I-cache line use history based done bit based on successful prefetchable counter

摘要

A method of providing history based done logic for a I-cache includes receiving an I-cache line in an L2 cache; determining if the I-cache line is unprefetchable; aging the I-cache line without a delay if the I-cache line is prefetchable; and aging the I-cache line with a delay is the I-cache line is unprefetchable.