[Bug target/100085] Bad code for union transfer from __float128 to vector types

[segher at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100085

--- Comment #3 from Segher Boessenkool <segher at gcc dot gnu.org> ---
The rotates in 6 and 7 are not merged, and neither are the vec_selects in
8 and 9.  Both should be pretty easy to do, there is no unspec in sight,
etc.