[Perf] Linux/x64: 3 Regressions on 3/2/2024 9:39:30 PM

[performanceautofiler[bot]]

Run Information

Name	Value
Architecture	x64
OS	ubuntu 22.04
Queue	TigerUbuntu
Baseline	70bb372b45a15eb1b6a81ad8444e0d60d8521b4b
Compare	37445d4964a50eeff87ca7ed8cbdf251b547b779
Diff	Diff
Configs	AOT:true, CompilationMode:wasm, RunKind:micro

Regressions in System.Memory.Constructors<String>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
<!-- [MemoryFromArrayStartLength - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_AOT=true_CompilationMode=wasm_RunKind=micro/System.Memory.Constructors(String).MemoryFromArrayStartLength.html>) ADX - Test Multi Config Graph	11.48 ns	13.98 ns	1.22	0.79	False

--> |

• [SpanFromMemory - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_AOT=true_CompilationMode=wasm_RunKind=micro/System.Memory.Constructors(String).SpanFromMemory.html>)
• ADX - Test Multi Config Graph

| 7.00 ns | 12.52 ns | 1.79 | 0.79 | False | | | |

• [ArrayAsMemoryStartLength - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 22.04_AOT=true_CompilationMode=wasm_RunKind=micro/System.Memory.Constructors(String).ArrayAsMemoryStartLength.html>)
• ADX - Test Multi Config Graph

| 14.53 ns | 19.94 ns | 1.37 | 0.78 | False | | | Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Memory.Constructors<String>*'

### System.Memory.Constructors<String>.MemoryFromArrayStartLength #### ETL Files #### Histogram #### JIT Disasms ### System.Memory.Constructors<String>.SpanFromMemory #### ETL Files #### Histogram #### JIT Disasms ### System.Memory.Constructors<String>.ArrayAsMemoryStartLength #### 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)