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

["olegendo at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

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

--- Comment #21 from Oleg Endo <olegendo at gcc dot gnu.org> ---
(In reply to Ian Lance Taylor from comment #18)
> How could the size of that struct possibly be 12?  Can you figure out what
> is causing that to happen?  There are exactly 64 bits specified, and the
> fields are all packed.  The size ought to be 8.  I don't see what could
> cause it to be 12.
> 
> Also, I should have said that you need to compile with -m64bit-doubles.

Yeah, right.  D'uh, sorry.
With -m64bit-doubles it prints
12
0 2ec 0

But doesn't matter.  I already found out that the size is 12 bytes in comment
#8 above.  Packing the whole struct helps, as mentioned above.

I don't know why it was decided to use this ABI.  Maybe some legacy stuff.  RX
has those issues.  But I don't think it matters in this case.