[libc] [lld] [clang] [libcxx] [lldb] [mlir] [clang-tools-extra] [libcxxabi] [flang] [llvm] [openmp] [compiler-rt] [llvm] Support IFuncs on Darwin platforms (PR #73686)

[Ahmed Bougacha via cfe-commits]

https://github.com/ahmedbougacha commented:

Only a couple minor comments, LG otherwise, thanks!  The Subtarget weirdness is unfortunate but I can't say I have a better alternative

https://github.com/llvm/llvm-project/pull/73686