[Bug target/85005] Redesign and cleanup arm.c wrt to flag_stack_clash_protection and flag_stack_check

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85005

ktkachov at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2018-03-23
                 CC|                            |ktkachov at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from ktkachov at gcc dot gnu.org ---
Confirmed.