[PATCH] D39064: implement __has_unique_object_representations

[Erich Keane via Phabricator via cfe-commits]

erichkeane created this revision.

A helper builtin to facilitate implementing the
std::has_unique_object_representations type trait.

Requested here: https://bugs.llvm.org/show_bug.cgi?id=34942
Also already exists in GCC and MSVC.


https://reviews.llvm.org/D39064

Files:
  include/clang/AST/Type.h
  include/clang/Basic/TokenKinds.def
  include/clang/Basic/TypeTraits.h
  lib/AST/Type.cpp
  lib/Parse/ParseExpr.cpp
  lib/Sema/SemaExprCXX.cpp
  test/SemaCXX/type-traits.cpp

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