[Perf] Linux/arm64: 2 Improvements on 4/9/2026 4:29:03 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | ubuntu 22.04
Queue | AmpereUbuntu
Baseline | [93578ff5a25cfd9079ccaa9fa4a075e7f340855c](https://github.com/dotnet/runtime/commit/93578ff5a25cfd9079ccaa9fa4a075e7f340855c)
Compare | [6b6a8b5f46ba62baa83bf5391c3ce093d0b30c4c](https://github.com/dotnet/runtime/commit/6b6a8b5f46ba62baa83bf5391c3ce093d0b30c4c)
Diff | [Diff](https://github.com/dotnet/runtime/compare/93578ff5a25cfd9079ccaa9fa4a075e7f340855c...6b6a8b5f46ba62baa83bf5391c3ce093d0b30c4c)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Collections.Sort<IntStruct>

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

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

| 6.77 μs | 5.20 μs | 0.77 | 0.05 | False | | |
|

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

| 6.66 μs | 5.21 μs | 0.78 | 0.19 | 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.Collections.Sort*'
```

### System.Collections.Sort<IntStruct>.Array(Size: 512)

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Collections.Sort<IntStruct>.List(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)