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
Interestingly, this turns single-instruction checks into two-instructions checks (at least with GCC, from one cmpb to a movl followed by a testl), but this is due to Atomic<bool> being actually backed by a uint32_t, not by the use of atomics. --HG-- extra : rebase_source : cfc0bec2113b44635120216b4abbbbbe9028b286