- /* If we are at a leaf node in the dominator tree, see if we can thread
- the edge from BB through its successor.
-
- Do this before we remove entries from our equivalence tables. */
+ /* If we have an outgoing edge to a block with multiple incoming and
+ outgoing edges, then we may be able to thread the edge. ie, we
+ may be able to statically determine which of the outgoing edges
+ will be traversed when the incoming edge from BB is traversed. */