dhh Ports Rust to Assembly with Opus 5.5 for 17x Speedup

DHH ported the Omarchy screensaver engine ttfx from Rust to x86-64 assembly in one shot with Opus 5.5, claiming up to 17x speedup. However, a developer's follow-up analysis showed the gains actually came from SoA and redraw optimizations rather than hand-written assembly.

2026-09-26 ~ 2026-09-27 · 3 related posts

• dhh: Opus 5.5 one-shot ported Rust screensaver engine to x86-64 asm, 17x faster — zack_overflow · 2026-09-26
• Dev walk-back: the speedup came from SoA design and writev, not AGI-written asm — zack_overflow · 2026-09-26
• dhh ports Rust screensaver engine to x86-64 asm via one-shot Opus 5.5, up to 17x faster — jedisct1 · 2026-09-27