[Perf] Windows/x86: 2 Regressions on 3/2/2026 4:47:53 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x86
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [2afb4c51d26521dd5753e2b817ea66e36c16de87](https://github.com/dotnet/runtime/commit/2afb4c51d26521dd5753e2b817ea66e36c16de87)
Compare | [371f3c356098295803263c75b74e5ee1d10cae01](https://github.com/dotnet/runtime/commit/371f3c356098295803263c75b74e5ee1d10cae01)
Diff | [Diff](https://github.com/dotnet/runtime/compare/2afb4c51d26521dd5753e2b817ea66e36c16de87...371f3c356098295803263c75b74e5ee1d10cae01)
Configs | CompilationMode:tiered, RunKind:micro

### Regressions in System.Xml.Linq.Perf_XElement

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

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

| 15.60 ns | 16.96 ns | 1.09 | 0.49 | False | | |
|

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

| 14.32 ns | 15.84 ns | 1.11 | 0.17 | False | | |

[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.Xml.Linq.Perf_XElement*'
```

### System.Xml.Linq.Perf_XElement.GetElement

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Xml.Linq.Perf_XElement.CreateElement

#### 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)