Update LLVM submodule

[nikic]

This updates to the current 15.x branch plus one cherry-pick.

Fixes #100834.
Fixes #101121.

[rust-highfive]

r? @cuviper

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[rust-highfive]

⚠️ Warning ⚠️

• These commits modify submodules.

[cuviper]

plus one cherry-pick.

I see that's already proposed for release/15.x too, thanks!

@bors r+ rollup=never

[bors]

📌 Commit 8bed0f2 has been approved by cuviper

It is now in the queue for this repository.

[bors]

⌛ Testing commit 8bed0f2 with merge 1e7b6fe23bcbe17192c7fd90cbd5ac9006273ead...

[bors]

💔 Test failed - checks-actions

[rust-log-analyzer]

A job failed! Check out the build log: (web) (plain)

Click to see the possible cause of the failure (guessed by this bot)

[cuviper]

Logs are missing in dist-x86_64-msvc?

@bors retry

[bors]

⌛ Testing commit 8bed0f2 with merge 197b9c9d9766832214cf54cfc6a57a319471db9f...

[bors]

💥 Test timed out

[matthiaskrgr]

@bors retry

[bors]

⌛ Testing commit 8bed0f2 with merge c2d140b...

[bors]

☀️ Test successful - checks-actions
Approved by: cuviper
Pushing c2d140b to master...

[rust-timer]

Finished benchmarking commit (c2d140b): comparison URL.

Overall result: ✅ improvements - 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.

	mean1	range	count2
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-0.8%	[-1.7%, -0.6%]	7
All ❌✅ (primary)	-	-	0

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.

	mean1	range	count2
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	5.9%	[2.5%, 11.3%]	3
Improvements ✅ (primary)	-6.0%	[-6.0%, -6.0%]	1
Improvements ✅ (secondary)	-7.8%	[-7.8%, -7.8%]	1
All ❌✅ (primary)	-6.0%	[-6.0%, -6.0%]	1

Cycles

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.

	mean1	range	count2
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-2.5%	[-2.9%, -2.1%]	2
Improvements ✅ (secondary)	-2.2%	[-2.4%, -2.1%]	3
All ❌✅ (primary)	-2.5%	[-2.9%, -2.1%]	2

Footnotes

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

2. number of relevant changes ↩ ↩² ↩³