[Bug target/80566] no use of avx vmovups on ymm registry in set and copy

[vladimir.solontsov at mlp dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80566

--- Comment #2 from Vlad <vladimir.solontsov at mlp dot com> ---
I can confirm this for gcc7.1/7.2 with -O3 -g -mavx2:
https://godbolt.org/g/h7TNJV