[Perf] Linux/x64: 4 Regressions on 7/31/2026 3:52:37 AM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [974b4b56b05ffe12857f731320f4b235bf36169c](https://github.com/dotnet/runtime/commit/974b4b56b05ffe12857f731320f4b235bf36169c)
Compare | [896a3828ea34c1f7f2ccb06c7bf4325e8c07d0a1](https://github.com/dotnet/runtime/commit/896a3828ea34c1f7f2ccb06c7bf4325e8c07d0a1)
Diff | [Diff](https://github.com/dotnet/runtime/compare/974b4b56b05ffe12857f731320f4b235bf36169c...896a3828ea34c1f7f2ccb06c7bf4325e8c07d0a1)
Configs | CompilationMode:wasm, RunKind:micro

### Regressions in System.Numerics.Tests.Perf_VectorOf<Int32>

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

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

| 11.41 ns | 13.76 ns | 1.21 | 0.36 | False | | |
|

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

| 11.57 ns | 13.69 ns | 1.18 | 0.36 | False | | |
|

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

| 11.63 ns | 12.99 ns | 1.12 | 0.31 | False | | |
|

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

| 11.62 ns | 12.66 ns | 1.09 | 0.36 | False | | |

![graph]()
![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
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Numerics.Tests.Perf_VectorOf*'
```

### System.Numerics.Tests.Perf_VectorOf<Int32>.LessThanAnyBenchmark

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Numerics.Tests.Perf_VectorOf<Int32>.GreaterThanOrEqualAllBenchmark

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Numerics.Tests.Perf_VectorOf<Int32>.LessThanOrEqualAnyBenchmark

#### ETL Files

#### Histogram

#### JIT Disasms

### System.Numerics.Tests.Perf_VectorOf<Int32>.GreaterThanAllBenchmark

#### 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 four benchmark entries in dotnet/performance/src/benchmarks/micro/libraries/System.Numerics.Vectors/Perf_VectorOfT.cs and compare the listed baseline and compare commits. Reproduce with the provided benchmarks_ci.py command and inspect the linked test report; done means explaining and correcting the regression so the affected benchmarks no longer show the reported slowdown.

Written by the indexing model from the issue text.