jroelofs added a comment. In http://reviews.llvm.org/D13051#250910, @EricWF wrote:
> @jroelofs @dim, could we fallback to the __sync_* builtins on arm? @dim would need armv4-flavored implementations of them in compiler-rt (if that's what he's using)... the existing ones use instructions that v4 doesn't have. Implementation-wise, they'd have to use `__kuser_cmpxchg`. See: https://www.kernel.org/doc/Documentation/arm/kernel_user_helpers.txt http://reviews.llvm.org/D13051 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
