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BFM-decomp/docs
Drew T 774592c452 feat(phase-29): T79 — byte-VARIANT re-sweep: 641 banked; T70's "1 of 10" was a pre-lever measurement
- VALIDATED FIRST, then batched: 0x80143d28 (T66's #1, T76's ApplyMatrixSV callee diagnosis)
  banked 136/136 under the §114 callee axis + §115 named-symbol widening. Batch of 8 followed:
  505/1039. Totals: 5 families outright + 1 partial of 9; 641 members ×N.
- Attribution DERIVED (R33), not parsed from the sweep log: live stubs recomputed per family from
  corpus.stubs before/after. Reconciles exactly against the metric (fn-count +641).
- §116 (NEW): optimization level is a property of the FILE, not the function. 0x801457a4 swept
  0/137 because its exemplar lives in ov_SC01_077_o0b.c (-O0 via WHALE_O0B_OBJS) while all 137
  members' stubs live in <ov>_after.c (-O2). The fix moves the STUB line, not the def: <ov>_o0b's
  .text ends exactly at 0x801457A4, so the relocation is byte-neutral by construction and needs no
  splat re-carve (which is the Arm-A +0x20 wall). 13th time a family-wide 0/N was the harness.
- R14 CORRECTION to the handoff arithmetic: the tier is 123 families / 3,100 distinct on fresh
  sigs, but 1,287 of that distinct is the -O0 cluster behind the Arm-A splat wall. Honest
  addressable tier = 113 families / 85,360 ins / 1,813 distinct. Billing the walled 1,287 as sweep
  yield would have repeated the T76 error.
- 0x80131eec (214 distinct, the biggest item left) diagnosed precisely: header macro decl +
  §20 call-site cast + a scripted §99 pass over 2,022 overlay-local decls; param is void*, so the
  T75 narrow-param refusal does not apply.
- GATES: R22 clean-fleet 140/140 from make clean + extract-all + check-all; tools-health RC=0
  (corpus 0 PHANTOM/0 TRUNCATED, cdecl, audit-binaries, dedup 1886/0, C1 239604/239604);
  report RC=0; 0 NON_MATCHING (G4).
- METRICS: instr 86.7 -> 86.9% (+28,205 ins) · distinct-code 76.9 -> 77.4% (68,196 -> 68,782
  unique fns) · fn-count 91.23 -> 91.41% (+641). The distinct-code move is the point of this tier.
2026-07-29 22:36:09 -06:00
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