[Perf] Linux/x64: 1 Improvement on 8/7/2026 9:57:17 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [9bf3be3ad48e77e97436fa96825cb713a6964389](https://github.com/dotnet/runtime/commit/9bf3be3ad48e77e97436fa96825cb713a6964389)
Compare | [7da460b99b9c7e76b3060ef6da6687a008263ab9](https://github.com/dotnet/runtime/commit/7da460b99b9c7e76b3060ef6da6687a008263ab9)
Diff | [Diff](https://github.com/dotnet/runtime/compare/9bf3be3ad48e77e97436fa96825cb713a6964389...7da460b99b9c7e76b3060ef6da6687a008263ab9)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Numerics.Tests.Perf_VectorConvert

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

• [Narrow_int - 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_VectorConvert*'
```

### System.Numerics.Tests.Perf_VectorConvert.Narrow_int

#### 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)

Read the benchmark source in performance/src/benchmarks/micro/libraries/System.Numerics.Vectors/Perf_VectorConvert.cs at lines 68-69, then run the provided benchmarks_ci.py command for Perf_VectorConvert. Compare the Narrow_int result with the linked baseline, test report, and runtime commits; done requires a confirmed, actionable explanation or follow-up for the reported performance change.

Written by the indexing model from the issue text.