[Bug target/93696] AVX512VPOPCNTDQ writemask intrinsics produce incorrect results

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93696

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 47821
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47821&action=edit
gcc10-pr93696.patch

Untested fix.