[Perf] Linux/arm64: 1 Improvement on 3/6/2026 8:19:49 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [b85f10962df5d097ca466ec0ed83664835671e42](https://github.com/dotnet/runtime/commit/b85f10962df5d097ca466ec0ed83664835671e42)
Compare | [5db8084c9d7bb9f50ce2457d56df626d051a5e40](https://github.com/dotnet/runtime/commit/5db8084c9d7bb9f50ce2457d56df626d051a5e40)
Diff | [Diff](https://github.com/dotnet/runtime/compare/b85f10962df5d097ca466ec0ed83664835671e42...5db8084c9d7bb9f50ce2457d56df626d051a5e40)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Collections.Perf_SingleCharFrozenDictionary

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

• [ToFrozenDictionary - Duration of single invocation]()
• [ADX - Test Multi Config Graph]()

| 67.51 μs | 60.80 μs | 0.90 | 0.35 | 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.Perf_SingleCharFrozenDictionary*'
```

### System.Collections.Perf_SingleCharFrozenDictionary.ToFrozenDictionary(Count: 1000)

#### 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)