SIMD OCC EXPERIMENTS

Goal:

Accelerate Occ().

Candidates:

AVX2 byte compare

Idea:

load 32B

compare byte lane

popcount mask

AVX512 compare

64B lanes

checkpoint prefetch

branch reduction

hybrid scalar/SIMD threshold

Measure:

Occ benchmark V1 only.

Metrics:

p50 p95 p99

queries/sec

Rules:

No merge without benchmark gain.

Correctness mandatory.

Determinism unchanged.