linuxppc-dev.lists.ozlabs.org archive mirror
 help / color / mirror / Atom feed
From: "Joakim Tjernlund" <Joakim.Tjernlund@lumentis.se>
To: "Mark Hatle" <fray@mvista.com>
Cc: "Tom Rini" <trini@kernel.crashing.org>,
	"LinuxPPC" <linuxppc-embedded@lists.linuxppc.org>,
	<alan@lxorguk.ukuu.org.uk>
Subject: Re: ppc_8xx-gcc 2.95.3 Monta Vista does not do ANY loop unrolling
Date: Tue, 12 Nov 2002 22:33:07 +0100	[thread overview]
Message-ID: <001701c28a93$17910200$0200a8c0@telia.com> (raw)
In-Reply-To: 3DD15CFE.9060602@mvista.com


> From one of our compiler guys in relationship to your original question:
>
>  > Later Alan Cox pointed out that my changes makes x86 run slower and it turns
>  > out that on x86 and a fairly new gcc will automatically unroll loops 'where
>  > appropriate'
>
> Fairly new: 3.3-pre only.

That's very new!
>
> Now I wonder:
>  > Is this a gcc 2.95.3, PPC or Monta Vista limitation?
>
> 2.95.3.
OK
>
>  > Which compiler will do unrolling 'where appropriate' for 8xx PPC and
>  > Where can I get a precompiled version?
>
> Nowhere, nor is using it for your kernels necessarily a good idea if
> you don't have compiler experience.
>
> > I know Dan is handling the enet stuff, but since you both work
>
> Dan no longer works for MontaVista.  (And has not for some time now.)
yes, my mistake.

Thanks for the info

        Jocke


** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

  reply	other threads:[~2002-11-12 21:33 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-11-12  8:12 ELDK 2.0, glibc and kernel 2.4.20??? Steven Scholz
2002-11-12  9:40 ` ppc_8xx-gcc 2.95.3 Monta Vista does not do ANY loop unrolling Joakim Tjernlund
2002-11-12 15:22   ` Tom Rini
2002-11-12 16:09     ` Joakim Tjernlund
2002-11-12 16:25       ` Tom Rini
2002-11-12 16:46         ` Joakim Tjernlund
2002-11-12 18:40           ` Tom Rini
2002-11-12 21:30             ` Joakim Tjernlund
2002-11-12 19:56           ` Mark Hatle
2002-11-12 21:33             ` Joakim Tjernlund [this message]
2002-11-12 12:39 ` ELDK 2.0, glibc and kernel 2.4.20??? wolfgang.grandegger
2002-11-12 12:58   ` Steven Scholz
  -- strict thread matches above, loose matches on Subject: below --
2002-11-12  9:56 ppc_8xx-gcc 2.95.3 Monta Vista does not do ANY loop unrolling Jaap-Jan Boor
2002-11-12 10:42 ` Joakim Tjernlund
2002-11-12 10:49 Jaap-Jan Boor
2002-11-12 10:55 ` Joakim Tjernlund

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='001701c28a93$17910200$0200a8c0@telia.com' \
    --to=joakim.tjernlund@lumentis.se \
    --cc=alan@lxorguk.ukuu.org.uk \
    --cc=fray@mvista.com \
    --cc=linuxppc-embedded@lists.linuxppc.org \
    --cc=trini@kernel.crashing.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 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 NNTP newsgroup(s).