Mercurial > hg > graal-compiler
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/LoadIndexedNode.java @ 7123:b914b9b4c578
graal.graph refactorings
Common out NodeInputsIterable and NodeSuccessorsIterable
Remove NodeUsagesList.size, use .count instead
Change return type of Node.usages to NodeIterable<Node>
author | Gilles Duboscq <duboscq@ssw.jku.at> |
---|---|
date | Mon, 03 Dec 2012 13:53:53 +0100 |
parents | 3656236c7d27 |
children | 94f032472c28 |
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/* * Copyright (c) 2009, 2011, 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 com.oracle.graal.nodes.java; import com.oracle.graal.api.meta.*; import com.oracle.graal.graph.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; import com.oracle.graal.nodes.virtual.*; /** * The {@code LoadIndexedNode} represents a read from an element of an array. */ public final class LoadIndexedNode extends AccessIndexedNode implements Node.IterableNodeType, Virtualizable { /** * Creates a new LoadIndexedNode. * @param array the instruction producing the array * @param index the instruction producing the index * @param elementKind the element type */ public LoadIndexedNode(ValueNode array, ValueNode index, Kind elementKind, long leafGraphId) { super(createStamp(array, elementKind), array, index, elementKind, leafGraphId); } private static Stamp createStamp(ValueNode array, Kind kind) { if (kind == Kind.Object && array.objectStamp().type() != null) { return StampFactory.declared(array.objectStamp().type().getComponentType()); } else { return StampFactory.forKind(kind); } } @Override public void virtualize(VirtualizerTool tool) { VirtualObjectNode virtualArray = tool.getVirtualState(array()); if (virtualArray != null) { ValueNode indexValue = tool.getReplacedValue(index()); int index = indexValue.isConstant() ? indexValue.asConstant().asInt() : -1; if (index >= 0 && index < virtualArray.entryCount()) { ValueNode result = tool.getVirtualEntry(virtualArray, index); VirtualObjectNode virtualResult = tool.getVirtualState(result); if (virtualResult != null) { tool.replaceWithVirtual(virtualResult); } else { tool.replaceWithValue(result); } } } } }