diff --git a/llvm/include/llvm/Transforms/IPO/Attributor.h b/llvm/include/llvm/Transforms/IPO/Attributor.h
--- a/llvm/include/llvm/Transforms/IPO/Attributor.h
+++ b/llvm/include/llvm/Transforms/IPO/Attributor.h
@@ -2047,6 +2047,9 @@
 
   /// This function should return the name of the AbstractAttribute
   virtual const std::string getName() const = 0;
+
+  /// This function should return the address of the ID of the AbstractAttribute
+  virtual const char *getIdAddr() const = 0;
   ///}
 
   /// Allow the Attributor access to the protected methods.
@@ -2164,6 +2167,15 @@
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AAReturnedValues"; }
 
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is
+  /// AAReturnedValues
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
   /// Unique ID (due to the unique address)
   static const char ID;
 };
@@ -2185,6 +2197,14 @@
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AANoUnwind"; }
 
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is AANoUnwind
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
   /// Unique ID (due to the unique address)
   static const char ID;
 };
@@ -2206,6 +2226,14 @@
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AANoSync"; }
 
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is AANoSync
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
   /// Unique ID (due to the unique address)
   static const char ID;
 };
@@ -2228,6 +2256,14 @@
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AANonNull"; }
 
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is AANonNull
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
   /// Unique ID (due to the unique address)
   static const char ID;
 };
@@ -2250,6 +2286,14 @@
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AANoRecurse"; }
 
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is AANoRecurse
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
   /// Unique ID (due to the unique address)
   static const char ID;
 };
@@ -2272,6 +2316,14 @@
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AAWillReturn"; }
 
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is AAWillReturn
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
   /// Unique ID (due to the unique address)
   static const char ID;
 };
@@ -2301,6 +2353,15 @@
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AAUndefinedBehavior"; }
 
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is
+  /// AAUndefineBehavior
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
   /// Unique ID (due to the unique address)
   static const char ID;
 };
@@ -2332,6 +2393,15 @@
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AAReachability"; }
 
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is
+  /// AAReachability
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
   /// Unique ID (due to the unique address)
   static const char ID;
 };
@@ -2354,6 +2424,14 @@
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AANoAlias"; }
 
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is AANoAlias
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
   /// Unique ID (due to the unique address)
   static const char ID;
 };
@@ -2376,6 +2454,14 @@
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AANoFree"; }
 
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is AANoFree
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
   /// Unique ID (due to the unique address)
   static const char ID;
 };
@@ -2398,6 +2484,14 @@
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AANoReturn"; }
 
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is AANoReturn
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
   /// Unique ID (due to the unique address)
   static const char ID;
 };
@@ -2455,6 +2549,14 @@
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AAIsDead"; }
 
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is AAIsDead
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
   /// Unique ID (due to the unique address)
   static const char ID;
 
@@ -2648,6 +2750,15 @@
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AADereferenceable"; }
 
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is
+  /// AADereferenceable
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
   /// Unique ID (due to the unique address)
   static const char ID;
 };
@@ -2669,6 +2780,14 @@
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AAAlign"; }
 
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is AAAlign
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
   /// Create an abstract attribute view for the position \p IRP.
   static AAAlign &createForPosition(const IRPosition &IRP, Attributor &A);
 
@@ -2726,6 +2845,14 @@
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AANoCapture"; }
 
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is AANoCapture
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
   /// Unique ID (due to the unique address)
   static const char ID;
 };
@@ -2747,6 +2874,15 @@
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AAValueSimplify"; }
 
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is
+  /// AAValueSimplify
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
   /// Unique ID (due to the unique address)
   static const char ID;
 };
@@ -2767,6 +2903,14 @@
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AAHeapToStack"; }
 
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is AAHeapToStack
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
   /// Unique ID (due to the unique address)
   static const char ID;
 };
@@ -2803,6 +2947,15 @@
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AAPrivatizablePtr"; }
 
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is
+  /// AAPricatizablePtr
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
   /// Unique ID (due to the unique address)
   static const char ID;
 };
@@ -2857,6 +3010,15 @@
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AAMemoryBehavior"; }
 
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is
+  /// AAMemoryBehavior
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
   /// Unique ID (due to the unique address)
   static const char ID;
 };
@@ -3018,6 +3180,15 @@
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AAMemoryLocation"; }
 
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is
+  /// AAMemoryLocation
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
   /// Unique ID (due to the unique address)
   static const char ID;
 };
@@ -3066,6 +3237,15 @@
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AAValueConstantRange"; }
 
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is
+  /// AAValueConstantRange
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
   /// Unique ID (due to the unique address)
   static const char ID;
 };
diff --git a/llvm/lib/Transforms/IPO/Attributor.cpp b/llvm/lib/Transforms/IPO/Attributor.cpp
--- a/llvm/lib/Transforms/IPO/Attributor.cpp
+++ b/llvm/lib/Transforms/IPO/Attributor.cpp
@@ -23,6 +23,7 @@
 #include "llvm/IR/NoFolder.h"
 #include "llvm/IR/Verifier.h"
 #include "llvm/InitializePasses.h"
+#include "llvm/Support/Casting.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Transforms/Utils/BasicBlockUtils.h"
 #include "llvm/Transforms/Utils/Local.h"
diff --git a/llvm/lib/Transforms/IPO/OpenMPOpt.cpp b/llvm/lib/Transforms/IPO/OpenMPOpt.cpp
--- a/llvm/lib/Transforms/IPO/OpenMPOpt.cpp
+++ b/llvm/lib/Transforms/IPO/OpenMPOpt.cpp
@@ -1113,6 +1113,14 @@
   /// See AbstractAttribute::getName()
   const std::string getName() const override { return "AAICVTracker"; }
 
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// This function should return true if the type of the \p AA is AAICVTracker
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
   static const char ID;
 };