[PATCH] D129030: [Driver] Ignore the clang modules validation-related flags if clang modules are not enabled

[Argyrios Kyrtzidis via Phabricator via cfe-commits]

akyrtzi created this revision.
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Herald added a project: clang.

If clang modules are not enabled it becomes unnecessary to read the session timestamp file in order
to pass `-fbuild-session-timestamp` to the `cc1` invocation.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D129030

Files:
  clang/lib/Driver/ToolChains/Clang.cpp
  clang/test/Driver/modules.m

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