566 StructuredGraph graph = loadMethodNode.graph();
567 HotSpotResolvedJavaMethod method = (HotSpotResolvedJavaMethod) loadMethodNode.getMethod();
568 ReadNode metaspaceMethod = createReadVirtualMethod(graph, loadMethodNode.getHub(), method, loadMethodNode.getReceiverType());
569 graph.replaceFixed(loadMethodNode, metaspaceMethod);
570 }
571
572 private static void lowerGetClassNode(GetClassNode getClass, LoweringTool tool, StructuredGraph graph) {
573 StampProvider stampProvider = tool.getStampProvider();
574 LoadHubNode hub = graph.unique(new LoadHubNode(stampProvider, getClass.getObject()));
575 HubGetClassNode hubGetClass = graph.unique(new HubGetClassNode(tool.getMetaAccess(), hub));
576 getClass.replaceAtUsagesAndDelete(hubGetClass);
577 hub.lower(tool);
578 hubGetClass.lower(tool);
579 }
580
581 private void lowerStoreHubNode(StoreHubNode storeHub, StructuredGraph graph) {
582 WriteNode hub = createWriteHub(graph, storeHub.getObject(), storeHub.getValue());
583 graph.replaceFixed(storeHub, hub);
584 }
585
586 @Override
587 public BarrierType fieldInitializationBarrier(JavaKind entryKind) {
588 return (entryKind == JavaKind.Object && !runtime.getVMConfig().useDeferredInitBarriers) ? BarrierType.IMPRECISE : BarrierType.NONE;
589 }
590
591 @Override
592 public BarrierType arrayInitializationBarrier(JavaKind entryKind) {
593 return (entryKind == JavaKind.Object && !runtime.getVMConfig().useDeferredInitBarriers) ? BarrierType.PRECISE : BarrierType.NONE;
594 }
595
596 private void lowerOSRStartNode(OSRStartNode osrStart) {
597 StructuredGraph graph = osrStart.graph();
598 if (graph.getGuardsStage() == StructuredGraph.GuardsStage.FIXED_DEOPTS) {
599 StartNode newStart = graph.add(new StartNode());
600 ParameterNode buffer = graph.addWithoutUnique(new ParameterNode(0, StampPair.createSingle(StampFactory.forKind(runtime.getTarget().wordJavaKind))));
601 ForeignCallNode migrationEnd = graph.add(new ForeignCallNode(foreignCalls, OSR_MIGRATION_END, buffer));
602 migrationEnd.setStateAfter(osrStart.stateAfter());
603 newStart.setNext(migrationEnd);
604 FixedNode next = osrStart.next();
605 osrStart.setNext(null);
606 migrationEnd.setNext(next);
607 graph.setStart(newStart);
608
609 final int wordSize = target.wordSize;
610
611 // @formatter:off
612 // taken from c2 locals_addr = osr_buf + (max_locals-1)*wordSize)
613 // @formatter:on
614 int localsOffset = (graph.method().getMaxLocals() - 1) * wordSize;
615 for (OSRLocalNode osrLocal : graph.getNodes(OSRLocalNode.TYPE)) {
766 } else {
767 return memoryRead;
768 }
769 }
770
771 private WriteNode createWriteHub(StructuredGraph graph, ValueNode object, ValueNode value) {
772 assert !object.isConstant() || object.asConstant().isDefaultForKind();
773
774 ValueNode writeValue = value;
775 if (runtime.getVMConfig().useCompressedClassPointers) {
776 writeValue = HotSpotCompressionNode.compress(value, runtime.getVMConfig().getKlassEncoding());
777 }
778
779 AddressNode address = createOffsetAddress(graph, object, runtime.getVMConfig().hubOffset);
780 return graph.add(new WriteNode(address, HUB_WRITE_LOCATION, writeValue, BarrierType.NONE));
781 }
782
783 @Override
784 protected BarrierType fieldLoadBarrierType(ResolvedJavaField f) {
785 HotSpotResolvedJavaField loadField = (HotSpotResolvedJavaField) f;
786 BarrierType barrierType = BarrierType.NONE;
787 if (runtime.getVMConfig().useG1GC && loadField.getJavaKind() == JavaKind.Object && metaAccess.lookupJavaType(Reference.class).equals(loadField.getDeclaringClass()) &&
788 loadField.getName().equals("referent")) {
789 barrierType = BarrierType.PRECISE;
790 }
791 return barrierType;
792 }
793
794 @Override
795 public int fieldOffset(ResolvedJavaField f) {
796 return f.getOffset();
797 }
798
799 @Override
800 public int arrayLengthOffset() {
801 return runtime.getVMConfig().arrayOopDescLengthOffset();
802 }
803
804 @Override
805 protected final JavaKind getStorageKind(ResolvedJavaField field) {
806 return field.getJavaKind();
807 }
808
809 @Override
810 public ObjectCloneSnippets.Templates getObjectCloneSnippets() {
811 return objectCloneSnippets;
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566 StructuredGraph graph = loadMethodNode.graph();
567 HotSpotResolvedJavaMethod method = (HotSpotResolvedJavaMethod) loadMethodNode.getMethod();
568 ReadNode metaspaceMethod = createReadVirtualMethod(graph, loadMethodNode.getHub(), method, loadMethodNode.getReceiverType());
569 graph.replaceFixed(loadMethodNode, metaspaceMethod);
570 }
571
572 private static void lowerGetClassNode(GetClassNode getClass, LoweringTool tool, StructuredGraph graph) {
573 StampProvider stampProvider = tool.getStampProvider();
574 LoadHubNode hub = graph.unique(new LoadHubNode(stampProvider, getClass.getObject()));
575 HubGetClassNode hubGetClass = graph.unique(new HubGetClassNode(tool.getMetaAccess(), hub));
576 getClass.replaceAtUsagesAndDelete(hubGetClass);
577 hub.lower(tool);
578 hubGetClass.lower(tool);
579 }
580
581 private void lowerStoreHubNode(StoreHubNode storeHub, StructuredGraph graph) {
582 WriteNode hub = createWriteHub(graph, storeHub.getObject(), storeHub.getValue());
583 graph.replaceFixed(storeHub, hub);
584 }
585
586 private void lowerOSRStartNode(OSRStartNode osrStart) {
587 StructuredGraph graph = osrStart.graph();
588 if (graph.getGuardsStage() == StructuredGraph.GuardsStage.FIXED_DEOPTS) {
589 StartNode newStart = graph.add(new StartNode());
590 ParameterNode buffer = graph.addWithoutUnique(new ParameterNode(0, StampPair.createSingle(StampFactory.forKind(runtime.getTarget().wordJavaKind))));
591 ForeignCallNode migrationEnd = graph.add(new ForeignCallNode(foreignCalls, OSR_MIGRATION_END, buffer));
592 migrationEnd.setStateAfter(osrStart.stateAfter());
593 newStart.setNext(migrationEnd);
594 FixedNode next = osrStart.next();
595 osrStart.setNext(null);
596 migrationEnd.setNext(next);
597 graph.setStart(newStart);
598
599 final int wordSize = target.wordSize;
600
601 // @formatter:off
602 // taken from c2 locals_addr = osr_buf + (max_locals-1)*wordSize)
603 // @formatter:on
604 int localsOffset = (graph.method().getMaxLocals() - 1) * wordSize;
605 for (OSRLocalNode osrLocal : graph.getNodes(OSRLocalNode.TYPE)) {
756 } else {
757 return memoryRead;
758 }
759 }
760
761 private WriteNode createWriteHub(StructuredGraph graph, ValueNode object, ValueNode value) {
762 assert !object.isConstant() || object.asConstant().isDefaultForKind();
763
764 ValueNode writeValue = value;
765 if (runtime.getVMConfig().useCompressedClassPointers) {
766 writeValue = HotSpotCompressionNode.compress(value, runtime.getVMConfig().getKlassEncoding());
767 }
768
769 AddressNode address = createOffsetAddress(graph, object, runtime.getVMConfig().hubOffset);
770 return graph.add(new WriteNode(address, HUB_WRITE_LOCATION, writeValue, BarrierType.NONE));
771 }
772
773 @Override
774 protected BarrierType fieldLoadBarrierType(ResolvedJavaField f) {
775 HotSpotResolvedJavaField loadField = (HotSpotResolvedJavaField) f;
776 if (loadField.getJavaKind() == JavaKind.Object && metaAccess.lookupJavaType(Reference.class).equals(loadField.getDeclaringClass()) &&
777 loadField.getName().equals("referent")) {
778 return BarrierType.WEAK_FIELD;
779 }
780 return super.fieldLoadBarrierType(f);
781 }
782
783 @Override
784 public int fieldOffset(ResolvedJavaField f) {
785 return f.getOffset();
786 }
787
788 @Override
789 public int arrayLengthOffset() {
790 return runtime.getVMConfig().arrayOopDescLengthOffset();
791 }
792
793 @Override
794 protected final JavaKind getStorageKind(ResolvedJavaField field) {
795 return field.getJavaKind();
796 }
797
798 @Override
799 public ObjectCloneSnippets.Templates getObjectCloneSnippets() {
800 return objectCloneSnippets;
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