/*
 * Copyright (c) 2016, 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.extended;

import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_0;
import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_0;

import org.graalvm.compiler.graph.NodeClass;
import org.graalvm.compiler.nodeinfo.NodeInfo;
import org.graalvm.compiler.nodes.ValueNode;
import org.graalvm.compiler.nodes.java.MonitorEnterNode;
import org.graalvm.compiler.nodes.java.MonitorIdNode;
import org.graalvm.compiler.nodes.spi.LIRLowerable;
import org.graalvm.compiler.nodes.spi.LoweringTool;
import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
import org.graalvm.compiler.nodes.spi.VirtualizerTool;

@NodeInfo(cycles = CYCLES_0, size = SIZE_0)
public class OSRMonitorEnterNode extends MonitorEnterNode implements LIRLowerable {

    public static final NodeClass<OSRMonitorEnterNode> TYPE = NodeClass.create(OSRMonitorEnterNode.class);

    public OSRMonitorEnterNode(ValueNode object, MonitorIdNode monitorId) {
        super(TYPE, object, monitorId);
    }

    @Override
    public void virtualize(VirtualizerTool tool) {
        // OSR Entry cannot be virtualized
    }

    @Override
    public void generate(NodeLIRBuilderTool generator) {
        // Nothing to do
    }

    @Override
    public void lower(LoweringTool tool) {
        /*
         * Nothing to do for OSR compilations with locks the monitor enter operation already
         * happened when we do the compilation.
         */
    }
}
