A method of compressing data for storage in cache memories in a hierarchy of cache memories

摘要

The electronic device includes at least one compression-decompression functional block and a hierarchy of cache memories having a first cache memory and a second cache memory. The at least one compression-decompression function block receives data in an uncompressed state, compresses the data using one of a first compression or a second compression, compresses the data, and then stores the data in a first cache for storage. provided in memory. When data is retrieved from the first cache memory for storage in the second cache memory, when the data is compressed using the first compression, the compression-decompression function block is configured to reverse the effects of the first compression on the data. Decompresses the data, thereby restoring the data to an uncompressed state and providing the data in a compressed or uncompressed state using a second compression to a second cache memory for storage.