[do not merge] Undo all recent deriving changes.

[nnethercote]

As an experiment, to see the combined performance effect.

r? @ghost

[nnethercote]

@bors try @rust-timer queue

[rust-timer]

Awaiting bors try build completion.

@rustbot label: +S-waiting-on-perf

[bors]

⌛ Trying commit a1cdab838084e0822f5049f7eb623389148595b3 with merge 86ee43624628efb1c491ad9749a96a832de846e5...

[bors]

☀️ Try build successful - checks-actions
Build commit: 86ee43624628efb1c491ad9749a96a832de846e5 (86ee43624628efb1c491ad9749a96a832de846e5)

[rust-timer]

Queued 86ee43624628efb1c491ad9749a96a832de846e5 with parent 475aec1, future comparison URL.

[nnethercote]

@bors try @rust-timer queue

[rust-timer]

Awaiting bors try build completion.

@rustbot label: +S-waiting-on-perf

[bors]

⌛ Trying commit af8775b with merge 3e5b7142a8a24200ec4d00d7d0c0f176321d3fe4...

[rust-timer]

Finished benchmarking commit (86ee43624628efb1c491ad9749a96a832de846e5): comparison url.

Instruction count

• Primary benchmarks: mixed results
• Secondary benchmarks: mixed results

	mean1	max	count2
Regressions 😿 (primary)	1.7%	7.2%	124
Regressions 😿 (secondary)	6.6%	31.1%	52
Improvements 🎉 (primary)	-0.8%	-1.5%	3
Improvements 🎉 (secondary)	-1.4%	-2.3%	13
All 😿🎉 (primary)	1.6%	7.2%	127

Max RSS (memory usage)

Results

• Primary benchmarks: mixed results
• Secondary benchmarks: mixed results

	mean1	max	count2
Regressions 😿 (primary)	1.6%	3.8%	38
Regressions 😿 (secondary)	5.3%	9.9%	21
Improvements 🎉 (primary)	-4.4%	-6.0%	4
Improvements 🎉 (secondary)	-4.0%	-4.5%	2
All 😿🎉 (primary)	1.1%	-6.0%	42

Cycles

Results

• Primary benchmarks: 😿 relevant regressions found
• Secondary benchmarks: 😿 relevant regressions found

	mean1	max	count2
Regressions 😿 (primary)	3.4%	9.0%	52
Regressions 😿 (secondary)	9.8%	39.4%	40
Improvements 🎉 (primary)	N/A	N/A	0
Improvements 🎉 (secondary)	N/A	N/A	0
All 😿🎉 (primary)	3.4%	9.0%	52

If you disagree with this performance assessment, please file an issue in rust-lang/rustc-perf.

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.

Next Steps: If you can justify the regressions found in this try perf run, please indicate this with @rustbot label: +perf-regression-triaged along with sufficient written justification. If you cannot justify the regressions please fix the regressions and do another perf run. If the next run shows neutral or positive results, the label will be automatically removed.

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

Footnotes

1. the arithmetic mean of the percent change ↩ ↩² ↩³

2. number of relevant changes ↩ ↩² ↩³

[bors]

☀️ Try build successful - checks-actions
Build commit: 3e5b7142a8a24200ec4d00d7d0c0f176321d3fe4 (3e5b7142a8a24200ec4d00d7d0c0f176321d3fe4)

[Mark-Simulacrum]

Closing as results are available now.