diff --git a/llvm/lib/CodeGen/CodeGenPrepare.cpp b/llvm/lib/CodeGen/CodeGenPrepare.cpp
--- a/llvm/lib/CodeGen/CodeGenPrepare.cpp
+++ b/llvm/lib/CodeGen/CodeGenPrepare.cpp
@@ -3062,6 +3062,9 @@
 
     ~InstructionRemover() override { delete Replacer; }
 
+    InstructionRemover &operator=(const InstructionRemover &other) = delete;
+    InstructionRemover(const InstructionRemover &other) = delete;
+
     /// Resurrect the instruction and reassign it to the proper uses if
     /// new value was provided when build this action.
     void undo() override {