1 /*
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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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13  * accompanied this code).
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23 
24 
25 package org.graalvm.compiler.nodes;
26 
27 import static org.graalvm.compiler.nodeinfo.InputType.Memory;
28 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_0;
29 import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_0;
30 
31 import org.graalvm.compiler.graph.NodeClass;
32 import org.graalvm.compiler.nodeinfo.NodeInfo;
33 import org.graalvm.compiler.nodes.memory.MemoryCheckpoint;
34 import jdk.internal.vm.compiler.word.LocationIdentity;
35 
36 @NodeInfo(allowedUsageTypes = {Memory}, cycles = CYCLES_0, size = SIZE_0)
37 public final class KillingBeginNode extends AbstractBeginNode implements MemoryCheckpoint.Single {
38 
39     public static final NodeClass<KillingBeginNode> TYPE = NodeClass.create(KillingBeginNode.class);
40     protected LocationIdentity locationIdentity;
41 
KillingBeginNode(LocationIdentity locationIdentity)42     public KillingBeginNode(LocationIdentity locationIdentity) {
43         super(TYPE);
44         this.locationIdentity = locationIdentity;
45     }
46 
begin(FixedNode with, LocationIdentity locationIdentity)47     public static AbstractBeginNode begin(FixedNode with, LocationIdentity locationIdentity) {
48         if (with instanceof KillingBeginNode) {
49             return (KillingBeginNode) with;
50         }
51         AbstractBeginNode begin = with.graph().add(KillingBeginNode.create(locationIdentity));
52         begin.setNext(with);
53         return begin;
54     }
55 
create(LocationIdentity locationIdentity)56     public static AbstractBeginNode create(LocationIdentity locationIdentity) {
57         return new KillingBeginNode(locationIdentity);
58     }
59 
60     @Override
getKilledLocationIdentity()61     public LocationIdentity getKilledLocationIdentity() {
62         return locationIdentity;
63     }
64 }
65