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Speed up the decimal widening copy - #10989
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Merged
CodSpeed / CodSpeed Performance Analysis
failed
Oct 30, 2026 in 0s
3 benchmarks regressed
1 warning
⚠️ Walltime results may be unreliableSome benchmarks used the Walltime instrument outside CodSpeed Macro Runners, which can make the results inconsistent.
⚡ 5 improved benchmarks
❌ 3 regressed benchmarks
✅ 2310 untouched benchmarks
Warning
Please fix the performance issues or acknowledge them on CodSpeed.
Performance Changes
| Mode | Benchmark | BASE |
HEAD |
Efficiency | |
|---|---|---|---|---|---|
| ❌ | CPU Simulation | missing_stats[16] |
67.2 µs | 85.1 µs | -20.99% |
| ❌ | CPU Simulation | encode_primitives[u8, (2000, 4)] |
134.8 µs | 163.7 µs | -17.67% |
| ❌ | CPU Simulation | random_i8[0.01] |
99 µs | 113.2 µs | -12.55% |
| ⚡ | CPU Simulation | filter_powerlaw_by_random[10000] |
1,125.5 ns | 583.5 ns | +92.87% |
| ⚡ | Walltime | i128_to_i256_neon |
14.4 µs | 10.5 µs | +37.35% |
| ⚡ | Walltime | i64_to_i128_neon |
13.5 µs | 10.3 µs | +30.78% |
| ⚡ | CPU Simulation | take_filter_primitive_small_uncached_random_mask_random_indices[4096, 10] |
24.5 µs | 20.9 µs | +17.22% |
| ⚡ | CPU Simulation | max_f64 |
312.9 µs | 283.2 µs | +10.48% |
Tip
Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.
Comparing ct/decimal-widen-copy (0da7340) with develop (1850cab)
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