annotate test/compiler/5091921/Test6186134.java @ 3345:bad7ecd0b6ed

5091921: Sign flip issues in loop optimizer Summary: Fix integer overflow problem in the code generated by loop optimizer. Reviewed-by: never
author kvn
date Wed, 04 May 2011 13:12:42 -0700
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1 /*
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2 * Copyright (c) 2011, 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 6186134
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28 * @summary Server virtual machine produces/exeutes incorrect code.
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29 *
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30 * @run main Test6186134 100000
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31 */
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32 import java.util.ArrayList;
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33
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34 public class Test6186134 {
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35
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36 int num = 0;
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37
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38 public Test6186134(int n) {
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39 num = n;
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40 }
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41
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42 public boolean more() {
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43 return num-- > 0;
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44 }
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45
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46 public ArrayList test1() {
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47 ArrayList res = new ArrayList();
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48 int maxResults = Integer.MAX_VALUE;
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49 int n = 0;
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50 boolean more = more();
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51 while ((n++ < maxResults) && more) {
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52 res.add(new Object());
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53 more = more();
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54 }
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55 return res;
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56 }
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57
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58 public static void main(String[] pars) {
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59 int n = Integer.parseInt(pars[0]);
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60 for (int i=0; i<n; i++) {
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61 Test6186134 t = new Test6186134(10);
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62 int size = t.test1().size();
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63 if (size != 10) {
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64 System.out.println("wrong size: " + size +", should be 10");
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65 System.exit(97);
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66 }
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67 }
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68 System.out.println("Passed");
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69 }
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70 }
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71