Six-stage pipeline processor based on RISC-V instruction set

Abstract

The invention relates to the field of computer components, in particular to a six-level assembly line processor based on an RISC-V instruction set, which comprises a six-level assembly line, a first register, a data memory and an instruction memory, and is characterized in that an instruction fetching module, a decoding module, a distribution module, a transmitting module, an execution module and a write-back module of the six-level assembly line are connected in sequence; the data memory is connected with the execution module and the write-back module, the first register is connected with the distribution module and the write-back module, and the instruction memory is connected with the instruction fetching module. The characteristic of out-of-order execution of double-instruction decoding emission is achieved, and a reference model is provided for superscalar parallel design of the RISC-V processor. And a Gshare branch prediction circuit is provided, so that the branch prediction success rate is improved. The register is renamed, so that assembly line cavitation caused by reading after writing and writing after writing is remarkably reduced. And a complete branch prediction failure repair circuit is provided, so that the time loss caused by branch prediction failure is reduced.

Description

technical field [0001] The invention relates to the field of computer components, in particular to a six-stage pipeline processor based on a RISC-V instruction set. Background technique [0002] In the traditional classification of computer architecture, processor applications are divided into three fields, namely: server field, program counter field and embedded field. At present, in the field of server and program counter, the x86 architecture is a well-deserved giant, and no instruction set architecture can shake its monopoly. [0003] In recent years, with the rapid development of Internet of Things technology, the market has an increasing demand for low-power, high-performance processors used in smart terminals. How to reduce the cost and power consumption while meeting the performance requirements of the intelligent terminal on the processor is a relatively popular research direction. At present, this direction is mainly monopolized by ARM's Cotex-A series processor ...

AI Technical Summary

Problems solved by technology

[0004] The depth of existing pipelines in my country is relatively shallow, most of them have no out-of-order superscalar parallel characteristics, and the processor performance is not high

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