alt Hacker NewsC++ should focus into turning SIMD into a higher level language instead of being a giant collection of intrinsics. Avx code is unreadable.
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In fact, C++26 made some considerable progress on that front.
https://en.cppreference.com/cpp/experimental/simd
An implementation of which exists in the following GitHub repo (albeit implemented in the xvec::simd namespace rather than std::simd...but otherwise intended to be spec-compliant).
Speaking as a long-time C++ developer...I wasn't uninterested in contracts (which I've known about since the days of Bertrand Meyer flogging them in Eiffel), but I agree with the sentiment here that the SIMD efforts were considerably more interesting.
There are frameworks trying to unify simd/avx, but the abstractions aren't free. At this point, we need better hardware and low level interfaces, not better abstractions.
SIMD cannot be solved at the compiler level. The capabilities of silicon SIMD implementations are fundamentally so disjoint that code using SIMD requires contextual and platform-specific data structures and algorithms.
SIMD on different silicon is incompatible at layers of abstraction far above the codegen manipulation a compiler can do.