US 2019/0102195 A1 · APPARATUS AND METHOD FOR PERFORMING TRANSFORMS OF PACKED COMPLEX DATA HAVING REAL AND IMAGINARY COMPONENTS

Abstract

An apparatus and method for performing a transform on complex data. For example, one embodiment of a processor comprises: a decoder to decode a first instruction to generate a decoded instruction; a first source register to store a first plurality of packed real and imaginary data elements; a second source register to store a second plurality of packed real and imaginary data elements; a third source register to store a third plurality of packed real and imaginary data elements; execution circuitry to execute the decoded instruction, the execution circuitry comprising: multiplier circuitry to select real and imaginary data elements in the first and second source registers to multiply based on an immediate of the first instruction, the multiplier circuitry to multiply first packed data elements from the first source register with second packed data elements from the second source register in accordance with the immediate to generate a plurality of real and imaginary products, adder circuitry to select real and imaginary data elements in the third source register based on the immediate, the adder circuitry to add and subtract selected real and imaginary values from the real and imaginary products to generate first real and imaginary results; scaling, rounding, and/or saturation circuitry to scale, round, and/or saturate the first real and imaginary results to generate final real and imaginary data elements; and a destination register to store the final real and imaginary data elements in specified data element positions.

Claims30

Dependent claims

A processor comprising:

a decoder to decode a first instruction to generate a decoded instruction;
a first source register to store a first plurality of packed real and imaginary data elements;
a second source register to store a second plurality of packed real and imaginary data elements;
a third source register to store a third plurality of packed real and imaginary data elements;
execution circuitry to execute the decoded instruction, the execution circuitry comprising:
multiplier circuitry to select real and imaginary data elements in the first and second source registers to multiply based on an immediate of the first instruction, the multiplier circuitry to multiply first packed data elements from the first source register with second packed data elements from the second source register in accordance with the immediate to generate a plurality of real and imaginary products,
adder circuitry to select real and imaginary data elements in the third source register based on the immediate, the adder circuitry to add and subtract selected real and imaginary values from the real and imaginary products to generate first real and imaginary results;
scaling, rounding, and/or saturation circuitry to scale, round, and/or saturate the first real and imaginary results to generate final real and imaginary data elements;
and
a destination register to store the final real and imaginary data elements in specified data element positions.

7 more elements

A method comprising:

decoding a first instruction to generate a decoded instruction;
storing a first plurality of packed real and imaginary data elements in a first source register;
storing a second plurality of packed real and imaginary data elements in a second source register;
storing a third plurality of packed real and imaginary data elements in a third source register;
selecting real and imaginary data elements in the first and second source registers to multiply based on an immediate of the first instruction,
multiplying first packed data elements from the first source register with second packed data elements from the second source register in accordance with the immediate to generate a plurality of real and imaginary products,
select real and imaginary data elements in the third source register based on the immediate,
adding and subtracting selected real and imaginary values from the real and imaginary products to generate first real and imaginary results;
scaling, rounding, and/or saturating the first real and imaginary results to generate final real and imaginary data elements;
and
storing the final real and imaginary data elements in specified data element positions of a destination register.

8 more elements

A machine-readable medium having program code stored thereon which, when executed by a machine, causes the machine to perform the operations of:

decoding a first instruction to generate a decoded instruction;
storing a first plurality of packed real and imaginary data elements in a first source register;
storing a second plurality of packed real and imaginary data elements in a second source register;
storing a third plurality of packed real and imaginary data elements in a third source register;
selecting real and imaginary data elements in the first and second source registers to multiply based on an immediate of the first instruction,
multiplying first packed data elements from the first source register with second packed data elements from the second source register in accordance with the immediate to generate a plurality of real and imaginary products,
select real and imaginary data elements in the third source register based on the immediate,
adding and subtracting selected real and imaginary values from the real and imaginary products to generate first real and imaginary results;
scaling, rounding, and/or saturating the first real and imaginary results to generate final real and imaginary data elements;
and
storing the final real and imaginary data elements in specified data element positions of a destination register.

8 more elements

Dependencies are inferred from the claim text.

Apparatus and method for performing transforms of packed complex data having real and imaginary components

Life of this patent

Apparatus and method for performing transforms of packed complex data having real and imaginary components

Life of this patent

Abstract

Claims30