ref: b07ae88ec490cde22ce16435b038822d442f7163
parent: 0ac2139d02d0b9ac91ac44cb98dc12f460a47beb
author: Dmitry Kovalev <dkovalev@google.com>
date: Thu Mar 6 07:47:55 EST 2014
Cleaning up optimize_b() function. Change-Id: Id4c5b73ad747a8851969e9daf5bac40b4b9beefc