Multiple Execution Unit Processor Core

摘要

A processor core includes multiple execution units, such as a first execution unit and a second execution unit. The first execution unit may include a first functional component that supports a superscalar pipeline. The second execution unit may include a second functional component supporting a scalar pipeline. The processor core may operate in a high-performance mode by using the first execution unit and powering down the second execution unit and operate in a low-power mode by using the second execution unit and powering down the first execution unit. The processor core may include common elements shared between the multiple execution units, such as a common instruction cache, data cache, register file(s), and more.

主权项

1. A system comprising:
a processor core comprising:
a first execution unit within the processor core; anda second execution unit within the processor core, the second execution unit different from the first execution unit; and where the processor core is configured to:
operate in a first mode by using the first execution unit and powering down the second execution unit; and operate in a second mode by using the second execution unit and powering down the first execution unit.