| /* |
| * Copyright (c) 2012, 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 org.graalvm.compiler.nodes; |
| |
| import org.graalvm.compiler.core.common.type.StampFactory; |
| import org.graalvm.compiler.graph.Node; |
| import org.graalvm.compiler.graph.NodeClass; |
| import org.graalvm.compiler.graph.spi.Canonicalizable; |
| import org.graalvm.compiler.graph.spi.CanonicalizerTool; |
| import org.graalvm.compiler.nodeinfo.InputType; |
| import org.graalvm.compiler.nodeinfo.NodeInfo; |
| import org.graalvm.compiler.nodes.extended.GuardingNode; |
| import org.graalvm.compiler.nodes.spi.LIRLowerable; |
| import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool; |
| import org.graalvm.compiler.nodes.spi.Proxy; |
| |
| @NodeInfo(allowedUsageTypes = {InputType.Guard}, nameTemplate = "Proxy({i#value})") |
| public final class GuardProxyNode extends ProxyNode implements GuardingNode, Proxy, LIRLowerable, Canonicalizable { |
| |
| public static final NodeClass<GuardProxyNode> TYPE = NodeClass.create(GuardProxyNode.class); |
| @OptionalInput(InputType.Guard) GuardingNode value; |
| |
| public GuardProxyNode(GuardingNode value, LoopExitNode proxyPoint) { |
| super(TYPE, StampFactory.forVoid(), proxyPoint); |
| this.value = value; |
| } |
| |
| @Override |
| public void generate(NodeLIRBuilderTool generator) { |
| } |
| |
| public void setValue(GuardingNode newValue) { |
| this.updateUsages(value.asNode(), newValue.asNode()); |
| this.value = newValue; |
| } |
| |
| @Override |
| public ValueNode value() { |
| return (value == null ? null : value.asNode()); |
| } |
| |
| @Override |
| public Node getOriginalNode() { |
| return (value == null ? null : value.asNode()); |
| } |
| |
| @Override |
| public Node canonical(CanonicalizerTool tool) { |
| if (value == null) { |
| return null; |
| } |
| return this; |
| } |
| } |