[PATCH] D93000: [lld-macho] Implement `-no_implicit_dylibs`

[Jez Ng via Phabricator via llvm-commits]

int3 created this revision.
int3 added reviewers: lld-macho, thakis.
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Dylibs that are "public" -- i.e. top-level system libraries -- are considered
implicitly linked when another library re-exports them. That is, we should load
them & bind directly to their symbols instead of via their re-exporting
umbrella library. This diff implements that behavior by default, as well as an
opt-out flag.

In theory, this is just a performance optimization, but in practice it seems
that it's needed for correctness.

Will likely fix llvm.org/PR48395.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D93000

Files:
  lld/MachO/Config.h
  lld/MachO/Driver.cpp
  lld/MachO/InputFiles.cpp
  lld/MachO/Options.td
  lld/test/MachO/implicit-dylibs.s
  lld/test/MachO/reexport-stub.s
  lld/test/MachO/stub-link.s

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