Fix broken implicit import conditional rename. #37857
Merged
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In #37686
SWIFT_IMPLICIT_CONCURRENCY_IMPORT
was introduced alongsidethe existing
SWIFT_ENABLE_EXPERIMENTAL_CONCURRENCY
, but the#cmakedefine
for this preprocessor symbol was renamed to the formerinstead of a new
#cmakedefine
being introduced.This means the
#ifdef
conditional referred in this commit was broken.Instead of just introducing the old symbol back again, let's rename it
as it probably was intended here.
However, the semantics of this symbol is slightly different: this now
requires prospective builders to explicitly turn this off on platforms
where Dispatch is unavailable. To address this, the docs are updated to
match. Caveat: I have not ran the procedure in the doc recently, but
this hopefully should suffice to guide the reader until I get around to
doing so.