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Re: Patch fixing 3.3 bug PR 9745 and PR 10021
- From: Michael Matz <matz at suse dot de>
- To: Franz Sirl <Franz dot Sirl-kernel at lauterbach dot com>
- Cc: David Edelsohn <dje at watson dot ibm dot com>,Mark Mitchell <mark at codesourcery dot com>,Marcus Meissner <meissner at suse dot de>, <gcc at gcc dot gnu dot org>,<wilson at tuliptree dot org>, Olaf Hering <olh at suse dot de>
- Date: Wed, 2 Jul 2003 20:17:57 +0200 (CEST)
- Subject: Re: Patch fixing 3.3 bug PR 9745 and PR 10021
Hi,
On Wed, 2 Jul 2003, Franz Sirl wrote:
> compiled correctly, he has to compile with -O1 (this is what Suse does for
> their _whole_ build system now) or -O2 -fno-strict-aliasing anyway.
No, in the packages which bite us we used -fno-strict-aliasing or similar.
And now we have this patch applied to our gcc. If it creates performance
problems, well, so be it for now. It's really sad, but broken code is
unacceptable.
> And certainly this is slower than half-working aliasing, or? BTW, do you
> have any hard numbers on how badly performance is affected (compared to
> 3.2.3 and 3.3)?
This would be interesting indeed, yes.
Ciao,
Michael.