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 EB076398D04B; Fri, 21 May 2021 14:28:07 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org EB076398D04B
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/90773] Improve piecewise operation
Date: Fri, 21 May 2021 14:28:07 +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: 10.0
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-90773-4-mQM640wzfs@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-90773-4@http.gcc.gnu.org/bugzilla/>
References: <bug-90773-4@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, 21 May 2021 14:28:08 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D90773

--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by H.J. Lu <hjl@gcc.gnu.org>:

https://gcc.gnu.org/g:53fb833d635da04f5b44af16bcea1082e7b59e75

commit r12-978-g53fb833d635da04f5b44af16bcea1082e7b59e75
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Fri May 21 05:16:20 2021 -0700

    Elide expand_constructor if move by pieces is preferred

    Elide expand_constructor when the constructor is static storage and not
    mostly zeros and we can move it by pieces prefer to do so since that's
    usually more efficient than performing a series of stores from immediat=
es.

    2021-05-21  Richard Biener  <rguenther@suse.de>
                H.J. Lu  <hjl.tools@gmail.com>

    gcc/

            PR middle-end/90773
            * expr.c (expand_constructor): Elide expand_constructor if
            move by pieces is preferred.

    gcc/testsuite/

            * gcc.target/i386/pr90773-24.c: New test.
            * gcc.target/i386/pr90773-25.c: Likewise.=