1 /*

     2  * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 

    25 package org.graalvm.compiler.hotspot.nodes;

    26 

    27 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_4;

    28 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_16;

    29 

    30 import org.graalvm.compiler.core.common.type.StampFactory;

    31 import org.graalvm.compiler.graph.NodeClass;

    32 import org.graalvm.compiler.nodeinfo.NodeInfo;

    33 import org.graalvm.compiler.nodes.DeoptimizingFixedWithNextNode;

    34 import org.graalvm.compiler.nodes.ValueNode;

    35 import org.graalvm.compiler.nodes.spi.Lowerable;

    36 import org.graalvm.compiler.nodes.spi.LoweringTool;

    37 

    38 @NodeInfo(cycles = CYCLES_4, size = SIZE_16)

    39 public class KlassBeingInitializedCheckNode extends DeoptimizingFixedWithNextNode implements Lowerable {

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

    41 

    42     @Input protected ValueNode klass;

    43 

    44     public KlassBeingInitializedCheckNode(ValueNode klass) {

    45         super(TYPE, StampFactory.forVoid());

    46         this.klass = klass;

    47     }

    48 

    49     public ValueNode getKlass() {

    50         return klass;

    51     }

    52 

    53     @Override

    54     public boolean canDeoptimize() {

    55         return true;

    56     }

    57 

    58     @Override

    59     public void lower(LoweringTool tool) {

    60         tool.getLowerer().lower(this, tool);

    61     }

    62 }