https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66675
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Note for this optimization to be useful there needs to be a heurstic to find out if folding CONSTRUCTOR + VECTOR_CST is going to be only one or no other add. Or using one element of the whole vector. AKA it might not be profit able to fold CONSTRUCTOR + VECTOR_CST to CONSTRUCTOR with all scalar additions.
