From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 636783858C60; Mon, 21 Feb 2022 09:44:17 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 636783858C60 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/104604] [12 Regression]wrong code with -O2 VRP Complex integer division issue Date: Mon, 21 Feb 2022 09:44:17 +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: 12.0 X-Bugzilla-Keywords: needs-bisection, wrong-code X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 12.0 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: priority 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: Mon, 21 Feb 2022 09:44:17 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104604 Richard Biener changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P3 |P1 --- Comment #2 from Richard Biener --- The EVRP dump with -details isn't very useful, we just see the folding/substitution phase: Folding statement: t_5 =3D __complex__ (3, 0) / c_4(D); Not folded Folding statement: v_7 =3D g; Not folded Folding statement: _1 =3D REALPART_EXPR ; Queued stmt for removal. Folds to: 3 and that looks obviously wrong.=