[PATCH] D109945: [lld-macho] Simplify the handling of "no unwind info" functions

[Jez Ng via Phabricator via llvm-commits]

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This diff does away with `addEntriesForFunctionsWithoutUnwindInfo()`,
because `addSymbol()` can now determine which functions need those
entries.

While overhauling UnwindInfoSection, I also parallelized the relocation
of the contents of the CUEs. This somewhat offsets the time regression
from creating one InputSection per CUE (which was done in D109944 <https://reviews.llvm.org/D109944>).


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D109945

Files:
  lld/MachO/UnwindInfoSection.cpp
  lld/MachO/UnwindInfoSection.h
  lld/MachO/Writer.cpp

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