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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/104688] gcc and libatomic can use SSE for 128-bit atomic
 loads on Intel CPUs with AVX
Date: Tue, 05 Apr 2022 12:35:27 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104688

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Besides missing AMD response, it isn't fully fixed, because the change is on
the libatomic side only.
So we still pay the cost to call those functions (and often PLT cost too) a=
nd
return from them.
For GCC 13, we should add some option that optionally reverts the change to=
 use
library calls all the time, and default that option for -march=3D Intel CPU=
s with
AVX support or something similar (perhaps only if AVX is also enabled).=