[Bug middle-end/59538] Optimization of -O2 or higher creates incorrect code in loop

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59538

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
          Component|c                           |middle-end
         Resolution|---                         |INVALID
           Severity|critical                    |normal

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The loop to calculate the prime number is an empty finite loop and the result
of the loop is not used so the loop is removed.  This is a valid optimization.