tree-ssa-threadedge.c (thread_across_edge): Use foo.last () rather than…

tree-ssa-threadedge.c (thread_across_edge): Use foo.last () rather than foo[foo.length () - 1] to access last member in a vec.

        * tree-ssa-threadedge.c (thread_across_edge): Use foo.last () rather
        than foo[foo.length () - 1] to access last member in a vec.
        * tree-ssa-threadupdate.c (register_jump_thread): Similarly.

From-SVN: r202892

gcc/ChangeLog

+2013-09-25  Jeff Law  <law@redhat.com>
+
+	* tree-ssa-threadedge.c (thread_across_edge): Use foo.last () rather
+	than foo[foo.length () - 1] to access last member in a vec.
+	* tree-ssa-threadupdate.c (register_jump_thread): Similarly.
+
 2013-09-25  Richard Biener  <rguenther@suse.de>
 
 	PR middle-end/58521

gcc/tree-ssa-threadedge.c

@@ -947,8 +947,7 @@ thread_across_edge (gimple dummy_cond,
 	    }
 
 	  remove_temporary_equivalences (stack);
-	  propagate_threaded_block_debug_into (path[path.length () - 1]->dest,
-					       e->dest);
+	  propagate_threaded_block_debug_into (path.last ()->dest, e->dest);
 	  register_jump_thread (path, false);
 	  path.release ();
 	  return;
@@ -987,7 +986,7 @@ thread_across_edge (gimple dummy_cond,
 	path.safe_push (taken_edge);
 	found = false;
 	if ((e->flags & EDGE_DFS_BACK) == 0
-	    || ! cond_arg_set_in_bb (path[path.length () - 1], e->dest))
+	    || ! cond_arg_set_in_bb (path.last (), e->dest))
 	  found = thread_around_empty_blocks (taken_edge,
 					      dummy_cond,
 					      handle_dominating_asserts,
@@ -999,7 +998,7 @@ thread_across_edge (gimple dummy_cond,
 	   record the jump threading opportunity.  */
 	if (found)
 	  {
-	    propagate_threaded_block_debug_into (path[path.length () - 1]->dest,
+	    propagate_threaded_block_debug_into (path.last ()->dest,
 						 taken_edge->dest);
 	    register_jump_thread (path, true);
 	  }

gcc/tree-ssa-threadupdate.c

@@ -1401,7 +1401,7 @@ register_jump_thread (vec<edge> path, bool through_joiner)
   if (!through_joiner)
     e3 = NULL;
   else
-    e3 = path[path.length () - 1];
+    e3 = path.last ();
 
   /* This can occur if we're jumping to a constant address or
      or something similar.  Just get out now.  */