[Perf] Linux/x64: 2 Regressions on 5/20/2026 9:51:13 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [f397c835cc1c655505d2a22fd0cebb9e96733d0b](https://github.com/dotnet/runtime/commit/f397c835cc1c655505d2a22fd0cebb9e96733d0b)
Compare | [a49d0cf4bb262a0bb8a2ece002155cd0a4829dbd](https://github.com/dotnet/runtime/commit/a49d0cf4bb262a0bb8a2ece002155cd0a4829dbd)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f397c835cc1c655505d2a22fd0cebb9e96733d0b...a49d0cf4bb262a0bb8a2ece002155cd0a4829dbd)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Regressions in System.Numerics.Tests.Perf_VectorOf<UInt16>

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

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

| 2.51 ns | 4.83 ns | 1.92 | 0.48 | False | | |

![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.Numerics.Tests.Perf_VectorOf*'
```

### System.Numerics.Tests.Perf_VectorOf<UInt16>.ExclusiveOrOperatorBenchmark

#### 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)

---

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [f397c835cc1c655505d2a22fd0cebb9e96733d0b](https://github.com/dotnet/runtime/commit/f397c835cc1c655505d2a22fd0cebb9e96733d0b)
Compare | [a49d0cf4bb262a0bb8a2ece002155cd0a4829dbd](https://github.com/dotnet/runtime/commit/a49d0cf4bb262a0bb8a2ece002155cd0a4829dbd)
Diff | [Diff](https://github.com/dotnet/runtime/compare/f397c835cc1c655505d2a22fd0cebb9e96733d0b...a49d0cf4bb262a0bb8a2ece002155cd0a4829dbd)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Regressions in System.Numerics.Tests.Perf_Vector2

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

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

| 1.64 ns | 2.68 ns | 1.64 | 0.39 | False | | |

![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.Numerics.Tests.Perf_Vector2*'
```

### System.Numerics.Tests.Perf_Vector2.NegateBenchmark

#### 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)