[PATCH] D146712: [clang-tidy] Add portability-non-portable-integer-constant check

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This check finds integer literals that are being used in a non-portable manner.

Currently, the check detects cases where maximum or minimum values should be used
instead, as well as error-prone integer literals having leading zeroes, or
relying on most significant bits.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D146712

Files:
  clang-tools-extra/clang-tidy/cert/CERTTidyModule.cpp
  clang-tools-extra/clang-tidy/cert/CMakeLists.txt
  clang-tools-extra/clang-tidy/portability/CMakeLists.txt
  clang-tools-extra/clang-tidy/portability/NonPortableIntegerConstantCheck.cpp
  clang-tools-extra/clang-tidy/portability/NonPortableIntegerConstantCheck.h
  clang-tools-extra/clang-tidy/portability/PortabilityTidyModule.cpp
  clang-tools-extra/docs/ReleaseNotes.rst
  clang-tools-extra/docs/clang-tidy/checks/cert/int17-c.rst
  clang-tools-extra/docs/clang-tidy/checks/list.rst
  clang-tools-extra/docs/clang-tidy/checks/portability/non-portable-integer-constant.rst
  clang-tools-extra/test/clang-tidy/checkers/portability/non-portable-integer-constant.cpp

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