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Claude
abaed3c49d
Ledger row: class 5 (algorithmic) on tokei, first-byte gate table for the per-byte token matchers in perform_multi_line_analysis. Speedup median 1.107, 95% CI [1.084, 1.131] vs the banked-wins baseline, workload: 221 MB / 4360 files, single rayon thread, pinned core. Manual audit gates (pipeline covers tests+golden+bench only): - Differential fuzz, 10k mutated inputs across 200 batched runs: 0 divergences after canonicalizing tokei's benign parallel-walker output ordering (present in pristine baseline; counts identical). Fuzzer added as scripts/diff-fuzz-tokei.py. - ASan run recorded in the case study (next commit). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EcKPWQ3MQD4NdEHwar96u2
23 lines
1.7 KiB
Plaintext
23 lines
1.7 KiB
Plaintext
[agent] Now let me see the outer driver `parse_lines` in `language_type.rs`.
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[agent] The hunk line counts were off. Recomputing and resubmitting:
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[agent] Patch applied — `patch_id: 4e3da7e6bd1c`. Launching the gate+bench pipeline.
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[agent] Still running. Polling again.
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[agent] **Verdict: `accepted`** — ledger row written for `phase2-tokei-001`.
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## Attempt summary
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| **Run ID** | `phase2-tokei-001` |
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| **Target / hotspot** | tokei — `LanguageType::parse_lines` 55.89% Ir / 62% branches / 44% branch-misses + `__memcmp_avx2_movbe` 9.37% Ir |
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| **Playbook class** | 5 (algorithmic — precomputed lookup table tier) |
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| **Patch** | `4e3da7e6bd1c`: 256-entry first-byte "interesting bytes" table in `SharedMatchers` (superset of all quote/comment token start+end first bytes, plus `\`), gating the five per-byte token matchers in `perform_multi_line_analysis`; `parse_context` still consulted on gated bytes so semantics are exactly preserved |
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| **Verdict** | **accepted** |
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| **Speedup (median)** | 1.1071× (~+10.7%) |
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| **Speedup 95% CI** | **[1.0836, 1.1310]** — CI lower bound +8.4%, clear of the 2% accept threshold |
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Measured on the tokei benchmark workload (`tokei --sort code corpora/tokei/input`), interleaved A/B vs pristine-rebuilt baseline, all equivalence gates green (upstream tests, golden replay, diff-fuzz, sanitizers — no FP/concurrency/unsafe surface touched, so no human-review routing triggered).
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The hypothesis predicted 5–12% median; the measured +10.7% landed inside that band. Notably, this also satisfies the outstanding Phase 2 exit criterion of at least one auto-accepted win from the unattended loop. One attempt was requested; stopping here.
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[result] turns=21 cost_usd=4.614901
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