1 /* 2 * Copyright (c) 2015, 2015, 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 org.junit.Test; 26 27 /** 28 * Collection of tests for 29 * {@link org.graalvm.compiler.phases.common.DominatorConditionalEliminationPhase} including those 30 * that triggered bugs in this phase. 31 */ 32 public class ConditionalEliminationTest6 extends ConditionalEliminationTestBase { 33 34 public static final A constA = new A(); 35 public static final B constB = new B(); 36 37 static class A { 38 } 39 40 static class B { 41 } 42 43 @SuppressWarnings("all") 44 public static B reference1Snippet(Object a, B b) { 45 if (a == constA) { 46 return b; 47 } 48 return null; 49 } 50 51 @SuppressWarnings("all") 52 public static B test1Snippet(Object a, B b) { 53 if (a == constA) { 54 if (a == null) { 55 return null; 56 } else { 57 return b; 58 } 59 } 60 return null; 61 } 62 63 @Test 64 public void test1() { 65 testConditionalElimination("test1Snippet", "reference1Snippet"); 66 } 67 68 @SuppressWarnings("all") 69 public static B test2Snippet(Object a, B b) { 70 if (a == constA) { 71 if (a == constB) { 72 return null; 73 } else { 74 return b; 75 } 76 } 77 return null; 78 } 79 80 @Test 81 public void test2() { 82 testConditionalElimination("test2Snippet", "reference1Snippet"); 83 } 84 85 @SuppressWarnings("all") 86 public static B test3Snippet(Object a, B b) { 87 if (a == constA) { 88 if (a == b) { 89 return null; 90 } else { 91 return b; 92 } 93 } 94 return null; 95 } 96 97 @Test 98 public void test3() { 99 testConditionalElimination("test3Snippet", "reference1Snippet"); 100 } 101 }