mirror/BFM-decomp
1
0
Fork 0
mirror of https://github.com/Druthulu/BFM-decomp synced 2026-09-26 21:36:06 -04:00
Code Issues Packages Projects Releases Wiki Activity

docs(phase-17): T6 — permuter yields 0 whole-binary matches (isolated != whole-binary TU)

Browse Source 
The permuter closes isolated near-misses (3-4/8 in <=75s; converted winners match_one
MATCH 17/53/54 ins) but 0/4 survive the whole-binary gate. Root cause (R17): the isolated
compile context differs from the whole-binary TU (callee inlining in the one-big-file
077.c), so match_one's "isolated == whole-binary" assumption is false for these and the
permuter optimizes the wrong target. This is the mechanism behind Phase 16's "42% mirage".
All 5 avenues tested: T2=0, T3=+0.52% (banked), T4/T5 byte-neutral, T6=0. The harness
ceiling did not rise to eureka. NEXT: T7 go/no-go (Tier-1/Max).
This commit is contained in:
Drew T
2026-06-19 13:20:23 -06:00
parent 1431b523a4
commit 40f2bc8bdc
1 changed files with 11 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
phase-ends/CURRENT_PHASE.md
+11 -3
View File
@@ -59,9 +59,13 @@ regressions, not a fixed-% gate.)
- [ ] **T5 — Avenue 4: struct inference + emulator field-typing** [Max + Drew emu]. Infer actor struct from
m2c field-access union; Drew-driven PCSX-Redux field-typing (R10); feed via T4 context. Scoped to the
structural-miss + fn-ptr buckets + comprehension.
- [ ] **T6 — Avenue 5: permuter tuning + attended trials + known-answer ladder** [mixed; R26 prompt if breadth].
After each of T2–T5, bounded attended pipeline pass on a fixed sample (`p16_known_answer`/`p16_improve`);
tune permuter (`-j` on 32 threads); track ceiling; set the "eureka" threshold with Drew from trial data.
- [x] **T6 — Avenue 5: permuter validation** [mixed]. **DONE 2026-06-19 — 0 whole-binary yield.** The
permuter CLOSES isolated near-misses (3-4/8 in ≤75s; converted winners match_one MATCH 17/53/54 ins) but
**0/4 survive the whole-binary gate.** Root-caused (R17): the isolated compile context ≠ the whole-binary
TU (callee inlining in the one-big-file 077.c), so match_one's "isolated == whole-binary" assumption is
FALSE for these — the permuter optimizes the wrong target and matches don't transfer. This is the mechanism
behind Phase 16's "42% mirage." Making the permuter whole-binary-faithful = recompile the 7k-line TU per
candidate = prohibitive for a search. **The last byte lever yields ~0.**
- [ ] **T7 — Go/no-go on the unattended run + phase close** [Max]. Present measured ceiling + projected run
yield → decide; if GO deploy `auto_driver`+supervisor supervised-first; fold findings; PhaseEnd (R18/R25/R19).
@@ -119,3 +123,7 @@ types — 67% reach incl. the giants) → T6 (validate the 146 permuter candidat
decomp.me win, NOT a byte lever** (deep-research caveat confirmed; struct-core-pivot.md updated). Emulator
pass PAUSED (Drew). **NEXT: T6 — validate the permuter on the 146 PERMUTER_CLASS near-misses (the last
untested byte lever), then T7 go/no-go.**
- 2026-06-19: **T6 DONE — permuter yields 0 whole-binary matches.** Closes isolated near-misses but the
winners don't transfer (isolated≠whole-binary TU; callee inlining). All 5 avenues now tested: T2=0,
T3=+0.52% (banked), T4/T5 byte-neutral, T6=0. **The harness ceiling did NOT rise to eureka.** NEXT: **T7 —
go/no-go (recommend NO-GO on the big unattended run) + PhaseEnd. Tier-1/Max — prompt Drew for /effort Max.**