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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/PiNode.java @ 5890:c241963cda6d

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added Stamp.join, used by PiNodes
author Lukas Stadler <lukas.stadler@jku.at>
date Mon, 20 Aug 2012 15:11:15 +0200
parents 73d12bcca62e
children 01d274503562
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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.nodes.calc.*;
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26 import com.oracle.graal.nodes.spi.*;
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27 import com.oracle.graal.nodes.type.*;
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29
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30 public class PiNode extends FloatingNode implements LIRLowerable {
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31
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32 @Input private ValueNode object;
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33 @Input(notDataflow = true) private final FixedNode anchor;
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34
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35 public ValueNode object() {
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36 return object;
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37 }
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38
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39 public FixedNode anchor() {
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40 return anchor;
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41 }
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42
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43 public PiNode(ValueNode object, FixedNode anchor, Stamp stamp) {
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44 super(stamp);
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45 this.object = object;
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46 this.anchor = anchor;
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47 }
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48
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49 @Override
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50 public void generate(LIRGeneratorTool generator) {
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51 generator.setResult(this, generator.operand(object));
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52 }
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ed08c40d67de Add a alwaysNull property to ObjectStamp (Phi(null, a! A) get a "a A" stamp and not just "a -")
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54 @Override
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55 public boolean inferStamp() {
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56 return updateStamp(stamp().join(object().stamp()));
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57 }
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58 }