[Bug target/80154] sizeof(long double) == 16 even with -mlong-double-80

["daniel.gutson at intel dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80154

--- Comment #3 from Daniel Gutson <daniel.gutson at intel dot com> ---
Documentation is confusing:
      -m96bit-long-double
      -m128bit-long-double
           These switches control the size of "long double" type. 

...
       -mlong-double-64
       -mlong-double-80
       -mlong-double-128
           These switches control the size of "long double" type. 


Note that both option families are referred the same in the man page (didn't
check the manual).

None of these options refer to storage.

I guess what I would need is something like -m80bit-long-double. Anyway I
suggest to clarify the differences of these two families of options, and if at
ever possible, add new ones with more distinct names turning the existing ones
obsolete for future versions.

In short, please confirm that requiring gcc to store 80-bits precision floating
point types into 10 bytes is not possible.
Thanks.