Update LLVM to 22.1.0

[dianqk]

Fixes #151813.
Fixes #151946.

[rustbot]

r? @cuviper

rustbot has assigned @cuviper.
They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

Use r? to explicitly pick a reviewer

Why was this reviewer chosen?

The reviewer was selected based on:

• Owners of files modified in this PR: @cuviper

[rustbot]

⚠️ Warning ⚠️

• Some commits in this PR modify submodules.

  If this was not intentional, see I changed a submodule on accident in the rustc dev guide.

[cuviper]

@bors r+ rollup=never p=1

[rust-bors]

📌 Commit a8e76b9 has been approved by cuviper

It is now in the queue for this repository.

[JonathanBrouwer]

@bors p=6
Scheduling this before the next rollup

[JonathanBrouwer]

Seems to be stuck building LLVM, probably because the caches being reset because this is an LLVM upgrade.
Let's keep this running so we can get as much stuff into cache as possible

[JonathanBrouwer]

6 hours have passed
@bors cancel
Lets retry immediately

[rust-bors]

Auto build cancelled. Cancelled workflows:

• https://github.com/rust-lang/rust/actions/runs/22398948620

The next pull request likely to be tested is #153066.

[rust-bors]

☀️ Test successful - CI
Approved by: cuviper
Duration: 4h 1m 35s
Pushing 1ed4882 to main...

[github-actions]

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 3f98535 (parent) -> 1ed4882 (this PR)

Test differences

Show 1 test diff

Stage 2

• [run-make] tests/run-make/compressed-debuginfo-zstd: pass -> ignore (ignored if LLVM wasn't build with zstd for ELF section compression or LLVM is not the default codegen backend) (J0)

Job group index

• J0: x86_64-gnu-nopt

Test dashboard

Run

cargo run --manifest-path src/ci/citool/Cargo.toml -- \
    test-dashboard 1ed488274bec5bf5cfe6bf7a1cc089abcc4ebd68 --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

1. pr-check-1: 27m 5s -> 41m 29s (+53.2%)
2. pr-check-2: 37m 31s -> 54m 44s (+45.9%)
3. x86_64-rust-for-linux: 45m 48s -> 1h 3m (+37.8%)
4. dist-aarch64-linux: 1h 50m -> 2h 28m (+35.2%)
5. x86_64-gnu-stable: 2h 3m -> 2h 39m (+29.1%)
6. x86_64-gnu-tools: 56m 55s -> 1h 12m (+27.0%)
7. x86_64-gnu-gcc: 1h 2m -> 1h 16m (+23.3%)
8. x86_64-gnu-miri: 1h 14m -> 1h 31m (+23.1%)
9. arm-android: 1h 37m -> 1h 59m (+23.0%)
10. x86_64-gnu-nopt: 2h 25m -> 2h 58m (+22.7%)

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]

Finished benchmarking commit (1ed4882): comparison URL.

Overall result: ✅ improvements - no action needed

@rustbot label: -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
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-0.1%	[-0.1%, -0.1%]	1
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

Results (primary 6.2%, secondary -7.7%)

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

	mean	range	count
Regressions ❌ (primary)	6.2%	[6.2%, 6.2%]	1
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-7.7%	[-7.7%, -7.7%]	2
All ❌✅ (primary)	6.2%	[6.2%, 6.2%]	1

Cycles

Results (secondary 10.3%)

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)	10.3%	[2.7%, 17.8%]	2
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Binary size

Results (primary 0.0%, secondary 0.0%)

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

	mean	range	count
Regressions ❌ (primary)	0.0%	[0.0%, 0.0%]	1
Regressions ❌ (secondary)	0.0%	[0.0%, 0.0%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	0.0%	[0.0%, 0.0%]	1

Bootstrap: 480.701s -> 492.161s (2.38%)
Artifact size: 397.77 MiB -> 395.78 MiB (-0.50%)