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From: "milasudril at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/107123] Size deduction for vector size in template fails
Date: Mon, 03 Oct 2022 19:10:38 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107123

--- Comment #2 from milasudril at gmail dot com ---
> It would be nice to standardized the vector attribute.

Good features to have:

constexpr std::size (and also std::ssize)

template<class T>
inline constexpr std::is_simd_type_v =3D ...;

namespace std {
template<class T>
struct simd_element_type{
  using type =3D ...;
};

template<class T>
simd_element_type_t =3D typename simd_element_type<T>::type;
}

I belive the working paper is p2638r0

https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2022/p2638r0.pdf=