From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 2139B385843D; Sun, 7 Nov 2021 18:59:48 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 2139B385843D From: "hubicka at kam dot mff.cuni.cz" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/102943] [12 Regression] Jump threader compile-time hog with 521.wrf_r Date: Sun, 07 Nov 2021 18:59:47 +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: compile-time-hog X-Bugzilla-Severity: normal X-Bugzilla-Who: hubicka at kam dot mff.cuni.cz 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: 12.0 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: Sun, 07 Nov 2021 18:59:48 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102943 --- Comment #27 from hubicka at kam dot mff.cuni.cz --- >=20 > This PR is still open, at least for slowdown in the threader with LTO. T= he > issue is ranger wide, so it may also cause slowdowns on non-LTO builds f= or > WRF, though I haven't checked. I just wanted to record the fact somewhere since I was looking up the revision range mostly to figure out if there was modref change that may cause this. Non-lto builds seems fine. I suppose LTo is needed ot make bug enough CFGs. Thanks for looking into it. Honza=