Imran A Ahmed from 2349 Jefferson St UNIT 217, Torrance, CA 90501, age 73, Phone: (310)6532223

Simd Permutations With Extended Range In A Data Processor
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US Patent:

20090100247, Apr 16, 2009
Filed:

Oct 12, 2007
Appl. No.:

11/871659
Inventors:

William C. Moyer - Dripping Springs TX, US
Imran Ahmed - Austin TX, US
Dan E. Tamir - Austin TX, US
International Classification:

G06F 9/30
G06F 9/02
US Classification:

712 4, 712E09002, 712E09024
Abstract:

A processor in a data processing system executes a permutation instruction which identifies a first source register, at least one other source register, and a destination register. The first source register stores at least one in-range index value for the at least one other source register and at least one out-of-range index value for the at least one other source register. The at least one other source register stores a plurality of vector element values, wherein each in-range index value indicates which vector element value of the at least one other source register is to be stored into a corresponding vector element of the destination register. Each out-of-range index value is used to indicate which one of at least two predetermined constant values is to be stored into a corresponding vector element of the destination register. Partial table lookups using a permutation instruction shortens the time required to retrieve data.

Data Processing System Having Bit Exact Instructions And Methods Therefor
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US Patent:

20070239968, Oct 11, 2007
Filed:

Apr 5, 2006
Appl. No.:

11/278725
Inventors:

William Moyer - Dripping Springs TX, US
Imran Ahmed - Austin TX, US
Dan Tamir - Austin TX, US
International Classification:

G06F 9/44
US Classification:

712221000
Abstract:

A method for operating a data processing system is provided. The method includes providing a first operand stored in a first register, providing a second operand stored in the register, providing a third operand stored in the register. The method further includes executing a first instruction, where executing the first instruction comprises: (1) retrieving the first operand, the second operand, and the third operand from the first register; (2) performing an operation using the first operand, the second operand, and the third operand to generate a bit exact result.

Imran A Ahmed