Document purpose of ProgramPointTag::getTagKind().

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@137530 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/clang/Analysis/ProgramPoint.h b/include/clang/Analysis/ProgramPoint.h
index 0e6a659e3909e122cbaf091e667c7bb565f1d876..71e27c6df0ee9fbc8dbb2e6afe3116c8c7846966 100644 (file)
--- a/include/clang/Analysis/ProgramPoint.h
+++ b/include/clang/Analysis/ProgramPoint.h
@@ -387,6 +387,7 @@ public:
   virtual StringRef getTagDescription() const = 0;    
 
 protected:
+  /// Used to implement 'classof' in subclasses.
   const void *getTagKind() { return TagKind; }
   
 private: