[all-commits] [llvm/llvm-project] ddc627: [libc++] Simplify the implementation of __is_refer...

[Nikolas Klauser via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ddc62797c4fb30475bb2787101fc5b7acb641af9
      https://github.com/llvm/llvm-project/commit/ddc62797c4fb30475bb2787101fc5b7acb641af9
  Author: Nikolas Klauser <nikolasklauser at berlin.de>
  Date:   2025-03-24 (Mon, 24 Mar 2025)

  Changed paths:
    M libcxx/include/__type_traits/add_lvalue_reference.h
    M libcxx/include/__type_traits/add_pointer.h
    M libcxx/include/__type_traits/add_rvalue_reference.h
    M libcxx/include/__type_traits/decay.h
    M libcxx/include/__type_traits/is_referenceable.h
    A libcxx/test/libcxx/utilities/meta/is_referenceable.compile.pass.cpp
    R libcxx/test/libcxx/utilities/meta/is_referenceable.pass.cpp
    M libcxx/test/std/utilities/meta/meta.trans/objc_support.compile.pass.mm

  Log Message:
  -----------
  [libc++] Simplify the implementation of __is_referenceable (#130043)

The `__is_referenceable` builtin has been removed from Clang, since all
its uses have been replaced by builtins themselves. This trait only
exists for GCC compatibility and to word around some issues in the other
traits. The non-builtin implementation has been refactored to use
variable templates instead, making the implementation much simpler.



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