[PATCH] D138451: [lld/mac] Add support distributed thinlto

[Nico Weber via Phabricator via llvm-commits]

thakis created this revision.
thakis added a reviewer: lld-macho.
Herald added subscribers: ormris, arphaman, steven_wu, hiraditya, inglorion, emaste.
Herald added projects: lld-macho, All.
thakis requested review of this revision.
Herald added subscribers: alextsao1999, MaskRay.

Adds support for the following flags:

- thinlto-index-only, thinlto-index-only=
- thinlto-emit-imports-files
- thinlto-emit-index-files
- thinlto-object-suffix-replace=
- thinlto-prefix-replace=

See https://blog.llvm.org/2016/06/thinlto-scalable-and-incremental-lto.html
for some words on -thinlto-index-only.

I don't really need the other flags, but they were in the vicinity
and _someone_ might need them, so I figured I'd add them too.


https://reviews.llvm.org/D138451

Files:
  lld/MachO/Config.h
  lld/MachO/Driver.cpp
  lld/MachO/InputFiles.cpp
  lld/MachO/InputFiles.h
  lld/MachO/LTO.cpp
  lld/MachO/LTO.h
  lld/MachO/Options.td
  lld/test/ELF/lto/thinlto-obj-path.ll
  lld/test/MachO/thinlto-emit-imports.ll
  lld/test/MachO/thinlto-emit-index.ll
  lld/test/MachO/thinlto-index-file.ll
  lld/test/MachO/thinlto-index-only.ll
  lld/test/MachO/thinlto-no-index.ll
  lld/test/MachO/thinlto-object-suffix-replace.ll
  lld/test/MachO/thinlto-prefix-replace.ll

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