[PATCH] D25659: [clang-tidy] Avoid running aliased checks twice

[Malcolm Parsons via cfe-commits]

malcolm.parsons created this revision.
malcolm.parsons added reviewers: aaron.ballman, klimek, alexfh.
malcolm.parsons added a subscriber: cfe-commits.
Herald added a subscriber: nemanjai.

It is easy to configure clang-tidy with both aliased and original
checks enabled.  This causes the check to be appear under both names
in -list-checks and -dump-config, and the check is run twice.

This changeset tells the CheckFactory about aliases so that an alias
is only enabled when the original is not enabled.


https://reviews.llvm.org/D25659

Files:
  clang-tidy/ClangTidy.cpp
  clang-tidy/ClangTidyModule.cpp
  clang-tidy/ClangTidyModule.h
  clang-tidy/cert/CERTTidyModule.cpp
  clang-tidy/cppcoreguidelines/CppCoreGuidelinesTidyModule.cpp
  clang-tidy/google/GoogleTidyModule.cpp

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