[PATCH] D128059: [Clang] Add a warning on invalid UTF-8 in comments.

[Corentin Jabot via Phabricator via cfe-commits]

cor3ntin updated this revision to Diff 439177.
cor3ntin added a comment.

- Add a comment referencing the (to be) C++ wording and unicode discussion on replacemet characters
- Do not try to skip utf8 checks when the warning is not enabled as checking whether the warning is enabled is more expensive
- Fix a bug causing vectorization to not be aligned


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D128059/new/

https://reviews.llvm.org/D128059

Files:
  clang/docs/ReleaseNotes.rst
  clang/include/clang/Basic/DiagnosticLexKinds.td
  clang/lib/Lex/Lexer.cpp
  clang/test/Lexer/comment-invalid-utf8.c
  llvm/include/llvm/Support/ConvertUTF.h
  llvm/lib/Support/ConvertUTF.cpp

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