[PATCH] D120026: [ARM] Fix ARM backend to correctly use atomic expansion routines.

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

The impact on Cortex-M0 is that instead of using `__sync_*`, and inlined atomic load/store ops, it uses `__atomic_*` calls.  I can't imagine that causing timeouts unless you're somehow using a bad implementation of `__atomic_*`.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D120026/new/

https://reviews.llvm.org/D120026