Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/IndexedLocationNode.java @ 9203:f78437ffb8d3
Restructure class hierarchy of LocationNode.
author | Roland Schatz <roland.schatz@oracle.com> |
---|---|
date | Mon, 22 Apr 2013 10:30:06 +0200 |
parents | 2c0c708a0ad6 |
children | 589e140a7f1c |
line wrap: on
line source
/* * 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.graal.api.meta.*; import com.oracle.graal.graph.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; /** * Location node that has a displacement and a scaled index. Can represent locations in the form of * [base + index * scale + disp] where base and index are nodes and scale and disp are integer * constants. */ @NodeInfo(nameTemplate = "IdxLoc {p#locationIdentity/s}") public final class IndexedLocationNode extends LocationNode implements Canonicalizable { @Input private ValueNode index; private final int displacement; private final int indexScaling; /** * Gets the index or offset of this location. */ public ValueNode index() { return index; } /** * @return Constant that is used to scale the index. */ public int indexScaling() { return indexScaling; } public static IndexedLocationNode create(Object identity, Kind kind, int displacement, ValueNode index, Graph graph, int indexScaling) { return graph.unique(new IndexedLocationNode(identity, kind, index, displacement, indexScaling)); } private IndexedLocationNode(Object identity, Kind kind, ValueNode index, int displacement, int indexScaling) { super(identity, kind); this.index = index; this.displacement = displacement; this.indexScaling = indexScaling; } @Override public ValueNode canonical(CanonicalizerTool tool) { Constant constantIndex = index.asConstant(); if (constantIndex != null) { long constantIndexLong = constantIndex.asLong(); constantIndexLong *= indexScaling; constantIndexLong += displacement; int constantIndexInt = (int) constantIndexLong; if (constantIndexLong == constantIndexInt) { return ConstantLocationNode.create(locationIdentity(), getValueKind(), constantIndexInt, graph()); } } return this; } @Override public Value generateLea(LIRGeneratorTool gen, Value base) { return gen.emitLea(base, displacement, gen.operand(index()), indexScaling()); } @Override public Value generateLoad(LIRGeneratorTool gen, Value base, DeoptimizingNode deopting) { return gen.emitLoad(getValueKind(), base, displacement, gen.operand(index()), indexScaling(), deopting); } @Override public void generateStore(LIRGeneratorTool gen, Value base, Value value, DeoptimizingNode deopting) { gen.emitStore(getValueKind(), base, displacement, gen.operand(index()), indexScaling(), value, deopting); } }