Gathering payload from arbitrary registers for send messages in a graphics environment

A method comprising:

• receiving, by execution circuitry of a graphics processor, a send gather message instruction identifying a number of registers to access for a send message and identifying IDs of a plurality of individual registers corresponding to the number of registers, wherein the send gather message comprises a first phase and a second phase;
• performing a move of the IDs of the plurality of individual registers to an architectural register of a processing resource comprising the execution circuitry;
• including a pointer to the architectural register in the send gather message instruction;
• and
• dispatching the send gather message instruction to a send pipeline of the execution circuitry.

A system comprising:

• a memory to store a block of data;
• and
• a processor coupled to the memory, the processor comprising processing resources, the processing resources comprising execution circuitry to:
• receive a send gather message instruction identifying a number of registers to access for a send message and identifying IDs of a plurality of individual registers corresponding to the number of registers, wherein the send gather message comprises a first phase and a second phase;
• perform an immediate move of the IDs of the plurality of individual registers to an architectural register of the execution circuitry;
• include a pointer to the architectural register in the send gather message instruction;
• and
• dispatch the send gather message instruction to a send pipeline of the execution circuitry.