Device, method and system for cross-cluster communication of operand values

A method at a processor, the method comprising:

• detecting a first strand and a second strand each comprising respective micro-operations (uops) of a sequence of uops;
• identifying a condition wherein:
• a first micro-operation (uop) of the first strand is to produce a value of an operand;
• and
• a second uop of the second strand is to consume the value of the operand;
• based on the condition, supplementing one of the first strand or the second strand with a third uop of a xmov type which is to request a communication between physical registers of different respective clusters, wherein the first uop indicates the operand;
• and
• sending the first strand and the second strand to a first cluster of the processor and a second cluster of the processor, respectively, wherein a cross-cluster network of the processor couples a first physical register file (PRF) of the first cluster with a second PRF of the second cluster.

A system comprising:

• a memory;
• a memory controller;
• and
• a processor coupled to the memory via the memory controller, the processor comprising:
• a first cluster comprising a first physical register file (PRF);
• a second cluster comprising a second PRF;
• a cross-cluster network which couples the first PRF with the second PRF;
• first circuitry to detect a first strand and a second strand each comprising respective micro-operations (uops) of a sequence of uops;
• second circuitry coupled to the first circuitry, the second circuitry to identify a condition wherein:
• a first micro-operation (uop) of the first strand is to produce a value of an operand;
• and
• a second uop of the second strand is to consume the value of the operand;
• third circuitry coupled to the second circuitry, wherein, based on the condition, the third circuitry is to supplement one of the first strand or the second strand with a third uop of a xmov type which is to request a communication between physical registers of different respective clusters, wherein the first uop indicates the operand;
• and
• fourth circuitry coupled to send the first strand and the second strand to the first cluster and the second cluster, respectively.