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.
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5  * This code is free software; you can redistribute it and/or modify it
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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
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17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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23 
24 
25 package org.graalvm.compiler.nodes;
26 
27 import org.graalvm.compiler.core.common.type.Stamp;
28 import org.graalvm.compiler.graph.NodeClass;
29 import org.graalvm.compiler.nodeinfo.InputType;
30 import org.graalvm.compiler.nodeinfo.NodeInfo;
31 
32 /**
33  * Provides an implementation of {@link StateSplit}.
34  */
35 @NodeInfo
36 public abstract class AbstractStateSplit extends FixedWithNextNode implements StateSplit {
37 
38     public static final NodeClass<AbstractStateSplit> TYPE = NodeClass.create(AbstractStateSplit.class);
39     @OptionalInput(InputType.State) protected FrameState stateAfter;
40 
41     @Override
stateAfter()42     public FrameState stateAfter() {
43         return stateAfter;
44     }
45 
46     @Override
setStateAfter(FrameState x)47     public void setStateAfter(FrameState x) {
48         assert x == null || x.isAlive() : "frame state must be in a graph";
49         updateUsages(stateAfter, x);
50         stateAfter = x;
51     }
52 
53     @Override
hasSideEffect()54     public boolean hasSideEffect() {
55         return true;
56     }
57 
AbstractStateSplit(NodeClass<? extends AbstractStateSplit> c, Stamp stamp)58     protected AbstractStateSplit(NodeClass<? extends AbstractStateSplit> c, Stamp stamp) {
59         this(c, stamp, null);
60     }
61 
AbstractStateSplit(NodeClass<? extends AbstractStateSplit> c, Stamp stamp, FrameState stateAfter)62     protected AbstractStateSplit(NodeClass<? extends AbstractStateSplit> c, Stamp stamp, FrameState stateAfter) {
63         super(c, stamp);
64         this.stateAfter = stateAfter;
65     }
66 }
67