INSTRUCTION RETIREMENT UNIT, INSTRUCTION EXECUTION UNIT, PROCESSING UNIT, CoMPUTING DEVICE, AND INSTRUCTION PROCESSING METHOD

An instruction execution unit, comprising:

• at least one processor;
• and
• a memory communicatively connected with the at least one processor, wherein
• the memory stores processor instructions executable by the at least one processor, and the processor instructions, when executed by the at least one processor, cause the at least one processor to:
• send a completion request signal to an instruction retirement unit, wherein the completion request signal is used to request completion of instructions to be completed;
• and
• after receiving a completion permission signal sent from the instruction retirement unit, send instruction completion information of the instructions to be completed to the instruction retirement unit, wherein the instruction retirement unit stores the instruction completion information into instruction buffer table entries in a buffer, performs, based on the instruction completion information stored in each of the instruction buffer table entries, retirement processing on the instructions to be retired that have already been completed and have not been retired, and deletes the instruction completion information of retired instructions from the instruction buffer table entries, wherein a number of the instruction buffer table entries in the buffer is greater than 1 and less than an out-of-order degree allowed by a processing unit, and each of the instruction buffer table entries is used to store the instruction completion information of one instruction.

An instruction processing method applied to an instruction retirement unit, the instruction processing method comprising:

• receiving a completion request signal, which is sent by an instruction execution unit for instructions to be completed, wherein the completion request signal is used to request completion of the instructions to be completed;
• after determining, based on a new-old relationship between retired instructions and the instructions to be completed, that the instructions to be completed can be completed, sending, to the instruction execution unit, a completion permission signal for the instructions to be completed, receiving instruction completion information of the instructions to be completed sent from the instruction execution unit, and storing the instruction completion information of the instructions to be completed into instruction buffer table entries in a buffer, wherein a number of the instruction buffer table entries in the buffer is greater than 1 and less than an out-of-order degree allowed by a processing unit, and each of the instruction buffer table entries is used to store the instruction completion information of one instruction;
• and
• performing, based on the instruction completion information stored in each of the instruction buffer table entries, retirement processing on instructions that have already been completed and have not been retired, and deleting the instruction completion information of the retired instructions from the instruction buffer table entries.