CachedIds for functions

[myrrc]

Re-creating interner IDs is an issue for random access

[codspeed-hq]

Merging this PR will improve performance by 11.68%

⚠️ 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.

⚡ 2 improved benchmarks
✅ 1273 untouched benchmarks

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
⚡	Simulation	baseline_lt[16, 65536]	245.5 µs	216.6 µs	+13.35%
⚡	WallTime	cuda/bitpacked_u16/unpack/5bw[100M]	613.2 µs	557.3 µs	+10.03%

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.

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_{Comparing myrrc/random-accesser-reuse (1701c52) with develop (b990831)}