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 <[email protected]> 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
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