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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,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package org.graalvm.compiler.nodes;

import org.graalvm.compiler.graph.NodeClass;
import org.graalvm.compiler.nodeinfo.NodeCycles;
import org.graalvm.compiler.nodeinfo.NodeInfo;
import org.graalvm.compiler.nodeinfo.NodeSize;
import org.graalvm.compiler.nodes.memory.SingleMemoryKill;
import jdk.internal.vm.compiler.word.LocationIdentity;

Allows to build control flow structures that are syntactically correct (can be processed by all Graal phases) but known to be unreachable, i.e., known to be removed at a later point in the compilation pipeline. Useful together with UnreachableControlSinkNode. /**
 * Allows to build control flow structures that are syntactically correct (can be processed by all
 * Graal phases) but known to be unreachable, i.e., known to be removed at a later point in the
 * compilation pipeline. Useful together with {@link UnreachableControlSinkNode}.
 */
@NodeInfo(cycles = NodeCycles.CYCLES_IGNORED, size = NodeSize.SIZE_IGNORED)
public final class UnreachableBeginNode extends AbstractBeginNode implements SingleMemoryKill {

    public static final NodeClass<UnreachableBeginNode> TYPE = NodeClass.create(UnreachableBeginNode.class);

    public UnreachableBeginNode() {
        super(TYPE);
    }

    @Override
    public LocationIdentity getKilledLocationIdentity() {
        return LocationIdentity.any();
    }
}