add missing ast node for isl 0.15

	* graphite-isl-ast-to-gimple.c (translate_isl_ast): Also handle
	isl_ast_node_mark.

Co-Authored-By: Sebastian Pop <s.pop@samsung.com>

From-SVN: r232652

gcc/ChangeLog

 2016-01-21  Aditya Kumar  <aditya.k7@samsung.com>
 	    Sebastian Pop  <s.pop@samsung.com>
 
+	* graphite-isl-ast-to-gimple.c (translate_isl_ast): Also handle
+	isl_ast_node_mark.
+
+2016-01-21  Aditya Kumar  <aditya.k7@samsung.com>
+	    Sebastian Pop  <s.pop@samsung.com>
+
 	* graphite-poly.c (new_poly_bb): Remove use of PBB_IS_REDUCTION.
 	* graphite.h (struct poly_bb): Remove field is_reduction.
         (PBB_IS_REDUCTION): Remove.

gcc/graphite-isl-ast-to-gimple.c

@@ -1254,6 +1254,16 @@ translate_isl_ast_to_gimple::translate_isl_ast (loop_p context_loop,
       return translate_isl_ast_node_block (context_loop, node,
 					   next_e, ip);
 
+#ifdef HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS
+    case isl_ast_node_mark:
+      {
+	isl_ast_node *n = isl_ast_node_mark_get_node (node);
+	edge e = translate_isl_ast (context_loop, n, next_e, ip);
+	isl_ast_node_free (n);
+	return e;
+      }
+#endif
+
     default:
       gcc_unreachable ();
     }