From: Eric Botcazou <ebotcazou@adacore.com>
To: Steven Bosscher <stevenb.gcc@gmail.com>
Cc: gcc-patches@gcc.gnu.org, Dominique Dhumieres <dominiq@lps.ens.fr>,
bonzini@gnu.org, hubicka@ucw.cz
Subject: Re: Fix twolf -funroll-loops -O3 miscompilation (a semi-latent web.c bug)
Date: Mon, 19 Nov 2012 21:29:00 -0000 [thread overview]
Message-ID: <13403936.94slqpoHRY@polaris> (raw)
In-Reply-To: <CABu31nPfTSwrMvmk1BHmcz5iR=oO5CGz1q0eYAx9ezbhLZXiLA@mail.gmail.com>
> Thanks for this reduced test case, that's saving me a lot of work!
You're welcome.
> Can you please try and see if the following C test case also fails?
Yup, with the same compilation options, there are the same dreadful lines
ld [%g0+0], %fn
in the assembly file, which translates into (mem:SF (const_int 0 [0])) in the
RTL dumps. And the executable does segfault at runtime.
--
Eric Botcazou
next prev parent reply other threads:[~2012-11-19 21:29 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-18 23:15 Dominique Dhumieres
2012-11-19 9:50 ` Steven Bosscher
2012-11-19 11:27 ` Eric Botcazou
2012-11-19 20:35 ` Steven Bosscher
2012-11-19 21:20 ` Steven Bosscher
2012-11-19 21:52 ` Eric Botcazou
2012-11-19 22:03 ` Steven Bosscher
2012-11-19 22:44 ` Eric Botcazou
2012-11-19 22:48 ` Steven Bosscher
2012-11-23 22:46 ` Steven Bosscher
2012-11-24 1:10 ` Steven Bosscher
2012-11-25 20:44 ` Steven Bosscher
2012-11-25 22:38 ` Steven Bosscher
2012-11-26 14:38 ` Dominique Dhumieres
2012-11-26 15:46 ` Steven Bosscher
2012-11-27 9:58 ` Eric Botcazou
2012-11-27 10:35 ` Steven Bosscher
2012-11-27 12:01 ` Steven Bosscher
2012-11-27 12:29 ` Steven Bosscher
2012-11-27 13:04 ` Steven Bosscher
2012-11-27 14:25 ` Dominique Dhumieres
2012-11-27 14:49 ` Steven Bosscher
2012-11-27 13:48 ` Dominique Dhumieres
2012-11-27 14:33 ` Paolo Bonzini
2012-11-27 16:59 ` Eric Botcazou
2012-11-27 23:29 ` Steven Bosscher
2012-11-27 23:50 ` Eric Botcazou
2012-11-27 23:54 ` Steven Bosscher
2012-11-27 23:59 ` Steven Bosscher
2012-11-28 0:43 ` Steven Bosscher
2012-11-28 7:46 ` Eric Botcazou
2012-11-28 15:57 ` Steven Bosscher
2012-11-28 22:12 ` Eric Botcazou
2012-11-28 23:54 ` Steven Bosscher
2012-12-01 14:57 ` Eric Botcazou
2012-12-01 16:45 ` Steven Bosscher
2012-12-03 18:26 ` Eric Botcazou
2012-12-03 20:20 ` Steven Bosscher
2012-12-03 21:12 ` Eric Botcazou
2012-12-03 23:28 ` Steven Bosscher
2012-12-03 20:15 ` Paolo Bonzini
2012-11-19 21:29 ` Eric Botcazou [this message]
-- strict thread matches above, loose matches on Subject: below --
2012-10-12 20:14 Jan Hubicka
2012-10-12 20:36 ` Markus Trippelsdorf
2012-10-12 20:44 ` Steven Bosscher
2012-10-12 21:16 ` Jan Hubicka
2012-10-12 21:19 ` Steven Bosscher
2012-10-12 21:31 ` Jan Hubicka
2012-10-12 22:41 ` Steven Bosscher
2012-10-14 9:13 ` Paolo Bonzini
2012-10-14 21:27 ` Steven Bosscher
2012-10-14 21:35 ` Eric Botcazou
2012-10-14 21:45 ` Steven Bosscher
2012-10-15 8:14 ` Paolo Bonzini
2012-10-15 8:23 ` Steven Bosscher
2012-10-15 8:35 ` Paolo Bonzini
2012-10-15 8:38 ` Steven Bosscher
2012-10-15 10:49 ` Steven Bosscher
2012-10-15 12:28 ` Paolo Bonzini
2012-10-15 13:19 ` Steven Bosscher
2012-10-15 13:29 ` Paolo Bonzini
2012-10-15 13:49 ` Steven Bosscher
2012-10-16 10:35 ` Steven Bosscher
2012-10-16 11:05 ` Steven Bosscher
2012-10-16 11:42 ` Paolo Bonzini
2012-10-16 22:57 ` Steven Bosscher
2012-10-19 5:14 ` Bin.Cheng
2012-10-12 21:05 ` Steven Bosscher
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=13403936.94slqpoHRY@polaris \
--to=ebotcazou@adacore.com \
--cc=bonzini@gnu.org \
--cc=dominiq@lps.ens.fr \
--cc=gcc-patches@gcc.gnu.org \
--cc=hubicka@ucw.cz \
--cc=stevenb.gcc@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).