Doubt related to O3 optimization

[Ezhil P]

hi,
Have a great day
In GCC does optimization levels O2 and O3 use profile information by
default without specifying -fprofile options explicitly? Because O3 uses
flags like -fipa-cp-clone which actually require profile information.
If so , where are the data files related to profile information stored for
reference?
thank you

-- 
P.Ezhil,
Asst Prof,
L.N GOVERNMENT COLLEGE,
PONNERI - 601204