-- What we really care about here is that on the entry to B3, %r1 will always
-- have the same value that is in SLOT(0) (ie, %r1 is _valid_)
--
-- What we really care about here is that on the entry to B3, %r1 will always
-- have the same value that is in SLOT(0) (ie, %r1 is _valid_)
--