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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/54412] minimal 32-byte stack alignment with -mavx on 64-bit Windows
Date: Fri, 01 Apr 2022 17:59:42 +0000 [thread overview]
Message-ID: <bug-54412-4-ICZu1dOIrB@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-54412-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54412
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #36 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
That patch is certainly unacceptable, not only because it affects non-Windows
too, but even on Windows it will unnecessarily pessimize e.g. accesses to data
sections or heap that can be aligned.
If the Windows ABI doesn't align stack or not as much as gcc assumes, then a
fix would ensure only automatic vars on Windows are accessed always using
unaligned vector instructions provided dynamic stack realignment is not an
option.
next prev parent reply other threads:[~2022-04-01 17:59 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-30 1:10 [Bug target/54412] New: Request for 32-byte stack alignment with -mavx on Windows rcopley at gmail dot com
2013-09-10 10:30 ` [Bug target/54412] " ktietz at gcc dot gnu.org
2013-09-10 17:26 ` rcopley at gmail dot com
2013-09-10 17:49 ` rcopley at gmail dot com
2014-09-03 21:17 ` roland at rschulz dot eu
2014-09-04 22:49 ` rcopley at gmail dot com
2014-09-05 1:42 ` roland at rschulz dot eu
2014-09-05 18:40 ` rcopley at gmail dot com
2014-09-05 18:44 ` rcopley at gmail dot com
2014-09-21 1:08 ` rcopley at gmail dot com
2015-09-22 10:51 ` ktietz at gcc dot gnu.org
2021-08-23 3:12 ` [Bug target/54412] minimal 32-byte stack alignment with -mavx on 64-bit Windows arthur200126 at gmail dot com
2021-08-25 5:38 ` dimula73 at gmail dot com
2021-09-26 7:15 ` mehdi.chinoune at hotmail dot com
2022-04-01 15:01 ` lists at coryfields dot com
2022-04-01 15:38 ` ebotcazou at gcc dot gnu.org
2022-04-01 16:27 ` steve at sk2 dot org
2022-04-01 17:59 ` jakub at gcc dot gnu.org [this message]
2022-04-01 20:25 ` ebotcazou at gcc dot gnu.org
2022-04-01 20:50 ` rcopley at gmail dot com
2022-04-01 21:00 ` ebotcazou at gcc dot gnu.org
2022-04-20 14:41 ` hjl.tools at gmail dot com
2024-01-09 10:15 ` ebotcazou at gcc dot gnu.org
2024-03-26 15:12 ` avraham.adler at gmail dot com
2024-03-27 17:42 ` dimula73 at gmail dot com
2024-03-28 17:30 ` avraham.adler at gmail dot com
2024-03-28 20:26 ` ebotcazou at gcc dot gnu.org
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