Mercurial > jdk8-mips64-public > hotspot / annotate
test/compiler/types/TestSpeculationFailedHigherEqual.java@f90c822e73f8 (annotated)
test/compiler/types/TestSpeculationFailedHigherEqual.java
Wed, 27 Apr 2016 01:25:04 +0800
- author
- aoqi
- date
- Wed, 27 Apr 2016 01:25:04 +0800
- changeset 0
- f90c822e73f8
- child 6876
- 710a3c8b516e
- permissions
- -rw-r--r--
Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 2014, 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 | * @test |
| aoqi@0 | 26 | * @bug 8027422 |
| aoqi@0 | 27 | * @summary type methods shouldn't always operate on speculative part |
| aoqi@0 | 28 | * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:TypeProfileLevel=222 -XX:+UseTypeSpeculation -XX:-BackgroundCompilation TestSpeculationFailedHigherEqual |
| aoqi@0 | 29 | * |
| aoqi@0 | 30 | */ |
| aoqi@0 | 31 | |
| aoqi@0 | 32 | public class TestSpeculationFailedHigherEqual { |
| aoqi@0 | 33 | |
| aoqi@0 | 34 | static class A { |
| aoqi@0 | 35 | void m() {} |
| aoqi@0 | 36 | int i; |
| aoqi@0 | 37 | } |
| aoqi@0 | 38 | |
| aoqi@0 | 39 | static class C extends A { |
| aoqi@0 | 40 | } |
| aoqi@0 | 41 | |
| aoqi@0 | 42 | static C c; |
| aoqi@0 | 43 | |
| aoqi@0 | 44 | static A m1(A a, boolean cond) { |
| aoqi@0 | 45 | // speculative type for a is C not null |
| aoqi@0 | 46 | if (cond ) { |
| aoqi@0 | 47 | a = c; |
| aoqi@0 | 48 | } |
| aoqi@0 | 49 | // speculative type for a is C (may be null) |
| aoqi@0 | 50 | int i = a.i; |
| aoqi@0 | 51 | return a; |
| aoqi@0 | 52 | } |
| aoqi@0 | 53 | |
| aoqi@0 | 54 | static public void main(String[] args) { |
| aoqi@0 | 55 | C c = new C(); |
| aoqi@0 | 56 | TestSpeculationFailedHigherEqual.c = c; |
| aoqi@0 | 57 | for (int i = 0; i < 20000; i++) { |
| aoqi@0 | 58 | m1(c, i%2 == 0); |
| aoqi@0 | 59 | } |
| aoqi@0 | 60 | |
| aoqi@0 | 61 | System.out.println("TEST PASSED"); |
| aoqi@0 | 62 | } |
| aoqi@0 | 63 | } |
