[Embedded] Introduce DeferredCodeGen feature. #84095
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Introduce an experimental feature DeferredCodeGen, that defers the generation of LLVM IR (and therefore object code) for all entities within an Embedded Swift module unless they have explicitly requested to not be emitted into the client (e.g., with `@_neverEmitIntoClient`). This feature is meant to generalize and subsume -emit-empty-object-file, relying on lazy emission of entities rather than abruptly ending the compilation pipeline before emitting any IR. Part of rdar://158363967.
DougGregor
requested review from
artemcm,
hborla,
jckarter,
slavapestov,
tshortli,
xedin and
xymus
as code owners
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@swift-ci please test |
This ensures that one can use deferred code generation everywhere with Embedded Swift and still get the appropriate entry symbol emitted.
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@swift-ci please test |
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Introduce an experimental feature DeferredCodeGen, that defers the generation of LLVM IR (and therefore object code) for all entities within an Embedded Swift module unless they have explicitly requested to not be emitted into the client (e.g., with
@_neverEmitIntoClient).This feature is meant to generalize and subsume
-emit-empty-object-file, relying on lazy emission of entities rather than abruptly ending the compilation pipeline before emitting any IR.Part of rdar://158363967.