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 import org.graalvm.compiler.api.directives.GraalDirectives; 28 29 /** 30 * Collection of tests for 31 * {@link org.graalvm.compiler.phases.common.DominatorConditionalEliminationPhase} including those 32 * that triggered bugs in this phase. 33 */ 34 public class ConditionalEliminationTest5 extends ConditionalEliminationTestBase { 35 36 interface A { 37 } 38 39 interface B extends A { 40 } 41 42 static final class DistinctA { 43 } 44 45 static final class DistinctB { 46 } 47 48 public static int reference1Snippet(Object a) { 49 if (a instanceof B) { 50 return 1; 51 } 52 return 2; 53 } 54 55 public static int test1Snippet(Object a) { 56 if (a instanceof B) { 57 if (a instanceof A) { 58 return 1; 59 } 60 } 61 return 2; 62 } 63 64 @Test 65 public void test1() { 66 testConditionalElimination("test1Snippet", "reference1Snippet"); 67 } 68 69 public static int reference2Snippet(A a) { 70 if (a instanceof B) { 71 return 1; 72 } 73 return 2; 74 } 75 76 public static int test2Snippet(A a) { 77 if (a instanceof B) { 78 B newVal = (B) a; 79 if (newVal != null) { 80 return 1; 81 } 82 } 83 return 2; 84 } 85 86 @Test 87 public void test2() { 88 testConditionalElimination("test2Snippet", "reference2Snippet"); 89 } 90 91 @SuppressWarnings("unused") 92 public static int reference3Snippet(Object a, Object b) { 93 if (a instanceof DistinctA) { 94 DistinctA proxyA = (DistinctA) a; 95 if (b instanceof DistinctB) { 96 return 1; 97 } 98 } 99 return 2; 100 } 101 102 @SuppressWarnings("all") 103 public static int test3Snippet(Object a, Object b) { 104 if (a instanceof DistinctA) { 105 DistinctA proxyA = (DistinctA) a; 106 if (b instanceof DistinctB) { 107 if (proxyA == b) { 108 return 42; 109 } 110 return 1; 111 } 112 } 113 return 2; 114 } 115 116 @Test 117 public void test3() { 118 testConditionalElimination("test3Snippet", "reference3Snippet", true); 119 } 120 121 public static int reference4Snippet(Object a) { 122 if (!(a instanceof B)) { 123 GraalDirectives.deoptimize(); 124 } 125 return 1; 126 } 127 128 public static int test4Snippet1(Object a) { 129 if (!(a instanceof B)) { 130 GraalDirectives.deoptimize(); 131 } 132 if (!(a instanceof A)) { 133 GraalDirectives.deoptimize(); 134 } 135 return 1; 136 } 137 138 public static int test4Snippet2(Object a) { 139 if (!(a instanceof A)) { 140 GraalDirectives.deoptimize(); 141 } 142 if (!(a instanceof B)) { 143 GraalDirectives.deoptimize(); 144 } 145 return 1; 146 } 147 148 @Test 149 public void test4() { 150 testConditionalElimination("test4Snippet1", "reference4Snippet"); 151 testConditionalElimination("test4Snippet2", "reference4Snippet"); 152 } 153 }