Selective Fill Data Cache

Abstract – Here we present an architecture for improving data cache miss rate. Our enhancement seeks to capture greater temporal locality than a standard cache by more efficiently using the area available. Frequently used data ought to remain in the cache, while infrequently used data ought not to be admitted into the cache. Policing entry into the cache leaves more room for useful data. The Selective Fill Data Cache prevents rarely used data from entering the cache. The Cache Fill Policy keeps record of data blocks that exhibit little temporal locality. These data blocks must bypass the L1 cache before reaching the CPU. It is in the bypass path where we cache these values in a bypass buffer in order to decrease the penalty for mis-predictions