Memory Disambiguation using Load Forwarding

memory disambiguation, load-forwarding, speculation The superscalar processor must issue instructions as early as possible for instruction-level parallelism. But load instructions would be issued with memory dependencies are known. Memory dependencies cannot be resolved prior to execution; therefore load instructions would be issued with prior store effective address calculated. This paper introduces the load forwarding history table (LFHT) for speculative executed load instructions by using load-forwarding behavior. This mechanism can be used to permit load instructions to be speculative executed without wait for prior store effective address calculated. The LFHT might provide about 7 % average speedup up over baseline architecture in our scheme