From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-370094-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 25244 invoked by alias); 10 Oct 2011 14:15:54 -0000
Received: (qmail 25232 invoked by uid 22791); 10 Oct 2011 14:15:49 -0000
X-SWARE-Spam-Status: No, hits=-2.9 required=5.0	tests=ALL_TRUSTED,AWL,BAYES_00
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; Mon, 10 Oct 2011 14:15:32 +0000
From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/50452] [4.7 Regression] Internal compiler error: verify_flow_info failed
Date: Mon, 10 Oct 2011 14:15:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Keywords: ice-on-valid-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: rguenth at gcc dot gnu.org
X-Bugzilla-Status: NEW
X-Bugzilla-Priority: P1
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 4.7.0
X-Bugzilla-Changed-Fields: Priority Status Last reconfirmed CC Ever Confirmed
Message-ID: <bug-50452-4-GwwrQPQU2F@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-50452-4@http.gcc.gnu.org/bugzilla/>
References: <bug-50452-4@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
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: 2011-10/txt/msg00838.txt.bz2

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50452

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011-10-10
                 CC|                            |hubicka at gcc dot gnu.org
     Ever Confirmed|0                           |1

--- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-10-10 14:15:27 UTC ---
Confirmed.

t.i: In function 'bar':
t.i:6:1: error: definition in block 3 follows the use
for SSA_NAME: D.2752_14 in statement:
D.2758_15 = (short int) D.2752_14;
t.i:6:1: internal compiler error: verify_ssa failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

triggered by IPA inlining when inlining bar.part.0 into bar.

Function splitting already produces bogus code though (but it's not
catched there):

<bb 3>:
  b.2_8 = b;
  bar.part.0 (s_13(D), a_1(D), D.2752_14);
  D.2752_14 = (int) b.2_8;

as it doesn't verify anything ... (patch for that coming).