From: Ludovic Brenta <ludovic@ludovic-brenta.org>
Subject: Re: Access keyword
Date: Wed, 30 Apr 2008 22:44:43 +0200
Date: 2008-04-30T22:44:43+02:00 [thread overview]
Message-ID: <87k5ifoyx0.fsf@ludovic-brenta.org> (raw)
In-Reply-To: 4818818A.8050906@gmail.com
Sébastien <seb.morand@gmail.com> writes:
> Correct, I use -gnatVn but it looks like it's not the same (I don't
> inlined anything). With -gnatp, Results are even more suprising:
>
> Norme is as fast as C and 30% faster than NormeAccess.
I don't find this surprising at all. With -gnatp, the compiler emits
essentially the same object code as for the "equivalent" C program.
Using access values involves dereferencing a pointer multiple times,
so is bound to be slower.
--
Ludovic Brenta.
next prev parent reply other threads:[~2008-04-30 20:44 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-29 13:55 Access keyword Sébastien
2008-04-29 14:35 ` Peter Hermann
2008-04-29 14:43 ` Ludovic Brenta
2008-04-29 15:16 ` stefan-lucks
2008-04-29 16:31 ` Sébastien
2008-04-29 19:55 ` Gautier
2008-04-30 14:26 ` Sébastien
2008-04-30 17:13 ` Gautier
2008-04-30 20:44 ` Ludovic Brenta [this message]
2008-04-29 17:37 ` Adam Beneschan
2008-04-29 19:08 ` Jeffrey R. Carter
2008-04-29 21:03 ` Maciej Sobczak
2008-04-29 21:32 ` Randy Brukardt
2008-04-30 4:36 ` Gautier
2008-04-30 7:15 ` Maciej Sobczak
2008-04-30 7:56 ` Dmitry A. Kazakov
2008-04-30 9:21 ` Georg Bauhaus
2008-04-30 15:16 ` Adam Beneschan
2008-04-30 15:20 ` Adam Beneschan
2008-04-30 21:32 ` Maciej Sobczak
2008-04-30 21:58 ` Adam Beneschan
2008-05-01 1:10 ` Adam Beneschan
2008-04-30 23:40 ` Randy Brukardt
2008-04-30 14:32 ` Sébastien
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