From: Bernd Roesch <nospamname@gmx.de>
To: ami_stuff <ami_stuff@o2.pl>, Martin Guy <martinwguy@gmail.com>
Cc: gcc@gcc.gnu.org
Subject: Re: "-fno-unswitch-loops" option have no effect?
Date: Mon, 17 Aug 2009 19:42:00 -0000 [thread overview]
Message-ID: <yam11551.552.283353120@mail.gmx.net> (raw)
In-Reply-To: <3165a1e6.6c5afa14.4a89378f.5d332@o2.pl>
Hello ami_stuff
On 17.08.09, you wrote:
> Hi,
>
>> Hundreds and hundreds of people read this list, so every low-detail
>> "I think there may be a bug" message you send wastes hours of other
>> people's time.
>
> Ok, Ok, but if someone will reproduce the same problem on his system I can
> fill bugreport, otherwise I will only waste my time, hours of my time, to
> start detailed bugreport. Maybe this is only fault of my GCC's build?
gcc > 4 AOS 68k builds are build from offical gcc sourcetree and there are
no changes
>
>> If it *is* a bug, on the bug tracker, it will be picked up by people
>> interested in that specific area
>
> It may takes months before someone will look at the bugreport. If it's
> really a bug IMHO it's a bit critical bug.
>
>> though you don't seem to do much
>> in-depth research, nor do you supply any detail of what you did and
>> what you expected.
>
> There is no need for much detail, just compile any bigger sourcecode with
> -O3 -fno-.. and after that with -O2 .... When the object files are not
> identical, something is wrong and I can start a bug report.
how much is size diffrent ?
You use
-finline-functions -fpredictive-commoning -fgcse-after-reload
-ftree-vectorize
right ?
I see in Gcc source that there is more set on -O3.
flag_ipa_cp_clone = opt3;
if (flag_ipa_cp_clone)
flag_ipa_cp = 1;
.but i
think you can easy test, compile the ffmpeg, if it give no internal
compiler error with -fno........ then it work.
here is from source opt.c what is set on opt3
opt3 = (optimize >= 3);
flag_predictive_commoning = opt3;
flag_inline_functions = opt3;
flag_unswitch_loops = opt3;
flag_gcse_after_reload = opt3;
flag_tree_vectorize = opt3;
flag_ipa_cp_clone = opt3;
if (flag_ipa_cp_clone)
flag_ipa_cp = 1;
>
> Regards
>
Regards
next prev parent reply other threads:[~2009-08-17 18:35 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-17 7:19 ami_stuff
[not found] ` <56d259a00908170344v54442954u3a5d0337de3b98fe@mail.gmail.com>
2009-08-17 13:29 ` ami_stuff
2009-08-17 19:42 ` Bernd Roesch [this message]
2009-08-17 19:54 ` ami_stuff
2009-08-17 22:16 ` Alexander Strange
2009-08-17 13:33 ` Richard Guenther
2009-08-17 13:35 ` ami_stuff
2009-08-17 16:01 ` Paolo Bonzini
2009-08-17 16:07 ` ami_stuff
2009-08-17 16:14 ` Paolo Bonzini
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=yam11551.552.283353120@mail.gmx.net \
--to=nospamname@gmx.de \
--cc=ami_stuff@o2.pl \
--cc=gcc@gcc.gnu.org \
--cc=martinwguy@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).