8220712: [TESTBUG] gc/shenandoah/compiler/TestMaybeNullUnsafeAccess should run with Shenandoah enabled

Reviewed-by: rkennke, roland
diff --git a/test/hotspot/jtreg/gc/shenandoah/compiler/TestMaybeNullUnsafeAccess.java b/test/hotspot/jtreg/gc/shenandoah/compiler/TestMaybeNullUnsafeAccess.java
index 566f7e2..514140f 100644
--- a/test/hotspot/jtreg/gc/shenandoah/compiler/TestMaybeNullUnsafeAccess.java
+++ b/test/hotspot/jtreg/gc/shenandoah/compiler/TestMaybeNullUnsafeAccess.java
@@ -28,7 +28,12 @@
  * @requires vm.gc.Shenandoah
  * @modules java.base/jdk.internal.misc:+open
  *
- * @run main/othervm -XX:-UseOnStackReplacement -XX:-BackgroundCompilation -XX:-TieredCompilation TestMaybeNullUnsafeAccess
+ * @run main/othervm -XX:-UseOnStackReplacement -XX:-BackgroundCompilation -XX:-TieredCompilation
+ *                   TestMaybeNullUnsafeAccess
+ *
+ * @run main/othervm -XX:-UseOnStackReplacement -XX:-BackgroundCompilation -XX:-TieredCompilation
+ *                   -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC
+ *                   TestMaybeNullUnsafeAccess
  *
  */