Branch prediction apparatus and method

Details Branch prediction apparatus and method Branch prediction apparatus and method

2003-01-09

2008-11-04

Chan, Eddie P (Department: 2183)

Electrical computers and digital processing systems: processing

Processing control

Branching

C712S238000, C712S239000

Reexamination Certificate

active

07447881

ABSTRACT:
A branch prediction apparatus has a configuration such that a predicted branch target address and an offset are obtained by referring to a branch history, an instruction fetch address and the offset are added to obtain a branch instruction address, the branch instruction address is subtracted from the predicted branch target address to obtain a predicted displacement, and this predicted displacement is compared with a displacement cut-out from an instruction by an instruction decoder, to judge whether the predicted branch target address is correct or not.

REFERENCES:
patent: 5142634 (1992-08-01), Fite et al.
patent: 5606676 (1997-02-01), Grochowski et al.
patent: 5835754 (1998-11-01), Nakanishi
patent: 5878254 (1999-03-01), Shimada et al.
patent: 5918045 (1999-06-01), Nishii et al.
patent: 5944817 (1999-08-01), Hoyt et al.
patent: 5948100 (1999-09-01), Hsu et al.
patent: 6247124 (2001-06-01), Joshi et al.
patent: 6647490 (2003-11-01), Keller et al.
patent: 6851043 (2005-02-01), Inoue
patent: 7024545 (2006-04-01), Zuraski, Jr. et al.
patent: H1-142941 (1989-06-01), None
patent: HEI 1-142941 (1989-06-01), None
patent: HEI 06-089173 (1994-03-01), None
patent: HEI7-210383 (1995-08-01), None
patent: 2000-132392 (2000-05-01), None
patent: 2000-172507 (2000-06-01), None
patent: 2005-500616 (2005-01-01), None
patent: WO 03/017091 (2003-02-01), None
U.S. Appl. No. 09/456,523, filed Dec. 8, 1999, Ukai et al., Fujitsu Limited.
Japanese Office Action mailed Jan. 24, 2006 in Japanese Patent Application No. 2002-191276 corresponding the present above-identified pending US patent application (3 pages), including partial English translation thereof (5 pages).

Affiliated with

Also associated with

Rating

Branch prediction apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Branch prediction apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Branch prediction apparatus and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4051484