MemoryMapNode.java revision 12651:6ef01bd40ce2
1187517Sgonzo/* 2187517Sgonzo * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved. 3187517Sgonzo * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4187517Sgonzo * 5187517Sgonzo * This code is free software; you can redistribute it and/or modify it 6187517Sgonzo * under the terms of the GNU General Public License version 2 only, as 7187517Sgonzo * published by the Free Software Foundation. 8187517Sgonzo * 9187517Sgonzo * This code is distributed in the hope that it will be useful, but WITHOUT 10187517Sgonzo * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11187517Sgonzo * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12187517Sgonzo * version 2 for more details (a copy is included in the LICENSE file that 13187517Sgonzo * accompanied this code). 14187517Sgonzo * 15187517Sgonzo * You should have received a copy of the GNU General Public License version 16187517Sgonzo * 2 along with this work; if not, write to the Free Software Foundation, 17187517Sgonzo * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18187517Sgonzo * 19187517Sgonzo * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20187517Sgonzo * or visit www.oracle.com if you need additional information or have any 21187517Sgonzo * questions. 22187517Sgonzo */ 23187517Sgonzopackage org.graalvm.compiler.nodes.memory; 24187517Sgonzo 25187517Sgonzoimport static org.graalvm.compiler.core.common.LocationIdentity.any; 26187517Sgonzoimport static org.graalvm.compiler.nodeinfo.InputType.Extension; 27187517Sgonzoimport static org.graalvm.compiler.nodeinfo.InputType.Memory; 28187517Sgonzoimport static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_0; 29187517Sgonzoimport static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_0; 30187517Sgonzo 31187517Sgonzoimport java.util.ArrayList; 32187517Sgonzoimport java.util.Collection; 33187517Sgonzoimport java.util.HashMap; 34187517Sgonzoimport java.util.List; 35187517Sgonzoimport java.util.Map; 36187517Sgonzo 37187517Sgonzoimport org.graalvm.compiler.core.common.CollectionsFactory; 38187517Sgonzoimport org.graalvm.compiler.core.common.LocationIdentity; 39187517Sgonzoimport org.graalvm.compiler.core.common.type.StampFactory; 40187517Sgonzoimport org.graalvm.compiler.graph.NodeClass; 41199497Sgonzoimport org.graalvm.compiler.graph.NodeInputList; 42187517Sgonzoimport org.graalvm.compiler.nodeinfo.NodeInfo; 43187517Sgonzoimport org.graalvm.compiler.nodes.StartNode; 44187517Sgonzoimport org.graalvm.compiler.nodes.ValueNode; 45221257Sadrianimport org.graalvm.compiler.nodes.calc.FloatingNode; 46187517Sgonzoimport org.graalvm.compiler.nodes.spi.LIRLowerable; 47188883Sgonzoimport org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; 48188883Sgonzo 49188883Sgonzo@NodeInfo(allowedUsageTypes = {Extension, Memory}, cycles = CYCLES_0, size = SIZE_0) 50188883Sgonzopublic final class MemoryMapNode extends FloatingNode implements MemoryMap, MemoryNode, LIRLowerable { 51188883Sgonzo 52188883Sgonzo public static final NodeClass<MemoryMapNode> TYPE = NodeClass.create(MemoryMapNode.class); 53188883Sgonzo protected final List<LocationIdentity> locationIdentities; 54187517Sgonzo @Input(Memory) NodeInputList<ValueNode> nodes; 55187517Sgonzo 56212413Savg private boolean checkOrder(Map<LocationIdentity, MemoryNode> mmap) { 57187517Sgonzo for (int i = 0; i < locationIdentities.size(); i++) { 58187517Sgonzo LocationIdentity locationIdentity = locationIdentities.get(i); 59187517Sgonzo ValueNode n = nodes.get(i); 60187517Sgonzo assertTrue(mmap.get(locationIdentity) == n, "iteration order of keys differs from values in input map"); 61187517Sgonzo } 62187517Sgonzo return true; 63187517Sgonzo } 64187517Sgonzo 65187517Sgonzo public MemoryMapNode(Map<LocationIdentity, MemoryNode> mmap) { 66187517Sgonzo super(TYPE, StampFactory.forVoid()); 67187517Sgonzo locationIdentities = new ArrayList<>(mmap.keySet()); 68187517Sgonzo nodes = new NodeInputList<>(this, mmap.values()); 69187517Sgonzo assert checkOrder(mmap); 70187517Sgonzo } 71187517Sgonzo 72187517Sgonzo public boolean isEmpty() { 73187517Sgonzo if (locationIdentities.isEmpty()) { 74187517Sgonzo return true; 75192822Sgonzo } 76192822Sgonzo if (locationIdentities.size() == 1) { 77187517Sgonzo if (nodes.get(0) instanceof StartNode) { 78192822Sgonzo return true; 79187517Sgonzo } 80187517Sgonzo } 81187517Sgonzo return false; 82187517Sgonzo } 83187517Sgonzo 84187517Sgonzo @Override 85187517Sgonzo public MemoryNode getLastLocationAccess(LocationIdentity locationIdentity) { 86192822Sgonzo if (locationIdentity.isImmutable()) { 87192822Sgonzo return null; 88187517Sgonzo } else { 89187517Sgonzo int index = locationIdentities.indexOf(locationIdentity); 90192822Sgonzo if (index == -1) { 91187517Sgonzo index = locationIdentities.indexOf(any()); 92187517Sgonzo } 93187517Sgonzo assert index != -1; 94187517Sgonzo return (MemoryNode) nodes.get(index); 95187517Sgonzo } 96187517Sgonzo } 97187517Sgonzo 98187517Sgonzo @Override 99187517Sgonzo public Collection<LocationIdentity> getLocations() { 100187517Sgonzo return locationIdentities; 101187517Sgonzo } 102187517Sgonzo 103187517Sgonzo public Map<LocationIdentity, MemoryNode> toMap() { 104187517Sgonzo HashMap<LocationIdentity, MemoryNode> res = CollectionsFactory.newMap(locationIdentities.size()); 105187517Sgonzo for (int i = 0; i < nodes.size(); i++) { 106187517Sgonzo res.put(locationIdentities.get(i), (MemoryNode) nodes.get(i)); 107187517Sgonzo } 108187517Sgonzo return res; 109187517Sgonzo } 110191837Sgonzo 111191837Sgonzo @Override 112191837Sgonzo public void generate(NodeLIRBuilderTool generator) { 113191837Sgonzo // nothing to do... 114191837Sgonzo } 115191837Sgonzo} 116191837Sgonzo