1 /*
   2  * Copyright (c) 2009, 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 org.junit.Test;
  26 
  27 import org.graalvm.compiler.jtt.JTTTest;
  28 
  29 /*
  30  * Tests constant folding of integer operations.
  31  */
  32 public class VN_Cast01 extends JTTTest {
  33 
  34     private static class TestClass {
  35         int field = 9;
  36     }
  37 
  38     static final Object object = new TestClass();
  39 
  40     public static int test(int arg) {
  41         if (arg == 0) {
  42             return test1();
  43         }
  44         if (arg == 1) {
  45             return test2();
  46         }
  47         if (arg == 2) {
  48             return test3();
  49         }
  50         return 0;
  51     }
  52 
  53     private static int test1() {
  54         Object o = object;
  55         TestClass a = (TestClass) o;
  56         TestClass b = (TestClass) o;
  57         return a.field + b.field;
  58     }
  59 
  60     private static int test2() {
  61         Object obj = new TestClass();
  62         TestClass a = (TestClass) obj;
  63         TestClass b = (TestClass) obj;
  64         return a.field + b.field;
  65     }
  66 
  67     @SuppressWarnings("all")
  68     private static int test3() {
  69         Object o = null;
  70         TestClass a = (TestClass) o;
  71         TestClass b = (TestClass) o;
  72         return a.field + b.field;
  73     }
  74 
  75     @Test
  76     public void run0() throws Throwable {
  77         runTest("test", 0);
  78     }
  79 
  80     @Test
  81     public void run1() throws Throwable {
  82         runTest("test", 1);
  83     }
  84 
  85     @Test
  86     public void run2() throws Throwable {
  87         runTest("test", 2);
  88     }
  89 
  90 }