| 摘要 |
In an embodiment, a processor comprises a data cache and a prefetch unit coupled to the data cache. The prefetch unit is configured to detect one or more prefetch streams corresponding to load operations that miss the data cache, and comprises a memory configured to store data corresponding to potential prefetch streams. The prefetch unit is configured to confirm a prefetch stream in response to N or more demand accesses to addresses in the prefetch stream, where N is a positive integer greater than one and is dependent on a prefetch pattern being detected. The prefetch unit comprises a plurality of stream engines, each stream engine configured to generate prefetches for a different prefetch stream assigned to that stream engine. The prefetch unit is configured to assign the confirmed prefetch stream to one of the plurality of stream engines.
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