lto-cgraph.c (get_alias_symbol): Remove weakref sanity check.

	* lto-cgraph.c (get_alias_symbol): Remove weakref sanity check.
	(input_node, input_varpool_node): Handle correctly external same
	body aliases.
	* ipa.c (symtab_remove_unreachable_nodes): Do not remove external
	nodes at ltrans stage.

From-SVN: r199675

gcc/ChangeLog

 2013-06-04  Jan Hubicka  <jh@suse.cz>
 
+	* lto-cgraph.c (get_alias_symbol): Remove weakref sanity check.
+	(input_node, input_varpool_node): Handle correctly external same
+	body aliases.
+	* ipa.c (symtab_remove_unreachable_nodes): Do not remove external
+	nodes at ltrans stage.
+
+2013-06-04  Jan Hubicka  <jh@suse.cz>
+
 	* ipa-inline.c (update_caller_keys): Fix availability test.
 	(update_callee_keys): Likewise.
 	* symtab.c (symtab_alias_ultimate_target): Make availaiblity logic

gcc/ipa.c

@@ -387,7 +387,11 @@ symtab_remove_unreachable_nodes (bool before_inlining_p, FILE *file)
   for (vnode = varpool_first_variable (); vnode; vnode = vnext)
     {
       vnext = varpool_next_variable (vnode);
-      if (!vnode->symbol.aux)
+      if (!vnode->symbol.aux
+	  /* For can_refer_decl_in_current_unit_p we want to track for
+	     all external variables if they are defined in other partition
+	     or not.  */
+	  && (!flag_ltrans || !DECL_EXTERNAL (vnode->symbol.decl)))
 	{
 	  if (file)
 	    fprintf (file, " %s", varpool_node_name (vnode));

gcc/lto-cgraph.c

@@ -918,7 +918,6 @@ static tree
 get_alias_symbol (tree decl)
 {
   tree alias = lookup_attribute ("alias", DECL_ATTRIBUTES (decl));
-  gcc_assert (lookup_attribute ("weakref", DECL_ATTRIBUTES (decl)));
   return get_identifier (TREE_STRING_POINTER
 			  (TREE_VALUE (TREE_VALUE (alias))));
 }
@@ -1008,7 +1007,8 @@ input_node (struct lto_file_decl_data *file_data,
       node->thunk.virtual_value = virtual_value;
       node->thunk.virtual_offset_p = (type & 4);
     }
-  if (node->symbol.alias && !node->symbol.analyzed)
+  if (node->symbol.alias && !node->symbol.analyzed
+      && lookup_attribute ("weakref", DECL_ATTRIBUTES (node->symbol.decl)))
     node->symbol.alias_target = get_alias_symbol (node->symbol.decl);
   return node;
 }
@@ -1050,7 +1050,8 @@ input_varpool_node (struct lto_file_decl_data *file_data,
       DECL_EXTERNAL (node->symbol.decl) = 1;
       TREE_STATIC (node->symbol.decl) = 0;
     }
-  if (node->symbol.alias && !node->symbol.analyzed)
+  if (node->symbol.alias && !node->symbol.analyzed
+      && lookup_attribute ("weakref", DECL_ATTRIBUTES (node->symbol.decl)))
     node->symbol.alias_target = get_alias_symbol (node->symbol.decl);
   ref = streamer_read_hwi (ib);
   /* Store a reference for now, and fix up later to be a pointer.  */