Checkin some major reworks of data structure analysis.  This is not done,
nor does it work very well, but I need to get it checked in before I break
the tree unintentionally.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3996 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed