Convert JIT/Performance to a merged test group#85851

Merged

markples merged 6 commits intodotnet:mainfrom markples:JIT/Performance

May 12, 2023

+502-432

Commits on Apr 26, 2023

Manual removal of C# Main args
markples
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Commits on Apr 28, 2023

[ILTransform -prociso] Set RequiresProcessIsolation when needed by other properties
markples
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Commits on Apr 29, 2023

[ILTransform -public] Make test entrypoints accessible
markples
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[ILTransform -ilfact] Main->TestEntryPoint, [Fact], remove OutputType=Exe
markples
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Manual fixes for xUnit1013 - internal methods, disable for region
markples
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Commits on May 5, 2023

Add merged group
markples
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