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 DCB193970821; Fri, 23 Apr 2021 07:35:55 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org DCB193970821
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/99971] GCC generates partially vectorized and
 scalar code at once
Date: Fri, 23 Apr 2021 07:35:55 +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: 10.2.0
X-Bugzilla-Keywords: missed-optimization
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: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-99971-4-Buop5BRbgJ@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-99971-4@http.gcc.gnu.org/bugzilla/>
References: <bug-99971-4@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, 23 Apr 2021 07:35:56 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99971

--- Comment #8 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:700e542971251b11623cce877075567815f72965

commit r12-79-g700e542971251b11623cce877075567815f72965
Author: Richard Biener <rguenther@suse.de>
Date:   Fri Apr 9 09:35:51 2021 +0200

    tree-optimization/99971 - improve BB vect dependence analysis

    We can use TBAA even when we have a DR, do so.  For the testcase
    that means fully vectorizing it instead of only vectorizing
    the first store group resulting in suboptimal code.

    2021-04-09  Richard Biener  <rguenther@suse.de>

            PR tree-optimization/99971
            * tree-vect-data-refs.c (vect_slp_analyze_node_dependences):
            Always use TBAA for loads.

            * g++.dg/vect/slp-pr99971.cc: New testcase.=