Steven Wu cdd1ac91a8 [Caching] Support CrossImport modules for caching build ...

Add support for cross import modules by ingesting swiftoverlay files for
the cross import into CAS file system.

The long-term better fix will be just passing the cross import
information from scanner to swift-frontend so frontend doesn't need to
read overlay files again to figure out the cross import module.

rdar://123839248

2024-03-11 14:55:22 -07:00

9.2 KiB

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