Allow older LLVM versions to have missing components

[Amanieu]

This check was introduced by #77280 to ensure that all tests that are filtered by LLVM component are actually tested in CI. However this causes issues for new targets (e.g. #101069) where support is only available on the latest LLVM version.

This PR restricts the tests to only CI jobs that use the latest LLVM version.

[rustbot]

r? @pietroalbini

(rustbot has picked a reviewer for you, use r? to override)

[heiher]

Based on my testing, I can confirm that this patch is functioning properly. Would it be possible to merge it into the codebase in order to unblock #101069 ? Thank you very much for your help.

[Amanieu]

r? @petrochenkov

[petrochenkov]

@bors r+

[bors]

📌 Commit 7e8611b has been approved by petrochenkov

It is now in the queue for this repository.

[bors]

⌛ Testing commit 7e8611b with merge f6830a2...

[bors]

☀️ Test successful - checks-actions
Approved by: petrochenkov
Pushing f6830a2 to master...

[rust-timer]

Finished benchmarking commit (f6830a2): 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.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-1.7%	[-2.8%, -0.7%]	4
Improvements ✅ (secondary)	-6.0%	[-7.5%, -4.9%]	6
All ❌✅ (primary)	-1.7%	[-2.8%, -0.7%]	4

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)	2.0%	[2.0%, 2.0%]	1
Improvements ✅ (primary)	-1.8%	[-2.6%, -0.9%]	4
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-1.8%	[-2.6%, -0.9%]	4

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.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	4.0%	[4.0%, 4.0%]	2
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-3.4%	[-4.1%, -2.3%]	4
All ❌✅ (primary)	-	-	0