Files
BFM-decomp/docs/distill
Drew T 2bf18f2a25 docs(cookbook): 268-269 from the ax/bm distill batch (82 candidates)
268 a register __asm__ pin on a call-clobbered register is honored EXACTLY when the
    pinned range crosses no call — turning 257-2's 'pins are silently ignored' into a
    rule with a precondition, and explaining both faces: a pin that does nothing
    (range crosses a jal, gcc silently falls back) and a pin that fixes a REGALLOC
    residual in a function that has calls (range sits between them). Three A/B'd cards.
269 ten addenda, plus the 266 solo-lever sweep table.

THE HEADLINE IS THE INERT-RIDER RATE. 19 strip-tests across 13 banked bodies: 6 of 19
credited levers are byte-inert (32%), against 4 of 8 last batch. One in three 'this is
what made it match' claims credits something that changes nothing — and one whole
proposed section dissolved under its own strip test. 67 of 82 candidates (81.7%) were
already covered, matching the previous batch's re-derivation rate.
2026-08-24 14:09:13 -06:00
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