From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 66774382EA32; Thu, 27 Oct 2022 08:13:05 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 66774382EA32 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1666858385; bh=lCgc9/BGYp+H/LrlvHPMPEbAfDF1wg4LLXVlpwgYgH8=; h=From:To:Subject:Date:In-Reply-To:References:From; b=uECfwmR6gquRWz+Tk3txLosgmpi5R9OLbYkK5JPS9HJDL7VatjBJKEDMIGf5MLPeD 8ljGfD7kA4J3LwKTus+vbR1fn1I6P9LYfKmmIQIuF1gdiNATZYzWJ+fNfzSgR3IO3A AgOznBCwWl888NJyWSB3jONSJq+/59za7w5bO3cU= From: "marxin at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/107409] Perf loss ~5% on 519.lbm_r SPEC cpu2017 benchmark Date: Thu, 27 Oct 2022 08:13:03 +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: X-Bugzilla-Severity: normal X-Bugzilla-Who: marxin 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: 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=3D107409 --- Comment #3 from Martin Li=C5=A1ka --- Can you please share perf-profile before and after the revision? Note I can't see it for Altra aarch64 CPU: https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=3D633.477.0&plot.1= =3D683.477.0&plot.2=3D664.477.0&plot.3=3D648.477.0&plot.4=3D618.477.0&plot.= 5=3D605.477.0&plot.6=3D759.477.0&plot.7=3D584.477.0& However, there are huge changes in between GCC 6/7 and a newer releases. No= te the benchmark is pretty small and very sensitive to instruction caches.=