[Perf] Linux/x64: 2 Regressions on 4/14/2026 5:24:29 PM +00:00

### Run Information

Name | Value
-- | --
Architecture | x64
OS | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [60815e7908757660418fb297313fecd4b8c080ac](https://github.com/dotnet/runtime/commit/60815e7908757660418fb297313fecd4b8c080ac)
Compare | [e697a301818934fb3153829e3c8cb22b462f15fc](https://github.com/dotnet/runtime/commit/e697a301818934fb3153829e3c8cb22b462f15fc)
Diff | [Diff](https://github.com/dotnet/runtime/compare/60815e7908757660418fb297313fecd4b8c080ac...e697a301818934fb3153829e3c8cb22b462f15fc)
Configs | CompilationMode:wasm, RunKind:micro

### Regressions in System.IO.Hashing.Tests.Crc64_AppendPerf

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

• [Append - Duration of single invocation]()
• [ADX - Test Multi Config Graph]()

| 120.26 ns | 166.33 ns | 1.38 | 0.21 | False | | |

[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.IO.Hashing.Tests.Crc64_AppendPerf*'
```

### System.IO.Hashing.Tests.Crc64_AppendPerf.Append(BufferSize: 16)

#### 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 | ubuntu 22.04
Queue | ViperUbuntu
Baseline | [60815e7908757660418fb297313fecd4b8c080ac](https://github.com/dotnet/runtime/commit/60815e7908757660418fb297313fecd4b8c080ac)
Compare | [e697a301818934fb3153829e3c8cb22b462f15fc](https://github.com/dotnet/runtime/commit/e697a301818934fb3153829e3c8cb22b462f15fc)
Diff | [Diff](https://github.com/dotnet/runtime/compare/60815e7908757660418fb297313fecd4b8c080ac...e697a301818934fb3153829e3c8cb22b462f15fc)
Configs | CompilationMode:wasm, RunKind:micro

### Regressions in System.IO.Hashing.Tests.Crc32_AppendPerf

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

• [Append - Duration of single invocation]()
• [ADX - Test Multi Config Graph]()

| 166.16 ns | 196.94 ns | 1.19 | 0.20 | False | | |

[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.IO.Hashing.Tests.Crc32_AppendPerf*'
```

### System.IO.Hashing.Tests.Crc32_AppendPerf.Append(BufferSize: 16)

#### 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)