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From: "dorit at il dot ibm dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/21734] [4.1 regression] ICE: -ftree-vectorize, segfault
Date: Wed, 25 May 2005 08:44:00 -0000 [thread overview]
Message-ID: <20050525072836.29989.qmail@sourceware.org> (raw)
In-Reply-To: <20050524080015.21734.stefaandr@hotmail.com>
------- Additional Comments From dorit at il dot ibm dot com 2005-05-25 07:28 -------
> Actually, this is a bug in the vectorizer code to update PHIs in duplicate
> loops. forwprop AFAICT is just exposing the latent vectorizer bug.
> >From what I've been able to determine so far, the vectorizer code to
> update PHIs doesn't properly handle the case where a PHI is dead. It
> is likely someone with more experience in the vectorizer code is going
> to need to fix this.
I'll take a look
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21734
next prev parent reply other threads:[~2005-05-25 7:28 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-24 8:02 [Bug tree-optimization/21734] New: " stefaandr at hotmail dot com
2005-05-24 14:20 ` [Bug tree-optimization/21734] [4.1 regression] " reichelt at gcc dot gnu dot org
2005-05-24 14:24 ` pinskia at gcc dot gnu dot org
2005-05-25 6:20 ` law at redhat dot com
2005-05-25 8:44 ` dorit at il dot ibm dot com [this message]
2005-05-25 18:53 ` giovannibajo at libero dot it
2005-05-25 22:09 ` law at redhat dot com
2005-05-30 14:38 ` dorit at il dot ibm dot com
2005-05-30 20:06 ` stefaandr at hotmail dot com
2005-05-31 10:31 ` stefaandr at hotmail dot com
2005-05-31 23:48 ` pinskia at gcc dot gnu dot org
2005-06-01 8:41 ` reichelt at gcc dot gnu dot org
[not found] <20050524080015.21734.stefaan.deroeck@gmail.com>
2005-06-01 13:20 ` dorit at il dot ibm dot com
2005-06-01 13:22 ` dorit at il dot ibm dot com
2005-06-01 18:08 ` giovannibajo at libero dot it
2005-06-01 19:15 ` dorit at il dot ibm dot com
2005-06-02 5:22 ` law at redhat dot com
2005-06-02 14:52 ` cvs-commit at gcc dot gnu dot org
2005-06-02 18:59 ` pinskia at gcc dot gnu dot org
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