🚀 go-pugleaf

On 18.11.2010 16:44, Piotr B. (pb2004) wrote:
> Tomasz Chmielewski presented the following explanation :
>> http://digitizor.com/2010/11/17/internet-explorer-9-caught-cheating-in-sunspider-benchmark/
>>
>>
>> While Mozilla engineer Rob Sayre was benchmarking Firefox 4 with
>> different browsers, he noticed something with Internet Explorer 9 –
>> Internet Explorer 9 was around 10 times faster than the other browsers
>> in a particular test (math-cordic) in the SunSpider benchmark. While
>> Chrome and Opera scored took around 10ms in that test, Internet
>> Explorer 9 finished it it in about 1ms.
>>
>> Sayre investigated further by modifying the code for that test used in
>> the SunSpider Benchmark a bit. He made two variations of the test
>> little bits of codes to the original – one by adding a “true” and
>> another by adding a “return”. As these “true” and “return” in this
>> context does not do anything there should be minimal impact.
>>
>> The result though is startling – Internet Explorer 9 took around 20
>> times longer with the two new tests compared with the original. While
>> the original took only 1ms in my laptop, the other two took around
>> 20ms each.
>
> Kolejny który nie słyszał o dead code elimination.

Ba, rowniez madrzejsi robiacy analize tego nie slyszeli o dead code 
elimination robiacym eliminacje skomplikowanego kodu, a wywalajacym sie 
na banalnej modyfikacji tegoz.


-- 
Tomasz Chmielewski
http://wpkg.org