PROCESSOR AND METHODS FOR FLOATING POINT REGISTER ALIASING

摘要

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.