swift

1f395ec1 - Frontend: infer default blocklists to use when the explicit paths aren't given by swift-driver

Frontend: infer default blocklists to use when the explicit paths aren't given by swift-driver Although swift-driver always passes down these blocklist for the compiler to consume, some frontend tools, like ABI checker, are invoked by the build system directly. Therefore, we need to teach the compiler to infer these blocklist files like prebuilt module cache.