[Bug target/78804] [RX] -m64bit-doubles does not work

[olegendo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78804

--- Comment #16 from Oleg Endo <olegendo at gcc dot gnu.org> ---
I've been using the patch from attachment 41982 in production for RX for a
while and haven't had any issues so far.