[PATCH] D75425: [docs] Added solutions to slow build under common problems

[Kókai Péter via Phabricator via llvm-commits]

Kokan added a comment.

> Anything like this without an LLD/Gold reference is likely insufficient. In my experience, switching to Gold or LLD has been the biggest benefit so far.

I did some testing comparing `-DLLVM_PARALLEL_LINK_JOBS`  and `-DLLVM_USE_LINKER=lld` on linux. (for parallel link using different number of values).
Based on that I would also say that if you have `lld` the parallel linking is insignificant[1].

On the other hand I would limit the list of "tips" here. (As too much option could cause users not to read it; I've been there). Mostly at 1-3 option I would stop, and possible there could be a different section listing all of the other options.
The first in the list should be `LLVM_USE_LINKER` imho (which I do not write as an llvm veteran which I am not)

[1] https://reviews.llvm.org/D72402 Note: this is no an advertisement of that patch, which is kinda rotten because of me, just to reference some data in the description.


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  https://reviews.llvm.org/D75425/new/

https://reviews.llvm.org/D75425