perf(fastlanes): fuse bit-packed compare into a transposed mask + untranspose#8239
Merged
CodSpeed HQ / CodSpeed Performance Analysis
succeeded
Jun 4, 2026 in 0s
Performance Gate Passed
⚠️ 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.
⚡ 239 improved benchmarks
✅ 1268 untouched benchmarks
Performance Changes
| Mode | Benchmark | BASE |
HEAD |
Efficiency | |
|---|---|---|---|---|---|
| ⚡ | Simulation | compare[1] |
170.6 µs | 58.5 µs | ×2.9 |
| ⚡ | Simulation | compare[2] |
171.9 µs | 59.7 µs | ×2.9 |
| ⚡ | Simulation | compare[1] |
172.8 µs | 60.2 µs | ×2.9 |
| ⚡ | Simulation | compare[1] |
163.3 µs | 57.2 µs | ×2.9 |
| ⚡ | Simulation | compare[1] |
165.9 µs | 58.7 µs | ×2.8 |
| ⚡ | Simulation | compare[2] |
165 µs | 58.9 µs | ×2.8 |
| ⚡ | Simulation | compare[2] |
167.8 µs | 60.5 µs | ×2.8 |
| ⚡ | Simulation | compare[2] |
176.3 µs | 63.8 µs | ×2.8 |
| ⚡ | Simulation | compare[3] |
178.6 µs | 66.8 µs | ×2.7 |
| ⚡ | Simulation | compare[3] |
180.7 µs | 68.2 µs | ×2.7 |
| ⚡ | Simulation | compare[3] |
171.7 µs | 65.5 µs | ×2.6 |
| ⚡ | Simulation | compare[4] |
181.6 µs | 69.3 µs | ×2.6 |
| ⚡ | Simulation | compare[3] |
174.1 µs | 66.9 µs | ×2.6 |
| ⚡ | Simulation | compare[4] |
183.9 µs | 71.3 µs | ×2.6 |
| ⚡ | Simulation | compare[4] |
174.6 µs | 68.5 µs | ×2.5 |
| ⚡ | Simulation | compare[4] |
177.2 µs | 69.9 µs | ×2.5 |
| ⚡ | Simulation | compare[5] |
187.1 µs | 75.2 µs | ×2.5 |
| ⚡ | Simulation | compare[5] |
188.9 µs | 76.2 µs | ×2.5 |
| ⚡ | Simulation | compare[5] |
182.2 µs | 74.9 µs | ×2.4 |
| ⚡ | Simulation | compare[6] |
190.9 µs | 78.6 µs | ×2.4 |
| ... | ... | ... | ... | ... | ... |
ℹ️ Only the first 20 benchmarks are displayed. Go to the app to view all benchmarks.
Tip
Curious why this is faster? Comment @codspeedbot explain why this is faster on this PR, or directly use the CodSpeed MCP with your agent.
Comparing claude/confident-hamilton-mZIEo (bd3fbaa) with develop (583b003)
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