Commit Graph

540 Commits

Author SHA1 Message Date
Drew T 4f7c3b64a3 docs(phase-33): commit-map + citations resolved to the rewritten history (C4–C7 — the tip commit)
- docs/commit-map.tsv: 4,032 rows (ordinal of the ORIGINAL main -> rewritten hash, author/committer dates, subject);
  1 pruned row of zeros (ordinal 1712, "session archive update"); 0 old hashes asserted; ordinal 1 unchanged by the
  rewrite (byte-identical)
- resolve_tokens: 1,238 commit:NNNN tokens -> shortest-unique new hashes in 98 files (docs, phase-ends, logs, tool
  docstrings, 2 C comments, the A5 evidence logs); residue left as tokens: commit:1712 x4 (the pruned commit),
  commit:orphan-24 x2, commit:orphan-26, commit:orphan-35 (cited commits that exist in no lineage)
- the rewrite (C4): filter-repo 2.47.0 on a bare clone of the C2 tip, 311 s, exactly 1 pruned, main 4,032 -> 4,031;
  the pre-rewrite history is mirrored in the private archive repo and in the local bundle
- the proof (C5): verify_rewrite 4,031 pairs / 0 failures; absent_scan 0 offenders; gate_scan 0 offenders on the clone
- adoption (C6): 100 text files differ at the tip, 0 purge paths, 0 added/deleted; leftover refs dropped; no gc yet
- resolver skips tools/public_rewrite/ (its self-test fixtures are the token grammar, not citations); repo-local
  identity is the GitHub noreply address from here on; CURRENT_PHASE: C4–C7 logged, checkpoint -> NEXT = C8
2026-09-06 23:28:39 -06:00
Drew T 6e37e8ec62 docs(phase-32): T4c harvest + checkpoint — the frontier is EMPTY (census 0 stubs / 0 ins); cookbook §501-Q (the combine self-update ghost slot) + §501-R (a hoisted invariant read three times: inline temps merged by combine_movables, u16 as a cse firewall, the allocation order IS the callee-saved bank; every pin came off), accelerators (15)(16), decision-log P32 S85 T4c, tools/cc1_dumps_tu.sh + tools/alloc_table.py promoted (+ SETUP rows, cc1_dumps.sh -dL), wave_exclude 0 entries, backlog 1 legacy row, .run/P32/t4e (56 variants, 18+8 reproducers, NOTES, banks, slates); 🛑 checkpoint refreshed as the T5 seed (the fleet R22 + report chain runs in the background — its logs are recorded by the next session) 2026-09-06 16:13:19 -06:00
Drew T 0ab474ed5d docs(phase-32): T4b hand pass — row (d) harvest: cookbook §501-P (the atlas's 0.55 "weak cousin" was the same-shape sibling; its natural spelling ported with ZERO pins/fences; the 12-variant element census), accelerators (14), decision-log P32 S85, NOTES + 12 measured variants + rtu logs; backlog 3 open; census 2 stubs / 940 ins; T4b hand pass COMPLETE (13/15 banked + 2 verdicts)
- 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
2026-09-06 13:21:29 -06:00
Drew T e7679b51ff docs(phase-32): T4b hand pass — row (c) func_80039308 PLATEAU at 4 (§501-O phantom-slot census for a leaf; ledger row); 🛑 CHECKPOINT refreshed for the pause: (a) PROVED · (b) BANKED commit:4001 · (c) PLATEAU 4 · (d) NEXT (sibling search first), then T4b close and T5
- (c): cnt's slot is spill_stack_slot[23] (evicted from $s7), so the phantom @0x8 must be an initial-loop no-traffic slot; every producer refuted on dump facts (leaf: no save area; LO spilled after GR and products alternate to GR_REGS — C3 measured; no unallocated single-block equiv pseudo; expand-time locals precede; 13 lh single-use, no lb). Rows 49/50 = two move_movables hoists in body order.
- row (d) read only (rtu DIFF 13 re-verified); brief + step 0 (§501-N banked-sibling search on its symbol set) in the checkpoint
- no src/ change in this commit; fleet R22 owed at the T4b close (last check-all 218/218 before the (b) bank)
2026-09-06 12:31:08 -06:00
Drew T 3e90db193f docs(phase-32): T4b hand pass — row (b) harvest: cookbook §501-N (port the banked sibling's spelling; the asm-label u32 array alias unlocks cse's OT base binding), accelerators (13), NOTES + 7 measured variants; ledger 4 open; bank.sh session trailer from $CLAUDE_SESSION
- func_800CF408 banked in commit:4001 (rtu MATCH 178/178 in the real TU; make build BINARY=md_MAIN_007 -j8 rc 0; sha 2ff702b6… == config/check.md_MAIN_007.sha)
- post-bank: twin_rescan 3 open / 0 newly free; verbatim_check --strict 5==5; backlog render 4 open (row pruned)
- CURRENT_PHASE.md: S84 log entry + checkpoint refreshed (rows (c)(d) next; fleet R22 owed at the T4b close)
2026-09-06 12:08:11 -06:00
Drew T b6fd3fff28 docs(phase-32): T4b hand pass — func_80032A74 PROVED at 1 by producer census (§501-M); ghost_census.py + cc1_dumps.sh repair; backlog tie-break repair
- main:func_80032A74 (422 ins, closeness 1): the residual is ONE reload-time slot at sp+0x48 (u16 draft = 422/422 code, DIFF 22 frame
  rows; s16 draft = DIFF 1 at idx 244 lh vs lhu). Every post-parameter slot producer enumerated from gcc-2.7.2 (reload1.c:658 ghost
  alter_reg / caller-save.c:249 area / reload1.c:879 invalid-equiv / reload1.c:3499 spill_stack_slot) and refuted on the bytes: combine's
  newi2pat ghosts re-derive a narrow load and the site is lhu (no lb, no double load); a save area without sw/lw needs sched.c:4962
  staleness and no register-only insn shares a block with a call; $t0 holds no pseudo; LO mult results retry into GR_REGS. Verdict
  PROVED at 1 (pin kept with the verdict; ledger WALL-PROVED).
- NEW mechanism measured: local-alloc.c optimize_reg_copy_2 (tmp = x; tmp op= c; x = tmp) mints a ghost with stale refs, but after
  regclass -> GR_REGS, allocated, no slot (P13/P14). 18 isolated reproducers, 0 draft variants; cookbook §501-M; accelerators (12).
- tools/ghost_census.py (new): ghosts in a .lreg dump with their class (ST_REGS => slot). tools/cc1_dumps.sh: prints the .frame line,
  ins count, spill lines and the census; the under-counting standalone-(use) grep is gone. SETUP rows (R21).
- tools/backlog.py: load_best kept the EARLIEST record at equal closeness (docstring said latest) — the S84 row never rendered; fixed.
- CURRENT_PHASE.md: S84 log + refreshed 🛑 checkpoint (rows (b)(c)(d) next, then T5). No src/config/carve change; fleet check-all
  218/218 rc 0 at the S84 preflight.
2026-09-06 11:44:40 -06:00
Drew T fcec654163 docs(phase-32): cookbook §501-L — when two dials share a slot they couple (func_800CF408's floater cure vs the qty_compare contest; the decoupling lever) 2026-09-05 23:34:08 -06:00
Drew T 90b2425ee0 docs(phase-32): cookbook §501-J (a proved tree wall is not an RTL wall — §474's floor built at RTL level via EXPAND_SUM, func_80011380) + §501-K (sched2's /s-store exemption and a pseudo's own slot vs a hand pad, func_800CF6D0); checkpoint §1b: 11 banked, 1 in flight, 1 pin left 2026-09-05 23:23:31 -06:00
Drew T da90d3fc28 docs(phase-32): cookbook §501-I — manufacturing §172 producer-2 orphans (an s16 read from memory at each use), the shared-scratch store dependence, the laundered first-statement address (func_8017DC80); T4b row (9 banked) 2026-09-05 19:19:42 -06:00
Drew T 066a2f1cce docs(phase-32): cookbook §501-H — large constants are unboosted floaters; the prologue weave is decided by which ready-list stalls eat them (func_800CD92C, zero pins); T4b row (8 banked) 2026-09-05 18:55:38 -06:00
Drew T d7561f2680 docs(phase-32): cookbook §501-G — three passes, three dials (sched1 birthing boost / a phantom USE nop in sched2's model / a local-alloc tie broken by the P_TAG bitfield's flow ref count; func_800CF3E8); T4b row (7 banked, 1 near-proved) 2026-09-05 18:43:53 -06:00
Drew T ce4cdaf750 docs(phase-32): cookbook §501-F — split the CSE quantity when loop.c proves the hoist split unreachable (hard-reg dividend copy + hoisted sign; func_801834A4); T4b row (6 banked) 2026-09-05 18:26:11 -06:00
Drew T 78613864e4 docs(phase-32): cookbook §501-E — a register pin forbids that register to every retried allocno (regs_ever_live → bad_spill_regs → retry_global_alloc; func_80020DA4); T4b row (5 banked) 2026-09-05 18:16:51 -06:00
Drew T ad62b693a1 docs(phase-32): cookbook §501-D — one value-returning call makes the call a birthing insn (reg_n_sets[$v0]==1 → sched1 max priority → the def above the jal); a second $v0 set via the callee's real return type (func_8017DF28); T4b row (4 banked) 2026-09-05 13:29:17 -06:00
Drew T 1f024f8e4b docs(phase-32): cookbook §501-C — the dying-input suggestion vs the birthing boost (func_800CD674); backlog 13 open; bank.sh DRAFT_DIR + R43 hardening; T4b row (3 banked) 2026-09-05 13:26:52 -06:00
Drew T 2d0957ffb1 docs(phase-32): cookbook §501-B — do not merge case tails in C (cross-jump merges post-alloc; a C-level merge deletes the reference that decides allocno order — func_80039DEC); T4b row 2026-09-05 13:21:10 -06:00
Drew T ec5572c5fb docs(phase-32): cookbook §501 — a lever that measures worse may be a cascade (func_800391D4: the explicit promotion flipped loop.c's insn_count threshold; pads 7→9 closed it); accelerators (9); T4b row 2026-09-05 13:16:50 -06:00
Drew T 90acd6902f docs(phase-32): T4 DONE — the walls' FINAL ledger: 7 pinned rows re-probed in TU context (3 CC1 FAILs were plumbing, re-probed in a sandbox TU), 1 PROVED + 6 CANDIDATE, no verdict changed; pins annotated, backlog rows for all 7 (R62 paths fixed), cookbook §500-I, decision-log
- every wall's best draft re-run with rtu_match in its CURRENT real TU: func_80011380 DIFF 6 (--o0, §474 PROVED),
  func_80020DA4 DIFF 2, func_8017DF28 DIFF 2, func_801834A4 DIFF 6 ×3 variants; leaf match_one re-measured the CC1 rows
  (func_80032A74 1, func_80039DEC 2 permuter / 9 sonnet, func_800391D4 3)
- the three CC1-FAIL rows: func_80032A74 = 7 typedefs the TU provides via 800_shared.h + 4 decl spellings → synced copy
  (.run/P32/t4/drafts/func_80032A74_tuclean.c) DIFF 1 in the real TU (idx 244 lh vs lhu); func_80039DEC = the TU's narrow
  prototype (800_c.c:3496) vs the K&R def → sandbox TU (.run/P32/t4/tu/, no-proto decl) DIFF 2; func_800391D4 = the
  load-bearing `D_80073140[][1]` vs the TU's `[]` → sandbox TU DIFF 3 (TU-compatible spellings regress to 65 @ 76)
- config/wave_exclude.txt: each of the 7 lines carries its S83 re-probe verdict; exclude_audit --assert-fresh 7/7
- backlog: rows for all 7 walls (the path-less func_80011380/func_801834A4 given existing drafts, R62; two rows re-logged
  after a shell-quoting mangle); docs/backlog.md 16 open
- CURRENT_PHASE.md: T4 row DONE, the wall ledger table (row · ins · class · leaf/real-TU closeness · mechanism+citation ·
  attempt record · verdict · best draft; func_800CF3E8 listed as an unpinned candidate), the T4 log entry, 🛑 block → T5
  (R27 Max prompt + the gate-2 procedure)
- cookbook §500-I (the sandbox-TU re-probe method + the verdict table); accelerators (8); decision-log P32 S83 (R31)
2026-09-05 12:11:10 -06:00
Drew T a373a000d1 docs(phase-32): T3 CLOSED — 39 banks in the pass (29 this session), census 15 stubs / 3,758 ins (7 pinned walls + 8 NEAR), fleet R22 218/218 ×3 today, fleet instr 100.0% / distinct 99.9% / fn 100.00%; §500-H; 🛑 block → T4
- CURRENT_PHASE.md: T3 row DONE with the close numbers; the S83 steps 8–9 log entry; the 🛑 SESSION CHECKPOINT rewritten
  (T3 CLOSED, T4 NEXT; the 15-row census with draft paths and mechanisms; the T4 procedure incl. the §376 re-probe of the
  three CC1-FAIL walls before any verdict; T5 carry)
- step 8 tail: func_8001BC6C BANKED (commit:3948); func_800CD674 plateau ledgered; func_800CF3E8 Opus second look 27 HOLDS —
  §500-D1's mechanism corrected to cse.c find_best_addr (fold_rtx MEM, COST pseudo 0 vs hard reg 1), the alias lever refuted
  5/5, a new zero-byte pinned-pointer launder found (79 @ 470) — cookbook §500-H, backlog row with cost (245k tokens / 29 min)
- make report: fleet instr 13,484,739 / 13,488,497 = 100.0% · distinct 5,812,831 / 5,816,589 = 99.9% (90,975 / 90,984 unique)
  · fn-count 363,199 / 363,214 = 100.00% · INCLUDE_ASM 15; main REAL 783 · LINKED 1,256 · VERBATIM 3 · stubs 6 ·
  byte-identical 2,085 / 2,091 = 99.71% · 143dbb89; census .run/P32/frontier_t3_close.json; twin_rescan 0 free
- R22 (clean + extract-all + check-all) after the Makefile guard + the main bank: 218 passed / 0 failed, exits 0/0/0
  (.run/P32/t3s3/r22c_full.log) — the third green fleet sweep of the session (10:46, 11:09, 12:00)
- docs/accelerators.md (5)–(7): the build is the batch verdict / read a waypoint's diff both ways / a live probe in src/ is
  build input; docs/backlog.md 14 open; verdicts.jsonl 50 rows; the s83 Opus draft + report kept (R20)
- kill gate: 29 banks + 3 new verdicts this session, the three bounded tail attempts spent — T3 closes on the evidence
2026-09-05 12:01:03 -06:00
Drew T 9471d8c01e docs(phase-32): cookbook §500-G — the func_8001BC6C crack (permuter waypoint minus its width mutation = the §47 birth lever, spelled well-defined), the func_800CD674 plateau, the masked_diff-probe/Makefile collision; harvest_notes; index regenerated 2026-09-05 11:39:04 -06:00
Drew T 2fdcc4f120 docs(phase-32): T3 S83 CHECKPOINT — 28 banks (census 44 -> 16 stubs / 3,827 ins), fleet R22 218/218 twice, the 17-row Haiku queue 17/17 MATCH; cookbook §500-F; 🛑 block refreshed
- CURRENT_PHASE.md: T3 row (47/47 drafted, 38 banked, 9 NEAR ledgered, 0 FAIL), the S83 log entry, the 🛑 SESSION
  CHECKPOINT rewritten to the verbatim-replay standard (supersedes the 10:01 block): state, what S83 did, the 16-row
  census with draft paths, NEXT (step 8 permuter_ils ×2 + one Opus look, then the close), files/tools/gotchas, T4/T5 carry
- cookbook §500-F (the queue's yield + the four integration classes a per-draft rtu_match cannot see: same-TU spellings,
  §304 ×3, verdict-relative-to-TU-at-verification, the md_* jtbl route is §303); docs/cookbook-index.md regenerated (--check OK)
- .run/P32/t3/BRIEF.md: the §304 + exact-TU-spelling contract lines; harvest_notes.md; verdicts.jsonl +17 (session 491895ad);
  pending_launch.txt emptied (all 17 launched 10:57); the 17 Haiku drafts + 3 agent reports (R20)
- tools/jtbl_carve.py: the leading-island refusal now says §303 supersedes the §260 split for md_* modules (P32 S83 witness)
- backlog: the 9 NEAR rows logged (class · closeness · best draft · cost "1 Opus agent, 30–70 min", R41); docs/backlog.md 15 open
- .run/P32/t3s3/ (NEW, allowlisted): splice.py, bank.sh (verbatim grep -> rtu xN -> splice xN -> one build -> sha -> commit
  on green), backlog_near.sh, prompts/ (17), gate/slate_main2.json + log, r22/r22b/tools-health/build/bank/twin_rescan logs
- census jsons .run/P32/frontier_t3s3_{mid,haiku}.json; progress digests regenerated by tools-health (R22 218/218 at 10:46 and 11:09)
2026-09-05 11:11:03 -06:00
Drew T 9480c979a0 docs(phase-32): T3 CHECKPOINT — the launching coordinator overflowed after bank 9; 22 agent verdicts recovered (20 MATCH / 9 NEAR / 2 FAIL of 31), 11 swept Opus deliverables restored + re-verified, cookbook §500 harvest, playbook §S80 addendum-2, agent_drafts_restore.py
- verdict ledger .run/P32/t3/verdicts.jsonl rebuilt from the 31 T3 transcripts (agent_verdicts.py); every unbanked draft
  re-verified with rtu_match in its real TU: 10 MATCH awaiting the gate (main func_80015B6C 120 + func_8002FDE8 73;
  md_SC03_054 func_801EF6D8 604 + six jtbls; md_SC03_053 func_801EF734 44 + func_801EF7E4 72; md_MAIN_007
  func_800CF148/2BC/EEFC/EF94/068) + func_800CF3B0 leaf-exact behind the TU's void/3-arg decl; 9 NEAR at exact length
  (2/6/15/17/27/35/46/49/137), each with its class and inert-lever list
- R48 incident: one agent's `find .run/P32/t3/opus -maxdepth 1 -type f ! -name <mine> -exec mv {} _scratch/` swept 11
  sibling deliverables (two MATCHes among them); found in _scratch/, restored to the contract paths, byte-verified;
  tools/agent_drafts_restore.py (NEW: transcript replay) as the fallback; .gitignore allowlist for .run/P32/** so the
  drafts, ledger and census files are committed (R20)
- harvest (R16/R30): cookbook §500 (10 banked closers, 10 MATCH closers, 9 NEAR classes, two NEW mechanisms — the
  pinned-base-vs-pseudo-address alias basin and #line-equalised ASM_OPERANDS for cross_jump — and the wave-process
  defects); wave-playbook §S80 addendum-2 (per-function work dirs, JSON-only final message, the 20-agent cap, the
  recovery tools); accelerators P32 T3; decision-log P32 S82 (R31); SETUP tooling row (R21); cookbook-index
  regenerated; .run/P32/t3/BRIEF.md output contract amended for the 17 queued launches
- CURRENT_PHASE: T3 row IN PROGRESS, Log entry, 🛑 SESSION CHECKPOINT (census 44 stubs / 5,313 ins with every row's
  state and draft path, the 9-step resume order, the dead session's read-only T4 pre-read); harness task list rebuilt
- no src/ or config/ change in this commit; no fleet R22 has run since the 10 T3 banks — the resume order starts with one
2026-09-05 09:36:43 -06:00
Drew T 6853c0c341 docs(phase-32): cookbook §499 (static base evidence for a never-onboarded payload; the first build is a NULL oracle for fine base errors) + decision-log P32 S81 (R31: six instrument defects, one shape) 2026-09-04 23:55:26 -06:00
Drew T c513e1fbbd feat(phase-32): T1a (2) — resident: func_800D128C (243 ins) BANKED byte-identical 8e17e02f via the raw splice + a 5-piece carve; three instrument fixes (§498)
- BANK: the stored S71 closeness-0 draft spliced into src/resident/resident_jr_800D128C.c; jtbl_carve --func
  carved jtbl_80113FB8 (119 entries, 1 pad word trimmed) + jtbl_80114198 into [0x451c0, .rodata,
  resident_jr_800D128C] + [0x453c4, data, tail3]; JTBL_PADS 0,4; make extract + make build BINARY=resident -j8
  rc 0, sha 8e17e02ff8954d07c979449198f7e1645046b353 == check (R53). pads_audit ok/ok; interleave_check
  ALIGNED n=5; verbatim_check --strict 5==5. Resident stubs 2 -> 1 (func_800D06E8 remains).
- WHY THE GATE SAID DIFF (parallel_gate banked 0/DIFF on an rtu_match MATCH): jtbl_carve.set_overlays_var
  regenerated resident_JTBL_INTERLEAVE from the carve set and DROPPED the resident's `--pre hdr.rodata.o`
  (§8f leading-rodata sandwich); make extract refused (ld_interleave: hdr.rodata.o would be parked with
  .text), the build linked the STALE script (249,252 differing bytes from file offset 0x4), and
  harvest_verify._jtbl_prep_one never read the post-carve extract's exit code (R49/R61).
- FIXES (R35/R40/R57): jtbl_carve._merge_pre carries an existing --pre forward (idempotent; overlays
  unchanged, 4-shape unit control); harvest_verify refuses loudly on a failed post-carve extract and
  restores the snapshot (CARVE refusal, NOT a draft verdict); interleave_check's anchor accepts a leading
  --pre (was a false DRIFT n=0 on the resident; control ov_SC02_017 ALIGNED n=44 unchanged).
- cookbook §498 (+ the stale-asm-after-a-failed-extract sequencing law); SETUP rows for all three
2026-09-04 23:28:59 -06:00
Drew T c52190ca86 fix(phase-32): T1b (1) — jr_isolate_all keys a bodiless typedef struct Tag Alias; by the ALIAS (§497); ov_SC02_017 dry-run REFUSED -> CLEAN, no source rename
- _type_names returned the TAG for `typedef struct Rec801806C8_s Rec801806C8;`, so the typedef block and the
  tag's own packed struct definition collided under one key with different bodies and the R43 "CONFLICTING
  bodies — a rename is needed" refusal fired on legal C. Now keyed by the alias (_TYPEDEF_TAG_ALIAS); the
  `carried` set learns the alias; `typedef struct X X;` (alias == tag) keeps the old key so a second one
  still dedupes/refuses. Unit control on 7 block shapes PASS; ov_SC02_017 --only func_80186C64 --dry-run:
  2 region files, no carve repoints. cookbook §497; SETUP row.
2026-09-04 23:24:02 -06:00
Drew T 380ccdc843 feat(phase-32): T1a (1) — resident code subseg split (3 regions, byte-identical 8e17e02f) + jr_isolate_all include-derived provided types (§496)
- jr_isolate_all resident --only func_800D128C: [0x4 c resident] [0x12ec c resident_jr_800D00E4]
  [0x2494 c resident_jr_800D128C]; the banked jr func_800D00E4's .rodata carve + JTBL_PADS + --order
  repointed to resident_jr_800D00E4.o (config/overlays.mk resident block only, R60); make extract +
  make build BINARY=resident -j8 rc 0, sha 8e17e02ff8954d07c979449198f7e1645046b353 == check (R53)
- TOOL FIX (R43/R33): the carried-type test consulted _engine_types() (engine_types.h + common.h) for
  every TU, assuming each region includes engine_core.h; the resident includes only common.h, so its
  file-local `typedef struct {...} CdFileLoc;` (a name engine_types.h also defines) was silently NOT
  carried -> `parse error before cdFileLocTable` in both region TUs, build rc 2 while the stale binary
  on disk read green. Now _provided_types(header) derives the set from the TU's own #include lines
  (engine_core.h => engine_types.h + common.h, never engine_core's macro-internal typedefs; common.h
  => common.h) and _file_scope_decls(items, provided) uses it at both decision points. R39 controls:
  overlay header == legacy set (1,197 names); resident set lacks CdFileLoc. cookbook §496; SETUP row
- rtu_match func_800D128C --split resident_jr_800D128C: MATCH (243 ins) on the stored S71 draft;
  the gate is the next commit
2026-09-04 23:20:04 -06:00
Drew T 452975e852 docs(phase-31): S80 #10 CLOSE — the verbatim end-state: manifest 6 → 5 rows (the five PERMANENT rows RATIFIED in _README; the GAME-C row decompiled), cookbook §495 (two def-side declaration walls, the S79 assembly "bank" P9 correction, the gate that dropped a bank on exit 0), decision-log S80 addendum (R31), SETUP rows; tools/parallel_gate.py: banked-but-not-merged now exits 2 with the worker's raw git status kept + per-run .run/pgate_runs/<ts>.json; CURRENT_PHASE #10 bullet + the S80 #10 CLOSE checkpoint (R22 213/213, tools-health OK, census 21 stubs / 4,554 ins, NEXT #11 = PhaseEnd, gate 2); regenerated digests 2026-09-04 22:07:35 -06:00
Drew T 09e0b27811 docs(phase-31): S80 #9c — the S79 drafting task's NEAR/WALL ledger: 15 rows logged to the backlog (each with the residual's gcc mechanism), the ≤3 residuals pinned as WALL candidates in config/wave_exclude.txt after an 8-seed permuter_ils sweep on the now-permutable pinned seeds (no score-0; func_80039DEC 9→2 = the K&R raw-preserve register, func_80023BF0 18→11 ADDRESSING, func_8017DF28's "1" was a divergent store rewrite — closeness stays 2, R14); cookbook §494 v2 (ten banks, the Opus verdicts' idioms: P_TAG bitfield store, inverted arms, sibling-reading, the 518-ins spelling laws, gdb-on-cc1 allocno arithmetic, K&R s16 params, true_dependence, field-boundary fences, extendhisi2 orphans, [][1] decls) + the final ledger; .run/S79w allowlisted (27 drafts + 3 permuter waypoints + verdict ledger + briefs, 264 KB — R20) 2026-09-04 21:21:05 -06:00
Drew T 7fbdb8fd63 fix(phase-31): S80 #9c — the permuter could not permute a PINNED seed, and it was our instrument: hide_asm carried only the __asm__ spelling (3 S79 seeds use asm("$7")), permuter_ils warm-restarted from the DECODED waypoint (raw pins back in base.c → cycles 2..N were silent parser refusals reported "(unchanged)"), and defines_fn refused K&R-style definitions (436 stored backlog drafts kept out of the lane for four phases). Fixed + R39-controlled over 5,311 drafts (the bare word asm in INCLUDE_ASM path strings was a caught false positive): re-hide every waypoint, assert the definition survived, abort exit-2 on a refusal (R61a), flushed logs (R55). Every S79 pinned seed now iterates; ov_SC06_022:func_8017DF28 (pinned WALL, closeness 2) reached 1 in its first cycle. cookbook §493 S80 correction + §494 v1 (S79 idioms); SETUP rows (p16_permute/permuter_ils, agent_verdicts.py) 2026-09-04 20:59:35 -06:00
Drew T a0139c31c8 docs(phase-31): S79 #8 close — cookbook §493 (the permuter route end-to-end; the D-NEAR ledger), p16_permute surfaces the permuter's parser refusals, SETUP row, census 31, report, checkpoint (task #9 brief)
Stubs 32 -> 31 after the func_80015760 bank (commit:3877); R22 fleet 213/213 (.run/S79_check_all_8.log);
main game-code 93.5% (38,854 / 41,534). Permuter ILS plateaus recorded with their residual named:
func_80015608 best 1, func_80039B20 best 7, func_80038698 pinned seed refused (11). The ILS runner
had reported "no waypoint" for 8 cycles in 20 s on a seed the permuter's C parser rejects; it now
prints [permuter] REFUSED and leaves PERMUTER_REFUSED.txt (positive-controlled on func_80038698).
2026-09-04 18:50:20 -06:00
Drew T 80ddd40d23 docs(phase-31): S79 #7 close — cookbook §492 (plumbing was three things: a raw-splice bank, an -O0 checker flag, two R48 same-name phantoms), census 32, report, backlog ledger, checkpoint (task #8 brief); func_80011380 pinned as the §474 proved wall
Stubs 35 -> 32 after the #7 banks (commit:3873 commit:3874); R22 fleet 213/213 (.run/S79_check_all_7.log).
ov_SC05_018:func_80180BE0 and ov_SC06_010:func_801809E4 have NO draft: their ledger drafts were other
overlays' same-named functions (.run/backlog_drafts/<fn>.c is keyed by bare fn name) -> drafting pool.
config/wave_exclude.txt: main:func_80011380 pinned WALL with the §474 proof (fold-const split_tree +
stupid.c adjacency), 4 entries.
2026-09-04 18:35:38 -06:00
Drew T 595fc9fa49 docs(phase-31): S79 #6 close — cookbook §491 (the mechanical class: a phantom stub, two jtbl twins, one clone; three tool gaps), jtbl_pads_fix regex fix (+positive control), SETUP rows, census 35, checkpoint refreshed (task #7 brief)
Stubs 38 -> 35 after the #6 banks (commit:3868 commit:3869 commit:3870 commit:3871); R22 fleet 213/213
(.run/S79_check_all_6.log); frontier_classify 35 rows (main 16, md_MAIN_003 5, resident 2, ov 12).
jtbl_pads_fix's PAD_ERR_MORE regex carried jtbl_rodata_pads' old wording and reported "no
pad-count drift" over a red build; it now accepts both spellings and, positive-controlled with a
deliberately short spec, reports "emits >4 table(s), spec declares 4". The deferred carves and
their blockers are itemised in §491 and in the checkpoint's task #7 brief.
2026-09-04 18:19:57 -06:00
Drew T 02f060f607 feat(phase-31): S79 #5 — the libpad 4.2.1 + libapi 4.2 band and the apicard region LINKED from real objects: 13 stubs + 4 TUs + the reorder island gone; main 16 stubs, fleet 38
800c3 (0x8005CE18-0x8005FC68, one contiguous run of 33 interleaved Sony objects) is now four
stub rows — libapi1 (21 BIOS trampolines + COUNTER), libpad1 (PADENTRY + PADMAIN 760), libapi2
(L02/L03), libpad2 (PADCMD PADIF PADPORTD PADSEQD WAITRC2) — fed by two WINDOWED psyq_integrate
calls from the raw .run/obj42/{libapi42,libpad421} dirs (integrate tiles each stub with one
library; every boundary checked against .text SECTION sizes). The apicard region's three
"game code" rows were libapi 4.2's C objects to the byte: 800c2 = FIRST.o (firstfile + the
"no jump table wall" stub func_80062144), 800c2_2 = PAD.o, 800c2_3 = PATCH.o + CHCLRPAD.o ->
apicard5/6/7; make_apicard_used.py sources libapi from 4.2 (the EXE's real libapi; libcard
stays 4.0) into .run/obj42/apicard_used, 26 objects / 7 blocks, no game code left in
0x80061F38-0x80062888. src/800c3.c (129 hand-matched "C", 62 verbatim bodies, 19 stubs incl.
the four §332 %lo-in-a-delay-slot "walls"), src/800c2.c, src/800c2_2.c, src/800c2_3.c removed;
REORDER_TUS is empty (mechanism kept). Cookbook §490.

Two stale instruments fixed: exclude_audit let a pinned WALL outrank LINKED (PopMatrix/
PushMatrix had sat as walls since S68 while living in libgte3, linked since Phase 8) — LINKED
dominates now, config/wave_exclude.txt 13 -> 3; frontier_classify carried a hard-coded 49-name
LINKED set (R51) and reported 337 "stubs" — derived from the Makefile now.

Verified: main 143dbb89f34491258bbc27810d0a12ec8b43a8dd WITH all SDK dirs and WITHOUT them from
a fresh extract; make tools-health OK; R22 fleet extract-all 212/212 + check-all 213/213.
Metrics: main REAL 839->773, LINKED 1,150->1,256, VERBATIM 29->3, stubs 29->16, byte-identical
2,075/2,091 = 99.2%; game-code weighted 93.3% (38,748/41,534), remainder 2,786 = the open-stub
sum; fleet stubs 51->38 (frontier_classify: 39 rows incl. the data word). Verbatim manifest
33 -> 6. Docs: worklist rows + "S79 task #5", SETUP (fresh-clone obj42 commands, Makefile
blocks, exclude_audit), decision-log "S79 addendum 2", accelerators "S79 (2)", CURRENT_PHASE
S79 FINAL refreshed (census, metrics, the task #6 brief).
2026-09-04 17:56:31 -06:00
Drew T 757bd82a0f feat(phase-31): S79 #4 — scattered-.bss split at link-prepare (psyq_bss_split): SYS.o→libgpu2, VM_F.o→snd12, GS_001.o→libgs8 LINKED; libgpu_used retired
The §9.1 "scattered .bss commons" exclusion class (Phase 8 → P31) is closed 3/3. New
tools/psyq_bss_split.py (own ELF32 REL reader/writer) cuts an object's packed .bss into
per-base NOBITS pieces: bases derived from the game bytes per HI16/LO16 pair, references
walked in offset order into single-base runs, cuts snapped to symbol starts (the linker
scattered SYMBOLS), symbols moved, a LOCAL section symbol per piece inserted, relocs
retargeted with the addend rewritten in the immediates, self-diffed. It runs inside the one
prepare step shared by psyq_link.link_object / psyq_link_region.build_region /
psyq_integrate.integrate (prepare_object before classify), re-derived every build.

GS_001.o was certified "5 interleaved bases, NOT splittable" by the S77 probe, which grouped
by BASE; by RUN it is six symbol-aligned pieces. All seven cuts across the three objects are
confirmed by the other objects' by-name recoveries (_que 0x800C5510, _svm_sreg_buf
0x800B9B58, PSDBASEX/CLIP2/PSDBASEY/POSITION/GsDRAWENV). R39 negative control: 235 placed
objects across 9 curated dirs, 0 refusals, exactly 3 splits (a libcd .bss+size end pointer
refused the first build → reference problems are fatal only when a split is needed).

Wiring: yaml 800c→libgpu2, sgap_6→sgap_6+snd12, gsgap3→libgs8 (comments rewritten);
LIBGPU_ELF := .run/obj40/libgpu (curated libgpu_used retired); libgs 34 objs/8 blocks
(make_libgs.sh +GS_001); snd 63/12 (make_snd_used.py exclusions 4→3). src/800c.c and
src/gsgap3.c removed (Sony code hand-matched as REAL/verbatim), sgap_6.c keeps only
func_8003FA54; splat-emitted libgpu2.c/libgs8.c/snd12.c stubs for the no-SDK fallback.

Verified: main 143dbb89f34491258bbc27810d0a12ec8b43a8dd WITH the SDK objects and WITHOUT
them from a fresh extract; make tools-health OK; R22 fleet clean extract-all 212/212 +
check-all 213/213. Metrics: main REAL 886→839, LINKED 1,040→1,150, VERBATIM 85→29, stubs 29
(unchanged); game-code weighted 91.1% (40,895/44,870) — both terms lost the 3,667 SDK ins;
the remainder is still exactly the 3,975-ins open-stub sum. Verbatim manifest --update
200→33 rows (subtractive). Docs: cookbook §489 (+index), psyq-worklist rows + "S78 task #4",
SETUP S79 R21 table, decision-log S79 addendum, accelerators S79, CURRENT_PHASE S79 FINAL 🛑.
2026-09-04 17:19:29 -06:00
Drew T a85733a487 feat(phase-31): S78 #3 — 13 "game code" subsegs were PsyQ objects: wired LINKED (libgte 70/30, libgs 33/7, snd 62/11); main's game-code metric corrected to 91.8%
- exact tiles, 0 tokens: libgte23-26 (MSC01/02/05/09, SMP_00, FGO_01-06, PATCHGTE), libgte9 re-derived
  as SMP_05 NormalClip (SMP_06 NormalClipS = nested sub-pattern; psyq_integrate now drops nested
  placements), libgte27-30 (the libgs-gap MTX_05/07/11, REG03+REG11), libgs7 (2D_BG0+2D_BG1), snd10
  (VM_NO1), snd11 (VM_NOWON carved off sgap_8). LINKED 959->1040, REAL 912->886 (SDK inline-asm wrappers
  re-provenanced), VERBATIM 146->85, 13 TUs deleted; splat re-emits the stub records.
- main 143dbb89 WITH and WITHOUT the SDK objects. The no-SDK fallback had been red since S7x
  (CdReadyCallback called by its SDK name while the libcd stub carried func_800435B4) — curated
  CdReadyCallback = 0x800435B4, refs unified. R22 clean fleet 213/213; tools-health OK.
- METRIC CORRECTION (R35): progress.py's "MAIN game-code weighted" sig never excluded the LINKED
  objects (its comment said it did) — ~31k linked-SDK ins sat in the denominator as unmatched game
  code. Exclusion now derived LIVE from the Makefile stub lists + yaml ranges: 91.8% (44,562/48,537),
  not 59.8%; the 3,975-ins remainder equals the open-stub sum exactly.
- VM_F.o probed SPLITTABLE at .bss 0x50c (SYS.o's class -> task #4). cookbook §488; worklist S78 #3;
  decision-log + accelerators; SETUP rows.
2026-09-04 16:26:12 -06:00
Drew T a7394f44dc feat(phase-31): S78 #12 — the 800c3 "wall" band is LIBPAD 4.2.1 + LIBAPI 4.2: 46 names applied; integrate wired by subseg range; renames via ApplySymbols
- provenance: the psx loader's per-version PsyQ signature sets place PADENTRY/PADCMD/PADPORTD/
  PADSEQD (4.2), WAITRC2 (4.3), COUNTER/C114/FIRST/PAD/PATCH/CHCLRPAD (libapi 4.2) byte-exact in
  0x8005CE48-0x8005FC68 / 800c2 -> 12 of main's 29 stubs incl. all four §332 walls are Sony's
  DualShock library in reorder mode. 46 names -> symbols.us.txt (count 1081), band TUs, verbatim
  manifest, wave_exclude; firstfile/firstfile2 (4.2 naming); CdGetToc @0x800430B8 (was the Phase-21
  xdedup mislabel DecDCToutCallback). SETUP §5.1 corrected; psyq-worklist S78; cookbook §487;
  decision-log + accelerators S78; CHECKSUMS +Psy-Q_46.zip +PSYQ_SDevTC_v4.5.zip.
- psyq_integrate: --yaml maps stub<->objects by SUBSEG RANGE with an exact-tiling check and PRINTS
  the located-but-unwired residue (libgte: 13 objs / 1,264 ins) — main's LINKED build had been RED
  at HEAD since the S77 psyq_identify fix (22 libgte blocks merged to 3; gate worktrees take the
  stub fallback so it never showed); a library object's exported symbol whose recovered address the
  curated file names differently is --redefine-sym'd (R15; A66 firstfile->firstfile2).
- Ghidra: 47 MCP renames did NOT persist through the sentinel stop (R9 caught it) -> NEW
  tools/ghidra_scripts/ApplySymbols.java + tools/ghidra_apply_symbols.sh mirror the curated file
  headless with a real save: 73 renamed, R9-verified x4. SETUP inventory rows (R21).
- lint_symbol_refs: scans verbatim __asm__ bodies (`.ent\tfunc_X` is invisible to \b and to the
  string-masked scan); negative-controlled (red on the pre-fix TUs, green on the passing tree).
- R22: clean extract-all 212/212 + check-all green on the final config; main rebuilt byte-identical
  143dbb89 after the last src-only fix -> 213/213; tools-health OK.
2026-09-04 15:57:06 -06:00
Drew T ddbe7f455c docs(R31): S77 decision-log — the frontier is wall-proof work now, and R61's twelve defects
Also: cookbook §486 (the main -O0 island carve, five coupled pieces), SETUP rows
for psyq_bss_probe and make sig-main-oracle (R21).
2026-09-03 22:48:58 -06:00
Drew T b05085b67a docs(cookbook): §485 the placement map was parsing a pretty-printer — 25 objects invisible, not absent 2026-09-03 22:37:18 -06:00
Drew T 5399845172 feat(psyq_bss_probe): a Phase-8 link exclusion re-derived from the bytes — 3 of 4 objects are not blocked as recorded
The yaml has excluded SYS.o/GS_001.o/2D_BG0.o/VM_NO1.o from the LINKED build
since Phase 8 for 'scattered-.bss commons ... no single NOLOAD base reproduces
it'. Every word of that is true, and it does not imply unlinkable.

psyq_bss_probe derives each object's .bss bases FROM THE BYTES (for each
HI16/LO16 pair against the bare .bss section, the object's immediates give the
addend and the game's give the resolved address, so base = resolved - addend)
and then asks the unasked question: are the offset ranges DISJOINT?

  SYS.o     3,109 ins  2 bases  0x0000-0x0044 @ 0x80078830
                                0x0148-0x0150 @ 0x800c53cc  -> SPLITTABLE at 0x148
  GS_001.o    384 ins  5 bases  interleaved                 -> the genuine wall
  2D_BG0.o    526 ins  NO .bss                              -> reason cannot apply
  VM_NO1.o    305 ins  NO .bss                              -> reason cannot apply

§9.2's escape (weaken the .bss symbol, --defsym it) really cannot reach these —
a relocation against the bare SECTION has no name to defsym — and that is what
made 'unlinkable' look like the conclusion. But a section reference only needs
the section PLACED, and a section can be split.

Completeness checked before believing it (R32): the probe counts .bss refs from
EVERY section; SYS.o's .data has zero, so the two-way split covers every
reference. Placement is derived, not configured — the object is located by
masking relocated fields and requiring a UNIQUE match, which independently
reproduced SYS.o @ 0x80059234 / 3,109 ins, agreeing with both the yaml subseg
bounds and the manifest's psyq_identify count.

Incidental: src/800c.c is 100% SYS.o (its span is exactly the object's .text
size), despite the subseg comment calling it '-O2 game code'.

Cookbook §484; yaml comment corrected in the same change.
2026-09-03 22:07:31 -06:00
Drew T 46097c2339 feat(permuter_sweep): hand a wave's NEARs to the permuter, and correct §479 a second time
THE GAP: a drafting agent is briefed to STOP at a plateaued permuter-class
residual — right, since an agent grinding a register permutation burns tokens
for nothing — so every SCHEDULE-REORDER/DELAY-SLOT/REGALLOC-PERM residual lands
unattempted while the local permuter costs no tokens. In S77 the hand-off
happened only when I remembered.

THE CORRECTION THIS TOOL FORCED. §479 v2 claimed the predictor of a permuter win
was 'prior-attempt history: all 3 winners were drafts nobody had worked'.
Building the selector on that claim refuted it immediately: journal_notes
reports prior attempts for ALL EIGHT known runs, winners included (2, 3, 3).
What I had eyeballed was the DRAFT HEADER narrative, a different corpus — the
winners came from a recovery pile whose files carry no header journal. That is
provenance, not evidence.

So the tool selects on the two NECESSARY conditions only (small residual, a
match_one class the permuter can search), prints prior-attempt counts as
information, and puts the unvalidated filter behind --skip-ground, off by
default so it cannot silently discard good work (R39).

AND A BUG IN THE NEW TOOL, caught by cross-checking against known-true numbers:
wave_results globbed journals across EVERY session and did last-write-wins on a
bare function name, so an older wave's row won and carried its stale
draft_path — the sweep reported func_8002AC98 at closeness 73 and func_80015608
at 65 while both drafts measure 1 and 3. R48 inside a brand-new tool. Journals
are now read newest-last and rows are kept only when the draft lives under this
wave's directory. After the fix all seven cross-checkable residuals agree with
what the agents independently reported (9, 8, 7, 3, 3, 1, 1).

§479 now states the honest position: ~3 in 8 at <=4, no validated predictor, and
a note that a yield table is evidence while a story about why is a hypothesis
needing its own negative control before it goes in the cookbook.
2026-09-03 21:09:59 -06:00
Drew T 984b50215f docs(cookbook): §483 the S77w wave harvest — six levers, four from banked bodies 2026-09-03 20:46:54 -06:00
Drew T 3b959596f6 docs(cookbook): correct §479's yield curve — the permuter is 3/8 at <=4, not 3/3
The first version of §479, written earlier this session on 3 data points, said
the permuter is a one-shot at <=4 mismatched. Five more runs make it 3 of 8,
and the failures are not marginal: a residual of 1 failed while a residual of 4
banked, so mismatch count predicts nothing.

The real predictor is prior-attempt history. All three winners were drafts
nobody had worked. Every failure was a body an agent or prior wave had already
optimised (5, 6 and 4 prior levers respectively). A draft a competent search has
plateaued is plateaued for the permuter too — its wins come from unexplored
neighbourhoods, not from small numbers.

Same predictor as §479's triage paragraph, reached from the opposite direction.
2026-09-03 20:43:32 -06:00
Drew T f7702eac69 docs(cookbook): §482 two independent re-ties, ordered — a re-tie is a scheduling barrier with a position 2026-09-03 20:31:47 -06:00
Drew T 9df0cd29dd docs(cookbook): §481 conflicting types is a SAME-SCOPE error; across scopes it degrades to a warning
The escape hatch for the declaration-conflict class the reconcile/sync ladder
cannot reach — two anonymous struct typedefs in one TU are never compatible in
C89, so no duplicate spelling works, but block scope turns the error into the
warning the build already emits elsewhere. From main:func_8001FC08 (400 ins),
whose body was solved in S76 and had never banked because nobody asked why.
2026-09-03 20:17:57 -06:00
Drew T be966bf095 docs(cookbook): §479 the permuter's measured yield curve (one-shot at <=4, plateau above ~10); §480 a static blocker class the real pipeline removes is a phantom 2026-09-03 19:45:55 -06:00
Drew T c61c7ed93f docs(cookbook): §477 the self_decl_tu lane is mechanical (16/16 banked); §478 a verbatim draft is the strongest false signal a scoper can emit 2026-09-03 19:19:29 -06:00
Drew T e0229af908 docs: restore §462/§463, record S76 tooling in SETUP, add the gate-triage step to the playbook
Three gaps found by auditing instead of asserting.

§462 and §463 were MISSING from the cookbook although their commits are
ancestors of HEAD and added 37 and 34 lines. Same silent loss as §464, which
I caught only because I happened to re-check the three sections I had just
written. Both restored from their own commits; all of §460-§476 now verified
present one by one.

SETUP.md had no record of either new tool (R21). Added gate_main_parallel and
sync_tu_decls, plus the oracle corrections a reader needs in order to
re-judge older verdicts: the REORDER_TUS routing in match_one/rtu_match, the
draw_waves --main no-op, the verbatim-draft refusals at three points, and the
§179-C conversion guard.

The playbook had nothing on what to do when a gate banks far less than it
staged — which is exactly what happened this session. Added the triage step:
probe first (CC1-FAIL 16 / DIFF 18 / MATCH 6 on main's 40), sync declarations
for the plumbing class, hand self_decl_tu to cast_self_callers, and expect a
cascade because every bank changes the declaration environment for the drafts
that follow it.
2026-09-03 17:41:43 -06:00
Drew T 920f8bac35 docs(cookbook): §476 — a hard-register pin strips nonzero_bits and reg_n_sets==1
From the S76 Fable agent on func_800226C0 — 670 instructions, the largest
function in the project, matched at closeness 0.

Explains WHY pins so often hurt, completing the arc of §461/§462/§471:

  (a) A pinned hard register carries no nonzero_bits, so combine cannot fold
      sext(HImode t) into a copy — which is exactly what the target's 228E4
      addu/beqz/addu chain is, with cse2 reusing it as the loop multiplier.
      The $18 pin that looked obvious was what prevented the fold; one plain
      uninitialised s16 t (mul left an unpinned pseudo) unlocked it.
  (b) A pin makes reg_n_sets != 1, so birthing_insn_p refuses the §199-A
      boost and the value is placed first — a whole-block schedule shift.
      Unpinning o/col/sh23/abr fixed the prologue order and two ties.

Rule: if a residual involves a sign/zero-extend fold or a first-in-block
placement, REMOVE pins before adding them.
2026-09-03 16:29:55 -06:00
Drew T 3db8b2b117 docs(cookbook): §475 — the "memory" fence as a cse invalidator; (b*3)<<3 over b*24
From the S76 func_8002FF0C agent (166 ins -> MATCH, verified in-TU with a
spliced src/800_b.c compiling rc=0 and all 63 relocs matching).

__asm__ __volatile__("" ::: "memory") is a CSE MEMORY-TABLE invalidator, not
only a scheduling fence, and the colon-less __asm__("") does NOT substitute:
it forces D_800A46D2 to be re-read rather than folded to sign_extend(r), and
without it the function is exactly two instructions short. Pairs with §464
lever 4 — same two spellings, register half there, memory half here.

Write (b*3)<<3, not b*24: expand_mult never honours its target, so b*24
leaves a move copy that survives into the join block and costs a sixth
callee-saved register plus a 0x30 frame. A top-level LSHIFT_EXPR expands into
the variable's own pseudo. General for any constant multiply factoring as
odd<<n.

Independently confirms §470's 'two distinct locals for the same b*24' on a
different function via a different agent — treat as established.

And the house array spelling can be the defect: D_800A46D2 must be scalar at
block scope; extern s16 D_800A46D2[] forces la for both accesses and costs 12
mismatches. A fleet-consensus declaration is a prior, not a law.
2026-09-03 16:21:35 -06:00
Drew T 77dc52c633 docs(cookbook): §474 — a PROVED -O0 floor from split_tree + stupid.c
From the S76 func_80011380 agent, which upgraded an empirical closeness-6
plateau to a floor proved from the gcc sources in tools/reference/.

The target needs MULT(MULT(i,2),2) unmerged, but fold-const.c:882 split_tree
decomposes any MULT whose op1 is TREE_CONSTANT — all 20 spellings measured
collapse to one sll 2, and STRIP_NOPS eats NON_LVALUE_EXPR so the usual |0
+0 *1 &~0 ^0 >>0 shields cannot protect it.

Both escapes cost an instruction, each for a named reason: a stmt-expr gives
the exact 5-insn RTL but its BLOCK_END note breaks the adjacency that
stupid.c:497-508 needs for a copy to conflict with its source, so the copy
self-coalesces and final.c deletes it; and (t = i*2)*2 with register s32 t
reaches exact length and shape but expand_decl's zero-byte (use) brackets
make t the longest interval, seizing $v0 and rotating the register ring.

Clinching fact that the target has no variable there: its 4th insn
sll $v1,$a0,1 reads $a0, not insn 2's dest.

Bonus: expand_binop allocates the PLUS dest before force_reg'ing the symbol,
so the symbol pseudo loses stupid_reg_compare's tie-break — that is the
la-on-$a0 colour.

Recorded as the TEMPLATE for a wall claim: name the pass, cite file and line,
measure each escape, and give the byte fact ruling out the alternative. A
wall asserted without that is a belief (§473).
2026-09-03 16:20:59 -06:00