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dotnet / runtime

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.
https://docs.microsoft.com/dotnet/core/
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JIT: Unnecessarily large copies to resolve parameter/argument conflicts for tailcalls #105552

Open jakobbotsch opened 2 months ago

jakobbotsch commented 2 months ago

See the example code in #105551. We are introducing a full struct copy because the control expression accesses a parameter that will be overriden by placing a previous arg. However, we only need a single pointer sized copy to resolve the conflict.

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