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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/110167] excessive compile time for std::to_array with
 huge arrays
Date: Thu, 08 Jun 2023 15:44:34 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110167

--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #6)
>       if constexpr (_Nm > 1024 && is_trivially_default_constructible_v<_T=
p>
> 		      && is_trivially_assignable_v<_Tp&, _Tp&>)
> 	{
> 	  array<_Tp, _Nm> __arr;
> 	  for (size_t __i =3D 0; __i < _Nm; ++i)
> 	    __arr[__i] =3D __a[__i];
> 	  return __arr;

I wonder if we should do this for any N, and rely on the compiler to DTRT f=
or
the loop.=