1 /* 2 * Copyright (c) 2012, 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 24 25 package org.graalvm.compiler.nodes; 26 27 import static org.graalvm.compiler.nodeinfo.InputType.Memory; 28 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_0; 29 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_0; 30 31 import org.graalvm.compiler.graph.NodeClass; 32 import org.graalvm.compiler.nodeinfo.NodeInfo; 33 import org.graalvm.compiler.nodes.memory.MemoryCheckpoint; 34 import jdk.internal.vm.compiler.word.LocationIdentity; 35 36 /** 37 * The start node of a graph. 38 */ 39 @NodeInfo(allowedUsageTypes = {Memory}, nameTemplate = "Start", cycles = CYCLES_0, size = SIZE_0) 40 public class StartNode extends BeginStateSplitNode implements MemoryCheckpoint.Single { 41 public static final NodeClass<StartNode> TYPE = NodeClass.create(StartNode.class); 42 StartNode(NodeClass<? extends StartNode> c)43 protected StartNode(NodeClass<? extends StartNode> c) { 44 super(c); 45 } 46 StartNode()47 public StartNode() { 48 super(TYPE); 49 } 50 51 @Override getLocationIdentity()52 public LocationIdentity getLocationIdentity() { 53 return LocationIdentity.any(); 54 } 55 } 56