From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 86B753858CDB; Sun, 24 Sep 2023 03:54:55 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 86B753858CDB DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1695527695; bh=2OCQFVBUElZX64K8bS66jXivreYtMUEqzBXVqecOSdo=; h=From:To:Subject:Date:In-Reply-To:References:From; b=pjHM7XwGOcDyPHEDKh6cehzSYpBeHbqrNlVSBI+FXSjHwq2jZ7F05J0Es2IB6iCw9 W9+CW0xDku63KoQHGS/ibUVN6TTyNHL+Coqdu+XTZeNMj8U3w4fqDcmrxPMJPj9OQA BisvAlke6rLM4ycv+bpJGv+cvRgFlyEIvDlKXit8= From: "pinskia at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/111563] Missed optimization of LICM Date: Sun, 24 Sep 2023 03:54:55 +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: 14.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: pinskia at gcc dot gnu.org X-Bugzilla-Status: RESOLVED X-Bugzilla-Resolution: INVALID 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: resolution bug_status 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=3D111563 Andrew Pinski changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |INVALID Status|UNCONFIRMED |RESOLVED --- Comment #1 from Andrew Pinski --- _5 =3D var_0_16(D) + var_6_18(D); invariant up to level 1, cost 1. Basically because the cost is not high enough ... If you use --param=3Dlim-expensive=3D1. then it will pull it out of the l= oop. So the cost model is doing the correct thing here ...=