[PATCH] D27429: [Chrono][Darwin] On Darwin use CLOCK_UPTIME_RAW instead of CLOCK_MONOTONIC

[Marshall Clow via Phabricator via cfe-commits]

mclow.lists added a comment.

I agree with @EricWF .   If `CLOCK_UPTIME_RAW` doesn't meet the requirements of `steady_clock`  (i.e, monotonically increasing, and advances in real time), then we can't use it.


https://reviews.llvm.org/D27429