--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/c2/TestReplacedNodesOSR.java Thu Feb 16 15:14:44 2017 -0800
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2017, Red Hat, Inc. 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.
+ *
+ * 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.
+ */
+
+/**
+ * @test
+ * @bug 8174164
+ * @summary SafePointNode::_replaced_nodes breaks with irreducible loops
+ * @run main/othervm -XX:-BackgroundCompilation TestReplacedNodesOSR
+ *
+ */
+
+public class TestReplacedNodesOSR {
+
+ static Object dummy;
+
+ static interface I {
+ }
+
+ static class A implements I {
+ }
+
+ static final class MyException extends Exception {
+ }
+
+ static final A obj = new A();
+ static I static_field() { return obj; }
+
+ // When OSR compiled, this method has an irreducible loop
+ static void test(int v, MyException e) {
+ int i = 0;
+ for (;;) {
+ if (i == 1000) {
+ break;
+ }
+ try {
+ if ((i%2) == 0) {
+ int j = 0;
+ for (;;) {
+ j++;
+ if (i+j != v) {
+ if (j == 1000) {
+ break;
+ }
+ } else {
+ A a = (A)static_field();
+ // replaced node recorded here
+ throw e;
+ }
+ }
+ }
+ } catch(MyException ex) {
+ }
+ i++;
+ // replaced node applied on return of the method
+ // replaced node used here
+ dummy = static_field();
+ }
+ }
+
+
+ static public void main(String[] args) {
+ for (int i = 0; i < 1000; i++) {
+ test(1100, new MyException());
+ }
+ }
+}