Detect bindings assigned blocks without tail expressions

[estebank]

Fix #44173.

[rustbot]

r? @cjgillot

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[cjgillot]

@bors r+

[bors]

📌 Commit 031e085 has been approved by cjgillot

It is now in the queue for this repository.

[bors]

⌛ Testing commit 031e085 with merge a2112fc...

[bors]

☀️ Test successful - checks-actions
Approved by: cjgillot
Pushing a2112fc to master...

[rust-timer]

Finished benchmarking commit (a2112fc): 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)	-	-	0
Improvements ✅ (secondary)	-1.3%	[-1.3%, -1.3%]	1
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.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	-	-	0
Improvements ✅ (primary)	-2.2%	[-2.2%, -2.2%]	1
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-2.2%	[-2.2%, -2.2%]	1

Cycles

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