From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 2443E3857C52; Fri, 28 May 2021 12:45:21 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 2443E3857C52 From: "jl_gccbugs at conductive dot de" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/100801] Aggressive loop optimizations cause incorrect warning Date: Fri, 28 May 2021 12:45:21 +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: 11.1.0 X-Bugzilla-Keywords: diagnostic, missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: jl_gccbugs at conductive dot de 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: 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, 28 May 2021 12:45:21 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100801 --- Comment #2 from Joel Linn --- Great. In the meantime I will use=20 > if (count % 4 =3D=3D 0) __builtin_unreachable(); at the start of the for loop to suppress the warning as suggested by Martin Sebor https://gcc.gnu.org/pipermail/gcc-help/2021-May/140339.html=