--- /dev/null	2018-06-17 23:18:20.806999507 +0800
+++ new/test/jdk/jfr/startupargs/TestRetransform.java	2019-01-29 11:05:41.235002566 +0800
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.jfr.startupargs;
+
+import jdk.jfr.Event;
+import jdk.jfr.EventType;
+import jdk.jfr.Recording;
+import jdk.testlibrary.Asserts;
+import jdk.testlibrary.jfr.Events;
+import jdk.testlibrary.jfr.SimpleEvent;
+import jdk.testlibrary.jfr.StartupHelper;
+
+/*
+ * @test
+ * @key jfr
+ * @library /lib/testlibrary
+ * @run main/othervm -XX:FlightRecorderOptions=retransform=false jdk.jfr.startupargs.TestRetransform
+ * @run main/othervm -XX:FlightRecorderOptions=retransform=true jdk.jfr.startupargs.TestRetransform
+ */
+public class TestRetransform {
+    private static class TestEvent extends Event {
+    }
+    public static void main(String[] args) throws Exception {
+        EventType type = EventType.getEventType(TestEvent.class);
+        if (type.isEnabled()) {
+            Asserts.fail("Expected event to be disabled before recording start");
+        }
+        Recording r = new Recording();
+        r.start();
+        if (!type.isEnabled()) {
+            Asserts.fail("Expected event to be enabled during recording");
+        }
+        TestEvent testEvent = new TestEvent();
+        testEvent.commit();
+        loadEventClassDuringRecording();
+        r.stop();
+        if (type.isEnabled()) {
+            Asserts.fail("Expected event to be disabled after recording stopped");
+        }
+        Events.hasEvent(r, SimpleEvent.class.getName());
+        Events.hasEvent(r, TestEvent.class.getName());
+    }
+
+    // Classes that are loaded during a recording
+    // should get instrumentation on class load
+    private static void loadEventClassDuringRecording() {
+        SimpleEvent event = new SimpleEvent();
+        event.commit();
+    }
+
+}