Re: MacIntel apps behaves weirdly when compiled with -02 not -01 - Almost solved(auto-vectorization issue)
Re: MacIntel apps behaves weirdly when compiled with -02 not -01 - Almost solved(auto-vectorization issue)
- Subject: Re: MacIntel apps behaves weirdly when compiled with -02 not -01 - Almost solved(auto-vectorization issue)
- From: Olivier Tristan <email@hidden>
- Date: Fri, 13 Jan 2006 20:13:21 +0100
On 1/13/06, Eric Albert <email@hidden> wrote:
> The issue Arvan mentions is known and not yet fixed. I'm a little
> surprised that -ftree-vectorize is on by default at -O2, since the man
> page doesn't mention that. Can you confirm that and, if it's true,
> file a bug report?
>
> By the way, we recommend using -Os rather than -O2 or -O3. I'd suggest
> trying that instead.
Hi,
I'm now off fo vacation and no more have a mac.
But as far as I remember this is what is written as description in
xcode UI in project properties when you select the auto-vectorize
option. Can someone confirm this ?
Os do not remove some optims as written in the doc ?
I don't reallly care if the binary is 10% bigger. Only CPU usage is
important in audio apps :)
Regards,
--
Olivier Tristan
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