Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/ClassGetClassLoader0Node.java @ 16919:0fe4732e5181
made use of generated Node classes predicated on value of graal.useGeneratedNodes system property (default is false)
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Mon, 25 Aug 2014 13:45:12 +0200 |
parents | 06c15e88d383 |
children | 45b45f902bed |
line wrap: on
line source
/* * Copyright (c) 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.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#getClassLoader0()}. * * @see ClassSubstitutions#getClassLoader0(Class) */ @SuppressWarnings("javadoc") @NodeInfo public class ClassGetClassLoader0Node extends MacroStateSplitNode implements Canonicalizable { public static ClassGetClassLoader0Node create(Invoke invoke) { return USE_GENERATED_NODES ? new ClassGetClassLoader0NodeGen(invoke) : new ClassGetClassLoader0Node(invoke); } protected ClassGetClassLoader0Node(Invoke invoke) { super(invoke); } private ValueNode getJavaClass() { return arguments.get(0); } @Override public Node canonical(CanonicalizerTool tool) { ValueNode javaClass = getJavaClass(); if (javaClass.isConstant()) { Class<?> c = (Class<?>) HotSpotObjectConstant.asObject(javaClass.asConstant()); if (c != null) { /* * This is an intrinsic for getClassLoader0, which occurs after any security checks. * We can't call that directly so just call getClassLoader. */ ClassLoader classLoader = c.getClassLoader(); return ConstantNode.forConstant(HotSpotObjectConstant.forObject(classLoader), tool.getMetaAccess()); } } return this; } }