| /* |
| * Copyright (c) 2013, 2015, 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 org.graalvm.compiler.nodes.extended; |
| |
| import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_100; |
| import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_50; |
| |
| import java.util.Collections; |
| |
| import org.graalvm.compiler.core.common.type.StampFactory; |
| import org.graalvm.compiler.core.common.type.TypeReference; |
| import org.graalvm.compiler.graph.NodeClass; |
| import org.graalvm.compiler.graph.spi.Canonicalizable; |
| import org.graalvm.compiler.graph.spi.CanonicalizerTool; |
| import org.graalvm.compiler.nodeinfo.NodeInfo; |
| import org.graalvm.compiler.nodes.FixedWithNextNode; |
| import org.graalvm.compiler.nodes.ValueNode; |
| import org.graalvm.compiler.nodes.java.MonitorIdNode; |
| import org.graalvm.compiler.nodes.spi.Lowerable; |
| import org.graalvm.compiler.nodes.spi.LoweringTool; |
| import org.graalvm.compiler.nodes.spi.VirtualizableAllocation; |
| import org.graalvm.compiler.nodes.spi.VirtualizerTool; |
| import org.graalvm.compiler.nodes.type.StampTool; |
| import org.graalvm.compiler.nodes.virtual.VirtualBoxingNode; |
| |
| import jdk.vm.ci.meta.JavaKind; |
| import jdk.vm.ci.meta.ResolvedJavaType; |
| |
| /** |
| * This node represents the boxing of a primitive value. This corresponds to a call to the valueOf |
| * methods in Integer, Long, etc. |
| */ |
| @NodeInfo(cycles = CYCLES_100, size = SIZE_50) |
| public class BoxNode extends FixedWithNextNode implements VirtualizableAllocation, Lowerable, Canonicalizable.Unary<ValueNode> { |
| |
| public static final NodeClass<BoxNode> TYPE = NodeClass.create(BoxNode.class); |
| @Input private ValueNode value; |
| protected final JavaKind boxingKind; |
| |
| public BoxNode(ValueNode value, ResolvedJavaType resultType, JavaKind boxingKind) { |
| this(TYPE, value, resultType, boxingKind); |
| } |
| |
| public BoxNode(NodeClass<? extends BoxNode> c, ValueNode value, ResolvedJavaType resultType, JavaKind boxingKind) { |
| super(c, StampFactory.objectNonNull(TypeReference.createExactTrusted(resultType))); |
| this.value = value; |
| this.boxingKind = boxingKind; |
| } |
| |
| public JavaKind getBoxingKind() { |
| return boxingKind; |
| } |
| |
| @Override |
| public ValueNode getValue() { |
| return value; |
| } |
| |
| @Override |
| public void lower(LoweringTool tool) { |
| tool.getLowerer().lower(this, tool); |
| } |
| |
| @Override |
| public ValueNode canonical(CanonicalizerTool tool, ValueNode forValue) { |
| if (tool.allUsagesAvailable() && hasNoUsages()) { |
| return null; |
| } |
| return this; |
| } |
| |
| protected VirtualBoxingNode createVirtualBoxingNode() { |
| return new VirtualBoxingNode(StampTool.typeOrNull(stamp()), boxingKind); |
| } |
| |
| @Override |
| public void virtualize(VirtualizerTool tool) { |
| ValueNode alias = tool.getAlias(getValue()); |
| |
| VirtualBoxingNode newVirtual = createVirtualBoxingNode(); |
| assert newVirtual.getFields().length == 1; |
| |
| tool.createVirtualObject(newVirtual, new ValueNode[]{alias}, Collections.<MonitorIdNode> emptyList(), false); |
| tool.replaceWithVirtual(newVirtual); |
| } |
| } |