公开(公告)号：US20230315468A1

公开(公告)日：2023-10-05

申请号：US17708318

申请日：2022-03-30

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： ANTHONY JARVIS ,  THOMAS CLOUQUEUR ,  QIAN MA

IPC: G06F9/38 ,  G06F9/30

CPC classification number: G06F9/3806 ,  G06F9/30058

Abstract: Enforcing consistency across redundant tagged geometric (TAGE) branch histories, including: determining, by a TAGE branch predictor, whether a predefined interval has occurred; and storing, in a retirement branch history, in response to the predefined interval occurring, a copy of a global branch history.

公开(公告)号：US20230315475A1

公开(公告)日：2023-10-05

申请号：US17708247

申请日：2022-03-30

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： ANTHONY JARVIS ,  THOMAS CLOUQUEUR

IPC: G06F9/38 ,  G06F9/30

CPC classification number: G06F9/3844 ,  G06F9/30029 ,  G06F9/3804

Abstract: A tagged geometric (TAGE) branch predictor for managing large TAGE branch histories, including: logic that maintains a global branch history including a circular buffer; logic that maintains a plurality of TAGE tables; and logic that maintains a plurality of folded branch histories, wherein each folded branch history of the plurality of folded branch histories corresponds to a TAGE table of the plurality of TAGE tables, wherein the folded branch histories are each based on different length subsets of the global branch history.

公开(公告)号：US20230315469A1

公开(公告)日：2023-10-05

申请号：US17708344

申请日：2022-03-30

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： ANTHONY JARVIS ,  THOMAS CLOUQUEUR

IPC: G06F9/38

CPC classification number: G06F9/3806 ,  G06F9/3869

Abstract: Hybrid parallelized tagged geometric (TAGE) branch prediction, including: selecting, based on a branch instruction, a first plurality of counts from at least one TAGE table; selecting, based on the branch instruction, a second plurality of counts from at least one non-TAGE branch prediction table; generating, based on the first plurality of counts and a second plurality of counts; and wherein selecting the first plurality of counts and selecting the second plurality of counts are performed during a same branch prediction pipeline stage.

公开(公告)号：US20210373896A1

公开(公告)日：2021-12-02

申请号：US16889010

申请日：2020-06-01

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： THOMAS CLOUQUEUR ,  MARIUS EVERS ,  APARNA MANDKE ,  STEVEN R. HAVLIR ,  ROBERT COHEN ,  ANTHONY JARVIS

IPC: G06F9/38 ,  G06F9/48

Abstract: Merging branch target buffer entries includes maintaining, in a branch target buffer, an entry corresponding to first branch instruction, where the entry identifies a first branch target address for the first branch instruction and a second branch target address for a second branch instruction; and accessing, based on the first branch instruction, the entry.