Fix memory leak in loop_vec_info

	* tree-vect-loop-manip.c (vect_create_cond_for_alias_checks):
	Do not release memory for comp_alias_ddrs.
	* tree-vect-loop.c (destroy_loop_vec_info): Release
	the memory for all loop_vec_info.

From-SVN: r230995

gcc/ChangeLog

 2015-11-27  Martin Liska  <mliska@suse.cz>
 
+	* tree-vect-loop-manip.c (vect_create_cond_for_alias_checks):
+	Do not release memory for comp_alias_ddrs.
+	* tree-vect-loop.c (destroy_loop_vec_info): Release
+	the memory for all loop_vec_info.
+
+2015-11-27  Martin Liska  <mliska@suse.cz>
+
 	* ipa-devirt.c (ipa_devirt): Use auto_vec instead
 	of a local-scope vec.
 	(struct final_warning_record): Use auto_vec instead

gcc/tree-vect-loop-manip.c

@@ -2284,8 +2284,6 @@ vect_create_cond_for_alias_checks (loop_vec_info loop_vinfo, tree * cond_expr)
     dump_printf_loc (MSG_NOTE, vect_location,
 		     "created %u versioning for alias checks.\n",
 		     comp_alias_ddrs.length ());
-
-  comp_alias_ddrs.release ();
 }
 
 

gcc/tree-vect-loop.c

@@ -1180,6 +1180,7 @@ destroy_loop_vec_info (loop_vec_info loop_vinfo, bool clean_stmts)
   free_dependence_relations (LOOP_VINFO_DDRS (loop_vinfo));
   LOOP_VINFO_LOOP_NEST (loop_vinfo).release ();
   LOOP_VINFO_MAY_MISALIGN_STMTS (loop_vinfo).release ();
+  LOOP_VINFO_COMP_ALIAS_DDRS (loop_vinfo).release ();
   LOOP_VINFO_MAY_ALIAS_DDRS (loop_vinfo).release ();
   slp_instances = LOOP_VINFO_SLP_INSTANCES (loop_vinfo);
   FOR_EACH_VEC_ELT (slp_instances, j, instance)