[Perf] Windows/x64: 2 Regressions on 7/3/2026 9:02:11 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | Windows 10.0.22631
Queue | ViperWindows
Baseline | [4895d1315f4855111e88c88c726c4f2aca4c6adf](https://github.com/dotnet/sdk/commit/4895d1315f4855111e88c88c726c4f2aca4c6adf)
Compare | [bcaa8d44d57494224d443dba7c1dfed381ad5528](https://github.com/dotnet/sdk/commit/bcaa8d44d57494224d443dba7c1dfed381ad5528)
Diff | [Diff](https://github.com/dotnet/sdk/compare/4895d1315f4855111e88c88c726c4f2aca4c6adf...bcaa8d44d57494224d443dba7c1dfed381ad5528)
Configs | CompilationMode:tiered, RunKind:akadeindexedset

### Regressions in Akade.IndexedSet.Benchmarks.UniqueIndexBenchmarks

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

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

| 916.94 ns | 1224.30 ns | 1.34 | 0.00 | True | | |
|

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

| 1.16 μs | 1.30 μs | 1.12 | 0.00 | True | | |

![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 'Akade.IndexedSet.Benchmarks.UniqueIndexBenchmarks*'
```

### Akade.IndexedSet.Benchmarks.UniqueIndexBenchmarks.Unique_IndexedSet_Single

#### ETL Files

#### Histogram

#### JIT Disasms

### Akade.IndexedSet.Benchmarks.UniqueIndexBenchmarks.Unique_IndexedSet_PrimaryKey

#### 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/real-world/Akade.IndexedSet.Benchmarks/UniqueLookupBenchmarks.cs at the referenced benchmark ranges, then reproduce with scripts/benchmarks_ci.py using the supplied filter. Compare the two Windows/x64 results with the linked baseline and regression reports. Done means the cause is identified and the affected benchmarks no longer show the reported regression.

Written by the indexing model from the issue text.