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 92D02385740D; Fri, 13 May 2022 01:04:09 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 92D02385740D
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/102583] [x86] Failure to optimize 32-byte
 integer vector conversion to 16-byte float vector properly when converting
 upper part with -mavx2
Date: Fri, 13 May 2022 01:04:09 +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: 12.0
X-Bugzilla-Keywords: missed-optimization
X-Bugzilla-Severity: normal
X-Bugzilla-Who: cvs-commit 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: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-102583-4-rBa8L1iwFK@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-102583-4@http.gcc.gnu.org/bugzilla/>
References: <bug-102583-4@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, 13 May 2022 01:04:09 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102583

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by hongtao Liu <liuhongt@gcc.gnu.org>:

https://gcc.gnu.org/g:8ab4b484153031c407b7d8c760b6a2605da1199a

commit r13-379-g8ab4b484153031c407b7d8c760b6a2605da1199a
Author: liuhongt <hongtao.liu@intel.com>
Date:   Fri Apr 8 11:26:46 2022 +0800

    Strip of a vector load which is only used partially.

    Optimize

      _4 =3D VEC_PERM_EXPR <_1, _1, { 4, 5, 6, 7, 4, 5, 6, 7 }>;
      _5 =3D BIT_FIELD_REF <_4, 128, 0>;

    to

      _5 =3D BIT_FIELD_REF <_1, 128, 128>;

    gcc/ChangeLog:

            PR tree-optimization/102583
            * tree-ssa-forwprop.cc (simplify_bitfield_ref): Extended to a
            contiguous stride in the VEC_PERM_EXPR.

    gcc/testsuite/ChangeLog:

            * gcc.target/i386/pr102583.c: New test.
            * gcc.target/i386/pr92645-2.c: Adjust testcase.
            * gcc.target/i386/pr92645-3.c: Ditto.=