llvm-wrapper: adapt for LLVM API change

[krasimirgg]

No functional changes intended.

LLVM commit llvm/llvm-project@633f566 removed createWriteThinLTOBitcodePass.
This adapts PassWrapper similarly to the example mentioned upstream: llvm/llvm-project@853b57f.

Detected via our experimental rust + llvm @ head bot: https://buildkite.com/llvm-project/rust-llvm-integrate-prototype/builds/12768#0182a6be-ed6e-4dc6-a230-7a46f9d3a2c2/205-537

[rust-highfive]

r? @cuviper

(rust-highfive has picked a reviewer for you, use r? to override)

[krasimirgg]

r? @nikic

[krasimirgg]

r? @cuviper

[cuviper]

Thanks! Blocking rollups so we can see the perf effect, if any.

@bors r+ rollup=never

[bors]

📌 Commit 7cba1f9 has been approved by cuviper

It is now in the queue for this repository.

[bors]

⌛ Testing commit 7cba1f9 with merge 39a9b88...

[bors]

☀️ Test successful - checks-actions
Approved by: cuviper
Pushing 39a9b88 to master...

[rust-timer]

Finished benchmarking commit (39a9b88): comparison url.

Instruction count

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

Max RSS (memory usage)

Results

• Primary benchmarks: no relevant changes found
• Secondary benchmarks: mixed results

	mean1	max	count2
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	3.3%	3.3%	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-2.9%	-2.9%	1
All ❌✅ (primary)	-	-	0

Cycles

Results

• Primary benchmarks: ✅ relevant improvement found
• Secondary benchmarks: no relevant changes found

	mean1	max	count2
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-3.4%	-3.4%	1
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-3.4%	-3.4%	1

If you disagree with this performance assessment, please file an issue in rust-lang/rustc-perf.

@rustbot label: -perf-regression

Footnotes

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

2. number of relevant changes ↩ ↩²