1 /*
   2  * Copyright (c) 2011, 2012, 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.optimize;
  24 
  25 import java.util.EnumSet;
  26 
  27 import jdk.vm.ci.meta.DeoptimizationReason;
  28 
  29 import org.junit.Test;
  30 
  31 import org.graalvm.compiler.jtt.JTTTest;
  32 
  33 public class ConditionalElimination02 extends JTTTest {
  34 
  35     private static Object o = null;
  36 
  37     private static class A {
  38 
  39         A(int y) {
  40             this.y = y;
  41         }
  42 
  43         int y;
  44     }
  45 
  46     public int test(A a, boolean isNull, boolean isVeryNull) {
  47         if (o == null) {
  48             if (!isNull) {
  49                 if (o == null) {
  50                     return a.y;
  51                 }
  52             }
  53             if (!isVeryNull) {
  54                 if (o == null) {
  55                     return a.y;
  56                 }
  57             }
  58         }
  59         return -1;
  60     }
  61 
  62     @Test
  63     public void run0() throws Throwable {
  64         runTest(EnumSet.of(DeoptimizationReason.NullCheckException), "test", new A(5), false, false);
  65     }
  66 
  67     @Test
  68     public void run1() throws Throwable {
  69         runTest(EnumSet.of(DeoptimizationReason.NullCheckException), "test", new Object[]{null, true, true});
  70     }
  71 
  72 }