src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir/src/org/graalvm/compiler/lir/LIRValueUtil.java

*** 69,78 ****
--- 69,83 ----
  
      public static JavaConstant asJavaConstant(Value value) {
          return asConstantValue(value).getJavaConstant();
      }
  
+     public static boolean isNullConstant(Value value) {
+         assert value != null;
+         return isJavaConstant(value) && asJavaConstant(value).isNull();
+     }
+ 
      public static boolean isIntConstant(Value value, long expected) {
          if (isJavaConstant(value)) {
              JavaConstant javaConstant = asJavaConstant(value);
              if (javaConstant != null && javaConstant.getJavaKind().isNumericInteger()) {
                  return javaConstant.asLong() == expected;