llvm

952a540b - [test] On Mac, don't try to use result of sysctl command if calling it failed.

[test] On Mac, don't try to use result of sysctl command if calling it failed. If sysctl is not found at all, let the usual exception propogate so that the user can fix their env. If it fails because of the permissions required to read the property then print a warning and continue. Differential Revision: https://reviews.llvm.org/D72278