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BFM-decomp/docs
Drew T cf10d28459 feat(phase-30 S9): x2-9 calibration wave — 22/25 banked + 67 members; the grind rate is MEASURED
- CALIBRATION (25 stratified targets: 12 head-by-weight + 13 sampled across the band, so the
  measurement captures the DECAY, not just the head): 28 agents -> 22 claimed -> gate BANKED 22/25
  (88%) -> propagated 67 member-matches / 13 failed across 38 overlays. 89 instances.
  **22,937 templatable instructions banked in one wave.**
    HEAD  9/12 -> 19,492 of 28,584 templ ins
    BODY 13/13 ->  3,445 of  3,445 templ ins   (the small ones are EASY; all 3 misses were 611-793 ins)
- FIRST SONNET DATA (§136i ladder's new middle rung): **Sonnet 6/6 · Haiku 6/6 · Opus 10/13.**
  The two cheap tiers went 12/12 and Opus absorbed every hard failure — consistent with correct
  size-routing rather than luck. Small n; the controlled A/B stays parked (task #12).
- THE PROJECTION for the >=95% instr bar (Drew's decision input): 411 of 1,872 families cover the
  212,594-instruction gap = ~19 waves optimistic, 20-30 realistic. Mean templ ins/family decays
  1,844 (top-25) -> 1,046 (top-100) -> 525 (top-400) -> 193 (band-wide), so early waves look like
  this one and later ones bank MORE functions for FEWER instructions.
- DECISION (Drew): NO phase close — keep grinding. Campaign tracked as task #15.
- Carried failures -> next lanes: func_8017D174 (793 ins, closeness 5 after ~90 variants; diagnosed
  a backward-scheduler priority race -> permuter, correctly NOT ledgered a wall), func_80186E24
  (611 ins, 133 of 139 diffs pure register numbers -> a natural §137 test), func_8017E2EC.
- §136c sibling-first paid again: func_8017DF84 (766 ins) MATCHED because a banked byte-matched twin
  existed in the same TU; its 697 index-diffs traced to ONE root cause (a bare 0xFFFFFF literal that
  loop.c hoisted to the OUTER preheader, stealing $s3) — closed by binding it to a local declared as
  the FIRST statement of the inner loop body. Verified via rtu_match (real-TU), not just match_one.
2026-08-03 19:06:02 -06:00
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