[Bug libgcc/108279] Improved speed for float128 routines

[tkoenig at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108279

--- Comment #13 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
I tried compiling your tests on Apple silicon using Asahi Linux, but
without success. A first step was rather easy; replacing __float128 by
_Float128 was required.  I then bootstrapped gcc on that machine and
added the (private) include path for <quadmath.h>, and am now hitting missing
__float128 in quadmath.h.  Not sure how to proceed from here.

The machine is gcc103.fsffrance.org, by the way, of the GCC compile farm.