haifa-sched.c (find_post_sched_live): Use EXECUTE_IF_SET_IN_REG_SET instead of calling REGNO_REG_SET_P for each pseudo.
* haifa-sched.c (find_post_sched_live): Use EXECUTE_IF_SET_IN_REG_SET
instead of calling REGNO_REG_SET_P for each pseudo.
(update_reg_usage): Likewise.
(compute_block_backward)dependences): Do not call "free_list" for
an empty list.
Improves compile times by about 7% on average on my PAs.
From-SVN: r18835
