Register renaming to reduce bypass and increase apparent...

Details Register renaming to reduce bypass and increase apparent... Register renaming to reduce bypass and increase apparent...

2005-09-13

2005-09-13

Coleman, Eric (Department: 2183)

Electrical computers and digital processing systems: processing

Dynamic instruction dependency checking, monitoring or...

Commitment control or register bypass

Reexamination Certificate

active

06944751

ABSTRACT:
The invention provides a processor architecture that bypasses data hazards. The architecture has an array of pipelines and a register file. Each of the pipelines includes an array of execution units. The register file has a first section of n registers (e.g., 128 registers) and a second section of m registers (e.g., 16 registers). A write mux couples speculative data from the execution units to the second set of m registers and non-speculative data from a write-back stage of the execution units to the first section of n registers. A read mux couples the speculative data from the second set of m registers to the execution units to bypass data hazards within the execution units. The register file preferably includes column decode logic for each of the registers in the second section of m registers to architect speculative data without moving data. The decode logic first decodes, and then selects, an age of the producer of the speculative state; the newest producer enables the decode.

REFERENCES:
patent: 5535346 (1996-07-01), Thomas, Jr.
patent: 5835968 (1998-11-01), Mahalingaiah et al.
patent: 5944811 (1999-08-01), Motomura
patent: 6012137 (2000-01-01), Bublil et al.
patent: 6219781 (2001-04-01), Arora
patent: 6301653 (2001-10-01), Mohamed et al.
patent: 6304955 (2001-10-01), Arora
patent: 6430679 (2002-08-01), Heeb
patent: 6587941 (2003-07-01), Flacks et al.
patent: 6766440 (2004-07-01), Steiss et al.

Affiliated with

Also associated with

Rating

Register renaming to reduce bypass and increase apparent... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Register renaming to reduce bypass and increase apparent..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Register renaming to reduce bypass and increase apparent... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3386416