perf(mojo): vendor native 32-wide SIMD scan - #147
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Vendor gld-json SCAN_W = simd_width_of[uint8] (32 on AVX2) and inlined SWAR helpers. Official 2026-09-09-161131 vs #146: message n=1 ser 250→218, deser 348→331 (1.53× Ember). Document n=1 deser 1190→1048. Version stays 0.2.0.
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Summary
Vendor Ember-style
simd_width_of[Byte]scan (32 on this host) and inlined SWAR helpers.Measure (official
2026-09-09-161131vs #146)Message n=1 ser 250→218, deser 348→331 (1.53× Ember). Document n=1 deser 1190→1048. 11/20 cells ≥2% faster.
Validation
pixi run testinmojo/and official all-single stem2026-09-09-161131.