[Perf] Linux/x64: 2 Regressions on 4/23/2026 10:26:31 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [2aba648afca9799b64722639f6d280311988bab2](https://github.com/dotnet/runtime/commit/2aba648afca9799b64722639f6d280311988bab2)
Compare | [8e222c4ee14225b43342720d71a4b44610df5a31](https://github.com/dotnet/runtime/commit/8e222c4ee14225b43342720d71a4b44610df5a31)
Diff | [Diff](https://github.com/dotnet/runtime/compare/2aba648afca9799b64722639f6d280311988bab2...8e222c4ee14225b43342720d71a4b44610df5a31)
Configs | CompilationMode:wasm, RunKind:micro, RuntimeType:coreclr

### Regressions in System.Runtime.Intrinsics.Tests.Perf_Vector128Of<SByte>

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

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

| 7.29 μs | 9.38 μs | 1.29 | 0.31 | False | | |
|

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

| 735.11 ns | 810.97 ns | 1.10 | 0.44 | 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 'System.Runtime.Intrinsics.Tests.Perf_Vector128Of*'
```

### System.Runtime.Intrinsics.Tests.Perf_Vector128Of<SByte>.MultiplyOperatorBenchmark

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Runtime.Intrinsics.Tests.Perf_Vector128Of<SByte>.OnesComplementOperatorBenchmark

#### 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)