1/* 2 * Copyright (c) 2017, 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 */ 23package org.graalvm.compiler.hotspot.test; 24 25import org.graalvm.compiler.core.common.GraalOptions; 26import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig; 27import org.graalvm.compiler.hotspot.meta.HotSpotClassInitializationPlugin; 28import org.graalvm.compiler.hotspot.nodes.aot.InitializeKlassNode; 29import org.graalvm.compiler.hotspot.nodes.aot.LoadConstantIndirectlyNode; 30import org.graalvm.compiler.hotspot.nodes.aot.ResolveConstantNode; 31import org.graalvm.compiler.hotspot.phases.LoadJavaMirrorWithKlassPhase; 32import org.graalvm.compiler.hotspot.phases.aot.EliminateRedundantInitializationPhase; 33import org.graalvm.compiler.hotspot.phases.aot.ReplaceConstantNodesPhase; 34import org.graalvm.compiler.nodes.StructuredGraph; 35import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions; 36import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderConfiguration.Plugins; 37import org.graalvm.compiler.nodes.spi.LoweringTool; 38import org.graalvm.compiler.options.OptionValues; 39import org.graalvm.compiler.phases.common.CanonicalizerPhase; 40import org.graalvm.compiler.phases.common.LoweringPhase; 41import org.graalvm.compiler.phases.tiers.HighTierContext; 42import org.junit.Assert; 43import org.junit.Test; 44 45public class ReplaceConstantNodesPhaseTest extends HotSpotGraalCompilerTest { 46 private final GraalHotSpotVMConfig config = runtime().getVMConfig(); 47 48 @Override 49 protected Plugins getDefaultGraphBuilderPlugins() { 50 Plugins plugins = super.getDefaultGraphBuilderPlugins(); 51 plugins.setClassInitializationPlugin(new HotSpotClassInitializationPlugin()); 52 return plugins; 53 } 54 55 public static class X { 56 public static int x; 57 public static int y; 58 public static int z; 59 public static Object o; 60 } 61 62 public static class Y extends X { 63 public static int a; 64 public static int b; 65 } 66 67 public static int a; 68 69 public static void assignFields() { 70 X.x = 1; 71 X.y = 2; 72 X.z = 3; 73 } 74 75 public static void assignFieldsInBranches(boolean x) { 76 if (x) { 77 X.y = 1; 78 } else { 79 X.z = 2; 80 } 81 } 82 83 public static void assignFieldsWithDominatingInit(boolean x) { 84 X.x = 1; 85 if (x) { 86 X.y = 2; 87 } else { 88 X.z = 3; 89 } 90 } 91 92 public static void assignString() { 93 X.o = "foo"; 94 } 95 96 public static void assignToParentAndChild() { 97 Y.a = 1; 98 X.x = 2; 99 } 100 101 public static void assignToThis() { 102 a = 1; 103 } 104 105 public static void assignFieldsWithDominatingInitOfParent(boolean x) { 106 Y.a = 1; 107 if (x) { 108 X.y = 2; 109 } else { 110 X.z = 3; 111 } 112 Y.b = 4; 113 } 114 115 private void test(String name, int expectedInits, int expectedResolves, int expectedLoads) { 116 StructuredGraph graph = parseEager(name, AllowAssumptions.NO, new OptionValues(getInitialOptions(), GraalOptions.GeneratePIC, true)); 117 HighTierContext highTierContext = getDefaultHighTierContext(); 118 CanonicalizerPhase canonicalizer = new CanonicalizerPhase(); 119 new EliminateRedundantInitializationPhase().apply(graph, highTierContext); 120 new LoweringPhase(canonicalizer, LoweringTool.StandardLoweringStage.HIGH_TIER).apply(graph, highTierContext); 121 new LoadJavaMirrorWithKlassPhase(config).apply(graph, highTierContext); 122 new ReplaceConstantNodesPhase(false).apply(graph, highTierContext); 123 Assert.assertEquals(expectedInits, graph.getNodes().filter(InitializeKlassNode.class).count()); 124 Assert.assertEquals(expectedResolves, graph.getNodes().filter(ResolveConstantNode.class).count()); 125 Assert.assertEquals(expectedLoads, graph.getNodes().filter(LoadConstantIndirectlyNode.class).count()); 126 } 127 128 @Test 129 public void test1() { 130 test("assignFields", 1, 0, 0); 131 } 132 133 @Test 134 public void test2() { 135 test("assignFieldsWithDominatingInit", 1, 0, 0); 136 } 137 138 @Test 139 public void test3() { 140 test("assignString", 1, 1, 0); 141 } 142 143 @Test 144 public void test4() { 145 test("assignToParentAndChild", 1, 1, 0); 146 } 147 148 @Test 149 public void test5() { 150 test("assignToThis", 0, 0, 1); 151 } 152 153 @Test 154 public void test6() { 155 test("assignFieldsWithDominatingInitOfParent", 1, 1, 0); 156 } 157 158 @Test 159 public void test7() { 160 test("assignFieldsInBranches", 2, 1, 0); 161 } 162} 163