INSTRUCTIONS FOR VECTOR MULTIPLICATION OF UNSIGNED WORDS WITH ROUNDING

    公开(公告)号:US20220318009A1

    公开(公告)日:2022-10-06

    申请号:US17573556

    申请日:2022-01-11

    Abstract: Disclosed embodiments relate to executing a vector multiplication instruction. In one example, a processor includes fetch circuitry to fetch the vector multiplication instruction having fields for an opcode, first and second source identifiers, and a destination identifier, decode circuitry to decode the fetched instruction, execution circuitry to, on each of a plurality of corresponding pairs of fixed-sized elements of the identified first and second sources, execute the decoded instruction to generate a double-sized product of each pair of fixed-sized elements, the double-sized product being represented by at least twice a number of bits of the fixed size, and generate an unsigned fixed-sized result by rounding the most significant fixed-sized portion of the double-sized product to fit into the identified destination.

    APPARATUS AND METHOD FOR COMPLEX MATRIX MULTIPLICATION

    公开(公告)号:US20220207107A1

    公开(公告)日:2022-06-30

    申请号:US17133473

    申请日:2020-12-23

    Abstract: An apparatus and method for complex matrix multiplication. For example, one embodiment of a processor comprises: a decoder to decode a first complex matrix multiplication instruction; execution circuitry to execute the first complex matrix multiplication instruction, the execution circuitry comprising parallel multiplication circuitry to multiply real values from the first plurality of real and imaginary values with corresponding real values from the second plurality of real and imaginary values to generate a first plurality of real products, to multiply imaginary values from the first plurality of real and imaginary values with corresponding imaginary values from the second plurality of real and imaginary values to generate a second plurality of real products; and addition/subtraction circuitry to subtract each real product in the second plurality of real products from a corresponding real product in the first plurality of real products to produce a corresponding real value in the result matrix. The decoder may also decode and the execution circuitry may execute a second complex matrix multiplication instruction to multiply real and imaginary values from the first plurality with corresponding imaginary and real values, respectively, from the second plurality to generate first and second pluralities of imaginary products, and to add corresponding imaginary products to produce a corresponding imaginary value in the result matrix.

    APPARATUS AND METHOD FOR COMPLEX MATRIX CONJUGATE TRANSPOSE

    公开(公告)号:US20220197654A1

    公开(公告)日:2022-06-23

    申请号:US17133400

    申请日:2020-12-23

    Abstract: An apparatus and method for complex matrix conjugation. For example, one embodiment of a processor comprises: a decoder to decode a complex conjugate transpose instruction including a source operand to identify a complex source matrix and a destination operand to identify a complex result matrix, the complex source matrix to store a first plurality of complex values and the complex result matrix to store a second plurality of complex values, each complex value in the first and second plurality of complex values including a real component and an imaginary component; a plurality of registers or local memory to store all or a subset of the first plurality of complex values; and execution circuitry to execute the complex conjugate transpose instruction using matrix conjugation hardware logic to determine a plurality of complex conjugate values corresponding to the first plurality of complex values, and transpose hardware logic to perform a matrix transpose operation using the plurality of complex conjugate values to generate a result matrix.

    APPARATUS AND METHOD FOR RIGHT-SHIFTING PACKED QUADWORDS AND EXTRACTING PACKED WORDS

    公开(公告)号:US20220129268A1

    公开(公告)日:2022-04-28

    申请号:US17518336

    申请日:2021-11-03

    Abstract: An apparatus and method for performing right-shifting operations on packed quadword data. For example, one embodiment of a processor comprises a decoder to decode a right-shift instruction, a first source register to store a plurality of packed quadword data elements, and execution circuitry to execute the decoded right-shift instruction. The execution circuitry comprises shift circuitry with sign preservation logic to right-shift first and second packed quadword data elements in the first source register by an amount specified in an immediate value or in a control value in a second source register, the right-shifting to generate first and second right-shifted quadwords, the sign preservation logic to shift in the sign bit. The execution circuitry is to cause selection of 16 most significant bits of the first and second right-shifted quadwords to be written to 16 least significant bit regions of first and second quadword data element locations of a destination register.

    APPARATUS AND METHOD FOR RIGHT SHIFTING PACKED QUADWORDS AND EXTRACTING PACKED DOUBLEWORDS

    公开(公告)号:US20220129267A1

    公开(公告)日:2022-04-28

    申请号:US17518291

    申请日:2021-11-03

    Abstract: An apparatus and method for performing right-shifting operations on packed quadword data. For example, one processor embodiment comprises a decoder to decode a right-shift instruction, a first source register to store a plurality of packed quadword data elements, and execution circuitry to execute the decoded right-shift instruction. The execution circuitry comprises shift circuitry with sign preservation logic to right-shift first and second packed quadword data elements in the first source register by an amount specified in an immediate value or in a control value in a second source register, the right-shifting to generate first and second right-shifted quadwords, the sign preservation logic to shift in the sign bit. The execution circuitry is to cause selection of 32 most significant bits of the first and second right-shifted quadwords to be written to 32 least significant bit positions of first and second quadword data element locations of a destination register.

    INTERRUPTIBLE AND RESTARTABLE MATRIX MULTIPLICATION INSTRUCTIONS, PROCESSORS, METHODS, AND SYSTEMS

    公开(公告)号:US20210326131A1

    公开(公告)日:2021-10-21

    申请号:US17362854

    申请日:2021-06-29

    Abstract: A processor of an aspect includes a decode unit to decode a matrix multiplication instruction. The matrix multiplication instruction is to indicate a first memory location of a first source matrix, is to indicate a second memory location of a second source matrix, and is to indicate a third memory location where a result matrix is to be stored. The processor also includes an execution unit coupled with the decode unit. The execution unit, in response to the matrix multiplication instruction, is to multiply a portion of the first and second source matrices prior to an interruption, and store a completion progress indicator in response to the interruption. The completion progress indicator to indicate an amount of progress in multiplying the first and second source matrices, and storing corresponding result data to the third memory location, that is to have been completed prior to the interruption.

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