[PATCH] D27564: [libcxx] Fix __compressed_pair so it doesn't copy the argument multiple times

[Eric Fiselier via Phabricator via cfe-commits]

EricWF created this revision.
EricWF added a reviewer: mclow.lists.
EricWF added subscribers: cfe-commits, loladiro.

__compressed_pair takes and passes it's constructor arguments by value. This causes arguments to be moved 3 times instead of once. This patch addresses that issue and fixes `constexpr` on the constructors.


https://reviews.llvm.org/D27564

Files:
  include/__hash_table
  include/memory
  include/string
  test/std/utilities/memory/unique.ptr/unique.ptr.runtime/unique.ptr.runtime.ctor/default01.fail.cpp

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