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, 3 insertions, 1 deletions

diff --git a/llvm/lib/Analysis/CFLAliasAnalysis.cpp b/llvm/lib/Analysis/CFLAliasAnalysis.cpp
index cf92bfeca10..82fbfe06aee 100644
--- a/llvm/lib/Analysis/CFLAliasAnalysis.cpp
+++ b/llvm/lib/Analysis/CFLAliasAnalysis.cpp
@@ -151,13 +151,15 @@ struct FunctionInfo {
 
 struct CFLAliasAnalysis;
 
-struct FunctionHandle final : public CallbackVH {
+struct FunctionHandle : public CallbackVH {
   FunctionHandle(Function *Fn, CFLAliasAnalysis *CFLAA)
       : CallbackVH(Fn), CFLAA(CFLAA) {
     assert(Fn != nullptr);
     assert(CFLAA != nullptr);
   }
 
+  virtual ~FunctionHandle() {}
+
   void deleted() override { removeSelfFromCache(); }
   void allUsesReplacedWith(Value *) override { removeSelfFromCache(); }