[Perf] Windows/x64: 2 Regressions on 4/18/2026 7:08:15 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [dbd3e33df9ccf74b91045e095477726c2bf83916](https://github.com/dotnet/runtime/commit/dbd3e33df9ccf74b91045e095477726c2bf83916)
Compare | [b3753182ea941245f8f755b1a16a68b32a76e9b5](https://github.com/dotnet/runtime/commit/b3753182ea941245f8f755b1a16a68b32a76e9b5)
Diff | [Diff](https://github.com/dotnet/runtime/compare/dbd3e33df9ccf74b91045e095477726c2bf83916...b3753182ea941245f8f755b1a16a68b32a76e9b5)
Configs | CompilationMode:tiered, RunKind:micro

### Regressions in System.MathBenchmarks.Double

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

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

| 21.04 μs | 22.34 μs | 1.06 | 0.13 | False | | |

![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 'System.MathBenchmarks.Double*'
```

### System.MathBenchmarks.Double.Sin

#### 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 | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [dbd3e33df9ccf74b91045e095477726c2bf83916](https://github.com/dotnet/runtime/commit/dbd3e33df9ccf74b91045e095477726c2bf83916)
Compare | [b3753182ea941245f8f755b1a16a68b32a76e9b5](https://github.com/dotnet/runtime/commit/b3753182ea941245f8f755b1a16a68b32a76e9b5)
Diff | [Diff](https://github.com/dotnet/runtime/compare/dbd3e33df9ccf74b91045e095477726c2bf83916...b3753182ea941245f8f755b1a16a68b32a76e9b5)
Configs | CompilationMode:tiered, RunKind:micro

### Regressions in System.Collections.CtorFromCollectionNonGeneric<String>

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

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

| 3.87 μs | 5.36 μs | 1.39 | 0.06 | False | | |

![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 'System.Collections.CtorFromCollectionNonGeneric*'
```

### System.Collections.CtorFromCollectionNonGeneric<String>.Queue(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)