src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/type/AbstractPointerStamp.java

rev 52509 : [mq]: graal2

*** 140,153 ****
      }
  
      @Override
      public Constant asConstant() {
          if (alwaysNull) {
!             return JavaConstant.NULL_POINTER;
!         } else {
!             return null;
          }
      }
  
      @Override
      public JavaKind getStackKind() {
          return JavaKind.Illegal;
--- 140,156 ----
      }
  
      @Override
      public Constant asConstant() {
          if (alwaysNull) {
!             return nullConstant();
!         }
!         return super.asConstant();
      }
+ 
+     public JavaConstant nullConstant() {
+         return JavaConstant.NULL_POINTER;
      }
  
      @Override
      public JavaKind getStackKind() {
          return JavaKind.Illegal;