https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127252
--- Comment #7 from Drea Pinski <pinskia at gcc dot gnu.org> ---
std::remove_cv_t is done as:
template<typename _Tp>
struct remove_cv
{ using type = __remove_cv(_Tp); };
template<typename _Tp>
using remove_cv_t = typename remove_cv<_Tp>::type;
That is just as fast as what your company is doing really and GCC does not
mangle __remove_cv so it won't work where you need to have __remove_cv mangled.
This is why GCC uses using in a struct here for the mangling part.
I think your company is micro-optimizing things too much.
