1 /* 2 * Copyright (c) 2019, 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 * @test 26 * @summary Verify that certain array accesses do not trigger deoptimization. 27 * @library /test/lib 28 * @run main/othervm -XX:+EnableValhalla TestArrayAccessDeopt 29 */ 30 31 import java.io.File; 32 import jdk.test.lib.Asserts; 33 import jdk.test.lib.process.OutputAnalyzer; 34 import jdk.test.lib.process.ProcessTools; 35 36 final inline class MyValue1 { 37 public final int x = 0; 38 } 39 40 public class TestArrayAccessDeopt { 41 42 public static void test1(Object[] va, Object vt) { 43 va[0] = vt; 44 } 45 46 public static void test2(Object[] va, MyValue1? vt) { 47 va[0] = vt; 48 } 49 50 public static void test3(MyValue1?[] va, Object vt) { 51 va[0] = (MyValue1?)vt; 52 } 53 54 public static void test4(MyValue1?[] va, MyValue1? vt) { 55 va[0] = vt; 56 } 57 58 public static void test5(Object[] va, MyValue1 vt) { 59 va[0] = vt; 60 } 61 62 public static void test6(MyValue1[] va, Object vt) { 63 va[0] = (MyValue1)vt; 64 } 65 66 public static void test7(MyValue1[] va, MyValue1 vt) { 67 va[0] = vt; 68 } 69 70 public static void test8(MyValue1?[] va, MyValue1 vt) { 71 va[0] = vt; 72 } 73 74 public static void test9(MyValue1[] va, MyValue1? vt) { 75 va[0] = (MyValue1)vt; 76 } 77 78 public static void test10(Object[] va) { 79 va[0] = null; 80 } 81 82 public static void test11(MyValue1?[] va) { 83 va[0] = null; 84 } 85 86 static public void main(String[] args) throws Exception { 87 if (args.length == 0) { 88 // Run test in new VM instance 89 String[] arg = {"-XX:+EnableValhalla", "-XX:CompileCommand=quiet", "-XX:CompileCommand=compileonly,TestArrayAccessDeopt::test*", 90 "-XX:+TraceDeoptimization", "-Xbatch", "-XX:-MonomorphicArrayCheck", "TestArrayAccessDeopt", "run"}; 91 OutputAnalyzer oa = ProcessTools.executeTestJvm(arg); 92 String output = oa.getOutput(); 93 oa.shouldNotContain("Uncommon trap occurred"); 94 } else { 95 MyValue1[] va = new MyValue1[1]; 96 MyValue1?[] vaB = new MyValue1?[1]; 97 MyValue1 vt = new MyValue1(); 98 for (int i = 0; i < 10_000; ++i) { 99 test1(va, vt); 100 test1(vaB, vt); 101 test1(vaB, null); 102 test2(va, vt); 103 test2(vaB, vt); 104 test2(vaB, null); 105 test3(va, vt); 106 test3(vaB, vt); 107 test3(vaB, null); 108 test4(va, vt); 109 test4(vaB, vt); 110 test4(vaB, null); 111 test5(va, vt); 112 test5(vaB, vt); 113 test6(va, vt); 114 try { 115 test6(va, null); 116 } catch (NullPointerException npe) { 117 // Expected 118 } 119 test7(va, vt); 120 test8(va, vt); 121 test8(vaB, vt); 122 test9(va, vt); 123 try { 124 test9(va, null); 125 } catch (NullPointerException npe) { 126 // Expected 127 } 128 test10(vaB); 129 test11(vaB); 130 } 131 } 132 } 133 }