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Re: patch that caused regression PR opt/9357
- From: Andreas Jaeger <aj at suse dot de>
- To: Janis Johnson <janis187 at us dot ibm dot com>
- Cc: gcc at gcc dot gnu dot org, jh at suse dot cz
- Date: Mon, 24 Feb 2003 17:48:43 +0100
- Subject: Re: patch that caused regression PR opt/9357
- References: <20030224084855.A1596@us.ibm.com>
Janis Johnson <janis187 at us dot ibm dot com> writes:
> The regression reported in PR optimization/9357 (which affects GCC 3.3)
As just mentioned on gcc-bugs: The problem is -fssa and this is not
supported yet AFAIK. I suspect that Honza's patch just revealed
another bug in -fssa.
Shouldn't we disable -fssa for now?
Andreas
> showed up with this patch:
>
> Sat Oct 27 12:12:09 CEST 2001 Jan Hubicka <jh at suse dot 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
>
--
Andreas Jaeger
SuSE Labs aj at suse dot de
private aj at arthur dot inka dot de
http://www.suse.de/~aj