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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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
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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;

import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_8;
import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_8;

import org.graalvm.compiler.core.common.type.StampFactory;
import org.graalvm.compiler.graph.NodeClass;
import org.graalvm.compiler.nodeinfo.NodeInfo;
import org.graalvm.compiler.nodes.spi.LIRLowerable;
import org.graalvm.compiler.nodes.spi.Lowerable;
import org.graalvm.compiler.nodes.spi.LoweringTool;
import org.graalvm.compiler.nodes.spi.NodeLIRBuilderTool;

import jdk.vm.ci.meta.JavaKind;

Unwinds the current frame to an exception handler in the caller frame.
/** * Unwinds the current frame to an exception handler in the caller frame. */
@NodeInfo(cycles = CYCLES_8, size = SIZE_8, cyclesRationale = "stub call", sizeRationale = "stub call") public final class UnwindNode extends ControlSinkNode implements Lowerable, LIRLowerable { public static final NodeClass<UnwindNode> TYPE = NodeClass.create(UnwindNode.class); @Input ValueNode exception; public ValueNode exception() { return exception; } public UnwindNode(ValueNode exception) { super(TYPE, StampFactory.forVoid()); assert exception.getStackKind() == JavaKind.Object; this.exception = exception; } @Override public void lower(LoweringTool tool) { tool.getLowerer().lower(this, tool); } @Override public void generate(NodeLIRBuilderTool gen) { gen.getLIRGeneratorTool().emitUnwind(gen.operand(exception())); } }