公开(公告)号：US12182018B2

公开(公告)日：2024-12-31

申请号：US17133615

申请日：2020-12-23

Applicant: Intel Corporation

Inventor： Jayesh Gaur ,  Adarsh Chauhan ,  Vinodh Gopal ,  Vedvyas Shanbhogue ,  Sreenivas Subramoney ,  Wajdi Feghali

IPC: G06F12/0811 ,  G06F9/38 ,  G06F12/0862 ,  G06F12/0895

Abstract: Methods and apparatus relating to an instruction and/or micro-architecture support for decompression on core are described. In an embodiment, decode circuitry decodes a decompression instruction into a first micro operation and a second micro operation. The first micro operation causes one or more load operations to fetch data into one or more cachelines of a cache of a processor core. Decompression Engine (DE) circuitry decompresses the fetched data from the one or more cachelines of the cache of the processor core in response to the second micro operation. Other embodiments are also disclosed and claimed.

公开(公告)号：US12028094B2

公开(公告)日：2024-07-02

申请号：US17133622

申请日：2020-12-23

Applicant: Intel Corporation

Inventor： Jayesh Gaur ,  Adarsh Chauhan ,  Vinodh Gopal ,  Vedvyas Shanbhogue ,  Sreenivas Subramoney ,  Wajdi Feghali

IPC: H03M7/00 ,  G06F9/38 ,  G06F9/54 ,  H03M7/30

CPC classification number: H03M7/6029 ,  G06F9/3877 ,  G06F9/541

Abstract: Methods and apparatus relating to an Application Programming Interface (API) for fine grained low latency decompression within a processor core are described. In an embodiment, a decompression Application Programming Interface (API) receives an input handle to a data object. The data object includes compressed data and metadata. Decompression Engine (DE) circuitry decompresses the compressed data to generate uncompressed data. The DE circuitry decompress the compressed data in response to invocation of a decompression instruction by the decompression API. The metadata comprises a first operand to indicate a location of the compressed data, a second operand to indicate a size of the compressed data, a third operand to indicate a location to which decompressed data by the DE circuitry is to be stored, and a fourth operand to indicate a size of the decompressed data. Other embodiments are also disclosed and claimed.

公开(公告)号：US11645078B2

公开(公告)日：2023-05-09

申请号：US16729349

申请日：2019-12-28

Applicant: Intel Corporation

Inventor： Adarsh Chauhan ,  Franck Sala ,  Jayesh Gaur ,  Zeev Sperber ,  Lihu Rappoport ,  Adi Yoaz ,  Sreenivas Subramoney

IPC: G06F9/38 ,  G06F9/30

CPC classification number: G06F9/3806 ,  G06F9/30058 ,  G06F9/30145

Abstract: Systems, methods, and apparatuses relating to hardware for auto-predication of critical branches. In one embodiment, a processor core includes a decoder to decode instructions into decoded instructions, an execution unit to execute the decoded instructions, a branch predictor circuit to predict a future outcome of a branch instruction, and a branch predication manager circuit to disable use of the predicted future outcome for a conditional critical branch comprising the branch instruction.

公开(公告)号：US20220197659A1

公开(公告)日：2022-06-23

申请号：US17133622

申请日：2020-12-23

Applicant: Intel Corporation

Inventor： Jayesh Gaur ,  Adarsh Chauhan ,  Vinodh Gopal ,  Vedvyas Shanbhogue ,  Sreenivas Subramoney ,  Wajdi Feghali

IPC: G06F9/38 ,  G06F9/30

Abstract: Methods and apparatus relating to an Application Programming Interface (API) for fine grained low latency decompression within a processor core are described. In an embodiment, a decompression Application Programming Interface (API) receives an input handle to a data object. The data object includes compressed data and metadata. Decompression Engine (DE) circuitry decompresses the compressed data to generate uncompressed data. The DE circuitry decompress the compressed data in response to invocation of a decompression instruction by the decompression API. The metadata comprises a first operand to indicate a location of the compressed data, a second operand to indicate a size of the compressed data, a third operand to indicate a location to which decompressed data by the DE circuitry is to be stored, and a fourth operand to indicate a size of the decompressed data. Other embodiments are also disclosed and claimed.

公开(公告)号：US11256599B2

公开(公告)日：2022-02-22

申请号：US17128291

申请日：2020-12-21

Applicant: Intel Corporation

Inventor： Adarsh Chauhan ,  Jayesh Gaur ,  Franck Sala ,  Lihu Rappoport ,  Zeev Sperber ,  Adi Yoaz ,  Sreenivas Subramoney

IPC: G06F11/34 ,  G06F11/30 ,  G06F15/78 ,  G06F9/24 ,  G06F9/38

Abstract: A processor comprises a microarchitectural feature and dynamic tuning unit (DTU) circuitry. The processor executes a program for first and second execution windows with the microarchitectural feature disabled and enabled, respectively. The DTU circuitry automatically determines whether the processor achieved worse performance in the second execution window. In response to determining that the processor achieved worse performance in the second execution window, the DTU circuitry updates a usefulness state for a selected address of the program to denote worse performance. In response to multiple consecutive determinations that the processor achieved worse performance with the microarchitectural feature enabled, the DTU circuitry automatically updates the usefulness state to denote a confirmed bad state. In response to the usefulness state denoting the confirmed bad state, the DTU circuitry automatically disables the microarchitectural feature for the selected address for execution windows after the second execution window. Other embodiments are described and claimed.