[ParseableInterface] Add ‘forwarding modules’

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A ‘forwarding module’ is a YAML file that’s meant to stand in for a .swiftmodule file and provide an up-to-date description of its dependencies, always using modification times.

When a ‘prebuilt module’ is first loaded, we verify that it’s up-to-date by hashing all of its dependencies. Since this is orders of magnitude slower than reading mtimes, we’ll install a `forwarding module` containing the mtimes of the now-validated dependencies.

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Harlan Haskins

2019-02-13 17:36:55 -08:00

parent 67a447f15f

commit 366bbf48b9

17 changed files with 1315 additions and 703 deletions

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lib/Frontend/ParseableInterfaceModuleLoader.cpp Normal file

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