[PATCH] D147449: [include-cleaner] Only ignore builtins without a header

[Kadir Cetinkaya via Phabricator via cfe-commits]

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Certain standard library functions (e.g. std::move) are also implemented
as builtins. This patch moves filtering logic to the symbol->header
mapping phase to rather generate these references without any providers
only when we don't have a mapping.
That way we can also map them to header names mentioned in the builtin
mappings.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D147449

Files:
  clang-tools-extra/include-cleaner/lib/FindHeaders.cpp
  clang-tools-extra/include-cleaner/lib/WalkAST.cpp
  clang-tools-extra/include-cleaner/unittests/AnalysisTest.cpp
  clang-tools-extra/include-cleaner/unittests/WalkASTTest.cpp

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