The article referenced in the comments is very cool: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.83.5786&rep=rep1&type=pdf http://citeseerx.ist.ps

The article referenced in the comments is very cool: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.83.5786&rep=rep1&type=pdf http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.83.... It seems related to certain pipeline bypass structures.