Reenable the duplicated test at the bottom of for and while loops. It...

src/jump-target.h

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 75 matching lines @@
   // Accessors.
   CodeGenerator* code_generator() const { return cgen_; }
 
   Label* entry_label() { return &entry_label_; }
 
   VirtualFrame* entry_frame() const { return entry_frame_; }
   void set_entry_frame(VirtualFrame* frame) {
     entry_frame_ = frame;
   }
 
-  void make_bidirectional() { direction_ = BIDIRECTIONAL; }
-
   // Predicates testing the state of the encapsulated label.
   bool is_bound() const { return is_bound_; }
   bool is_linked() const { return is_linked_; }
   bool is_unused() const { return !is_bound() && !is_linked(); }
 
   // Emit a jump to the target.  There must be a current frame at the
   // jump and there will be no current frame after the jump.
   virtual void Jump();
   void Jump(Result* arg);
   void Jump(Result* arg0, Result* arg1);
@@ skipping 197 matching lines @@
   bool is_shadowing_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(ShadowTarget);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_JUMP_TARGET_H_