公开(公告)号：US11550588B2

公开(公告)日：2023-01-10

申请号：US16109195

申请日：2018-08-22

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： John Kalamatianos ,  Adithya Yalavarti ,  Varun Agrawal ,  Subhankar Pal ,  Vinesh Srinivasan

IPC: G06F9/38 ,  G06F11/34 ,  G06F1/32 ,  G06F1/3287

Abstract: A branch predictor of a processor includes one or more prediction structures, including a predicted branch address and predicted branch direction, that identify predicted branches. To reduce power consumption, the branch predictor selects one or more of the prediction structures that are not expected to provide useful branch prediction information and filters the selected structures such that the filtered structures are not used for branch prediction. The branch predictor thereby reduces the amount of power used for branch prediction without substantially reducing the accuracy of the predicted branches.