Mercurial > hg > truffle
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/ObjectGetClassNode.java @ 11881:da9db8331658
moved Canonicalizable and Simplifiable to the com.oracle.graal.graph project (GRAAL-506)
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 01 Oct 2013 20:38:25 +0200 |
parents | 9a747d8e0d0f |
children | 51059863da73 |
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/* * Copyright (c) 2013, 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.hotspot.replacements; import static com.oracle.graal.phases.GraalOptions.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.api.meta.ResolvedJavaType.Representation; import com.oracle.graal.graph.*; import com.oracle.graal.graph.spi.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; import com.oracle.graal.replacements.nodes.*; /** * This macro node will replace itself with the correct Java {@link Class} as soon as the object's * type is known (exact). */ public class ObjectGetClassNode extends MacroNode implements Virtualizable, Canonicalizable { public ObjectGetClassNode(Invoke invoke) { super(invoke); } private ValueNode getObject() { return arguments.get(0); } @Override public void virtualize(VirtualizerTool tool) { if (AOTCompilation.getValue()) { return; } State state = tool.getObjectState(getObject()); if (state != null) { Constant clazz = state.getVirtualObject().type().getEncoding(Representation.JavaClass); tool.replaceWithValue(ConstantNode.forConstant(clazz, tool.getMetaAccessProvider(), graph())); } } public Node canonical(CanonicalizerTool tool) { if (AOTCompilation.getValue()) { return this; } if (usages().isEmpty()) { return null; } else { Stamp stamp = getObject().stamp(); if (stamp instanceof ObjectStamp) { ObjectStamp objectStamp = (ObjectStamp) stamp; if (objectStamp.isExactType()) { Constant clazz = objectStamp.type().getEncoding(Representation.JavaClass); return ConstantNode.forConstant(clazz, tool.runtime(), graph()); } } return this; } } }