Analog Devices ADSP-BF53x Blackfin Reference page 611

External Event Management
Further, it usually allows loads to access memory speculatively. The core
may later cancel or restart speculative loads. By using the Core Synchro-
nize or System Synchronize instructions and managing interrupts
appropriately, you can restrict out-of-order and speculative behavior.
Stores never access memory speculatively.
ADSP-BF53x/BF56x Blackfin Processor Programming Reference 16-7