69 lines
2.3 KiB
Java
69 lines
2.3 KiB
Java
/*
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* Copyright (c) 2015, Oracle and/or its affiliates. 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 8080699
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* @summary eliminated arraycopy node still reachable through exception edges
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*
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* @run main/othervm -XX:-UseOnStackReplacement -XX:-BackgroundCompilation
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* compiler.arraycopy.TestDeadArrayCopyOnMemChain
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*/
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package compiler.arraycopy;
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public class TestDeadArrayCopyOnMemChain {
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static class A {
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int f;
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}
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static void test_helper(Object o) {
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}
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static void test(int src_off, boolean flag) {
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// dst is eliminated first. Eliminating dst causes src to be
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// eliminated. When working on the safepoint at the uncommon
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// trap in the exception handler, the eliminated ArrayCopyNode
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// is reached through the exception edges.
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Object[] dst = new Object[10];
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Object[] src = new Object[10];
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// src_off causes the exception handler to be run sometimes
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try {
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System.arraycopy(src, src_off, dst, 0, 10);
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} catch (IndexOutOfBoundsException ioobe) {
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// flag always false so test becomes uncommon trap. Make
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// sure src is live at the unc.
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if (flag) {
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test_helper(src);
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}
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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 < 20000; i++) {
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test((i%2) == 0 ? 0 : -1, false);
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}
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}
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}
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