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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
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package org.graalvm.compiler.nodes.debug;

import org.graalvm.compiler.core.common.type.StampFactory;
import org.graalvm.compiler.graph.NodeClass;
import org.graalvm.compiler.nodeinfo.InputType;
import org.graalvm.compiler.nodeinfo.NodeCycles;
import org.graalvm.compiler.nodeinfo.NodeInfo;
import org.graalvm.compiler.nodeinfo.NodeSize;
import org.graalvm.compiler.nodes.NodeView;
import org.graalvm.compiler.nodes.ValueNode;
import org.graalvm.compiler.nodes.memory.AbstractMemoryCheckpoint;
import org.graalvm.compiler.nodes.memory.SingleMemoryKill;
import org.graalvm.compiler.nodes.spi.LIRLowerable;
import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;
import jdk.internal.vm.compiler.word.LocationIdentity;

Debug node that can be used when an arbitrary side-effect and when a LocationIdentity.ANY_LOCATION kill is needed.
/** * Debug node that can be used when an arbitrary side-effect and when a * {@link LocationIdentity#ANY_LOCATION} kill is needed. */
@NodeInfo(cycles = NodeCycles.CYCLES_IGNORED, size = NodeSize.SIZE_IGNORED, allowedUsageTypes = {InputType.Memory}) public class SideEffectNode extends AbstractMemoryCheckpoint implements LIRLowerable, SingleMemoryKill { public static final NodeClass<SideEffectNode> TYPE = NodeClass.create(SideEffectNode.class); @OptionalInput ValueNode value; public SideEffectNode() { super(TYPE, StampFactory.forVoid()); } public SideEffectNode(ValueNode value) { super(TYPE, value.stamp(NodeView.DEFAULT)); this.value = value; } @Override public boolean hasSideEffect() { return true; } @Override public void generate(NodeLIRBuilderTool generator) { if (value != null) { generator.setResult(this, generator.operand(value)); } } @Override public LocationIdentity getKilledLocationIdentity() { return LocationIdentity.any(); } }