[Bug target/100310] [AVX512] Missing support for v{,p}expand* instructions that w/o mask operands

[crazylht at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100310

--- Comment #2 from Hongtao.liu <crazylht at gmail dot com> ---
w/o mask operands, v{,p}expand* are equal to mov instructions.