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 B5B963858D35; Fri,  3 Sep 2021 01:31:33 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B5B963858D35
From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/98908] [11 Regression] arithmetic involving
 struct members into operating on the entire struct fails at -O3
Date: Fri, 03 Sep 2021 01:31:33 +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: 11.0
X-Bugzilla-Keywords: missed-optimization
X-Bugzilla-Severity: normal
X-Bugzilla-Who: pinskia 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: 11.3
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: short_desc target_milestone bug_status resolution
Message-ID: <bug-98908-4-SPTzOstK14@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-98908-4@http.gcc.gnu.org/bugzilla/>
References: <bug-98908-4@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, 03 Sep 2021 01:31:33 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98908

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Failure to optimize         |[11 Regression] arithmetic
                   |arithmetic involving struct |involving struct members
                   |members into operating on   |into operating on the
                   |the entire struct           |entire struct fails at -O3
   Target Milestone|9.0                         |11.3
             Status|RESOLVED                    |NEW
         Resolution|FIXED                       |---

--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Gabriel Ravier from comment #9)
> PS: I had missed at the time that the bug wasn't present in GCC 10/9/8
> though, so perhaps it should be considered as having been a GCC 11
> regression that got fixed in trunk ?

Oh -O2 is correct but -O3 is not.  I just assumed -O2 because you never said
what option you used.  It is fixed again on the trunk.  So this is still a
regression in GCC 11 series.=