Matrix data scatter and gather between rows and irregularly spaced memory locations

A method comprising:

• decoding an instruction having a format including an opcode field to specify an opcode and a first operand field to specify a set of irregularly spaced memory locations by specifying a set of indices, the set of indices including at least one index having a reserved value;
• and
• executing the decoded instruction, wherein executing includes calculating a set of addresses corresponding to the set of irregularly spaced memory locations and transferring a set of rows of data between storage for a matrix and the set of irregularly spaced memory locations, wherein the reserved value is to indicate that a corresponding row is to be skipped or zeroed.

A non-transitory machine-readable medium containing instructions, when executed by a processor, to cause the processor to respond by:

• decoding an instruction having a format including an opcode field to specify an opcode and a first operand field to specify a set of irregularly spaced memory locations by specifying a set of indices, the set of indices including at least one index having a reserved value;
• and
• executing the decoded instruction, wherein executing includes calculating a set of addresses corresponding to the set of irregularly spaced memory locations and transferring a set of rows of data between storage for a matrix and the set of irregularly spaced memory locations, wherein the reserved value is to indicate that a corresponding row is to be skipped or zeroed.