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 9FA9D3858423; Fri,  3 Dec 2021 20:16:47 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 9FA9D3858423
From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/103544] [11/12 Regression] compiler crashes
 when trying to vectorize loop
Date: Fri, 03 Dec 2021 20:16:47 +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: 11.2.0
X-Bugzilla-Keywords: ice-on-valid-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: pinskia at gcc dot gnu.org
X-Bugzilla-Status: NEW
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 11.3
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: component cf_known_to_work cf_reconfirmed_on
 short_desc keywords bug_status target_milestone cf_known_to_fail
 everconfirmed
Message-ID: <bug-103544-4-LsHe6nnM23@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-103544-4@http.gcc.gnu.org/bugzilla/>
References: <bug-103544-4@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: Fri, 03 Dec 2021 20:16:47 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103544

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|c++                         |tree-optimization
      Known to work|                            |10.1.0, 10.3.0
   Last reconfirmed|                            |2021-12-03
            Summary|compiler crashes when       |[11/12 Regression] compiler
                   |trying to vectorize loop    |crashes when trying to
                   |                            |vectorize loop
           Keywords|                            |ice-on-valid-code
             Status|UNCONFIRMED                 |NEW
   Target Milestone|---                         |11.3
      Known to fail|                            |11.1.0, 11.2.0
     Ever confirmed|0                           |1

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Testcase without any headers:
int crash_me(char* ptr, unsigned long size){
    short result[16] =3D {0};

    unsigned long no_iters =3D 0;
    for(unsigned long i =3D 0; i < size - 12; i+=3D 13){
        for(unsigned long j =3D 0; j < 12; j++){
            result[j] +=3D ptr[i + j] - '0';
        }
        no_iters++;
    }

    int result_int =3D 0;
    for(int j =3D 0; j < 12; j++){
        int bit_value =3D result[j] > no_iters/2 ? 1 : 0;
        result_int |=3D bit_value;
    }

    return result_int;
}=