[CMake] '-no-emit-module-separately-wmo' for swift modules #3012
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Emitting modules in separate frontend job doesn't give any benefits because single add_library is just a single job from CMake's point of view. Clients need to wait for `.dylib`/`.so` being emitted before using the `.swiftmodule`. *Not* emitting modules separately is actually faster in CMake because it doesn't parse and typecheck the source code twice.
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@swift-ci Please test |
xymus
approved these changes
Mar 11, 2025
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@swift-ci Please test Windows |
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Emitting modules in separate frontend job doesn't give any benefits because single add_library is just a single job from CMake's point of view. Clients need to wait for
.dylib/.sobeing emitted before using the.swiftmodule. Not emitting modules separately is actually faster in CMake because it doesn't parse and typecheck the source code twice.