Add UnionValue and UnionScalar#8791
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CodSpeed HQ / CodSpeed Performance Analysis
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Jul 17, 2026 in 0s
Performance Regression: -17.17%
❌ 3 regressed benchmarks
✅ 1667 untouched benchmarks
⏩ 53 skipped benchmarks1
Warning
Please fix the performance issues or acknowledge them on CodSpeed.
Performance Changes
| Mode | Benchmark | BASE |
HEAD |
Efficiency | |
|---|---|---|---|---|---|
| ❌ | Simulation | copy_nullable[65536] |
1 ms | 1.4 ms | -24.25% |
| ❌ | Simulation | copy_non_nullable[65536] |
908.8 µs | 1,089.5 µs | -16.58% |
| ❌ | Simulation | compact_sliced[(4096, 90)] |
780.3 ns | 867.8 ns | -10.08% |
Tip
Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.
Comparing ct/union-scalar (dd92c91) with develop (e6eeaae)
Footnotes
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53 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. ↩
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