Data processing system having prediction by using an embedded gu

Details Data processing system having prediction by using an embedded gu Data processing system having prediction by using an embedded gu

1992-10-30

1995-10-31

Lim, Krisna

Boots, shoes, and leggings

364DIG1, 3642631, 3642617, 3642606, 3642607, G06F 938

Patent

active

054637465

ABSTRACT:
A data processing system includes branch prediction apparatus for storing branch data in a branch prediction RAM after each branch has occurred. The RAM interfaces with branch logic means which tracks whether a branch is in progress and if a branch was guessed. An operational code compression means forms each instruction into a new operation code of lesser bits and embeds a guess bit into the new operational code. Control means decode the compressed operational code as an input to an instruction execution unit whereby conditional branch occurs based on the guess bit provided a branch instruction is not in progress in the system.

REFERENCES:
patent: 4370711 (1983-01-01), Smith
patent: 4456955 (1984-06-01), Yanagita et al.
patent: 4477872 (1984-10-01), Losq et al.
patent: 4760520 (1988-07-01), Shintani et al.
patent: 4777592 (1988-10-01), Jones et al.
patent: 4814976 (1989-03-01), Hansen et al.
patent: 4860197 (1989-08-01), Langendorf et al.
patent: 4984154 (1991-01-01), Hanatani et al.
patent: 5146570 (1992-09-01), Hester et al.
patent: 5268213 (1993-11-01), Weiser et al.
patent: 5283873 (1994-02-01), Steely, Jr. et al.
patent: 5287467 (1994-02-01), Blaner et al.
patent: 5297281 (1994-03-01), Emma et al.
"Opcode Remap & Compression in Hard-Wired RISC Microprocessor," IBM Technical Disclosure Bulletin, vol. 32 No. 10A, Mar. 1990, N.Y., p. 349.
Lilja; "Reducing The Branch Penalty in Pipelined Processors". IEEE Jul. 1988, pp. 47-55.
Dwyer et al., "A Fast Instruction Dispatch Unit for Multiple and Out-of-Sequence Issuances" EE-CEG-87.varies.15, pp. 1-10 & FIGS. 1-9.
McFarling et al.; "Reducing the Cost of Branched" IEEE 1986, pp. 396-403.
Sohi et al.; "Instruction Issue Logic for High Performance Interruptable Pipelined Processors"; ACM 1987; pp. 27-34.
"Branch Prediction Strategies and Branch Target Buffer Design," Computer, vol. 17, No. 2, Jan. 1984, pp. 6-21.

Affiliated with

Also associated with

Rating

Data processing system having prediction by using an embedded gu does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data processing system having prediction by using an embedded gu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data processing system having prediction by using an embedded gu will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1780676