Index: llvm/include/llvm/ADT/BitVector.h
===================================================================
--- llvm/include/llvm/ADT/BitVector.h
+++ llvm/include/llvm/ADT/BitVector.h
@@ -71,7 +71,7 @@
 };
 
 class BitVector {
-  typedef unsigned long BitWord;
+  typedef uintptr_t BitWord;
 
   enum { BITWORD_SIZE = (unsigned)sizeof(BitWord) * CHAR_BIT };