[PATCH] D126818: Itanium ABI: Implement mangling for constrained friends

[Erich Keane via Phabricator via cfe-commits]

erichkeane created this revision.
erichkeane added reviewers: rjmccall, clang-language-wg.
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Thanks to concepts, C++ can now have friends that differ by their
containing function.  Because of this, we need to differentiate ones
from different instantiations.  This patch implements itanium-cxx-abi
issue #24 (https://github.com/itanium-cxx-abi/cxx-abi/issues/24).

In addition to mangling the containing scope, this ALSO adds the 'F'
differentiator as proposed.


https://reviews.llvm.org/D126818

Files:
  clang/include/clang/AST/Decl.h
  clang/lib/AST/Decl.cpp
  clang/lib/AST/ItaniumMangle.cpp
  clang/test/CodeGenCXX/friend-concepts.cpp

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