src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.jtt/src/org/graalvm/compiler/jtt/bytecode/BC_instanceof.java

*** 74,79 ****
--- 74,95 ----
      @Test
      public void run4() throws Throwable {
          runTest("test", 4);
      }
  
+     // Checkstyle: stop
+     // Need to stop checkstyle due to empty if constructs.
+     public static boolean testEmpty(Object obj) {
+         if (obj instanceof TestClass) {
+         }
+ 
+         if (!(obj instanceof TestClass)) {
+         }
+         return true;
+     }
+     // Checkstyle: resume
+ 
+     @Test
+     public void run5() throws Throwable {
+         runTest("testEmpty", object2);
+     }
  }