tree ea1b4fdc60cfd50c5799699ca7199a693031f92a
parent 5f2b21c3c9c3878ba50aebf4ae9b409b2b74c97c
author Zoe Carver <z.zoelec2@gmail.com> 1562357614 +0000
committer Zoe Carver <z.zoelec2@gmail.com> 1562357614 +0000

This patch makes swap functions constexpr. Both swap overloads, swap_ranges and iter_swap are updated (with tests).

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@365238 91177308-0d34-0410-b5e6-96231b3b80d8