Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: test/compiler/5091921/Test6559156.java
test/compiler/5091921/Test6559156.java
- changeset 2877
- bad7ecd0b6ed
- parent 0
- f90c822e73f8
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| 2876:0139aac70fb5 | 2877:bad7ecd0b6ed |
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| 1 /* | |
| 2 * Copyright (c) 2011, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 /** | |
| 26 * @test | |
| 27 * @bug 6559156 | |
| 28 * @summary Server compiler generates bad code for "<= Integer.MAX_VALUE" expression | |
| 29 * | |
| 30 * @run main Test6559156 | |
| 31 */ | |
| 32 | |
| 33 public class Test6559156 { | |
| 34 | |
| 35 static final int N_TESTS = 1000000; | |
| 36 | |
| 37 public static void main(String[] args) throws Exception { | |
| 38 | |
| 39 /* | |
| 40 * If MAX_VALUE is changed to MAX_VALUE - 1 below, the test passes | |
| 41 * because (apparently) bad code is only generated when comparing | |
| 42 * <= MAX_VALUE in the doTest method. | |
| 43 */ | |
| 44 Test6559156 test = new Test6559156(); | |
| 45 for (int i = 0; i < N_TESTS; i += 1) { | |
| 46 test.doTest1(10, Integer.MAX_VALUE, i); | |
| 47 test.doTest2(10, Integer.MAX_VALUE, i); | |
| 48 } | |
| 49 System.out.println("No failure"); | |
| 50 } | |
| 51 | |
| 52 void doTest1(int expected, int max, int i) { | |
| 53 int counted; | |
| 54 for (counted = 0; | |
| 55 (counted <= max) && (counted < expected); | |
| 56 counted += 1) { | |
| 57 } | |
| 58 if (counted != expected) { | |
| 59 throw new RuntimeException("Failed test1 iteration=" + i + | |
| 60 " max=" + max + | |
| 61 " counted=" + counted + | |
| 62 " expected=" + expected); | |
| 63 } | |
| 64 } | |
| 65 | |
| 66 void doTest2(int expected, int max, int i) { | |
| 67 int counted; | |
| 68 for (counted = 0; | |
| 69 // change test sequence. | |
| 70 (counted < expected) && (counted <= max); | |
| 71 counted += 1) { | |
| 72 } | |
| 73 if (counted != expected) { | |
| 74 throw new RuntimeException("Failed test1 iteration=" + i + | |
| 75 " max=" + max + | |
| 76 " counted=" + counted + | |
| 77 " expected=" + expected); | |
| 78 } | |
| 79 } | |
| 80 } | |
| 81 |
