[lld] [llvm] [lld][MachO] Follow-up to use madvise() for threaded file page-in. (PR #157917)

[John Holdsworth via llvm-commits]

johnno1962 wrote:

@drodriguez I wondered about .tbd files. Basically, the new code in the commit I mention, prevents most input files from using mmap() to solve an obscure clang problem on Linux. I'm open to suggestions about what to do about this.

https://github.com/llvm/llvm-project/pull/157917