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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/UnwindNode.java @ 11789:bc3bb6c6ca70

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Nodes that extend AbstractStateSplit do not need to implement StateSplit again
author Gilles Duboscq <duboscq@ssw.jku.at>
date Wed, 25 Sep 2013 12:12:45 +0200
parents 1870ea57e814
children c65150049959
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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;
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24
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25 import com.oracle.graal.api.meta.*;
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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 * Unwinds the current frame to an exception handler in the caller frame.
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31 */
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32 public final class UnwindNode extends ControlSinkNode implements LIRLowerable {
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34 @Input private ValueNode exception;
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36 public ValueNode exception() {
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37 return exception;
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38 }
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40 public UnwindNode(ValueNode exception) {
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41 super(StampFactory.forVoid());
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42 assert exception == null || exception.kind() == Kind.Object;
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43 this.exception = exception;
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44 }
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46 @Override
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47 public void generate(LIRGeneratorTool gen) {
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48 gen.emitUnwind(gen.operand(exception()));
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49 }
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50 }