1 /* 2 * Copyright (c) 2009, 2011, 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.virtual; 24 25 import static org.graalvm.compiler.nodeinfo.InputType.Extension; 26 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_0; 27 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_0; 28 29 import org.graalvm.compiler.core.common.type.StampFactory; 30 import org.graalvm.compiler.core.common.type.TypeReference; 31 import org.graalvm.compiler.graph.NodeClass; 32 import org.graalvm.compiler.nodeinfo.NodeInfo; 33 import org.graalvm.compiler.nodes.ValueNode; 34 import org.graalvm.compiler.nodes.calc.FloatingNode; 35 import org.graalvm.compiler.nodes.spi.ArrayLengthProvider; 36 import org.graalvm.compiler.nodes.spi.Virtualizable; 37 import org.graalvm.compiler.nodes.spi.VirtualizerTool; 38 39 /** 40 * Selects one object from a {@link CommitAllocationNode}. The object is identified by its 41 * {@link VirtualObjectNode}. 42 */ 43 @NodeInfo(cycles = CYCLES_0, size = SIZE_0) 44 public final class AllocatedObjectNode extends FloatingNode implements Virtualizable, ArrayLengthProvider { 45 46 public static final NodeClass<AllocatedObjectNode> TYPE = NodeClass.create(AllocatedObjectNode.class); 47 @Input VirtualObjectNode virtualObject; 48 @Input(Extension) CommitAllocationNode commit; 49 50 public AllocatedObjectNode(VirtualObjectNode virtualObject) { 51 super(TYPE, StampFactory.objectNonNull(TypeReference.createExactTrusted(virtualObject.type()))); 52 this.virtualObject = virtualObject; 53 } 54 55 public VirtualObjectNode getVirtualObject() { 56 return virtualObject; 57 } 58 59 public CommitAllocationNode getCommit() { 60 return commit; 61 } 62 63 public void setCommit(CommitAllocationNode x) { 64 updateUsages(commit, x); 65 commit = x; 66 } 67 68 @Override 69 public void virtualize(VirtualizerTool tool) { 70 tool.replaceWithVirtual(getVirtualObject()); 71 } 72 73 @Override 74 public ValueNode length() { 75 if (virtualObject instanceof ArrayLengthProvider) { 76 return ((ArrayLengthProvider) virtualObject).length(); 77 } 78 return null; 79 } 80 }