[PATCH] D122922: [lld][common][lld-macho] Support per-thread allocators and StringSavers

[Vy Nguyen via Phabricator via llvm-commits]

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Details:
(near final draft)
Provide thread-safe StringSaver and bAlloc by assigning each thread its own StringSaver and allocator.
Usage: code that might be run in different threads should call the new perThreadSaver() or makeThreadSafe()
instead of the current util (saver() and make())

Some considerations:

- This might have some perf/memroy impact.
- TLS support might not be available on all archs. (Darwin?)

TODO: Run some benchmarks


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D122922

Files:
  lld/Common/CommonLinkerContext.cpp
  lld/Common/Memory.cpp
  lld/include/lld/Common/CommonLinkerContext.h
  lld/include/lld/Common/Memory.h

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