[Perf] Linux/x64: 4 Improvements on 3/28/2026 5:16:24 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [3e902855154615baa4a2a7584db75beeeb0fad97](https://github.com/dotnet/runtime/commit/3e902855154615baa4a2a7584db75beeeb0fad97)
Compare | [28be713618d08ef4cce1779fbc3bf5fdc59e4182](https://github.com/dotnet/runtime/commit/28be713618d08ef4cce1779fbc3bf5fdc59e4182)
Diff | [Diff](https://github.com/dotnet/runtime/compare/3e902855154615baa4a2a7584db75beeeb0fad97...28be713618d08ef4cce1779fbc3bf5fdc59e4182)
Configs | CompilationMode:wasm, RunKind:micro, RuntimeType:coreclr

### Improvements in System.Text.RegularExpressions.Tests.Perf_Regex_Common

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

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

| 149.27 μs | 94.47 μs | 0.63 | 0.44 | False | | |
|

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

| 4.67 ms | 3.59 ms | 0.77 | 0.40 | False | | |
|

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

| 4.24 ms | 3.47 ms | 0.82 | 0.43 | False | | |
|

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

| 4.12 ms | 3.48 ms | 0.84 | 0.32 | False | | |

[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.Text.RegularExpressions.Tests.Perf_Regex_Common*'
```

### System.Text.RegularExpressions.Tests.Perf_Regex_Common.MatchWord(Options: None)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.RegularExpressions.Tests.Perf_Regex_Common.ReplaceWords(Options: None)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.RegularExpressions.Tests.Perf_Regex_Common.MatchesWords(Options: None)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Text.RegularExpressions.Tests.Perf_Regex_Common.SplitWords(Options: None)

#### 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)