* config/frv/frv.h (IRA_COVER_CLASSES): Define.
(SECONDARY_INPUT_RELOAD_CLASS): Omit unused argument in call
to frv_secondary_reload_class.
(SECONDARY_OUTPUT_RELOAD_CLASS): Likewise.
* config/frv/frv.c (TARGET_SECONDARY_RELOAD): Define.
(frv_secondary_reload_class): Omit unused parameter.
(frv_secondary_reload): New function. Handle the case when
secondary_reload_class() is called before the reload_(in|out)
_optabs have been initialised.
* config/frv/frv-protos.h (frv_secondary_reload_class): Omit
unused parameter.
* config/frv/frv.md: Define an exclusion set between fr550_m0
and fr550_f0.