Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/CompositeValueClassSubstitutions.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> |
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date | Mon, 25 Aug 2014 13:45:12 +0200 |
parents | 06c15e88d383 |
children | 45b45f902bed |
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/* * Copyright (c) 2011, 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.compiler.common.GraalOptions.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.api.replacements.*; import com.oracle.graal.hotspot.meta.*; import com.oracle.graal.lir.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.replacements.nodes.*; /** * Substitutions for improving the performance of {@link CompositeValueClass#getClass()}. */ @ClassSubstitution(CompositeValueClass.class) public class CompositeValueClassSubstitutions { /** * A macro node for calls to {@link CompositeValueClass#get(Class)}. It can use the compiler's * knowledge about node classes to replace itself with a constant value for a constant * {@link Class} parameter. */ @NodeInfo public static class CompositeValueClassGetNode extends PureFunctionMacroNode { public static CompositeValueClassGetNode create(Invoke invoke) { return USE_GENERATED_NODES ? new CompositeValueClassSubstitutions_CompositeValueClassGetNodeGen(invoke) : new CompositeValueClassGetNode(invoke); } protected CompositeValueClassGetNode(Invoke invoke) { super(invoke); } @SuppressWarnings("unchecked") @Override protected Constant evaluate(Constant param, MetaAccessProvider metaAccess) { if (param.isNull() || ImmutableCode.getValue()) { return null; } return HotSpotObjectConstant.forObject(CompositeValueClass.get((Class<? extends CompositeValue>) HotSpotObjectConstant.asObject(param))); } } @MacroSubstitution(isStatic = true, forced = true, macro = CompositeValueClassGetNode.class) private static native CompositeValueClass get(Class<?> c); }