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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/SafeWriteNode.java @ 5110:0ebca2e35ca5

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more preparations for disabling runtime feedback selectively based on deoptimization history
author Christian Haeubl <christian.haeubl@oracle.com>
date Thu, 15 Mar 2012 15:31:34 -0700
parents 6766253384bf
children dad1ac9dba7d
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1 /*
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2 * Copyright (c) 2011, 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.extended;
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24
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25 import com.oracle.graal.cri.*;
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26 import com.oracle.graal.nodes.*;
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27 import com.oracle.graal.nodes.calc.*;
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28 import com.oracle.graal.nodes.spi.*;
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29 import com.oracle.max.cri.ci.*;
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32 public class SafeWriteNode extends SafeAccessNode implements Lowerable{
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34 @Input private ValueNode value;
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36 public SafeWriteNode(ValueNode object, ValueNode value, LocationNode location) {
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37 super(CiKind.Void, object, location);
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38 this.value = value;
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39 }
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40
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41 public ValueNode value() {
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42 return value;
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43 }
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44
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45 @Override
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46 public void lower(CiLoweringTool tool) {
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47 StructuredGraph graph = (StructuredGraph) graph();
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48 GuardNode guard = (GuardNode) tool.createGuard(graph.unique(new NullCheckNode(object(), false)), DeoptReason.NullCheckException);
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49 WriteNode write = graph.add(new WriteNode(object(), value(), location()));
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50 write.setGuard(guard);
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51 graph.replaceFixedWithFixed(this, write);
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52 }
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53 }