Sorry I don't have the full context. It seems like some kind of pattern matching over instructions to put them in bundles. I think it could be one of those ca

Sorry I don't have the full context. It seems like some kind of pattern matching over instructions to put them in bundles. I think it could be one of those cases where if you had a more obvious representation you wouldn't need a clever algorithm, but there is probably some other reason (good or not) that instructions are represented that way