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_Field01 extends JTTTest { 33 34 private static class TestClass { 35 int field = 9; 36 } 37 38 static final TestClass 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 TestClass a = object; 55 return a.field + a.field; 56 } 57 58 private static int test2() { 59 TestClass a = object; 60 TestClass b = object; 61 return a.field + b.field; 62 } 63 64 @SuppressWarnings("all") 65 private static int test3() { 66 TestClass a = null; 67 TestClass b = null; 68 return a.field + b.field; 69 } 70 71 @Test 72 public void run0() throws Throwable { 73 runTest("test", 0); 74 } 75 76 @Test 77 public void run1() throws Throwable { 78 runTest("test", 1); 79 } 80 81 @Test 82 public void run2() throws Throwable { 83 runTest("test", 2); 84 } 85 86 }