Invention Grant
- Patent Title: Address-based filtering for load/store speculation
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Application No.: US16658474Application Date: 2019-10-21
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Publication No.: US10990393B1Publication Date: 2021-04-27
- Inventor: John Kalamatianos , Krishnan V. Ramani , Susumu Mashimo
- Applicant: ADVANCED MICRO DEVICES, INC.
- Applicant Address: US CA Santa Clara
- Assignee: ADVANCED MICRO DEVICES, INC.
- Current Assignee: ADVANCED MICRO DEVICES, INC.
- Current Assignee Address: US CA Santa Clara
- Main IPC: G06F9/30
- IPC: G06F9/30 ; G06F9/38 ; G06F9/35

Abstract:
Address-based filtering for load/store speculation includes maintaining a filtering table including table entries associated with ranges of addresses; in response to receiving an ordering check triggering transaction, querying the filtering table using a target address of the ordering check triggering transaction to determine if an instruction dependent upon the ordering check triggering transaction has previously been generated a physical address; and in response to determining that the filtering table lacks an indication that the instruction dependent upon the ordering check triggering transaction has previously been generated a physical address, bypassing a lookup operation in an ordering violation memory structure to determine whether the instruction dependent upon the ordering check triggering transaction is currently in-flight.
Public/Granted literature
- US20210117195A1 ADDRESS-BASED FILTERING FOR LOAD/STORE SPECULATION Public/Granted day:2021-04-22
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