--- /dev/null	2018-06-17 23:18:20.806999507 +0800
+++ new/test/jdk/jfr/event/gc/detailed/TestG1IHOPEvent.java	2019-01-29 11:03:10.514405017 +0800
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2015, 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.event.gc.detailed;
+
+import java.util.List;
+
+import jdk.jfr.Recording;
+import jdk.jfr.consumer.RecordedEvent;
+import jdk.testlibrary.jfr.EventNames;
+import jdk.testlibrary.jfr.Events;
+
+/*
+ * @test
+ * @key jfr
+ * @requires vm.gc == "G1" | vm.gc == null
+ * @library /lib/testlibrary
+ * @run main/othervm -XX:NewSize=2m -XX:MaxNewSize=2m -Xmx32m -XX:+UseG1GC -XX:+UnlockExperimentalVMOptions -XX:-UseFastUnorderedTimeStamps jdk.jfr.event.gc.detailed.TestG1IHOPEvent
+ */
+public class TestG1IHOPEvent {
+
+    private final static String EVENT_NAME = EventNames.G1BasicIHOP;
+    public static byte[] bytes;
+
+    public static void main(String[] args) throws Exception {
+
+        Recording recording = new Recording();
+
+        // activate the event we are interested in and start recording
+        recording.enable(EVENT_NAME);
+        recording.start();
+
+        // Setting NewSize and MaxNewSize will limit eden, so
+        // allocating 1024 5k byte arrays should trigger at
+        // least one Young GC.
+        for (int i = 0; i < 1024; i++) {
+            bytes= new byte[5 * 1024];
+        }
+        recording.stop();
+
+        // Verify recording
+        List<RecordedEvent> all = Events.fromRecording(recording);
+        Events.hasEvents(all);
+
+        for (RecordedEvent e : all) {
+            Events.assertField(e, "gcId").above(0);
+        }
+
+        recording.close();
+
+    }
+}