Install libc debug symbols for codspeed benchmarks

[AdamGS]

Summary

Install libc's debug symbols for codspeed runs, to get better symbolication for some of the code we end up calling.

For example, for the noisy chunked_bool_canonical_into we currently get (note the unknown spans on the left):

With this change we get (note all the new blue spans, other colors are just noise):

They include both memory allocation function but often more useful to us - SIMD instructions! On this PR's runs with a quick look I've found:

• _int_malloc
• malloc_consolidate
• __memset_avx2_unaligned_erms
• __memcpy_avx_unaligned_erms
• __memcmp_avx2_movbe
• tcache_get_n

[codspeed-hq]

Merging this PR will degrade performance by 17.99%

⚠️ 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.

❌ 6 regressed benchmarks
✅ 1520 untouched benchmarks
⏩ 10 skipped benchmarks¹

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
❌	Simulation	chunked_bool_canonical_into[(1000, 10)]	20.4 µs	35.4 µs	-42.42%
❌	Simulation	chunked_varbinview_into_canonical[(1000, 10)]	176.8 µs	212.9 µs	-16.98%
❌	Simulation	chunked_varbinview_canonical_into[(100, 100)]	272.7 µs	307.9 µs	-11.41%
❌	Simulation	encode_varbin[(1000, 4)]	142.9 µs	159.9 µs	-10.61%
❌	Simulation	encode_varbin[(1000, 8)]	143.6 µs	160.6 µs	-10.61%
❌	Simulation	encode_varbin[(1000, 32)]	148.5 µs	165.2 µs	-10.09%

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 adamg/codspeed-libc-dbg (b4882ac) with develop (c6a0b7b)}

Footnotes

1. 10 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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