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    Nested loop control
    1.
    发明授权
    Nested loop control 有权

    公开(公告)号：US11442709B2

    公开(公告)日：2022-09-13

    申请号：US16983429

    申请日：2020-08-03

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Kai Chirca ,  Timothy D. Anderson ,  Todd T. Hahn ,  Alan L. Davis

    IPC: G06F8/41 ,  G06F5/06 ,  G06F9/30

    Abstract: A method for compiling and executing a nested loop includes initializing a nested loop controller with an outer loop count value and an inner loop count value. The nested loop controller includes a predicate FIFO. The method also includes coalescing the nested loop and, during execution of the coalesced nested loop, causing the nested loop controller to populate the predicate FIFO and executing a get predicate instruction having an offset value, where the get predicate returns a value from the predicate FIFO specified by the offset value. The method further includes predicating an outer loop instruction on the returned value from the predicate FIFO.

    Linear-time algorithm to determine the maximum number of iterations of the iterative algorithm for data-flow analysis for reducible loops
    2.
    发明授权
    Linear-time algorithm to determine the maximum number of iterations of the iterative algorithm for data-flow analysis for reducible loops 有权

    公开(公告)号：US10025569B2

    公开(公告)日：2018-07-17

    申请号：US15213425

    申请日：2016-07-19

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Alan L. Davis ,  Paul Fuqua ,  Timothy John Harvey

    IPC: G06F9/45 ,  G06F8/41

    Abstract: A compiler converts a high level language program into a corresponding machine level language program. The compiler forms an initial control flow graph of the high level language program with nodes and edge, the nodes including a starting node, initializing a collapse count to zero, and sets the initial control flow graph as a current control flow graph. The compiler performs iterative collapsing operations on the current control flow graph until only a single node remains. After performing the iterative collapsing operations, data flow analysis is performed on the initial control flow graph for a number of iterations equal to one greater than the collapse count. Then, the machine level language program corresponding to the high level language program is generated based upon the data flow analysis.

    NESTED LOOP CONTROL
    3.
    发明公开
    NESTED LOOP CONTROL 审中-公开

    公开(公告)号：US20240086193A1

    公开(公告)日：2024-03-14

    申请号：US18507222

    申请日：2023-11-13

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Kai Chirca ,  Timothy D. Anderson ,  Todd T. Hahn ,  Alan L. Davis

    IPC: G06F9/30

    CPC classification number: G06F9/30065 ,  G06F9/3013

    Abstract: A nested loop controller includes a first register having a first value initialized to an initial first value, a second register having a second value initialized to an initial second value, and a third register configured as a predicate FIFO, initialized to have a third value. The second value is advanced in response to a tick instruction during execution of a loop. In response to the second value reaching a second threshold, the second register is reset to the initial second value. The nested loop controller further includes a comparator coupled to the second register and to the predicate FIFO and configured to provide an outer loop indicator value as input to the predicate FIFO when the second value is equal to the second threshold, and provide an inner loop indicator value as input to the predicate FIFO when the second value is not equal to the second threshold.

    Nested loop control
    4.
    发明授权
    Nested loop control 有权

    公开(公告)号：US11055095B2

    公开(公告)日：2021-07-06

    申请号：US16422823

    申请日：2019-05-24

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Kai Chirca ,  Timothy D. Anderson ,  Todd T. Hahn ,  Alan L. Davis

    IPC: G06F9/30

    Abstract: A nested loop controller includes a first register having a first value initialized to an initial first value, a second register having a second value initialized to an initial second value, and a third register configured as a predicate FIFO, initialized to have a third value. The second value is advanced in response to a tick instruction during execution of a loop. In response to the second value reaching a second threshold, the second register is reset to the initial second value. The nested loop controller further includes a comparator coupled to the second register and to the predicate FIFO and configured to provide an outer loop indicator value as input to the predicate FIFO when the second value is equal to the second threshold, and provide an inner loop indicator value as input to the predicate FIFO when the second value is not equal to the second threshold.

    Nested loop control
    5.
    发明授权
    Nested loop control 有权

    公开(公告)号：US10732945B1

    公开(公告)日：2020-08-04

    申请号：US16422845

    申请日：2019-05-24

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Kai Chirca ,  Timothy D. Anderson ,  Todd T. Hahn ,  Alan L. Davis

    IPC: G06F8/41 ,  G06F5/06 ,  G06F9/30

    Abstract: A method for compiling and executing a nested loop includes initializing a nested loop controller with an outer loop count value and an inner loop count value. The nested loop controller includes a predicate FIFO. The method also includes coalescing the nested loop and, during execution of the coalesced nested loop, causing the nested loop controller to populate the predicate FIFO and executing a get predicate instruction having an offset value, where the get predicate returns a value from the predicate FIFO specified by the offset value. The method further includes predicating an outer loop instruction on the returned value from the predicate FIFO.

    Nested loop control
    7.
    发明授权
    Nested loop control 有权

    公开(公告)号：US12175244B2

    公开(公告)日：2024-12-24

    申请号：US18507222

    申请日：2023-11-13

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Kai Chirca ,  Timothy D. Anderson ,  Todd T. Hahn ,  Alan L. Davis

    IPC: G06F9/30

    Abstract: A nested loop controller includes a first register having a first value initialized to an initial first value, a second register having a second value initialized to an initial second value, and a third register configured as a predicate FIFO, initialized to have a third value. The second value is advanced in response to a tick instruction during execution of a loop. In response to the second value reaching a second threshold, the second register is reset to the initial second value. The nested loop controller further includes a comparator coupled to the second register and to the predicate FIFO and configured to provide an outer loop indicator value as input to the predicate FIFO when the second value is equal to the second threshold, and provide an inner loop indicator value as input to the predicate FIFO when the second value is not equal to the second threshold.

    Nested loop control
    8.
    发明授权
    Nested loop control 有权

    公开(公告)号：US11816485B2

    公开(公告)日：2023-11-14

    申请号：US17367384

    申请日：2021-07-04

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Kai Chirca ,  Timothy D. Anderson ,  Todd T. Hahn ,  Alan L. Davis

    IPC: G06F9/30

    CPC classification number: G06F9/30065 ,  G06F9/3013

    Abstract: A nested loop controller includes a first register having a first value initialized to an initial first value, a second register having a second value initialized to an initial second value, and a third register configured as a predicate FIFO, initialized to have a third value. The second value is advanced in response to a tick instruction during execution of a loop. In response to the second value reaching a second threshold, the second register is reset to the initial second value. The nested loop controller further includes a comparator coupled to the second register and to the predicate FIFO and configured to provide an outer loop indicator value as input to the predicate FIFO when the second value is equal to the second threshold, and provide an inner loop indicator value as input to the predicate FIFO when the second value is not equal to the second threshold.

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