[Diffusion] rL244063: Add missing atomic libcall support.

[James Y Knight via cfe-commits]

jyknight added inline comments.

/cfe/trunk/lib/CodeGen/CGAtomic.cpp:941-943 Looks like GCC's behavior does actually follow that spec.

I'm not sure why the library exposes these entry-points when you're not supposed to use them. Oop. Sorry that I failed to notice that.

Users:
  jyknight (Author, Auditor)
  3.7-release (Auditor)
  cfe-commits (Auditor)
  tstellarAMD (Auditor)
  compnerd (Auditor)
  majnemer (Auditor)
  rsmith (Auditor)

http://reviews.llvm.org/rL244063