Latest producer tracking in an out-of-order processor, and applications thereof
a processor and processor technology, applied in the field of processors, can solve the problems of more complex processors having out-of-order execution pipelines, subject to control, structural and data hazard stalls, and high processing cost, and achieve the effects of improving processing speed, power consumption, and chip area
Inactive Publication Date: 2008-01-17
ARM FINANCE OVERSEAS LTD
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Problems solved by technology
As a result, they are subject to control, structural, and data hazard stalls.
More complex processors have out-of-order execution pipelines.
While custom CAMs and conventional out-of-order processing techniques work for their intended purposes, they are costly to implement in terms of chip area, power consumption, and processing speed.
As a result, especially in the embedded market, the number of applications in which a conventional out-of-order processor may be used is restricted.
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[0024]The present invention provides a processor, system, and method for latest producer tracking in a processor, and applications thereof. In the detailed description of the invention that follows, references to “one embodiment”, “an embodiment”, “an example embodiment”, etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
[0025]FIG. 1 illustrates an example processor 100 according to an embodiment of the present invention. As shown in FIG. 1, ...
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A processor and system for latest producer tracking. In one embodiment, the processor includes an operand renamer circuit that includes a register rename map, a producer tracking circuit that includes a producer tracking map, and a results buffer allocater circuit that includes a results buffer free list. Control logic modifies in-register status values stored in the register rename map based on producer tracking status values stored in the producer tracking map. The producer tracking status values stored in the producer tracking map are modified based on buffer identification values output by the results buffer allocater circuit.
Description
CROSS REFERENCE TO RELATED APPLICATION[0001]This application is related to commonly owned U.S. patent application Ser. No. ______, titled “Method For Latest Producer Tracking In An Out-Of-Order Processor, And Applications Thereof,” filed on the same day herewith (Attorney Docket No. 1778.2370001), which is incorporated herein by reference in its entirety.FIELD OF THE INVENTION[0002]The present invention relates generally to processors and more particularly to processors having an out-of-order execution pipeline.BACKGROUND OF THE INVENTION[0003]Reduced Instruction Set Computer (RISC) processors are well known. RISC processors have instructions that facilitate the use of a technique known as pipelining. Pipelining enables a processor to work on different steps of an instruction at the same time and thereby take advantage of parallelism that exists among the steps needed to execute an instruction. As a result, a processor can execute more instructions in a shorter period of time. Addit...
Claims
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Login to View More IPC IPC(8): G06F9/30
CPCG06F9/30149G06F9/3017G06F9/3857G06F9/384G06F9/30174G06F9/3858G06F9/3854G06F9/3012G06F9/30141
Inventor SVENDSEN, KJELDJIANG, XING YU
Owner ARM FINANCE OVERSEAS LTD