Build rustc with assertions in `dist-alt` jobs by Kobzol · Pull Request #142235 · rust-lang/rust

Kobzol · 2025-06-09T09:12:35Z

Revival of #131077, to check CI times now that we don't do PGO/BOLT anymore on Linux -alt builds.

r? @ghost

try-job: dist-x86_64-msvc-alt
try-job: dist-x86_64-linux-alt

rustbot · 2025-06-09T09:12:40Z

Some changes occurred in src/tools/opt-dist

cc @Kobzol

Kobzol · 2025-06-09T09:12:41Z

@bors2 try

rust-bors · 2025-06-09T09:12:45Z

⌛ Trying commit fea114c with merge 719c0f0…

To cancel the try build, run the command @bors2 try cancel.

Rustc dist alt assertions Revival of #131077, to check CI times now that we don't do PGO/BOLT anymore on Linux `-alt` builds. r? `@ghost` try-job: dist-x86_64-msvc-alt try-job: dist-x86_64-linux-alt

rust-bors · 2025-06-09T12:30:55Z

☀️ Try build successful (CI)
Build commit: 719c0f0 (719c0f0e93c1f3606edfa5381222b9d9b8b0c087)

Kobzol · 2025-06-09T12:34:58Z

@bors2 try

rust-bors · 2025-06-09T12:35:01Z

⌛ Trying commit 6d4df2d with merge 6acdc26…

To cancel the try build, run the command @bors2 try cancel.

Build rustc with assertions in `dist-alt` jobs Revival of #131077, to check CI times now that we don't do PGO/BOLT anymore on Linux `-alt` builds. r? `@ghost` try-job: dist-x86_64-msvc-alt try-job: dist-x86_64-linux-alt

rust-bors · 2025-06-09T15:06:30Z

☀️ Try build successful (CI)
Build commit: 6acdc26 (6acdc261c9a2a67217d87dea62949057a09f503f)

Kobzol · 2025-06-09T15:08:27Z

2h 14 minutes with the 8-core runner, pretty nice. @marcoieni would you be fine to switch the dist-alt runner to 8 cores in order to get rustc assertions in CI builds?

src/tools/opt-dist/src/main.rs

marcoieni · 2025-06-09T15:32:20Z

2h 14 minutes with the 8-core runner, pretty nice. @marcoieni would you be fine to switch the dist-alt runner to 8 cores in order to get rustc assertions in CI builds?

yes it's fine 👍

llvm assertions are already enabled and debug assertions are also useful

Kobzol · 2025-06-10T10:18:30Z

@bors2 try

Build rustc with assertions in `dist-alt` jobs Revival of #131077, to check CI times now that we don't do PGO/BOLT anymore on Linux `-alt` builds. r? `@ghost` try-job: dist-x86_64-msvc-alt try-job: dist-x86_64-linux-alt

rust-bors · 2025-06-10T10:18:34Z

⌛ Trying commit 607a567 with merge 11c9e81…

To cancel the try build, run the command @bors2 try cancel.

rust-bors · 2025-06-10T12:48:42Z

☀️ Try build successful (CI)
Build commit: 11c9e81 (11c9e81093a637885ff88d565c318d0b9c074c63)

Kobzol · 2025-06-10T13:00:53Z

r? @marcoieni

marcoieni · 2025-06-10T13:03:09Z

@bors r+

bors · 2025-06-10T13:03:12Z

📌 Commit 607a567 has been approved by marcoieni

It is now in the queue for this repository.

…r=marcoieni Build rustc with assertions in `dist-alt` jobs Revival of rust-lang#131077, to check CI times now that we don't do PGO/BOLT anymore on Linux `-alt` builds. r? `@ghost` try-job: dist-x86_64-msvc-alt try-job: dist-x86_64-linux-alt

Rollup of 13 pull requests Successful merges: - #128425 (Make `missing_fragment_specifier` an unconditional error) - #141639 (Expose discriminant values in stable_mir) - #141967 (Configure bootstrap backport nominations through triagebot) - #142042 (Make E0621 missing lifetime suggestion verbose) - #142176 (tests: Split dont-shuffle-bswaps along opt-levels and arches) - #142235 (Build rustc with assertions in `dist-alt` jobs) - #142248 (Add supported asm types for LoongArch32) - #142272 (tests: Change ABIs in tests to more future-resilient ones) - #142282 (Only run `citool` tests on the `auto` branch) - #142285 (tests: Do not run afoul of asm.validity.non-exhaustive in input-stats) - #142297 (Implement `//@ needs-target-std` compiletest directive) - #142298 (Make loongarch-none target maintainers more easily pingable) - #142306 (Dont unwrap and re-wrap typing envs) Failed merges: - #141942 (Implement representation options to smir) r? `@ghost` `@rustbot` modify labels: rollup

workingjubilee · 2025-06-12T05:10:47Z

sorry, I don't have a good reason, it just has a vibe, and I think everyone else is assuming it does too.

@bors rollup=iffy

bors · 2025-06-14T01:59:41Z

⌛ Testing commit 607a567 with merge 64c81fd...

bors · 2025-06-14T04:57:15Z

☀️ Test successful - checks-actions
Approved by: marcoieni
Pushing 64c81fd to master...

github-actions · 2025-06-14T05:00:27Z

What is this?

This is an experimental post-merge analysis report that shows differences in test outcomes between the merged PR and its parent PR.

Comparing d087f11 (parent) -> 64c81fd (this PR)

Test differences

No test diffs found

Test dashboard

Run

cargo run --manifest-path src/ci/citool/Cargo.toml -- \
    test-dashboard 64c81fd10509924ca4da5d93d6052a65b75418a5 --output-dir test-dashboard

And then open test-dashboard/index.html in your browser to see an overview of all executed tests.

Job duration changes

x86_64-apple-2: 3428.9s -> 5893.1s (71.9%)
dist-x86_64-apple: 7706.6s -> 9773.4s (26.8%)
dist-x86_64-linux-alt: 9526.9s -> 7293.1s (-23.4%)
aarch64-apple: 4330.2s -> 5259.7s (21.5%)
dist-x86_64-msvc-alt: 7142.8s -> 8375.8s (17.3%)
aarch64-gnu-debug: 3575.9s -> 4064.3s (13.7%)
dist-arm-linux-gnueabi: 4555.5s -> 5160.7s (13.3%)
x86_64-apple-1: 6185.4s -> 6946.8s (12.3%)
i686-gnu-2: 5391.9s -> 6044.3s (12.1%)
mingw-check-1: 1677.9s -> 1860.1s (10.9%)

How to interpret the job duration changes?

Job durations can vary a lot, based on the actual runner instance
that executed the job, system noise, invalidated caches, etc. The table above is provided
mostly for t-infra members, for simpler debugging of potential CI slow-downs.

rust-timer · 2025-06-14T06:24:31Z

Finished benchmarking commit (64c81fd): 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)

Results (primary -2.6%, secondary -5.7%)

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)	-	-	0
Improvements ✅ (primary)	-2.6%	[-3.6%, -1.6%]	2
Improvements ✅ (secondary)	-5.7%	[-8.2%, -3.3%]	2
All ❌✅ (primary)	-2.6%	[-3.6%, -1.6%]	2

Cycles

Results (secondary 1.7%)

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)	1.7%	[1.7%, 1.7%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Binary size

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

Bootstrap: 757.156s -> 757.551s (0.05%)
Artifact size: 372.29 MiB -> 372.30 MiB (0.00%)

rustbot added A-testsuite Area: The testsuite used to check the correctness of rustc S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-infra Relevant to the infrastructure team, which will review and decide on the PR/issue. labels Jun 9, 2025

Kobzol changed the title ~~Rustc dist alt assertions~~ Build rustc with assertions in dist-alt jobs Jun 9, 2025

marcoieni reviewed Jun 9, 2025

View reviewed changes

src/tools/opt-dist/src/main.rs Outdated Show resolved Hide resolved

lqd and others added 2 commits June 10, 2025 12:17

enable rustc debug assertions on -alt builds

8f069e9

llvm assertions are already enabled and debug assertions are also useful

Use a faster runner for the x64 dist-alt job

607a567

Kobzol force-pushed the rustc-dist-alt-assertions branch from 6d4df2d to 607a567 Compare June 10, 2025 10:17

rustbot assigned marcoieni Jun 10, 2025

bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jun 10, 2025

fmease mentioned this pull request Jun 10, 2025

Rollup of 13 pull requests #142313

Closed

bors added the merged-by-bors This PR was explicitly merged by bors. label Jun 14, 2025

bors merged commit 64c81fd into rust-lang:master Jun 14, 2025
11 checks passed

rustbot added this to the 1.89.0 milestone Jun 14, 2025

Kobzol deleted the rustc-dist-alt-assertions branch June 14, 2025 06:18

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rust-timer commented Jun 14, 2025

Overall result: no relevant changes - no action needed

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