Loop streaming detector for standard and complex instruction types

摘要

A processor includes a microcode storage comprising a plurality of microcode flows and a decode logic coupled to the microcode storage. The decode logic is configured to receive a first instruction, decode the first instruction into an entry point vector to a first microcode flow in the microcode storage, the entry point vector comprising a first indicator specifying a number of clock cycles associated with the first microcode flow, initiate the microcode storage, wherein the microcode storage inserts microinstructions of the first microcode flow into an instruction queue, count clock cycles after initiating the microcode storage, and decode a second instruction without first receiving a return from the microcode storage, wherein the second instruction is decoded at a particular clock cycle based on the number of clock cycles associated with the first microcode flow.

主权项

1. A processor comprising:
a microcode storage comprising a plurality of microcode flows; and a decode logic coupled to the microcode storage, the decode logic configured to:
receive a first instruction;decode the first instruction into an entry point vector to a first microcode flow in the microcode storage, the entry point vector comprising a first indicator specifying a number of clock cycles associated with the first microcode flow;initiate the microcode storage, wherein the microcode storage inserts microinstructions of the first microcode flow into an instruction queue;count clock cycles after initiating the microcode storage; anddecode a second instruction without first receiving a return from the microcode storage, wherein the second instruction is decoded at a particular clock cycle based on the number of clock cycles associated with the first microcode flow.