Use array_slots macro instead of manual slot indices

[myrrc]

Remove manual slot indices in favor of codegenerated ones

[codspeed-hq]

Merging this PR will degrade performance by 14.44%

⚠️ 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
❌ 2 regressed benchmarks
✅ 1887 untouched benchmarks
⏩ 3 skipped benchmarks¹

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
❌	Simulation	copy_nullable[65536]	578.8 µs	1,033.3 µs	-43.98%
❌	Simulation	copy_non_nullable[65536]	799 µs	913.6 µs	-12.55%
⚡	Simulation	decode_varbin[(1000, 4)]	34.3 µs	26.8 µs	+27.83%

Tip

Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing myrrc/array-slots-macro (1c5cc67) with develop (3a098b4)}

Footnotes

1. 3 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. ↩

[joseph-isaacs]

snap: #8912

[myrrc]

Let's go with your PR