Couldn't find an issue (somewhat related #15942)

It would be great to be able to inline functions at callsite

function f(x)
     y = x + 2
     @inline z = g(y)
     return z + y
end

This would be nice since it prevents having to rewrite the function g(x) to be a 'private' function that is always inlined with @inline and then having to rewriting a corresponding public function g_public(x) that just calls private g(x) function that is always inlined.