[Perf] Linux/x64: 3 Regressions on 4/1/2026 5:31:36 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [6b19ef50c16f402d6c31f514a4fc98105dc984b0](https://github.com/dotnet/runtime/commit/6b19ef50c16f402d6c31f514a4fc98105dc984b0)
Compare | [98f11ec241e1ce957b1bcba1e7b263fb3f6dd9b4](https://github.com/dotnet/runtime/commit/98f11ec241e1ce957b1bcba1e7b263fb3f6dd9b4)
Diff | [Diff](https://github.com/dotnet/runtime/compare/6b19ef50c16f402d6c31f514a4fc98105dc984b0...98f11ec241e1ce957b1bcba1e7b263fb3f6dd9b4)
Configs | CompilationMode:wasm, RunKind:micro, RuntimeType:coreclr

### Regressions in Interop.StructureToPtr

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

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

| 2.24 μs | 4.22 μs | 1.88 | 0.20 | False | | |
|

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

| 5.66 μs | 9.29 μs | 1.64 | 0.29 | False | | |
|

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

| 2.62 μs | 4.09 μs | 1.56 | 0.27 | 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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'Interop.StructureToPtr*'
```

### Interop.StructureToPtr.MarshalStructureToPtr

#### ETL Files

#### Histogram

#### JIT Disasms

### Interop.StructureToPtr.MarshalDestroyStructure

#### ETL Files

#### Histogram

#### JIT Disasms

### Interop.StructureToPtr.MarshalPtrToStructure

#### 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)