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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/LoopExitNode.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 61d3cb8e1280
children a4aa2116cfe0
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1 /*
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2 * Copyright (c) 2012, 2015, 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.graph.*;
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26 import com.oracle.graal.graph.spi.*;
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27 import com.oracle.graal.nodeinfo.*;
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28
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29 @NodeInfo(allowedUsageTypes = {InputType.Association})
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30 public final class LoopExitNode extends BeginStateSplitNode implements IterableNodeType {
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32 public static final NodeClass<LoopExitNode> TYPE = NodeClass.create(LoopExitNode.class);
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33 @Input(InputType.Association) LoopBeginNode loopBegin;
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34
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35 public LoopExitNode(LoopBeginNode loop) {
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36 super(TYPE);
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37 assert loop != null;
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38 loopBegin = loop;
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39 }
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40
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41 public LoopBeginNode loopBegin() {
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42 return loopBegin;
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43 }
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44
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45 @Override
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46 public void simplify(SimplifierTool tool) {
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47 Node prev = this.predecessor();
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48 while (prev instanceof BeginNode && prev.hasNoUsages()) {
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49 AbstractBeginNode begin = (AbstractBeginNode) prev;
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50 prev = prev.predecessor();
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51 graph().removeFixed(begin);
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52 }
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53 }
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54 }