Hi again,

On Sat, 15 May 2010, Igor Stasenko wrote:

> added implementation into examples package:
> http://www.squeaksource.com/NativeBoost/NativeBoost-Examples-Igor.Stasenko.1.mcz

just tried to run the following code:

'foo' asWideString nbHash

but I get an assertion failure at this line:
imul: ESI with: 16r260D;  " 16r260D * low "
The code generator is unhappy about ESI. In
AJInstructionDescription >> #emitimul:operand1:operand2:operand3:
There's an assertion:
self assert: op1 isRegTypeGPW.
If I just press proceed, it will be unhappy with the other two 
registers passed to #imul:with:, but the code compiles and works, so 
probably the assertion is wrong.


Levente

>
> On 15 May 2010 01:14, Igor Stasenko <siguctua at gmail.com> wrote:
>> I implemented WideString hash in NB.
>>
>> |s|
>> s := WideString with: (Character value: 16r55E4).
>> [100000000 timesRepeat: [s hash]] timeToRun. 155718
>>
>>
>> |s|
>> s := WideString with: (Character value: 16r55E4).
>> [100000000 timesRepeat: [s nbHash]] timeToRun.  81231
>>
>> Which makes me think, that we're benching the outer loop, rather then
>> hash function itself :)
>>
>> So, here is more appropriate , i think:
>>
>> |s t1 t2 |
>> s := (WideString with: (Character value: 16r55E4)) , 'abcdefghijklmno'.
>> 10 timesRepeat: [ s := s , s ].
>> self assert: (s hash = s nbHash).
>> t1 := [1000 timesRepeat: [s hash]] timeToRun.
>> t2 := [1000 timesRepeat: [s nbHash]] timeToRun.
>>
>> { t1. t2 }
>>  #(11479 134)
>>
>> ~ 85x faster :)
>>
>>
>> --
>> Best regards,
>> Igor Stasenko AKA sig.
>>
>
>
>
> -- 
> Best regards,
> Igor Stasenko AKA sig.
>
>