[Perf] Linux/x64: 2 Improvements on 5/12/2026 11:35:36 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [6820c801e8b84f3fc9f96ecb6e0838b829345951](https://github.com/dotnet/runtime/commit/6820c801e8b84f3fc9f96ecb6e0838b829345951)
Compare | [52090b9f07a14ec5db3a19b379548f469fefcc27](https://github.com/dotnet/runtime/commit/52090b9f07a14ec5db3a19b379548f469fefcc27)
Diff | [Diff](https://github.com/dotnet/runtime/compare/6820c801e8b84f3fc9f96ecb6e0838b829345951...52090b9f07a14ec5db3a19b379548f469fefcc27)
Configs | CompilationMode:wasm, RunKind:micro, RuntimeType:coreclr

### Improvements in System.Collections.Perf_Frozen<ReferenceType>

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

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

| 3.10 ms | 1.71 ms | 0.55 | 0.40 | False | | |
|

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

| 31.76 μs | 19.20 μs | 0.60 | 0.38 | False | | |

![graph]()
![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_Frozen*'
```

### System.Collections.Perf_Frozen<ReferenceType>.Contains_True(Count: 512)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Perf_Frozen<ReferenceType>.TryGetValue_True(Count: 4)

#### 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)