001/*
002 * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.nodes;
024
025import jdk.internal.jvmci.meta.*;
026
027import com.oracle.graal.graph.*;
028import com.oracle.graal.graph.spi.*;
029import com.oracle.graal.nodeinfo.*;
030import com.oracle.graal.nodes.spi.*;
031
032@NodeInfo
033public final class DynamicDeoptimizeNode extends AbstractDeoptimizeNode implements LIRLowerable, Lowerable, Canonicalizable {
034    public static final NodeClass<DynamicDeoptimizeNode> TYPE = NodeClass.create(DynamicDeoptimizeNode.class);
035    @Input ValueNode actionAndReason;
036    @Input ValueNode speculation;
037
038    public DynamicDeoptimizeNode(ValueNode actionAndReason, ValueNode speculation) {
039        super(TYPE, null);
040        this.actionAndReason = actionAndReason;
041        this.speculation = speculation;
042    }
043
044    public ValueNode getActionAndReason() {
045        return actionAndReason;
046    }
047
048    public ValueNode getSpeculation() {
049        return speculation;
050    }
051
052    @Override
053    public ValueNode getActionAndReason(MetaAccessProvider metaAccess) {
054        return getActionAndReason();
055    }
056
057    @Override
058    public ValueNode getSpeculation(MetaAccessProvider metaAccess) {
059        return getSpeculation();
060    }
061
062    @Override
063    public void lower(LoweringTool tool) {
064        tool.getLowerer().lower(this, tool);
065    }
066
067    public void generate(NodeLIRBuilderTool generator) {
068        generator.getLIRGeneratorTool().emitDeoptimize(generator.operand(actionAndReason), generator.operand(speculation), generator.state(this));
069    }
070
071    @Override
072    public Node canonical(CanonicalizerTool tool) {
073        if (actionAndReason.isConstant() && speculation.isConstant()) {
074            JavaConstant constant = actionAndReason.asJavaConstant();
075            JavaConstant speculationConstant = speculation.asJavaConstant();
076            DeoptimizeNode newDeopt = new DeoptimizeNode(tool.getMetaAccess().decodeDeoptAction(constant), tool.getMetaAccess().decodeDeoptReason(constant), tool.getMetaAccess().decodeDebugId(
077                            constant), speculationConstant, stateBefore());
078            return newDeopt;
079        }
080        return this;
081    }
082}