[Perf] Linux/x64: 1 Improvement on 5/26/2026 6:56:03 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [822530fb322cdf922c59e2a381994e885f24f051](https://github.com/dotnet/runtime/commit/822530fb322cdf922c59e2a381994e885f24f051)
Compare | [758abdf6906992c73adcd2c5ad8a1f5ecd0d70c7](https://github.com/dotnet/runtime/commit/758abdf6906992c73adcd2c5ad8a1f5ecd0d70c7)
Diff | [Diff](https://github.com/dotnet/runtime/compare/822530fb322cdf922c59e2a381994e885f24f051...758abdf6906992c73adcd2c5ad8a1f5ecd0d70c7)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Improvements in System.Tests.Perf_String

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

• [Substring_Int - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config 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.Tests.Perf_String*'
```

### System.Tests.Perf_String.Substring_Int(s: "dzsdzsDDZSDZSDZSddsz", i: 0)

#### 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)