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Re: Patch fixing 3.3 bug 9745 / 10021
- From: Mark Mitchell <mark at codesourcery dot com>
- To: David Edelsohn <dje at watson dot ibm dot com>
- Cc: Marcus Meissner <meissner at suse dot de>, gcc at gcc dot gnu dot org, wilson at tuliptree dot org
- Date: 02 Jul 2003 08:39:03 -0700
- Subject: Re: Patch fixing 3.3 bug 9745 / 10021
- References: <200307021453.KAA24884@makai.watson.ibm.com>
On Wed, 2003-07-02 at 07:53, David Edelsohn wrote:
> >>>>> Marcus Meissner writes:
>
> Marcus> Bugzilla entry 10021 contains a patch fixing the 'critical' 3.3 regression
> Marcus> in bug 9745 from Jim Wilson.
>
> Marcus> Can someone please review the patch for inclusion into the 3.3 branch
> Marcus> (and 3.4)?
>
> Marcus> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=10021
>
> Marcus> Patch is in attached file:
>
> Marcus> http://gcc.gnu.org/bugzilla/attachment.cgi?id=4306&action=view
>
> If the patch goes in, I will immediately open a critical
> performance regression bug against 3.3 and 3.4. As with my earlier patch
> for PR 9475, the proposed patch is too conservative and disables too much
> alias-based optimizations.
It's up to you and Geoff (as RS6000 maintainers) to decide whether the
RS6000 port is better off generating bad code or slow code.
We are going to be stuck in one state or the other until someone is
willing to invest some serious effort in this problem.
--
Mark Mitchell
CodeSourcery, LLC
mark@codesourcery.com