Mercurial > hg > truffle

annotate test/compiler/6910618/Test.java @ 3237:399aa66d375e

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Fixed a bug in which the valueEquals method was misused. The method does only check the equality of the node data and not full GVN equality by taking inputs and successors into account.
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Wed, 27 Jul 2011 14:16:38 -0700
parents c18cbe5936b8
children
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1 /*
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2 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 /**
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26 * @test
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27 * @bug 6910605
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28 * @summary C2: NullPointerException/ClassCaseException is thrown when C2 with DeoptimizeALot is used
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29 *
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30 * @run main/othervm -Xmx64m -XX:+IgnoreUnrecognizedVMOptions -XX:+DeoptimizeALot -XX:+DoEscapeAnalysis -Xbatch -XX:InlineSmallCode=2000 Test
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31 *
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32 */
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33
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34 /*
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35 * Added InlineSmallCode=2000 to guaranty inlining of StringBuilder::append() to allow scalar replace StringBuilder object.
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36 *
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37 * original test: gc/gctests/StringGC
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38 */
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39
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40 public class Test {
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41 private final String toAdd = "0123456789abcdef";
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42 private int maxLength;
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43 private static final int numberOfThreads = 8;
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44
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45 private class StringAdder extends Thread {
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46 private String s;
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47
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48 public void test() {
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49 s = s + toAdd;
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50 }
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51 public void run() {
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52 do {
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53 test();
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54 } while (s.length() < maxLength);
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55 }
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56 }
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57
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58 public void test() throws InterruptedException {
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59 maxLength = toAdd.length() * 15000/ numberOfThreads;
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60 StringAdder[] sa = new StringAdder[numberOfThreads];
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61 for (int i = 0; i < numberOfThreads; i++) {
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62 sa[i] = new StringAdder();
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63 sa[i].start();
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64 }
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65 for (int i = 0; i < numberOfThreads; i++) {
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66 sa[i].join();
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67 }
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68 }
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69
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70 public static void main(String[] args) throws InterruptedException {
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71 Test t = new Test();
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72 t.test();
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73 }
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74 }