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 14EC5394D8BE; Tue,  8 Jun 2021 08:48:29 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 14EC5394D8BE
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/100951] vec_duplicate<mode> leads to worse code
Date: Tue, 08 Jun 2021 08:48:28 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: middle-end
X-Bugzilla-Version: 12.0
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: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-100951-4-KUC5RP58Jh@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-100951-4@http.gcc.gnu.org/bugzilla/>
References: <bug-100951-4@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, 08 Jun 2021 08:48:29 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100951

--- Comment #2 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:ffe3a37f54ab866d85bdde48c2a32be5e09d8515

commit r12-1280-gffe3a37f54ab866d85bdde48c2a32be5e09d8515
Author: Richard Biener <rguenther@suse.de>
Date:   Mon Jun 7 20:08:13 2021 +0200

    middle-end/100951 - make sure to generate VECTOR_CST in lowering

    When vector lowering creates piecewise ops make sure to create
    VECTOR_CSTs instead of CONSTRUCTORs when possible.

    gcc/

    2021-06-07  Richard Biener  <rguenther@suse.de>

            PR middle-end/100951
            * tree-vect-generic.c (expand_vector_piecewise): Build a
            VECTOR_CST if all elements are constant.
            (expand_vector_condition): Likewise.
            (lower_vec_perm): Likewise.
            (expand_vector_conversion): Likewise.

    gcc/testsuite/

    2021-06-07  H.J. Lu  <hjl.tools@gmail.com>

            PR middle-end/100951
            * gcc.target/i386/pr100951.c: New test.=