On 05/06/2016 02:53 PM, Richard Smith via cfe-commits wrote:
It looks like we added the noduplicate attribute to clang to support
OpenCL's barrier function. Did we get the semantics for it wrong for
its intended use case?
Yes. Noduplicate is essentially deprecated in favor of convergent.
noduplicate is too strict, duplicating is OK in the case of unrolling a
loop with a barrier for example.
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