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Method and system for expanding a conditional instruction into a unconditional instruction and a select instruction

A technology of conditional instructions and selection instructions, which is applied in the field of computer systems and can solve problems such as the impact of processor efficiency

Inactive Publication Date: 2010-03-31
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, processor efficiency may be affected

Method used

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  • Method and system for expanding a conditional instruction into a unconditional instruction and a select instruction
  • Method and system for expanding a conditional instruction into a unconditional instruction and a select instruction
  • Method and system for expanding a conditional instruction into a unconditional instruction and a select instruction

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Embodiment Construction

[0021] The detailed description set forth below in conjunction with the accompanying drawings is intended as a description of various embodiments of the invention and is not intended to represent the only embodiments in which the invention may be practiced. The detailed description includes specific details to provide a thorough understanding of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form in order not to obscure the concepts of the invention. Acronyms and other descriptive terms may be used merely for convenience and clarity and are not intended to limit the scope of the invention.

[0022] figure 1 A high-level view of a superscalar processor 100 utilizing one embodiment of the invention as described below is presented. Processor 100 has a central processing unit (CPU) 102 coupled to a...

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Abstract

A method of expanding a conditional instruction having a plurality of operands within a pipeline processor is disclosed. The method identifies the conditional instruction prior to an issue stage and determines if the plurality of operands exceeds a predetermined threshold. The method expands the conditional instruction into a non-conditional instruction and a select instruction. The method furtherexecutes the non-conditional instruction and the select instruction in separate pipelines.

Description

technical field [0001] The present invention relates generally to computer systems and, more particularly, to a method and system for extending conditional instructions to non-conditional instructions and selection instructions. Background technique [0002] A processor pipeline consists of many stages, where each stage performs a specific function associated with an instruction. Each level is called a pipe level or pipe section. The stages are connected together to form a pipeline. Instructions enter at one end of the pipeline and exit at the other end. Instructions flow sequentially in a stream through the pipeline stages. The stages are arranged such that several stages can process instructions simultaneously. Processing multiple instructions at different pipeline stages simultaneously allows the processor to process instructions faster than processing one instruction at a time, thereby improving the execution speed of the processor. [0003] Within a processor, ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/318G06F9/30G06F9/32
CPCG06F9/382G06F9/30072G06F9/3016G06F9/3017G06F9/3824G06F9/30145
Inventor 塞雷娜·巴德兰-洛萨罗德尼·韦恩·史密斯迈克尔·斯科特·迈克勒瓦伊内
Owner QUALCOMM INC
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