Always cache the original target in a handle on the IC.

src/ic.h

Index: src/ic.h
diff --git a/src/ic.h b/src/ic.h
index bc5c38cb7c7fcd17e15cbf3a986693a5fb9b0ff8..25ac1cfff9083edd6d3122c1c616cac61a2789b9 100644
--- a/src/ic.h
+++ b/src/ic.h
@@ -95,7 +95,9 @@ class IC {
   virtual ~IC() {}
 
   // Get the call-site target; used for determining the state.
-  Code* target() const { return GetTargetAtAddress(address()); }
+  Handle<Code> target() const { return target_; }
+  Code* raw_target() const { return GetTargetAtAddress(address()); }
+
   inline Address address() const;
 
   // Compute the current IC state based on the target stub, receiver and name.
@@ -210,6 +212,9 @@ class IC {
 
   Isolate* isolate_;
 
+  // The original code target that missed.
+  Handle<Code> target_;
+
   DISALLOW_IMPLICIT_CONSTRUCTORS(IC);
 };