Update LLVM submodule

[ForsakenHarmony]

LLVM version 18.1.1 + additional fixes.

Fixes Amanieu/corosensei#23.
Fixes #122252.
Fixes #121996.
Fixes #121960.

[rustbot]

Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @cuviper (or someone else) some time within the next two weeks.

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[rustbot]

⚠️ Warning ⚠️

• These commits modify submodules.

[nikic]

@bors r+ rollup=never

[bors]

📌 Commit f858f87 has been approved by nikic

It is now in the queue for this repository.

[bors]

⌛ Testing commit f858f87 with merge 7aa1de7...

[bors]

☀️ Test successful - checks-actions
Approved by: nikic
Pushing 7aa1de7 to master...

[rust-timer]

Finished benchmarking commit (7aa1de7): comparison URL.

Overall result: ❌ regressions - no action needed

@rustbot label: -perf-regression

Instruction count

This is a highly reliable metric that was used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	0.6%	[0.6%, 0.6%]	1
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	0.6%	[0.6%, 0.6%]	1

Max RSS (memory usage)

Results

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)	-2.4%	[-2.4%, -2.4%]	1
All ❌✅ (primary)	-	-	0

Cycles

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

Binary size

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

Bootstrap: 670.527s -> 671.724s (0.18%)
Artifact size: 311.59 MiB -> 311.58 MiB (-0.00%)