Because transfer 2 only USES a fence and transfer 3 doesn't specify any ordering at all, transfer 3 is free to float anywhere before the barrier (transfer 4).
由于传输2只使用了一个fence,而传输3根本就没有指定任何次序,因此传输3可以在barrier(传输4)之前的任何地方执行。
Because transfer 2 only USES a fence and transfer 3 doesn't specify any ordering at all, transfer 3 is free to float anywhere before the barrier (transfer 4).
由于传输2只使用了一个fence,而传输3根本就没有指定任何次序,因此传输3可以在barrier(传输4)之前的任何地方执行。
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