Mercurial > hg > graal-compiler
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/VirtualState.java @ 18970:edf3a7fdd067
Add utility methods to GuardsStage.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Tue, 27 Jan 2015 14:54:55 +0100 |
parents | cbd42807a31f |
children | e349dfa54db1 |
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/* * Copyright (c) 2012, 2012, 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.nodes; import com.oracle.graal.graph.*; import com.oracle.graal.nodeinfo.*; /** * Base class for nodes that contain "virtual" state, like FrameState and VirtualObjectState. * Subclasses of this class will be treated in a special way by the scheduler. */ @NodeInfo(allowedUsageTypes = {InputType.State}) public abstract class VirtualState extends Node { public interface NodeClosure<T extends Node> { void apply(Node usage, T node); } public interface VirtualClosure { void apply(VirtualState node); } public abstract VirtualState duplicateWithVirtualState(); public abstract void applyToNonVirtual(NodeClosure<? super ValueNode> closure); /** * Performs a <b>pre-order</b> iteration over all elements reachable from this state that are a * subclass of {@link VirtualState}. */ public abstract void applyToVirtual(VirtualClosure closure); public abstract boolean isPartOfThisState(VirtualState state); @Override public final StructuredGraph graph() { return (StructuredGraph) super.graph(); } }