001/*
002 * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.nodes.memory;
024
025import java.util.*;
026
027import jdk.internal.jvmci.meta.*;
028
029/**
030 * Maps a {@linkplain LocationIdentity location} to the last node that (potentially) wrote to the
031 * location.
032 */
033public interface MemoryMap {
034
035    /**
036     * Gets the last node that that (potentially) wrote to {@code locationIdentity}.
037     */
038    MemoryNode getLastLocationAccess(LocationIdentity locationIdentity);
039
040    /**
041     * Gets the location identities in the domain of this map.
042     */
043    Collection<LocationIdentity> getLocations();
044}