[Bug target/127793] Relax _Float128 requirements from VSX to altivec on PowerPC

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127793

--- Comment #5 from Drea Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Trevor Gross from comment #4)
> Yes the __ibm128 double-double.
> 
> Isn't mips long double binary128, or binary64 with o32?

For IRIS, double double was used.  But IRIS support is long gone.
The point still stands, the history of things is much more complex than what
most folks think.