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 */ 23 24 25 package org.graalvm.compiler.replacements; 26 27 import static org.graalvm.compiler.debug.GraalError.unimplemented; 28 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_IGNORED; 29 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_IGNORED; 30 31 import java.net.URI; 32 import java.util.ArrayList; 33 import java.util.Arrays; 34 import java.util.Formatter; 35 import java.util.HashMap; 36 import java.util.List; 37 import java.util.Map; 38 39 import jdk.internal.vm.compiler.collections.EconomicMap; 40 import jdk.internal.vm.compiler.collections.Equivalence; 41 import org.graalvm.compiler.api.replacements.Fold; 42 import org.graalvm.compiler.bytecode.Bytecode; 43 import org.graalvm.compiler.bytecode.BytecodeProvider; 44 import org.graalvm.compiler.bytecode.ResolvedJavaMethodBytecode; 45 import org.graalvm.compiler.core.common.PermanentBailoutException; 46 import org.graalvm.compiler.core.common.cfg.CFGVerifier; 47 import org.graalvm.compiler.core.common.spi.ConstantFieldProvider; 48 import org.graalvm.compiler.core.common.type.Stamp; 49 import org.graalvm.compiler.core.common.type.StampFactory; 50 import org.graalvm.compiler.core.common.type.StampPair; 51 import org.graalvm.compiler.debug.DebugCloseable; 52 import org.graalvm.compiler.debug.DebugContext; 53 import org.graalvm.compiler.debug.GraalError; 54 import org.graalvm.compiler.graph.Node; 55 import org.graalvm.compiler.graph.Node.NodeIntrinsic; 56 import org.graalvm.compiler.graph.NodeClass; 57 import org.graalvm.compiler.graph.NodeSourcePosition; 58 import org.graalvm.compiler.graph.SourceLanguagePosition; 59 import org.graalvm.compiler.graph.SourceLanguagePositionProvider; 60 import org.graalvm.compiler.graph.spi.Canonicalizable; 61 import org.graalvm.compiler.java.GraphBuilderPhase; 62 import org.graalvm.compiler.nodeinfo.NodeInfo; 63 import org.graalvm.compiler.nodes.AbstractBeginNode; 64 import org.graalvm.compiler.nodes.AbstractMergeNode; 65 import org.graalvm.compiler.nodes.CallTargetNode; 66 import org.graalvm.compiler.nodes.CallTargetNode.InvokeKind; 67 import org.graalvm.compiler.nodes.ControlSinkNode; 68 import org.graalvm.compiler.nodes.DeoptimizeNode; 69 import org.graalvm.compiler.nodes.EncodedGraph; 70 import org.graalvm.compiler.nodes.FixedNode; 71 import org.graalvm.compiler.nodes.FixedWithNextNode; 72 import org.graalvm.compiler.nodes.FrameState; 73 import org.graalvm.compiler.nodes.IfNode; 74 import org.graalvm.compiler.nodes.Invoke; 75 import org.graalvm.compiler.nodes.InvokeWithExceptionNode; 76 import org.graalvm.compiler.nodes.MergeNode; 77 import org.graalvm.compiler.nodes.NodeView; 78 import org.graalvm.compiler.nodes.ParameterNode; 79 import org.graalvm.compiler.nodes.ReturnNode; 80 import org.graalvm.compiler.nodes.SimplifyingGraphDecoder; 81 import org.graalvm.compiler.nodes.StateSplit; 82 import org.graalvm.compiler.nodes.StructuredGraph; 83 import org.graalvm.compiler.nodes.UnwindNode; 84 import org.graalvm.compiler.nodes.ValueNode; 85 import org.graalvm.compiler.nodes.cfg.ControlFlowGraph; 86 import org.graalvm.compiler.nodes.extended.ForeignCallNode; 87 import org.graalvm.compiler.nodes.extended.IntegerSwitchNode; 88 import org.graalvm.compiler.nodes.graphbuilderconf.GeneratedInvocationPlugin; 89 import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderContext; 90 import org.graalvm.compiler.nodes.graphbuilderconf.InlineInvokePlugin; 91 import org.graalvm.compiler.nodes.graphbuilderconf.InlineInvokePlugin.InlineInfo; 92 import org.graalvm.compiler.nodes.graphbuilderconf.IntrinsicContext; 93 import org.graalvm.compiler.nodes.graphbuilderconf.InvocationPlugin; 94 import org.graalvm.compiler.nodes.graphbuilderconf.InvocationPlugins; 95 import org.graalvm.compiler.nodes.graphbuilderconf.InvocationPlugins.InvocationPluginReceiver; 96 import org.graalvm.compiler.nodes.graphbuilderconf.LoopExplosionPlugin; 97 import org.graalvm.compiler.nodes.graphbuilderconf.LoopExplosionPlugin.LoopExplosionKind; 98 import org.graalvm.compiler.nodes.graphbuilderconf.NodePlugin; 99 import org.graalvm.compiler.nodes.graphbuilderconf.ParameterPlugin; 100 import org.graalvm.compiler.nodes.java.LoadFieldNode; 101 import org.graalvm.compiler.nodes.java.LoadIndexedNode; 102 import org.graalvm.compiler.nodes.java.MethodCallTargetNode; 103 import org.graalvm.compiler.nodes.java.MonitorIdNode; 104 import org.graalvm.compiler.nodes.java.NewArrayNode; 105 import org.graalvm.compiler.nodes.java.NewInstanceNode; 106 import org.graalvm.compiler.nodes.java.NewMultiArrayNode; 107 import org.graalvm.compiler.nodes.java.StoreFieldNode; 108 import org.graalvm.compiler.nodes.java.StoreIndexedNode; 109 import org.graalvm.compiler.nodes.spi.StampProvider; 110 import org.graalvm.compiler.nodes.type.StampTool; 111 import org.graalvm.compiler.nodes.util.GraphUtil; 112 import org.graalvm.compiler.options.Option; 113 import org.graalvm.compiler.options.OptionKey; 114 import org.graalvm.compiler.options.OptionType; 115 import org.graalvm.compiler.options.OptionValues; 116 import org.graalvm.compiler.phases.common.inlining.InliningUtil; 117 118 import jdk.vm.ci.code.Architecture; 119 import jdk.vm.ci.code.BailoutException; 120 import jdk.vm.ci.code.BytecodeFrame; 121 import jdk.vm.ci.meta.Assumptions; 122 import jdk.vm.ci.meta.ConstantReflectionProvider; 123 import jdk.vm.ci.meta.DeoptimizationAction; 124 import jdk.vm.ci.meta.DeoptimizationReason; 125 import jdk.vm.ci.meta.JavaConstant; 126 import jdk.vm.ci.meta.JavaKind; 127 import jdk.vm.ci.meta.JavaType; 128 import jdk.vm.ci.meta.MetaAccessProvider; 129 import jdk.vm.ci.meta.ResolvedJavaField; 130 import jdk.vm.ci.meta.ResolvedJavaMethod; 131 import jdk.vm.ci.meta.ResolvedJavaType; 132 133 /** 134 * A graph decoder that performs partial evaluation, i.e., that performs method inlining and 135 * canonicalization/simplification of nodes during decoding. 136 * 137 * Inlining and loop explosion are configured via the plugin mechanism also used by the 138 * {@link GraphBuilderPhase}. However, not all callback methods defined in 139 * {@link GraphBuilderContext} are available since decoding is more limited than graph building. 140 * 141 * The standard {@link Canonicalizable#canonical node canonicalization} interface is used to 142 * canonicalize nodes during decoding. Additionally, {@link IfNode branches} and 143 * {@link IntegerSwitchNode switches} with constant conditions are simplified. 144 */ 145 public abstract class PEGraphDecoder extends SimplifyingGraphDecoder { 146 147 private static final Object CACHED_NULL_VALUE = new Object(); 148 149 public static class Options { 150 @Option(help = "Maximum inlining depth during partial evaluation before reporting an infinite recursion")// 151 public static final OptionKey<Integer> InliningDepthError = new OptionKey<>(1000); 152 153 @Option(help = "Max number of loop explosions per method.", type = OptionType.Debug)// 154 public static final OptionKey<Integer> MaximumLoopExplosionCount = new OptionKey<>(10000); 155 156 @Option(help = "Do not bail out but throw an exception on failed loop explosion.", type = OptionType.Debug)// 157 public static final OptionKey<Boolean> FailedLoopExplosionIsFatal = new OptionKey<>(false); 158 } 159 160 protected class PEMethodScope extends MethodScope { 161 /** The state of the caller method. Only non-null during method inlining. */ 162 protected final PEMethodScope caller; 163 protected final ResolvedJavaMethod method; 164 protected final InvokeData invokeData; 165 protected final int inliningDepth; 166 167 protected final ValueNode[] arguments; 168 private SourceLanguagePosition sourceLanguagePosition = UnresolvedSourceLanguagePosition.INSTANCE; 169 170 protected FrameState outerState; 171 protected FrameState exceptionState; 172 protected ExceptionPlaceholderNode exceptionPlaceholderNode; 173 protected NodeSourcePosition callerBytecodePosition; 174 175 protected PEMethodScope(StructuredGraph targetGraph, PEMethodScope caller, LoopScope callerLoopScope, EncodedGraph encodedGraph, ResolvedJavaMethod method, InvokeData invokeData, 176 int inliningDepth, LoopExplosionPlugin loopExplosionPlugin, ValueNode[] arguments) { 177 super(callerLoopScope, targetGraph, encodedGraph, loopExplosionKind(method, loopExplosionPlugin)); 178 179 this.caller = caller; 180 this.method = method; 181 this.invokeData = invokeData; 182 this.inliningDepth = inliningDepth; 183 this.arguments = arguments; 184 } 185 186 @Override 187 public boolean isInlinedMethod() { 188 return caller != null; 189 } 190 191 @Override 192 public NodeSourcePosition getCallerBytecodePosition(NodeSourcePosition position) { 193 if (caller == null) { 194 return position; 195 } 196 if (callerBytecodePosition == null) { 197 NodeSourcePosition invokePosition = invokeData.invoke.asNode().getNodeSourcePosition(); 198 if (invokePosition == null) { 199 assert position == null : "should only happen when tracking is disabled"; 200 return null; 201 } 202 callerBytecodePosition = invokePosition; 203 } 204 if (position != null) { 205 return position.addCaller(caller.resolveSourceLanguagePosition(), callerBytecodePosition); 206 } 207 final SourceLanguagePosition pos = caller.resolveSourceLanguagePosition(); 208 if (pos != null && callerBytecodePosition != null) { 209 return new NodeSourcePosition(pos, callerBytecodePosition.getCaller(), callerBytecodePosition.getMethod(), callerBytecodePosition.getBCI()); 210 } 211 return callerBytecodePosition; 212 } 213 214 private SourceLanguagePosition resolveSourceLanguagePosition() { 215 SourceLanguagePosition res = sourceLanguagePosition; 216 if (res == UnresolvedSourceLanguagePosition.INSTANCE) { 217 res = null; 218 if (arguments != null && method.hasReceiver() && arguments.length > 0 && arguments[0].isJavaConstant()) { 219 JavaConstant constantArgument = arguments[0].asJavaConstant(); 220 res = sourceLanguagePositionProvider.getPosition(constantArgument); 221 } 222 sourceLanguagePosition = res; 223 } 224 return res; 225 } 226 } 227 228 private static final class UnresolvedSourceLanguagePosition implements SourceLanguagePosition { 229 static final SourceLanguagePosition INSTANCE = new UnresolvedSourceLanguagePosition(); 230 231 @Override 232 public String toShortString() { 233 throw new IllegalStateException(getClass().getSimpleName() + " should not be reachable."); 234 } 235 236 @Override 237 public int getOffsetEnd() { 238 throw new IllegalStateException(getClass().getSimpleName() + " should not be reachable."); 239 } 240 241 @Override 242 public int getOffsetStart() { 243 throw new IllegalStateException(getClass().getSimpleName() + " should not be reachable."); 244 } 245 246 @Override 247 public int getLineNumber() { 248 throw new IllegalStateException(getClass().getSimpleName() + " should not be reachable."); 249 } 250 251 @Override 252 public URI getURI() { 253 throw new IllegalStateException(getClass().getSimpleName() + " should not be reachable."); 254 } 255 256 @Override 257 public String getLanguage() { 258 throw new IllegalStateException(getClass().getSimpleName() + " should not be reachable."); 259 } 260 } 261 262 protected class PENonAppendGraphBuilderContext implements GraphBuilderContext { 263 protected final PEMethodScope methodScope; 264 protected final Invoke invoke; 265 266 @Override 267 public ExternalInliningContext getExternalInliningContext() { 268 return new ExternalInliningContext() { 269 @Override 270 public int getInlinedDepth() { 271 int count = 0; 272 PEGraphDecoder.PEMethodScope scope = methodScope; 273 while (scope != null) { 274 if (scope.method.equals(callInlinedMethod)) { 275 count++; 276 } 277 scope = scope.caller; 278 } 279 return count; 280 } 281 }; 282 } 283 284 public PENonAppendGraphBuilderContext(PEMethodScope methodScope, Invoke invoke) { 285 this.methodScope = methodScope; 286 this.invoke = invoke; 287 } 288 289 /** 290 * {@link Fold} and {@link NodeIntrinsic} can be deferred during parsing/decoding. Only by 291 * the end of {@linkplain SnippetTemplate#instantiate Snippet instantiation} do they need to 292 * have been processed. 293 * 294 * This is how SVM handles snippets. They are parsed with plugins disabled and then encoded 295 * and stored in the image. When the snippet is needed at runtime the graph is decoded and 296 * the plugins are run during the decoding process. If they aren't handled at this point 297 * then they will never be handled. 298 */ 299 @Override 300 public boolean canDeferPlugin(GeneratedInvocationPlugin plugin) { 301 return plugin.getSource().equals(Fold.class) || plugin.getSource().equals(Node.NodeIntrinsic.class); 302 } 303 304 @Override 305 public BailoutException bailout(String string) { 306 BailoutException bailout = new PermanentBailoutException(string); 307 throw GraphUtil.createBailoutException(string, bailout, GraphUtil.approxSourceStackTraceElement(methodScope.getCallerBytecodePosition())); 308 } 309 310 @Override 311 public StampProvider getStampProvider() { 312 return stampProvider; 313 } 314 315 @Override 316 public MetaAccessProvider getMetaAccess() { 317 return metaAccess; 318 } 319 320 @Override 321 public ConstantReflectionProvider getConstantReflection() { 322 return constantReflection; 323 } 324 325 @Override 326 public ConstantFieldProvider getConstantFieldProvider() { 327 return constantFieldProvider; 328 } 329 330 @Override 331 public StructuredGraph getGraph() { 332 return graph; 333 } 334 335 @Override 336 public int getDepth() { 337 return methodScope.inliningDepth; 338 } 339 340 @Override 341 public IntrinsicContext getIntrinsic() { 342 return null; 343 } 344 345 @Override 346 public <T extends ValueNode> T append(T value) { 347 throw unimplemented(); 348 } 349 350 @Override 351 public void push(JavaKind kind, ValueNode value) { 352 throw unimplemented(); 353 } 354 355 @Override 356 public void handleReplacedInvoke(InvokeKind invokeKind, ResolvedJavaMethod targetMethod, ValueNode[] args, boolean inlineEverything) { 357 throw unimplemented(); 358 } 359 360 @Override 361 public void handleReplacedInvoke(CallTargetNode callTarget, JavaKind resultType) { 362 throw unimplemented(); 363 } 364 365 @Override 366 public boolean intrinsify(BytecodeProvider bytecodeProvider, ResolvedJavaMethod targetMethod, ResolvedJavaMethod substitute, InvocationPlugin.Receiver receiver, ValueNode[] args) { 367 return false; 368 } 369 370 @Override 371 public void setStateAfter(StateSplit stateSplit) { 372 throw unimplemented(); 373 } 374 375 @Override 376 public GraphBuilderContext getParent() { 377 throw unimplemented(); 378 } 379 380 @Override 381 public Bytecode getCode() { 382 throw unimplemented(); 383 } 384 385 @Override 386 public ResolvedJavaMethod getMethod() { 387 throw unimplemented(); 388 } 389 390 @Override 391 public int bci() { 392 return invoke.bci(); 393 } 394 395 @Override 396 public InvokeKind getInvokeKind() { 397 throw unimplemented(); 398 } 399 400 @Override 401 public JavaType getInvokeReturnType() { 402 throw unimplemented(); 403 } 404 405 @Override 406 public String toString() { 407 Formatter fmt = new Formatter(); 408 PEMethodScope scope = this.methodScope; 409 fmt.format("%s", new ResolvedJavaMethodBytecode(scope.method).asStackTraceElement(invoke.bci())); 410 NodeSourcePosition callers = scope.getCallerBytecodePosition(); 411 if (callers != null) { 412 fmt.format("%n%s", callers); 413 } 414 return fmt.toString(); 415 } 416 } 417 418 protected class PEAppendGraphBuilderContext extends PENonAppendGraphBuilderContext { 419 protected FixedWithNextNode lastInstr; 420 protected ValueNode pushedNode; 421 protected boolean invokeConsumed; 422 423 public PEAppendGraphBuilderContext(PEMethodScope inlineScope, FixedWithNextNode lastInstr) { 424 super(inlineScope, inlineScope.invokeData != null ? inlineScope.invokeData.invoke : null); 425 this.lastInstr = lastInstr; 426 } 427 428 @Override 429 public void push(JavaKind kind, ValueNode value) { 430 if (pushedNode != null) { 431 throw unimplemented("Only one push is supported"); 432 } 433 pushedNode = value; 434 } 435 436 @Override 437 public void setStateAfter(StateSplit stateSplit) { 438 Node stateAfter = decodeFloatingNode(methodScope.caller, methodScope.callerLoopScope, methodScope.invokeData.stateAfterOrderId); 439 getGraph().add(stateAfter); 440 FrameState fs = (FrameState) handleFloatingNodeAfterAdd(methodScope.caller, methodScope.callerLoopScope, stateAfter); 441 stateSplit.setStateAfter(fs); 442 } 443 444 @SuppressWarnings("try") 445 @Override 446 public <T extends ValueNode> T append(T v) { 447 if (v.graph() != null) { 448 return v; 449 } 450 try (DebugCloseable position = withNodeSoucePosition()) { 451 T added = getGraph().addOrUniqueWithInputs(v); 452 if (added == v) { 453 updateLastInstruction(v); 454 } 455 return added; 456 } 457 } 458 459 private DebugCloseable withNodeSoucePosition() { 460 if (getGraph().trackNodeSourcePosition()) { 461 NodeSourcePosition callerBytecodePosition = methodScope.getCallerBytecodePosition(); 462 if (callerBytecodePosition != null) { 463 return getGraph().withNodeSourcePosition(callerBytecodePosition); 464 } 465 } 466 return null; 467 } 468 469 private <T extends ValueNode> void updateLastInstruction(T v) { 470 if (v instanceof FixedNode) { 471 FixedNode fixedNode = (FixedNode) v; 472 if (lastInstr != null) { 473 lastInstr.setNext(fixedNode); 474 } 475 if (fixedNode instanceof FixedWithNextNode) { 476 FixedWithNextNode fixedWithNextNode = (FixedWithNextNode) fixedNode; 477 assert fixedWithNextNode.next() == null : "cannot append instruction to instruction which isn't end"; 478 lastInstr = fixedWithNextNode; 479 } else { 480 lastInstr = null; 481 } 482 } 483 } 484 485 @Override 486 public void handleReplacedInvoke(CallTargetNode callTarget, JavaKind resultType) { 487 if (invokeConsumed) { 488 throw unimplemented("handleReplacedInvoke can be called only once"); 489 } 490 invokeConsumed = true; 491 492 appendInvoke(methodScope.caller, methodScope.callerLoopScope, methodScope.invokeData, callTarget); 493 updateLastInstruction(invoke.asNode()); 494 } 495 } 496 497 @NodeInfo(cycles = CYCLES_IGNORED, size = SIZE_IGNORED) 498 static class ExceptionPlaceholderNode extends ValueNode { 499 public static final NodeClass<ExceptionPlaceholderNode> TYPE = NodeClass.create(ExceptionPlaceholderNode.class); 500 501 protected ExceptionPlaceholderNode() { 502 super(TYPE, StampFactory.object()); 503 } 504 } 505 506 protected static class SpecialCallTargetCacheKey { 507 private final InvokeKind invokeKind; 508 private final ResolvedJavaMethod targetMethod; 509 private final ResolvedJavaType contextType; 510 private final Stamp receiverStamp; 511 512 public SpecialCallTargetCacheKey(InvokeKind invokeKind, ResolvedJavaMethod targetMethod, ResolvedJavaType contextType, Stamp receiverStamp) { 513 this.invokeKind = invokeKind; 514 this.targetMethod = targetMethod; 515 this.contextType = contextType; 516 this.receiverStamp = receiverStamp; 517 } 518 519 @Override 520 public int hashCode() { 521 return invokeKind.hashCode() ^ targetMethod.hashCode() ^ contextType.hashCode() ^ receiverStamp.hashCode(); 522 } 523 524 @Override 525 public boolean equals(Object obj) { 526 if (obj instanceof SpecialCallTargetCacheKey) { 527 SpecialCallTargetCacheKey key = (SpecialCallTargetCacheKey) obj; 528 return key.invokeKind.equals(this.invokeKind) && key.targetMethod.equals(this.targetMethod) && key.contextType.equals(this.contextType) && key.receiverStamp.equals(this.receiverStamp); 529 } 530 return false; 531 } 532 } 533 534 private final LoopExplosionPlugin loopExplosionPlugin; 535 private final InvocationPlugins invocationPlugins; 536 private final InlineInvokePlugin[] inlineInvokePlugins; 537 private final ParameterPlugin parameterPlugin; 538 private final NodePlugin[] nodePlugins; 539 private final EconomicMap<SpecialCallTargetCacheKey, Object> specialCallTargetCache; 540 private final EconomicMap<ResolvedJavaMethod, Object> invocationPluginCache; 541 private final ResolvedJavaMethod callInlinedMethod; 542 protected final SourceLanguagePositionProvider sourceLanguagePositionProvider; 543 544 public PEGraphDecoder(Architecture architecture, StructuredGraph graph, MetaAccessProvider metaAccess, ConstantReflectionProvider constantReflection, ConstantFieldProvider constantFieldProvider, 545 StampProvider stampProvider, LoopExplosionPlugin loopExplosionPlugin, InvocationPlugins invocationPlugins, InlineInvokePlugin[] inlineInvokePlugins, 546 ParameterPlugin parameterPlugin, 547 NodePlugin[] nodePlugins, ResolvedJavaMethod callInlinedMethod, SourceLanguagePositionProvider sourceLanguagePositionProvider) { 548 super(architecture, graph, metaAccess, constantReflection, constantFieldProvider, stampProvider, true); 549 this.loopExplosionPlugin = loopExplosionPlugin; 550 this.invocationPlugins = invocationPlugins; 551 this.inlineInvokePlugins = inlineInvokePlugins; 552 this.parameterPlugin = parameterPlugin; 553 this.nodePlugins = nodePlugins; 554 this.specialCallTargetCache = EconomicMap.create(Equivalence.DEFAULT); 555 this.invocationPluginCache = EconomicMap.create(Equivalence.DEFAULT); 556 this.callInlinedMethod = callInlinedMethod; 557 this.sourceLanguagePositionProvider = sourceLanguagePositionProvider; 558 } 559 560 protected static LoopExplosionKind loopExplosionKind(ResolvedJavaMethod method, LoopExplosionPlugin loopExplosionPlugin) { 561 if (loopExplosionPlugin == null) { 562 return LoopExplosionKind.NONE; 563 } else { 564 return loopExplosionPlugin.loopExplosionKind(method); 565 } 566 } 567 568 public void decode(ResolvedJavaMethod method, boolean isSubstitution, boolean trackNodeSourcePosition) { 569 PEMethodScope methodScope = new PEMethodScope(graph, null, null, lookupEncodedGraph(method, null, null, isSubstitution, trackNodeSourcePosition), method, null, 0, loopExplosionPlugin, null); 570 decode(createInitialLoopScope(methodScope, null)); 571 cleanupGraph(methodScope); 572 573 debug.dump(DebugContext.VERBOSE_LEVEL, graph, "After graph cleanup"); 574 assert graph.verify(); 575 576 try { 577 /* Check that the control flow graph can be computed, to catch problems early. */ 578 assert CFGVerifier.verify(ControlFlowGraph.compute(graph, true, true, true, true)); 579 } catch (Throwable ex) { 580 throw GraalError.shouldNotReachHere("Control flow graph not valid after partial evaluation"); 581 } 582 } 583 584 @Override 585 protected void cleanupGraph(MethodScope methodScope) { 586 super.cleanupGraph(methodScope); 587 588 for (FrameState frameState : graph.getNodes(FrameState.TYPE)) { 589 if (frameState.bci == BytecodeFrame.UNWIND_BCI) { 590 /* 591 * handleMissingAfterExceptionFrameState is called during graph decoding from 592 * InliningUtil.processFrameState - but during graph decoding it does not do 593 * anything because the usages of the frameState are not available yet. So we need 594 * to call it again. 595 */ 596 PEMethodScope peMethodScope = (PEMethodScope) methodScope; 597 Invoke invoke = peMethodScope.invokeData != null ? peMethodScope.invokeData.invoke : null; 598 InliningUtil.handleMissingAfterExceptionFrameState(frameState, invoke, null, true); 599 600 /* 601 * The frameState must be gone now, because it is not a valid deoptimization point. 602 */ 603 assert frameState.isDeleted(); 604 } 605 } 606 } 607 608 @Override 609 protected void checkLoopExplosionIteration(MethodScope s, LoopScope loopScope) { 610 PEMethodScope methodScope = (PEMethodScope) s; 611 612 if (loopScope.loopIteration > Options.MaximumLoopExplosionCount.getValue(options)) { 613 throw tooManyLoopExplosionIterations(methodScope, options); 614 } 615 } 616 617 private static RuntimeException tooManyLoopExplosionIterations(PEMethodScope methodScope, OptionValues options) { 618 String message = "too many loop explosion iterations - does the explosion not terminate for method " + methodScope.method + "?"; 619 RuntimeException bailout = Options.FailedLoopExplosionIsFatal.getValue(options) ? new RuntimeException(message) : new PermanentBailoutException(message); 620 throw GraphUtil.createBailoutException(message, bailout, GraphUtil.approxSourceStackTraceElement(methodScope.getCallerBytecodePosition())); 621 } 622 623 @Override 624 protected LoopScope handleInvoke(MethodScope s, LoopScope loopScope, InvokeData invokeData) { 625 PEMethodScope methodScope = (PEMethodScope) s; 626 627 /* 628 * Decode the call target, but do not add it to the graph yet. This avoids adding usages for 629 * all the arguments, which are expensive to remove again when we can inline the method. 630 */ 631 assert invokeData.invoke.callTarget() == null : "callTarget edge is ignored during decoding of Invoke"; 632 CallTargetNode callTarget = (CallTargetNode) decodeFloatingNode(methodScope, loopScope, invokeData.callTargetOrderId); 633 if (callTarget instanceof MethodCallTargetNode) { 634 MethodCallTargetNode methodCall = (MethodCallTargetNode) callTarget; 635 if (methodCall.invokeKind().hasReceiver()) { 636 invokeData.constantReceiver = methodCall.arguments().get(0).asJavaConstant(); 637 NodeSourcePosition invokePosition = invokeData.invoke.asNode().getNodeSourcePosition(); 638 if (invokeData.constantReceiver != null && invokePosition != null) { 639 // new NodeSourcePosition(invokeData.constantReceiver, 640 // invokePosition.getCaller(), invokePosition.getMethod(), 641 // invokePosition.getBCI()); 642 } 643 } 644 LoopScope inlineLoopScope = trySimplifyInvoke(methodScope, loopScope, invokeData, (MethodCallTargetNode) callTarget); 645 if (inlineLoopScope != null) { 646 return inlineLoopScope; 647 } 648 } 649 650 /* We know that we need an invoke, so now we can add the call target to the graph. */ 651 graph.add(callTarget); 652 registerNode(loopScope, invokeData.callTargetOrderId, callTarget, false, false); 653 return super.handleInvoke(methodScope, loopScope, invokeData); 654 } 655 656 protected LoopScope trySimplifyInvoke(PEMethodScope methodScope, LoopScope loopScope, InvokeData invokeData, MethodCallTargetNode callTarget) { 657 // attempt to devirtualize the call 658 ResolvedJavaMethod specialCallTarget = getSpecialCallTarget(invokeData, callTarget); 659 if (specialCallTarget != null) { 660 callTarget.setTargetMethod(specialCallTarget); 661 callTarget.setInvokeKind(InvokeKind.Special); 662 } 663 664 if (tryInvocationPlugin(methodScope, loopScope, invokeData, callTarget)) { 665 /* 666 * The invocation plugin handled the call, so decoding continues in the calling method. 667 */ 668 return loopScope; 669 } 670 LoopScope inlineLoopScope = tryInline(methodScope, loopScope, invokeData, callTarget); 671 if (inlineLoopScope != null) { 672 /* 673 * We can inline the call, so decoding continues in the inlined method. 674 */ 675 return inlineLoopScope; 676 } 677 678 for (InlineInvokePlugin plugin : inlineInvokePlugins) { 679 plugin.notifyNotInlined(new PENonAppendGraphBuilderContext(methodScope, invokeData.invoke), callTarget.targetMethod(), invokeData.invoke); 680 } 681 return null; 682 } 683 684 private ResolvedJavaMethod getSpecialCallTarget(InvokeData invokeData, MethodCallTargetNode callTarget) { 685 if (callTarget.invokeKind().isDirect()) { 686 return null; 687 } 688 689 // check for trivial cases (e.g. final methods, nonvirtual methods) 690 if (callTarget.targetMethod().canBeStaticallyBound()) { 691 return callTarget.targetMethod(); 692 } 693 694 SpecialCallTargetCacheKey key = new SpecialCallTargetCacheKey(callTarget.invokeKind(), callTarget.targetMethod(), invokeData.contextType, callTarget.receiver().stamp(NodeView.DEFAULT)); 695 Object specialCallTarget = specialCallTargetCache.get(key); 696 if (specialCallTarget == null) { 697 specialCallTarget = MethodCallTargetNode.devirtualizeCall(key.invokeKind, key.targetMethod, key.contextType, graph.getAssumptions(), 698 key.receiverStamp); 699 if (specialCallTarget == null) { 700 specialCallTarget = CACHED_NULL_VALUE; 701 } 702 specialCallTargetCache.put(key, specialCallTarget); 703 } 704 705 return specialCallTarget == CACHED_NULL_VALUE ? null : (ResolvedJavaMethod) specialCallTarget; 706 } 707 708 protected boolean tryInvocationPlugin(PEMethodScope methodScope, LoopScope loopScope, InvokeData invokeData, MethodCallTargetNode callTarget) { 709 if (invocationPlugins == null || invocationPlugins.isEmpty()) { 710 return false; 711 } 712 713 Invoke invoke = invokeData.invoke; 714 715 ResolvedJavaMethod targetMethod = callTarget.targetMethod(); 716 InvocationPlugin invocationPlugin = getInvocationPlugin(targetMethod); 717 if (invocationPlugin == null) { 718 return false; 719 } 720 721 ValueNode[] arguments = callTarget.arguments().toArray(new ValueNode[0]); 722 FixedWithNextNode invokePredecessor = (FixedWithNextNode) invoke.asNode().predecessor(); 723 724 /* 725 * Remove invoke from graph so that invocation plugin can append nodes to the predecessor. 726 */ 727 invoke.asNode().replaceAtPredecessor(null); 728 729 PEMethodScope inlineScope = new PEMethodScope(graph, methodScope, loopScope, null, targetMethod, invokeData, methodScope.inliningDepth + 1, loopExplosionPlugin, arguments); 730 PEAppendGraphBuilderContext graphBuilderContext = new PEAppendGraphBuilderContext(inlineScope, invokePredecessor); 731 InvocationPluginReceiver invocationPluginReceiver = new InvocationPluginReceiver(graphBuilderContext); 732 733 if (invocationPlugin.execute(graphBuilderContext, targetMethod, invocationPluginReceiver.init(targetMethod, arguments), arguments)) { 734 735 if (graphBuilderContext.invokeConsumed) { 736 /* Nothing to do. */ 737 } else if (graphBuilderContext.lastInstr != null) { 738 registerNode(loopScope, invokeData.invokeOrderId, graphBuilderContext.pushedNode, true, true); 739 invoke.asNode().replaceAtUsages(graphBuilderContext.pushedNode); 740 graphBuilderContext.lastInstr.setNext(nodeAfterInvoke(methodScope, loopScope, invokeData, AbstractBeginNode.prevBegin(graphBuilderContext.lastInstr))); 741 deleteInvoke(invoke); 742 } else { 743 assert graphBuilderContext.pushedNode == null : "Why push a node when the invoke does not return anyway?"; 744 invoke.asNode().replaceAtUsages(null); 745 deleteInvoke(invoke); 746 } 747 return true; 748 749 } else { 750 /* Intrinsification failed, restore original state: invoke is in Graph. */ 751 invokePredecessor.setNext(invoke.asNode()); 752 return false; 753 } 754 } 755 756 private InvocationPlugin getInvocationPlugin(ResolvedJavaMethod targetMethod) { 757 Object invocationPlugin = invocationPluginCache.get(targetMethod); 758 if (invocationPlugin == null) { 759 invocationPlugin = invocationPlugins.lookupInvocation(targetMethod); 760 if (invocationPlugin == null) { 761 invocationPlugin = CACHED_NULL_VALUE; 762 } 763 invocationPluginCache.put(targetMethod, invocationPlugin); 764 } 765 766 return invocationPlugin == CACHED_NULL_VALUE ? null : (InvocationPlugin) invocationPlugin; 767 } 768 769 protected LoopScope tryInline(PEMethodScope methodScope, LoopScope loopScope, InvokeData invokeData, MethodCallTargetNode callTarget) { 770 if (!callTarget.invokeKind().isDirect()) { 771 return null; 772 } 773 774 ResolvedJavaMethod targetMethod = callTarget.targetMethod(); 775 if (targetMethod.hasNeverInlineDirective()) { 776 return null; 777 } 778 779 ValueNode[] arguments = callTarget.arguments().toArray(new ValueNode[0]); 780 GraphBuilderContext graphBuilderContext = new PENonAppendGraphBuilderContext(methodScope, invokeData.invoke); 781 782 for (InlineInvokePlugin plugin : inlineInvokePlugins) { 783 InlineInfo inlineInfo = plugin.shouldInlineInvoke(graphBuilderContext, targetMethod, arguments); 784 if (inlineInfo != null) { 785 if (inlineInfo.getMethodToInline() == null) { 786 return null; 787 } else { 788 return doInline(methodScope, loopScope, invokeData, inlineInfo, arguments); 789 } 790 } 791 } 792 return null; 793 } 794 795 protected LoopScope doInline(PEMethodScope methodScope, LoopScope loopScope, InvokeData invokeData, InlineInfo inlineInfo, ValueNode[] arguments) { 796 if (!invokeData.invoke.useForInlining()) { 797 return null; 798 } 799 ResolvedJavaMethod inlineMethod = inlineInfo.getMethodToInline(); 800 ResolvedJavaMethod originalMethod = inlineInfo.getOriginalMethod(); 801 boolean isSubstitution = originalMethod != null && !originalMethod.equals(inlineMethod); 802 EncodedGraph graphToInline = lookupEncodedGraph(inlineMethod, originalMethod, inlineInfo.getIntrinsicBytecodeProvider(), isSubstitution, graph.trackNodeSourcePosition()); 803 if (graphToInline == null) { 804 return null; 805 } 806 807 assert !graph.trackNodeSourcePosition() || graphToInline.trackNodeSourcePosition() : graph + " " + graphToInline; 808 if (methodScope.inliningDepth > Options.InliningDepthError.getValue(options)) { 809 throw tooDeepInlining(methodScope); 810 } 811 812 for (InlineInvokePlugin plugin : inlineInvokePlugins) { 813 plugin.notifyBeforeInline(inlineMethod); 814 } 815 816 Invoke invoke = invokeData.invoke; 817 FixedNode invokeNode = invoke.asNode(); 818 FixedWithNextNode predecessor = (FixedWithNextNode) invokeNode.predecessor(); 819 invokeNode.replaceAtPredecessor(null); 820 821 PEMethodScope inlineScope = new PEMethodScope(graph, methodScope, loopScope, graphToInline, inlineMethod, invokeData, methodScope.inliningDepth + 1, 822 loopExplosionPlugin, arguments); 823 824 if (!inlineMethod.isStatic()) { 825 if (StampTool.isPointerAlwaysNull(arguments[0])) { 826 /* 827 * The receiver is null, so we can unconditionally throw a NullPointerException 828 * instead of performing any inlining. 829 */ 830 DeoptimizeNode deoptimizeNode = graph.add(new DeoptimizeNode(DeoptimizationAction.InvalidateReprofile, DeoptimizationReason.NullCheckException)); 831 predecessor.setNext(deoptimizeNode); 832 finishInlining(inlineScope); 833 /* Continue decoding in the caller. */ 834 return loopScope; 835 836 } else if (!StampTool.isPointerNonNull(arguments[0])) { 837 /* The receiver might be null, so we need to insert a null check. */ 838 PEAppendGraphBuilderContext graphBuilderContext = new PEAppendGraphBuilderContext(inlineScope, predecessor); 839 arguments[0] = graphBuilderContext.nullCheckedValue(arguments[0]); 840 predecessor = graphBuilderContext.lastInstr; 841 } 842 } 843 844 LoopScope inlineLoopScope = createInitialLoopScope(inlineScope, predecessor); 845 846 /* 847 * The GraphEncoder assigns parameters a nodeId immediately after the fixed nodes. 848 * Initializing createdNodes here avoid decoding and immediately replacing the 849 * ParameterNodes. 850 */ 851 int firstArgumentNodeId = inlineScope.maxFixedNodeOrderId + 1; 852 for (int i = 0; i < arguments.length; i++) { 853 inlineLoopScope.createdNodes[firstArgumentNodeId + i] = arguments[i]; 854 } 855 856 // Copy assumptions from inlinee to caller 857 Assumptions assumptions = graph.getAssumptions(); 858 Assumptions inlinedAssumptions = graphToInline.getAssumptions(); 859 if (assumptions != null) { 860 if (inlinedAssumptions != null) { 861 assumptions.record(inlinedAssumptions); 862 } 863 } else { 864 assert inlinedAssumptions == null : String.format("cannot inline graph (%s) which makes assumptions into a graph (%s) that doesn't", inlineMethod, graph); 865 } 866 867 // Copy inlined methods from inlinee to caller 868 List<ResolvedJavaMethod> inlinedMethods = graphToInline.getInlinedMethods(); 869 if (inlinedMethods != null) { 870 for (ResolvedJavaMethod other : inlinedMethods) { 871 graph.recordMethod(other); 872 } 873 } 874 875 if (graphToInline.getFields() != null) { 876 for (ResolvedJavaField field : graphToInline.getFields()) { 877 graph.recordField(field); 878 } 879 } 880 if (graphToInline.hasUnsafeAccess()) { 881 graph.markUnsafeAccess(); 882 } 883 884 /* 885 * Do the actual inlining by returning the initial loop scope for the inlined method scope. 886 */ 887 return inlineLoopScope; 888 } 889 890 @Override 891 protected void finishInlining(MethodScope is) { 892 PEMethodScope inlineScope = (PEMethodScope) is; 893 ResolvedJavaMethod inlineMethod = inlineScope.method; 894 PEMethodScope methodScope = inlineScope.caller; 895 LoopScope loopScope = inlineScope.callerLoopScope; 896 InvokeData invokeData = inlineScope.invokeData; 897 Invoke invoke = invokeData.invoke; 898 FixedNode invokeNode = invoke.asNode(); 899 900 ValueNode exceptionValue = null; 901 int returnNodeCount = 0; 902 int unwindNodeCount = 0; 903 List<ControlSinkNode> returnAndUnwindNodes = inlineScope.returnAndUnwindNodes; 904 for (int i = 0; i < returnAndUnwindNodes.size(); i++) { 905 FixedNode fixedNode = returnAndUnwindNodes.get(i); 906 if (fixedNode instanceof ReturnNode) { 907 returnNodeCount++; 908 } else if (fixedNode.isAlive()) { 909 assert fixedNode instanceof UnwindNode; 910 unwindNodeCount++; 911 } 912 } 913 914 if (unwindNodeCount > 0) { 915 FixedNode unwindReplacement; 916 if (invoke instanceof InvokeWithExceptionNode) { 917 /* Decoding continues for the exception handler. */ 918 unwindReplacement = makeStubNode(methodScope, loopScope, invokeData.exceptionNextOrderId); 919 } else { 920 /* No exception handler available, so the only thing we can do is deoptimize. */ 921 unwindReplacement = graph.add(new DeoptimizeNode(DeoptimizationAction.InvalidateRecompile, DeoptimizationReason.NotCompiledExceptionHandler)); 922 } 923 924 if (unwindNodeCount == 1) { 925 /* Only one UnwindNode, we can use the exception directly. */ 926 UnwindNode unwindNode = getSingleMatchingNode(returnAndUnwindNodes, returnNodeCount > 0, UnwindNode.class); 927 exceptionValue = unwindNode.exception(); 928 unwindNode.replaceAndDelete(unwindReplacement); 929 930 } else { 931 /* 932 * More than one UnwindNode. This can happen with the loop explosion strategy 933 * FULL_EXPLODE_UNTIL_RETURN, where we keep exploding after the loop and therefore 934 * also explode exception paths. Merge the exception in a similar way as multiple 935 * return values. 936 */ 937 MergeNode unwindMergeNode = graph.add(new MergeNode()); 938 exceptionValue = InliningUtil.mergeValueProducers(unwindMergeNode, getMatchingNodes(returnAndUnwindNodes, returnNodeCount > 0, UnwindNode.class, unwindNodeCount), 939 null, unwindNode -> unwindNode.exception()); 940 unwindMergeNode.setNext(unwindReplacement); 941 942 ensureExceptionStateDecoded(inlineScope); 943 unwindMergeNode.setStateAfter(inlineScope.exceptionState.duplicateModified(JavaKind.Object, JavaKind.Object, exceptionValue)); 944 } 945 } 946 947 assert invoke.next() == null; 948 assert !(invoke instanceof InvokeWithExceptionNode) || ((InvokeWithExceptionNode) invoke).exceptionEdge() == null; 949 950 ValueNode returnValue; 951 if (returnNodeCount == 0) { 952 returnValue = null; 953 } else if (returnNodeCount == 1) { 954 ReturnNode returnNode = getSingleMatchingNode(returnAndUnwindNodes, unwindNodeCount > 0, ReturnNode.class); 955 returnValue = returnNode.result(); 956 FixedNode n = nodeAfterInvoke(methodScope, loopScope, invokeData, AbstractBeginNode.prevBegin(returnNode)); 957 returnNode.replaceAndDelete(n); 958 } else { 959 AbstractMergeNode merge = graph.add(new MergeNode()); 960 merge.setStateAfter((FrameState) ensureNodeCreated(methodScope, loopScope, invokeData.stateAfterOrderId)); 961 returnValue = InliningUtil.mergeReturns(merge, getMatchingNodes(returnAndUnwindNodes, unwindNodeCount > 0, ReturnNode.class, returnNodeCount)); 962 FixedNode n = nodeAfterInvoke(methodScope, loopScope, invokeData, merge); 963 merge.setNext(n); 964 } 965 invokeNode.replaceAtUsages(returnValue); 966 967 /* 968 * Usage the handles that we have on the return value and the exception to update the 969 * orderId->Node table. 970 */ 971 registerNode(loopScope, invokeData.invokeOrderId, returnValue, true, true); 972 if (invoke instanceof InvokeWithExceptionNode) { 973 registerNode(loopScope, invokeData.exceptionOrderId, exceptionValue, true, true); 974 } 975 if (inlineScope.exceptionPlaceholderNode != null) { 976 inlineScope.exceptionPlaceholderNode.replaceAtUsagesAndDelete(exceptionValue); 977 } 978 deleteInvoke(invoke); 979 980 for (InlineInvokePlugin plugin : inlineInvokePlugins) { 981 plugin.notifyAfterInline(inlineMethod); 982 } 983 } 984 985 @SuppressWarnings("unchecked") 986 private static <T> T getSingleMatchingNode(List<ControlSinkNode> returnAndUnwindNodes, boolean hasNonMatchingEntries, Class<T> clazz) { 987 if (!hasNonMatchingEntries) { 988 assert returnAndUnwindNodes.size() == 1; 989 return (T) returnAndUnwindNodes.get(0); 990 } 991 992 for (int i = 0; i < returnAndUnwindNodes.size(); i++) { 993 ControlSinkNode node = returnAndUnwindNodes.get(i); 994 if (clazz.isInstance(node)) { 995 return (T) node; 996 } 997 } 998 throw GraalError.shouldNotReachHere(); 999 } 1000 1001 @SuppressWarnings("unchecked") 1002 private static <T> List<T> getMatchingNodes(List<ControlSinkNode> returnAndUnwindNodes, boolean hasNonMatchingEntries, Class<T> clazz, int resultCount) { 1003 if (!hasNonMatchingEntries) { 1004 return (List<T>) returnAndUnwindNodes; 1005 } 1006 1007 List<T> result = new ArrayList<>(resultCount); 1008 for (int i = 0; i < returnAndUnwindNodes.size(); i++) { 1009 ControlSinkNode node = returnAndUnwindNodes.get(i); 1010 if (clazz.isInstance(node)) { 1011 result.add((T) node); 1012 } 1013 } 1014 assert result.size() == resultCount; 1015 return result; 1016 } 1017 1018 private static RuntimeException tooDeepInlining(PEMethodScope methodScope) { 1019 HashMap<ResolvedJavaMethod, Integer> methodCounts = new HashMap<>(); 1020 for (PEMethodScope cur = methodScope; cur != null; cur = cur.caller) { 1021 Integer oldCount = methodCounts.get(cur.method); 1022 methodCounts.put(cur.method, oldCount == null ? 1 : oldCount + 1); 1023 } 1024 1025 List<Map.Entry<ResolvedJavaMethod, Integer>> methods = new ArrayList<>(methodCounts.entrySet()); 1026 methods.sort((e1, e2) -> -Integer.compare(e1.getValue(), e2.getValue())); 1027 1028 StringBuilder msg = new StringBuilder("Too deep inlining, probably caused by recursive inlining.").append(System.lineSeparator()).append("== Inlined methods ordered by inlining frequency:"); 1029 for (Map.Entry<ResolvedJavaMethod, Integer> entry : methods) { 1030 msg.append(System.lineSeparator()).append(entry.getKey().format("%H.%n(%p) [")).append(entry.getValue()).append("]"); 1031 } 1032 msg.append(System.lineSeparator()).append("== Complete stack trace of inlined methods:"); 1033 int lastBci = 0; 1034 for (PEMethodScope cur = methodScope; cur != null; cur = cur.caller) { 1035 msg.append(System.lineSeparator()).append(cur.method.asStackTraceElement(lastBci)); 1036 if (cur.invokeData != null) { 1037 lastBci = cur.invokeData.invoke.bci(); 1038 } else { 1039 lastBci = 0; 1040 } 1041 } 1042 1043 throw new PermanentBailoutException(msg.toString()); 1044 } 1045 1046 public FixedNode nodeAfterInvoke(PEMethodScope methodScope, LoopScope loopScope, InvokeData invokeData, AbstractBeginNode lastBlock) { 1047 assert lastBlock.isAlive(); 1048 FixedNode n; 1049 if (invokeData.invoke instanceof InvokeWithExceptionNode) { 1050 registerNode(loopScope, invokeData.nextOrderId, lastBlock, false, false); 1051 n = makeStubNode(methodScope, loopScope, invokeData.nextNextOrderId); 1052 } else { 1053 n = makeStubNode(methodScope, loopScope, invokeData.nextOrderId); 1054 } 1055 return n; 1056 } 1057 1058 private static void deleteInvoke(Invoke invoke) { 1059 /* 1060 * Clean up unused nodes. We cannot just call killCFG on the invoke node because that can 1061 * kill too much: nodes that are decoded later can use values that appear unused by now. 1062 */ 1063 FrameState frameState = invoke.stateAfter(); 1064 invoke.asNode().safeDelete(); 1065 assert invoke.callTarget() == null : "must not have been added to the graph yet"; 1066 if (frameState != null && frameState.hasNoUsages()) { 1067 frameState.safeDelete(); 1068 } 1069 } 1070 1071 protected abstract EncodedGraph lookupEncodedGraph(ResolvedJavaMethod method, ResolvedJavaMethod originalMethod, BytecodeProvider intrinsicBytecodeProvider, boolean isSubstitution, 1072 boolean trackNodeSourcePosition); 1073 1074 @Override 1075 protected void handleFixedNode(MethodScope s, LoopScope loopScope, int nodeOrderId, FixedNode node) { 1076 PEMethodScope methodScope = (PEMethodScope) s; 1077 1078 if (node instanceof ForeignCallNode) { 1079 ForeignCallNode foreignCall = (ForeignCallNode) node; 1080 if (foreignCall.getBci() == BytecodeFrame.UNKNOWN_BCI && methodScope.invokeData != null) { 1081 foreignCall.setBci(methodScope.invokeData.invoke.bci()); 1082 } 1083 } 1084 1085 super.handleFixedNode(methodScope, loopScope, nodeOrderId, node); 1086 } 1087 1088 @SuppressWarnings("try") 1089 @Override 1090 protected Node canonicalizeFixedNode(MethodScope s, Node node) { 1091 PEMethodScope methodScope = (PEMethodScope) s; 1092 1093 Node replacedNode = node; 1094 if (nodePlugins != null && nodePlugins.length > 0) { 1095 if (node instanceof LoadFieldNode) { 1096 LoadFieldNode loadFieldNode = (LoadFieldNode) node; 1097 PEAppendGraphBuilderContext graphBuilderContext = new PEAppendGraphBuilderContext(methodScope, loadFieldNode); 1098 ResolvedJavaField field = loadFieldNode.field(); 1099 if (loadFieldNode.isStatic()) { 1100 for (NodePlugin nodePlugin : nodePlugins) { 1101 if (nodePlugin.handleLoadStaticField(graphBuilderContext, field)) { 1102 replacedNode = graphBuilderContext.pushedNode; 1103 break; 1104 } 1105 } 1106 } else { 1107 ValueNode object = loadFieldNode.object(); 1108 for (NodePlugin nodePlugin : nodePlugins) { 1109 if (nodePlugin.handleLoadField(graphBuilderContext, object, field)) { 1110 replacedNode = graphBuilderContext.pushedNode; 1111 break; 1112 } 1113 } 1114 } 1115 } else if (node instanceof StoreFieldNode) { 1116 StoreFieldNode storeFieldNode = (StoreFieldNode) node; 1117 PEAppendGraphBuilderContext graphBuilderContext = new PEAppendGraphBuilderContext(methodScope, storeFieldNode); 1118 ResolvedJavaField field = storeFieldNode.field(); 1119 if (storeFieldNode.isStatic()) { 1120 ValueNode value = storeFieldNode.value(); 1121 for (NodePlugin nodePlugin : nodePlugins) { 1122 if (nodePlugin.handleStoreStaticField(graphBuilderContext, field, value)) { 1123 replacedNode = graphBuilderContext.pushedNode; 1124 break; 1125 } 1126 } 1127 } else { 1128 ValueNode object = storeFieldNode.object(); 1129 ValueNode value = storeFieldNode.value(); 1130 for (NodePlugin nodePlugin : nodePlugins) { 1131 if (nodePlugin.handleStoreField(graphBuilderContext, object, field, value)) { 1132 replacedNode = graphBuilderContext.pushedNode; 1133 break; 1134 } 1135 } 1136 } 1137 } else if (node instanceof LoadIndexedNode) { 1138 LoadIndexedNode loadIndexedNode = (LoadIndexedNode) node; 1139 PEAppendGraphBuilderContext graphBuilderContext = new PEAppendGraphBuilderContext(methodScope, loadIndexedNode); 1140 ValueNode array = loadIndexedNode.array(); 1141 ValueNode index = loadIndexedNode.index(); 1142 for (NodePlugin nodePlugin : nodePlugins) { 1143 if (nodePlugin.handleLoadIndexed(graphBuilderContext, array, index, loadIndexedNode.getBoundsCheck(), loadIndexedNode.elementKind())) { 1144 replacedNode = graphBuilderContext.pushedNode; 1145 break; 1146 } 1147 } 1148 } else if (node instanceof StoreIndexedNode) { 1149 StoreIndexedNode storeIndexedNode = (StoreIndexedNode) node; 1150 PEAppendGraphBuilderContext graphBuilderContext = new PEAppendGraphBuilderContext(methodScope, storeIndexedNode); 1151 ValueNode array = storeIndexedNode.array(); 1152 ValueNode index = storeIndexedNode.index(); 1153 ValueNode value = storeIndexedNode.value(); 1154 for (NodePlugin nodePlugin : nodePlugins) { 1155 if (nodePlugin.handleStoreIndexed(graphBuilderContext, array, index, storeIndexedNode.getBoundsCheck(), storeIndexedNode.getStoreCheck(), storeIndexedNode.elementKind(), value)) { 1156 replacedNode = graphBuilderContext.pushedNode; 1157 break; 1158 } 1159 } 1160 } else if (node instanceof NewInstanceNode) { 1161 NewInstanceNode newInstanceNode = (NewInstanceNode) node; 1162 PEAppendGraphBuilderContext graphBuilderContext = new PEAppendGraphBuilderContext(methodScope, newInstanceNode); 1163 ResolvedJavaType type = newInstanceNode.instanceClass(); 1164 for (NodePlugin nodePlugin : nodePlugins) { 1165 if (nodePlugin.handleNewInstance(graphBuilderContext, type)) { 1166 replacedNode = graphBuilderContext.pushedNode; 1167 break; 1168 } 1169 } 1170 } else if (node instanceof NewArrayNode) { 1171 NewArrayNode newArrayNode = (NewArrayNode) node; 1172 PEAppendGraphBuilderContext graphBuilderContext = new PEAppendGraphBuilderContext(methodScope, newArrayNode); 1173 ResolvedJavaType elementType = newArrayNode.elementType(); 1174 ValueNode length = newArrayNode.length(); 1175 for (NodePlugin nodePlugin : nodePlugins) { 1176 if (nodePlugin.handleNewArray(graphBuilderContext, elementType, length)) { 1177 replacedNode = graphBuilderContext.pushedNode; 1178 break; 1179 } 1180 } 1181 } else if (node instanceof NewMultiArrayNode) { 1182 NewMultiArrayNode newArrayNode = (NewMultiArrayNode) node; 1183 PEAppendGraphBuilderContext graphBuilderContext = new PEAppendGraphBuilderContext(methodScope, newArrayNode); 1184 ResolvedJavaType elementType = newArrayNode.type(); 1185 ValueNode[] dimensions = newArrayNode.dimensions().toArray(new ValueNode[0]); 1186 for (NodePlugin nodePlugin : nodePlugins) { 1187 if (nodePlugin.handleNewMultiArray(graphBuilderContext, elementType, dimensions)) { 1188 replacedNode = graphBuilderContext.pushedNode; 1189 break; 1190 } 1191 } 1192 } 1193 } 1194 1195 return super.canonicalizeFixedNode(methodScope, replacedNode); 1196 } 1197 1198 @Override 1199 protected Node handleFloatingNodeBeforeAdd(MethodScope s, LoopScope loopScope, Node n) { 1200 PEMethodScope methodScope = (PEMethodScope) s; 1201 1202 Node node = n; 1203 if (node instanceof ParameterNode) { 1204 ParameterNode param = (ParameterNode) node; 1205 if (methodScope.isInlinedMethod()) { 1206 throw GraalError.shouldNotReachHere("Parameter nodes are already registered when the inlined scope is created"); 1207 1208 } else if (parameterPlugin != null) { 1209 assert !methodScope.isInlinedMethod(); 1210 GraphBuilderContext graphBuilderContext = new PENonAppendGraphBuilderContext(methodScope, null); 1211 Node result = parameterPlugin.interceptParameter(graphBuilderContext, param.index(), 1212 StampPair.create(param.stamp(NodeView.DEFAULT), param.uncheckedStamp())); 1213 if (result != null) { 1214 return result; 1215 } 1216 } 1217 node = param.copyWithInputs(); 1218 } 1219 1220 return super.handleFloatingNodeBeforeAdd(methodScope, loopScope, node); 1221 } 1222 1223 protected void ensureOuterStateDecoded(PEMethodScope methodScope) { 1224 if (methodScope.outerState == null && methodScope.caller != null) { 1225 FrameState stateAtReturn = methodScope.invokeData.invoke.stateAfter(); 1226 if (stateAtReturn == null) { 1227 stateAtReturn = (FrameState) decodeFloatingNode(methodScope.caller, methodScope.callerLoopScope, methodScope.invokeData.stateAfterOrderId); 1228 } 1229 1230 JavaKind invokeReturnKind = methodScope.invokeData.invoke.asNode().getStackKind(); 1231 FrameState outerState = stateAtReturn.duplicateModified(graph, methodScope.invokeData.invoke.bci(), stateAtReturn.rethrowException(), true, invokeReturnKind, null, null); 1232 1233 /* 1234 * When the encoded graph has methods inlining, we can already have a proper caller 1235 * state. If not, we set the caller state here. 1236 */ 1237 if (outerState.outerFrameState() == null && methodScope.caller != null) { 1238 ensureOuterStateDecoded(methodScope.caller); 1239 outerState.setOuterFrameState(methodScope.caller.outerState); 1240 } 1241 methodScope.outerState = outerState; 1242 } 1243 } 1244 1245 protected void ensureStateAfterDecoded(PEMethodScope methodScope) { 1246 if (methodScope.invokeData.invoke.stateAfter() == null) { 1247 methodScope.invokeData.invoke.setStateAfter((FrameState) ensureNodeCreated(methodScope.caller, methodScope.callerLoopScope, methodScope.invokeData.stateAfterOrderId)); 1248 } 1249 } 1250 1251 protected void ensureExceptionStateDecoded(PEMethodScope methodScope) { 1252 if (methodScope.exceptionState == null && methodScope.caller != null && methodScope.invokeData.invoke instanceof InvokeWithExceptionNode) { 1253 ensureStateAfterDecoded(methodScope); 1254 1255 assert methodScope.exceptionPlaceholderNode == null; 1256 methodScope.exceptionPlaceholderNode = graph.add(new ExceptionPlaceholderNode()); 1257 registerNode(methodScope.callerLoopScope, methodScope.invokeData.exceptionOrderId, methodScope.exceptionPlaceholderNode, false, false); 1258 FrameState exceptionState = (FrameState) ensureNodeCreated(methodScope.caller, methodScope.callerLoopScope, methodScope.invokeData.exceptionStateOrderId); 1259 1260 if (exceptionState.outerFrameState() == null && methodScope.caller != null) { 1261 ensureOuterStateDecoded(methodScope.caller); 1262 exceptionState.setOuterFrameState(methodScope.caller.outerState); 1263 } 1264 methodScope.exceptionState = exceptionState; 1265 } 1266 } 1267 1268 @Override 1269 protected Node handleFloatingNodeAfterAdd(MethodScope s, LoopScope loopScope, Node node) { 1270 PEMethodScope methodScope = (PEMethodScope) s; 1271 1272 if (methodScope.isInlinedMethod()) { 1273 if (node instanceof FrameState) { 1274 FrameState frameState = (FrameState) node; 1275 1276 ensureOuterStateDecoded(methodScope); 1277 if (frameState.bci < 0) { 1278 ensureExceptionStateDecoded(methodScope); 1279 } 1280 List<ValueNode> invokeArgsList = null; 1281 if (frameState.bci == BytecodeFrame.BEFORE_BCI) { 1282 /* 1283 * We know that the argument list is only used in this case, so avoid the List 1284 * allocation for "normal" bcis. 1285 */ 1286 invokeArgsList = Arrays.asList(methodScope.arguments); 1287 } 1288 return InliningUtil.processFrameState(frameState, methodScope.invokeData.invoke, null, methodScope.method, methodScope.exceptionState, methodScope.outerState, true, 1289 methodScope.method, invokeArgsList); 1290 1291 } else if (node instanceof MonitorIdNode) { 1292 ensureOuterStateDecoded(methodScope); 1293 InliningUtil.processMonitorId(methodScope.outerState, (MonitorIdNode) node); 1294 return node; 1295 } 1296 } 1297 1298 return node; 1299 } 1300 }