Turns out AnalyzeBranch can modify the mbb being analyzed. This is a nasty
suprise to some callers, e.g. register coalescer. For now, add an parameter
that tells AnalyzeBranch whether it's safe to modify the mbb. A better
solution is out there, but I don't have time to deal with it right now.

llvm-svn: 64124
16 files changed
tree: a65b8ff7aae06eaaecfa02a7ace3f35c833d67e5
  1. clang/
  2. llvm/