Wed, 27 Apr 2016 01:25:04 +0800
Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
aoqi@0 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | * |
aoqi@0 | 23 | */ |
aoqi@0 | 24 | |
aoqi@0 | 25 | /** |
aoqi@0 | 26 | * @test |
aoqi@0 | 27 | * @bug 6559156 |
aoqi@0 | 28 | * @summary Server compiler generates bad code for "<= Integer.MAX_VALUE" expression |
aoqi@0 | 29 | * |
aoqi@0 | 30 | * @run main Test6559156 |
aoqi@0 | 31 | */ |
aoqi@0 | 32 | |
aoqi@0 | 33 | public class Test6559156 { |
aoqi@0 | 34 | |
aoqi@0 | 35 | static final int N_TESTS = 1000000; |
aoqi@0 | 36 | |
aoqi@0 | 37 | public static void main(String[] args) throws Exception { |
aoqi@0 | 38 | |
aoqi@0 | 39 | /* |
aoqi@0 | 40 | * If MAX_VALUE is changed to MAX_VALUE - 1 below, the test passes |
aoqi@0 | 41 | * because (apparently) bad code is only generated when comparing |
aoqi@0 | 42 | * <= MAX_VALUE in the doTest method. |
aoqi@0 | 43 | */ |
aoqi@0 | 44 | Test6559156 test = new Test6559156(); |
aoqi@0 | 45 | for (int i = 0; i < N_TESTS; i += 1) { |
aoqi@0 | 46 | test.doTest1(10, Integer.MAX_VALUE, i); |
aoqi@0 | 47 | test.doTest2(10, Integer.MAX_VALUE, i); |
aoqi@0 | 48 | } |
aoqi@0 | 49 | System.out.println("No failure"); |
aoqi@0 | 50 | } |
aoqi@0 | 51 | |
aoqi@0 | 52 | void doTest1(int expected, int max, int i) { |
aoqi@0 | 53 | int counted; |
aoqi@0 | 54 | for (counted = 0; |
aoqi@0 | 55 | (counted <= max) && (counted < expected); |
aoqi@0 | 56 | counted += 1) { |
aoqi@0 | 57 | } |
aoqi@0 | 58 | if (counted != expected) { |
aoqi@0 | 59 | throw new RuntimeException("Failed test1 iteration=" + i + |
aoqi@0 | 60 | " max=" + max + |
aoqi@0 | 61 | " counted=" + counted + |
aoqi@0 | 62 | " expected=" + expected); |
aoqi@0 | 63 | } |
aoqi@0 | 64 | } |
aoqi@0 | 65 | |
aoqi@0 | 66 | void doTest2(int expected, int max, int i) { |
aoqi@0 | 67 | int counted; |
aoqi@0 | 68 | for (counted = 0; |
aoqi@0 | 69 | // change test sequence. |
aoqi@0 | 70 | (counted < expected) && (counted <= max); |
aoqi@0 | 71 | counted += 1) { |
aoqi@0 | 72 | } |
aoqi@0 | 73 | if (counted != expected) { |
aoqi@0 | 74 | throw new RuntimeException("Failed test1 iteration=" + i + |
aoqi@0 | 75 | " max=" + max + |
aoqi@0 | 76 | " counted=" + counted + |
aoqi@0 | 77 | " expected=" + expected); |
aoqi@0 | 78 | } |
aoqi@0 | 79 | } |
aoqi@0 | 80 | } |
aoqi@0 | 81 |