thakis added inline comments.

================
Comment at: clang/lib/Sema/AnalysisBasedWarnings.cpp:1239
+              llvm::Regex("(/\\*[ \\t]*fall(s | |-)?thr(ough|u)\\.?[ 
\\t]*\\*/)"
+                          "|(//[ \\t]*fall(s | |-)?thr(ough|u)\\.?[ \\t]*)",
+                          llvm::Regex::IgnoreCase);
----------------
Also, this adds a regex match for every comment line, yes? Isn't this terrible 
for build performance? Did you do any benchmarking of this?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D73852/new/

https://reviews.llvm.org/D73852



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