Masked Load and Store Intrinsics in loop vectorizer.
The loop vectorizer optimizes loops containing conditional memory
accesses by generating masked load and store intrinsics.
This decision is target dependent.

http://reviews.llvm.org/D6527



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224334 91177308-0d34-0410-b5e6-96231b3b80d8