From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
 id CD21F3944828; Mon, 16 Nov 2020 11:11:52 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org CD21F3944828
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/97838] [11 Regression] ICE at -O3 on
 x86_64-pc-linux-gnu: Segmentation fault by r11-4428
Date: Mon, 16 Nov 2020 11:11:52 +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-Version: 11.0
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: cvs-commit at gcc dot gnu.org
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P1
X-Bugzilla-Assigned-To: rguenth at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 11.0
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-97838-4-uRIK9CoTef@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-97838-4@http.gcc.gnu.org/bugzilla/>
References: <bug-97838-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-BeenThere: gcc-bugs@gcc.gnu.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Gcc-bugs mailing list <gcc-bugs.gcc.gnu.org>
List-Unsubscribe: <https://gcc.gnu.org/mailman/options/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=unsubscribe>
List-Archive: <https://gcc.gnu.org/pipermail/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-request@gcc.gnu.org?subject=help>
List-Subscribe: <https://gcc.gnu.org/mailman/listinfo/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=subscribe>
X-List-Received-Date: Mon, 16 Nov 2020 11:11:52 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97838

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:d0a206abc6cbf0e992bf82bbb3584686eae05d34

commit r11-5050-gd0a206abc6cbf0e992bf82bbb3584686eae05d34
Author: Richard Biener <rguenther@suse.de>
Date:   Mon Nov 16 09:28:03 2020 +0100

    tree-optimization/97838 - fix SLP leaf detection

    This properly handles reduction PHI nodes with unrepresented
    initial value as leaf in the SLP graph.

    2020-11-16  Richard Biener  <rguenther@suse.de>

            PR tree-optimization/97838
            * tree-vect-slp.c (vect_slp_build_vertices): Properly handle
            not backwards reachable cycles.
            (vect_optimize_slp): Check a node is leaf before marking it
            visited.

            * gcc.dg/vect/pr97838.c: New testcase.=