[Perf] Windows/x86: 1 Improvement on 7/2/2026 11:16:14 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x86
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [1bce750a172816951c2fa789e185bb722974703f](https://github.com/dotnet/runtime/commit/1bce750a172816951c2fa789e185bb722974703f)
Compare | [901aeddd1c55f5fc5a1c1450f234dd954c430ea5](https://github.com/dotnet/runtime/commit/901aeddd1c55f5fc5a1c1450f234dd954c430ea5)
Diff | [Diff](https://github.com/dotnet/runtime/compare/1bce750a172816951c2fa789e185bb722974703f...901aeddd1c55f5fc5a1c1450f234dd954c430ea5)
Configs | CompilationMode:tiered, RunKind:micro

### Improvements in System.Threading.Tests.Perf_Interlocked

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

• [Decrement_long - 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 'System.Threading.Tests.Perf_Interlocked*'
```

### System.Threading.Tests.Perf_Interlocked.Decrement_long

#### 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 linked benchmark source, src/benchmarks/micro/libraries/System.Threading/Perf.Interlocked.cs, and reproduce using the provided benchmarks_ci.py command. Compare the baseline and test results for System.Threading.Tests.Perf_Interlocked.Decrement_long on Windows x86, then determine and document what accounts for the reported improvement; the issue does not define a specific code change or completion test.

Written by the indexing model from the issue text.