| /* |
| * 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 org.graalvm.compiler.core.common.type.StampFactory; |
| 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.ConstantNode; |
| import org.graalvm.compiler.nodes.FixedWithNextNode; |
| import org.graalvm.compiler.nodes.ValueNode; |
| import org.graalvm.compiler.nodes.spi.Lowerable; |
| import org.graalvm.compiler.nodes.spi.LoweringTool; |
| import org.graalvm.compiler.nodes.spi.Virtualizable; |
| import org.graalvm.compiler.nodes.spi.VirtualizerTool; |
| import org.graalvm.compiler.nodes.type.StampTool; |
| import org.graalvm.compiler.nodes.virtual.VirtualObjectNode; |
| |
| import jdk.vm.ci.meta.ConstantReflectionProvider; |
| import jdk.vm.ci.meta.JavaConstant; |
| import jdk.vm.ci.meta.JavaKind; |
| import jdk.vm.ci.meta.MetaAccessProvider; |
| import jdk.vm.ci.meta.ResolvedJavaType; |
| |
| @NodeInfo(cycles = CYCLES_100, size = SIZE_50) |
| public final class UnboxNode extends FixedWithNextNode implements Virtualizable, Lowerable, Canonicalizable.Unary<ValueNode> { |
| |
| public static final NodeClass<UnboxNode> TYPE = NodeClass.create(UnboxNode.class); |
| @Input protected ValueNode value; |
| protected final JavaKind boxingKind; |
| |
| @Override |
| public ValueNode getValue() { |
| return value; |
| } |
| |
| public UnboxNode(ValueNode value, JavaKind boxingKind) { |
| super(TYPE, StampFactory.forKind(boxingKind.getStackKind())); |
| this.value = value; |
| this.boxingKind = boxingKind; |
| } |
| |
| public static ValueNode create(MetaAccessProvider metaAccess, ConstantReflectionProvider constantReflection, ValueNode value, JavaKind boxingKind) { |
| ValueNode synonym = findSynonym(metaAccess, constantReflection, value, boxingKind); |
| if (synonym != null) { |
| return synonym; |
| } |
| return new UnboxNode(value, boxingKind); |
| } |
| |
| public JavaKind getBoxingKind() { |
| return boxingKind; |
| } |
| |
| @Override |
| public void lower(LoweringTool tool) { |
| tool.getLowerer().lower(this, tool); |
| } |
| |
| @Override |
| public void virtualize(VirtualizerTool tool) { |
| ValueNode alias = tool.getAlias(getValue()); |
| if (alias instanceof VirtualObjectNode) { |
| VirtualObjectNode virtual = (VirtualObjectNode) alias; |
| ResolvedJavaType objectType = virtual.type(); |
| ResolvedJavaType expectedType = tool.getMetaAccessProvider().lookupJavaType(boxingKind.toBoxedJavaClass()); |
| if (objectType.equals(expectedType)) { |
| tool.replaceWithValue(tool.getEntry(virtual, 0)); |
| } |
| } |
| } |
| |
| @Override |
| public ValueNode canonical(CanonicalizerTool tool, ValueNode forValue) { |
| if (tool.allUsagesAvailable() && hasNoUsages() && StampTool.isPointerNonNull(forValue)) { |
| return null; |
| } |
| ValueNode synonym = findSynonym(tool.getMetaAccess(), tool.getConstantReflection(), forValue, boxingKind); |
| if (synonym != null) { |
| return synonym; |
| } |
| return this; |
| } |
| |
| private static ValueNode findSynonym(MetaAccessProvider metaAccess, ConstantReflectionProvider constantReflection, ValueNode forValue, JavaKind boxingKind) { |
| if (forValue.isConstant()) { |
| JavaConstant constant = forValue.asJavaConstant(); |
| JavaConstant unboxed = constantReflection.unboxPrimitive(constant); |
| if (unboxed != null && unboxed.getJavaKind() == boxingKind) { |
| return ConstantNode.forConstant(unboxed, metaAccess); |
| } |
| } else if (forValue instanceof BoxNode) { |
| BoxNode box = (BoxNode) forValue; |
| if (boxingKind == box.getBoxingKind()) { |
| return box.getValue(); |
| } |
| } |
| return null; |
| } |
| } |