Add operator== for DefinedAtom::reference_iterator. NFC.

This will be used by a future commit which wanted to compare iterators
for equality.

Also changed operator!= to be in terms of the new operator==

llvm-svn: 259431

diff --git a/lld/include/lld/Core/DefinedAtom.h b/lld/include/lld/Core/DefinedAtom.h
index 47891b9..f0cf608 100644 (file)
--- a/lld/include/lld/Core/DefinedAtom.h
+++ b/lld/include/lld/Core/DefinedAtom.h
@@ -308,8 +308,12 @@ public:
       return _atom.derefIterator(_it);
     }
 
+    bool operator==(const reference_iterator &other) const {
+      return _it == other._it;
+    }
+
     bool operator!=(const reference_iterator &other) const {
-      return _it != other._it;
+      return !(*this == other);
     }
 
     reference_iterator &operator++() {