* gcse.c (reg_first_set, reg_last_set): Replace with ...
        (reg_avail_info, current_bb): ... these.
        (oprs_unchanged_p, record_last_reg_set_info): Use them.
        (compute_hash_table): Likewise.

Co-Authored-By: Richard Henderson <rth@redhat.com>

From-SVN: r45213