[Pharo-project] is there an easy way to know the SmallInteger instances?

If I do SmallInteger alIInstances I get an empty array, and of course, with SmallInteger instanceCount I get zero. Now, I can understand that from the VM point of view, but for the final user, this should be polymorphic. For example, for instanceCount, I would like to know all the "variable slots" that has a 1 in the last bit. Is this already possible? if true, which message? if not, should I hack in the vm and code a primitive that does this? And the same for allInstances, if I can inspect 5, I should be also to inspect SmallInteger allInstances, and SmallInteger allInstances first, etc.... thanks Mariano