- Patent Title: Data cache virtual hint way prediction, and applications thereof
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Application No.: US15467661Application Date: 2017-03-23
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Publication No.: US10430340B2Publication Date: 2019-10-01
- Inventor: Meng-Bing Yu , Era K. Nangia , Michael Ni
- Applicant: ARM Finance Overseas Limited
- Applicant Address: GB Cambridge
- Assignee: ARM Finance Overseas Limited
- Current Assignee: ARM Finance Overseas Limited
- Current Assignee Address: GB Cambridge
- Agency: Patterson Thuente Pedersen, P.A.
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G06F13/00 ; G06F12/0862 ; G06F12/0864

Abstract:
A virtual hint based data cache way prediction scheme, and applications thereof. In an embodiment, a processor retrieves data from a data cache based on a virtual hint value or an alias way prediction value and forwards the data to dependent instructions before a physical address for the data is available. After the physical address is available, the physical address is compared to a physical address tag value for the forwarded data to verify that the forwarded data is the correct data. If the forwarded data is the correct data, a hit signal is generated. If the forwarded data is not the correct data, a miss signal is generated. Any instructions that operate on incorrect data are invalidated and/or replayed.
Public/Granted literature
- US20170192894A1 DATA CACHE VIRTUAL HINT WAY PREDICTION, AND APPLICATIONS THEREOF Public/Granted day:2017-07-06
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