Patent · US Active

Method and system for data dependent performance increment and power reduction

US7502918B1 · kind B1 · utility

9Cited by

9References

1Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Harry Barowski · Balingen, DE
Tobias Gemmeke · Santa Clara, US
Tim Niggemeier · Laatzen, DE
Thomas Pflueger · Echterdingen, DE

Key dates

Filing date	Mar 28, 2008
Grant date	Mar 10, 2009
Priority date	—
Expiry date	Mar 28, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG06F9/384
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method of dispatching instructions includes dispatching original instructions into an instruction buffer, including at least one operand, renaming the operand, selecting the original instructions from the instruction buffer, sending selected instructions with explicit bits, to an internal operation code exchange table, which includes replacement rules for replacing the selected instructions with a simplified instruction based on the original instructions and the explicit bits, replacing the selected instructions with the simplified instruction in accordance with the explicit bits, and issuing the simplified instructions to an execution unit by sending the simplified instruction and all explicit bits for the operands to a content addressable memory address logic of the internal operation code exchange table, wherein if a bitvector, consisting of the original instruction and the explicit bits, matches a pattern stored in the internal operation code exchange table, the original instruction is replaced by the simplified instruction.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.