Fix incremental perf regression unsafety checking

[oli-obk]

Perf regression introduced in #96294

We will simply avoid emitting the name of the unsafe function in MIR unsafeck, since we're moving to THIR unsafeck anyway.

[rust-highfive]

r? @wesleywiser

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[oli-obk]

@bors try @rust-timer queue

[rust-timer]

Awaiting bors try build completion.

@rustbot label: +S-waiting-on-perf

[bors]

⌛ Trying commit 4882b70768c6cc0ce49490d707cd159b2b5fc304 with merge 83858ee454a76d4e8b12d9299824b9054609b99d...

[bors]

☀️ Try build successful - checks-actions
Build commit: 83858ee454a76d4e8b12d9299824b9054609b99d (83858ee454a76d4e8b12d9299824b9054609b99d)

[rust-timer]

Queued 83858ee454a76d4e8b12d9299824b9054609b99d with parent d6a57d3, future comparison URL.

[rust-timer]

Finished benchmarking commit (83858ee454a76d4e8b12d9299824b9054609b99d): comparison url.

Summary:

• Primary benchmarks: 🎉 relevant improvements found
• Secondary benchmarks: no relevant changes found

	Regressions 😿 (primary)	Regressions 😿 (secondary)	Improvements 🎉 (primary)	Improvements 🎉 (secondary)	All 😿 🎉 (primary)
count1	0	0	44	0	44
mean2	N/A	N/A	-1.3%	N/A	-1.3%
max	N/A	N/A	-2.9%	N/A	-2.9%

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

Benchmarking this pull request likely means that it is perf-sensitive, so we're automatically marking it as not fit for rolling up. While you can manually mark this PR as fit for rollup, we strongly recommend not doing so since this PR may lead to changes in compiler perf.

@bors rollup=never
@rustbot label: +S-waiting-on-review -S-waiting-on-perf -perf-regression

Footnotes

1. number of relevant changes ↩

2. the arithmetic mean of the percent change ↩

[compiler-errors]

We will simply avoid emitting the name of the unsafe function in MIR unsafeck, since we're moving to THIR unsafeck anyway.

I think this change is reasonable, since the highlighted span elucidates the call anyways.

[compiler-errors]

r? @compiler-errors
@bors r+

[bors]

📌 Commit 3568bdc has been approved by compiler-errors

[bors]

⌛ Testing commit 3568bdc with merge a719718...

[bors]

☀️ Test successful - checks-actions
Approved by: compiler-errors
Pushing a719718 to master...

[rust-timer]

Finished benchmarking commit (a719718): comparison url.

Summary:

• Primary benchmarks: 🎉 relevant improvements found
• Secondary benchmarks: no relevant changes found

	Regressions 😿 (primary)	Regressions 😿 (secondary)	Improvements 🎉 (primary)	Improvements 🎉 (secondary)	All 😿 🎉 (primary)
count1	0	0	48	0	48
mean2	N/A	N/A	-1.2%	N/A	-1.2%
max	N/A	N/A	-2.8%	N/A	-2.8%

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

@rustbot label: -perf-regression

Footnotes

1. number of relevant changes ↩

2. the arithmetic mean of the percent change ↩