Add -index-ignore-pcms to prevent indexing PCMs for imports/deps
#4790
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This is the clang equivalent of swiftlang/swift#58932, to be used when building explicit clang modules for Swift to prevent repeated indexing of the same Clang PCM during remote builds. With this, the build system can index the Clang PCM when it is created and there's no need to ever index it again. (cherry picked from commit 2a822a6)
bnbarham
approved these changes
Jun 2, 2022
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This is the clang equivalent of
swiftlang/swift#58932, to be used when building
explicit clang modules for Swift to prevent repeated indexing of the
same Clang PCM during remote builds. With this, the build system
can index the Clang PCM when it is created and there's no need to
ever index it again.
(cherry picked from commit 2a822a6/#4779)