Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/HotSpotNodeSubstitutions.java @ 15106:6876a4599b7e
create NodeClass for each Node subclass during class initialization of the latter
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 15 Apr 2014 13:34:29 +0200 |
parents | 4df6d7c966a2 |
children | f4c5498fdf4c |
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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.hotspot.replacements.HotSpotReplacementsUtil.*; import static com.oracle.graal.nodes.PiNode.*; import com.oracle.graal.api.replacements.*; import com.oracle.graal.graph.*; import com.oracle.graal.word.*; @ClassSubstitution(Node.class) public class HotSpotNodeSubstitutions { /** * Gets the value of the {@code InstanceKlass::_graal_node_class} field from the InstanceKlass * pointed to by {@code node}'s header. */ @MethodSubstitution(isStatic = false) public static NodeClass getNodeClass(final Node node) { // HotSpot creates the NodeClass for each Node subclass while initializing it // so we are guaranteed to read a non-null value here. The fact that NodeClass // is final will automatically make the stamp of the PiNode exact. Word klass = loadHub(node); return piCastNonNull(klass.readObject(Word.signed(klassNodeClassOffset()), KLASS_NODE_CLASS), NodeClass.class); } }