[Bug target/88465] AVX512: optimize loading of constant values to kN registers

[bugzi...@poradnik-webmastera.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88465

--- Comment #3 from Daniel Fruzynski <bugzi...@poradnik-webmastera.com> ---
This "null" ia an icc bug. Matt Godbolt from Compiler Explorer filed a bug with
Intel: ref 03997020