[PATCH] D25784: [Support] ThreadPool: Don't spawn any threads when ThreadCount = 1

[Mehdi AMINI via llvm-commits]

mehdi_amini added a comment.

That seems fine and makes sense to me from an API point of view.
I'm not sure how to translate this to the user though: I don't expect someone to run `-threads=0`. And we're back to special casing in the client: `ThreadPool Pool(ThreadCount == 1 ? 0 : ThreadCount);` which isn't great either.


https://reviews.llvm.org/D25784