[Perf] Linux/arm64: 2 Improvements on 5/26/2026 10:52:30 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [758abdf6906992c73adcd2c5ad8a1f5ecd0d70c7](https://github.com/dotnet/runtime/commit/758abdf6906992c73adcd2c5ad8a1f5ecd0d70c7)
Compare | [0ffb2389feb41141fdfc957ef1be4bca7e92ccb9](https://github.com/dotnet/runtime/commit/0ffb2389feb41141fdfc957ef1be4bca7e92ccb9)
Diff | [Diff](https://github.com/dotnet/runtime/compare/758abdf6906992c73adcd2c5ad8a1f5ecd0d70c7...0ffb2389feb41141fdfc957ef1be4bca7e92ccb9)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Collections.ContainsTrue<Int32>

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

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

| 34.09 μs | 27.77 μs | 0.81 | 0.43 | False | | |
|

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

| 34.23 μs | 27.98 μs | 0.82 | 0.49 | 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.ContainsTrue*'
```

### System.Collections.ContainsTrue<Int32>.Span(Size: 512)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.ContainsTrue<Int32>.Array(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)