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

import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_0;
import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_0;

import java.util.ArrayList;

import org.graalvm.compiler.api.replacements.Snippet.VarargsParameter;
import org.graalvm.compiler.core.common.type.StampFactory;
import org.graalvm.compiler.graph.Node;
import org.graalvm.compiler.graph.NodeClass;
import org.graalvm.compiler.nodeinfo.NodeInfo;
import org.graalvm.compiler.nodes.FixedWithNextNode;
import org.graalvm.compiler.nodes.LoopBeginNode;

Placeholder node to denote to snippet preparation that the following loop must be completely unrolled.
See Also:
  • VarargsParameter
/** * Placeholder node to denote to snippet preparation that the following loop must be completely * unrolled. * * @see VarargsParameter */
@NodeInfo(cycles = CYCLES_0, size = SIZE_0) public final class ExplodeLoopNode extends FixedWithNextNode { public static final NodeClass<ExplodeLoopNode> TYPE = NodeClass.create(ExplodeLoopNode.class); public ExplodeLoopNode() { super(TYPE, StampFactory.forVoid()); } public LoopBeginNode findLoopBegin() { Node currentNext = next(); ArrayList<Node> succs = new ArrayList<>(); while (!(currentNext instanceof LoopBeginNode)) { assert currentNext != null : "cannot find loop after " + this; for (Node n : currentNext.cfgSuccessors()) { succs.add(n); } if (succs.size() == 1) { currentNext = succs.get(0); } else { return null; } } return (LoopBeginNode) currentNext; }
A call to this method must be placed immediately prior to the loop that is to be exploded.
/** * A call to this method must be placed immediately prior to the loop that is to be exploded. */
@NodeIntrinsic public static native void explodeLoop(); }