nmethod::is_osr_{only_}method()?

[Y.S.Ramakrishna at Sun.COM]

Anyone know why we have both an is_osr_only_method()
and is_osr_method(), since they are synonymous:-

   bool is_osr_method() const                      { return _entry_bci != InvocationEntryBci; }
   bool is_osr_only_method() const                 { return is_osr_method(); }


(I see code that uses both variants, so am not
sure if this was a historical distinction that is
now obsolete?)

thanks!
-- ramki