gistfile1.txt

diff --git a/src/org/jruby/runtime/invokedynamic/InvokeDynamicSupport.java b/src/org/jruby/runtime/invokedynamic/InvokeDynamicSupport.java
index 17e442c..13de470 100644
--- a/src/org/jruby/runtime/invokedynamic/InvokeDynamicSupport.java
+++ b/src/org/jruby/runtime/invokedynamic/InvokeDynamicSupport.java
@@ -426,8 +426,11 @@ public class InvokeDynamicSupport {
         getValue = filterReturnValue(getValue, nullToNil);
         
         // prepare fallback
-        MethodHandle fallback = findStatic(InvokeDynamicSupport.class, "getVariableFallback", methodType(IRubyObject.class, VariableSite.class, IRubyObject.class));
-        fallback = fallback.bindTo(site);
+        MethodHandle fallback = site.getTarget();
+        if (fallback == null) {
+            fallback = findStatic(InvokeDynamicSupport.class, "getVariableFallback", methodType(IRubyObject.class, VariableSite.class, IRubyObject.class));
+            fallback = fallback.bindTo(site);
+        }
         
         // prepare test
         MethodHandle test = findStatic(InvocationLinker.class, "testRealClass", methodType(boolean.class, RubyClass.class, IRubyObject.class));
@@ -455,8 +458,11 @@ public class InvokeDynamicSupport {
         setValue = foldArguments(returnValue, setValue);
         
         // prepare fallback
-        MethodHandle fallback = findStatic(InvokeDynamicSupport.class, "setVariableFallback", methodType(IRubyObject.class, VariableSite.class, IRubyObject.class, IRubyObject.class));
-        fallback = fallback.bindTo(site);
+        MethodHandle fallback = site.getTarget();
+        if (fallback == null) {
+            fallback = findStatic(InvokeDynamicSupport.class, "setVariableFallback", methodType(IRubyObject.class, VariableSite.class, IRubyObject.class, IRubyObject.class));
+            fallback = fallback.bindTo(site);
+        }
         
         // prepare test
         MethodHandle test = findStatic(InvocationLinker.class, "testRealClass", methodType(boolean.class, RubyClass.class, IRubyObject.class));