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From: "haochen.jiang at intel dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug target/115069] 8 bit integer vector performance regression, x86, between gcc-14 and gcc-13 using avx2 target clones on skylake platform Date: Wed, 15 May 2024 08:51:13 +0000 [thread overview] Message-ID: <bug-115069-4-W5svwJs4xc@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-115069-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115069 Haochen Jiang <haochen.jiang at intel dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |haochen.jiang at intel dot com --- Comment #3 from Haochen Jiang <haochen.jiang at intel dot com> --- From my investigation, GCC14 generates some perm instructions, which caused data dependency. Going to bisect which commit caused this issue.
next prev parent reply other threads:[~2024-05-15 8:51 UTC|newest] Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-05-13 13:05 [Bug target/115069] New: " colin.king at intel dot com 2024-05-13 13:07 ` [Bug target/115069] " colin.king at intel dot com 2024-05-13 13:07 ` colin.king at intel dot com 2024-05-15 8:51 ` haochen.jiang at intel dot com [this message] 2024-05-16 1:49 ` [Bug target/115069] [14/15 regression] " sjames at gcc dot gnu.org 2024-05-17 6:59 ` kkanas at fastmail dot com 2024-05-17 7:06 ` liuhongt at gcc dot gnu.org 2024-05-17 7:08 ` haochen.jiang at intel dot com 2024-05-17 8:26 ` ubizjak at gmail dot com 2024-05-17 8:41 ` ubizjak at gmail dot com 2024-05-17 8:48 ` ubizjak at gmail dot com 2024-05-17 9:13 ` haochen.jiang at intel dot com 2024-05-20 1:23 ` liuhongt at gcc dot gnu.org 2024-05-20 5:50 ` haochen.jiang at intel dot com 2024-05-20 6:27 ` ubizjak at gmail dot com 2024-05-20 6:35 ` liuhongt at gcc dot gnu.org 2024-05-20 6:38 ` haochen.jiang at intel dot com 2024-05-20 6:40 ` liuhongt at gcc dot gnu.org 2024-05-20 6:47 ` ubizjak at gmail dot com 2024-05-21 5:56 ` haochen.jiang at intel dot com 2024-05-21 5:58 ` haochen.jiang at intel dot com 2024-05-22 2:25 ` cvs-commit at gcc dot gnu.org 2024-05-22 2:27 ` cvs-commit at gcc dot gnu.org 2024-05-22 2:27 ` haochen.jiang at intel dot com 2024-05-22 5:13 ` liuhongt at gcc dot gnu.org
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