-/**
- * Computes the costs of a copy according to loop depth
- * @param co The copy opt object.
- * @param pos the argument position of arg in the root arguments
- * @return Must be >= 0 in all cases.
- */
-int co_get_costs_loop_depth(const copy_opt_t *co, ir_node *root, ir_node* arg, int pos);
-
-/**
- * Computes the costs of a copy according to execution frequency
- * @param co The copy opt object.
- * @param pos the argument position of arg in the root arguments
- * @return Must be >= 0 in all cases.
- */
-int co_get_costs_exec_freq(const copy_opt_t *co, ir_node *root, ir_node* arg, int pos);
-
-/**
- * All costs equal 1. Using this will reduce the _number_ of copies.
- * @param co The copy opt object.
- * @return Must be >= 0 in all cases.
- */
-int co_get_costs_all_one(const copy_opt_t *co, ir_node *root, ir_node* arg, int pos);
-