[PATCH] D34918: [libc++] Avoid atomic built-ins for NO_THREADS build

[Weiming Zhao via Phabricator via llvm-commits]

weimingz created this revision.
Herald added a reviewer: EricWF.

On architectures without atomic instructions, the atomic built-ins cannot be lowered. If _LIBCPP_HAS_NO_THREADS is enabled, we should just use regular code.


Repository:
  rL LLVM

https://reviews.llvm.org/D34918

Files:
  include/__refstring
  src/locale.cpp
  src/support/runtime/exception_fallback.ipp
  src/support/runtime/new_handler_fallback.ipp

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