1 /* 2 * Copyright (c) 2018, 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 Check code generation for value creation ops 27 * @modules jdk.compiler/com.sun.tools.javac.util jdk.jdeps/com.sun.tools.javap 28 * @compile ValueCreationTest.java 29 * @run main/othervm -Xverify:none -XX:+EnableValhalla ValueCreationTest 30 * @modules jdk.compiler 31 */ 32 33 import java.io.PrintWriter; 34 import java.io.StringWriter; 35 import java.nio.file.Paths; 36 37 public class ValueCreationTest { 38 39 __ByValue 40 static final class Point { 41 42 final int x; 43 final int y; 44 45 Point () { 46 x = 10; 47 y = 10; 48 } 49 50 static Point makePoint(int x, int y) { 51 Point p = __MakeDefault Point(); 52 p = __WithField(p.x, x); 53 return __WithField(p.y, y); 54 } 55 56 public static void main(String [] args) { 57 Point p = makePoint(10, 20); 58 } 59 } 60 61 public static void main(String[] args) { 62 new ValueCreationTest().run(); 63 } 64 65 void run() { 66 String [] params = new String [] { "-v", 67 Paths.get(System.getProperty("test.classes"), 68 "ValueCreationTest$Point.class").toString() }; 69 runCheck(params, new String [] { 70 71 "0: defaultvalue #4 // class ValueCreationTest$Point", 72 "3: astore_2", 73 "4: aload_2", 74 "5: iload_0", 75 "6: withfield #2 // Field x:I", 76 "9: astore_2", 77 "10: aload_2", 78 "11: iload_1", 79 "12: withfield #3 // Field y:I", 80 "15: areturn" 81 82 }); 83 84 } 85 86 void runCheck(String [] params, String [] expectedOut) { 87 StringWriter s; 88 String out; 89 90 try (PrintWriter pw = new PrintWriter(s = new StringWriter())) { 91 com.sun.tools.javap.Main.run(params, pw); 92 out = s.toString(); 93 } 94 int errors = 0; 95 for (String eo: expectedOut) { 96 if (!out.contains(eo)) { 97 System.err.println("Match not found for string: " + eo); 98 errors++; 99 } 100 } 101 if (errors > 0) { 102 throw new AssertionError("Unexpected javap output: " + out); 103 } 104 } 105 }