Jukka Larja (roskakori2006.delete@this.gmail.com) on October 30, 2020 9:04 pm wrote:
[...]
> Anyway, the fact that even AVX (non-2) on many CPUs offers twice the bandwidth, yet gathers no interest
> from game developers, just points more directly that SIMD extensions aren't interesting in the field.

In my absolutely not humble opinion, there needs to be a syntax more convenient than the existing intrinsics. Something like GCC's generic vector facility: GCC vector extensions.

If I have to (syntactically) write a function call even for a simple arithmetic operation, and if I have to manually fuse multiply-adds, then the code is so much hassle to maintain, that I will do it only for functions that _never_ change after deployment. That would be basic linear algebra, and not much else.

As far as I know there is work being done to include something like std::simd in future C++ standards. That might bring enough practical usability for all those SIMD ISAs.