公开(公告)号：US20150227372A1

公开(公告)日：2015-08-13

申请号：US14522512

申请日：2014-10-23

Applicant: VIA TECHNOLOGIES, INC.

Inventor： G. GLENN HENRY ,  TERRY PARKS ,  RODNEY E. HOOKER

IPC: G06F9/30 ,  G06F11/07

CPC classification number: G06F9/30145 ,  G06F9/30014 ,  G06F9/30076 ,  G06F9/30185 ,  G06F9/30189 ,  G06F11/0721 ,  G06F11/0793

Abstract: A processor includes a decoder that decodes an instruction that instructs the processor to perform subsequent computations in an approximate manner and a functional unit that performs the subsequent computations in the approximate manner in response to the instruction. An instruction instructs the processor to clear an error amount associated with a value stored in a general purpose register of the processor. The error amount indicates an amount of error associated with a result of a computation performed by the processor in an approximate manner. The processor also clears the error amount in response to the instruction. Another instruction specifies a computation to be performed and includes a prefix that indicates the processor is to perform the computation in an approximate manner. The functional unit performs the computation specified by the instruction in the approximate manner specified by the prefix.

Abstract translation: 一种处理器包括一个译码器，该解码器解码指示处理器以近似方式执行后续计算的指令，以及响应该指令以近似方式执行后续计算的功能单元。 指令指示处理器清除与存储在处理器的通用寄存器中的值相关联的错误量。 错误量表示与处理器以近似的方式执行的计算结果相关联的错误量。 处理器还会根据指令清除错误量。 另一个指令指定要执行的计算，并且包括指示处理器以近似的方式执行计算的前缀。 功能单元以由前缀指定的近似方式执行由指令指定的计算。