公开(公告)号：US20150121040A1

公开(公告)日：2015-04-30

申请号：US14523660

申请日：2014-10-24

Applicant: Advanced Micro Devices, Inc.

Inventor： Robert E. Weidner ,  Jay E. Fleischman ,  Michael C. Sedmak ,  Michael Estlick ,  Richard McGowen, II ,  Emil Talpes

IPC: G06F9/30

CPC classification number: G06F9/3013 ,  G06F9/30036 ,  G06F9/30112 ,  G06F9/3017 ,  G06F9/384

Abstract: Methods, devices, and systems for accessing packed registers are presented. A state of the packed registers may be tracked and it may be determined whether the register is directly accessible based on the state. If the register is not directly accessible, an action may be performed which allows the register to be accessed directly. The action may include injecting at least one uop for reorganizing the physical storage of the register such that it is directly accessible. The action may include aligning the data with the least significant bit of a physical register or otherwise aligning the data with the datapath. The action may also include changing the state of the packed registers.

Abstract translation: 介绍了访问打包寄存器的方法，设备和系统。 可以跟踪打包寄存器的状态，并且可以基于状态确定寄存器是否可直接访问。 如果寄存器不可直接访问，则可以执行允许直接访问寄存器的动作。 该动作可以包括至少注入一个uop来重新组织寄存器的物理存储器，使得它可以直接访问。 该动作可以包括将数据与物理寄存器的最低有效位对准，或者使数据与数据通路对准。 该动作还可以包括改变打包寄存器的状态。