* except.c (reachable_handlers): Step out one level from a RESX.

        * except.c (struct eh_region): Rename 'last' to 'resume'.
        (mark_eh_region, duplicate_eh_region_1): Adjust.
        (expand_eh_region_end_cleanup): Remember the jump, not the barrier.
        (build_post_landing_pads): Likewise.
        (expand_end_catch, expand_eh_region_end_allowed): Don't set it.
        (expand_eh_region_end_must_not_throw): Likewise.
        (connect_post_landing_pads): Thread (only) regions with non-deleted
        resume insns.

        * except.c (expand_eh_region_end_cleanup): Save the EH return data
        registers around the cleanup.
        (get_exception_filter): New fn.
        (finish_eh_generation): Use it.

From-SVN: r41528