--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/DeoptimizingNode.java	Thu Feb 16 15:46:09 2017 -0800
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2013, 2013, Oracle and/or its affiliates. All rights reserved.
+ * 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.
+ *
+ * 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).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package org.graalvm.compiler.nodes;
+
+import org.graalvm.compiler.nodes.spi.NodeWithState;
+
+/**
+ * Interface implemented by nodes which may need {@linkplain FrameState deoptimization information}.
+ */
+public interface DeoptimizingNode extends NodeWithState {
+
+    /**
+     * Determines if this node needs deoptimization information.
+     */
+    boolean canDeoptimize();
+
+    /**
+     * Interface for nodes that need a {@link FrameState} for deoptimizing to a point before their
+     * execution.
+     */
+    public interface DeoptBefore extends DeoptimizingNode {
+
+        /**
+         * Sets the {@link FrameState} describing the program state before the execution of this
+         * node.
+         */
+        void setStateBefore(FrameState state);
+
+        FrameState stateBefore();
+    }
+
+    /**
+     * Interface for nodes that need a {@link FrameState} for deoptimizing to a point after their
+     * execution.
+     */
+    public interface DeoptAfter extends DeoptimizingNode, StateSplit {
+    }
+
+    /**
+     * Interface for nodes that need a special {@link FrameState} for deoptimizing during their
+     * execution (e.g. {@link Invoke}).
+     */
+    public interface DeoptDuring extends DeoptimizingNode, StateSplit {
+
+        FrameState stateDuring();
+
+        /**
+         * Sets the {@link FrameState} describing the program state during the execution of this
+         * node.
+         */
+        void setStateDuring(FrameState state);
+
+        /**
+         * Compute the {@link FrameState} describing the program state during the execution of this
+         * node from an input {@link FrameState} describing the program state after finishing the
+         * execution of this node.
+         */
+        void computeStateDuring(FrameState stateAfter);
+    }
+}