/* If the node consumes/produces data, it is appended to the schedule
* list, otherwise, it is not put into the list */
if (must_appear_in_schedule(env->selector, env->selector_block_env, irn)) {
/* If the node consumes/produces data, it is appended to the schedule
* list, otherwise, it is not put into the list */
if (must_appear_in_schedule(env->selector, env->selector_block_env, irn)) {