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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/PiArrayNode.java @ 16895:06c15e88d383

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added factory method to all Node classes; replaced Node classes instantiation with calls to factory methods; replaced identity tests on Node classes with ' == <node class>.getGenClass()' idiom
author Doug Simon <doug.simon@oracle.com>
date Mon, 18 Aug 2014 14:04:21 +0200
parents cbd42807a31f
children f90dcdbbb75e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /*
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2 * Copyright (c) 2012, 2012, 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.compiler.common.type.*;
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26 import com.oracle.graal.graph.*;
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27 import com.oracle.graal.graph.spi.*;
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28 import com.oracle.graal.nodeinfo.*;
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29 import com.oracle.graal.nodes.java.*;
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30 import com.oracle.graal.nodes.spi.*;
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32 /**
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33 * A {@link PiNode} that also provides an array length in addition to a more refined stamp. A usage
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34 * that reads the array length, such as an {@link ArrayLengthNode}, can be canonicalized based on
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35 * this information.
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36 */
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37 @NodeInfo
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38 public class PiArrayNode extends PiNode implements ArrayLengthProvider {
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40 @Input private ValueNode length;
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42 public ValueNode length() {
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43 return length;
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44 }
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45
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46 public static PiArrayNode create(ValueNode object, ValueNode length, Stamp stamp) {
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47 return new PiArrayNodeGen(object, length, stamp);
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48 }
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50 protected PiArrayNode(ValueNode object, ValueNode length, Stamp stamp) {
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51 super(object, stamp);
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52 this.length = length;
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53 }
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54
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55 @Override
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56 public Node canonical(CanonicalizerTool tool) {
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57 if (!(object() instanceof ArrayLengthProvider) || length() != ((ArrayLengthProvider) object()).length()) {
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58 return this;
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59 }
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60 return super.canonical(tool);
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61 }
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62
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63 @NodeIntrinsic
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64 public static native <T> T piArrayCast(Object object, int length, @ConstantNodeParameter Stamp stamp);
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65 }