tree-ssa-loop-ivopts.c (relate_compare_use_with_all_cands): Handle boundary case…

tree-ssa-loop-ivopts.c (relate_compare_use_with_all_cands): Handle boundary case for the last candidate.

	* tree-ssa-loop-ivopts.c (relate_compare_use_with_all_cands): Handle
	boundary case for the last candidate.

From-SVN: r250960

gcc/ChangeLog

 2017-08-08  Bin Cheng  <bin.cheng@arm.com>
 
+	* tree-ssa-loop-ivopts.c (relate_compare_use_with_all_cands): Handle
+	boundary case for the last candidate.
+
+2017-08-08  Bin Cheng  <bin.cheng@arm.com>
+
 	* doc/invoke.texi: Document -ftree-loop-distribution for O3.
 	* opts.c (default_options_table): Add OPT_ftree_loop_distribution.
 

gcc/tree-ssa-loop-ivopts.c

@@ -5284,13 +5284,13 @@ set_autoinc_for_original_candidates (struct ivopts_data *data)
 static void
 relate_compare_use_with_all_cands (struct ivopts_data *data)
 {
-  unsigned i, max_id = data->vcands.length () - 1;
+  unsigned i, count = data->vcands.length ();
   for (i = 0; i < data->vgroups.length (); i++)
     {
       struct iv_group *group = data->vgroups[i];
 
       if (group->type == USE_COMPARE)
-	bitmap_set_range (group->related_cands, 0, max_id);
+	bitmap_set_range (group->related_cands, 0, count);
     }
 }