perf: branchless primitive zip kernel #8270
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CodSpeed HQ / CodSpeed Performance Analysis
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Jun 5, 2026 in 0s
Performance Regression: -9.56%
⚠️ 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
❌ 4 regressed benchmarks
✅ 1510 untouched benchmarks
🆕 2 new benchmarks
Warning
Please fix the performance issues or acknowledge them on CodSpeed.
Performance Changes
| Mode | Benchmark | BASE |
HEAD |
Efficiency | |
|---|---|---|---|---|---|
| ❌ | Simulation | bitwise_not_vortex_buffer_mut[128] |
216.9 ns | 275.3 ns | -21.19% |
| ❌ | Simulation | bitwise_not_vortex_buffer_mut[1024] |
278.6 ns | 336.9 ns | -17.31% |
| ❌ | Simulation | bitwise_not_vortex_buffer_mut[2048] |
342.2 ns | 400.6 ns | -14.56% |
| ❌ | Simulation | chunked_varbinview_canonical_into[(100, 100)] |
274.6 µs | 309.3 µs | -11.25% |
| ⚡ | Simulation | chunked_varbinview_canonical_into[(1000, 10)] |
198.2 µs | 161.9 µs | +22.47% |
| 🆕 | Simulation | nonnull |
N/A | 252.5 µs | N/A |
| 🆕 | Simulation | nullable |
N/A | 285.2 µs | N/A |
Tip
Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.
Comparing claude/primitive-branchless-zip (bdc1c4b) with claude/bool-branchless-zip (7ad4b18)
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