Re: git-diff-tree inordinately (O(M*N)) slow on files with many changes

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Davide Libenzi wrote:

> I ended up using this one:
> 
> #define XDL_HASHLONG(v, b) ((((unsigned long) (v) >> ((CHAR_BIT *
sizeof(unsigned long)) - (b))) + \
>                             (unsigned long) (v)) & ((1UL << (b)) - 1))
> 
> The GR_PRIME selection does not make me feel good, and the 'static inline' 
> is puked-over by certain C compilers. It'd be probably fine to just use a 
> simple function, though the above should work just fine.
> 
> real    0m0.665s
> user    0m0.655s
> sys     0m0.010s
> 
> (Opteron 252)

Could you please do and post benchmarks for other solutions?
-- 
Jakub Narebski
Warsaw, Poland
ShadeHawk on #git


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