add codegen test for the move before passing to nocapture, by shared-ref arg

[khei4]

This PR adds codegen test for #107436 (comment) (It seems like this works from llvm-16?)

Fixes #107436

[rustbot]

r? @Mark-Simulacrum

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[khei4]

r? @nikic

[nikic]

How did you determine that this works with LLVM 16 already?

[khei4]

How did you determine that this works with LLVM 16 already?

@nikic Thank you! I'm sorry I misunderstood! llvm-16 can't work.
https://llvm.godbolt.org/z/4Wo3Yf3rq

[nikic]

@bors r+

[bors]

📌 Commit d88c80f has been approved by nikic

It is now in the queue for this repository.

[bors]

⌛ Testing commit d88c80f with merge 9f48a85...

[bors]

☀️ Test successful - checks-actions
Approved by: nikic
Pushing 9f48a85 to master...

[rust-timer]

Finished benchmarking commit (9f48a85): comparison URL.

Overall result: no relevant changes - no action needed

@rustbot label: -perf-regression

Instruction count

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

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)	-2.3%	[-2.3%, -2.3%]	1
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-2.3%	[-2.3%, -2.3%]	1

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: 629.54s -> 630.477s (0.15%)
Artifact size: 316.21 MiB -> 316.26 MiB (0.02%)