patch that caused regression PR opt/9357

[Janis Johnson]

The regression reported in PR optimization/9357 (which affects GCC 3.3)
showed up with this patch:

Sat Oct 27 12:12:09 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * cfgcleanup.c (merge_blocks_move_predecessor_nojumps,
        merge_blocks_move_successors_nojumps): Set BB_UPDATE_LIFE.
        (merge_blocks): Properly udpate life after making edge nonfallthru.
        * cfgrtl.c (merge_blocks_nomove): Update global_live_at_end.

I used the minimized test case test case and compiler options shown in
the PR.

This information has been added to GNATS.

Janis