (int, num_params);
   init_param_values (opts->x_param_values);
 
-  /* Use priority coloring if cover classes is not defined for the
-     target.  */
-  if (targetm.ira_cover_classes == NULL)
-    opts->x_flag_ira_algorithm = IRA_ALGORITHM_PRIORITY;
-
   /* Initialize whether `char' is signed.  */
   opts->x_flag_signed_char = DEFAULT_SIGNED_CHAR;
   /* Set this to a special "uninitialized" value.  The actual default
@@ -387,7 +382,7 @@ maybe_default_option (struct gcc_options *opts,
                             lang_mask, DK_UNSPECIFIED, loc,
                             handlers, dc);
   else if (default_opt->arg == NULL
-          && !(option->flags & CL_REJECT_NEGATIVE))
+          && !option->cl_reject_negative)
     handle_generated_option (opts, opts_set, default_opt->opt_index,
                             default_opt->arg, !default_opt->value,
                             lang_mask, DK_UNSPECIFIED, loc,
@@ -758,14 +753,6 @@ finish_options (struct gcc_options *opts, struct gcc_options *opts_set,
   if (!opts->x_flag_sel_sched_pipelining)
     opts->x_flag_sel_sched_pipelining_outer_loops = 0;
 
-  if (!targetm.ira_cover_classes
-      && opts->x_flag_ira_algorithm == IRA_ALGORITHM_CB)
-    {
-      inform (loc,
-             "-fira-algorithm=CB does not work on this architecture");
-      opts->x_flag_ira_algorithm = IRA_ALGORITHM_PRIORITY;
-    }
-
   if (opts->x_flag_conserve_stack)
     {
       maybe_set_param_value (PARAM_LARGE_STACK_FRAME, 100,
@@ -1693,6 +1680,11 @@ common_handle_option (struct gcc_options *opts,
       /* No-op. Used by the driver and passed to us because it starts with f.*/
       break;
 
+    case OPT_Wuninitialized:
+      /* Also turn on maybe uninitialized warning.  */
+      warn_maybe_uninitialized = value;
+      break;
+
     default:
       /* If the flag was handled in a standard way, assume the lack of
         processing here is intentional.  */
@@ -1971,6 +1963,9 @@ enable_warning_as_error (const char *arg, int value, unsigned int lang_mask,
       control_warning_option (option_index, (int) kind, value,
                              loc, lang_mask,
                              handlers, opts, opts_set, dc);
+      if (option_index == OPT_Wuninitialized)
+        enable_warning_as_error ("maybe-uninitialized", value, lang_mask,
+                                handlers, opts, opts_set, loc, dc);
     }
   free (new_option);
 }