[Perf] Windows/x86: 3 Improvements on 3/6/2026 5:25:07 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x86
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [8b63bd26190fe970d9d0643f552a27a42cb8e9a2](https://github.com/dotnet/runtime/commit/8b63bd26190fe970d9d0643f552a27a42cb8e9a2)
Compare | [703be0833b619fab3b970175f0d391c097d1e17b](https://github.com/dotnet/runtime/commit/703be0833b619fab3b970175f0d391c097d1e17b)
Diff | [Diff](https://github.com/dotnet/runtime/compare/8b63bd26190fe970d9d0643f552a27a42cb8e9a2...703be0833b619fab3b970175f0d391c097d1e17b)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in PerfLabTests.LowLevelPerf

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

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

| 189.32 μs | 162.26 μs | 0.86 | 0.18 | False | | |
|

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

| 163.99 μs | 135.49 μs | 0.83 | 0.20 | 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'PerfLabTests.LowLevelPerf*'
```

### PerfLabTests.LowLevelPerf.InstanceDelegate

#### ETL Files

#### Histogram

#### JIT Disasms

### PerfLabTests.LowLevelPerf.ClassVirtualMethod

#### 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)

---

### Run Information

Name | Value
-- | --
Architecture | x86
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [8b63bd26190fe970d9d0643f552a27a42cb8e9a2](https://github.com/dotnet/runtime/commit/8b63bd26190fe970d9d0643f552a27a42cb8e9a2)
Compare | [703be0833b619fab3b970175f0d391c097d1e17b](https://github.com/dotnet/runtime/commit/703be0833b619fab3b970175f0d391c097d1e17b)
Diff | [Diff](https://github.com/dotnet/runtime/compare/8b63bd26190fe970d9d0643f552a27a42cb8e9a2...703be0833b619fab3b970175f0d391c097d1e17b)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in PerfLabTests.CastingPerf2.CastingPerf

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

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

| 638.23 μs | 600.50 μs | 0.94 | 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
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'PerfLabTests.CastingPerf2.CastingPerf*'
```

### PerfLabTests.CastingPerf2.CastingPerf.ObjObjrefValueType

#### 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)