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Re: C compile time
- From: Dara Hazeghi <dhazeghi at yahoo dot com>
- To: Jan Hubicka <jh at suse dot cz>
- Cc: gcc at gcc dot gnu dot org
- Date: Thu, 19 Jun 2003 16:05:17 -0700 (PDT)
- Subject: Re: C compile time
--- Jan Hubicka <jh@suse.cz> wrote:
> Dara: with this patch you -O2 -funit-at-a-time
> should enable unit at a
> time compilation only, while -O2
> -finline-functions-called-once will be
> what -O2 -funit-at-a-time is now.
Okay, I've done that. I can't quite explain the
results (yes checking is disabled, machine otherwise
idle):
-O2 -O2 -funit... -O2 -finline-f...
453.50 449.82 531.44
-0.8% +17.2%
Hope this helps. I'm a bit surprised by the -O2
-funit... timings, as well as the fact that plain -O2
is now 6% faster than withh 20030614, so I'll try to
reconfirm these timings.
Dara
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