Invention Grant
- Patent Title: Reduction of data cache access in a processing system
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Application No.: US16368536Application Date: 2019-03-28
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Publication No.: US11620133B2Publication Date: 2023-04-04
- Inventor: Vignyan Reddy Kothinti Naresh
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent Edward J. Meisarosh
- Main IPC: G06F9/30
- IPC: G06F9/30 ; G06F9/38 ; G06F9/48

Abstract:
Systems and methods for reusing load instructions by a processor without accessing a data cache include a load store execution unit (LSU) of the processor, the LSU being configured to determine if a prior execution of a first load instruction loaded data from a first cache line of the data cache and determine if a current execution of the second load instruction will load the data from the first cache line of the data cache. Further, the LSU also determines if a reuse of the data from the prior execution of the first load instruction for the current execution of the second load instruction will lead to functional errors. If there are no functional errors, the data from the prior execution of the first load instruction is reused for the current execution of the second load instruction, without accessing the data cache for the current execution of the second load instruction.
Public/Granted literature
- US20200310814A1 REDUCTION OF DATA CACHE ACCESS IN A PROCESSING SYSTEM Public/Granted day:2020-10-01
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