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From: "zadeck at naturalbridge dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/35642] [4.4 Regression] heisenbug in tree vectorizer
Date: Sun, 20 Apr 2008 21:22:00 -0000 [thread overview]
Message-ID: <20080420212144.16246.qmail@sourceware.org> (raw)
In-Reply-To: <bug-35642-11013@http.gcc.gnu.org/bugzilla/>
------- Comment #11 from zadeck at naturalbridge dot com 2008-04-20 21:21 -------
Subject: Re: [4.4 Regression] heisenbug in tree
vectorizer
rguenth at gcc dot gnu dot org wrote:
> ------- Comment #10 from rguenth at gcc dot gnu dot org 2008-04-20 20:39 -------
> What is this bug? A missed-optimization? wrong-code? ...
>
>
>
the testcases that randomly pass or fail check the dump files to make
sure that specific transformations have been performed. So i guess you
could say that it is a missed optimization but given that this is most
likely caused by either storage being overwritten or an uninitialized
variable, it is hard to assure that this does not effect correctness.
kenny
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35642
next prev parent reply other threads:[~2008-04-20 21:22 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-19 18:42 [Bug tree-optimization/35642] New: " zadeck at naturalbridge dot com
2008-03-19 19:16 ` [Bug tree-optimization/35642] " pinskia at gcc dot gnu dot org
2008-03-19 19:18 ` pinskia at gcc dot gnu dot org
2008-03-19 19:26 ` zadeck at naturalbridge dot com
2008-03-20 9:31 ` irar at il dot ibm dot com
2008-03-20 9:43 ` victork at gcc dot gnu dot org
2008-03-20 13:44 ` victork at gcc dot gnu dot org
2008-03-20 13:52 ` bonzini at gnu dot org
2008-03-20 14:00 ` zadeck at naturalbridge dot com
2008-03-20 14:08 ` bonzini at gnu dot org
2008-04-07 1:59 ` [Bug tree-optimization/35642] [4.4 Regression] " pinskia at gcc dot gnu dot org
2008-04-20 20:40 ` rguenth at gcc dot gnu dot org
2008-04-20 21:22 ` zadeck at naturalbridge dot com [this message]
2008-04-20 21:54 ` rguenth at gcc dot gnu dot org
2008-05-22 5:42 ` irar at il dot ibm dot com
2008-07-06 11:55 ` irar at il dot ibm dot com
2008-07-06 11:56 ` irar at il dot ibm dot com
2008-07-06 11:58 ` irar at il dot ibm dot com
2008-07-10 14:06 ` [Bug tree-optimization/35642] [4.4 Regression] short * short multiplication not vectorized on Power bonzini at gnu dot org
2008-07-13 6:01 ` irar at il dot ibm dot com
2008-07-18 16:49 ` rguenth at gcc dot gnu dot org
2008-09-07 8:56 ` irar at gcc dot gnu dot org
2008-09-07 11:07 ` irar at il dot ibm dot com
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