re PR lto/41584 (WHOPR doesn't grok empty units)

2010-06-04  Richard Guenther  <rguenther@suse.de>

	PR lto/41584
	* cgraph.h (struct varpool_node): Add lto_file_data field.
	* lto-cgraph.c (input_varpool_node): Initialize it.

	lto/
	* lto.c (lto_1_to_1_map): Use the proper file_data for
	varpool nodes.

From-SVN: r160258

gcc/ChangeLog

+2010-06-04  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/41584
+	* cgraph.h (struct varpool_node): Add lto_file_data field.
+	* lto-cgraph.c (input_varpool_node): Initialize it.
+
 2010-06-04  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/i386/predicates.md (pic_symbolic_operand): Remove predicate.

gcc/cgraph.h

@@ -466,6 +466,8 @@ struct GTY((chain_next ("%h.next"), chain_prev ("%h.prev"))) varpool_node {
   /* Circular list of nodes in the same comdat group if non-NULL.  */
   struct varpool_node *same_comdat_group;
   struct ipa_ref_list ref_list;
+  /* File stream where this node is being written to.  */
+  struct lto_file_decl_data * lto_file_data;
   PTR GTY ((skip)) aux;
   /* Ordering of all cgraph nodes.  */
   int order;

gcc/lto-cgraph.c

@@ -1089,6 +1089,7 @@ input_varpool_node (struct lto_file_decl_data *file_data,
   decl_index = lto_input_uleb128 (ib);
   var_decl = lto_file_decl_data_get_var_decl (file_data, decl_index);
   node = varpool_node (var_decl);
+  node->lto_file_data = file_data;
 
   bp = lto_input_bitpack (ib);
   node->externally_visible = bp_unpack_value (bp, 1);

gcc/lto/ChangeLog

+2010-06-04  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/41584
+	* lto.c (lto_1_to_1_map): Use the proper file_data for
+	varpool nodes.
+
 2010-05-30  Jan Hubicka  <jh@suse.cz>
 
 	* lto.c (promote_var, promote_fn, lto_wpa_write_files): Dump

gcc/lto/lto.c

@@ -599,6 +599,7 @@ lto_1_to_1_map (void)
     {
       if (vnode->alias || !vnode->needed)
 	continue;
+      file_data = vnode->lto_file_data;
       slot = pointer_map_contains (pmap, file_data);
       if (slot)
 	partition = (ltrans_partition) *slot;