diff --git a/llvm/include/llvm/Transforms/IPO/Attributor.h b/llvm/include/llvm/Transforms/IPO/Attributor.h
index f46970740ea27a..ec10c5c3ddb176 100644
--- a/llvm/include/llvm/Transforms/IPO/Attributor.h
+++ b/llvm/include/llvm/Transforms/IPO/Attributor.h
@@ -3142,11 +3142,6 @@ struct AAReturnedValues
     : public IRAttribute<Attribute::Returned, AbstractAttribute> {
   AAReturnedValues(const IRPosition &IRP, Attributor &A) : IRAttribute(IRP) {}
 
-  /// Return an assumed unique return value if a single candidate is found. If
-  /// there cannot be one, return a nullptr. If it is not clear yet, return the
-  /// Optional::NoneType.
-  Optional<Value *> getAssumedUniqueReturnValue(Attributor &A) const;
-
   /// Check \p Pred on all returned values.
   ///
   /// This method will evaluate \p Pred on returned values and return