From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-333762-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 5708 invoked by alias); 14 Oct 2010 07:57:04 -0000
Received: (qmail 5698 invoked by uid 22791); 14 Oct 2010 07:57:03 -0000
X-SWARE-Spam-Status: No, hits=-2.4 required=5.0	tests=ALL_TRUSTED,AWL,BAYES_00,MISSING_MID
X-Spam-Check-By: sourceware.org
Received: from localhost (HELO gcc.gnu.org) (127.0.0.1)    by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 14 Oct 2010 07:57:00 +0000
From: "abel at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/45570] [4.6 Regression] ICE: in cfg_preds_1, at sel-sched-ir.c:4584
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: rtl-optimization
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: abel at gcc dot gnu.org
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Priority: P1
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 4.6.0
X-Bugzilla-Changed-Fields:
In-Reply-To: <bug-45570-4@http.gcc.gnu.org/bugzilla/>
References: <bug-45570-4@http.gcc.gnu.org/bugzilla/>
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
Content-Type: text/plain; charset="UTF-8"
MIME-Version: 1.0
Date: Thu, 14 Oct 2010 07:57:00 -0000
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
X-SW-Source: 2010-10/txt/msg01151.txt.bz2
Message-ID: <20101014075700.WjuBpq17GGivgF7-AWOZlWyOiI1I2WQ-BPuJRnlOq7k@z>

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45570

--- Comment #4 from Andrey Belevantsev <abel at gcc dot gnu.org> 2010-10-14 07:56:50 UTC ---
Author: abel
Date: Thu Oct 14 07:56:47 2010
New Revision: 165454

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=165454
Log:
    PR rtl-optimization/45570
    * sel-sched-ir.c (cfg_preds_1): When walking out of the region, assert
    that we are pipelining outer loops.  Allow returning zero predecessors.
    * gcc.dg/pr45570.c: New test. 

Added:
    trunk/gcc/testsuite/gcc.dg/pr45570.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/sel-sched-ir.c
    trunk/gcc/testsuite/ChangeLog