1 /* 2 * Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 25 package org.graalvm.compiler.nodes.memory; 26 27 import jdk.internal.vm.compiler.word.LocationIdentity; 28 29 /** 30 * Maps a {@linkplain LocationIdentity location} to the last node that (potentially) wrote to the 31 * location. 32 */ 33 public interface MemoryMap { 34 35 /** 36 * Gets the last node that that (potentially) wrote to {@code locationIdentity}. 37 */ getLastLocationAccess(LocationIdentity locationIdentity)38 MemoryNode getLastLocationAccess(LocationIdentity locationIdentity); 39 40 /** 41 * Gets the location identities in the domain of this map. 42 */ getLocations()43 Iterable<LocationIdentity> getLocations(); 44 } 45