公开(公告)号：US11567554B2

公开(公告)日：2023-01-31

申请号：US15837918

申请日：2017-12-11

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： Jay Fleischman ,  Michael Estlick ,  Michael Christopher Sedmak ,  Erik Swanson ,  Sneha V. Desai

IPC: G06F1/32 ,  G06F1/324 ,  G06F9/38 ,  G06F13/38 ,  G06F9/30

Abstract: A pipeline includes a first portion configured to process a first subset of bits of an instruction and a second portion configured to process a second subset of the bits of the instruction. A first clock mesh is configured to provide a first clock signal to the first portion of the pipeline. A second clock mesh is configured to provide a second clock signal to the second portion of the pipeline. The first and second clock meshes selectively provide the first and second clock signals based on characteristics of in-flight instructions that have been dispatched to the pipeline but not yet retired. In some cases, a physical register file is configured to store values of bits representative of instructions. Only the first subset is stored in the physical register file in response to the value of the zero high bit indicating that the second subset is equal to zero.

公开(公告)号：US11709681B2

公开(公告)日：2023-07-25

申请号：US15837974

申请日：2017-12-11

Applicant: ADVANCED MICRO DEVICES, INC.

Inventor： Jay Fleischman ,  Michael Estlick ,  Michael Christopher Sedmak ,  Erik Swanson ,  Sneha V. Desai

IPC: G06F9/38

CPC classification number: G06F9/3867 ,  G06F9/3836

Abstract: A coprocessor such as a floating-point unit includes a pipeline that is partitioned into a first portion and a second portion. A controller is configured to provide control signals to the first portion and the second portion of the pipeline. A first physical distance traversed by control signals propagating from the controller to the first portion of the pipeline is shorter than a second physical distance traversed by control signals propagating from the controller to the second portion of the pipeline. A scheduler is configured to cause a physical register file to provide a first subset of bits of an instruction to the first portion at a first time. The physical register file provides a second subset of the bits of the instruction to the second portion at a second time subsequent to the first time.