Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/HotSpotNodeSubstitutions.java @ 18380:ed0fce2e999a
Fold klass._java_mirror._klass into klass and improve stamps from layout_helper
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Fri, 14 Nov 2014 09:32:59 -0800 |
parents | ea0fbb571466 |
children | e7ab82e7cc37 |
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/* * Copyright (c) 2011, 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.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. As long as NodeClass // is final, the stamp of the PiNode below will automatically be exact. TypePointer klass = loadHub(node); return piCastNonNull(Word.fromTypePointer(klass).readObject(Word.signed(instanceKlassNodeClassOffset()), KLASS_NODE_CLASS), NodeClass.class); } }