1 /* 2 * Copyright (c) 2015, 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 * @bug 8073154 27 * @run main/othervm -XX:TypeProfileLevel=020 28 * -XX:CompileCommand=compileonly,compiler.print.TestProfileReturnTypePrinting::testMethod 29 * -XX:+IgnoreUnrecognizedVMOptions -XX:+PrintLIR 30 * compiler.print.TestProfileReturnTypePrinting 31 * @summary Verify that c1's LIR that contains ProfileType node could be dumped 32 * without a crash disregard to an exact class knowledge. 33 */ 34 35 package compiler.print; 36 37 public class TestProfileReturnTypePrinting { 38 private static final int ITERATIONS = 1_000_000; 39 40 public static void main(String args[]) { 41 for (int i = 0; i < ITERATIONS; i++) { 42 TestProfileReturnTypePrinting.testMethod(i); 43 } 44 } 45 46 private static int testMethod(int i) { 47 return TestProfileReturnTypePrinting.foo().hashCode() 48 + TestProfileReturnTypePrinting.bar(i).hashCode(); 49 } 50 51 /* Exact class of returned value is known statically. */ 52 private static B foo() { 53 return new B(); 54 } 55 56 /* Exact class of returned value is not known statically. */ 57 private static Object bar(int i) { 58 if (i % 2 == 0) { 59 return new A(); 60 } else { 61 return new B(); 62 } 63 } 64 65 private static class A { 66 } 67 68 private static class B extends A { 69 } 70 }