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From: "amonakov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/104688] gcc and libatomic can use SSE for 128-bit atomic loads on Intel and AMD CPUs with AVX
Date: Mon, 28 Nov 2022 20:11:20 +0000	[thread overview]
Message-ID: <bug-104688-4-4nLfkY0TkK@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-104688-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104688

--- Comment #26 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Sure, the right course of action seems to be to simply document that atomic
types and built-ins are meant to be used on "common" (writeback) memory, and no
guarantees can be given otherwise, because it would involve platform specifics
(relaxed ordering of WC writes as you say; tearing by PCI bridges and device
interfaces seems like another possible caveat).

  parent reply	other threads:[~2022-11-28 20:11 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-25 14:22 [Bug target/104688] New: gcc and libatomic can use SSE for 128-bit atomic loads on Intel " xry111 at mengyan1223 dot wang
2022-02-25 14:30 ` [Bug target/104688] " jakub at gcc dot gnu.org
2022-02-25 14:33 ` xry111 at mengyan1223 dot wang
2022-02-25 14:34 ` fw at gcc dot gnu.org
2022-02-25 16:36 ` jakub at gcc dot gnu.org
2022-02-25 16:37 ` jakub at gcc dot gnu.org
2022-03-17 17:50 ` cvs-commit at gcc dot gnu.org
2022-03-29  5:54 ` cvs-commit at gcc dot gnu.org
2022-04-05 12:30 ` xry111 at mengyan1223 dot wang
2022-04-05 12:35 ` jakub at gcc dot gnu.org
2022-11-14  3:31 ` Ganesh.Gopalasubramanian at amd dot com
2022-11-14  4:58 ` sam at gentoo dot org
2022-11-14  5:10 ` [Bug target/104688] gcc and libatomic can use SSE for 128-bit atomic loads on Intel and AMD " xry111 at gcc dot gnu.org
2022-11-14  7:54 ` jakub at gcc dot gnu.org
2022-11-14  9:24 ` amonakov at gcc dot gnu.org
2022-11-14  9:29 ` jakub at gcc dot gnu.org
2022-11-14  9:52 ` amonakov at gcc dot gnu.org
2022-11-15  7:18 ` cvs-commit at gcc dot gnu.org
2022-11-15  7:20 ` jakub at gcc dot gnu.org
2022-11-20 23:11 ` cvs-commit at gcc dot gnu.org
2022-11-21  9:23 ` cvs-commit at gcc dot gnu.org
2022-11-23  9:18 ` xry111 at gcc dot gnu.org
2022-11-23  9:51 ` jakub at gcc dot gnu.org
2022-11-23 10:23 ` xry111 at gcc dot gnu.org
2022-11-28 18:35 ` peter at cordes dot ca
2022-11-28 18:46 ` amonakov at gcc dot gnu.org
2022-11-28 19:03 ` peter at cordes dot ca
2022-11-28 20:11 ` amonakov at gcc dot gnu.org [this message]
2022-11-28 20:47 ` peter at cordes dot ca
2022-11-29  8:11 ` fw at gcc dot gnu.org
2023-02-15 12:27 ` segher at gcc dot gnu.org
2023-02-15 12:46 ` fw at gcc dot gnu.org
2023-02-15 16:03 ` segher at gcc dot gnu.org
2023-02-15 16:07 ` pinskia at gcc dot gnu.org
2023-02-15 16:09 ` segher at gcc dot gnu.org

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