https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93009
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
What is funny is:
template <typename T1, typename T2, typename T3>
__attribute__ ((__always_inline__)) inline auto FMA(T1 a, T2 b, T3 c)
{
return a*b+c;
}
It is called fma but it does not have to do the fused multiple add.
For scalar types, you should use std::fma . BUT NOTE on targets where FMA does
not exist, the function std::fma can be slow as the multiple is done in
infinite precision.
