Index: include/llvm/CodeGen/MachineConstantPool.h
===================================================================
--- include/llvm/CodeGen/MachineConstantPool.h
+++ include/llvm/CodeGen/MachineConstantPool.h
@@ -91,7 +91,7 @@
   /// is indeed a target specific constantpool entry, not a wrapper over a
   /// Constant.
   bool isMachineConstantPoolEntry() const {
-    return (int)Alignment < 0;
+    return Alignment & ((unsigned) INT_MAX + 1);
   }
 
   int getAlignment() const {