From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id E11F33858D1E; Sat, 22 Jul 2023 11:41:40 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org E11F33858D1E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1690026100; bh=a1WXYoYS/oiY92Zv7fYcj6b1L7A2uxVjaX0a7jJ8o4A=; h=From:To:Subject:Date:In-Reply-To:References:From; b=OEVElcMXNg1ZPmCNM/Xc2/2RPni5zkf9X3OG4vntCka9o2q/T2cW1ObDt24Q8U7fR rc/w/p9R9dydccj0tJTFQrpJPC5lyLULrcTSI9AzpmzBUmCs1xPZQHq5w5fr0p3k4U NpYouNukmTkMic64kVTI6P8VVSWXB002TJunB/E8= From: "jamborm at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/110757] [14 Regression] 7% parest regression on zen3 -Ofast -march=native -flto between g:4dbb3af1efe55174 (2023-07-14 00:54) and g:a5088dc3f5ef73c8 (2023-07-17 03:24) Date: Sat, 22 Jul 2023 11:41:39 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Version: 14.0 X-Bugzilla-Keywords: missed-optimization, needs-bisection X-Bugzilla-Severity: normal X-Bugzilla-Who: jamborm at gcc dot gnu.org 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: 14.0 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc cf_reconfirmed_on bug_status everconfirmed 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=3D110757 Martin Jambor changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |lili.cui at intel dot com, | |rguenth at gcc dot gnu.org Last reconfirmed| |2023-07-22 Status|UNCONFIRMED |NEW Ever confirmed|0 |1 --- Comment #3 from Martin Jambor --- And while I am at it, the 2.5% slowdown in April was caused by Richi's r14-332-g24905a4bd1375c (Adjust costing of emulated vectorized gather/scatter) and the 2.8% regression in May by 2.8% is caused by r14-1371-ge5405f065bace0 (Handle FMA friendly in reassoc pass). Both are small and so may not warrant their own bug-report but together they make up almost 6% and we are now 13% slower than GCC 13 on zen 3 and 2 (on the Intel machine in LNT it is just 2.7% and I see no regression on the Aarch64 one).=