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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/114987] [14/15 Regression] floating point vector regression, x86, between gcc 14 and gcc-13 using -O3 and target clones on skylake platforms Date: Fri, 10 May 2024 08:00:03 +0000 [thread overview] Message-ID: <bug-114987-4-GVMAXviCFk@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-114987-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114987 --- Comment #5 from Haochen Jiang <haochen.jiang at intel dot com> --- What I have found is that the binary built with GCC13 and GCC14 will regress on Cascadelake and Skylake. But when I copied the binary to Icelake, it won't. Seems Icelake might fix this with micro-tuning. I tried to move "vmovdqa %xmm1,0xd0(%rsp)" before "vmovdqa %xmm0,0xe0(%rsp)" and rebuilt the binary and it will save half the regression.
next prev parent reply other threads:[~2024-05-10 8:00 UTC|newest] Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-05-08 14:44 [Bug c/114987] New: " colin.king at intel dot com 2024-05-08 14:45 ` [Bug c/114987] " colin.king at intel dot com 2024-05-08 14:45 ` colin.king at intel dot com 2024-05-08 15:00 ` colin.king at intel dot com 2024-05-10 7:52 ` [Bug target/114987] [14/15 Regression] " rguenth at gcc dot gnu.org 2024-05-10 8:00 ` haochen.jiang at intel dot com [this message] 2024-05-10 8:05 ` liuhongt at gcc dot gnu.org 2024-05-10 8:42 ` haochen.jiang at intel dot com
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