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.hotspot.meta; 26 27 import static jdk.vm.ci.services.Services.IS_IN_NATIVE_IMAGE; 28 import static org.graalvm.compiler.core.common.GraalOptions.AlwaysInlineVTableStubs; 29 import static org.graalvm.compiler.core.common.GraalOptions.InlineVTableStubs; 30 import static org.graalvm.compiler.core.common.GraalOptions.OmitHotExceptionStacktrace; 31 import static org.graalvm.compiler.hotspot.meta.HotSpotForeignCallsProviderImpl.OSR_MIGRATION_END; 32 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.CLASS_KLASS_LOCATION; 33 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.CLASS_MIRROR_HANDLE_LOCATION; 34 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.CLASS_MIRROR_LOCATION; 35 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.COMPRESSED_HUB_LOCATION; 36 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.DISPLACED_MARK_WORD_LOCATION; 37 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.HUB_LOCATION; 38 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.HUB_WRITE_LOCATION; 39 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.KLASS_LAYOUT_HELPER_LOCATION; 40 import static org.graalvm.compiler.hotspot.replacements.HotSpotReplacementsUtil.OBJ_ARRAY_KLASS_ELEMENT_KLASS_LOCATION; 41 import static jdk.internal.vm.compiler.word.LocationIdentity.any; 42 43 import java.lang.ref.Reference; 44 import java.util.EnumMap; 45 46 import org.graalvm.compiler.api.directives.GraalDirectives; 47 import org.graalvm.compiler.core.common.CompressEncoding; 48 import org.graalvm.compiler.core.common.GraalOptions; 49 import org.graalvm.compiler.core.common.spi.ForeignCallDescriptor; 50 import org.graalvm.compiler.core.common.spi.ForeignCallsProvider; 51 import org.graalvm.compiler.core.common.type.ObjectStamp; 52 import org.graalvm.compiler.core.common.type.Stamp; 53 import org.graalvm.compiler.core.common.type.StampFactory; 54 import org.graalvm.compiler.core.common.type.StampPair; 55 import org.graalvm.compiler.debug.DebugCloseable; 56 import org.graalvm.compiler.debug.DebugHandlersFactory; 57 import org.graalvm.compiler.debug.GraalError; 58 import org.graalvm.compiler.graph.Node; 59 import org.graalvm.compiler.graph.NodeInputList; 60 import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig; 61 import org.graalvm.compiler.hotspot.HotSpotGraalRuntimeProvider; 62 import org.graalvm.compiler.hotspot.gc.g1.G1ArrayRangePostWriteBarrier; 63 import org.graalvm.compiler.hotspot.gc.g1.G1ArrayRangePreWriteBarrier; 64 import org.graalvm.compiler.hotspot.gc.g1.G1PostWriteBarrier; 65 import org.graalvm.compiler.hotspot.gc.g1.G1PreWriteBarrier; 66 import org.graalvm.compiler.hotspot.gc.g1.G1ReferentFieldReadBarrier; 67 import org.graalvm.compiler.hotspot.gc.shared.SerialArrayRangeWriteBarrier; 68 import org.graalvm.compiler.hotspot.gc.shared.SerialWriteBarrier; 69 import org.graalvm.compiler.hotspot.nodes.BeginLockScopeNode; 70 import org.graalvm.compiler.hotspot.nodes.HotSpotCompressionNode; 71 import org.graalvm.compiler.hotspot.nodes.HotSpotDirectCallTargetNode; 72 import org.graalvm.compiler.hotspot.nodes.HotSpotIndirectCallTargetNode; 73 import org.graalvm.compiler.hotspot.nodes.aot.InitializeKlassNode; 74 import org.graalvm.compiler.hotspot.nodes.aot.ResolveConstantNode; 75 import org.graalvm.compiler.hotspot.nodes.aot.ResolveDynamicConstantNode; 76 import org.graalvm.compiler.hotspot.nodes.aot.ResolveMethodAndLoadCountersNode; 77 import org.graalvm.compiler.hotspot.nodes.profiling.ProfileNode; 78 import org.graalvm.compiler.hotspot.nodes.type.HotSpotNarrowOopStamp; 79 import org.graalvm.compiler.hotspot.nodes.type.KlassPointerStamp; 80 import org.graalvm.compiler.hotspot.nodes.type.MethodPointerStamp; 81 import org.graalvm.compiler.hotspot.replacements.AssertionSnippets; 82 import org.graalvm.compiler.hotspot.replacements.ClassGetHubNode; 83 import org.graalvm.compiler.hotspot.replacements.HashCodeSnippets; 84 import org.graalvm.compiler.hotspot.replacements.HubGetClassNode; 85 import org.graalvm.compiler.hotspot.replacements.IdentityHashCodeNode; 86 import org.graalvm.compiler.hotspot.replacements.InstanceOfSnippets; 87 import org.graalvm.compiler.hotspot.replacements.KlassLayoutHelperNode; 88 import org.graalvm.compiler.hotspot.replacements.LoadExceptionObjectSnippets; 89 import org.graalvm.compiler.hotspot.replacements.MonitorSnippets; 90 import org.graalvm.compiler.hotspot.replacements.NewObjectSnippets; 91 import org.graalvm.compiler.hotspot.replacements.ObjectCloneSnippets; 92 import org.graalvm.compiler.hotspot.replacements.StringToBytesSnippets; 93 import org.graalvm.compiler.hotspot.replacements.UnsafeLoadSnippets; 94 import org.graalvm.compiler.hotspot.replacements.WriteBarrierSnippets; 95 import org.graalvm.compiler.hotspot.replacements.aot.ResolveConstantSnippets; 96 import org.graalvm.compiler.hotspot.replacements.arraycopy.HotSpotArraycopySnippets; 97 import org.graalvm.compiler.hotspot.replacements.profiling.ProfileSnippets; 98 import org.graalvm.compiler.hotspot.stubs.ForeignCallSnippets; 99 import org.graalvm.compiler.hotspot.word.KlassPointer; 100 import org.graalvm.compiler.nodes.AbstractBeginNode; 101 import org.graalvm.compiler.nodes.AbstractDeoptimizeNode; 102 import org.graalvm.compiler.nodes.CompressionNode.CompressionOp; 103 import org.graalvm.compiler.nodes.ComputeObjectAddressNode; 104 import org.graalvm.compiler.nodes.ConstantNode; 105 import org.graalvm.compiler.nodes.FixedNode; 106 import org.graalvm.compiler.nodes.GetObjectAddressNode; 107 import org.graalvm.compiler.nodes.Invoke; 108 import org.graalvm.compiler.nodes.LogicNode; 109 import org.graalvm.compiler.nodes.LoweredCallTargetNode; 110 import org.graalvm.compiler.nodes.NodeView; 111 import org.graalvm.compiler.nodes.ParameterNode; 112 import org.graalvm.compiler.nodes.SafepointNode; 113 import org.graalvm.compiler.nodes.StartNode; 114 import org.graalvm.compiler.nodes.StructuredGraph; 115 import org.graalvm.compiler.nodes.UnwindNode; 116 import org.graalvm.compiler.nodes.ValueNode; 117 import org.graalvm.compiler.nodes.calc.AddNode; 118 import org.graalvm.compiler.nodes.calc.FloatingNode; 119 import org.graalvm.compiler.nodes.calc.IntegerDivRemNode; 120 import org.graalvm.compiler.nodes.calc.IsNullNode; 121 import org.graalvm.compiler.nodes.calc.RemNode; 122 import org.graalvm.compiler.nodes.debug.StringToBytesNode; 123 import org.graalvm.compiler.nodes.debug.VerifyHeapNode; 124 import org.graalvm.compiler.nodes.extended.BytecodeExceptionNode; 125 import org.graalvm.compiler.nodes.extended.BytecodeExceptionNode.BytecodeExceptionKind; 126 import org.graalvm.compiler.nodes.extended.ForeignCallNode; 127 import org.graalvm.compiler.nodes.extended.GetClassNode; 128 import org.graalvm.compiler.nodes.extended.GuardedUnsafeLoadNode; 129 import org.graalvm.compiler.nodes.extended.LoadHubNode; 130 import org.graalvm.compiler.nodes.extended.LoadMethodNode; 131 import org.graalvm.compiler.nodes.extended.OSRLocalNode; 132 import org.graalvm.compiler.nodes.extended.OSRLockNode; 133 import org.graalvm.compiler.nodes.extended.OSRMonitorEnterNode; 134 import org.graalvm.compiler.nodes.extended.OSRStartNode; 135 import org.graalvm.compiler.nodes.extended.RawLoadNode; 136 import org.graalvm.compiler.nodes.extended.StoreHubNode; 137 import org.graalvm.compiler.nodes.java.ClassIsAssignableFromNode; 138 import org.graalvm.compiler.nodes.java.DynamicNewArrayNode; 139 import org.graalvm.compiler.nodes.java.DynamicNewInstanceNode; 140 import org.graalvm.compiler.nodes.java.InstanceOfDynamicNode; 141 import org.graalvm.compiler.nodes.java.InstanceOfNode; 142 import org.graalvm.compiler.nodes.java.LoadExceptionObjectNode; 143 import org.graalvm.compiler.nodes.java.MethodCallTargetNode; 144 import org.graalvm.compiler.nodes.java.MonitorExitNode; 145 import org.graalvm.compiler.nodes.java.MonitorIdNode; 146 import org.graalvm.compiler.nodes.java.NewArrayNode; 147 import org.graalvm.compiler.nodes.java.NewInstanceNode; 148 import org.graalvm.compiler.nodes.java.NewMultiArrayNode; 149 import org.graalvm.compiler.nodes.java.RawMonitorEnterNode; 150 import org.graalvm.compiler.nodes.memory.FloatingReadNode; 151 import org.graalvm.compiler.nodes.memory.HeapAccess.BarrierType; 152 import org.graalvm.compiler.nodes.memory.ReadNode; 153 import org.graalvm.compiler.nodes.memory.WriteNode; 154 import org.graalvm.compiler.nodes.memory.address.AddressNode; 155 import org.graalvm.compiler.nodes.spi.LoweringProvider; 156 import org.graalvm.compiler.nodes.spi.LoweringTool; 157 import org.graalvm.compiler.nodes.spi.StampProvider; 158 import org.graalvm.compiler.nodes.type.StampTool; 159 import org.graalvm.compiler.nodes.util.GraphUtil; 160 import org.graalvm.compiler.options.OptionValues; 161 import org.graalvm.compiler.replacements.DefaultJavaLoweringProvider; 162 import org.graalvm.compiler.replacements.arraycopy.ArrayCopyNode; 163 import org.graalvm.compiler.replacements.arraycopy.ArrayCopySnippets; 164 import org.graalvm.compiler.replacements.arraycopy.ArrayCopyWithDelayedLoweringNode; 165 import org.graalvm.compiler.replacements.nodes.AssertionNode; 166 import org.graalvm.compiler.serviceprovider.JavaVersionUtil; 167 import jdk.internal.vm.compiler.word.LocationIdentity; 168 169 import jdk.vm.ci.code.TargetDescription; 170 import jdk.vm.ci.hotspot.HotSpotCallingConventionType; 171 import jdk.vm.ci.hotspot.HotSpotConstantReflectionProvider; 172 import jdk.vm.ci.hotspot.HotSpotResolvedJavaField; 173 import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod; 174 import jdk.vm.ci.meta.JavaConstant; 175 import jdk.vm.ci.meta.JavaKind; 176 import jdk.vm.ci.meta.JavaType; 177 import jdk.vm.ci.meta.MetaAccessProvider; 178 import jdk.vm.ci.meta.ResolvedJavaField; 179 import jdk.vm.ci.meta.ResolvedJavaType; 180 181 /** 182 * HotSpot implementation of {@link LoweringProvider}. 183 */ 184 public class DefaultHotSpotLoweringProvider extends DefaultJavaLoweringProvider implements HotSpotLoweringProvider { 185 186 protected final HotSpotGraalRuntimeProvider runtime; 187 protected final HotSpotRegistersProvider registers; 188 protected final HotSpotConstantReflectionProvider constantReflection; 189 190 protected InstanceOfSnippets.Templates instanceofSnippets; 191 protected NewObjectSnippets.Templates newObjectSnippets; 192 protected MonitorSnippets.Templates monitorSnippets; 193 protected WriteBarrierSnippets.Templates writeBarrierSnippets; 194 protected LoadExceptionObjectSnippets.Templates exceptionObjectSnippets; 195 protected UnsafeLoadSnippets.Templates unsafeLoadSnippets; 196 protected AssertionSnippets.Templates assertionSnippets; 197 protected ArrayCopySnippets.Templates arraycopySnippets; 198 protected StringToBytesSnippets.Templates stringToBytesSnippets; 199 protected HashCodeSnippets.Templates hashCodeSnippets; 200 protected ResolveConstantSnippets.Templates resolveConstantSnippets; 201 protected ProfileSnippets.Templates profileSnippets; 202 203 protected ObjectCloneSnippets.Templates objectCloneSnippets; 204 protected ForeignCallSnippets.Templates foreignCallSnippets; 205 206 public DefaultHotSpotLoweringProvider(HotSpotGraalRuntimeProvider runtime, MetaAccessProvider metaAccess, ForeignCallsProvider foreignCalls, HotSpotRegistersProvider registers, 207 HotSpotConstantReflectionProvider constantReflection, TargetDescription target) { 208 super(metaAccess, foreignCalls, target, runtime.getVMConfig().useCompressedOops); 209 this.runtime = runtime; 210 this.registers = registers; 211 this.constantReflection = constantReflection; 212 } 213 214 @Override 215 public void initialize(OptionValues options, Iterable<DebugHandlersFactory> factories, HotSpotProviders providers, GraalHotSpotVMConfig config) { 216 super.initialize(options, factories, runtime, providers, providers.getSnippetReflection()); 217 218 assert target == providers.getCodeCache().getTarget(); 219 instanceofSnippets = new InstanceOfSnippets.Templates(options, factories, runtime, providers, target); 220 newObjectSnippets = new NewObjectSnippets.Templates(options, factories, runtime, providers, target, config); 221 monitorSnippets = new MonitorSnippets.Templates(options, factories, runtime, providers, target, config.useFastLocking); 222 writeBarrierSnippets = new WriteBarrierSnippets.Templates(options, factories, runtime, providers, target, config); 223 exceptionObjectSnippets = new LoadExceptionObjectSnippets.Templates(options, factories, providers, target); 224 unsafeLoadSnippets = new UnsafeLoadSnippets.Templates(options, factories, providers, target); 225 assertionSnippets = new AssertionSnippets.Templates(options, factories, providers, target); 226 arraycopySnippets = new ArrayCopySnippets.Templates(new HotSpotArraycopySnippets(), options, factories, runtime, providers, providers.getSnippetReflection(), target); 227 stringToBytesSnippets = new StringToBytesSnippets.Templates(options, factories, providers, target); 228 hashCodeSnippets = new HashCodeSnippets.Templates(options, factories, providers, target); 229 resolveConstantSnippets = new ResolveConstantSnippets.Templates(options, factories, providers, target); 230 if (!JavaVersionUtil.Java8OrEarlier) { 231 profileSnippets = new ProfileSnippets.Templates(options, factories, providers, target); 232 } 233 objectCloneSnippets = new ObjectCloneSnippets.Templates(options, factories, providers, target); 234 foreignCallSnippets = new ForeignCallSnippets.Templates(options, factories, providers, target); 235 } 236 237 public ArrayCopySnippets.Templates getArraycopySnippets() { 238 return arraycopySnippets; 239 } 240 241 public MonitorSnippets.Templates getMonitorSnippets() { 242 return monitorSnippets; 243 } 244 245 @Override 246 @SuppressWarnings("try") 247 public void lower(Node n, LoweringTool tool) { 248 StructuredGraph graph = (StructuredGraph) n.graph(); 249 try (DebugCloseable context = n.withNodeSourcePosition()) { 250 if (n instanceof Invoke) { 251 lowerInvoke((Invoke) n, tool, graph); 252 } else if (n instanceof LoadMethodNode) { 253 lowerLoadMethodNode((LoadMethodNode) n); 254 } else if (n instanceof GetClassNode) { 255 lowerGetClassNode((GetClassNode) n, tool, graph); 256 } else if (n instanceof StoreHubNode) { 257 lowerStoreHubNode((StoreHubNode) n, graph); 258 } else if (n instanceof OSRStartNode) { 259 lowerOSRStartNode((OSRStartNode) n); 260 } else if (n instanceof BytecodeExceptionNode) { 261 lowerBytecodeExceptionNode((BytecodeExceptionNode) n); 262 } else if (n instanceof InstanceOfNode) { 263 InstanceOfNode instanceOfNode = (InstanceOfNode) n; 264 if (graph.getGuardsStage().areDeoptsFixed()) { 265 instanceofSnippets.lower(instanceOfNode, tool); 266 } else { 267 if (instanceOfNode.allowsNull()) { 268 ValueNode object = instanceOfNode.getValue(); 269 LogicNode newTypeCheck = graph.addOrUniqueWithInputs(InstanceOfNode.create(instanceOfNode.type(), object, instanceOfNode.profile(), instanceOfNode.getAnchor())); 270 LogicNode newNode = LogicNode.or(graph.unique(IsNullNode.create(object)), newTypeCheck, GraalDirectives.UNLIKELY_PROBABILITY); 271 instanceOfNode.replaceAndDelete(newNode); 272 } 273 } 274 } else if (n instanceof InstanceOfDynamicNode) { 275 InstanceOfDynamicNode instanceOfDynamicNode = (InstanceOfDynamicNode) n; 276 if (graph.getGuardsStage().areDeoptsFixed()) { 277 instanceofSnippets.lower(instanceOfDynamicNode, tool); 278 } else { 279 ValueNode mirror = instanceOfDynamicNode.getMirrorOrHub(); 280 if (mirror.stamp(NodeView.DEFAULT).getStackKind() == JavaKind.Object) { 281 ClassGetHubNode classGetHub = graph.unique(new ClassGetHubNode(mirror)); 282 instanceOfDynamicNode.setMirror(classGetHub); 283 } 284 285 if (instanceOfDynamicNode.allowsNull()) { 286 ValueNode object = instanceOfDynamicNode.getObject(); 287 LogicNode newTypeCheck = graph.addOrUniqueWithInputs( 288 InstanceOfDynamicNode.create(graph.getAssumptions(), tool.getConstantReflection(), instanceOfDynamicNode.getMirrorOrHub(), object, false)); 289 LogicNode newNode = LogicNode.or(graph.unique(IsNullNode.create(object)), newTypeCheck, GraalDirectives.UNLIKELY_PROBABILITY); 290 instanceOfDynamicNode.replaceAndDelete(newNode); 291 } 292 } 293 } else if (n instanceof ClassIsAssignableFromNode) { 294 if (graph.getGuardsStage().areDeoptsFixed()) { 295 instanceofSnippets.lower((ClassIsAssignableFromNode) n, tool); 296 } 297 } else if (n instanceof NewInstanceNode) { 298 if (graph.getGuardsStage().areFrameStatesAtDeopts()) { 299 newObjectSnippets.lower((NewInstanceNode) n, registers, tool); 300 } 301 } else if (n instanceof DynamicNewInstanceNode) { 302 DynamicNewInstanceNode newInstanceNode = (DynamicNewInstanceNode) n; 303 if (newInstanceNode.getClassClass() == null) { 304 JavaConstant classClassMirror = constantReflection.asJavaClass(metaAccess.lookupJavaType(Class.class)); 305 ConstantNode classClass = ConstantNode.forConstant(classClassMirror, tool.getMetaAccess(), graph); 306 newInstanceNode.setClassClass(classClass); 307 } 308 if (graph.getGuardsStage().areFrameStatesAtDeopts()) { 309 newObjectSnippets.lower(newInstanceNode, registers, tool); 310 } 311 } else if (n instanceof NewArrayNode) { 312 if (graph.getGuardsStage().areFrameStatesAtDeopts()) { 313 newObjectSnippets.lower((NewArrayNode) n, registers, tool); 314 } 315 } else if (n instanceof DynamicNewArrayNode) { 316 DynamicNewArrayNode dynamicNewArrayNode = (DynamicNewArrayNode) n; 317 if (dynamicNewArrayNode.getVoidClass() == null) { 318 JavaConstant voidClassMirror = constantReflection.asJavaClass(metaAccess.lookupJavaType(void.class)); 319 ConstantNode voidClass = ConstantNode.forConstant(voidClassMirror, tool.getMetaAccess(), graph); 320 dynamicNewArrayNode.setVoidClass(voidClass); 321 } 322 if (graph.getGuardsStage().areFrameStatesAtDeopts()) { 323 newObjectSnippets.lower(dynamicNewArrayNode, registers, tool); 324 } 325 } else if (n instanceof VerifyHeapNode) { 326 if (graph.getGuardsStage().areFrameStatesAtDeopts()) { 327 newObjectSnippets.lower((VerifyHeapNode) n, registers, tool); 328 } 329 } else if (n instanceof RawMonitorEnterNode) { 330 if (graph.getGuardsStage().areFrameStatesAtDeopts()) { 331 monitorSnippets.lower((RawMonitorEnterNode) n, registers, tool); 332 } 333 } else if (n instanceof MonitorExitNode) { 334 if (graph.getGuardsStage().areFrameStatesAtDeopts()) { 335 monitorSnippets.lower((MonitorExitNode) n, registers, tool); 336 } 337 } else if (n instanceof ArrayCopyNode) { 338 arraycopySnippets.lower((ArrayCopyNode) n, tool); 339 } else if (n instanceof ArrayCopyWithDelayedLoweringNode) { 340 arraycopySnippets.lower((ArrayCopyWithDelayedLoweringNode) n, tool); 341 } else if (n instanceof G1PreWriteBarrier) { 342 writeBarrierSnippets.lower((G1PreWriteBarrier) n, registers, tool); 343 } else if (n instanceof G1PostWriteBarrier) { 344 writeBarrierSnippets.lower((G1PostWriteBarrier) n, registers, tool); 345 } else if (n instanceof G1ReferentFieldReadBarrier) { 346 writeBarrierSnippets.lower((G1ReferentFieldReadBarrier) n, registers, tool); 347 } else if (n instanceof SerialWriteBarrier) { 348 writeBarrierSnippets.lower((SerialWriteBarrier) n, tool); 349 } else if (n instanceof SerialArrayRangeWriteBarrier) { 350 writeBarrierSnippets.lower((SerialArrayRangeWriteBarrier) n, tool); 351 } else if (n instanceof G1ArrayRangePreWriteBarrier) { 352 writeBarrierSnippets.lower((G1ArrayRangePreWriteBarrier) n, registers, tool); 353 } else if (n instanceof G1ArrayRangePostWriteBarrier) { 354 writeBarrierSnippets.lower((G1ArrayRangePostWriteBarrier) n, registers, tool); 355 } else if (n instanceof NewMultiArrayNode) { 356 if (graph.getGuardsStage().areFrameStatesAtDeopts()) { 357 newObjectSnippets.lower((NewMultiArrayNode) n, tool); 358 } 359 } else if (n instanceof LoadExceptionObjectNode) { 360 exceptionObjectSnippets.lower((LoadExceptionObjectNode) n, registers, tool); 361 } else if (n instanceof AssertionNode) { 362 assertionSnippets.lower((AssertionNode) n, tool); 363 } else if (n instanceof StringToBytesNode) { 364 if (graph.getGuardsStage().areDeoptsFixed()) { 365 stringToBytesSnippets.lower((StringToBytesNode) n, tool); 366 } 367 } else if (n instanceof IntegerDivRemNode) { 368 // Nothing to do for division nodes. The HotSpot signal handler catches divisions by 369 // zero and the MIN_VALUE / -1 cases. 370 } else if (n instanceof AbstractDeoptimizeNode || n instanceof UnwindNode || n instanceof RemNode || n instanceof SafepointNode) { 371 /* No lowering, we generate LIR directly for these nodes. */ 372 } else if (n instanceof ClassGetHubNode) { 373 lowerClassGetHubNode((ClassGetHubNode) n, tool); 374 } else if (n instanceof HubGetClassNode) { 375 lowerHubGetClassNode((HubGetClassNode) n, tool); 376 } else if (n instanceof KlassLayoutHelperNode) { 377 lowerKlassLayoutHelperNode((KlassLayoutHelperNode) n, tool); 378 } else if (n instanceof ComputeObjectAddressNode) { 379 if (graph.getGuardsStage().areFrameStatesAtDeopts()) { 380 lowerComputeObjectAddressNode((ComputeObjectAddressNode) n); 381 } 382 } else if (n instanceof IdentityHashCodeNode) { 383 hashCodeSnippets.lower((IdentityHashCodeNode) n, tool); 384 } else if (n instanceof ResolveDynamicConstantNode) { 385 if (graph.getGuardsStage().areFrameStatesAtDeopts()) { 386 resolveConstantSnippets.lower((ResolveDynamicConstantNode) n, tool); 387 } 388 } else if (n instanceof ResolveConstantNode) { 389 if (graph.getGuardsStage().areFrameStatesAtDeopts()) { 390 resolveConstantSnippets.lower((ResolveConstantNode) n, tool); 391 } 392 } else if (n instanceof ResolveMethodAndLoadCountersNode) { 393 if (graph.getGuardsStage().areFrameStatesAtDeopts()) { 394 resolveConstantSnippets.lower((ResolveMethodAndLoadCountersNode) n, tool); 395 } 396 } else if (n instanceof InitializeKlassNode) { 397 if (graph.getGuardsStage().areFrameStatesAtDeopts()) { 398 resolveConstantSnippets.lower((InitializeKlassNode) n, tool); 399 } 400 } else if (n instanceof ProfileNode) { 401 profileSnippets.lower((ProfileNode) n, tool); 402 } else { 403 super.lower(n, tool); 404 } 405 } 406 } 407 408 private static void lowerComputeObjectAddressNode(ComputeObjectAddressNode n) { 409 /* 410 * Lower the node into a ComputeObjectAddress node and an Add but ensure that it's below any 411 * potential safepoints and above it's uses. 412 */ 413 for (Node use : n.usages().snapshot()) { 414 if (use instanceof FixedNode) { 415 FixedNode fixed = (FixedNode) use; 416 StructuredGraph graph = n.graph(); 417 GetObjectAddressNode address = graph.add(new GetObjectAddressNode(n.getObject())); 418 graph.addBeforeFixed(fixed, address); 419 AddNode add = graph.addOrUnique(new AddNode(address, n.getOffset())); 420 use.replaceFirstInput(n, add); 421 } else { 422 throw GraalError.shouldNotReachHere("Unexpected floating use of ComputeObjectAddressNode " + n); 423 } 424 } 425 GraphUtil.unlinkFixedNode(n); 426 n.safeDelete(); 427 } 428 429 private void lowerKlassLayoutHelperNode(KlassLayoutHelperNode n, LoweringTool tool) { 430 if (tool.getLoweringStage() == LoweringTool.StandardLoweringStage.HIGH_TIER) { 431 return; 432 } 433 StructuredGraph graph = n.graph(); 434 assert !n.getHub().isConstant(); 435 AddressNode address = createOffsetAddress(graph, n.getHub(), runtime.getVMConfig().klassLayoutHelperOffset); 436 n.replaceAtUsagesAndDelete(graph.unique(new FloatingReadNode(address, KLASS_LAYOUT_HELPER_LOCATION, null, n.stamp(NodeView.DEFAULT), null, BarrierType.NONE))); 437 } 438 439 private void lowerHubGetClassNode(HubGetClassNode n, LoweringTool tool) { 440 if (tool.getLoweringStage() == LoweringTool.StandardLoweringStage.HIGH_TIER) { 441 return; 442 } 443 444 ValueNode hub = n.getHub(); 445 GraalHotSpotVMConfig vmConfig = runtime.getVMConfig(); 446 StructuredGraph graph = n.graph(); 447 assert !hub.isConstant() || GraalOptions.ImmutableCode.getValue(graph.getOptions()); 448 AddressNode mirrorAddress = createOffsetAddress(graph, hub, vmConfig.classMirrorOffset); 449 FloatingReadNode read = graph.unique( 450 new FloatingReadNode(mirrorAddress, CLASS_MIRROR_LOCATION, null, vmConfig.classMirrorIsHandle ? StampFactory.forKind(target.wordJavaKind) : n.stamp(NodeView.DEFAULT), 451 null, BarrierType.NONE)); 452 if (vmConfig.classMirrorIsHandle) { 453 AddressNode address = createOffsetAddress(graph, read, 0); 454 read = graph.unique(new FloatingReadNode(address, CLASS_MIRROR_HANDLE_LOCATION, null, n.stamp(NodeView.DEFAULT), null, BarrierType.NONE)); 455 } 456 n.replaceAtUsagesAndDelete(read); 457 } 458 459 private void lowerClassGetHubNode(ClassGetHubNode n, LoweringTool tool) { 460 if (tool.getLoweringStage() == LoweringTool.StandardLoweringStage.HIGH_TIER) { 461 return; 462 } 463 464 StructuredGraph graph = n.graph(); 465 assert !n.getValue().isConstant(); 466 AddressNode address = createOffsetAddress(graph, n.getValue(), runtime.getVMConfig().klassOffset); 467 FloatingReadNode read = graph.unique(new FloatingReadNode(address, CLASS_KLASS_LOCATION, null, n.stamp(NodeView.DEFAULT), null, BarrierType.NONE)); 468 n.replaceAtUsagesAndDelete(read); 469 } 470 471 private void lowerInvoke(Invoke invoke, LoweringTool tool, StructuredGraph graph) { 472 if (invoke.callTarget() instanceof MethodCallTargetNode) { 473 MethodCallTargetNode callTarget = (MethodCallTargetNode) invoke.callTarget(); 474 NodeInputList<ValueNode> parameters = callTarget.arguments(); 475 ValueNode receiver = parameters.isEmpty() ? null : parameters.get(0); 476 477 if (!callTarget.isStatic()) { 478 assert receiver != null : "non-static call must have a receiver"; 479 if (receiver.stamp(NodeView.DEFAULT) instanceof ObjectStamp && !StampTool.isPointerNonNull(receiver)) { 480 ValueNode nonNullReceiver = createNullCheckedValue(receiver, invoke.asNode(), tool); 481 parameters.set(0, nonNullReceiver); 482 receiver = nonNullReceiver; 483 } 484 } 485 JavaType[] signature = callTarget.targetMethod().getSignature().toParameterTypes(callTarget.isStatic() ? null : callTarget.targetMethod().getDeclaringClass()); 486 487 LoweredCallTargetNode loweredCallTarget = null; 488 OptionValues options = graph.getOptions(); 489 if (InlineVTableStubs.getValue(options) && callTarget.invokeKind().isIndirect() && (AlwaysInlineVTableStubs.getValue(options) || invoke.isPolymorphic())) { 490 HotSpotResolvedJavaMethod hsMethod = (HotSpotResolvedJavaMethod) callTarget.targetMethod(); 491 ResolvedJavaType receiverType = invoke.getReceiverType(); 492 if (hsMethod.isInVirtualMethodTable(receiverType)) { 493 JavaKind wordKind = runtime.getTarget().wordJavaKind; 494 ValueNode hub = createReadHub(graph, receiver, tool); 495 496 ReadNode metaspaceMethod = createReadVirtualMethod(graph, hub, hsMethod, receiverType); 497 // We use LocationNode.ANY_LOCATION for the reads that access the 498 // compiled code entry as HotSpot does not guarantee they are final 499 // values. 500 int methodCompiledEntryOffset = runtime.getVMConfig().methodCompiledEntryOffset; 501 AddressNode address = createOffsetAddress(graph, metaspaceMethod, methodCompiledEntryOffset); 502 ReadNode compiledEntry = graph.add(new ReadNode(address, any(), StampFactory.forKind(wordKind), BarrierType.NONE)); 503 504 loweredCallTarget = graph.add(new HotSpotIndirectCallTargetNode(metaspaceMethod, compiledEntry, parameters.toArray(new ValueNode[parameters.size()]), callTarget.returnStamp(), 505 signature, callTarget.targetMethod(), 506 HotSpotCallingConventionType.JavaCall, callTarget.invokeKind())); 507 508 graph.addBeforeFixed(invoke.asNode(), metaspaceMethod); 509 graph.addAfterFixed(metaspaceMethod, compiledEntry); 510 } 511 } 512 513 if (loweredCallTarget == null) { 514 loweredCallTarget = graph.add(new HotSpotDirectCallTargetNode(parameters.toArray(new ValueNode[parameters.size()]), callTarget.returnStamp(), 515 signature, callTarget.targetMethod(), 516 HotSpotCallingConventionType.JavaCall, 517 callTarget.invokeKind())); 518 } 519 callTarget.replaceAndDelete(loweredCallTarget); 520 } 521 } 522 523 private CompressEncoding getOopEncoding() { 524 return runtime.getVMConfig().getOopEncoding(); 525 } 526 527 @Override 528 protected Stamp loadCompressedStamp(ObjectStamp stamp) { 529 return HotSpotNarrowOopStamp.compressed(stamp, getOopEncoding()); 530 } 531 532 @Override 533 protected ValueNode newCompressionNode(CompressionOp op, ValueNode value) { 534 return new HotSpotCompressionNode(op, value, getOopEncoding()); 535 } 536 537 @Override 538 public ValueNode staticFieldBase(StructuredGraph graph, ResolvedJavaField f) { 539 HotSpotResolvedJavaField field = (HotSpotResolvedJavaField) f; 540 JavaConstant base = constantReflection.asJavaClass(field.getDeclaringClass()); 541 return ConstantNode.forConstant(base, metaAccess, graph); 542 } 543 544 @Override 545 protected ValueNode createReadArrayComponentHub(StructuredGraph graph, ValueNode arrayHub, FixedNode anchor) { 546 /* 547 * Anchor the read of the element klass to the cfg, because it is only valid when arrayClass 548 * is an object class, which might not be the case in other parts of the compiled method. 549 */ 550 AddressNode address = createOffsetAddress(graph, arrayHub, runtime.getVMConfig().arrayClassElementOffset); 551 return graph.unique(new FloatingReadNode(address, OBJ_ARRAY_KLASS_ELEMENT_KLASS_LOCATION, null, KlassPointerStamp.klassNonNull(), AbstractBeginNode.prevBegin(anchor))); 552 } 553 554 @Override 555 protected void lowerUnsafeLoadNode(RawLoadNode load, LoweringTool tool) { 556 StructuredGraph graph = load.graph(); 557 if (!(load instanceof GuardedUnsafeLoadNode) && !graph.getGuardsStage().allowsFloatingGuards() && addReadBarrier(load)) { 558 unsafeLoadSnippets.lower(load, tool); 559 } else { 560 super.lowerUnsafeLoadNode(load, tool); 561 } 562 } 563 564 private void lowerLoadMethodNode(LoadMethodNode loadMethodNode) { 565 StructuredGraph graph = loadMethodNode.graph(); 566 HotSpotResolvedJavaMethod method = (HotSpotResolvedJavaMethod) loadMethodNode.getMethod(); 567 ReadNode metaspaceMethod = createReadVirtualMethod(graph, loadMethodNode.getHub(), method, loadMethodNode.getReceiverType()); 568 graph.replaceFixed(loadMethodNode, metaspaceMethod); 569 } 570 571 private static void lowerGetClassNode(GetClassNode getClass, LoweringTool tool, StructuredGraph graph) { 572 StampProvider stampProvider = tool.getStampProvider(); 573 LoadHubNode hub = graph.unique(new LoadHubNode(stampProvider, getClass.getObject())); 574 HubGetClassNode hubGetClass = graph.unique(new HubGetClassNode(tool.getMetaAccess(), hub)); 575 getClass.replaceAtUsagesAndDelete(hubGetClass); 576 hub.lower(tool); 577 hubGetClass.lower(tool); 578 } 579 580 private void lowerStoreHubNode(StoreHubNode storeHub, StructuredGraph graph) { 581 WriteNode hub = createWriteHub(graph, storeHub.getObject(), storeHub.getValue()); 582 graph.replaceFixed(storeHub, hub); 583 } 584 585 @Override 586 public BarrierType fieldInitializationBarrier(JavaKind entryKind) { 587 return (entryKind == JavaKind.Object && !runtime.getVMConfig().useDeferredInitBarriers) ? BarrierType.IMPRECISE : BarrierType.NONE; 588 } 589 590 @Override 591 public BarrierType arrayInitializationBarrier(JavaKind entryKind) { 592 return (entryKind == JavaKind.Object && !runtime.getVMConfig().useDeferredInitBarriers) ? BarrierType.PRECISE : BarrierType.NONE; 593 } 594 595 private void lowerOSRStartNode(OSRStartNode osrStart) { 596 StructuredGraph graph = osrStart.graph(); 597 if (graph.getGuardsStage() == StructuredGraph.GuardsStage.FIXED_DEOPTS) { 598 StartNode newStart = graph.add(new StartNode()); 599 ParameterNode buffer = graph.addWithoutUnique(new ParameterNode(0, StampPair.createSingle(StampFactory.forKind(runtime.getTarget().wordJavaKind)))); 600 ForeignCallNode migrationEnd = graph.add(new ForeignCallNode(foreignCalls, OSR_MIGRATION_END, buffer)); 601 migrationEnd.setStateAfter(osrStart.stateAfter()); 602 newStart.setNext(migrationEnd); 603 FixedNode next = osrStart.next(); 604 osrStart.setNext(null); 605 migrationEnd.setNext(next); 606 graph.setStart(newStart); 607 608 final int wordSize = target.wordSize; 609 610 // @formatter:off 611 // taken from c2 locals_addr = osr_buf + (max_locals-1)*wordSize) 612 // @formatter:on 613 int localsOffset = (graph.method().getMaxLocals() - 1) * wordSize; 614 for (OSRLocalNode osrLocal : graph.getNodes(OSRLocalNode.TYPE)) { 615 int size = osrLocal.getStackKind().getSlotCount(); 616 int offset = localsOffset - (osrLocal.index() + size - 1) * wordSize; 617 AddressNode address = createOffsetAddress(graph, buffer, offset); 618 ReadNode load = graph.add(new ReadNode(address, any(), osrLocal.stamp(NodeView.DEFAULT), BarrierType.NONE)); 619 osrLocal.replaceAndDelete(load); 620 graph.addBeforeFixed(migrationEnd, load); 621 } 622 623 // @formatter:off 624 // taken from c2 monitors_addr = osr_buf + (max_locals+mcnt*2-1)*wordSize); 625 // @formatter:on 626 final int lockCount = osrStart.stateAfter().locksSize(); 627 final int locksOffset = (graph.method().getMaxLocals() + lockCount * 2 - 1) * wordSize; 628 629 // first initialize the lock slots for all enters with the displaced marks read from the 630 // buffer 631 for (OSRMonitorEnterNode osrMonitorEnter : graph.getNodes(OSRMonitorEnterNode.TYPE)) { 632 MonitorIdNode monitorID = osrMonitorEnter.getMonitorId(); 633 OSRLockNode lock = (OSRLockNode) osrMonitorEnter.object(); 634 final int index = lock.index(); 635 636 final int offsetDisplacedHeader = locksOffset - ((index * 2) + 1) * wordSize; 637 final int offsetLockObject = locksOffset - index * 2 * wordSize; 638 639 // load the displaced mark from the osr buffer 640 AddressNode addressDisplacedHeader = createOffsetAddress(graph, buffer, offsetDisplacedHeader); 641 ReadNode loadDisplacedHeader = graph.add(new ReadNode(addressDisplacedHeader, any(), lock.stamp(NodeView.DEFAULT), BarrierType.NONE)); 642 graph.addBeforeFixed(migrationEnd, loadDisplacedHeader); 643 644 // we need to initialize the stack slot for the lock 645 BeginLockScopeNode beginLockScope = graph.add(new BeginLockScopeNode(lock.getStackKind(), monitorID.getLockDepth())); 646 graph.addBeforeFixed(migrationEnd, beginLockScope); 647 648 // write the displaced mark to the correct stack slot 649 AddressNode addressDisplacedMark = createOffsetAddress(graph, beginLockScope, runtime.getVMConfig().basicLockDisplacedHeaderOffset); 650 WriteNode writeStackSlot = graph.add(new WriteNode(addressDisplacedMark, DISPLACED_MARK_WORD_LOCATION, loadDisplacedHeader, BarrierType.NONE)); 651 graph.addBeforeFixed(migrationEnd, writeStackSlot); 652 653 // load the lock object from the osr buffer 654 AddressNode addressLockObject = createOffsetAddress(graph, buffer, offsetLockObject); 655 ReadNode loadObject = graph.add(new ReadNode(addressLockObject, any(), lock.stamp(NodeView.DEFAULT), BarrierType.NONE)); 656 lock.replaceAndDelete(loadObject); 657 graph.addBeforeFixed(migrationEnd, loadObject); 658 } 659 660 osrStart.replaceAtUsagesAndDelete(newStart); 661 } 662 } 663 664 static final class Exceptions { 665 protected static final EnumMap<BytecodeExceptionKind, RuntimeException> cachedExceptions; 666 667 static { 668 cachedExceptions = new EnumMap<>(BytecodeExceptionKind.class); 669 cachedExceptions.put(BytecodeExceptionKind.NULL_POINTER, clearStackTrace(new NullPointerException())); 670 cachedExceptions.put(BytecodeExceptionKind.OUT_OF_BOUNDS, clearStackTrace(new ArrayIndexOutOfBoundsException())); 671 cachedExceptions.put(BytecodeExceptionKind.CLASS_CAST, clearStackTrace(new ClassCastException())); 672 cachedExceptions.put(BytecodeExceptionKind.ARRAY_STORE, clearStackTrace(new ArrayStoreException())); 673 cachedExceptions.put(BytecodeExceptionKind.DIVISION_BY_ZERO, clearStackTrace(new ArithmeticException())); 674 } 675 676 private static RuntimeException clearStackTrace(RuntimeException ex) { 677 ex.setStackTrace(new StackTraceElement[0]); 678 return ex; 679 } 680 } 681 682 public static final class RuntimeCalls { 683 public static final EnumMap<BytecodeExceptionKind, ForeignCallDescriptor> runtimeCalls; 684 685 static { 686 runtimeCalls = new EnumMap<>(BytecodeExceptionKind.class); 687 runtimeCalls.put(BytecodeExceptionKind.ARRAY_STORE, new ForeignCallDescriptor("createArrayStoreException", ArrayStoreException.class, Object.class)); 688 runtimeCalls.put(BytecodeExceptionKind.CLASS_CAST, new ForeignCallDescriptor("createClassCastException", ClassCastException.class, Object.class, KlassPointer.class)); 689 runtimeCalls.put(BytecodeExceptionKind.NULL_POINTER, new ForeignCallDescriptor("createNullPointerException", NullPointerException.class)); 690 runtimeCalls.put(BytecodeExceptionKind.OUT_OF_BOUNDS, new ForeignCallDescriptor("createOutOfBoundsException", ArrayIndexOutOfBoundsException.class, int.class, int.class)); 691 runtimeCalls.put(BytecodeExceptionKind.DIVISION_BY_ZERO, new ForeignCallDescriptor("createDivisionByZeroException", ArithmeticException.class)); 692 runtimeCalls.put(BytecodeExceptionKind.INTEGER_EXACT_OVERFLOW, new ForeignCallDescriptor("createIntegerExactOverflowException", ArithmeticException.class)); 693 runtimeCalls.put(BytecodeExceptionKind.LONG_EXACT_OVERFLOW, new ForeignCallDescriptor("createLongExactOverflowException", ArithmeticException.class)); 694 } 695 } 696 697 private void throwCachedException(BytecodeExceptionNode node) { 698 if (IS_IN_NATIVE_IMAGE) { 699 throw new InternalError("Can't throw exception from SVM object"); 700 } 701 Throwable exception = Exceptions.cachedExceptions.get(node.getExceptionKind()); 702 assert exception != null; 703 704 StructuredGraph graph = node.graph(); 705 FloatingNode exceptionNode = ConstantNode.forConstant(constantReflection.forObject(exception), metaAccess, graph); 706 graph.replaceFixedWithFloating(node, exceptionNode); 707 } 708 709 private void lowerBytecodeExceptionNode(BytecodeExceptionNode node) { 710 if (OmitHotExceptionStacktrace.getValue(node.getOptions())) { 711 throwCachedException(node); 712 return; 713 } 714 715 ForeignCallDescriptor descriptor = RuntimeCalls.runtimeCalls.get(node.getExceptionKind()); 716 assert descriptor != null; 717 718 StructuredGraph graph = node.graph(); 719 ForeignCallNode foreignCallNode = graph.add(new ForeignCallNode(foreignCalls, descriptor, node.stamp(NodeView.DEFAULT), node.getArguments())); 720 graph.replaceFixedWithFixed(node, foreignCallNode); 721 } 722 723 private boolean addReadBarrier(RawLoadNode load) { 724 if (runtime.getVMConfig().useG1GC && load.graph().getGuardsStage() == StructuredGraph.GuardsStage.FIXED_DEOPTS && load.object().getStackKind() == JavaKind.Object && 725 load.accessKind() == JavaKind.Object && !StampTool.isPointerAlwaysNull(load.object())) { 726 ResolvedJavaType type = StampTool.typeOrNull(load.object()); 727 if (type != null && !type.isArray()) { 728 return true; 729 } 730 } 731 return false; 732 } 733 734 private ReadNode createReadVirtualMethod(StructuredGraph graph, ValueNode hub, HotSpotResolvedJavaMethod method, ResolvedJavaType receiverType) { 735 return createReadVirtualMethod(graph, hub, method.vtableEntryOffset(receiverType)); 736 } 737 738 private ReadNode createReadVirtualMethod(StructuredGraph graph, ValueNode hub, int vtableEntryOffset) { 739 assert vtableEntryOffset > 0; 740 // We use LocationNode.ANY_LOCATION for the reads that access the vtable 741 // entry as HotSpot does not guarantee that this is a final value. 742 Stamp methodStamp = MethodPointerStamp.methodNonNull(); 743 AddressNode address = createOffsetAddress(graph, hub, vtableEntryOffset); 744 ReadNode metaspaceMethod = graph.add(new ReadNode(address, any(), methodStamp, BarrierType.NONE)); 745 return metaspaceMethod; 746 } 747 748 @Override 749 protected ValueNode createReadHub(StructuredGraph graph, ValueNode object, LoweringTool tool) { 750 if (tool.getLoweringStage() != LoweringTool.StandardLoweringStage.LOW_TIER) { 751 return graph.unique(new LoadHubNode(tool.getStampProvider(), object)); 752 } 753 assert !object.isConstant() || object.isNullConstant(); 754 755 KlassPointerStamp hubStamp = KlassPointerStamp.klassNonNull(); 756 if (runtime.getVMConfig().useCompressedClassPointers) { 757 hubStamp = hubStamp.compressed(runtime.getVMConfig().getKlassEncoding()); 758 } 759 760 AddressNode address = createOffsetAddress(graph, object, runtime.getVMConfig().hubOffset); 761 LocationIdentity hubLocation = runtime.getVMConfig().useCompressedClassPointers ? COMPRESSED_HUB_LOCATION : HUB_LOCATION; 762 FloatingReadNode memoryRead = graph.unique(new FloatingReadNode(address, hubLocation, null, hubStamp, null, BarrierType.NONE)); 763 if (runtime.getVMConfig().useCompressedClassPointers) { 764 return HotSpotCompressionNode.uncompress(memoryRead, runtime.getVMConfig().getKlassEncoding()); 765 } else { 766 return memoryRead; 767 } 768 } 769 770 private WriteNode createWriteHub(StructuredGraph graph, ValueNode object, ValueNode value) { 771 assert !object.isConstant() || object.asConstant().isDefaultForKind(); 772 773 ValueNode writeValue = value; 774 if (runtime.getVMConfig().useCompressedClassPointers) { 775 writeValue = HotSpotCompressionNode.compress(value, runtime.getVMConfig().getKlassEncoding()); 776 } 777 778 AddressNode address = createOffsetAddress(graph, object, runtime.getVMConfig().hubOffset); 779 return graph.add(new WriteNode(address, HUB_WRITE_LOCATION, writeValue, BarrierType.NONE)); 780 } 781 782 @Override 783 protected BarrierType fieldLoadBarrierType(ResolvedJavaField f) { 784 HotSpotResolvedJavaField loadField = (HotSpotResolvedJavaField) f; 785 BarrierType barrierType = BarrierType.NONE; 786 if (runtime.getVMConfig().useG1GC && loadField.getJavaKind() == JavaKind.Object && metaAccess.lookupJavaType(Reference.class).equals(loadField.getDeclaringClass()) && 787 loadField.getName().equals("referent")) { 788 barrierType = BarrierType.PRECISE; 789 } 790 return barrierType; 791 } 792 793 @Override 794 public int fieldOffset(ResolvedJavaField f) { 795 return f.getOffset(); 796 } 797 798 @Override 799 public int arrayLengthOffset() { 800 return runtime.getVMConfig().arrayOopDescLengthOffset(); 801 } 802 803 @Override 804 protected final JavaKind getStorageKind(ResolvedJavaField field) { 805 return field.getJavaKind(); 806 } 807 808 @Override 809 public ObjectCloneSnippets.Templates getObjectCloneSnippets() { 810 return objectCloneSnippets; 811 } 812 813 @Override 814 public ForeignCallSnippets.Templates getForeignCallSnippets() { 815 return foreignCallSnippets; 816 } 817 }