[perf] Try revert of #102472

[lqd]

Since we don't have a perf run or unrolled builds for PR #102472, let's try perf on a revert and see if it's the regression source in the #109692 rollup as suspected here #109692 (comment).

r? @ghost

[lqd]

@bors try @rust-timer queue

[bors]

⌛ Trying commit 0026d96 with merge 8d0b21023d7793848a84ec3f620c8969711e64b1...

[bors]

☀️ Try build successful - checks-actions
Build commit: 8d0b21023d7793848a84ec3f620c8969711e64b1 (8d0b21023d7793848a84ec3f620c8969711e64b1)

[bors]

☀️ Try build successful - checks-actions
Build commit: 8d0b21023d7793848a84ec3f620c8969711e64b1 (8d0b21023d7793848a84ec3f620c8969711e64b1)

[rust-timer]

Finished benchmarking commit (8d0b21023d7793848a84ec3f620c8969711e64b1): comparison URL.

Overall result: ✅ improvements - no action needed

Benchmarking this pull request likely means that it is perf-sensitive, so we're automatically marking it as not fit for rolling up. While you can manually mark this PR as fit for rollup, we strongly recommend not doing so since this PR may lead to changes in compiler perf.

@bors rollup=never
@rustbot label: -S-waiting-on-perf -perf-regression

Instruction count

This is a highly reliable metric that was used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	0.3%	[0.3%, 0.3%]	1
Improvements ✅ (primary)	-2.0%	[-8.7%, -0.2%]	10
Improvements ✅ (secondary)	-3.9%	[-10.1%, -0.6%]	8
All ❌✅ (primary)	-2.0%	[-8.7%, -0.2%]	10

Max RSS (memory usage)

Results

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)	2.7%	[2.4%, 3.0%]	2
Improvements ✅ (primary)	-2.0%	[-2.0%, -2.0%]	1
Improvements ✅ (secondary)	-2.4%	[-2.4%, -2.4%]	1
All ❌✅ (primary)	-2.0%	[-2.0%, -2.0%]	1

Cycles

Results

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)	-5.0%	[-7.5%, -2.5%]	2
Improvements ✅ (secondary)	-4.3%	[-8.5%, -2.2%]	6
All ❌✅ (primary)	-5.0%	[-7.5%, -2.5%]	2