[xmakro]

Follow up of #164065.

Just testing perf for now. This PR has some cleanup because of the new invariant that prev_index == new_index in the depgraph which we want to introduce in #164065. This also allows us to stop collecting edges during the green marking walk, which should improve perf.

[panstromek]

@bors try @rust-timer queue

[rust-bors]

☀️ Try build successful (CI)
Build commit: b81e23e (b81e23e0985657f529ea25e039786448eaf4384d)
Base parent: 6f5da40 (6f5da406b56c2db6607202b63daee73aa8c61297)

[rust-timer]

Finished benchmarking commit (b81e23e): comparison URL.

Overall result: ❌✅ regressions and improvements - please read:

Benchmarking means the PR may be perf-sensitive. It's automatically marked not fit for rolling up. Overriding is possible but disadvised: it risks changing compiler perf.

Next, please: If you can, justify the regressions found in this try perf run in writing along with @rustbot label: +perf-regression-triaged. If not, fix the regressions and do another perf run. Neutral or positive results will clear the label automatically.

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

Instruction count

Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.

	mean	range	count
Regressions ❌ (primary)	0.2%	[0.2%, 0.2%]	3
Regressions ❌ (secondary)	0.3%	[0.2%, 0.4%]	9
Improvements ✅ (primary)	-2.8%	[-8.3%, -0.1%]	136
Improvements ✅ (secondary)	-1.7%	[-7.2%, -0.1%]	126
All ❌✅ (primary)	-2.7%	[-8.3%, 0.2%]	139

Max RSS (memory usage)

Results (primary -0.9%, secondary 0.8%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	3.1%	[2.8%, 3.5%]	3
Regressions ❌ (secondary)	5.5%	[2.9%, 11.3%]	8
Improvements ✅ (primary)	-1.2%	[-1.9%, -0.5%]	33
Improvements ✅ (secondary)	-2.3%	[-3.7%, -0.6%]	12
All ❌✅ (primary)	-0.9%	[-1.9%, 3.5%]	36

Cycles

Results (primary -3.1%, secondary -2.2%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	5.6%	[2.6%, 8.7%]	2
Improvements ✅ (primary)	-3.1%	[-5.5%, -1.8%]	38
Improvements ✅ (secondary)	-3.4%	[-6.3%, -2.1%]	13
All ❌✅ (primary)	-3.1%	[-5.5%, -1.8%]	38

Binary size

This perf run didn't have relevant results for this metric.

Bootstrap: 488.596s -> 489.56s (0.20%)
Artifact size: 407.26 MiB -> 406.67 MiB (-0.15%)

[rust-bors]

☔ The latest upstream changes (presumably #165563) made this pull request unmergeable. Please resolve the merge conflicts by rebasing.