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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/AbstractDeoptimizeNode.java @ 19526:8fc336a04d77

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Create TYPE fields for LIRInstruction and CompositeValue. Renaming NodeClass#get to NodeClass#create.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Fri, 20 Feb 2015 22:22:55 +0100
parents 880717e44675
children 48c1ebd24120
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1 /*
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2 * Copyright (c) 2013, 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.graal.nodes;
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24
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25 import com.oracle.graal.api.meta.*;
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26 import com.oracle.graal.compiler.common.type.*;
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27 import com.oracle.graal.graph.*;
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28 import com.oracle.graal.nodeinfo.*;
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29
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30 /**
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31 * This node represents an unconditional explicit request for immediate deoptimization.
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32 *
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33 * After this node, execution will continue using a fallback execution engine (such as an
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34 * interpreter) at the position described by the {@link #stateBefore() deoptimization state}.
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35 */
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36 @NodeInfo
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37 public abstract class AbstractDeoptimizeNode extends ControlSinkNode implements IterableNodeType, DeoptimizingNode.DeoptBefore {
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38
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39 public static final NodeClass<AbstractDeoptimizeNode> TYPE = NodeClass.create(AbstractDeoptimizeNode.class);
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40 @OptionalInput(InputType.State) FrameState stateBefore;
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41
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42 protected AbstractDeoptimizeNode(NodeClass<? extends AbstractDeoptimizeNode> c, FrameState stateBefore) {
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43 super(c, StampFactory.forVoid());
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44 this.stateBefore = stateBefore;
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45 }
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46
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47 @Override
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48 public boolean canDeoptimize() {
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49 return true;
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50 }
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51
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52 @Override
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53 public FrameState stateBefore() {
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54 return stateBefore;
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55 }
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56
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57 @Override
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58 public void setStateBefore(FrameState f) {
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59 updateUsages(stateBefore, f);
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60 stateBefore = f;
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61 }
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62
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63 public abstract ValueNode getActionAndReason(MetaAccessProvider metaAccess);
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65 public abstract ValueNode getSpeculation(MetaAccessProvider metaAccess);
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66 }