1 /* 2 * Copyright (c) 2013, 2015, 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.extended; 24 25 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_UNKNOWN; 26 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_UNKNOWN; 27 28 import org.graalvm.compiler.core.common.type.Stamp; 29 import org.graalvm.compiler.graph.NodeClass; 30 import org.graalvm.compiler.nodeinfo.NodeInfo; 31 import org.graalvm.compiler.nodes.ValueNode; 32 import org.graalvm.compiler.nodes.memory.AbstractMemoryCheckpoint; 33 34 /** 35 * Base class for nodes that modify a range of an array. 36 */ 37 @NodeInfo(cycles = CYCLES_UNKNOWN, size = SIZE_UNKNOWN) 38 public abstract class ArrayRangeWriteNode extends AbstractMemoryCheckpoint { 39 40 public static final NodeClass<ArrayRangeWriteNode> TYPE = NodeClass.create(ArrayRangeWriteNode.class); 41 42 protected ArrayRangeWriteNode(NodeClass<? extends ArrayRangeWriteNode> c, Stamp stamp) { 43 super(c, stamp); 44 } 45 46 /** 47 * The array that is written to. 48 */ 49 public abstract ValueNode getArray(); 50 51 /** 52 * The first modified index. 53 */ 54 public abstract ValueNode getIndex(); 55 56 /** 57 * The length of the modified range. 58 */ 59 public abstract ValueNode getLength(); 60 61 /** 62 * Return true if the written array is an object array, false if it is a primitive array. 63 */ 64 public abstract boolean isObjectArray(); 65 66 /** 67 * Returns whether this write is the initialization of the written location. If it is true, the 68 * old value of the memory location is either uninitialized or zero. If it is false, the memory 69 * location is guaranteed to contain a valid value or zero. 70 */ 71 public abstract boolean isInitialization(); 72 }