[Perf] Linux/x64: 1 Improvement on 6/17/2026 6:19:41 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [1af2b9fda524303a30c5d14ac47bbf5510e06102](https://github.com/dotnet/runtime/commit/1af2b9fda524303a30c5d14ac47bbf5510e06102)
Compare | [d72d2fcf29301c5f9fe2c7188c90df93b0730989](https://github.com/dotnet/runtime/commit/d72d2fcf29301c5f9fe2c7188c90df93b0730989)
Diff | [Diff](https://github.com/dotnet/runtime/compare/1af2b9fda524303a30c5d14ac47bbf5510e06102...d72d2fcf29301c5f9fe2c7188c90df93b0730989)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Improvements in System.Numerics.Tests.Perf_Vector4

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

• [DivideByScalarBenchmark - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config 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.Numerics.Tests.Perf_Vector4*'
```

### System.Numerics.Tests.Perf_Vector4.DivideByScalarBenchmark

#### 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)

Start with the linked Perf_Vector4.cs benchmark at lines 93-94 and read the benchmark workflow documentation. Reproduce the System.Numerics.Tests.Perf_Vector4 results with the provided benchmarks_ci.py command, then compare the linked baseline and test reports to identify what changed. Done means explaining or addressing the reported DivideByScalarBenchmark performance result and validating it with the benchmark.

Written by the indexing model from the issue text.