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Accept decimal children in Widen - #10946

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ct/decimal-interleavefrom
ct/decimal-widen
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Accept decimal children in Widen#10946
connortsui20 wants to merge 7 commits into
ct/decimal-interleavefrom
ct/decimal-widen

Tidy decimal Widen execution, casts and tests

9577faf
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CodSpeed / CodSpeed Performance Analysis failed Oct 28, 2026 in 1m 29s

Performance Regression: -27.52%

2 warnings

⚠️ Walltime results may be unreliable

Some benchmarks used the Walltime instrument outside CodSpeed Macro Runners, which can make the results inconsistent.

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⚠️ 4 benchmarks are dominated by system calls

System calls cannot be simulated consistently and are left out of the measure. The reported value understates the real cost. Switch to the Walltime instrument to measure them.

Learn more about system calls

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⚡ 6 improved benchmarks
❌ 7 regressed benchmarks
✅ 2261 untouched benchmarks
🆕 42 new benchmarks
⏩ 370 skipped benchmarks1
🗄️ 30 archived benchmarks run2

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Mode Benchmark BASE HEAD Efficiency
❌ CPU Simulation filter_powerlaw_by_random[10000] 670 ns 31,971 ns -97.9%
❌ Walltime mul_u64_nonnull_neon 20.1 µs 40 µs -49.79%
❌ CPU Simulation bench_compare_varbin[(50000, 2)] 133.8 µs 162 µs -17.37%
❌ CPU Simulation bench_compare_varbin[(50000, 64)] 135.6 µs 163.9 µs -17.31%
❌ CPU Simulation bench_compare_sliced_dict_varbinview[(7500, 10000)] 200.8 µs 227.7 µs -11.78%
❌ CPU Simulation bench_compare_sliced_dict_varbinview[(10000, 10000)] 207 µs 233.8 µs -11.47%
❌ CPU Simulation bench_compare_sliced_dict_varbinview[(1000, 10000)] 79.9 µs 90.2 µs -11.37%
⚡ CPU Simulation widen_nullable[16384] 359.4 µs 224.8 µs +59.88%
⚡ CPU Simulation random_i8[0.01] 123.3 µs 98.9 µs +24.66%
⚡ CPU Simulation take[(16, 8, 1)] 119.5 µs 106.2 µs +12.56%
⚡ CPU Simulation max_f64 315.2 µs 281.2 µs +12.07%
⚡ Walltime add_constant_shapes_neon[(32768, PerRowConstant)] 15.7 µs 14.2 µs +10.57%
⚡ Walltime add_constant_shapes_neon[(32768, ConstantPerRow)] 15.7 µs 14.2 µs +10.19%
🆕 CPU Simulation cast_widen[p10_childp5_canonical] N/A 913.8 µs N/A
🆕 CPU Simulation cast_widen[p10_childp5_widen] N/A 789.7 µs N/A
🆕 CPU Simulation cast_widen[p18_childp9_canonical] N/A 913.3 µs N/A
🆕 CPU Simulation cast_widen[p18_childp9_widen] N/A 790.1 µs N/A
🆕 CPU Simulation cast_widen[p38_childp18_canonical] N/A 1.8 ms N/A
🆕 CPU Simulation cast_widen[p38_childp18_widen] N/A 1.5 ms N/A
🆕 CPU Simulation compare_constant_out_of_range[p10_childp5_canonical] N/A 307.3 µs N/A
... ... ... ... ... ...

ℹ️ Only the first 20 benchmarks are displayed. Go to the app to view all benchmarks.

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 (9577faf) with ct/decimal-interleave (c0eb004)

Open in CodSpeed

Footnotes

  1. 370 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. 30 benchmarks were run, but are now archived. If they were deleted in another branch, consider rebasing to remove them from the report. Instead if they were added back, click here to restore them. ↩

View more details on CodSpeed