[MBP] Clean up of the comments, and a first attempt to better describe a part
of the algorithm.

Differential Revision: https://reviews.llvm.org/D22364


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275595 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed