[ADT] add iterator_range::empty()

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@361944 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/ADT/iterator_range.h b/include/llvm/ADT/iterator_range.h
index 774c7c4e3366e503ebd9972a84053ddf6ff4e8ec..aa8830943cabc189ea8f5883bf1fffd716cb6b7f 100644 (file)
--- a/include/llvm/ADT/iterator_range.h
+++ b/include/llvm/ADT/iterator_range.h
@@ -44,6 +44,7 @@ public:
 
   IteratorT begin() const { return begin_iterator; }
   IteratorT end() const { return end_iterator; }
+  bool empty() const { return begin_iterator == end_iterator; }
 };
 
 /// Convenience function for iterating over sub-ranges.