Ben Langmuir 576cc8cee1 [Caching] Use clang to prefix-map -fmodule-file-cache-key paths ...

When prefix mapping paths that are used in clang, ensure we are
consistently using the same prefix mapper from clang. This prevents
mismatches that could cause modules to fail to load.

rdar://123324072

2024-02-28 13:44:28 -08:00

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