APPARATUS AND METHOD FOR PREFETCHING DATA WITH HINTS

    公开(公告)号:US20250004773A1

    公开(公告)日:2025-01-02

    申请号:US18217428

    申请日:2023-06-30

    Abstract: An apparatus and method are described for prefetching data with hints. For example, one embodiment of a processor comprises: a plurality of cores to process instructions; a first core of the plurality of cores comprising: decoder circuitry to decode instructions indicating memory operations including load operations of a first type with shared data hints and load operations of a second type without shared data hints; execution circuitry to execute the instructions to perform the memory operations; data prefetch circuitry to store tracking data in a tracking data structure responsive to the memory operations, a portion of the tracking data associated with the first type of load operations; and the data prefetch circuitry to detect memory access patterns using the tracking data, the data prefetch circuitry to responsively issue one or more prefetch operations using shared data hints based, at least in part, on the portion of the tracking data associated with the first type of load operations.

    64-BIT VIRTUAL ADDRESSES HAVING METADATA BIT(S) AND CANONICALITY CHECK THAT DOES NOT FAIL DUE TO NON-CANONICAL VALUES OF METADATA BIT(S)

    公开(公告)号:US20220197822A1

    公开(公告)日:2022-06-23

    申请号:US17133570

    申请日:2020-12-23

    Abstract: Techniques to allow use of metadata in unused bits of virtual addresses are described. A processor of an aspect includes a decode circuit to decode a memory access instruction. The instruction to indicate one or more memory address operands that are to have address generation information and metadata. An execution circuit coupled with the decode circuit to generate a 64-bit virtual address based on the one or more memory address operands. The 64-bit virtual address having a bit 63, an X-bit address field starting at a bit 0 to store an address generated from the address generation information, and one or more metadata bits to store the metadata. The execution circuit also to perform a canonicality check on the 64-bit virtual address that does not fail due to non-canonical values of the metadata stored in the one or more metadata bits. Other processors, methods, systems, and instructions are disclosed.

    SYSTEMS FOR PERFORMING INSTRUCTIONS TO QUICKLY CONVERT AND USE TILES AS 1D VECTORS

    公开(公告)号:US20210318874A1

    公开(公告)日:2021-10-14

    申请号:US17240882

    申请日:2021-04-26

    Abstract: Disclosed embodiments relate to systems for performing instructions to quickly convert and use matrices (tiles) as one-dimensional vectors. In one example, a processor includes fetch circuitry to fetch an instruction having fields to specify an opcode, locations of a two-dimensional (2D) matrix and a one-dimensional (1D) vector, and a group of elements comprising one of a row, part of a row, multiple rows, a column, part of a column, multiple columns, and a rectangular sub-tile of the specified 2D matrix, and wherein the opcode is to indicate a move of the specified group between the 2D matrix and the 1D vector, decode circuitry to decode the fetched instruction; and execution circuitry, responsive to the decoded instruction, when the opcode specifies a move from 1D, to move contents of the specified 1D vector to the specified group of elements.

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