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

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [13c03a4a9a854291f77636b1e15038e65919e68b](https://github.com/dotnet/runtime/commit/13c03a4a9a854291f77636b1e15038e65919e68b)
Compare | [c536338d89a6ccc0bcbca46e44e3343d990e06aa](https://github.com/dotnet/runtime/commit/c536338d89a6ccc0bcbca46e44e3343d990e06aa)
Diff | [Diff](https://github.com/dotnet/runtime/compare/13c03a4a9a854291f77636b1e15038e65919e68b...c536338d89a6ccc0bcbca46e44e3343d990e06aa)
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
py .\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 src/benchmarks/micro/runtime/perflab/DelegatePerf.cs lines 61-92 and reproduce PerfLabTests.DelegatePerf with the documented benchmarks_ci.py command. Compare the baseline and test commits using the linked performance report and disassembly data; done means determining whether the reported multicast-delegate improvement requires a runtime change or only triage.

Written by the indexing model from the issue text.