Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/RegisterFinalizerNode.java @ 17450:45b45f902bed
removed Node generation (GRAAL-857)
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Wed, 15 Oct 2014 15:35:33 +0200 |
parents | 845e881ce054 |
children | f57d86eb036f |
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/* * Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.graal.nodes.java; import static com.oracle.graal.nodes.java.ForeignCallDescriptors.*; import com.oracle.graal.api.code.*; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.graph.spi.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; /** * This node is used to perform the finalizer registration at the end of the java.lang.Object * constructor. */ @NodeInfo public class RegisterFinalizerNode extends AbstractStateSplit implements Canonicalizable.Unary<ValueNode>, LIRLowerable, Virtualizable, DeoptimizingNode.DeoptAfter { @OptionalInput(InputType.State) FrameState deoptState; @Input ValueNode value; public static RegisterFinalizerNode create(ValueNode value) { return new RegisterFinalizerNode(value); } protected RegisterFinalizerNode(ValueNode value) { super(StampFactory.forVoid()); this.value = value; } public ValueNode getValue() { return value; } @Override public void generate(NodeLIRBuilderTool gen) { ForeignCallLinkage linkage = gen.getLIRGeneratorTool().getForeignCalls().lookupForeignCall(REGISTER_FINALIZER); gen.getLIRGeneratorTool().emitForeignCall(linkage, gen.state(this), gen.operand(getValue())); } @Override public ValueNode canonical(CanonicalizerTool tool, ValueNode forValue) { if (!(forValue.stamp() instanceof ObjectStamp)) { return this; } ObjectStamp objectStamp = (ObjectStamp) forValue.stamp(); boolean needsCheck = true; if (objectStamp.isExactType()) { needsCheck = objectStamp.type().hasFinalizer(); } else if (objectStamp.type() != null && !objectStamp.type().hasFinalizableSubclass()) { // if either the declared type of receiver or the holder // can be assumed to have no finalizers if (tool.assumptions().useOptimisticAssumptions()) { tool.assumptions().recordNoFinalizableSubclassAssumption(objectStamp.type()); needsCheck = false; } } if (!needsCheck) { return null; } return this; } @Override public void virtualize(VirtualizerTool tool) { State state = tool.getObjectState(getValue()); if (state != null && !state.getVirtualObject().type().hasFinalizer()) { tool.delete(); } } @Override public boolean canDeoptimize() { return true; } @SuppressWarnings("unused") @NodeIntrinsic public static void register(Object thisObj) { } }