[pull] swiftwasm-release/5.5 from release/5.5 #3777
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Asynchronous functions isolated to global actors hop to the global at the beginning of the function but do not hop back on return. For `MainActor.run`, this means that we would not "hop back" off the main actor after executing the closure, which lead to too much code running on the main thread. Dropping the "async" ensures that we hop back. While we my also want the general "hop back" semantics for asynchronous actor-isolated functions, for now this addresses the problem with `MainActor.run`. Fixes rdar://82138050.
MaxDesiatov
approved these changes
Oct 23, 2021
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