1 /* 2 * Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 25 package org.graalvm.compiler.hotspot.nodes; 26 27 import static org.graalvm.compiler.core.common.NumUtil.roundUp; 28 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_2; 29 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1; 30 31 import org.graalvm.compiler.core.common.type.StampFactory; 32 import org.graalvm.compiler.graph.NodeClass; 33 import org.graalvm.compiler.lir.VirtualStackSlot; 34 import org.graalvm.compiler.lir.gen.LIRGeneratorTool; 35 import org.graalvm.compiler.nodeinfo.NodeInfo; 36 import org.graalvm.compiler.nodes.FixedWithNextNode; 37 import org.graalvm.compiler.nodes.spi.LIRLowerable; 38 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; 39 import org.graalvm.compiler.word.Word; 40 import org.graalvm.compiler.word.WordTypes; 41 42 import jdk.vm.ci.meta.Value; 43 44 /** 45 * Intrinsic for allocating an on-stack array of integers to hold the dimensions of a multianewarray 46 * instruction. 47 */ 48 @NodeInfo(cycles = CYCLES_2, size = SIZE_1) 49 public final class DimensionsNode extends FixedWithNextNode implements LIRLowerable { 50 51 public static final NodeClass<DimensionsNode> TYPE = NodeClass.create(DimensionsNode.class); 52 protected final int rank; 53 54 public DimensionsNode(@InjectedNodeParameter WordTypes wordTypes, int rank) { 55 super(TYPE, StampFactory.forKind(wordTypes.getWordKind())); 56 this.rank = rank; 57 } 58 59 @Override 60 public void generate(NodeLIRBuilderTool gen) { 61 LIRGeneratorTool lirGen = gen.getLIRGeneratorTool(); 62 int size = rank * 4; 63 int wordSize = lirGen.target().wordSize; 64 int slots = roundUp(size, wordSize) / wordSize; 65 VirtualStackSlot array = lirGen.allocateStackSlots(slots); 66 Value result = lirGen.emitAddress(array); 67 gen.setResult(this, result); 68 } 69 70 @NodeIntrinsic 71 public static native Word allocaDimsArray(@ConstantNodeParameter int rank); 72 }