1 /*
   2  * Copyright (c) 2012, 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 package org.graalvm.compiler.nodes.extended;
  24 
  25 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_0;
  26 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_0;
  27 
  28 import org.graalvm.compiler.graph.NodeClass;
  29 import org.graalvm.compiler.nodeinfo.NodeInfo;
  30 import org.graalvm.compiler.nodes.FixedWithNextNode;
  31 import org.graalvm.compiler.nodes.ValueNode;
  32 import org.graalvm.compiler.nodes.spi.LIRLowerable;
  33 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
  34 import org.graalvm.compiler.nodes.spi.ValueProxy;
  35 
  36 @NodeInfo(cycles = CYCLES_0, size = SIZE_0)
  37 public final class FixedValueAnchorNode extends FixedWithNextNode implements LIRLowerable, ValueProxy {
  38     public static final NodeClass<FixedValueAnchorNode> TYPE = NodeClass.create(FixedValueAnchorNode.class);
  39 
  40     @Input ValueNode object;
  41 
  42     public ValueNode object() {
  43         return object;
  44     }
  45 
  46     public FixedValueAnchorNode(ValueNode object) {
  47         super(TYPE, object.stamp());
  48         this.object = object;
  49     }
  50 
  51     @Override
  52     public boolean inferStamp() {
  53         return updateStamp(object.stamp());
  54     }
  55 
  56     @NodeIntrinsic
  57     public static native Object getObject(Object object);
  58 
  59     @Override
  60     public void generate(NodeLIRBuilderTool generator) {
  61         generator.setResult(this, generator.operand(object));
  62     }
  63 
  64     @Override
  65     public ValueNode getOriginalNode() {
  66         return object;
  67     }
  68 
  69 }