+ir_op_ops *firm_set_default_operations(unsigned code, ir_op_ops *ops);
+
+int ir_mux_is_abs(const ir_node *sel, const ir_node *mux_true,
+ const ir_node *mux_false);
+
+ir_node *ir_get_abs_op(const ir_node *sel, ir_node *mux_true,
+ ir_node *mux_false);