[all-commits] [llvm/llvm-project] 1ec02e: [libc++] Make rotate a constexpr.

[Zoe Carver via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 1ec02efee9b1d01cde89f31ca9ba6a46b7662ac5
      https://github.com/llvm/llvm-project/commit/1ec02efee9b1d01cde89f31ca9ba6a46b7662ac5
  Author: zoecarver <z.zoelec2 at gmail.com>
  Date:   2020-09-14 (Mon, 14 Sep 2020)

  Changed paths:
    M libcxx/include/algorithm
    M libcxx/include/iterator
    M libcxx/test/std/algorithms/alg.modifying.operations/alg.move/move.pass.cpp
    M libcxx/test/std/algorithms/alg.modifying.operations/alg.move/move_backward.pass.cpp
    M libcxx/test/std/algorithms/alg.modifying.operations/alg.rotate/rotate.pass.cpp
    M libcxx/www/cxx2a_status.html

  Log Message:
  -----------
  [libc++] Make rotate a constexpr.

This patch makes `std::rotate` a constexpr. In doing so, this patch also
updates the internal `__move` and `__move_backward` funtions to be
constexpr.

Reviewed By: ldionne

Differential Revision: https://reviews.llvm.org/D65721