Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/NodeClassSubstitutions.java @ 11255:fe5ce6520b6c
macro node for NodeClass.get(Class)
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Wed, 07 Aug 2013 18:36:15 +0200 |
parents | 5d3fa6f949fb |
children | 27a415148090 |
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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.replacements; import com.oracle.graal.api.meta.*; import com.oracle.graal.api.replacements.*; import com.oracle.graal.graph.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.extended.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.replacements.nodes.*; /** * Substitutions for improving the performance of some critical methods in {@link NodeClass} * methods. These substitutions improve the performance by forcing the relevant methods to be * inlined (intrinsification being a special form of inlining) and removing a checked cast. The * latter cannot be done directly in Java code as {@link UnsafeCastNode} is not available to the * project containing {@link NodeClass}. */ @ClassSubstitution(NodeClass.class) public class NodeClassSubstitutions { /** * A macro node for calls to {@link NodeClass#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. */ public static class NodeClassGetNode extends PureFunctionMacroNode { public NodeClassGetNode(Invoke invoke) { super(invoke); } @Override protected Constant evaluate(Constant param, MetaAccessProvider metaAccess) { return Constant.forObject(NodeClass.get((Class<?>) param.asObject())); } } @MacroSubstitution(isStatic = true, forced = true, macro = NodeClassGetNode.class) private static native NodeClass get(Class<?> c); @MethodSubstitution private static Node getNode(Node node, long offset) { return UnsafeCastNode.unsafeCast(UnsafeLoadNode.load(node, 0, offset, Kind.Object), Node.class, false, false); } @MethodSubstitution private static NodeList getNodeList(Node node, long offset) { return UnsafeCastNode.unsafeCast(UnsafeLoadNode.load(node, 0, offset, Kind.Object), NodeList.class, false, false); } @MethodSubstitution private static void putNode(Node node, long offset, Node value) { UnsafeStoreNode.store(node, 0, offset, value, Kind.Object); } @MethodSubstitution private static void putNodeList(Node node, long offset, NodeList value) { UnsafeStoreNode.store(node, 0, offset, value, Kind.Object); } }