Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/LoadMethodNode.java @ 19526:8fc336a04d77
Create TYPE fields for LIRInstruction and CompositeValue. Renaming NodeClass#get to NodeClass#create.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Fri, 20 Feb 2015 22:22:55 +0100 |
parents | 61d3cb8e1280 |
children | 3362ba500371 |
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/* * 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 com.oracle.graal.nodes.extended; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.graph.*; import com.oracle.graal.graph.spi.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; /** * Loads a method from the virtual method table of a given hub. */ @NodeInfo public final class LoadMethodNode extends FixedWithNextNode implements Lowerable, Canonicalizable { public static final NodeClass<LoadMethodNode> TYPE = NodeClass.create(LoadMethodNode.class); @Input ValueNode hub; protected final ResolvedJavaMethod method; protected final ResolvedJavaType receiverType; public ValueNode getHub() { return hub; } public LoadMethodNode(@InjectedNodeParameter Stamp stamp, ResolvedJavaMethod method, ResolvedJavaType receiverType, ValueNode hub) { super(TYPE, stamp); this.receiverType = receiverType; this.hub = hub; this.method = method; assert method.isConcrete() : "Cannot load abstract method from a hub"; assert method.hasReceiver() : "Cannot load a static method from a hub"; assert method.isInVirtualMethodTable(receiverType); } @Override public void lower(LoweringTool tool) { tool.getLowerer().lower(this, tool); } @Override public Node canonical(CanonicalizerTool tool) { if (hub instanceof LoadHubNode) { ValueNode object = ((LoadHubNode) hub).getValue(); ResolvedJavaType type = StampTool.typeOrNull(object); if (StampTool.isExactType(object)) { return resolveExactMethod(tool, type); } Assumptions assumptions = graph().getAssumptions(); if (type != null && assumptions != null) { ResolvedJavaMethod resolvedMethod = type.findUniqueConcreteMethod(method); if (resolvedMethod != null && !type.isInterface() && method.getDeclaringClass().isAssignableFrom(type)) { assumptions.recordConcreteMethod(method, type, resolvedMethod); return ConstantNode.forConstant(stamp(), resolvedMethod.getEncoding(), tool.getMetaAccess()); } } } if (hub.isConstant()) { return resolveExactMethod(tool, tool.getConstantReflection().asJavaType(hub.asConstant())); } return this; } /** * Find the method which would be loaded. * * @param tool * @param type the exact type of object being loaded from * @return the method which would be invoked for {@code type} or null if it doesn't implement * the method */ private Node resolveExactMethod(CanonicalizerTool tool, ResolvedJavaType type) { ResolvedJavaMethod newMethod = type.resolveConcreteMethod(method, type); if (newMethod == null) { /* * This really represent a misuse of LoadMethod since we're loading from a class which * isn't known to implement the original method but for now at least fold it away. */ return ConstantNode.forConstant(JavaConstant.NULL_POINTER, null); } else { return ConstantNode.forConstant(stamp(), newMethod.getEncoding(), tool.getMetaAccess()); } } public ResolvedJavaMethod getMethod() { return method; } public ResolvedJavaType getReceiverType() { return receiverType; } }