This patch implements transform for pattern "(A | B) & ((~A) ^ B) -> (A & B)".

Differential Revision: http://reviews.llvm.org/D4628



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214478 91177308-0d34-0410-b5e6-96231b3b80d8