- seed: the Opus NEAR-6 draft (.run/P32/t3/opus/func_8001BC6C.c; §500-C REGALLOC-PERM $v0<->$v1 across the six OT-chain insns,
local-alloc qty_compare one span unit). permuter_ils 8x150s -j3 --klass REGALLOC: cycles 6/7/8 = 6, 5, 1 (output-1-1)
- R63 read of the "1": three mutations — (a) `idx` computed AFTER `color`, (b) an early dead `tag = (a1 << 8) | k;` before
k's assignment, (c) `(D_800B9A02 & 0xFFu) << 14` — and (c) turns the target's `lhu` into an `lbu` (semantically WRONG:
the masked score rewards it; second witness after S80). (a)+(b) alone = leaf MATCH 69/69; (a) alone 8, (b) alone 21
- well-defined re-spelling: `k = 0; tag = (a1 << 8) | k;` at the top (I1) MATCHES; k-initialised-first (15), tag=a1<<8 (19),
tag=a1 (8), tag=(a1<<8)|K (20), tag=0 (8), tag-then-k (8) all regress — the lever is the early BIRTH of the tag/k pseudos
(§47 live-length: qty_compare = floor_log2(n_refs)·n_refs·size/(death−birth)), documented in the source comment
- rtu_match MATCH 69/69 in src/800.c; gate_main slate_main3: "slate 1 -> 1 compatible … BANKED 1 of 1 … 143dbb89 BYTE-IDENTICAL",
EXIT 0 (.run/P32/t3s3/gate/gate_main3.log); main open 7 -> 6 (5 pinned walls + func_80039308 NEAR 17)
- func_800CD674's ILS plateaued at the SAME $a3<->$t1 pair (output-2-1 = 2 rows, no drift) — ledgered with its cost (R41)
- variants kept under .run/P32/t3s3/p1bc6c/ (the 11 spellings measured)
Drew T
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