18 regressions around string

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 20.04
Queue | AmpereUbuntu
Baseline | [653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a](https://github.com/dotnet/runtime/commit/653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a)
Compare | [db90a849eab60d9843b8151ab14ba998faee3825](https://github.com/dotnet/runtime/commit/db90a849eab60d9843b8151ab14ba998faee3825)
Diff | [Diff](https://github.com/dotnet/runtime/compare/653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a...db90a849eab60d9843b8151ab14ba998faee3825)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Memory.ReadOnlySpan

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[IndexOfString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Memory.ReadOnlySpan.IndexOfString(input%3a%20%22AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAXAAAAAAAAAAAAAAAAAAAAAAAAAAAAA%22%2c%20value%3a%20%22x%22%2c%20comparisonType%3a%20InvariantCultureIgno.html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/ReadOnlySpan.cs#L45-#L64>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 281.85 ns | 305.54 ns | 1.08 | 0.00 | True | | |
|<ul><li>[IndexOfString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Memory.ReadOnlySpan.IndexOfString(input%3a%20%22foobardzsdzs%22%2c%20value%3a%20%22rddzs%22%2c%20comparisonType%3a%20InvariantCulture).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Memory/ReadOnlySpan.cs#L45-#L64>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 39.53 ns | 41.72 ns | 1.06 | 0.01 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Memory.ReadOnlySpan_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Memory.ReadOnlySpan_2.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Memory.ReadOnlySpan.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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Memory.ReadOnlySpan*'
```

<details>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-d6de431f-8ce0-45cb-8152-c4aa733606d4a005488083748cbaf/acaf8050-9a1f-4e2d-80e1-e0a4e8c7208b.zip?sv=2021-08-06&se=2024-02-02T07%3A45%3A31Z&sr=c&sp=rl&sig=aS2dZq4ef16TV2aQGAzBOqq6%2BSNhVyfnDFh0QwNPv8k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9ed82843-f806-4c14-964e-5138013bc29f7ed545e343d42a182/05793ed5-e305-444e-839e-c92c97a3582d.zip?sv=2021-08-06&se=2024-02-03T08%3A22%3A55Z&sr=c&sp=rl&sig=cGgbG7VEL8b8jxE%2FgQFEdAMs2cT7d5AQkmUPmJBSF%2F0%3D>)
### System.Memory.ReadOnlySpan.IndexOfString(input: "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAXAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", value: "x", comparisonType: InvariantCultureIgnoreCase)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Memory.ReadOnlySpan.IndexOfString(input: "foobardzsdzs", value: "rddzs", comparisonType: InvariantCulture)

#### 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 | arm64
OS | ubuntu 20.04
Queue | AmpereUbuntu
Baseline | [653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a](https://github.com/dotnet/runtime/commit/653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a)
Compare | [db90a849eab60d9843b8151ab14ba998faee3825](https://github.com/dotnet/runtime/commit/db90a849eab60d9843b8151ab14ba998faee3825)
Diff | [Diff](https://github.com/dotnet/runtime/compare/653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a...db90a849eab60d9843b8151ab14ba998faee3825)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Globalization.Tests.StringSearch

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[IndexOf_Word_NotFound - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options%3a%20(%2c%20IgnoreCase%2c%20False)).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Globalization/StringSearch.cs#L99-#L100>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 764.65 ns | 918.99 ns | 1.20 | 0.02 | False | | |
|<ul><li>[LastIndexOf_Word_NotFound - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Globalization.Tests.StringSearch.LastIndexOf_Word_NotFound(Options%3a%20(en-US%2c%20None%2c%20False)).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Globalization/StringSearch.cs#L102-#L103>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 550.64 ns | 624.74 ns | 1.13 | 0.01 | True | | |
|<ul><li>[LastIndexOf_Word_NotFound - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Globalization.Tests.StringSearch.LastIndexOf_Word_NotFound(Options%3a%20(en-US%2c%20IgnoreNonSpace%2c%20False)).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Globalization/StringSearch.cs#L102-#L103>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 550.88 ns | 624.49 ns | 1.13 | 0.00 | True | | |
|<ul><li>[IndexOf_Word_NotFound - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options%3a%20(en-US%2c%20IgnoreNonSpace%2c%20False)).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Globalization/StringSearch.cs#L99-#L100>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 548.58 ns | 627.24 ns | 1.14 | 0.01 | True | | |
|<ul><li>[IndexOf_Word_NotFound - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options%3a%20(%2c%20None%2c%20False)).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Globalization/StringSearch.cs#L99-#L100>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=H4sIAAAAAAAACo2Ub4/SQBDG35v4HfZdW+1B4U68kNTI4aGocAgkvjCGLO3Qrtk/zez2rr0YP7u7heDBJaZvmu709zwzO5npDKguEQRIo1/8Jg85IJCbkvF0CYUicUy8VBkJpoulNEyAd0rdIJVJ3nAIO93Ngaa6KyiTZ+AIk5wZSIzNRpgkvlcNrryQeBSFfQmO9Bq0mVMBzvO9t6q1AdH5yNWWcvZIDVOy4xDdWRlkMlsBtc6dqUyhutttvitMN3NlJqqUqX9XOF4PiR+SuZIQkgnlGoLgX3HLUo6V3LGsxMZc//DGShSMN6eZSsH7SeI/xDPM4qn38n9KG/rCZHpQCJageiJgGkRhav+ZcKRM0AKbKv2V34umnW34z/pWZkxCG9YZt+FmSqqW5Tp0Kg1ggWCfbSSLTK3rolXBi7zWLKF8gUooF2kr/FRvkaUnA9VGtuwv22a4rQpAuyqymePTyR7bubTNWKvi8Ha6JWsrWxkqCvKOpNSA2zi/H/UvL3q9i6i3jq6HUW8Yve0MrvtXbwa911E0jCKXQpdCUGSPQChmG0ErvzF0FYTkVUC29VmG8LhpoRvlbyWUYH0KVL/slj6Dl6BLbmJs9urJTfbx0T0gzazTZRCSxsoZxxNkIFNeHyOuWc3BlYz2GyBxd0xyioY8MJMTX9vmgY6PmpBUieKlkPF5TfU+ruN9ERY0zHCIvQ+2dfbfUh+OTkJ8qQMX0wVnJqYV6OAv+iugD/0EAAA=>)</li></ul> | 548.20 ns | 626.93 ns | 1.14 | 0.01 | True | | |
|<ul><li>[LastIndexOf_Word_NotFound - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Globalization.Tests.StringSearch.LastIndexOf_Word_NotFound(Options%3a%20(%2c%20IgnoreCase%2c%20False)).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Globalization/StringSearch.cs#L102-#L103>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 777.39 ns | 955.31 ns | 1.23 | 0.02 | True | | |
|<ul><li>[IndexOf_Word_NotFound - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options%3a%20(en-US%2c%20IgnoreCase%2c%20False)).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Globalization/StringSearch.cs#L99-#L100>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 765.15 ns | 914.83 ns | 1.20 | 0.03 | False | | |
|<ul><li>[IndexOf_Word_NotFound - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options%3a%20(en-US%2c%20None%2c%20False)).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Globalization/StringSearch.cs#L99-#L100>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 548.93 ns | 627.03 ns | 1.14 | 0.01 | True | | |
|<ul><li>[LastIndexOf_Word_NotFound - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Globalization.Tests.StringSearch.LastIndexOf_Word_NotFound(Options%3a%20(%2c%20None%2c%20False)).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Globalization/StringSearch.cs#L102-#L103>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 551.30 ns | 622.67 ns | 1.13 | 0.01 | True | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Globalization.Tests.StringSearch_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Globalization.Tests.StringSearch_2.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Globalization.Tests.StringSearch_3.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Globalization.Tests.StringSearch_4.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Globalization.Tests.StringSearch_5.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Globalization.Tests.StringSearch_6.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Globalization.Tests.StringSearch_7.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Globalization.Tests.StringSearch_8.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Globalization.Tests.StringSearch_9.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Globalization.Tests.StringSearch.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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Globalization.Tests.StringSearch*'
```

<details>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-d6de431f-8ce0-45cb-8152-c4aa733606d4a005488083748cbaf/acaf8050-9a1f-4e2d-80e1-e0a4e8c7208b.zip?sv=2021-08-06&se=2024-02-02T07%3A45%3A31Z&sr=c&sp=rl&sig=aS2dZq4ef16TV2aQGAzBOqq6%2BSNhVyfnDFh0QwNPv8k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9ed82843-f806-4c14-964e-5138013bc29f7ed545e343d42a182/05793ed5-e305-444e-839e-c92c97a3582d.zip?sv=2021-08-06&se=2024-02-03T08%3A22%3A55Z&sr=c&sp=rl&sig=cGgbG7VEL8b8jxE%2FgQFEdAMs2cT7d5AQkmUPmJBSF%2F0%3D>)
### System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options: (, IgnoreCase, False))

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Globalization.Tests.StringSearch.LastIndexOf_Word_NotFound(Options: (en-US, None, False))

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Globalization.Tests.StringSearch.LastIndexOf_Word_NotFound(Options: (en-US, IgnoreNonSpace, False))

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options: (en-US, IgnoreNonSpace, False))

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options: (, None, False))

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Globalization.Tests.StringSearch.LastIndexOf_Word_NotFound(Options: (, IgnoreCase, False))

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options: (en-US, IgnoreCase, False))

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options: (en-US, None, False))

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Globalization.Tests.StringSearch.LastIndexOf_Word_NotFound(Options: (, None, False))

#### 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 | arm64
OS | ubuntu 20.04
Queue | AmpereUbuntu
Baseline | [653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a](https://github.com/dotnet/runtime/commit/653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a)
Compare | [db90a849eab60d9843b8151ab14ba998faee3825](https://github.com/dotnet/runtime/commit/db90a849eab60d9843b8151ab14ba998faee3825)
Diff | [Diff](https://github.com/dotnet/runtime/compare/653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a...db90a849eab60d9843b8151ab14ba998faee3825)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.TryGetValueFalse&lt;String, String&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[FrozenDictionaryOptimized - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Collections.TryGetValueFalse(String%2c%20String).FrozenDictionaryOptimized(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/TryGetValue/TryGetValueFalse.cs#L132-#L141>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 9.30 μs | 9.98 μs | 1.07 | 0.00 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Collections.TryGetValueFalse%28String%2C%20String%29_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Collections.TryGetValueFalse%28String%2C%20String%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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.TryGetValueFalse&lt;String, String&gt;*'
```

<details>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-d6de431f-8ce0-45cb-8152-c4aa733606d4a005488083748cbaf/acaf8050-9a1f-4e2d-80e1-e0a4e8c7208b.zip?sv=2021-08-06&se=2024-02-02T07%3A45%3A31Z&sr=c&sp=rl&sig=aS2dZq4ef16TV2aQGAzBOqq6%2BSNhVyfnDFh0QwNPv8k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9ed82843-f806-4c14-964e-5138013bc29f7ed545e343d42a182/05793ed5-e305-444e-839e-c92c97a3582d.zip?sv=2021-08-06&se=2024-02-03T08%3A22%3A55Z&sr=c&sp=rl&sig=cGgbG7VEL8b8jxE%2FgQFEdAMs2cT7d5AQkmUPmJBSF%2F0%3D>)
### System.Collections.TryGetValueFalse&lt;String, String&gt;.FrozenDictionaryOptimized(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 | arm64
OS | ubuntu 20.04
Queue | AmpereUbuntu
Baseline | [653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a](https://github.com/dotnet/runtime/commit/653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a)
Compare | [db90a849eab60d9843b8151ab14ba998faee3825](https://github.com/dotnet/runtime/commit/db90a849eab60d9843b8151ab14ba998faee3825)
Diff | [Diff](https://github.com/dotnet/runtime/compare/653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a...db90a849eab60d9843b8151ab14ba998faee3825)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.IterateFor&lt;String&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[ReadOnlySpan - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Collections.IterateFor(String).ReadOnlySpan(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Iterate/IterateFor.cs#L59-#L68>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 205.29 ns | 222.17 ns | 1.08 | 0.02 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Collections.IterateFor%28String%29_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Collections.IterateFor%28String%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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.IterateFor&lt;String&gt;*'
```

<details>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-d6de431f-8ce0-45cb-8152-c4aa733606d4a005488083748cbaf/acaf8050-9a1f-4e2d-80e1-e0a4e8c7208b.zip?sv=2021-08-06&se=2024-02-02T07%3A45%3A31Z&sr=c&sp=rl&sig=aS2dZq4ef16TV2aQGAzBOqq6%2BSNhVyfnDFh0QwNPv8k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9ed82843-f806-4c14-964e-5138013bc29f7ed545e343d42a182/05793ed5-e305-444e-839e-c92c97a3582d.zip?sv=2021-08-06&se=2024-02-03T08%3A22%3A55Z&sr=c&sp=rl&sig=cGgbG7VEL8b8jxE%2FgQFEdAMs2cT7d5AQkmUPmJBSF%2F0%3D>)
### System.Collections.IterateFor&lt;String&gt;.ReadOnlySpan(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 | arm64
OS | ubuntu 20.04
Queue | AmpereUbuntu
Baseline | [653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a](https://github.com/dotnet/runtime/commit/653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a)
Compare | [db90a849eab60d9843b8151ab14ba998faee3825](https://github.com/dotnet/runtime/commit/db90a849eab60d9843b8151ab14ba998faee3825)
Diff | [Diff](https://github.com/dotnet/runtime/compare/653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a...db90a849eab60d9843b8151ab14ba998faee3825)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.Perf_DefaultFrozenDictionary

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[TryGetValue_False_FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Collections.Perf_DefaultFrozenDictionary.TryGetValue_False_FrozenDictionary(Count%3a%201000).html>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 19.47 μs | 21.31 μs | 1.09 | 0.01 | True | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Collections.Perf_DefaultFrozenDictionary_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Collections.Perf_DefaultFrozenDictionary.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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.Perf_DefaultFrozenDictionary*'
```

<details>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-d6de431f-8ce0-45cb-8152-c4aa733606d4a005488083748cbaf/acaf8050-9a1f-4e2d-80e1-e0a4e8c7208b.zip?sv=2021-08-06&se=2024-02-02T07%3A45%3A31Z&sr=c&sp=rl&sig=aS2dZq4ef16TV2aQGAzBOqq6%2BSNhVyfnDFh0QwNPv8k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9ed82843-f806-4c14-964e-5138013bc29f7ed545e343d42a182/05793ed5-e305-444e-839e-c92c97a3582d.zip?sv=2021-08-06&se=2024-02-03T08%3A22%3A55Z&sr=c&sp=rl&sig=cGgbG7VEL8b8jxE%2FgQFEdAMs2cT7d5AQkmUPmJBSF%2F0%3D>)
### System.Collections.Perf_DefaultFrozenDictionary.TryGetValue_False_FrozenDictionary(Count: 1000)

#### 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 | arm64
OS | ubuntu 20.04
Queue | AmpereUbuntu
Baseline | [653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a](https://github.com/dotnet/runtime/commit/653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a)
Compare | [db90a849eab60d9843b8151ab14ba998faee3825](https://github.com/dotnet/runtime/commit/db90a849eab60d9843b8151ab14ba998faee3825)
Diff | [Diff](https://github.com/dotnet/runtime/compare/653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a...db90a849eab60d9843b8151ab14ba998faee3825)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.ContainsTrue&lt;String&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[FrozenSet - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Collections.ContainsTrue(String).FrozenSet(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Contains/ContainsTrue.cs#L272-#L281>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 9.81 μs | 10.39 μs | 1.06 | 0.00 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Collections.ContainsTrue%28String%29_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Collections.ContainsTrue%28String%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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.ContainsTrue&lt;String&gt;*'
```

<details>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-d6de431f-8ce0-45cb-8152-c4aa733606d4a005488083748cbaf/acaf8050-9a1f-4e2d-80e1-e0a4e8c7208b.zip?sv=2021-08-06&se=2024-02-02T07%3A45%3A31Z&sr=c&sp=rl&sig=aS2dZq4ef16TV2aQGAzBOqq6%2BSNhVyfnDFh0QwNPv8k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9ed82843-f806-4c14-964e-5138013bc29f7ed545e343d42a182/05793ed5-e305-444e-839e-c92c97a3582d.zip?sv=2021-08-06&se=2024-02-03T08%3A22%3A55Z&sr=c&sp=rl&sig=cGgbG7VEL8b8jxE%2FgQFEdAMs2cT7d5AQkmUPmJBSF%2F0%3D>)
### System.Collections.ContainsTrue&lt;String&gt;.FrozenSet(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 | arm64
OS | ubuntu 20.04
Queue | AmpereUbuntu
Baseline | [653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a](https://github.com/dotnet/runtime/commit/653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a)
Compare | [db90a849eab60d9843b8151ab14ba998faee3825](https://github.com/dotnet/runtime/commit/db90a849eab60d9843b8151ab14ba998faee3825)
Diff | [Diff](https://github.com/dotnet/runtime/compare/653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a...db90a849eab60d9843b8151ab14ba998faee3825)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.IterateForEach&lt;String&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[ReadOnlySpan - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Collections.IterateForEach(String).ReadOnlySpan(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Iterate/IterateForEach.cs#L74-#L83>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 205.29 ns | 222.18 ns | 1.08 | 0.01 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Collections.IterateForEach%28String%29_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Collections.IterateForEach%28String%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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.IterateForEach&lt;String&gt;*'
```

<details>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-d6de431f-8ce0-45cb-8152-c4aa733606d4a005488083748cbaf/acaf8050-9a1f-4e2d-80e1-e0a4e8c7208b.zip?sv=2021-08-06&se=2024-02-02T07%3A45%3A31Z&sr=c&sp=rl&sig=aS2dZq4ef16TV2aQGAzBOqq6%2BSNhVyfnDFh0QwNPv8k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9ed82843-f806-4c14-964e-5138013bc29f7ed545e343d42a182/05793ed5-e305-444e-839e-c92c97a3582d.zip?sv=2021-08-06&se=2024-02-03T08%3A22%3A55Z&sr=c&sp=rl&sig=cGgbG7VEL8b8jxE%2FgQFEdAMs2cT7d5AQkmUPmJBSF%2F0%3D>)
### System.Collections.IterateForEach&lt;String&gt;.ReadOnlySpan(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 | arm64
OS | ubuntu 20.04
Queue | AmpereUbuntu
Baseline | [653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a](https://github.com/dotnet/runtime/commit/653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a)
Compare | [db90a849eab60d9843b8151ab14ba998faee3825](https://github.com/dotnet/runtime/commit/db90a849eab60d9843b8151ab14ba998faee3825)
Diff | [Diff](https://github.com/dotnet/runtime/compare/653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a...db90a849eab60d9843b8151ab14ba998faee3825)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.ContainsKeyFalse&lt;String, String&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Collections.ContainsKeyFalse(String%2c%20String).FrozenDictionary(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Contains/ContainsKeyFalse.cs#L132-#L141>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 9.30 μs | 9.77 μs | 1.05 | 0.00 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Collections.ContainsKeyFalse%28String%2C%20String%29_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Collections.ContainsKeyFalse%28String%2C%20String%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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.ContainsKeyFalse&lt;String, String&gt;*'
```

<details>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-d6de431f-8ce0-45cb-8152-c4aa733606d4a005488083748cbaf/acaf8050-9a1f-4e2d-80e1-e0a4e8c7208b.zip?sv=2021-08-06&se=2024-02-02T07%3A45%3A31Z&sr=c&sp=rl&sig=aS2dZq4ef16TV2aQGAzBOqq6%2BSNhVyfnDFh0QwNPv8k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9ed82843-f806-4c14-964e-5138013bc29f7ed545e343d42a182/05793ed5-e305-444e-839e-c92c97a3582d.zip?sv=2021-08-06&se=2024-02-03T08%3A22%3A55Z&sr=c&sp=rl&sig=cGgbG7VEL8b8jxE%2FgQFEdAMs2cT7d5AQkmUPmJBSF%2F0%3D>)
### System.Collections.ContainsKeyFalse&lt;String, String&gt;.FrozenDictionary(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 | arm64
OS | ubuntu 20.04
Queue | AmpereUbuntu
Baseline | [653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a](https://github.com/dotnet/runtime/commit/653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a)
Compare | [db90a849eab60d9843b8151ab14ba998faee3825](https://github.com/dotnet/runtime/commit/db90a849eab60d9843b8151ab14ba998faee3825)
Diff | [Diff](https://github.com/dotnet/runtime/compare/653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a...db90a849eab60d9843b8151ab14ba998faee3825)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.ContainsKeyTrue&lt;String, String&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio
-- | -- | -- | -- | -- | -- | -- | -- | --
|<ul><li>[FrozenDictionary - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_ubuntu 20.04/System.Collections.ContainsKeyTrue(String%2c%20String).FrozenDictionary(Size%3a%20512).html>)</li><li>📝 - [Benchmark Source](<https://github.com/dotnet/performance/blob/main/src/benchmarks/micro/libraries/System.Collections/Contains/ContainsKeyTrue.cs#L130-#L139>)</li><li>[📈 - ADX Test Multi Config Graph](<https://dataexplorer.azure.com/clusters/dotnetperf.westus/databases/PerformanceData?query=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>)</li></ul> | 10.05 μs | 10.68 μs | 1.06 | 0.00 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Collections.ContainsKeyTrue%28String%2C%20String%29_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/02_01_2024/refs/heads/main_arm64_ubuntu%2020.04_Regression/System.Collections.ContainsKeyTrue%28String%2C%20String%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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.ContainsKeyTrue&lt;String, String&gt;*'
```

<details>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-d6de431f-8ce0-45cb-8152-c4aa733606d4a005488083748cbaf/acaf8050-9a1f-4e2d-80e1-e0a4e8c7208b.zip?sv=2021-08-06&se=2024-02-02T07%3A45%3A31Z&sr=c&sp=rl&sig=aS2dZq4ef16TV2aQGAzBOqq6%2BSNhVyfnDFh0QwNPv8k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-9ed82843-f806-4c14-964e-5138013bc29f7ed545e343d42a182/05793ed5-e305-444e-839e-c92c97a3582d.zip?sv=2021-08-06&se=2024-02-03T08%3A22%3A55Z&sr=c&sp=rl&sig=cGgbG7VEL8b8jxE%2FgQFEdAMs2cT7d5AQkmUPmJBSF%2F0%3D>)
### System.Collections.ContainsKeyTrue&lt;String, String&gt;.FrozenDictionary(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>

Name	Value
Architecture	arm64
OS	ubuntu 20.04
Queue	AmpereUbuntu
Baseline	653739cc0e4f6c7a44e4cda6c9ac8bb2a265505a
Compare	db90a849eab60d9843b8151ab14ba998faee3825
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
IndexOfString - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	281.85 ns	305.54 ns	1.08	0.00	True
IndexOfString - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	39.53 ns	41.72 ns	1.06	0.01	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
IndexOf_Word_NotFound - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	764.65 ns	918.99 ns	1.20	0.02	False
LastIndexOf_Word_NotFound - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	550.64 ns	624.74 ns	1.13	0.01	True
LastIndexOf_Word_NotFound - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	550.88 ns	624.49 ns	1.13	0.00	True
IndexOf_Word_NotFound - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	548.58 ns	627.24 ns	1.14	0.01	True
IndexOf_Word_NotFound - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	548.20 ns	626.93 ns	1.14	0.01	True
LastIndexOf_Word_NotFound - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	777.39 ns	955.31 ns	1.23	0.02	True
IndexOf_Word_NotFound - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	765.15 ns	914.83 ns	1.20	0.03	False
IndexOf_Word_NotFound - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	548.93 ns	627.03 ns	1.14	0.01	True
LastIndexOf_Word_NotFound - Duration of single invocation 📝 - Benchmark Source 📈 - ADX Test Multi Config Graph	551.30 ns	622.67 ns	1.13	0.01	True

18 regressions around string #97825

Description

Run Information

Regressions in System.Memory.ReadOnlySpan

Repro

Payloads

System.Memory.ReadOnlySpan.IndexOfString(input: "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAXAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", value: "x", comparisonType: InvariantCultureIgnoreCase)

ETL Files

Histogram

JIT Disasms

System.Memory.ReadOnlySpan.IndexOfString(input: "foobardzsdzs", value: "rddzs", comparisonType: InvariantCulture)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Globalization.Tests.StringSearch

Repro

Payloads

System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options: (, IgnoreCase, False))

ETL Files

Histogram

JIT Disasms

System.Globalization.Tests.StringSearch.LastIndexOf_Word_NotFound(Options: (en-US, None, False))

ETL Files

Histogram

JIT Disasms

System.Globalization.Tests.StringSearch.LastIndexOf_Word_NotFound(Options: (en-US, IgnoreNonSpace, False))

ETL Files

Histogram

JIT Disasms

System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options: (en-US, IgnoreNonSpace, False))

ETL Files

Histogram

JIT Disasms

System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options: (, None, False))

ETL Files

Histogram

JIT Disasms

System.Globalization.Tests.StringSearch.LastIndexOf_Word_NotFound(Options: (, IgnoreCase, False))

ETL Files

Histogram

JIT Disasms

System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options: (en-US, IgnoreCase, False))

ETL Files

Histogram

JIT Disasms

System.Globalization.Tests.StringSearch.IndexOf_Word_NotFound(Options: (en-US, None, False))

ETL Files

Histogram

JIT Disasms

System.Globalization.Tests.StringSearch.LastIndexOf_Word_NotFound(Options: (, None, False))

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Collections.TryGetValueFalse<String, String>

Repro

Payloads

System.Collections.TryGetValueFalse<String, String>.FrozenDictionaryOptimized(Size: 512)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Collections.IterateFor<String>

Repro

Payloads

System.Collections.IterateFor<String>.ReadOnlySpan(Size: 512)

ETL Files

Histogram

JIT Disasms

Docs

Run Information

Regressions in System.Collections.Perf_DefaultFrozenDictionary

Repro

Payloads

System.Collections.Perf_DefaultFrozenDictionary.TryGetValue_False_FrozenDictionary(Count: 1000)

ETL Files