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annotate graal/GraalCompiler/src/com/sun/c1x/ir/ExceptionObject.java @ 2827:bd17ac598c6e

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Graph cloning, initial version (not completely working)
author Lukas Stadler <lukas.stadler@jku.at>
date Mon, 30 May 2011 18:46:57 +0200
parents 015be60afcf3
children 14708c03abba
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1 /*
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2 * Copyright (c) 2009, 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.sun.c1x.ir;
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24
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25 import com.oracle.graal.graph.*;
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26 import com.sun.c1x.debug.*;
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27 import com.sun.cri.ci.*;
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28
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29 /**
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30 * The {@code ExceptionObject} instruction represents the incoming exception object to an exception handler.
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31 */
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32 public final class ExceptionObject extends Instruction {
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33
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34 private static final int INPUT_COUNT = 0;
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35 private static final int SUCCESSOR_COUNT = 0;
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36
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37 /**
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38 * Constructs a new ExceptionObject instruction.
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39 * @param stateBefore TODO
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40 * @param graph
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41 */
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42 public ExceptionObject(Graph graph) {
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43 super(CiKind.Object, INPUT_COUNT, SUCCESSOR_COUNT, graph);
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44 setNonNull(true);
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45 }
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46
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47 @Override
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48 public void accept(ValueVisitor v) {
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49 v.visitExceptionObject(this);
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50 }
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51
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52 @Override
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53 public void print(LogStream out) {
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54 out.print("incoming exception");
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55 }
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57 @Override
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58 public Node copy(Graph into) {
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59 ExceptionObject x = new ExceptionObject(into);
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60 x.setNonNull(isNonNull());
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61 return x;
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62 }
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63 }