Sat Nov 12 18:12:25 EST 2011

Pulling in word defs

There is currently no dead code elimination for globally defined
words.  Maybe this should be done differently.  The current ad-hoc way
of building control flow graphs is a bit of a hack..

It also doesn't include jump tables.  Maybe the (lack of) language
semantics is just a bit too low level.

So, how can I implement this without getting into muddy waters?

One way is to build an extended compilation state that records a
reference to the word (present / not), and adds a definition to
another word chain when it doesn't find a definition, just like
org-begin and org-end do.