[Perf] Linux/x64: 1 Improvement on 7/19/2026 2:42:16 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [13c03a4a9a854291f77636b1e15038e65919e68b](https://github.com/dotnet/runtime/commit/13c03a4a9a854291f77636b1e15038e65919e68b)
Compare | [2515f972d25ec6ab5868f696273bd02a6275e273](https://github.com/dotnet/runtime/commit/2515f972d25ec6ab5868f696273bd02a6275e273)
Diff | [Diff](https://github.com/dotnet/runtime/compare/13c03a4a9a854291f77636b1e15038e65919e68b...2515f972d25ec6ab5868f696273bd02a6275e273)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in PerfLabTests.DelegatePerf

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

• [MulticastDelegateCombineInvoke - 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 'PerfLabTests.DelegatePerf*'
```

### PerfLabTests.DelegatePerf.MulticastDelegateCombineInvoke

#### 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 DelegatePerf benchmark source at src/benchmarks/micro/runtime/perflab/DelegatePerf.cs#L61-L92 and the linked performance report for MulticastDelegateCombineInvoke. Read the benchmarking workflow documentation, then run the provided benchmarks_ci.py command to reproduce the result. Done should include a repeatable measurement and a runtime change or explanation accounting for it.

Written by the indexing model from the issue text.