[Bug target/67260] [sh] Register spill bug for sibcall+complex+softfloat

[kkojima at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67260

--- Comment #19 from Kazumoto Kojima <kkojima at gcc dot gnu.org> ---
(In reply to Oleg Endo from comment #17)
> Kaz, what do you think?

LGTM and looks like we have no choice for 5/4.9.