[Perf] Windows/x64: 5 Improvements on 6/22/2026 2:16:39 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [06b80b7dccace56abf56e91e72ee26c2a682b76e](https://github.com/dotnet/runtime/commit/06b80b7dccace56abf56e91e72ee26c2a682b76e)
Compare | [fc23f447cfbddb07670e92dab98c794f0499d406](https://github.com/dotnet/runtime/commit/fc23f447cfbddb07670e92dab98c794f0499d406)
Diff | [Diff](https://github.com/dotnet/runtime/compare/06b80b7dccace56abf56e91e72ee26c2a682b76e...fc23f447cfbddb07670e92dab98c794f0499d406)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Numerics.Tests.Perf_BitOperations

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

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

| 361.32 ns | 278.67 ns | 0.77 | 0.10 | False | | |
|

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

| 361.57 ns | 279.22 ns | 0.77 | 0.10 | False | | |
|

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

| 360.73 ns | 279.21 ns | 0.77 | 0.11 | False | | |

![graph]()
![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 'System.Numerics.Tests.Perf_BitOperations*'
```

### System.Numerics.Tests.Perf_BitOperations.LeadingZeroCount_uint

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Numerics.Tests.Perf_BitOperations.PopCount_uint

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Numerics.Tests.Perf_BitOperations.TrailingZeroCount_uint

#### 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 | [3b1cc5f2cbbc27d5622c92be222aaeb9c4a819e6](https://github.com/dotnet/runtime/commit/3b1cc5f2cbbc27d5622c92be222aaeb9c4a819e6)
Compare | [2fb056790aea48d9d94e221309c506b2a2506849](https://github.com/dotnet/runtime/commit/2fb056790aea48d9d94e221309c506b2a2506849)
Diff | [Diff](https://github.com/dotnet/runtime/compare/3b1cc5f2cbbc27d5622c92be222aaeb9c4a819e6...2fb056790aea48d9d94e221309c506b2a2506849)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Threading.Tasks.ValueTaskPerfTest

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

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

| 15.14 ns | 10.72 ns | 0.71 | 0.48 | 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.Threading.Tasks.ValueTaskPerfTest*'
```

### System.Threading.Tasks.ValueTaskPerfTest.Await_FromResult

#### 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 | [3b1cc5f2cbbc27d5622c92be222aaeb9c4a819e6](https://github.com/dotnet/runtime/commit/3b1cc5f2cbbc27d5622c92be222aaeb9c4a819e6)
Compare | [fc23f447cfbddb07670e92dab98c794f0499d406](https://github.com/dotnet/runtime/commit/fc23f447cfbddb07670e92dab98c794f0499d406)
Diff | [Diff](https://github.com/dotnet/runtime/compare/3b1cc5f2cbbc27d5622c92be222aaeb9c4a819e6...fc23f447cfbddb07670e92dab98c794f0499d406)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Collections.Perf_Frozen<Int16>

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

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

| 14.75 μs | 13.42 μs | 0.91 | 0.38 | 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.Perf_Frozen*'
```

### System.Collections.Perf_Frozen<Int16>.ToFrozenDictionary(Count: 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 benchmark sources src/benchmarks/micro/libraries/System.Numerics.BitOperations/Perf_BitOperations.cs, System.Threading.Tasks.Extensions/Perf.ValueTask.cs, and System.Collections/Frozen/Perf_Frozen.cs, then run the benchmark commands in the issue. Review the linked reports and runtime commit diffs; the issue does not specify a code change or completion criterion.

Written by the indexing model from the issue text.