From: "Ondřej Bílka" <neleai@seznam.cz>
To: Wilco Dijkstra <wdijkstr@arm.com>
Cc: 'GNU C Library' <libc-alpha@sourceware.org>
Subject: Re: [PATCH][AArch64] Add optimized memchr
Date: Sat, 26 Sep 2015 08:46:00 -0000 [thread overview]
Message-ID: <20150926084544.GA31280@domone> (raw)
In-Reply-To: <002d01d0f795$0ce77eb0$26b67c10$@com>
On Fri, Sep 25, 2015 at 02:21:13PM +0100, Wilco Dijkstra wrote:
> An optimized memchr was missing for AArch64. This version is similar to strchr and is significantly
> faster than the C version. Passes GLIBC tests.
>
> OK for commit?
>
> ChangeLog:
> 2015-09-25 Wilco Dijkstra <wdijkstr@arm.com>
> 2015-09-25 Kevin Petit <kevin.petit@arm.com>
>
> * sysdeps/aarch64/memchr.S (__memchr): New file.
How you tested performance. I think that also here loading first 32
bytes unaligned should be better. Could you use dryrun to verify?
Also same optimization could be used for memrchr.
next prev parent reply other threads:[~2015-09-26 8:46 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-25 13:21 Wilco Dijkstra
2015-09-26 8:46 ` Ondřej Bílka [this message]
2015-09-28 9:23 ` Wilco Dijkstra
2015-12-15 16:41 Wilco Dijkstra
2016-04-15 12:42 ` Wilco Dijkstra
2016-05-12 14:02 ` Fw: " Wilco Dijkstra
2016-06-03 12:41 ` Wilco Dijkstra
2016-06-21 13:35 ` Wilco Dijkstra
2016-10-19 14:58 ` Wilco Dijkstra
2016-10-25 17:08 ` Adhemerval Zanella
2016-11-02 16:45 ` Wilco Dijkstra
2016-11-04 9:01 ` Marcus Shawcroft
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=20150926084544.GA31280@domone \
--to=neleai@seznam.cz \
--cc=libc-alpha@sourceware.org \
--cc=wdijkstr@arm.com \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).