[Bug target/91796] Sub-optimal YMM register allocation.

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91796

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
And as for the constant, seems ICC also emits just constant load from memory
instead of trying two instructions instead and clang, while it uses broadcast
to save .rodata, doesn't use two instructions either:
https://godbolt.org/z/MekI1X