HotSpotWordOperationPlugin.java revision 12995:5e441a7ec5e3
1/* 2 * Copyright (c) 2015, 2016, 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.meta; 24 25import static org.graalvm.compiler.core.common.LocationIdentity.any; 26import static org.graalvm.compiler.hotspot.word.HotSpotOperation.HotspotOpcode.POINTER_EQ; 27import static org.graalvm.compiler.hotspot.word.HotSpotOperation.HotspotOpcode.POINTER_NE; 28import static org.graalvm.compiler.nodes.ConstantNode.forBoolean; 29 30import org.graalvm.compiler.api.replacements.SnippetReflectionProvider; 31import org.graalvm.compiler.bytecode.BridgeMethodUtils; 32import org.graalvm.compiler.core.common.LocationIdentity; 33import org.graalvm.compiler.core.common.type.Stamp; 34import org.graalvm.compiler.core.common.type.StampFactory; 35import org.graalvm.compiler.debug.GraalError; 36import org.graalvm.compiler.hotspot.nodes.LoadIndexedPointerNode; 37import org.graalvm.compiler.hotspot.nodes.type.KlassPointerStamp; 38import org.graalvm.compiler.hotspot.nodes.type.MetaspacePointerStamp; 39import org.graalvm.compiler.hotspot.nodes.type.MethodPointerStamp; 40import org.graalvm.compiler.hotspot.word.HotSpotOperation; 41import org.graalvm.compiler.hotspot.word.HotSpotOperation.HotspotOpcode; 42import org.graalvm.compiler.hotspot.word.PointerCastNode; 43import org.graalvm.compiler.nodes.LogicNode; 44import org.graalvm.compiler.nodes.ValueNode; 45import org.graalvm.compiler.nodes.calc.ConditionalNode; 46import org.graalvm.compiler.nodes.calc.IsNullNode; 47import org.graalvm.compiler.nodes.calc.PointerEqualsNode; 48import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderContext; 49import org.graalvm.compiler.nodes.java.LoadIndexedNode; 50import org.graalvm.compiler.nodes.memory.HeapAccess.BarrierType; 51import org.graalvm.compiler.nodes.memory.ReadNode; 52import org.graalvm.compiler.nodes.memory.address.AddressNode; 53import org.graalvm.compiler.nodes.type.StampTool; 54import org.graalvm.compiler.replacements.WordOperationPlugin; 55import org.graalvm.compiler.word.WordTypes; 56 57import jdk.vm.ci.meta.JavaKind; 58import jdk.vm.ci.meta.ResolvedJavaMethod; 59import jdk.vm.ci.meta.ResolvedJavaType; 60 61/** 62 * Extends {@link WordOperationPlugin} to handle {@linkplain HotSpotOperation HotSpot word 63 * operations}. 64 */ 65class HotSpotWordOperationPlugin extends WordOperationPlugin { 66 HotSpotWordOperationPlugin(SnippetReflectionProvider snippetReflection, WordTypes wordTypes) { 67 super(snippetReflection, wordTypes); 68 } 69 70 @Override 71 protected LoadIndexedNode createLoadIndexedNode(ValueNode array, ValueNode index) { 72 ResolvedJavaType arrayType = StampTool.typeOrNull(array); 73 Stamp componentStamp = wordTypes.getWordStamp(arrayType.getComponentType()); 74 if (componentStamp instanceof MetaspacePointerStamp) { 75 return new LoadIndexedPointerNode(componentStamp, array, index); 76 } else { 77 return super.createLoadIndexedNode(array, index); 78 } 79 } 80 81 @Override 82 public boolean handleInvoke(GraphBuilderContext b, ResolvedJavaMethod method, ValueNode[] args) { 83 if (!wordTypes.isWordOperation(method)) { 84 return false; 85 } 86 87 HotSpotOperation operation = BridgeMethodUtils.getAnnotation(HotSpotOperation.class, method); 88 if (operation == null) { 89 processWordOperation(b, args, wordTypes.getWordOperation(method, b.getMethod().getDeclaringClass())); 90 return true; 91 } 92 processHotSpotWordOperation(b, method, args, operation); 93 return true; 94 } 95 96 protected void processHotSpotWordOperation(GraphBuilderContext b, ResolvedJavaMethod method, ValueNode[] args, HotSpotOperation operation) { 97 JavaKind returnKind = method.getSignature().getReturnKind(); 98 switch (operation.opcode()) { 99 case POINTER_EQ: 100 case POINTER_NE: 101 assert args.length == 2; 102 HotspotOpcode opcode = operation.opcode(); 103 ValueNode left = args[0]; 104 ValueNode right = args[1]; 105 assert left.stamp() instanceof MetaspacePointerStamp : left + " " + left.stamp(); 106 assert right.stamp() instanceof MetaspacePointerStamp : right + " " + right.stamp(); 107 assert opcode == POINTER_EQ || opcode == POINTER_NE; 108 109 PointerEqualsNode comparison = b.add(new PointerEqualsNode(left, right)); 110 ValueNode eqValue = b.add(forBoolean(opcode == POINTER_EQ)); 111 ValueNode neValue = b.add(forBoolean(opcode == POINTER_NE)); 112 b.addPush(returnKind, ConditionalNode.create(comparison, eqValue, neValue)); 113 break; 114 115 case IS_NULL: 116 assert args.length == 1; 117 ValueNode pointer = args[0]; 118 assert pointer.stamp() instanceof MetaspacePointerStamp; 119 120 LogicNode isNull = b.add(IsNullNode.create(pointer)); 121 b.addPush(returnKind, ConditionalNode.create(isNull, b.add(forBoolean(true)), b.add(forBoolean(false)))); 122 break; 123 124 case FROM_POINTER: 125 assert args.length == 1; 126 b.addPush(returnKind, new PointerCastNode(StampFactory.forKind(wordKind), args[0])); 127 break; 128 129 case TO_KLASS_POINTER: 130 assert args.length == 1; 131 b.addPush(returnKind, new PointerCastNode(KlassPointerStamp.klass(), args[0])); 132 break; 133 134 case TO_METHOD_POINTER: 135 assert args.length == 1; 136 b.addPush(returnKind, new PointerCastNode(MethodPointerStamp.method(), args[0])); 137 break; 138 139 case READ_KLASS_POINTER: 140 assert args.length == 2 || args.length == 3; 141 Stamp readStamp = KlassPointerStamp.klass(); 142 AddressNode address = makeAddress(b, args[0], args[1]); 143 LocationIdentity location; 144 if (args.length == 2) { 145 location = any(); 146 } else { 147 assert args[2].isConstant(); 148 location = snippetReflection.asObject(LocationIdentity.class, args[2].asJavaConstant()); 149 } 150 ReadNode read = b.add(new ReadNode(address, location, readStamp, BarrierType.NONE)); 151 b.push(returnKind, read); 152 break; 153 154 default: 155 throw GraalError.shouldNotReachHere("unknown operation: " + operation.opcode()); 156 } 157 } 158} 159