Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/RegisterFinalizerNode.java @ 7064:8d16b9b2c51e
first part of refactoring the InliningPhase
added control-flow sensitive inlining
inlining requires an Assumption object so that HotSpot can keep track of the inlined methods
author | Christian Haeubl <haeubl@ssw.jku.at> |
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date | Thu, 22 Nov 2012 13:30:14 +0100 |
parents | 2463eb24b644 |
children | ae69cd8c08a9 |
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/* * Copyright (c) 2011, 2011, 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 com.oracle.graal.api.code.*; import com.oracle.graal.api.code.RuntimeCall.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; /** * This node is used to perform the finalizer registration at the end of the java.lang.Object constructor. */ public final class RegisterFinalizerNode extends AbstractStateSplit implements StateSplit, Canonicalizable, LIRLowerable { public static final Descriptor REGISTER_FINALIZER = new Descriptor("registerFinalizer", true, Kind.Void, Kind.Object); @Input private ValueNode object; public ValueNode object() { return object; } public RegisterFinalizerNode(ValueNode object) { super(StampFactory.forVoid()); this.object = object; } @Override public void generate(LIRGeneratorTool gen) { RuntimeCall call = gen.getRuntime().lookupRuntimeCall(REGISTER_FINALIZER); gen.emitCall(call, call.getCallingConvention(), true, gen.operand(object())); } @Override public ValueNode canonical(CanonicalizerTool tool) { ObjectStamp stamp = object.objectStamp(); boolean needsCheck = true; if (stamp.isExactType()) { needsCheck = stamp.type().hasFinalizer(); } else if (stamp.type() != null && !stamp.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(stamp.type())) { needsCheck = false; } } if (!needsCheck) { return null; } return this; } }