[Perf] Linux/x64: 1 Improvement on 7/22/2026 8:34:21 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [5ffdd753b0146f0ec95786b2af0ab7da0b37d061](https://github.com/dotnet/runtime/commit/5ffdd753b0146f0ec95786b2af0ab7da0b37d061)
Compare | [57f3e7eaec55cf263674f65eabb8965b612dc997](https://github.com/dotnet/runtime/commit/57f3e7eaec55cf263674f65eabb8965b612dc997)
Diff | [Diff](https://github.com/dotnet/runtime/compare/5ffdd753b0146f0ec95786b2af0ab7da0b37d061...57f3e7eaec55cf263674f65eabb8965b612dc997)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Improvements in System.Globalization.Tests.StringSearch

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

• [IsSuffix_DifferentLastChar - 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.Globalization.Tests.StringSearch*'
```

### System.Globalization.Tests.StringSearch.IsSuffix_DifferentLastChar(Options: (, IgnoreCase, True))

#### 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)

Start with the benchmark source at performance/src/benchmarks/micro/libraries/System.Globalization/StringSearch.cs lines 98-100 and reproduce it with the provided benchmarks_ci.py command. Review the linked Test Report and profiling workflow; the issue does not specify a code change or acceptance criterion, so what constitutes done is not defined.

Written by the indexing model from the issue text.