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 package org.graalvm.compiler.jtt.bytecode;
  24 
  25 import org.junit.Test;
  26 
  27 import org.graalvm.compiler.core.phases.HighTier;
  28 import org.graalvm.compiler.jtt.JTTTest;
  29 import org.graalvm.compiler.options.OptionValues;
  30 import org.graalvm.compiler.phases.tiers.Suites;
  31 
  32 /**
  33  * Tests the instanceof works, when casting an array of interface.
  34  */
  35 public class BC_instanceof01 extends JTTTest {
  36 
  37     public interface IObject {
  38 
  39     }
  40 
  41     public interface IDerivedObject extends IObject {
  42 
  43     }
  44 
  45     private static class BaseClass {
  46 
  47     }
  48 
  49     private static class TestClass extends BaseClass implements IObject {
  50     }
  51 
  52     private static class DerivedTestClass extends BaseClass implements IDerivedObject {
  53 
  54     }
  55 
  56     static TestClass[] a1 = {new TestClass()};
  57     static DerivedTestClass[] a2 = {new DerivedTestClass()};
  58 
  59     public static BaseClass[] getBaseClassArray() {
  60         return a1;
  61     }
  62 
  63     public static BaseClass[] getDerivedBaseClassArray() {
  64         return a2;
  65     }
  66 
  67     public static boolean test() {
  68         return getBaseClassArray() instanceof IObject[];
  69     }
  70 
  71     public static int testConditionalElimination() {
  72         BaseClass[] result = getDerivedBaseClassArray();
  73         if (result instanceof IDerivedObject[]) {
  74             if (result instanceof IObject[]) {
  75                 return 1;
  76             } else {
  77                 return 2;
  78             }
  79         } else {
  80             return 3;
  81         }
  82     }
  83 
  84     @Test
  85     public void run0() throws Throwable {
  86         runTest("test");
  87     }
  88 
  89     @Override
  90     @SuppressWarnings("try")
  91     protected Suites createSuites(OptionValues options) {
  92         return super.createSuites(new OptionValues(options, HighTier.Options.Inline, false));
  93     }
  94 
  95     @Test
  96     public void run1() throws Throwable {
  97         runTest("testConditionalElimination");
  98     }
  99 }