GCC 16 vs GCC 14 on the Gold Submissions: What Actually Moved (opens in new tab)

Six weeks ago I audited every gold-medal submission on the HFT University challenge platform — short answer: 23 of 24 compile at C++11, none of the C++20 marquee features were load-bearing for winning, and the cycles came from SIMD intrinsics, GCC builtins, and