[Bug target/101464] Replace zveroupper with vpxor

[crazylht at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101464

Hongtao.liu <crazylht at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |crazylht at gmail dot com

--- Comment #1 from Hongtao.liu <crazylht at gmail dot com> ---
>From the implementation perspective, we need to record all usage of sse
registers which is AVX_U128_DIRTY and clear them all.