[lld] [lld][MachO]Multi-threaded i/o. Twice as fast linking a large project. (PR #147134)

[John Holdsworth via llvm-commits]

johnno1962 wrote:

I've updated the second occurrence of --read-workers I missed in the "initial post". The numbers are still relevant, they haven't changed significantly since Jul 6th.

https://github.com/llvm/llvm-project/pull/147134