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 5A0E03858001; Tue, 26 Oct 2021 10:30:06 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 5A0E03858001
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug testsuite/96109] [11/12 Regression] gcc.dg/vect/slp-47.c etc.
 FAIL
Date: Tue, 26 Oct 2021 10:30:06 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: testsuite
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: P3
X-Bugzilla-Assigned-To: rguenth at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 11.3
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-96109-4-FrkdN4M9V6@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-96109-4@http.gcc.gnu.org/bugzilla/>
References: <bug-96109-4@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: Tue, 26 Oct 2021 10:30:06 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96109

--- Comment #9 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:94f28340513753ba94ab483e93ce1d096842a5ad

commit r12-4706-g94f28340513753ba94ab483e93ce1d096842a5ad
Author: Richard Biener <rguenther@suse.de>
Date:   Mon Oct 25 13:39:07 2021 +0200

    Move negative stride bias out of dr_misalignment

    This moves applying of a bias for negative stride accesses out of
    dr_misalignment in favor of a more general optional offset argument.
    The negative bias is now computed by get_load_store_type and applied
    accordingly to determine the alignment support scheme.  Likewise
    the peeling/versioning code is adjusted albeit that still assumes
    we'll end up with VMAT_CONTIGUOUS_DOWN or VMAT_CONTIGUOUS_REVERSE
    but at least when not so (VMAT_STRIDED_SLP is one possibility) then
    get_load_store_type will _not_ falsely report an aligned access but
    instead an access with known misalignment.

    This fixes PR96109.

    2021-10-25  Richard Biener  <rguenther@suse.de>

            PR tree-optimization/96109
            * tree-vectorizer.h (dr_misalignment): Add optional offset
            parameter.
            * tree-vect-data-refs.c (dr_misalignment): Likewise.  Remove
            offset applied for negative stride accesses.
            (vect_enhance_data_refs_alignment): Compute negative stride
            access offset and pass it to dr_misalignment.
            * tree-vect-stmts.c (get_negative_load_store_type): Pass
            negative offset to dr_misalignment.
            (get_group_load_store_type): Likewise.
            (get_load_store_type): Likewise.
            (vectorizable_store): Remove asserts about alignment.
            (vectorizable_load): Likewise.=