Skip to content

Make BoundExpression reference-counted and identity-keyed - #9492

Draft
joseph-isaacs wants to merge 2 commits into
developfrom
claude/boundexpression-arc-box-refactor-fcty3v
Draft

Make BoundExpression reference-counted and identity-keyed#9492
joseph-isaacs wants to merge 2 commits into
developfrom
claude/boundexpression-arc-box-refactor-fcty3v

Merge branch 'develop' into claude/boundexpression-arc-box-refactor-f…

09cf918
Select commit
Loading
Failed to load commit list.
CodSpeed HQ / CodSpeed Performance Analysis failed Aug 19, 2026 in 0s

1 benchmark regressed

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

⚠️ Different runtime environments detected

Some benchmarks with significant performance changes were compared across different runtime environments,
which may affect the accuracy of the results.

Open the report in CodSpeed to investigate

⚡ 16 improved benchmarks
❌ 1 regressed benchmark
✅ 1982 untouched benchmarks
⏩ 474 skipped benchmarks1

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Mode Benchmark BASE HEAD Efficiency
WallTime words_gather_scalar[65536] 8.3 µs 9.4 µs -12.03%
Simulation filter_random_by_mostly_true[250000] 237.2 µs 207.1 µs +14.52%
Simulation filter_powerlaw_by_mostly_true[250000] 237.2 µs 207.2 µs +14.48%
Simulation filter_random_by_random[250000] 212.9 µs 189.2 µs +12.54%
Simulation filter_powerlaw_by_random[250000] 212.9 µs 189.2 µs +12.54%
Simulation density_sweep_random[0.9] 115.6 µs 103.6 µs +11.63%
Simulation filter_random_by_mostly_true[100000] 116.4 µs 104.3 µs +11.58%
Simulation density_sweep_random[0.95] 116.2 µs 104.3 µs +11.49%
Simulation filter_powerlaw_by_mostly_true[100000] 116.9 µs 105 µs +11.39%
Simulation density_sweep_dense_runs[0.9] 115.4 µs 103.6 µs +11.34%
Simulation density_sweep_dense_runs[0.95] 116.3 µs 104.5 µs +11.27%
Simulation chunked_varbinview_opt_into_canonical[(10, 100)] 669.6 µs 604.4 µs +10.78%
Simulation filter_random_by_power_law[250000] 197.2 µs 178.1 µs +10.73%
Simulation filter_powerlaw_by_power_law[250000] 197.4 µs 178.3 µs +10.69%
Simulation compress_fsst[(500, 64, 4)] 517 µs 469.4 µs +10.13%
Simulation filter_random_by_mostly_false[250000] 190.2 µs 172.8 µs +10.05%
Simulation filter_powerlaw_by_mostly_false[250000] 190.3 µs 173 µs +10.02%

Tip

Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.


Comparing claude/boundexpression-arc-box-refactor-fcty3v (09cf918) with develop (a4af10a)2

Open in CodSpeed

Footnotes

  1. 474 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports.

  2. No successful run was found on develop (6800829) during the generation of this report, so a4af10a was used instead as the comparison base. There might be some changes unrelated to this pull request in this report.