re PR middle-end/56461 (GCC is leaking lots of memory)

	PR middle-end/56461
	* tree-vect-loop.c (vectorizable_reduction): Release vect_defs
	vector.

From-SVN: r196323

gcc/ChangeLog

 2013-02-27  Jakub Jelinek  <jakub@redhat.com>
 
 	PR middle-end/56461
+	* tree-vect-loop.c (vectorizable_reduction): Release vect_defs
+	vector.
+
+	PR middle-end/56461
 	* ipa-pure-const.c (propagate): Use FOR_EACH_FUNCTION instead of
 	FOR_EACH_DEFINED_FUNCTION when freeing state.
 

gcc/tree-vect-loop.c

@@ -5209,6 +5209,7 @@ vectorizable_reduction (gimple stmt, gimple_stmt_iterator *gsi,
                                     double_reduc, slp_node);
 
   phis.release ();
+  vect_defs.release ();
   vec_oprnds0.release ();
   vec_oprnds1.release ();