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 }