From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id C02A3393AD17; Sun, 11 Dec 2022 12:27:00 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org C02A3393AD17 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1670761620; bh=4rRIl8ZET8y0YJzah2TLluqrMVkT7tWTCGRn5Uy5ufo=; h=From:To:Subject:Date:In-Reply-To:References:From; b=h/CqcB+MiI5TaiDvm3aXUZRCEW2UMS66X7PXilZgkEqEGlTG4Il8zmGk0TSs5L1XP iskV/kpT1C+nhGbQWWKdNtRdden+E6bHFX3S98XvKB9cAh4EMtapqby5GIpU+7fPWZ swzUfOePrw088Dgw3arKg6OpYePuMUekE+AJ1reo= From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/108041] ivopts results in extra instruction in simple loop Date: Sun, 11 Dec 2022 12:26:59 +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: 13.0 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED 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: keywords 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 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108041 Richard Biener changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |missed-optimization --- Comment #1 from Richard Biener --- I think IVOPTs does not consider the use on the exit edge and its effect on liveness but it does consider both IVs.=