[Perf] Windows/x64: 2 Regressions on 3/19/2026 9:11:05 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [3bb52afde2bdfe203e6b2b4debaa8905d15e7c22](https://github.com/dotnet/sdk/commit/3bb52afde2bdfe203e6b2b4debaa8905d15e7c22)
Compare | [a6a5ddf95840f305b42bd43a8d30b062f9b67d1f](https://github.com/dotnet/sdk/commit/a6a5ddf95840f305b42bd43a8d30b062f9b67d1f)
Diff | [Diff](https://github.com/dotnet/sdk/compare/3bb52afde2bdfe203e6b2b4debaa8905d15e7c22...a6a5ddf95840f305b42bd43a8d30b062f9b67d1f)
Configs | CompilationMode:tiered, RunKind:bepuphysics

### Regressions in DemoBenchmarks.TwoBodyConstraintBenchmarks

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

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

| 116.08 μs | 135.84 μs | 1.17 | 0.00 | True | | |
|

• [Contact4Nonconvex - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config Graph]()

| 473.43 μs | 521.54 μs | 1.10 | 0.00 | True | | |

![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 'DemoBenchmarks.TwoBodyConstraintBenchmarks*'
```

### DemoBenchmarks.TwoBodyConstraintBenchmarks.SwivelHinge

#### ETL Files

#### Histogram

#### JIT Disasms

### DemoBenchmarks.TwoBodyConstraintBenchmarks.Contact4Nonconvex

#### 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)