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annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/memory/MemoryCheckpoint.java @ 21522:28cbfacd0518

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Merge
author Gilles Duboscq <gilles.m.duboscq@oracle.com>
date Thu, 28 May 2015 17:44:05 +0200
parents graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/MemoryCheckpoint.java@3d0116ec99c5 graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/MemoryCheckpoint.java@cba35d171cd1
children 47bebae7454f
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1 /*
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2 * Copyright (c) 2011, 2015, 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.memory;
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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.graph.*;
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27 import com.oracle.graal.nodes.*;
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28
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29 /**
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30 * This interface marks subclasses of {@link FixedNode} that kill a set of memory locations
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31 * represented by location identities (i.e. change a value at one or more locations that belong to
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32 * these location identities).
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33 */
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34 public interface MemoryCheckpoint extends MemoryNode {
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35
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36 FixedNode asNode();
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37
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38 interface Single extends MemoryCheckpoint {
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39
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40 /**
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41 * This method is used to determine which memory location is killed by this node. Returning
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42 * the special value {@link LocationIdentity#any()} will kill all memory locations.
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43 *
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44 * @return the identity of the location killed by this node.
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45 */
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46 LocationIdentity getLocationIdentity();
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47
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48 }
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49
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50 interface Multi extends MemoryCheckpoint {
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51
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52 /**
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53 * This method is used to determine which set of memory locations is killed by this node.
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54 * Returning the special value {@link LocationIdentity#any()} will kill all memory
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55 * locations.
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56 *
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57 * @return the identities of all locations killed by this node.
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58 */
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59 LocationIdentity[] getLocationIdentities();
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60
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61 }
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62
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63 public class TypeAssertion {
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64
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65 public static boolean correctType(Node node) {
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66 return !(node instanceof MemoryCheckpoint) || (node instanceof MemoryCheckpoint.Single ^ node instanceof MemoryCheckpoint.Multi);
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67 }
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68 }
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69 }