[Perf] Windows/x86: 1 Improvement on 8/28/2026 12:45:54 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x86
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [3174387aedaebdb35da41426e61ecc1b8d60bc47](https://github.com/dotnet/runtime/commit/3174387aedaebdb35da41426e61ecc1b8d60bc47)
Compare | [398b6c5d572103decd5cfec64121384bcffc01bc](https://github.com/dotnet/runtime/commit/398b6c5d572103decd5cfec64121384bcffc01bc)
Diff | [Diff](https://github.com/dotnet/runtime/compare/3174387aedaebdb35da41426e61ecc1b8d60bc47...398b6c5d572103decd5cfec64121384bcffc01bc)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Tests.Perf_Array

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

• [ArrayRetrieve1D - 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_Array*'
```

### System.Tests.Perf_Array.ArrayRetrieve1D

#### 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 benchmark source in src/benchmarks/micro/libraries/System.Runtime/Perf.Array.cs, especially ArrayRetrieve1D, and reproduce it with the provided benchmarks_ci.py command. The report identifies an improvement rather than a requested change, so completion is not defined until triage establishes what runtime or benchmark work is intended.

Written by the indexing model from the issue text.