| /* |
| * Copyright (c) 2011, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package org.graalvm.compiler.virtual.phases.ea; |
| |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.graalvm.compiler.core.common.CollectionsFactory; |
| import org.graalvm.compiler.core.common.LocationIdentity; |
| import org.graalvm.compiler.nodes.FieldLocationIdentity; |
| import org.graalvm.compiler.nodes.ValueNode; |
| import org.graalvm.compiler.nodes.virtual.AllocatedObjectNode; |
| import org.graalvm.compiler.nodes.virtual.VirtualInstanceNode; |
| import org.graalvm.compiler.nodes.virtual.VirtualObjectNode; |
| |
| public class PEReadEliminationBlockState extends PartialEscapeBlockState<PEReadEliminationBlockState> { |
| |
| final HashMap<ReadCacheEntry, ValueNode> readCache; |
| |
| static final class ReadCacheEntry { |
| |
| public final LocationIdentity identity; |
| public final ValueNode object; |
| public final int index; |
| |
| ReadCacheEntry(LocationIdentity identity, ValueNode object, int index) { |
| this.identity = identity; |
| this.object = object; |
| this.index = index; |
| } |
| |
| @Override |
| public int hashCode() { |
| int result = 31 + ((identity == null) ? 0 : identity.hashCode()); |
| result = 31 * result + ((object == null) ? 0 : object.hashCode()); |
| return result * 31 + index; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (!(obj instanceof ReadCacheEntry)) { |
| return false; |
| } |
| ReadCacheEntry other = (ReadCacheEntry) obj; |
| return identity.equals(other.identity) && object == other.object; |
| } |
| |
| @Override |
| public String toString() { |
| return index == -1 ? (object + ":" + identity) : (object + "[" + index + "]:" + identity); |
| } |
| } |
| |
| public PEReadEliminationBlockState() { |
| readCache = CollectionsFactory.newMap(); |
| } |
| |
| public PEReadEliminationBlockState(PEReadEliminationBlockState other) { |
| super(other); |
| readCache = CollectionsFactory.newMap(other.readCache); |
| } |
| |
| @Override |
| public String toString() { |
| return super.toString() + " " + readCache; |
| } |
| |
| @Override |
| protected void objectMaterialized(VirtualObjectNode virtual, AllocatedObjectNode representation, List<ValueNode> values) { |
| if (virtual instanceof VirtualInstanceNode) { |
| VirtualInstanceNode instance = (VirtualInstanceNode) virtual; |
| for (int i = 0; i < instance.entryCount(); i++) { |
| readCache.put(new ReadCacheEntry(new FieldLocationIdentity(instance.field(i)), representation, -1), values.get(i)); |
| } |
| } |
| } |
| |
| @Override |
| public boolean equivalentTo(PEReadEliminationBlockState other) { |
| if (!compareMapsNoSize(readCache, other.readCache)) { |
| return false; |
| } |
| return super.equivalentTo(other); |
| } |
| |
| public void addReadCache(ValueNode object, LocationIdentity identity, int index, ValueNode value, PartialEscapeClosure<?> closure) { |
| ValueNode cacheObject; |
| ObjectState obj = closure.getObjectState(this, object); |
| if (obj != null) { |
| assert !obj.isVirtual(); |
| cacheObject = obj.getMaterializedValue(); |
| } else { |
| cacheObject = object; |
| } |
| readCache.put(new ReadCacheEntry(identity, cacheObject, index), value); |
| } |
| |
| public ValueNode getReadCache(ValueNode object, LocationIdentity identity, int index, PartialEscapeClosure<?> closure) { |
| ValueNode cacheObject; |
| ObjectState obj = closure.getObjectState(this, object); |
| if (obj != null) { |
| assert !obj.isVirtual() : object; |
| cacheObject = obj.getMaterializedValue(); |
| } else { |
| cacheObject = object; |
| } |
| ValueNode cacheValue = readCache.get(new ReadCacheEntry(identity, cacheObject, index)); |
| obj = closure.getObjectState(this, cacheValue); |
| if (obj != null) { |
| assert !obj.isVirtual(); |
| cacheValue = obj.getMaterializedValue(); |
| } else { |
| // assert !scalarAliases.containsKey(cacheValue); |
| cacheValue = closure.getScalarAlias(cacheValue); |
| } |
| return cacheValue; |
| } |
| |
| public void killReadCache() { |
| readCache.clear(); |
| } |
| |
| public void killReadCache(LocationIdentity identity, int index) { |
| Iterator<Map.Entry<ReadCacheEntry, ValueNode>> iter = readCache.entrySet().iterator(); |
| while (iter.hasNext()) { |
| ReadCacheEntry entry = iter.next().getKey(); |
| if (entry.identity.equals(identity) && (index == -1 || entry.index == -1 || index == entry.index)) { |
| iter.remove(); |
| } |
| } |
| } |
| |
| public Map<ReadCacheEntry, ValueNode> getReadCache() { |
| return readCache; |
| } |
| } |