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The GraalVM compiler and the Graal-truffle optimizer.

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/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
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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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package jdk.graal.compiler.nodes;

/**
 * A marker interface for nodes that represent operations that can deoptimize and thus need a BCI to
 * deopt to.
 */
public interface DeoptBciSupplier {

    /**
     * @return the byte code index (BCI) associated with the node implementing this interface
     */
    int bci();

    /**
     * Remember the byte code index (BCI) for code generation or lowering purposes. For example,
     * nodes lowering to foreign calls that can safepoint require a valid BCI for computations of
     * the during-state of such a foreign call.
     */
    @SuppressWarnings("unused")
    void setBci(int bci);
}