feat(allocator): add Box::from_non_null method

[overlookmotel]

Add an unsafe method Box::from_non_null which creates a Box from a pointer.

[overlookmotel]

• perf(allocator/bitset): store bits in Box<[usize]> #13455
• feat(allocator): add Box::from_non_null method #13454 👈 (View in Graphite)
• perf(allocator/bitset): initialize BitSet with memset #13451
• perf(allocator/bitset): store bits as usizes #13450
• feat(allocator): introduce BitSet type #13449
• main

---

How to use the Graphite Merge Queue

Add either label to this PR to merge it via the merge queue:

• 0-merge - adds this PR to the back of the merge queue
• hotfix - for urgent hot fixes, skip the queue and merge this PR next

You must have a Graphite account in order to use the merge queue. Sign up using this link.

An organization admin has enabled the Graphite Merge Queue in this repository.

Please do not merge from GitHub as this will restart CI on PRs being processed by the merge queue.

This stack of pull requests is managed by Graphite. Learn more about stacking.

[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #13454 will degrade performances by 3.55%

_{Comparing 08-30-feat_allocator_add_box_from_non_null_method (e3b6dc0) with main (edeebc6)¹}

Summary

⚡ 3 improvements
❌ 1 regressions
✅ 33 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
❌	mangler[RadixUIAdoptionSection.jsx]	11.7 µs	12.1 µs	-3.55%
⚡	mangler[binder.ts]	895 µs	793.8 µs	+12.75%
⚡	mangler[cal.com.tsx]	4.1 ms	2.9 ms	+38.51%
⚡	mangler[react.development.js]	292.8 µs	276.4 µs	+5.93%

Footnotes

1. No successful run was found on main (e3b6dc0) during the generation of this report, so edeebc6 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

[graphite-app]

Merge activity

• Aug 31, 4:58 AM UTC: Boshen added this pull request to the Graphite merge queue.
• Aug 31, 5:07 AM UTC: Merged by the Graphite merge queue.