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https://github.com/Druthulu/BFM-decomp
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Drew T
0ab474ed5d
- ov_SC03_105:func_80185810 banked in commit:4004 (bank.sh: rtu MATCH 489/489, build rc 0, sha d305ff6d… == config) - §501-P: shape-grep the idiom's constants (`'0x200) << 2'`) and objdump the sibling's window before any dial; a pin/fence a draft "needs" is a property of its other dials — remove every pin after a sibling port (d9 = no pins = MATCH); census: F2 polarity 42, 2-set uu 63, ot16 pin load-bearing only next to 2-set neighbours (d3 = 4); the S83 "hard reg hides nonzero_bits" guess refuted (d5) - post-bank: twin_rescan 2 open / 0 free; verbatim_check --strict 5==5; backlog.py render 3 open; frontier_t4b_final.json 2 / 940 - .gitignore allowlist for .run/P32/t4d/ (variants, logs, notes, the banked body; rtu/ compile dirs stay ignored) - fleet R22 running in the background (.run/P32/t4d/r22_*.log) — recorded at the T4b close
12 lines
3.1 KiB
Markdown
12 lines
3.1 KiB
Markdown
# Backlog — automation near-misses for hand-finishing
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> Generated by `tools/backlog.py render` from `.run/backlog.jsonl`. These are functions the Phase-21 automation got **close** on but did NOT byte-match. The whole-binary byte-gate is the sole arbiter (G3/P9): **byte-matches bank and are NOT listed here** — only genuine near-misses/blockers are. Ranked by hand-session priority: **reach** (×N propagation leverage) → **closeness** (match_one mismatch count, lower = closer) → **size**. Each row's `best_draft` is the closest C the machine reached — resume from there.
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**Open near-misses:** 3 · by status {'near': 2, 'failed': 1} · by class {'WALL-PROVED': 1, 'FRAME+SCHED': 1, None: 1}
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| # | addr | reach | class | nins | status | closeness | where it stuck | best draft |
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|--:|------|------:|-------|-----:|--------|----------:|----------------|------------|
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| 1 | func_80032A74 | None | WALL-PROVED | 422 | near | 1 | T4b HAND PASS S84 (2026-09-06, Fable Max): PROVED at 1 by producer census. Residual = ONE reload-time slot at sp+0x48 (the u16 lhu draft is 422/422 with DIFF 22 = frame rows only; the s16 lh draft is DIFF 1 at idx 244 with the frame exact). The four post-parameter slot producers (reload1.c:658 ghost alter_reg / caller-save.c:249 area / reload1.c:879 invalid-equiv address / reload1.c:3499 spill_stack_slot) each refuted on the bytes: the site loads lhu and the function has no lb and no double load (combine newi2pat ghosts re-derive a narrow load); no register-only insn shares a block with a call (no sched.c:4962 staleness, so no save area without sw/lw); no unallocated single-block equiv pseudo; $t0 holds no pseudo (else $t1 would be the spill reg) and LO mult results retry into GR_REGS. NEW mechanism measured: optimize_reg_copy_2 ghosts (tmp = x; tmp op= c; x = tmp) are minted AFTER regclass -> GR_REGS, allocated, vars=0 (P14). 18 isolated reproducers, 0 draft variants; cookbook §501-M; notes .run/P32/t4c/func_80032A74/NOTES.md | `.run/P32/t4/drafts/func_80032A74_tuclean.c` |
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| 2 | func_80039308 | None | FRAME+SCHED | 518 | near | 4 | T4b HAND PASS S84 (2026-09-06): PLATEAU at 4. Rows 412/415: Fable Y4 (direct *(s16*)(p+6)=arg1) is register-exact (lhu/sh $s7 = the spilled HImode parameter reloaded through the spill register) and natural; the residual is the frame: target [arg1 @0][8-byte no-traffic slot @8][cnt @0x10]. Producer census (§501-M/§501-O): cnt slot = spill_stack_slot[23] (cnt evicted from $s7, retry fails), so the phantom is an INITIAL-LOOP slot with no traffic — caller-save area dead (leaf), LO eviction lands after cnt (GR spilled first; products alternate to GR_REGS, C3), no unallocated single-block equiv pseudo ($t0 free at the k2 site), expand-time locals precede (Y1/Y3/Y4), all 13 lh single-use + no lb (no combine ghost). Rows 49/50: both preheader insns are move_movables hoists in body order (vol = b2*0x100 in the body); X2 measured 495 — a hoisted vbase needs §501-E steering to $s2 without the pin. Notes .run/P32/t4c/func_80039308/NOTES.md | `.run/P32/t5x/fable/func_80039308.c` |
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| 3 | func_80062144 | None | | None | failed | | won't compile standalone (loose-typing / missing decl) | |
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