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From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/82735] _mm256_zeroupper does not invalidate previously
 computed registers
Date: Wed, 28 Apr 2021 09:07:54 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D82735

--- Comment #8 from Uro=C5=A1 Bizjak <ubizjak at gmail dot com> ---
(In reply to Hongtao.liu from comment #7)
> Confirmed, let me fix this.

Please note that the current definition of vzeroupper does not model effect=
s of
the instruction at all. The current definition is intended to handle automa=
tic
vzeroupper insertion, and the builtin somehow slipped out of the mind...=