1 /* 2 * Copyright (c) 2009, 2016, 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 package org.graalvm.compiler.nodes.memory; 24 25 import org.graalvm.compiler.core.common.LocationIdentity; 26 import org.graalvm.compiler.core.common.type.StampFactory; 27 import org.graalvm.compiler.graph.NodeClass; 28 import org.graalvm.compiler.graph.NodeInputList; 29 import org.graalvm.compiler.nodeinfo.InputType; 30 import org.graalvm.compiler.nodeinfo.NodeInfo; 31 import org.graalvm.compiler.nodes.AbstractMergeNode; 32 import org.graalvm.compiler.nodes.PhiNode; 33 import org.graalvm.compiler.nodes.ValueNode; 34 35 /** 36 * Memory {@code PhiNode}s merge memory dependencies at control flow merges. 37 */ 38 @NodeInfo(nameTemplate = "Phi({i#values}) {p#locationIdentity/s}", allowedUsageTypes = {InputType.Memory}) 39 public final class MemoryPhiNode extends PhiNode implements MemoryNode { 40 41 public static final NodeClass<MemoryPhiNode> TYPE = NodeClass.create(MemoryPhiNode.class); 42 @Input(InputType.Memory) NodeInputList<ValueNode> values; 43 protected final LocationIdentity locationIdentity; 44 45 public MemoryPhiNode(AbstractMergeNode merge, LocationIdentity locationIdentity) { 46 super(TYPE, StampFactory.forVoid(), merge); 47 this.locationIdentity = locationIdentity; 48 this.values = new NodeInputList<>(this); 49 } 50 51 public MemoryPhiNode(AbstractMergeNode merge, LocationIdentity locationIdentity, ValueNode[] values) { 52 super(TYPE, StampFactory.forVoid(), merge); 53 this.locationIdentity = locationIdentity; 54 this.values = new NodeInputList<>(this, values); 55 } 56 57 public LocationIdentity getLocationIdentity() { 58 return locationIdentity; 59 } 60 61 @Override 62 public NodeInputList<ValueNode> values() { 63 return values; 64 } 65 }