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 }