> On Sept. 21, 2012, 9:17 a.m., Nilay Vaish wrote:
> > src/base/addr_range.hh, line 134
> > <http://reviews.gem5.org/r/1429/diff/1/?file=29812#file29812line134>
> >
> >     Why do we need to do this? How many characters are we saving any way?
> 
> Andreas Hansson wrote:
>     The operators are important with the addition of striping. The whole idea 
> is to hide all the checking for interleaving and matching inside the 
> AddrRange and never use the start and end outside of this class. I hope that 
> explains it.
> 
> Nilay Vaish wrote:
>     Andreas, I wrote to you almost three weeks back that I do not like 
> overloading the
>     equality operator for checking whether the address lies in a range. Can 
> you not just
>     create a new function?
> 
> Andreas Hansson wrote:
>     Sure, I'm happy to do either. The equality operator is only there for 
> historical reasons, that is how it has been done up till this very point. 
> Rather than changing all the places where it is used (and it is quite a few) 
> I was happy to know if anyone else sees a need to change it before going and 
> doing so.
> 
> Andreas Hansson wrote:
>     In addition, if we decide to change it, I want to keep it out of this 
> patch. I hope that's ok.
> 
> Nilay Vaish wrote:
>     I am fine with having a separate patch for the change.

Personally, I'm fine with using the operator overloading here.  What problem do 
you have with it specifically?


- Ali


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On Sept. 21, 2012, 9:50 a.m., Andreas Hansson wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> http://reviews.gem5.org/r/1429/
> -----------------------------------------------------------
> 
> (Updated Sept. 21, 2012, 9:50 a.m.)
> 
> 
> Review request for Default.
> 
> 
> Description
> -------
> 
> This patch transitions the bus to use the AddrRange operations instead
> of directly accessing the start and end. The change facilitates the
> move to a more elaborate AddrRange class that also supports address
> striping in the bus by specifying interleaving bits in the ranges.
> 
> Two new functions are added to the AddrRange to determine if two
> ranges intersect, and if one is a subset of another. The bus
> propagation of address ranges is also tweaked such that an update is
> only propagated if the bus received information from all the
> downstream slave modules. This avoids the iteration and need for the
> cycle-breaking scheme that was previously used.
> 
> 
> Diffs
> -----
> 
>   src/base/addr_range.hh 4672c12307a7 
>   src/mem/bus.hh 4672c12307a7 
>   src/mem/bus.cc 4672c12307a7 
> 
> Diff: http://reviews.gem5.org/r/1429/diff/
> 
> 
> Testing
> -------
> 
> util/regress all passing (disregarding t1000 and eio)
> 
> 
> Thanks,
> 
> Andreas Hansson
> 
>

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