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 236C9385842E; Fri,  3 Dec 2021 20:13:29 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 236C9385842E
From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/103544] compiler crashes when trying to vectorize loop
Date: Fri, 03 Dec 2021 20:13:29 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 11.2.0
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: pinskia at gcc dot gnu.org
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-103544-4-bkW81tyfrm@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 20:13:29 -0000

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

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Testcase:
#include <array>
#include <immintrin.h>

int crash_me(char* ptr, size_t size){
    std::array<short, 16> result =3D {0};

    size_t no_iters =3D 0;
    for(size_t i =3D 0; i < size - 12; i+=3D 13){
        for(size_t 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;
}=