[Perf] Windows/x86: 1 Regression on 4/27/2026 2:35:20 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x86
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [0bda60e7e77cc8727586674deee087cf4b3df766](https://github.com/dotnet/runtime/commit/0bda60e7e77cc8727586674deee087cf4b3df766)
Compare | [5391e9ec4fb4ab1bcebe4dbfc33bf4b8fdf01981](https://github.com/dotnet/runtime/commit/5391e9ec4fb4ab1bcebe4dbfc33bf4b8fdf01981)
Diff | [Diff](https://github.com/dotnet/runtime/compare/0bda60e7e77cc8727586674deee087cf4b3df766...5391e9ec4fb4ab1bcebe4dbfc33bf4b8fdf01981)
Configs | CompilationMode:tiered, RunKind:micro

### Regressions in System.Text.Json.Serialization.Tests.WriteJson<HashSet<String>>

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

• [SerializeToWriter - 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Serialization.Tests.WriteJson>*'
```

### System.Text.Json.Serialization.Tests.WriteJson<HashSet<String>>.SerializeToWriter(Mode: SourceGen)

#### 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)