--- /dev/null	2017-01-22 10:16:57.869617664 -0800
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/graphbuilderconf/GeneratedInvocationPlugin.java	2017-02-15 17:07:28.109798165 -0800
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2015, 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.graphbuilderconf;
+
+import java.lang.reflect.Method;
+
+import org.graalvm.compiler.debug.GraalError;
+import org.graalvm.compiler.nodes.ValueNode;
+
+import jdk.vm.ci.meta.MetaAccessProvider;
+import jdk.vm.ci.meta.ResolvedJavaMethod;
+import jdk.vm.ci.meta.ResolvedJavaType;
+
+public abstract class GeneratedInvocationPlugin implements InvocationPlugin {
+
+    @Override
+    public abstract boolean execute(GraphBuilderContext b, ResolvedJavaMethod targetMethod, InvocationPlugin.Receiver receiver, ValueNode[] args);
+
+    @Override
+    public StackTraceElement getApplySourceLocation(MetaAccessProvider metaAccess) {
+        Class<?> c = getClass();
+        for (Method m : c.getDeclaredMethods()) {
+            if (m.getName().equals("execute")) {
+                return metaAccess.lookupJavaMethod(m).asStackTraceElement(0);
+            }
+        }
+        throw new GraalError("could not find method named \"execute\" in " + c.getName());
+    }
+
+    protected boolean checkInjectedArgument(GraphBuilderContext b, ValueNode arg, ResolvedJavaMethod foldAnnotatedMethod) {
+        if (arg.isNullConstant()) {
+            return true;
+        }
+
+        MetaAccessProvider metaAccess = b.getMetaAccess();
+        ResolvedJavaMethod executeMethod = metaAccess.lookupJavaMethod(getExecuteMethod());
+        ResolvedJavaType thisClass = metaAccess.lookupJavaType(getClass());
+        ResolvedJavaMethod thisExecuteMethod = thisClass.resolveConcreteMethod(executeMethod, thisClass);
+        if (b.getMethod().equals(thisExecuteMethod)) {
+            // The "execute" method of this plugin is itself being compiled. In (only) this context,
+            // the injected argument of the call to the @Fold annotated method will be non-null.
+            return true;
+        }
+        throw new AssertionError("must pass null to injected argument of " + foldAnnotatedMethod.format("%H.%n(%p)"));
+    }
+
+    private static Method getExecuteMethod() {
+        try {
+            return GeneratedInvocationPlugin.class.getMethod("execute", GraphBuilderContext.class, ResolvedJavaMethod.class, InvocationPlugin.Receiver.class, ValueNode[].class);
+        } catch (NoSuchMethodException | SecurityException e) {
+            throw new GraalError(e);
+        }
+    }
+}