[Perf] Linux/x64: 1 Regression on 9/8/2026 11:42:47 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [335260c10135059cce58b89cf2de024d1cdd8847](https://github.com/dotnet/runtime/commit/335260c10135059cce58b89cf2de024d1cdd8847)
Compare | [ea09718b076f295c3c864d5419fc1a531c09a7df](https://github.com/dotnet/runtime/commit/ea09718b076f295c3c864d5419fc1a531c09a7df)
Diff | [Diff](https://github.com/dotnet/runtime/compare/335260c10135059cce58b89cf2de024d1cdd8847...ea09718b076f295c3c864d5419fc1a531c09a7df)
Configs | AOT:true, CompilationMode:wasm, RunKind:micro

### Regressions in System.Numerics.Tensors.Tests.Perf_FloatingPointTensorPrimitives<Double>

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

• [Log - 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.Tensors.Tests.Perf_FloatingPointTensorPrimitives*'
```

### System.Numerics.Tensors.Tests.Perf_FloatingPointTensorPrimitives<Double>.Log(BufferLength: 3079)

#### 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 benchmark source in performance/src/benchmarks/micro/libraries/System.Numerics.Tensors/Perf_FloatingPointTensorPrimitives.cs and the linked performance report. Follow the benchmarking workflow docs, run the provided benchmarks_ci.py command, and compare the reported Log result with the baseline and comparison commits. Done means confirming the regression and identifying its cause or a validated resolution.

Written by the indexing model from the issue text.