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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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
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 *
 * 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.
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package org.graalvm.compiler.hotspot.nodes;

import static org.graalvm.compiler.asm.NumUtil.roundUp;
import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_2;
import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1;

import java.util.BitSet;

import org.graalvm.compiler.core.common.type.StampFactory;
import org.graalvm.compiler.graph.NodeClass;
import org.graalvm.compiler.lir.VirtualStackSlot;
import org.graalvm.compiler.lir.gen.LIRGeneratorTool;
import org.graalvm.compiler.nodeinfo.NodeInfo;
import org.graalvm.compiler.nodes.FixedWithNextNode;
import org.graalvm.compiler.nodes.spi.LIRLowerable;
import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
import org.graalvm.compiler.word.Word;
import org.graalvm.compiler.word.WordTypes;

import jdk.vm.ci.meta.Value;

Intrinsic for allocating an on-stack array of integers to hold the dimensions of a multianewarray instruction.
/** * Intrinsic for allocating an on-stack array of integers to hold the dimensions of a multianewarray * instruction. */
@NodeInfo(cycles = CYCLES_2, size = SIZE_1) public final class DimensionsNode extends FixedWithNextNode implements LIRLowerable { public static final NodeClass<DimensionsNode> TYPE = NodeClass.create(DimensionsNode.class); protected final int rank; public DimensionsNode(@InjectedNodeParameter WordTypes wordTypes, int rank) { super(TYPE, StampFactory.forKind(wordTypes.getWordKind())); this.rank = rank; } @Override public void generate(NodeLIRBuilderTool gen) { LIRGeneratorTool lirGen = gen.getLIRGeneratorTool(); int size = rank * 4; int wordSize = lirGen.target().wordSize; int slots = roundUp(size, wordSize) / wordSize; VirtualStackSlot array = lirGen.getResult().getFrameMapBuilder().allocateStackSlots(slots, new BitSet(0), null); Value result = lirGen.emitAddress(array); gen.setResult(this, result); } @NodeIntrinsic public static native Word allocaDimsArray(@ConstantNodeParameter int rank); }