[Perf] Windows/x64: 4 Improvements on 6/23/2026 2:47:31 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [4e663ebdcf1759b3bc787d069977a2bf35b90779](https://github.com/dotnet/runtime/commit/4e663ebdcf1759b3bc787d069977a2bf35b90779)
Compare | [461fd2adbf736b4298d9a0c58ad8dbcecaf83629](https://github.com/dotnet/runtime/commit/461fd2adbf736b4298d9a0c58ad8dbcecaf83629)
Diff | [Diff](https://github.com/dotnet/runtime/compare/4e663ebdcf1759b3bc787d069977a2bf35b90779...461fd2adbf736b4298d9a0c58ad8dbcecaf83629)
Configs | CompilationMode:tiered, RunKind:micro

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

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

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

| 16.70 μs | 15.00 μs | 0.90 | 0.10 | False | | |
|

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

| 16.69 μs | 15.02 μs | 0.90 | 0.10 | False | | |
|

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

| 696.15 ns | 627.99 ns | 0.90 | 0.08 | False | | |

![graph]()
![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.Numerics.Tensors.Tests.Perf_FloatingPointTensorPrimitives*'
```

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

#### ETL Files

#### Histogram

#### JIT Disasms

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

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Numerics.Tensors.Tests.Perf_FloatingPointTensorPrimitives<Double>.Pow_ScalarBase(BufferLength: 128)

#### 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 | Windows 10.0.22631
Queue | ViperWindows
Baseline | [4e663ebdcf1759b3bc787d069977a2bf35b90779](https://github.com/dotnet/runtime/commit/4e663ebdcf1759b3bc787d069977a2bf35b90779)
Compare | [461fd2adbf736b4298d9a0c58ad8dbcecaf83629](https://github.com/dotnet/runtime/commit/461fd2adbf736b4298d9a0c58ad8dbcecaf83629)
Diff | [Diff](https://github.com/dotnet/runtime/compare/4e663ebdcf1759b3bc787d069977a2bf35b90779...461fd2adbf736b4298d9a0c58ad8dbcecaf83629)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Tests.Perf_Char

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

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

| 8.52 ns | 7.32 ns | 0.86 | 0.06 | 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_Char*'
```

### System.Tests.Perf_Char.Char_ToLowerInvariant(input: "Hello World!")

#### 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 sources named in the report: src/benchmarks/micro/libraries/System.Numerics.Tensors/Perf_FloatingPointTensorPrimitives.cs and src/benchmarks/micro/libraries/System.Runtime/Perf.Char.cs. Run the provided benchmarks_ci.py commands and compare the linked reports and baseline commits; this is done when the measured improvements have been explained and any actionable runtime change is identified.

Written by the indexing model from the issue text.