Hi Vlad, You added code to haifa-sched to allow it to insert NOPs, but insert_schedule_bubbles_p is 0 for all targets. Also, the target hooks TARGET_SCHED_INIT_DFA_BUBBLES, TARGET_SCHED_DFA_BUBBLE are not defined by any target. You merged this code more than two years ago. Do you have plans to start using it, or can I post a patch to remove it? Gr. Steven