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From: "pcarlini at suse dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/28778] [4.0/4.1/4.2 Regression] alias bug with cast and call clobbered
Date: Tue, 26 Sep 2006 15:57:00 -0000 [thread overview]
Message-ID: <20060926155728.25766.qmail@sourceware.org> (raw)
In-Reply-To: <bug-28778-1447@http.gcc.gnu.org/bugzilla/>
------- Comment #40 from pcarlini at suse dot de 2006-09-26 15:57 -------
(In reply to comment #38)
> We have our reasons to enable strict aliasing by default.
In my opinion, this is a central point. I think we should try to explain what
strict aliasing buys from the point of view of the optimizers. In my
experience, quite a few people do not quite understand *why* those aliasing
rules are there in the first place and why lately GCC (or any modern compiler,
for that matter, of course, that's the point) tries to be as strict as
possible: otherwise, those people would be more willing to learn the rules and
appreciate our (I should say, yours, Danny and compiler people) hard efforts in
this area.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28778
next prev parent reply other threads:[~2006-09-26 15:57 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-18 21:07 [Bug tree-optimization/28778] New: strict-aliasing bug mrs at apple dot com
2006-08-18 21:11 ` [Bug tree-optimization/28778] " pinskia at gcc dot gnu dot org
2006-08-18 21:12 ` mrs at apple dot com
2006-08-18 21:15 ` pinskia at gcc dot gnu dot org
2006-08-18 21:18 ` [Bug tree-optimization/28778] [4.0/4.1/4.2 Regression] alias bug with cast and call clobbered pinskia at gcc dot gnu dot org
2006-08-19 10:15 ` rguenth at gcc dot gnu dot org
2006-08-19 10:44 ` rguenth at gcc dot gnu dot org
2006-08-19 14:10 ` dberlin at gcc dot gnu dot org
2006-08-19 14:27 ` rguenth at gcc dot gnu dot org
2006-08-20 22:53 ` mmitchel at gcc dot gnu dot org
2006-08-21 1:34 ` dberlin at dberlin dot org
2006-08-21 16:34 ` janis at gcc dot gnu dot org
2006-08-25 19:57 ` drow at gcc dot gnu dot org
2006-08-25 20:51 ` drow at gcc dot gnu dot org
2006-08-25 20:57 ` drow at gcc dot gnu dot org
2006-08-25 22:12 ` drow at gcc dot gnu dot org
2006-08-26 15:15 ` drow at gcc dot gnu dot org
2006-08-26 20:30 ` rguenth at gcc dot gnu dot org
2006-08-26 20:42 ` rguenth at gcc dot gnu dot org
2006-08-26 23:25 ` drow at gcc dot gnu dot org
2006-08-27 4:12 ` dberlin at dberlin dot org
2006-08-27 14:20 ` rguenth at gcc dot gnu dot org
2006-08-27 15:41 ` dberlin at dberlin dot org
2006-08-27 15:50 ` rguenth at gcc dot gnu dot org
2006-08-27 16:00 ` dberlin at dberlin dot org
2006-08-27 17:56 ` drow at gcc dot gnu dot org
2006-08-27 20:25 ` mmitchel at gcc dot gnu dot org
2006-08-27 20:28 ` mmitchel at gcc dot gnu dot org
2006-08-27 20:51 ` dberlin at dberlin dot org
2006-08-27 21:09 ` dberlin at dberlin dot org
2006-08-28 8:43 ` rguenth at gcc dot gnu dot org
2006-09-09 17:55 ` dberlin at dberlin dot org
2006-09-16 18:09 ` steven at gcc dot gnu dot org
2006-09-16 20:03 ` dberlin at dberlin dot org
2006-09-26 4:44 ` acahalan at gmail dot com
2006-09-26 4:56 ` Andrew Pinski
2006-09-26 4:56 ` pinskia at physics dot uc dot edu
2006-09-26 14:17 ` acahalan at gmail dot com
2006-09-26 14:32 ` pinskia at gcc dot gnu dot org
2006-09-26 15:33 ` acahalan at gmail dot com
2006-09-26 15:47 ` dberlin at dberlin dot org
2006-09-26 15:49 ` pinskia at gcc dot gnu dot org
2006-09-26 15:57 ` pcarlini at suse dot de [this message]
2006-09-27 2:12 ` dberlin at dberlin dot org
2006-10-13 17:50 ` dberlin at gcc dot gnu dot org
2006-10-19 23:06 ` dberlin at gcc dot gnu dot org
2006-10-19 23:07 ` dberlin at gcc dot gnu dot org
2006-10-20 8:25 ` [Bug tree-optimization/28778] [4.0/4.1 " rguenth at gcc dot gnu dot org
2006-11-05 22:17 ` chuck at vertica dot com
2006-11-05 22:26 ` pinskia at gcc dot gnu dot org
2006-11-05 22:26 ` drow at gcc dot gnu dot org
2006-11-05 23:39 ` chuck at vertica dot com
2007-01-25 15:51 ` gdr at gcc dot gnu dot org
2007-02-07 22:52 ` pinskia at gcc dot gnu dot org
2007-02-14 9:09 ` mmitchel at gcc dot gnu dot org
2008-07-04 15:51 ` [Bug tree-optimization/28778] [4.1 " jsm28 at gcc dot gnu dot org
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