Data processor with branch prediction and method of operation

Electrical computers and digital processing systems: memory – Storage accessing and control – Hierarchical memories

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

711145, 395586, G06F 1208

Patent

active

057617236

ABSTRACT:
A data processor (10) has a branch target address cache (48) for storing the target addresses of a number of recently taken branch instructions. Normally, each fetch address is compared to the contents of the branch target address cache. If a hit occurs, then the data processor branches to the cached target address. The data processor also has a dispatch unit (60) that invalidates the data stored in the branch target address cache if and when it determines that the branch target address cache "hit" on an instruction that was not a branch instruction at all, a "phantom branch." The data processor thereby automatically invalidates its branch target address cache data after a context switch.

REFERENCES:
patent: 4654819 (1987-03-01), Stiffer et al.
patent: 5093778 (1992-03-01), Favor et al.
patent: 5136697 (1992-08-01), Johnson
patent: 5163140 (1992-11-01), Stiles et al.
patent: 5226130 (1993-07-01), Favor et al.
patent: 5265213 (1993-11-01), Werser et al.
patent: 5319760 (1994-06-01), Mason et al.
patent: 5327536 (1994-07-01), Suzuki
patent: 5327547 (1994-07-01), Stiles et al.
patent: 5353421 (1994-10-01), Emma et al.
patent: 5394529 (1995-02-01), Brown, III et al.
patent: 5404467 (1995-04-01), Saba et al.
patent: 5414822 (1995-05-01), Saito et al.
patent: 5423011 (1995-06-01), Blaner et al.
patent: 5423048 (1995-06-01), Jager
Intel Corporation, "Pentium Family User's Manual", vol. 3: Architecture and Programming Manual, pp. 16-1 through 16-31 (1994).
Advanced Micro Devices, Inc. "Am29000 and Am29005 User's Manual and Data Sheet 32-Bit Streamlined Instruction Processor", Rev. 1, pp. 7-1 through 7-38 (1993).
Motorola, "MC88110 Second Generation RISC Microprocessor User's Manual", pp. 8-1 through 8-74 (1991).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Data processor with branch prediction and method of operation 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 processor with branch prediction and method of operation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data processor with branch prediction and method of operation will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1474829

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.