dwarf2out.c (reference_to_unused, [...]): Avoid creating of new varool nodes.

	* dwarf2out.c (reference_to_unused,
	premark_types_used_by_global_vars_helper): Avoid creating of new
	varool nodes.

From-SVN: r160052

gcc/ChangeLog

 2010-05-30  Jan Hubicka  <jh@suse.cz>
 
+	* dwarf2out.c (reference_to_unused,
+	premark_types_used_by_global_vars_helper): Avoid creating of new
+	varool nodes.
+
+2010-05-30  Jan Hubicka  <jh@suse.cz>
+
 	* cgraph.h (cgraph_node_cannot_return,
 	cgraph_edge_cannot_lead_to_return): New functions.
 	* cgraph.c (cgraph_node_cannot_return,

gcc/dwarf2out.c

@@ -15938,8 +15938,8 @@ reference_to_unused (tree * tp, int * walk_subtrees,
     return *tp;
   else if (TREE_CODE (*tp) == VAR_DECL)
     {
-      struct varpool_node *node = varpool_node (*tp);
-      if (!node->needed)
+      struct varpool_node *node = varpool_get_node (*tp);
+      if (!node || !node->needed)
 	return *tp;
     }
   else if (TREE_CODE (*tp) == FUNCTION_DECL
@@ -18213,8 +18213,8 @@ premark_types_used_by_global_vars_helper (void **slot,
     {
       /* Ask cgraph if the global variable really is to be emitted.
          If yes, then we'll keep the DIE of ENTRY->TYPE.  */
-      struct varpool_node *node = varpool_node (entry->var_decl);
-      if (node->needed)
+      struct varpool_node *node = varpool_get_node (entry->var_decl);
+      if (node && node->needed)
 	{
 	  die->die_perennial_p = 1;
 	  /* Keep the parent DIEs as well.  */