From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id DE065385AC37; Wed, 18 Aug 2021 21:57:35 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org DE065385AC37 From: "pinskia at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/73457] Missed optimizations: count_if on std::array of constants. Date: Wed, 18 Aug 2021 21:57:35 +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: 6.1.0 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: --- 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: Wed, 18 Aug 2021 21:57:36 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D73457 --- Comment #2 from Andrew Pinski --- testcase: #include #include enum event { stuff, crap }; template auto count_event(event e, Cont const& events) { return std::count(events.begin(), events.end(), e); } int main() { std::array events =3D { stuff, crap, stuff, stuff }; return count_event(stuff, events); }=