Port symbol mangler attrs

[Bryntet]

Tracking issue: #131229

@JonathanBrouwer could you run perf on this?

[JonathanBrouwer]

@bors try @rust-timer queue

[rust-bors]

☀️ Try build successful (CI)
Build commit: 3162956 (3162956ac6c60e4ef7d9ae98b1319ef2d1e08ec6, parent: 9bc8b40bc314b74e1d5e5ab21a0df39c55a34806)

[rust-timer]

Finished benchmarking commit (3162956): comparison URL.

Overall result: ❌✅ regressions and improvements - no action needed

Benchmarking this pull request means it may be perf-sensitive – we'll automatically label it not fit for rolling up. You can override this, but we strongly advise not to, due to possible changes in compiler perf.

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

Instruction count

Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	0.3%	[0.3%, 0.3%]	2
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-0.2%	[-0.4%, -0.0%]	3
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

Results (secondary -1.7%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	0.6%	[0.6%, 0.6%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-2.8%	[-3.5%, -2.0%]	2
All ❌✅ (primary)	-	-	0

Cycles

Results (secondary -3.7%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	2.7%	[2.7%, 2.7%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-10.2%	[-10.2%, -10.2%]	1
All ❌✅ (primary)	-	-	0

Binary size

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

Bootstrap: 473.122s -> 472.718s (-0.09%)
Artifact size: 391.33 MiB -> 391.30 MiB (-0.01%)

[rust-bors]

☔ The latest upstream changes (presumably #150957) made this pull request unmergeable. Please resolve the merge conflicts.