thakis marked an inline comment as done.
thakis added inline comments.

================
Comment at: clang/lib/Frontend/CompilerInvocation.cpp:3645
   // CityHash, but this will do for now.
   hash_code code = hash_value(getClangFullRepositoryVersion());
 
----------------
Arguably, we should omit the full repo version from the hash: There's no reason 
to use a new cache dir just because someone fixed a typo in the (say) mlir 
docs. We'd also be better about remembering to bump 
clang::serialization::VERSION_MAJOR/MINOR in that case.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D73202/new/

https://reviews.llvm.org/D73202



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