+/* *************************************************************************** */
+/* The 2. heuristic */
+/* *************************************************************************** */
+
+static int default_recursion_weight = 5;
+
+/* The final evaluation of a node. In this function we can
+ adapt the heuristic. Combine execution frequency with
+ recursion depth.
+ @@@ the second version of the heuristic.
+
+ Return 0 if the node is neither in a loop nor in a recursion. */
+double get_irn_final_cost(ir_node *n) {
+ double cost_loop = get_irn_exec_freq(n);
+ double cost_method = get_irg_method_execution_frequency(get_irn_irg(n));
+ int rec_depth = get_irn_recursion_depth(n);
+ double cost_rec = 0;
+
+#if 0
+ if (get_irn_recursion_depth(n) == 0 &&
+ get_irn_loop_depth(n) == 0 &&
+ get_irg_method_loop_depth(get_irn_irg(n)) == 0)
+ return 0;
+#else
+ if (get_weighted_loop_depth(n) == 0) return 0;
+#endif
+
+ if (rec_depth) cost_rec = pow(default_recursion_weight, rec_depth);
+ return cost_loop*(cost_method + cost_rec);