From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 330FC3858C41; Thu, 20 Jun 2024 06:35:14 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 330FC3858C41 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1718865314; bh=A7AQqxeUVPQ7t+38VZBu1SX9satx9T1sxIrL9imBP7E=; h=From:To:Subject:Date:In-Reply-To:References:From; b=J+9ekItW+vBQB6L/3RANMIcebrB+eP42DzANFWkVvcrYDn7hdlBs5wwXoE48p3WrN DLbCxBpSmZCZ33wJs4UIdhyVU6ESY4W7buNedNboUjcx6zTtqgCR+MMONsWvH4tiUJ +Yln/zxd5EjEzvch1vzHs2T+OfEX8qBFnEhghH7k= From: "lin1.hu at intel dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/115462] [15 regression] 416.gamess regressed 4-6% on x86_64 since r15-882-g1d6199e5f8c1c0 Date: Thu, 20 Jun 2024 06:35:13 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Version: 15.0 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: lin1.hu at intel dot com 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: 15.0 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: attachments.created 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=3D115462 --- Comment #4 from Hu Lin --- Created attachment 58470 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D58470&action=3Dedit A short case I tested the file with 1) -Ofast -flto -march=3Dskylake-avx512 -mfpmath=3Dsse -funroll-loops 2) -O2 -march=3Dnative =EF=BC=88on an Icelake server) Both generate redundant mov.=