From: Tomas Frydrych <tf+lists.ecos@r-finger.com>
To: ecos-devel@ecos.sourceware.org
Subject: Re: Gnutools: consideration for upgrade to GCC 4.6
Date: Tue, 17 Jan 2012 16:25:00 -0000 [thread overview]
Message-ID: <4F15A0EA.4070008@r-finger.com> (raw)
In-Reply-To: <4F159D3C.1060108@meduna.org>
Hi,
On 17/01/12 16:09, Stanislav Meduna wrote:
> On 17.01.2012 10:36, Tomas Frydrych wrote:
>> Some of the more recent gccs were not producing usable binaries on some
>> platforms (including arm) with the -Os option. I do not know if this is
>> the case with 4.6.2, and I don't think ecos uses -Os by default, but it
>> is probably worth checking whether this works (and at least documenting
>> somewhere if it does not).
>
> Do you happen to have more details on this - versions, flags used,
> example to reproduce...?
>
> http://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html says
>
> -Os enables all -O2 optimizations that do not typically increase
> code size. It also performs further optimizations designed
> to reduce code size.
>
> it would be good to know whether the problems come from -O2 (which
> would be a major problem) or from these further optimizations.
It was known to be present in gcc 4.5.1, and it was not effecting the
-O2 option, only -Os. The openembedded/yoctoproject guys run into it
building u-boot, and it was mentioned yesterday on the poky mailing
list,
https://lists.yoctoproject.org/pipermail/poky/2012-January/007472.html.
Tomas
next prev parent reply other threads:[~2012-01-17 16:25 UTC|newest]
Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-13 17:01 Ilija Kocho
2012-01-13 18:54 ` Bernard Fouché
2012-01-13 19:39 ` Ilija Kocho
2012-01-13 19:09 ` Frank Pagliughi
2012-01-13 19:45 ` Ilija Kocho
2012-01-14 10:22 ` John Dallaway
2012-01-14 16:02 ` Sergei Gavrikov
2012-01-15 17:36 ` Grant Edwards
2012-01-15 18:42 ` Sergei Gavrikov
2012-01-15 21:39 ` Stanislav Meduna
2012-01-23 1:01 ` Jonathan Larmour
2012-01-15 22:21 ` Ilija Kocho
2012-01-15 22:21 ` Ilija Kocho
2012-01-23 1:07 ` Jonathan Larmour
2012-01-16 15:20 ` Grant Edwards
2012-01-16 20:43 ` Sergei Gavrikov
2012-01-16 21:11 ` Sergei Gavrikov
2012-01-17 9:58 ` Bernard Fouché
2012-01-17 10:38 ` Paul Beskeen
2012-01-17 12:28 ` Sergei Gavrikov
2012-01-23 0:59 ` Jonathan Larmour
2012-01-14 16:25 ` Ilija Kocho
2012-01-23 1:13 ` Jonathan Larmour
2012-01-23 18:40 ` Ilija Kocho
2012-01-23 19:29 ` Jonathan Larmour
2012-01-25 12:30 ` Alex Schuilenburg
2012-01-25 20:59 ` Ilija Kocho
2012-01-26 13:36 ` Alex Schuilenburg
2012-01-26 20:18 ` Ilija Kocho
2012-02-13 22:02 ` eCos GNU tools 4.6.2-20120125 ready for testing [Was Re: Gnutools: consideration for upgrade to GCC 4.6] Ilija Kocho
2012-02-20 16:00 ` Alex Schuilenburg
2012-02-20 20:45 ` Ilija Kocho
2012-03-02 16:36 ` Alex Schuilenburg
2012-03-03 13:32 ` Ilija Kocho
2012-03-04 0:10 ` Alex Schuilenburg
2012-03-04 17:49 ` Sergei Gavrikov
2012-03-04 23:08 ` Alex Schuilenburg
2012-03-04 19:37 ` eCos GNU tools 4.6.2-20120125 ready for testing John Dallaway
2012-03-04 23:47 ` Alex Schuilenburg
2012-03-05 8:00 ` Sergei Gavrikov
2012-03-07 13:51 ` Sergei Gavrikov
2012-03-07 11:58 ` Alex Schuilenburg
2012-03-07 13:01 ` Ilija Kocho
2012-03-07 13:39 ` Sergei Gavrikov
2012-03-07 13:13 ` John Dallaway
2012-03-12 16:43 ` Alex Schuilenburg
2012-03-16 15:05 ` Alex Schuilenburg
2012-03-08 17:28 ` Alex Schuilenburg
2012-03-09 9:39 ` Ilija Kocho
2012-03-09 17:15 ` Alex Schuilenburg
2012-03-10 17:16 ` John Dallaway
2012-03-12 16:12 ` Alex Schuilenburg
2012-03-13 13:31 ` Alex Schuilenburg
2012-03-13 14:16 ` Ilija Kocho
2012-03-13 17:47 ` Sergei Gavrikov
2012-03-15 8:50 ` John Dallaway
2012-03-17 14:50 ` Sergei Gavrikov
2012-03-17 20:58 ` John Dallaway
2012-03-17 16:44 ` Stanislav Meduna
2012-03-18 19:10 ` eCos GNU tools 4.6.3-20120315 [Was Re: eCos GNU tools 4.6.2-20120125 ready for testing] Ilija Kocho
2012-04-04 12:57 ` Lambrecht Jürgen
2012-04-04 13:18 ` Ilija Kocho
2012-05-31 8:42 ` eCos GNU tools 4.6.3-20120315 and link time optimization Bernard Fouché
2012-03-05 8:30 ` eCos GNU tools 4.6.2-20120125 ready for testing Tomas Frydrych
2012-03-05 8:56 ` Tomas Frydrych
2012-03-05 9:50 ` John Dallaway
2012-03-05 9:55 ` Anders Montonen
2012-03-05 14:20 ` John Dallaway
2012-03-05 10:16 ` Ilija Kocho
2012-03-05 12:56 ` Tomas Frydrych
2012-03-03 12:58 ` eCos GNU tools 4.6.2-20120125 ready for testing [Was Re: Gnutools: consideration for upgrade to GCC 4.6] Sergei Gavrikov
2012-01-17 9:37 ` Gnutools: consideration for upgrade to GCC 4.6 Tomas Frydrych
2012-01-17 16:10 ` Stanislav Meduna
2012-01-17 16:25 ` Tomas Frydrych [this message]
2012-01-17 16:45 ` Ilija Kocho
2012-01-20 14:42 ` Frank Pagliughi
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=4F15A0EA.4070008@r-finger.com \
--to=tf+lists.ecos@r-finger.com \
--cc=ecos-devel@ecos.sourceware.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 read-only IMAP folder(s) and NNTP newsgroup(s).