公开(公告)号：US10579414B2

公开(公告)日：2020-03-03

申请号：US15477064

申请日：2017-04-01

Applicant: Intel Corporation

Inventor： Niranjan K. Soundararajan ,  Saurabh Gupta ,  Sreenivas Subramoney ,  Rahul Pal ,  Ragavendra Natarajan ,  Daniel Deng ,  Jared W. Stark ,  Ronak Singhal ,  Hong Wang

IPC: G06F9/38 ,  G06F9/46

Abstract: Embodiments of apparatuses, methods, and systems for misprediction-triggered local history-based branch prediction are described. In one embodiments, an apparatus includes a current pattern table and a local pattern table. The current pattern table has a plurality of entries, each entry in which to store a plurality of pattern lengths of a current pattern of one of a plurality of branch instructions. The local pattern table is to provide a first branch prediction based on the current pattern.

公开(公告)号：US20180349144A1

公开(公告)日：2018-12-06

申请号：US15614757

申请日：2017-06-06

Applicant: Intel Corporation

Inventor： Rahul Pal ,  Ragavendra Natarajan ,  Niranjan K. Soundararajan ,  Sreenivas Subramoney ,  Daniel Deng ,  Jared Warner Stark, IV ,  Hong Wang ,  Ronak Singhal

IPC: G06F9/38

Abstract: In one embodiment, a processor comprises a branch predictor to generate, in association with a program loop, a frozen history vector comprising a snapshot of a branch history vector; track a current iteration of the program loop; and provide a prediction for a branch instruction associated with the program loop, the prediction based on the frozen history vector and the current iteration of the program loop.

公开(公告)号：US20180285115A1

公开(公告)日：2018-10-04

申请号：US15477064

申请日：2017-04-01

Applicant: Intel Corporation

Inventor： Niranjan K. Soundararajan ,  Saurabh Gupta ,  Sreenivas Subramoney ,  Rahul Pal ,  Ragavendra Natarajan ,  Daniel Deng ,  Jared W. Stark ,  Ronak Singhal ,  Hong Wang

IPC: G06F9/38 ,  G06F9/30 ,  G06F9/46

CPC classification number: G06F9/46 ,  G06F9/3848

Abstract: Embodiments of apparatuses, methods, and systems for misprediction-triggered local history-based branch prediction are described. In one embodiments, an apparatus includes a current pattern table and a local pattern table. The current pattern table has a plurality of entries, each entry in which to store a plurality of pattern lengths of a current pattern of one of a plurality of branch instructions. The local pattern table is to provide a first branch prediction based on the current pattern.