[Bug fortran/64416] RFE: Support REAL128 on arm

[joseph at codesourcery dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64416

--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
The Procedure Call Standard for the ARM Architecture does not include a 
128-bit floating-point type, so if you want to support such a type in GCC 
for ARM you should first work with arm.eabi@arm.com to define the 
associated ABI and get a new version of AAPCS released.  Or you could use 
AArch64 - AAPCS64 does include such a type.