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 24 25 package org.graalvm.compiler.core.test; 26 27 import org.graalvm.compiler.api.directives.GraalDirectives; 28 import org.junit.Test; 29 30 /** 31 * Collection of tests for {@link org.graalvm.compiler.phases.common.ConditionalEliminationPhase} 32 * including those that triggered bugs in this phase. 33 */ 34 public class ConditionalEliminationTest1 extends ConditionalEliminationTestBase { 35 protected static int sink3; 36 37 private static final String REFERENCE_SNIPPET = "referenceSnippet"; 38 39 @SuppressWarnings("all") 40 public static void referenceSnippet(int a) { 41 if (a == 0) { 42 sink1 = 1; 43 } 44 sink0 = 0; 45 } 46 47 @Test 48 public void test1() { 49 testConditionalElimination("test1Snippet", REFERENCE_SNIPPET); 50 } 51 52 @SuppressWarnings("all") 53 public static void test1Snippet(int a) { 54 if (a == 0) { 55 if (a == 5) { 56 sink2 = 100; 57 } 58 if (a > 100) { 59 if (a == 0) { 60 sink3 = 200; 61 } 62 } 63 if (a != 2) { 64 sink1 = 1; 65 } 66 } 67 sink0 = 0; 68 } 69 70 @Test 71 public void test2() { 72 testConditionalElimination("test2Snippet", REFERENCE_SNIPPET); 73 } 74 75 @SuppressWarnings("all") 76 public static void test2Snippet(int a) { 77 if (a == 0) { 78 if (a > 100) { 79 if (a == 0) { 80 sink3 = 200; 81 } 82 } 83 if (a != 2) { 84 sink1 = 1; 85 } 86 } 87 sink0 = 0; 88 } 89 90 @Test 91 public void test3() { 92 testConditionalElimination("test3Snippet", REFERENCE_SNIPPET); 93 } 94 95 @SuppressWarnings("all") 96 public static void test3Snippet(int a) { 97 if (a == 0) { 98 if (a < 1) { 99 if (a < 2) { 100 if (a < 3) { 101 if (a > -1) { 102 if (a > -2) { 103 if (a > -3) { 104 if (a == 1) { 105 sink2 = 42; 106 } else { 107 sink1 = 1; 108 } 109 } 110 } 111 } 112 } 113 } 114 } 115 } 116 sink0 = 0; 117 } 118 119 @SuppressWarnings("all") 120 public static void test4Snippet(int a, int b) { 121 if (b < 1) { 122 GraalDirectives.controlFlowAnchor(); 123 if (b < 0) { 124 sink1 = 1; 125 } 126 } 127 sink0 = 0; 128 } 129 130 @Test 131 public void test4() { 132 testConditionalElimination("test4Snippet", "test4Snippet"); 133 } 134 135 @SuppressWarnings("all") 136 public static void test5Snippet(int a, int b) { 137 if ((b & 3) == 0) { 138 GraalDirectives.controlFlowAnchor(); 139 if ((b & 7) == 0) { 140 GraalDirectives.controlFlowAnchor(); 141 sink1 = 1; 142 } 143 } else { 144 GraalDirectives.controlFlowAnchor(); 145 if ((b & 1) == 0) { 146 GraalDirectives.controlFlowAnchor(); 147 sink2 = 2; 148 } 149 } 150 sink0 = 0; 151 } 152 153 @Test 154 public void test5() { 155 testConditionalElimination("test5Snippet", "test5Snippet"); 156 } 157 }