ffi: create bool arrays

[myrrc]

• add vx_bool_view and BoolView for view over bitpacked booleans.
• Allow constructing from bool views for C and C++ api.
• Allow access to BoolView for PrimitiveView instead of per-element
  access.
• Make vx_array_data_ptr_bool return vx_bool_view.

[github-actions]

Polar Signals Profiling Results

Latest Run

Status	Commit	Job	Attempt	Link
🟢 Done	ae69ed6		1	Explore Profiling Data

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[github-actions]

Verdict: No clear signal (low confidence)
Attributed Vortex impact: +5.1%
Engines: DataFusion No clear signal (+9.7%, medium confidence) · DuckDB No clear signal (+0.7%, low confidence)
Vortex (geomean): 0.999x ➖
Parquet (geomean): 0.975x ➖
Shifts: Parquet (control) -2.5% · Median polish +0.2%

How to read Verdict and Engines

• Verdict: Overall PR-level signal after subtracting baseline drift estimated from Parquet control rows. It can be Likely improvement, Likely regression, or No clear signal.
• Engines: Per-engine attribution. DataFusion is compared against DataFusion/Parquet controls; DuckDB is compared against DuckDB/Parquet controls. This answers whether each engine improved or regressed independently.
• Confidence: Based on directional consistency, share of rows above the noise floor, and control-run noise.

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datafusion / vortex-file-compressed (1.043x ➖, 0↑ 0↓)

name	PR ae69ed6 (ns)	base c0d1a4e (ns)	ratio (PR/base)
vortex_q00/datafusion:vortex-file-compressed	10222872	9821687	1.04
vortex_q01/datafusion:vortex-file-compressed	6523644	6238822	1.05

datafusion / parquet (0.951x ➖, 0↑ 0↓)

name	PR ae69ed6 (ns)	base c0d1a4e (ns)	ratio (PR/base)
vortex_q00/datafusion:parquet	20445432	21655580	0.94
vortex_q01/datafusion:parquet	4664979	4870956	0.96

duckdb / vortex-file-compressed (1.006x ➖, 0↑ 0↓)

name	PR ae69ed6 (ns)	base c0d1a4e (ns)	ratio (PR/base)
vortex_q00/duckdb:vortex-file-compressed	10484482	10494664	1.00
vortex_q01/duckdb:vortex-file-compressed	6432444	6351326	1.01

duckdb / parquet (0.999x ➖, 0↑ 0↓)

name	PR ae69ed6 (ns)	base c0d1a4e (ns)	ratio (PR/base)
vortex_q00/duckdb:parquet	23613829	23499817	1.00
vortex_q01/duckdb:parquet	9490562	9559125	0.99

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No file size changes detected.

[codspeed-hq]

Merging this PR will degrade performance by 5.03%

⚠️ 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.

⚡ 1 improved benchmark
❌ 2 regressed benchmarks
✅ 2194 untouched benchmarks
⏩ 218 skipped benchmarks¹

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
❌	WallTime	dict_canonicalize_gt_u8_avx2[16000000]	8 ms	9.9 ms	-19.81%
❌	WallTime	words_gather_scalar_avx2[65536]	8.3 µs	9.4 µs	-11.95%
⚡	WallTime	arrow_checked_add_u32_avx2[16384]	21.4 µs	17.6 µs	+21.29%

Tip

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

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_{Comparing myrrc/ffi-bool-array (f72d191) with develop (d1fe2dc)}

Footnotes

1. 218 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. ↩