公开(公告)号：US20210117195A1

公开(公告)日：2021-04-22

申请号：US16658474

申请日：2019-10-21

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： JOHN KALAMATIANOS ,  KRISHNAN V. RAMANI ,  SUSUMU MASHIMO

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.

公开(公告)号：US20210263740A1

公开(公告)日：2021-08-26

申请号：US17238844

申请日：2021-04-23

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： JOHN KALAMATIANOS ,  KRISHNAN V. RAMANI ,  SUSUMU MASHIMO

IPC: G06F9/30 ,  G06F9/35 ,  G06F9/38

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.