[cfe-dev] [libcxx] atomic header and low-level intrinsics

[Al Grant]

David Chisnall writes:
> Clang already implements the intrinsics.

Does it implement the GCC intrinsics?  I can't see __atomic_load_n.  And only
two-argument __atomic_load is tested, not GCC's three-argument version.

The two intrinsics sets are not the same, though they are very similar.
So libcxx <atomic> only works with clang and not with GCC.  If libcxx and clang
changed to use and implement the GCC intrinsics, then libcxx would work with GCC.

Al



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