src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotMemoryAccessProvider.java

*** 29,38 ****
--- 29,42 ----
  /**
   * HotSpot specific extension of {@link MemoryAccessProvider}.
   */
  public interface HotSpotMemoryAccessProvider extends MemoryAccessProvider {
  
+     /**
+      * @throws IllegalArgumentException if the address computed from {@code base} and
+      *             {@code displacement} does not denote a location holding a narrow oop
+      */
      JavaConstant readNarrowOopConstant(Constant base, long displacement);
  
      Constant readKlassPointerConstant(Constant base, long displacement);
  
      Constant readNarrowKlassPointerConstant(Constant base, long displacement);