Mercurial > hg > graal-compiler
view graal/com.oracle.max.graal.nodes/src/com/oracle/graal/nodes/extended/IndexedLocationNode.java @ 5060:4ed4295ce15f
Update import statements.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Thu, 08 Mar 2012 19:11:12 +0100 |
parents | ed559a528128 |
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/* * Copyright (c) 2011, 2012, 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.extended; import com.oracle.max.cri.ci.*; import com.oracle.graal.graph.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; public final class IndexedLocationNode extends LocationNode implements LIRLowerable, Canonicalizable { @Input private ValueNode index; @Data private boolean indexScalingEnabled; public ValueNode index() { return index; } public static Object getArrayLocation(CiKind elementKind) { return elementKind; } /** * @return whether scaling of the index by the value kind's size is enabled (the default) or disabled. */ public boolean indexScalingEnabled() { return indexScalingEnabled; } /** * Enables or disables scaling of the index by the value kind's size. Has no effect if the index input is not used. */ public void setIndexScalingEnabled(boolean enable) { this.indexScalingEnabled = enable; } public static IndexedLocationNode create(Object identity, CiKind kind, int displacement, ValueNode index, Graph graph) { return create(identity, kind, displacement, index, graph, true); } public static IndexedLocationNode create(Object identity, CiKind kind, int displacement, ValueNode index, Graph graph, boolean indexScalingEnabled) { return graph.unique(new IndexedLocationNode(identity, kind, index, displacement, indexScalingEnabled)); } private IndexedLocationNode(Object identity, CiKind kind, ValueNode index, int displacement, boolean indexScalingEnabled) { super(identity, kind, displacement); this.index = index; this.indexScalingEnabled = indexScalingEnabled; } @Override public ValueNode canonical(CanonicalizerTool tool) { CiConstant constantIndex = index.asConstant(); if (constantIndex != null && constantIndex.kind.stackKind().isInt()) { long constantIndexLong = constantIndex.asInt(); if (indexScalingEnabled && tool.target() != null) { constantIndexLong *= tool.target().sizeInBytes(getValueKind()); } constantIndexLong += displacement(); int constantIndexInt = (int) constantIndexLong; if (constantIndexLong == constantIndexInt) { return LocationNode.create(locationIdentity(), getValueKind(), constantIndexInt, graph()); } } return this; } }