Xi Ge 84dd4db0b1 Dependencies Scanner: report compiled Swift module paths if they are available ...

For the explicit module mode, swift-driver uses -compile-module-from-interface to
generate modules from interfaces found by the dependency scanner. However, we don't
need to build the binary module if up-to-date modules are available, either adjacent
to the interface file or in the prebuilt module cache directory. This patch teaches
dependencies scanner to report these ready-to-use binary modules.

2020-07-01 11:54:15 -07:00

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