Anders Olsson 6437649436 perf(arena): pool team_prior/lhood/inv buffers to eliminate per-game allocs ...

Move team_prior, lhood_lose, lhood_win, inv_buf into ScratchArena so
their Vec capacity is reused across games in a Batch. Eliminates 5
per-game heap allocations (the trunc Vec remains local due to borrow
constraints with arena.vars).

Batch::iteration: 23.0 µs (down from 27.0 µs with naive local Vecs;
8% above T0 21.253 µs baseline due to TruncFactor propagate overhead).

2026-04-24 09:10:48 +02:00

3.4 KiB

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