[Perf] Linux/x64: 2 Regressions on 4/25/2026 1:02:48 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [51cfc7a608e60e2e1d5b8e65c9f0ffe8a322fe1f](https://github.com/dotnet/runtime/commit/51cfc7a608e60e2e1d5b8e65c9f0ffe8a322fe1f)
Compare | [932247a4703f30a573f3efbe680a5bc649b7b4ef](https://github.com/dotnet/runtime/commit/932247a4703f30a573f3efbe680a5bc649b7b4ef)
Diff | [Diff](https://github.com/dotnet/runtime/compare/51cfc7a608e60e2e1d5b8e65c9f0ffe8a322fe1f...932247a4703f30a573f3efbe680a5bc649b7b4ef)
Configs | CompilationMode:wasm, RunKind:micro, RuntimeType:coreclr

### Regressions in PerfLabTests.CastingPerf2.CastingPerf

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

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

| 22.37 ms | 26.13 ms | 1.17 | 0.34 | False | | |
|

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

| 67.83 ms | 73.50 ms | 1.08 | 0.48 | False | | |

![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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'PerfLabTests.CastingPerf2.CastingPerf*'
```

### PerfLabTests.CastingPerf2.CastingPerf.IntObj

#### ETL Files

#### Histogram

#### JIT Disasms

### PerfLabTests.CastingPerf2.CastingPerf.FooObjIsNull

#### 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)