[Perf] Linux/x64: 1 Improvement on 9/3/2026 6:36:03 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [a4ec83ce5eb429ae06d11ac13b1881eaf6651b1c](https://github.com/dotnet/runtime/commit/a4ec83ce5eb429ae06d11ac13b1881eaf6651b1c)
Compare | [25f20c2fd360fc0d7c126e50f7c784f8338d6faf](https://github.com/dotnet/runtime/commit/25f20c2fd360fc0d7c126e50f7c784f8338d6faf)
Diff | [Diff](https://github.com/dotnet/runtime/compare/a4ec83ce5eb429ae06d11ac13b1881eaf6651b1c...25f20c2fd360fc0d7c126e50f7c784f8338d6faf)
Configs | CompilationMode:wasm, RunKind:micro, RuntimeType:coreclr

### Improvements in System.Collections.IterateForEach<String>

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

• [SortedList - Duration of single invocation]()
• 📝 - [Benchmark Source]()
• [ADX - Test Multi Config 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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.IterateForEach*'
```

### System.Collections.IterateForEach<String>.SortedList(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)

Start with the linked IterateForEach.cs benchmark and the baseline and compare commits; reproduce the System.Collections.IterateForEach.SortedList result using the documented benchmarks_ci.py command. Done is confirming and explaining the reported improvement or identifying the runtime change responsible, then recording the triage outcome.

Written by the indexing model from the issue text.