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1 /*
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2 * Copyright 2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any 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 6769124
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28 * @summary int value might not be correctly decoded on deopt with c1 on 64 bit
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29 *
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30 * @run main/othervm -Xcomp -XX:CompileOnly=TestDeoptInt6769124.m TestDeoptInt6769124
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31 */
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32
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33 public class TestDeoptInt6769124 {
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34
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35 static class A {
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36 volatile int vl;
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37 A(int v) {
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38 vl = v;
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39 }
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40 }
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41
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42 static void m(int b) {
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43 A a = new A(10);
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44 int c;
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45 c = b + a.vl; //accessing volatile field of class not loaded at compile time forces a deopt
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46 if(c != 20) {
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47 System.out.println("a (= " + a.vl + ") + b (= " + b + ") = c (= " + c + ") != 20");
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48 throw new InternalError();
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49 }
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50 }
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51
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52 public static void main(String[] args) {
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53 m(10);
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54 }
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55
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56 }
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