Added smart pointer class "IntrusiveSPtr" that handles reference
counted objects that maintain their own internal reference count.
This smart pointer implementation is compatible with LLVM-style
down-casting (see in llvm: include/llvm/Support/Casting.h).
Implemented "RefCounted", a base class that objects that wish to be
managed using IntrusiveSPtrs can subclass.
Reference counted objects are being targeted for use in path-sensitive
dataflow analyses where managing many live objects becomes difficult.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@42260 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed