Selectively defering load instructions after encountering a store instruction with an unknown destination address during speculative execution

摘要

The described embodiments provide a system for executing instructions in a processor. While executing instructions in an execute-ahead mode, the processor encounters a store instruction for which a destination address is unknown. The processor then defers the store instruction. Upon encountering a load instruction while the store instruction with the unknown destination address is deferred, the processor determines if the load instruction is to continue executing. If not, the processor defers the load instruction. Otherwise, the processor continues executing the load instruction.