HomePhabricator

[libc++] Re-enable macOS back-deployment testing

Authored by ldionne on Mar 25 2021, 11:14 AM.

Description

[libc++] Re-enable macOS back-deployment testing

Download older roots from Dropbox instead of Green Dragon, which is too
unreliable. Also XFAIL tests that were broken for back-deployment
configurations by D98097.

Differential Revision: https://reviews.llvm.org/D99359