Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/ClassGetSuperclassNode.java @ 18998:ec0733b5a90a
Allow final modifier on node subclasses and start adding the modifier to leaf classes.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Wed, 28 Jan 2015 02:34:14 +0100 |
parents | f57d86eb036f |
children | 60ec7b23b7af |
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/* * Copyright (c) 2013, 2014, 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.nodes; import com.oracle.graal.api.meta.*; import com.oracle.graal.graph.*; import com.oracle.graal.graph.spi.*; import com.oracle.graal.hotspot.meta.*; import com.oracle.graal.hotspot.replacements.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; import com.oracle.graal.replacements.nodes.*; /** * {@link MacroNode Macro node} for {@link Class#getSuperclass()}. * * @see ClassSubstitutions#getSuperclass(Class) */ @NodeInfo public final class ClassGetSuperclassNode extends MacroNode implements Canonicalizable { public ClassGetSuperclassNode(Invoke invoke) { super(invoke); } private ValueNode getJavaClass() { return arguments.get(0); } @Override public Node canonical(CanonicalizerTool tool) { ValueNode javaClass = getJavaClass(); if (javaClass.isConstant()) { HotSpotObjectConstant c = (HotSpotObjectConstant) javaClass.asConstant(); JavaConstant superclass = c.getSuperclass(); if (superclass != null) { return ConstantNode.forConstant(superclass, tool.getMetaAccess()); } } return this; } }