nemanjai added a comment. If I understand this correctly, this just evaluates the query for lock free atomics at compile time if the size is larger than the maximum possible size for an atomic on the target. If that's the case, this looks fine to me. But of course, some of the other target maintainers might feel otherwise. The incompatibility with GCC might be an issue for some, but I don't expect this to be an issue at least on PPC.
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