diff --git a/include/llvm/Analysis/DSSupport.h b/include/llvm/Analysis/DSSupport.h
index dfd4bd79764..e2633ee9ece 100644
--- a/include/llvm/Analysis/DSSupport.h
+++ b/include/llvm/Analysis/DSSupport.h
@@ -26,6 +26,11 @@ namespace DS { // FIXME: After the paper, this should get cleaned up
   enum { PointerShift = 3,     // 64bit ptrs = 3, 32 bit ptrs = 2
          PointerSize = 1 << PointerShift
   };
+
+  // isPointerType - Return true if this first class type is big enough to hold
+  // a pointer.
+  //
+  bool isPointerType(const Type *Ty);
 };
 
 //===----------------------------------------------------------------------===//
diff --git a/include/llvm/Analysis/DataStructure/DSSupport.h b/include/llvm/Analysis/DataStructure/DSSupport.h
index dfd4bd79764..e2633ee9ece 100644
--- a/include/llvm/Analysis/DataStructure/DSSupport.h
+++ b/include/llvm/Analysis/DataStructure/DSSupport.h
@@ -26,6 +26,11 @@ namespace DS { // FIXME: After the paper, this should get cleaned up
   enum { PointerShift = 3,     // 64bit ptrs = 3, 32 bit ptrs = 2
          PointerSize = 1 << PointerShift
   };
+
+  // isPointerType - Return true if this first class type is big enough to hold
+  // a pointer.
+  //
+  bool isPointerType(const Type *Ty);
 };
 
 //===----------------------------------------------------------------------===//