Michael Gottesman 5c86053f69 [objc-arc] Create two subclasses of PtrState in preparation for moving per ptr state change behavior onto a PtrState class.
This will enable the main ObjCARCOpts dataflow to work with higher
level concepts such as "can this ptr state be modified by this ref
count" and not need to understand the nitty gritty details of how that
is determined. This makes the dataflow cleaner.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231437 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-06 00:34:36 +00:00
..