From: Richard Henderson <rth@twiddle.net>
To: "Ryan S. Arnold" <ryan.arnold@gmail.com>
Cc: libc-alpha@sourceware.org, libc-ports@sourceware.org
Subject: Re: Include hwcap as ifunc argument
Date: Mon, 04 Jun 2012 22:14:00 -0000 [thread overview]
Message-ID: <4FCD333E.3090107@twiddle.net> (raw)
In-Reply-To: <CAAKybw_qMks+2nP=mR6=og9H3AphS50UfcOZ5OauTivE98B3Pw@mail.gmail.com>
On 06/04/2012 02:21 PM, Ryan S. Arnold wrote:
> Peter Bergner reminded me today that on PowerPC the IFUNC resolver
> will most likely/often use the value in AT_PLATFORM rather than
> AT_HWCAP to determine which optimized function to use. I suppose this
> would diminish the necessity of passing the hwcap to the ifunc
> resolver.
It depends on what's being tested, I suppose.
Within glibc itself you've got lots of platform-specific tuning, so
you may well use AT_PLATFORM more.
Outside glibc, it might just be a test for Altivec or VDX or whatever.
r~
next prev parent reply other threads:[~2012-06-04 22:14 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4FBA744A.6000702@twiddle.net>
2012-05-24 14:40 ` [ppc] " Richard Henderson
2012-05-24 14:45 ` Joseph S. Myers
2012-05-24 19:47 ` David Miller
2012-05-25 17:44 ` Richard Henderson
2012-06-04 21:22 ` Ryan S. Arnold
2012-06-04 22:14 ` Richard Henderson [this message]
2012-06-08 14:01 ` Andreas Krebbel
2012-06-08 14:49 ` Richard Henderson
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=4FCD333E.3090107@twiddle.net \
--to=rth@twiddle.net \
--cc=libc-alpha@sourceware.org \
--cc=libc-ports@sourceware.org \
--cc=ryan.arnold@gmail.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).