From: Fredrik Gustafsson <iveqy@iveqy.com>
To: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: hex_to_bin speedup
Date: Fri, 28 May 2010 23:05:42 +0200 [thread overview]
Message-ID: <20100528210542.GG28651@iveqy.com> (raw)
In-Reply-To: <AANLkTinZUTSADw44UJ2g98AFCzs15DVt6zqLYr61HEaS@mail.gmail.com>
On Thu, May 27, 2010 at 07:35:05PM +0300, Andy Shevchenko wrote:
> > [1] Benchmark results
> > $ gcc -O2 main.c && ./a.out
> > tolower() was faster 2657 times
> > if-statement was faster 2571 times
> > Equal fast 4772 times
> So, optimizer do the job for tolower(). Thus, nothing to worry about.
Yes I guess so. I tested with -Os too and that also does the trick.
Thank you for your time.
--
iveqy
next prev parent reply other threads:[~2010-05-28 21:11 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-27 10:07 hex_to_bin speedup Fredrik Gustafsson
[not found] ` <AANLkTinn7aEv0ueW4uRN06XdUbEltTfmjRXEABMRN-7e@mail.gmail.com>
[not found] ` <20100527142848.GA23543@iveqy.com>
2010-05-27 16:35 ` Andy Shevchenko
2010-05-28 21:05 ` Fredrik Gustafsson [this message]
-- strict thread matches above, loose matches on Subject: below --
2010-05-28 21:38 George Spelvin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20100528210542.GG28651@iveqy.com \
--to=iveqy@iveqy.com \
--cc=andy.shevchenko@gmail.com \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.