DETECTING ERRORS IN REGISTER RENAMING BY COMPARING VALUE REPRESENTING COMPLETE ERROR FREE SET OF IDENTIFIERS AND VALUE REPRESENTING IDENTIFIERS IN REGISTER RENAME UNIT

摘要

A processor includes physical storage locations, and a register rename unit that includes a plurality of register rename storage structures. At a given time, each of a complete group of physical storage location identifiers is to be stored in one, but only one, of the plurality of register rename storage structures, unless there is an error. Each of the complete group of physical storage location identifiers is to identify a different one of the physical storage locations. The register rename unit is to detect an error when a first value, which is to be equal to an operation on the complete group of the physical storage location identifiers with no errors, is inconsistent with a second value. The second value is to represent the operation on all physical storage location identifiers that are to be stored in the plurality of register rename storage structures at the given time.