[RABasic] Properly initialize the pass

Use the initializeXXX method to initialize the RABasic pass in the
pipeline. This enables us to take advantage of the .mir infrastructure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@304602 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed