[PATCH] D91311: Add new 'preferred_name' attribute.

[Richard Smith - zygoloid via Phabricator via cfe-commits]

rsmith created this revision.
rsmith added reviewers: aaron.ballman, EricWF.
Herald added a subscriber: jdoerfert.
Herald added projects: clang, libc++.
Herald added a reviewer: libc++.
rsmith requested review of this revision.

This attribute permits a typedef to be associated with a class template
specialization as a preferred way of naming that class template
specialization. This permits us to specify that (for example) the
preferred way to express 'std::basic_string<char>' is as 'std::string'.

The attribute is applied to the various class templates in libc++ that have
corresponding well-known typedef names.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D91311

Files:
  clang/include/clang/Basic/Attr.td
  clang/include/clang/Basic/AttrDocs.td
  clang/include/clang/Basic/DiagnosticSemaKinds.td
  clang/lib/AST/TypePrinter.cpp
  clang/lib/Sema/SemaDeclAttr.cpp
  clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
  clang/test/SemaTemplate/attributes.cpp
  libcxx/include/__config
  libcxx/include/iosfwd
  libcxx/include/string
  libcxx/include/string_view

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