Yes, another fetch shouldn't occur unless the end of the cache line is reached, or a branch to a different cache line occurs.
Ali On Tue, 29 Mar 2011 13:40:03 -0400, Veydan Wu wrote: Seems that the cache line fetched in last cycle would be reused if there are still available instructions there. On Mon, Mar 28, 2011 at 8:04 PM, Veydan Wu wrote: Hi, all. In O3 cpu model, does the fetch unit fetch a new cache line each cycle when it is in Running status, even when the fetch width is changed to 1 or 2, and cache block size is still 64 bytes or bigger? I checked the source code, and found that the fetchCacheLine() function is invoked each cycle when fetchStatus == Running. Does it mean that cache line fetched last cycle will be fetched again even NOT all the instructions have been extracted last tick()? Thanks -- Regards, Veydan -- Regards, Veydan Links: ------ [1] mailto:veyda...@gmail.com
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