[5.5] Frontend: teach -emit-module and -merge-modules to emit ABI descriptor files #39388
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@swift-ci please test |
airspeedswift
approved these changes
Sep 25, 2021
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Explanation: This change teaches the compiler to emit ABI descriptors as byproducts of emitting final modules. We could use these ABI descriptors to diagnose breakages between two revisions of the codebase.
Risk: Low
Reviewed by: @xymus
Testing: Automated tests added