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From: Dario Teixeira <darioteixeira@yahoo.com>
To: caml-list@inria.fr
Subject: Re: [Caml-list] Binary logarithm of a power of 2
Date: Fri, 27 May 2011 04:50:21 -0700 (PDT)	[thread overview]
Message-ID: <833816.58675.qm@web111502.mail.gq1.yahoo.com> (raw)
In-Reply-To: <707567.2845.qm@web111505.mail.gq1.yahoo.com>

Hi,
 
> Still, my question is whether this is indeed the optimal solution.
> Is there some penalty associated with invoking C functions that may
> negate the supposed advantage of __builtin_ctz?

Thank you, Till and Goswin, for your suggestions.  Marking the stub
as "noalloc" and removing the CAML_ boilerplate did result in a very
noticeable speed up in the synthetic benchmarks I tried.  Great!

Cheers,
Dario



  parent reply	other threads:[~2011-05-27 11:50 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-26 15:51 Dario Teixeira
2011-05-26 19:28 ` Goswin von Brederlow
2011-05-27 11:50 ` Dario Teixeira [this message]
2011-05-27 13:26   ` [Caml-list] " Sylvain Le Gall
2011-05-27 17:15     ` Xavier Leroy
2011-05-27 18:04       ` Dario Teixeira
2011-05-27 18:37         ` Till Varoquaux
2011-05-27 18:46           ` Till Varoquaux
2011-05-28  0:28             ` Harrison, John R
2011-05-28 15:58         ` Richard W.M. Jones
2011-05-28 16:04           ` Edgar Friendly
2011-05-28 17:50       ` Matteo Frigo
     [not found]         ` <BANLkTimtMZvoBKHznBYH91czci=YdiRcog@mail.gmail.com>
2011-05-28 21:13           ` Fwd: " Johannes
2011-05-30 11:48         ` Jean-Christophe Filliâtre

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