Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: test/compiler/6851282/Test.java
test/compiler/6851282/Test.java
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| 1 /* | |
| 2 * Copyright (c) 2009, 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 6851282 | |
| 28 * @summary JIT miscompilation results in null entry in array when using CompressedOops | |
| 29 * | |
| 30 * @run main/othervm/timeout=600 -Xmx256m -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops Test | |
| 31 */ | |
| 32 | |
| 33 import java.util.ArrayList; | |
| 34 import java.util.List; | |
| 35 | |
| 36 public class Test { | |
| 37 void foo(A a, A[] as) { | |
| 38 for (A a1 : as) { | |
| 39 B[] filtered = a.c(a1); | |
| 40 for (B b : filtered) { | |
| 41 if (b == null) { | |
| 42 System.out.println("bug: b == null"); | |
| 43 System.exit(97); | |
| 44 } | |
| 45 } | |
| 46 } | |
| 47 } | |
| 48 | |
| 49 public static void main(String[] args) { | |
| 50 List<A> as = new ArrayList<A>(); | |
| 51 for (int i = 0; i < 5000; i++) { | |
| 52 List<B> bs = new ArrayList<B>(); | |
| 53 for (int j = i; j < i + 1000; j++) | |
| 54 bs.add(new B(j)); | |
| 55 as.add(new A(bs.toArray(new B[0]))); | |
| 56 } | |
| 57 new Test().foo(as.get(0), as.subList(1, as.size()).toArray(new A[0])); | |
| 58 } | |
| 59 } | |
| 60 | |
| 61 class A { | |
| 62 final B[] bs; | |
| 63 | |
| 64 public A(B[] bs) { | |
| 65 this.bs = bs; | |
| 66 } | |
| 67 | |
| 68 final B[] c(final A a) { | |
| 69 return new BoxedArray<B>(bs).filter(new Function<B, Boolean>() { | |
| 70 public Boolean apply(B arg) { | |
| 71 for (B b : a.bs) { | |
| 72 if (b.d == arg.d) | |
| 73 return true; | |
| 74 } | |
| 75 return false; | |
| 76 } | |
| 77 }); | |
| 78 } | |
| 79 } | |
| 80 | |
| 81 class BoxedArray<T> { | |
| 82 | |
| 83 private final T[] array; | |
| 84 | |
| 85 BoxedArray(T[] array) { | |
| 86 this.array = array; | |
| 87 } | |
| 88 | |
| 89 public T[] filter(Function<T, Boolean> function) { | |
| 90 boolean[] include = new boolean[array.length]; | |
| 91 int len = 0; | |
| 92 int i = 0; | |
| 93 while (i < array.length) { | |
| 94 if (function.apply(array[i])) { | |
| 95 include[i] = true; | |
| 96 len += 1; | |
| 97 } | |
| 98 i += 1; | |
| 99 } | |
| 100 T[] result = (T[]) java.lang.reflect.Array.newInstance(array.getClass().getComponentType(), len); | |
| 101 len = 0; | |
| 102 i = 0; | |
| 103 while (len < result.length) { | |
| 104 if (include[i]) { | |
| 105 result[len] = array[i]; | |
| 106 len += 1; | |
| 107 } | |
| 108 i += 1; | |
| 109 } | |
| 110 return result; | |
| 111 } | |
| 112 } | |
| 113 | |
| 114 interface Function<T, R> { | |
| 115 R apply(T arg); | |
| 116 } | |
| 117 | |
| 118 class B { | |
| 119 final int d; | |
| 120 public B(int d) { | |
| 121 this.d = d; | |
| 122 } | |
| 123 } | |
| 124 |
