1 /*
   2  * Copyright (c) 2011, 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.core.test;
  24 
  25 import java.io.Serializable;
  26 import java.util.ArrayList;
  27 import java.util.List;
  28 
  29 import org.junit.Test;
  30 
  31 public class IfReorderTest extends GraalCompilerTest {
  32 
  33     private static Object fieldA = Integer.class;
  34     private static Object fieldB = Double.class;
  35 
  36     @Test
  37     public void test1() {
  38         test("test1Snippet", new ArrayList<>());
  39     }
  40 
  41     public static Object test1Snippet(Object o) {
  42         /*
  43          * Serializable and List are not mutually exclusive, so these two IFs should never be
  44          * reordered.
  45          */
  46         if (branchProbability(0.1, o instanceof Serializable)) {
  47             return fieldA;
  48         }
  49         if (branchProbability(0.9, o instanceof List)) {
  50             return fieldB;
  51         }
  52         return null;
  53     }
  54 
  55 }