Comment # 19 on bug 1028575 from Mircea Kitsune

(In reply to kevin Zhu from comment #18)

I'm sorry to hear that you're also dealing with this, but glad to know I'm not
alone here. Still waiting for LLVM 4.0 myself, but so far it hasn't been pulled
from Devel into Factory and is therefore not planned for Tumbleweed in the
foreseeable future.

Not much has changed on my end otherwise: I actually managed to get 3 days of
uptime, then last night it happened again. I think updates to various packages
slightly change the frequency of the freeze, whereas the issue itself has never
been fixed since my report.