From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id CBC693858D35; Fri, 3 Sep 2021 00:41:25 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org CBC693858D35 From: "gabravier at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/98908] Failure to optimize arithmetic involving struct members into operating on the entire struct Date: Fri, 03 Sep 2021 00:41:25 +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: gabravier at gmail dot com X-Bugzilla-Status: WAITING 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: In-Reply-To: References: 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 03 Sep 2021 00:41:25 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98908 --- Comment #6 from Gabriel Ravier --- Also the second example wasn't misoptimized, on the contrary it was the most reasonable portable function I could write that would work equivalently to = the first *and* that GCC would optimize ideally.=