[PATCH] D41993: [ELF] - Change shift2 constant of GNU_HASH from 6->11.

[George Rimar via llvm-commits]

>> I feel like this change looks a bit too arbitrary. If we can prove that it
>> is in general an improvement, I'm fine with this change, but even George's
>> experiment shows that 11 may not be an optimal number.
>>
>> Probably what we should do is to try different shift2 numbers to see if
>> which one yields the best result on the fly. I'll try to see if this isn't
>> too slow.
>
>Note that his computed score doesn't correlate with performance in all
>cases. In particular I got bad results with 1, but that has a high
>score.
>
>Cheers,
>Rafael

Yeah, it has a high score for test using random symbol names.
I had bad results with 1 when run llvm-check too.

Though the patch which calculates the score with the same algoritm in runtime
worked good for llvm-check. I did not check which values it normally selects for llvm case.

George.