1 /* 2 * Copyright (c) 2011, 2018, 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 java.io.BufferedInputStream; 28 import java.io.ByteArrayInputStream; 29 import java.io.FileInputStream; 30 import java.io.IOException; 31 import java.io.InputStream; 32 33 import org.graalvm.compiler.debug.DebugContext; 34 import org.graalvm.compiler.debug.TTY; 35 import org.graalvm.compiler.graph.Node; 36 import org.graalvm.compiler.nodeinfo.Verbosity; 37 import org.graalvm.compiler.nodes.AbstractMergeNode; 38 import org.graalvm.compiler.nodes.PhiNode; 39 import org.graalvm.compiler.nodes.StructuredGraph; 40 import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions; 41 import org.graalvm.compiler.nodes.StructuredGraph.ScheduleResult; 42 import org.graalvm.compiler.nodes.cfg.Block; 43 import org.graalvm.compiler.nodes.java.InstanceOfNode; 44 import org.graalvm.compiler.phases.common.CanonicalizerPhase; 45 import org.graalvm.compiler.phases.common.ConditionalEliminationPhase; 46 import org.graalvm.compiler.phases.schedule.SchedulePhase; 47 import org.junit.Assert; 48 import org.junit.Ignore; 49 import org.junit.Test; 50 51 /** 52 * In the following tests, the scalar type system of the compiler should be complete enough to see 53 * the relation between the different conditions. 54 */ 55 public class TypeSystemTest extends GraalCompilerTest { 56 57 @Test 58 public void test3() { 59 test("test3Snippet", "referenceSnippet3"); 60 } 61 62 public static int referenceSnippet3(Object o) { 63 if (o == null) { 64 return 1; 65 } else { 66 return 2; 67 } 68 } 69 70 @SuppressWarnings("unused") 71 public static int test3Snippet(Object o) { 72 if (o == null) { 73 if (o != null) { 74 return 3; 75 } else { 76 return 1; 77 } 78 } else { 79 return 2; 80 } 81 } 82 83 @Test 84 public void test4() { 85 test("test4Snippet", "referenceSnippet3"); 86 } 87 88 @SuppressWarnings("unused") 89 public static int test4Snippet(Object o) { 90 if (o == null) { 91 Object o2 = Integer.class; 92 if (o == o2) { 93 return 3; 94 } else { 95 return 1; 96 } 97 } else { 98 return 2; 99 } 100 } 101 102 @Test 103 @Ignore 104 public void test5() { 105 test("test5Snippet", "referenceSnippet5"); 106 } 107 108 public static int referenceSnippet5(Object o, Object a) { 109 if (o == null) { 110 if (a == Integer.class) { 111 return 1; 112 } 113 } else { 114 if (a == Double.class) { 115 return 11; 116 } 117 } 118 if (a == Integer.class) { 119 return 3; 120 } 121 return 5; 122 } 123 124 @SuppressWarnings("unused") 125 public static int test5Snippet(Object o, Object a) { 126 if (o == null) { 127 if (a == Integer.class) { 128 if (a == null) { 129 return 10; 130 } 131 return 1; 132 } 133 } else { 134 if (a == Double.class) { 135 if (a != null) { 136 return 11; 137 } 138 return 2; 139 } 140 } 141 if (a == Integer.class) { 142 return 3; 143 } 144 return 5; 145 } 146 147 @Test 148 public void test6() { 149 testHelper("test6Snippet", InstanceOfNode.class); 150 } 151 152 public static int test6Snippet(int i) throws IOException { 153 Object o = null; 154 155 if (i == 5) { 156 o = new FileInputStream("asdf"); 157 } 158 if (i < 10) { 159 o = new ByteArrayInputStream(new byte[]{1, 2, 3}); 160 } 161 if (i > 0) { 162 o = new BufferedInputStream(null); 163 } 164 165 return ((InputStream) o).available(); 166 } 167 168 @Test 169 public void test7() { 170 test("test7Snippet", "referenceSnippet7"); 171 } 172 173 public static int test7Snippet(int x) { 174 return ((x & 0xff) << 10) == ((x & 0x1f) + 1) ? 0 : x; 175 } 176 177 public static int referenceSnippet7(int x) { 178 return x; 179 } 180 181 private void test(String snippet, String referenceSnippet) { 182 StructuredGraph graph = parseEager(snippet, AllowAssumptions.NO); 183 DebugContext debug = graph.getDebug(); 184 debug.dump(DebugContext.BASIC_LEVEL, graph, "Graph"); 185 /* 186 * When using FlowSensitiveReductionPhase instead of ConditionalEliminationPhase, 187 * tail-duplication gets activated thus resulting in a graph with more nodes than the 188 * reference graph. 189 */ 190 new ConditionalEliminationPhase(false).apply(graph, getProviders()); 191 new CanonicalizerPhase().apply(graph, getProviders()); 192 // a second canonicalizer is needed to process nested MaterializeNodes 193 new CanonicalizerPhase().apply(graph, getProviders()); 194 StructuredGraph referenceGraph = parseEager(referenceSnippet, AllowAssumptions.NO); 195 new ConditionalEliminationPhase(false).apply(referenceGraph, getProviders()); 196 new CanonicalizerPhase().apply(referenceGraph, getProviders()); 197 new CanonicalizerPhase().apply(referenceGraph, getProviders()); 198 assertEquals(referenceGraph, graph); 199 } 200 201 @Override 202 protected void assertEquals(StructuredGraph expected, StructuredGraph graph) { 203 DebugContext debug = graph.getDebug(); 204 if (getNodeCountExcludingUnusedConstants(expected) != getNodeCountExcludingUnusedConstants(graph)) { 205 debug.dump(DebugContext.BASIC_LEVEL, expected, "expected (node count)"); 206 debug.dump(DebugContext.BASIC_LEVEL, graph, "graph (node count)"); 207 Assert.fail("Graphs do not have the same number of nodes: " + expected.getNodeCount() + " vs. " + graph.getNodeCount()); 208 } 209 } 210 211 public static void outputGraph(StructuredGraph graph, String message) { 212 TTY.println("========================= " + message); 213 SchedulePhase schedulePhase = new SchedulePhase(graph.getOptions()); 214 schedulePhase.apply(graph); 215 ScheduleResult schedule = graph.getLastSchedule(); 216 for (Block block : schedule.getCFG().getBlocks()) { 217 TTY.print("Block " + block + " "); 218 if (block == schedule.getCFG().getStartBlock()) { 219 TTY.print("* "); 220 } 221 TTY.print("-> "); 222 for (Block succ : block.getSuccessors()) { 223 TTY.print(succ + " "); 224 } 225 TTY.println(); 226 for (Node node : schedule.getBlockToNodesMap().get(block)) { 227 outputNode(node); 228 } 229 } 230 } 231 232 private static void outputNode(Node node) { 233 TTY.print(" " + node + " (usage count: " + node.getUsageCount() + ") (inputs:"); 234 for (Node input : node.inputs()) { 235 TTY.print(" " + input.toString(Verbosity.Id)); 236 } 237 TTY.println(")"); 238 if (node instanceof AbstractMergeNode) { 239 for (PhiNode phi : ((AbstractMergeNode) node).phis()) { 240 outputNode(phi); 241 } 242 } 243 } 244 245 private <T extends Node> void testHelper(String snippet, Class<T> clazz) { 246 StructuredGraph graph = parseEager(snippet, AllowAssumptions.NO); 247 new CanonicalizerPhase().apply(graph, getProviders()); 248 new CanonicalizerPhase().apply(graph, getProviders()); 249 DebugContext debug = graph.getDebug(); 250 debug.dump(DebugContext.BASIC_LEVEL, graph, "Graph " + snippet); 251 Assert.assertFalse("shouldn't have nodes of type " + clazz, graph.getNodes().filter(clazz).iterator().hasNext()); 252 } 253 }