1 /* 2 * Copyright (c) 2017, 2018, Red Hat, Inc. 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 * @test 26 * @bug 8182997 8214898 27 * @library /test/lib 28 * @summary Test the handling of Arrays of unloaded value classes. 29 * @compile -XDemitQtypes -XDenableValueTypes -XDallowFlattenabilityModifiers -XDallowWithFieldOperator TestUnloadedValueTypeArray.java 30 * @run main/othervm -XX:+EnableValhalla -Xcomp 31 * -XX:CompileCommand=compileonly,TestUnloadedValueTypeArray::test1 32 * -XX:CompileCommand=compileonly,TestUnloadedValueTypeArray::test2 33 * -XX:CompileCommand=compileonly,TestUnloadedValueTypeArray::test3 34 * -XX:CompileCommand=compileonly,TestUnloadedValueTypeArray::test4 35 * TestUnloadedValueTypeArray 36 */ 37 38 import jdk.test.lib.Asserts; 39 40 value final class MyValue { 41 final int foo; 42 43 private MyValue() { 44 foo = 0x42; 45 } 46 } 47 48 value final class MyValue2 { 49 final int foo; 50 51 private MyValue2() { 52 foo = 0x42; 53 } 54 static MyValue2 make(int n) { 55 return __WithField(MyValue2.default.foo, n); 56 } 57 } 58 59 value final class MyValue3 { 60 final int foo; 61 62 private MyValue3() { 63 foo = 0x42; 64 } 65 static MyValue3 make(int n) { 66 return __WithField(MyValue3.default.foo, n); 67 } 68 } 69 70 value final class MyValue4 { 71 final int foo; 72 73 private MyValue4() { 74 foo = 0x53; 75 } 76 static MyValue4 make(int n) { 77 return __WithField(MyValue4.default.foo, n); 78 } 79 } 80 81 public class TestUnloadedValueTypeArray { 82 83 static MyValue[] target() { 84 return new MyValue[10]; 85 } 86 87 static void test1() { 88 target(); 89 } 90 91 static int test2(MyValue2[] arr) { 92 if (arr != null) { 93 return arr[1].foo; 94 } else { 95 return 1234; 96 } 97 } 98 99 static void test2_verifier() { 100 int n = 50000; 101 102 int m = 9999; 103 for (int i=0; i<n; i++) { 104 m = test2(null); 105 } 106 Asserts.assertEQ(m, 1234); 107 108 MyValue2[] arr = new MyValue2[2]; 109 arr[1] = MyValue2.make(5678); 110 m = 9999; 111 for (int i=0; i<n; i++) { 112 m = test2(arr); 113 } 114 Asserts.assertEQ(m, 5678); 115 } 116 117 static void test3(MyValue3[] arr) { 118 if (arr != null) { 119 arr[1] = MyValue3.make(2345); 120 } 121 } 122 123 static void test3_verifier() { 124 int n = 50000; 125 126 for (int i=0; i<n; i++) { 127 test3(null); 128 } 129 130 MyValue3[] arr = new MyValue3[2]; 131 for (int i=0; i<n; i++) { 132 test3(arr); 133 } 134 Asserts.assertEQ(arr[1].foo, 2345); 135 } 136 137 static MyValue4[] test4(boolean b) { 138 // range check elimination 139 if (b) { 140 MyValue4[] arr = new MyValue4[10]; 141 arr[1] = MyValue4.make(2345); 142 return arr; 143 } else { 144 return null; 145 } 146 } 147 148 static void test4_verifier() { 149 int n = 50000; 150 151 for (int i=0; i<n; i++) { 152 test4(false); 153 } 154 155 MyValue4[] arr = null; 156 for (int i=0; i<n; i++) { 157 arr = test4(true); 158 } 159 Asserts.assertEQ(arr[1].foo, 2345); 160 } 161 162 static public void main(String[] args) { 163 test1(); 164 test2_verifier(); 165 test3_verifier(); 166 test4_verifier(); 167 } 168 }