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From: "rvmallad at amazon dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/107413] Perf loss ~14% on 519.lbm_r SPEC cpu2017 benchmark with r8-7132-gb5b33e113434be
Date: Mon, 07 Nov 2022 07:42:00 +0000 [thread overview]
Message-ID: <bug-107413-4-mr0VzVlwgL@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-107413-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107413
--- Comment #11 from Rama Malladi <rvmallad at amazon dot com> ---
(In reply to Wilco from comment #10)
> I'm seeing about 1.5% gain on Neoverse V1 and 0.5% loss on Neoverse N1. I'll
> post a patch that allows per-CPU settings for FMA reassociation, so you'll
> get good performance with -mcpu=native. However reassociation really needs
> to be taught about the existence of FMAs.
Thank you very much Wilco.
next prev parent reply other threads:[~2022-11-07 7:42 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-26 9:16 [Bug tree-optimization/107413] New: Perf loss ~14% on 519.lbm_r SPEC cpu2017 benchmark rvmallad at amazon dot com
2022-10-26 9:20 ` [Bug tree-optimization/107413] " rvmallad at amazon dot com
2022-10-26 11:47 ` wilco at gcc dot gnu.org
2022-10-26 19:03 ` rvmallad at amazon dot com
2022-10-27 12:19 ` mark at gcc dot gnu.org
2022-10-28 10:41 ` rvmallad at amazon dot com
2022-10-28 10:46 ` rvmallad at amazon dot com
2022-11-01 12:48 ` [Bug tree-optimization/107413] Perf loss ~14% on 519.lbm_r SPEC cpu2017 benchmark with r8-7132-gb5b33e113434be wilco at gcc dot gnu.org
2022-11-02 0:29 ` rvmallad at amazon dot com
2022-11-02 23:39 ` rvmallad at amazon dot com
2022-11-04 17:26 ` wilco at gcc dot gnu.org
2022-11-07 7:42 ` rvmallad at amazon dot com [this message]
2022-11-24 13:30 ` cvs-commit at gcc dot gnu.org
2022-11-28 8:33 ` rvmallad at amazon dot com
2022-11-29 9:04 ` rvmallad at amazon dot com
2022-11-29 12:55 ` wilco at gcc dot gnu.org
2022-11-30 4:15 ` rvmallad at amazon dot com
2022-12-01 13:13 ` wilco at gcc dot gnu.org
2022-12-01 16:33 ` rvmallad at amazon dot com
2022-12-02 2:30 ` rvmallad at amazon dot com
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