aganea added a comment.

Thanks Reid! I will leave this open for a few days, in case there are any other 
feedbacks.

As for `-fthinlto-index`, we have someone looking at distributing it remotely 
with Fastbuild. I think it is reasonable on the short-term to let the build 
system handle that (I assume that's what you did). One adjacent question is how 
to address the size of the local cache folder (ie. `lto.cache` when compiling 
LLVM) which grows big very quickly. Pruning periodically is fine, but I wonder 
if we could keep it compressed on disk. Maybe do `DeviceIoControl 
(...FSCTL_SET_COMPRESSION..)` and let Windows handle that? I'll take a look in 
the weeks to come.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D75153/new/

https://reviews.llvm.org/D75153



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