--- /dev/null	2017-01-22 10:16:57.869617664 -0800
+++ new/src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.code/src/jdk/vm/ci/code/stack/InspectedFrame.java	2017-02-15 16:55:37.569798495 -0800
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2014, 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 jdk.vm.ci.code.stack;
+
+import jdk.vm.ci.meta.ResolvedJavaMethod;
+
+/**
+ * Access to the object variables in a stack frame.
+ */
+public interface InspectedFrame {
+
+    /**
+     * Returns the value of the object local at {@code index}. This value is a copy iff
+     * {@link #isVirtual(int)} is true.
+     */
+    Object getLocal(int index);
+
+    /**
+     * Returns whether the local at {@code index} is a virtual object, and therefore the object
+     * returned by {@link #getLocal(int)} is a copy.
+     */
+    boolean isVirtual(int index);
+
+    /**
+     * Returns true if the stack frame is a compiled stack frame and there are virtual objects
+     * anywhere in the current state of the compiled method. This can return true even if
+     * {@link #isVirtual(int)} return false for all locals.
+     */
+    boolean hasVirtualObjects();
+
+    /**
+     * This method will materialize all virtual objects, deoptimize the stack frame and make sure
+     * that subsequent execution of the deoptimized frame uses the materialized values.
+     */
+    void materializeVirtualObjects(boolean invalidateCode);
+
+    /**
+     * @return the current bytecode index
+     */
+    int getBytecodeIndex();
+
+    /**
+     * @return the current method
+     */
+    ResolvedJavaMethod getMethod();
+
+    /**
+     * Checks if the current method is equal to the given method. This is semantically equivalent to
+     * {@code method.equals(getMethod())}, but can be implemented more efficiently.
+     */
+    boolean isMethod(ResolvedJavaMethod method);
+}