Mercurial > hg > truffle
annotate test/compiler/6910484/Test.java @ 1154:174ade00803b
6910484: incorrect integer optimization (loosing and op-r in a given example)
Summary: Remove AND operation only if mask is equal to shift.
Reviewed-by: never
author | kvn |
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date | Fri, 08 Jan 2010 09:51:24 -0800 |
parents | |
children | c18cbe5936b8 |
rev | line source |
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1 /* |
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2 * Copyright 2009 SAP. 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 * @test |
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26 * @bug 6910484 |
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27 * @summary incorrect integer optimization (loosing and op-r in a given example) |
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28 * |
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29 * @run main/othervm -Xbatch Test |
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30 */ |
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31 |
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32 public class Test { |
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33 |
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34 public static void main(String[] args) { |
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35 long iteration = 0; |
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36 for(int i = 0; i <11000; i++) { |
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37 iteration++; |
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38 int result = test(255); |
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39 if (result != 112) { |
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40 System.out.println("expected 112, but got " + result + " after iteration " + iteration); |
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41 System.exit(97); |
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42 } |
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43 } |
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44 } |
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45 |
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46 private static int test(int x) { |
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47 return (x & -32) / 2; |
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48 } |
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49 |
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50 } |