[Bug tree-optimization/122679] simplify_vector_constructor () doesn't emit VEC_PERMs for non-vector modes

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122679

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #4)
> See https://gcc.gnu.org/pipermail/gcc-patches/2025-November/700465.html also.

Specifically:
https://gcc.gnu.org/pipermail/gcc-patches/2025-November/700481.html