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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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23 
24 
25 package org.graalvm.compiler.nodes;
26 
27 import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_IGNORED;
28 
29 import org.graalvm.compiler.core.common.type.StampFactory;
30 import org.graalvm.compiler.graph.NodeClass;
31 import org.graalvm.compiler.nodeinfo.NodeInfo;
32 import org.graalvm.compiler.nodeinfo.NodeSize;
33 import org.graalvm.compiler.nodes.spi.LIRLowerable;
34 import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
35 
36 /** A node that results in a platform dependent pause instruction being emitted. */
37 // @formatter:off
38 @NodeInfo(cycles = CYCLES_IGNORED,
39           size = NodeSize.SIZE_1)
40 // @formatter:on
41 public final class PauseNode extends FixedWithNextNode implements LIRLowerable {
42 
43     public static final NodeClass<PauseNode> TYPE = NodeClass.create(PauseNode.class);
44 
PauseNode()45     public PauseNode() {
46         super(TYPE, StampFactory.forVoid());
47     }
48 
49     @Override
generate(NodeLIRBuilderTool gen)50     public void generate(NodeLIRBuilderTool gen) {
51         gen.getLIRGeneratorTool().emitPause();
52     }
53 
54     @NodeIntrinsic
pause()55     public static native void pause();
56 }
57