Mercurial > hg > truffle
comparison 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 |
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1153:bea7a22a6f79 | 1154:174ade00803b |
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1 /* | |
2 * Copyright 2009 SAP. All Rights Reserved. | |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 */ | |
23 | |
24 /** | |
25 * @test | |
26 * @bug 6910484 | |
27 * @summary incorrect integer optimization (loosing and op-r in a given example) | |
28 * | |
29 * @run main/othervm -Xbatch Test | |
30 */ | |
31 | |
32 public class Test { | |
33 | |
34 public static void main(String[] args) { | |
35 long iteration = 0; | |
36 for(int i = 0; i <11000; i++) { | |
37 iteration++; | |
38 int result = test(255); | |
39 if (result != 112) { | |
40 System.out.println("expected 112, but got " + result + " after iteration " + iteration); | |
41 System.exit(97); | |
42 } | |
43 } | |
44 } | |
45 | |
46 private static int test(int x) { | |
47 return (x & -32) / 2; | |
48 } | |
49 | |
50 } |