[Perf] Windows/x86: 4 Regressions on 2/11/2026 6:41:41 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x86
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [848b99baf610b7a2985529fa63bedb394e4b86a1](https://github.com/dotnet/runtime/commit/848b99baf610b7a2985529fa63bedb394e4b86a1)
Compare | [56a1b4dc67607eb6f15388c4acfa01a61aca4d03](https://github.com/dotnet/runtime/commit/56a1b4dc67607eb6f15388c4acfa01a61aca4d03)
Diff | [Diff](https://github.com/dotnet/runtime/compare/848b99baf610b7a2985529fa63bedb394e4b86a1...56a1b4dc67607eb6f15388c4acfa01a61aca4d03)
Configs | CompilationMode:tiered, RunKind:micro

### Regressions in System.Reflection.Metadata.Perf_TypeName

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

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

| 517.67 ns | 579.29 ns | 1.12 | 0.05 | False | | |
|

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

| 1.56 μs | 1.73 μs | 1.11 | 0.04 | False | | |
|

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

| 1.46 μs | 1.58 μs | 1.08 | 0.03 | False | | |
|

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

| 1.60 μs | 1.75 μs | 1.09 | 0.02 | 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.Reflection.Metadata.Perf_TypeName*'
```

### System.Reflection.Metadata.Perf_TypeName.Parse_AssemblyQualifiedName(input: typeof(System.Int32&))

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Reflection.Metadata.Perf_TypeName.Parse_AssemblyQualifiedName(input: typeof(System.Collections.Generic.Dictionary<String, Boolean>))

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Reflection.Metadata.Perf_TypeName.ParseAndGetFullName(input: typeof(System.Collections.Generic.Dictionary<String, Boolean>))

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Reflection.Metadata.Perf_TypeName.Parse_AssemblyQualifiedName(input: typeof(System.Collections.Generic.Dictionary`2[]))

#### 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)