[Perf] Windows/x64: 4 Improvements on 3/25/2025 5:51:52 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22621
Queue | TigerWindows
Baseline | [fa4c14e0d82447c25aa0fa4d9735c905e30836ac](https://github.com/dotnet/runtime/commit/fa4c14e0d82447c25aa0fa4d9735c905e30836ac)
Compare | [5266e7d30d2daa478470ae537496f1d54bd1cd5b](https://github.com/dotnet/runtime/commit/5266e7d30d2daa478470ae537496f1d54bd1cd5b)
Diff | [Diff](https://github.com/dotnet/runtime/compare/fa4c14e0d82447c25aa0fa4d9735c905e30836ac...5266e7d30d2daa478470ae537496f1d54bd1cd5b)
Configs | CompilationMode:tiered, RunKind:micro


### Improvements in System.Memory.Span&lt;Char&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[LastIndexOfValue - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Memory.Span(Char).LastIndexOfValue(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/Span.cs#L93-#L94>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 13.97 ns | 12.52 ns | 0.90 | 0.05 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_01_2025/refs/heads/main_x64_Windows%2010.0.22621_Improvement/System.Memory.Span%28Char%29_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_01_2025/refs/heads/main_x64_Windows%2010.0.22621_Improvement/System.Memory.Span%28Char%29.html>)

### 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.Memory.Span&lt;Char&gt;*'
```

<details>

### System.Memory.Span&lt;Char&gt;.LastIndexOfValue(Size: 512)

#### 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)

</details>


---


### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22621
Queue | TigerWindows
Baseline | [fa4c14e0d82447c25aa0fa4d9735c905e30836ac](https://github.com/dotnet/runtime/commit/fa4c14e0d82447c25aa0fa4d9735c905e30836ac)
Compare | [5266e7d30d2daa478470ae537496f1d54bd1cd5b](https://github.com/dotnet/runtime/commit/5266e7d30d2daa478470ae537496f1d54bd1cd5b)
Diff | [Diff](https://github.com/dotnet/runtime/compare/fa4c14e0d82447c25aa0fa4d9735c905e30836ac...5266e7d30d2daa478470ae537496f1d54bd1cd5b)
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
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[Convert_float_int - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Numerics.Tests.Perf_VectorConvert.Convert_float_int.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Numerics.Vectors/Perf_VectorConvert.cs#L32-#L33>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 1.13 μs | 1.03 μs | 0.91 | 0.02 | False | | |
|<ul><li>[Convert_int_float - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Numerics.Tests.Perf_VectorConvert.Convert_int_float.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Numerics.Vectors/Perf_VectorConvert.cs#L46-#L47>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 621.93 ns | 574.68 ns | 0.92 | 0.02 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_01_2025/refs/heads/main_x64_Windows%2010.0.22621_Improvement/System.Numerics.Tests.Perf_VectorConvert_001.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_01_2025/refs/heads/main_x64_Windows%2010.0.22621_Improvement/System.Numerics.Tests.Perf_VectorConvert_002.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_01_2025/refs/heads/main_x64_Windows%2010.0.22621_Improvement/System.Numerics.Tests.Perf_VectorConvert.html>)

### 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.Tests.Perf_VectorConvert*'
```

<details>

### System.Numerics.Tests.Perf_VectorConvert.Convert_float_int

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Numerics.Tests.Perf_VectorConvert.Convert_int_float

#### 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)

</details>


---


### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22621
Queue | TigerWindows
Baseline | [fa4c14e0d82447c25aa0fa4d9735c905e30836ac](https://github.com/dotnet/runtime/commit/fa4c14e0d82447c25aa0fa4d9735c905e30836ac)
Compare | [5266e7d30d2daa478470ae537496f1d54bd1cd5b](https://github.com/dotnet/runtime/commit/5266e7d30d2daa478470ae537496f1d54bd1cd5b)
Diff | [Diff](https://github.com/dotnet/runtime/compare/fa4c14e0d82447c25aa0fa4d9735c905e30836ac...5266e7d30d2daa478470ae537496f1d54bd1cd5b)
Configs | CompilationMode:tiered, RunKind:micro


### Improvements in System.Text.Perf_Ascii

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[ToUpper_Bytes_Chars - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_Windows 10.0.22621/System.Text.Perf_Ascii.ToUpper_Bytes_Chars(Size%3a%20128).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Text.Encoding/Perf.Ascii.cs#L95-#L96>)</li><li>[ADX - Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 19.64 ns | 17.61 ns | 0.90 | 0.27 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_01_2025/refs/heads/main_x64_Windows%2010.0.22621_Improvement/System.Text.Perf_Ascii_001.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/04_01_2025/refs/heads/main_x64_Windows%2010.0.22621_Improvement/System.Text.Perf_Ascii.html>)

### 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.Text.Perf_Ascii*'
```

<details>

### System.Text.Perf_Ascii.ToUpper_Bytes_Chars(Size: 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)

</details>

Name	Value
Architecture	x64
OS	Windows 10.0.22621
Queue	TigerWindows
Baseline	fa4c14e0d82447c25aa0fa4d9735c905e30836ac
Compare	5266e7d30d2daa478470ae537496f1d54bd1cd5b
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
Convert_float_int - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	1.13 μs	1.03 μs	0.91	0.02	False
Convert_int_float - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	621.93 ns	574.68 ns	0.92	0.02	False

[Perf] Windows/x64: 4 Improvements on 3/25/2025 5:51:52 PM +00:00 #52705

Description

Run Information

Improvements in System.Memory.Span<Char>

Repro

System.Memory.Span<Char>.LastIndexOfValue(Size: 512)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Improvements in System.Numerics.Tests.Perf_VectorConvert

Repro

System.Numerics.Tests.Perf_VectorConvert.Convert_float_int

ETL Files

Histogram

JIT Disasms

System.Numerics.Tests.Perf_VectorConvert.Convert_int_float

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Improvements in System.Text.Perf_Ascii

Repro

System.Text.Perf_Ascii.ToUpper_Bytes_Chars(Size: 128)

ETL Files

Histogram

JIT Disasms

Docs

Metadata

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