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

From-SVN: r165093

diff --git a/gcc/lto/ChangeLog b/gcc/lto/ChangeLog
index 2bce315..fbe447f 100644 (file)
--- a/gcc/lto/ChangeLog
+++ b/gcc/lto/ChangeLog
@@ -1,3 +1,7 @@
+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.

diff --git a/gcc/lto/lto.c b/gcc/lto/lto.c
index 12fa613..25280a7 100644 (file)
--- a/gcc/lto/lto.c
+++ b/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;