Priority-based storage and access of compressed memory lines in memory in a processor-based system

A memory device implementing a processing device for enabling storage and retrieval of compressed data, the memory device comprising:

• a first memory region, of a cache memory, configured to store a first higher priority compressed data, the first memory region being a first size;
• a second memory region, of the cache memory, configured to store a first lower priority compressed data, the second memory region being a second size;
• and
• a memory access device configured to:
• receive a read request;
• determine one of a higher priority or a lower priority of the read request;
• retrieve a first cache line comprised of the first memory region based on a determination of the higher priority and a logical memory address of the first cache line, wherein the logical memory address is used as a physical memory address of the first cache line;
• and
• retrieve the first lower priority compressed data from the second memory region based on a determination of the lower priority.

A method for retrieving compressed data, the method comprising:

• receiving a read request for compressed data, the read request having a logical memory address;
• determining a priority of the compressed data based on the read request;
• upon determining the priority of the compressed data is a higher priority, retrieving the compressed data from a first memory region of a first cache line indicated by the logical memory address such that the logical memory address of the first cache line is used as a physical memory address of the first cache line;
• upon determining the priority of the compressed data is a lower priority:
• retrieving a pointer indicating the physical memory address based on the logical memory address;
• retrieving the compressed data from a second memory region of the first cache line based on the physical memory address;
• and
• decompressing the compressed data.

A method for storing and retrieving data, the method comprising:

• storing a first portion of a higher priority compressed data in a first memory region of a first cache line of a cache memory such that a logical memory address of the first cache line is used as a physical memory address of the first cache line;
• storing a second portion of the higher priority compressed data in a second memory region of the first cache line;
• storing a first portion of a lower priority compressed data in a third memory region of the first cache line between the first memory region and the second memory region;
• and
• storing a second portion of the lower priority compressed data in a fourth memory region of a second cache line contiguous with the first cache line.