Revert "Remove the explicit SDNodeIterator::operator= in favor of the implicit default"

Accidentally committed a few more of these cleanup changes than
intended. Still breaking these out & tidying them up.

This reverts commit r231135.

llvm-svn: 231136

1 files changed, 0 insertions, 1 deletions

diff --git a/llvm/unittests/ADT/DenseMapTest.cpp b/llvm/unittests/ADT/DenseMapTest.cpp
index 9780777..f497983 100644
--- a/llvm/unittests/ADT/DenseMapTest.cpp
+++ b/llvm/unittests/ADT/DenseMapTest.cpp
@@ -46,7 +46,6 @@ public:
   CtorTester(const CtorTester &Arg) : Value(Arg.Value) {
     EXPECT_TRUE(Constructed.insert(this).second);
   }
-  CtorTester &operator=(const CtorTester &) = default;
   ~CtorTester() {
     EXPECT_EQ(1u, Constructed.erase(this));
   }