[Concurrency] Add Builtin.createAsyncTaskFuture and implement runDetached on it #34759
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This new builtin allows the creation of a "future" task, which calls down to swift_task_create_future to actually form the task.
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@swift-ci please test |
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Add support for a new builtin
Builtin.createAsyncTaskFuture, which allows us to form a call toswift_task_create_future[_f]to create a new task future. Use this to implement incompleteforms of two key operations:
Task.runDetachedto launch a new task (it just executes the task directly)Task.Handle.getto retrieve the result of a future (but crashes if the future didn't finish yet).