1 /*
   2  * Copyright (c) 2017, 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 package compiler.valhalla.valuetypes;
  25 
  26 
  27 import java.lang.invoke.*;
  28 
  29 import jdk.experimental.value.MethodHandleBuilder;
  30 import jdk.incubator.mvt.ValueType;
  31 
  32 /**
  33  * @test
  34  * @bug 8185339
  35  * @summary Test correct compilation of MethodHandles with bound value type arguments.
  36  * @modules java.base/jdk.experimental.value
  37  *          jdk.incubator.mvt
  38  * @compile -XDenableValueTypes ValueCapableClass2.java TestBoundValueTypes.java
  39  * @run main/othervm -XX:CompileCommand=compileonly,compiler.valhalla.valuetypes.TestBoundValueTypes::*
  40  *                   -XX:CompileCommand=compileonly,java.lang.invoke.*::* compiler.valhalla.valuetypes.TestBoundValueTypes
  41  */
  42 public class TestBoundValueTypes {
  43     static final Object vcc = ValueCapableClass2.create(42L);
  44 
  45     static final MethodHandle mh;
  46     static {
  47         final MethodHandle getU = MethodHandleBuilder.loadCode(MethodHandles.lookup(), "getU",
  48                                         MethodType.methodType(long.class, ValueType.forClass(ValueCapableClass2.class).valueClass()),
  49                                             CODE -> {
  50                                                 CODE.
  51                                                 vload(0).
  52                                                 vbox(ValueCapableClass2.class).
  53                                                 vunbox(ValueType.forClass(ValueCapableClass2.class).valueClass()).
  54                                                 getfield(ValueType.forClass(ValueCapableClass2.class).valueClass(), "u", "J").
  55                                                 lreturn();
  56                                             });
  57         // Bind the value type argument to 'vcc'
  58         mh = MethodHandles.insertArguments(getU, 0, vcc);
  59     }
  60 
  61     long test() throws Throwable {
  62         return (long)mh.invoke();
  63     }
  64 
  65     public static void main(String[] args) throws Throwable {
  66         TestBoundValueTypes t = new TestBoundValueTypes();
  67         for (int i = 0; i < 100_000; ++i) {
  68             if (t.test() != 42) {
  69                 throw new RuntimeException("Test failed");
  70             }
  71         }
  72     }
  73 }