Patent attributes
Apparatuses and methods of manufacturing same, systems, and methods for a spatial memory streaming (SMS) prefetch engine are described. In one aspect, the SMS prefetch engine includes a pattern history table (PHT), which has a table in which each entry has an offset list field comprising sub-fields for offset values from a base offset value within a region and a per-offset confidence field comprising sub-fields for per-offset confidence levels corresponding to each offset value. When a PHT entry is activated, the per-offset confidence values corresponding to each offset value in the offset list field of the PHT entry are updated by matching current accesses to the stored offset values in the offset list field of the activated PHT entry. Continuous learning may be provided to the SMS engine at least by the per-offset confidence levels.
