stabilize const_alloc_layout

[RalfJung]

libs-api FCP passed in #67521

Fixes #67521

[rustbot]

r? @cuviper

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[jhpratt]

@bors r+

[bors]

📌 Commit 88b88f3 has been approved by jhpratt

It is now in the queue for this repository.

[bors]

⌛ Testing commit 88b88f3 with merge a25032c...

[bors]

☀️ Test successful - checks-actions
Approved by: jhpratt
Pushing a25032c to master...

[rust-timer]

Finished benchmarking commit (a25032c): comparison URL.

Overall result: no relevant changes - no action needed

@rustbot label: -perf-regression

Instruction count

This benchmark run did not return any relevant results for this metric.

Max RSS (memory usage)

This benchmark run did not return any relevant results for this metric.

Cycles

Results (primary -1.9%, secondary -3.2%)

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-1.9%	[-2.1%, -1.4%]	4
Improvements ✅ (secondary)	-3.2%	[-4.6%, -2.0%]	8
All ❌✅ (primary)	-1.9%	[-2.1%, -1.4%]	4

Binary size

This benchmark run did not return any relevant results for this metric.

Bootstrap: 764.604s -> 763.112s (-0.20%)
Artifact size: 330.49 MiB -> 330.55 MiB (0.02%)