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/*
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* Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package org.graalvm.compiler.hotspot.nodes;
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import static org.graalvm.compiler.core.common.NumUtil.roundUp;
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import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_2;
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import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1;
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import org.graalvm.compiler.core.common.type.StampFactory;
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import org.graalvm.compiler.graph.NodeClass;
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import org.graalvm.compiler.lir.VirtualStackSlot;
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import org.graalvm.compiler.lir.gen.LIRGeneratorTool;
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import org.graalvm.compiler.nodeinfo.NodeInfo;
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import org.graalvm.compiler.nodes.FixedWithNextNode;
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import org.graalvm.compiler.nodes.spi.LIRLowerable;
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import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
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import org.graalvm.compiler.word.Word;
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import org.graalvm.compiler.word.WordTypes;
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import jdk.vm.ci.meta.Value;
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/**
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* Intrinsic for allocating an on-stack array of integers to hold the dimensions of a multianewarray
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* instruction.
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*/
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@NodeInfo(cycles = CYCLES_2, size = SIZE_1)
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public final class DimensionsNode extends FixedWithNextNode implements LIRLowerable {
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public static final NodeClass<DimensionsNode> TYPE = NodeClass.create(DimensionsNode.class);
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protected final int rank;
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public DimensionsNode(@InjectedNodeParameter WordTypes wordTypes, int rank) {
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super(TYPE, StampFactory.forKind(wordTypes.getWordKind()));
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this.rank = rank;
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}
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@Override
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public void generate(NodeLIRBuilderTool gen) {
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LIRGeneratorTool lirGen = gen.getLIRGeneratorTool();
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int size = rank * 4;
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int wordSize = lirGen.target().wordSize;
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int slots = roundUp(size, wordSize) / wordSize;
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VirtualStackSlot array = lirGen.allocateStackSlots(slots);
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Value result = lirGen.emitAddress(array);
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gen.setResult(this, result);
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}
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@NodeIntrinsic
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public static native Word allocaDimsArray(@ConstantNodeParameter int rank);
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}
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