moves doInitialization and doFinalization to the Pass class and removes some unreachable code in MachineModuleInfo

reviewed by Evan Cheng <evan.cheng@apple.com>



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169164 91177308-0d34-0410-b5e6-96231b3b80d8
8 files changed