[PATCH] D13051: Add placeholder __libcpp_relaxed_store() for when atomic builtins are not available.

[Jonathan Roelofs via cfe-commits]

jroelofs added a comment.

In http://reviews.llvm.org/D13051#250836, @EricWF wrote:

> Does armv4 need lib calls for atomic operations on "unsigned long"?


IIRC, yes.


http://reviews.llvm.org/D13051