[Bug target/83488] [8 Regression] ICE on a CET test-case

[igor.v.tsimbalist at intel dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83488

--- Comment #18 from igor.v.tsimbalist at intel dot com ---
Added a patch for m512vnni, which is done similarly to 512vbmi2. It looks like
most of avx512* bits have to be included in OPTION_MASK_ISA_AVX512F_UNSET. I
leave it to a separate revision of mask bits. Doing building and testing.