An instruction fetching method, device, electronic equipment and storage medium

Abstract

The embodiment of the present invention discloses an instruction fetching method, device, electronic equipment, and storage medium, relates to the technical field of processors, and can overcome the disadvantages of low index fetching efficiency and high power consumption in the prior art. The method includes: predicting whether to switch to the OC path instruction fetch mode according to the fetch address of the IC path fetch mode this time; from the information collection device, searching for the following content associated with the fetch address: from the current prediction result corresponding to The confidence level of changing the instruction fetch mode to another instruction fetch mode; determine whether the current prediction result needs to be calibrated according to the search result; calibrate or keep the current prediction result according to the determined result, and enter the corresponding instruction fetch mode based on the prediction result to perform fetching refer to. The invention is an optimization method for the existing IC / OC path instruction fetching mode switching prediction technology, which is applicable to the scene of how to improve the instruction fetching efficiency of a processor and how to reduce the front-end power consumption of the processor pipeline.

Description

technical field [0001] The present invention relates to the technical field of processors, and in particular, to an instruction fetching method, apparatus, electronic device and storage medium. Background technique [0002] Currently, in processor design, an IC (Instruction Cache, instruction cache device) is a cache device for storing instruction data information. After the processor reads the instruction data from the IC, it will transfer the instruction data to the decoding module for instruction decoding, and then transmit the instruction data to the corresponding instruction execution unit through the decoding module. However, with the development of technology, a device design of Micro-Op Cache (OC, micro-instruction cache device) is proposed in some product designs, which is used as a new type of cache device to store data information after instruction decoding. Based on the above design, such as figure 1 As shown, after obtaining the physical address (ie, the instr...

AI Technical Summary

Problems solved by technology

However, if you blindly switch to the OC path instruction fetch mode, but cannot fetch a considerable number of instructions, the performance of the processor will be greatly damaged, and the instruction fetch efficiency will be reduced instead.

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