Skip deep copy of maps/vecs if they're empty or uncounted
commit9343012fdc208d470e891ed072b01dd0985d0660
authorMadelaine Boyd <madelaine@fb.com>
Mon, 24 Apr 2017 20:12:34 +0000 (24 13:12 -0700)
committerHhvm Bot <hhvm-bot@users.noreply.github.com>
Tue, 25 Apr 2017 00:23:36 +0000 (24 17:23 -0700)
tree514e23bec1deb8667a47719d4733d5ffe1e22a5e
parentb3dc17e4acd722d1002a8a300ec5438abae425a7
Skip deep copy of maps/vecs if they're empty or uncounted

Summary: ...

Reviewed By: markw65

Differential Revision: D4915483

fbshipit-source-id: 1eed19fe2a3bf37aca4e86cca6568706db13d0ac
hphp/runtime/base/collections.cpp