This makes them more flexible, especially with Go 1.17 making the
situation more complicated (see
https://github.com/golang/go/commit/1d20a362d0ca4898d77865e314ef6f73582daef0).
It also makes it possible to do the same for many other functions, such
as assembly implementations of cryptographich functions which are
similarly dependent on the architecture.
Ayke van Laethem