improve type mutation for certain structures

[onur-ozkan]

self-explanatory

[rustbot]

r? @Kobzol

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[jieyouxu]

r? jieyouxu

[jieyouxu]

Thanks!

[jieyouxu]

@bors r+ rollup

[bors]

📌 Commit 6b2fd4f has been approved by jieyouxu

It is now in the queue for this repository.

[bors]

⌛ Testing commit 6b2fd4f with merge d53b0ff...

[bors]

☀️ Test successful - checks-actions
Approved by: jieyouxu
Pushing d53b0ff to master...

[rust-timer]

Finished benchmarking commit (d53b0ff): comparison URL.

Overall result: ❌ regressions - no action needed

@rustbot label: -perf-regression

Instruction count

This is the most reliable metric that we have; it was used to determine the overall result at the top of this comment. However, even this metric can sometimes exhibit noise.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	0.4%	[0.4%, 0.4%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

Results (primary -2.7%, secondary 2.8%)

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)	2.8%	[2.1%, 3.5%]	2
Improvements ✅ (primary)	-2.7%	[-3.1%, -2.1%]	3
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-2.7%	[-3.1%, -2.1%]	3

Cycles

Results (secondary -5.2%)

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)	-	-	0
Improvements ✅ (secondary)	-5.2%	[-5.5%, -5.0%]	3
All ❌✅ (primary)	-	-	0

Binary size

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

Bootstrap: 761.878s -> 762.9s (0.13%)
Artifact size: 330.65 MiB -> 330.67 MiB (0.01%)