[PATCH] D50815: Establish the <bit> header

[Marshall Clow via Phabricator via cfe-commits]

mclow.lists created this revision.
mclow.lists added reviewers: EricWF, ldionne.
Herald added a subscriber: christof.

In C++20, we're going to have a header named <bit> for bit manipulations.
See https://wg21.link/P0553 and https://wg21.link/P0556 for more info.

This doesn't do any of that.
It just creates the header, and pulls some existing internal routines into it.
Later diffs will rename the existing routines, and implement the features from P0553 and P0556.

This is just moving stuff around.  NFC intended.


https://reviews.llvm.org/D50815

Files:
  include/algorithm
  include/bit
  include/module.modulemap
  test/libcxx/double_include.sh.cpp

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