* lto.c (lto_balanced_map): Do not produce empty partitions.

From-SVN: r165093

gcc/lto/ChangeLog

+2010-10-06  Jan Hubicka  <jh@suse.cz>
+
+	* lto.c (lto_balanced_map): Do not produce empty partitions.
+
 2010-10-06  Andi Kleen <ak@linux.intel.com>
 
 	* lto.c (lto_process_name): Add.

gcc/lto/lto.c

@@ -1212,6 +1212,9 @@ lto_balanced_map (void)
 	      undo_partition (partition, best_n_nodes, best_n_varpool_nodes);
 	    }
 	  i = best_i;
+ 	  /* When we are finished, avoid creating empty partition.  */
+	  if (i == n_nodes - 1)
+	    break;
 	  partition = new_partition ("");
 	  last_visited_cgraph_node = 0;
 	  last_visited_varpool_node = 0;