[Perf] Linux/arm64: 1 Regression on 2/26/2026 7:47:57 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [133c7bde3fb7dd914f423ffb3e408cc61787e0bb](https://github.com/dotnet/runtime/commit/133c7bde3fb7dd914f423ffb3e408cc61787e0bb)
Compare | [de761a5e0a7bd363b5eb119260acfc8da4e9608c](https://github.com/dotnet/runtime/commit/de761a5e0a7bd363b5eb119260acfc8da4e9608c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/133c7bde3fb7dd914f423ffb3e408cc61787e0bb...de761a5e0a7bd363b5eb119260acfc8da4e9608c)
Configs | CompilationMode:tiered, RunKind:micro

### Regressions in System.Collections.CtorFromCollectionNonGeneric<String>

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|

• [SortedList - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config Graph]()

| 281.14 μs | 347.61 μs | 1.24 | 0.01 | False | | |

![graph]()
[Test Report]()

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.CtorFromCollectionNonGeneric*'
```

### System.Collections.CtorFromCollectionNonGeneric<String>.SortedList(Size: 512)

#### ETL Files

#### Histogram

#### JIT Disasms

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)