[PATCH] D98477: [ADT] Add IntrusiveVariant

[Scott Linder via Phabricator via llvm-commits]

scott.linder created this revision.
Herald added subscribers: dexonsmith, mgorny.
scott.linder requested review of this revision.
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Herald added a subscriber: llvm-commits.

Add a compact, restricted version of the C++17 std::variant called
IntrusiveVariant. IntrusiveVariant stores the dynamic tag at
the beginning of every alternative type object, allowing for
more efficient packing in some cases.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D98477

Files:
  llvm/include/llvm/ADT/IntrusiveVariant.h
  llvm/include/llvm/ADT/STLExtras.h
  llvm/unittests/ADT/CMakeLists.txt
  llvm/unittests/ADT/IntrusiveVariantTest.cpp

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