Index: lib/Transforms/Scalar/GVN.cpp
===================================================================
--- lib/Transforms/Scalar/GVN.cpp
+++ lib/Transforms/Scalar/GVN.cpp
@@ -401,9 +401,8 @@
       return ValNum.first;
     }
     if (!MD) {
-      uint32_t e = assignExpNewValueNum(exp).first;
-      valueNumbering[C] = e;
-      return e;
+      valueNumbering[C] = nextValueNumber;
+      return nextValueNumber++;
     }
 
     MemDepResult local_dep = MD->getDependency(C);