Address-based filtering for load/store speculation

Patent · Tue May 09 00:00:00 EDT 2023

OSTI ID:1998359

Kalamatianos, John; Ramani, Krishnan V.; Mashimo, Susumu

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.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Advanced Micro Devices, Inc., Santa Clara, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC52-07NA27344; B620717
• Assignee: Advanced Micro Devices, Inc. (Santa Clara, CA)
• Patent Number(s): 11,645,073
• Application Number: 17/238,844
• OSTI ID: 1998359
• Resource Relation: Patent File Date: 04/23/2021
• Country of Publication: United States
• Language: English