3789983e89
Reviewed-by: darcy, ihse
87 lines
2.6 KiB
Java
87 lines
2.6 KiB
Java
/*
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* Copyright (c) 2017, Red Hat, Inc. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 8174164
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* @summary SafePointNode::_replaced_nodes breaks with irreducible loops
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* @run main/othervm -XX:-BackgroundCompilation TestReplacedNodesOSR
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*
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*/
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public class TestReplacedNodesOSR {
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static Object dummy;
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static interface I {
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}
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static class A implements I {
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}
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static final class MyException extends Exception {
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}
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static final A obj = new A();
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static I static_field() { return obj; }
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// When OSR compiled, this method has an irreducible loop
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static void test(int v, MyException e) {
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int i = 0;
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for (;;) {
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if (i == 1000) {
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break;
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}
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try {
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if ((i%2) == 0) {
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int j = 0;
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for (;;) {
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j++;
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if (i+j != v) {
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if (j == 1000) {
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break;
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}
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} else {
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A a = (A)static_field();
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// replaced node recorded here
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throw e;
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}
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}
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}
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} catch(MyException ex) {
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}
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i++;
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// replaced node applied on return of the method
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// replaced node used here
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dummy = static_field();
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}
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}
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static public void main(String[] args) {
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for (int i = 0; i < 1000; i++) {
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test(1100, new MyException());
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}
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}
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}
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