Hello,

A colleague of mine who's doing performance testing with some server-side Swift frameworks like Kitura, Perfect and Zewo found a 15-20% degradation with a simple "Hello World" benchmark, with the 3.0.1 previews on Linux. Analysis revealed it is related to the disabling of an optimisation around String comparison for Swift runtimes - this commit - apple/swift@ef974af

Do we have a plan to reimplement this optimisation for Swift runtimes in the future? Any more information about this would be highly appreciated. 

Thank you!

Pushkar N Kulkarni,
IBM Runtimes

Simplicity is prerequisite for reliability - Edsger W. Dijkstra


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