Status: New
Owner: ----
New issue 1758 by [email protected]: Performance penalty when using
integers > 30bit
http://code.google.com/p/v8/issues/detail?id=1758
I'm working with binary strings, consisting of numbers, in JavaScript and
perform extensive binary operations on them. If the numbers operated on are
less or equal 2^30-1 then the speed is quite satisfactory, but if the
numbers are between 2^30 and 2^32-1 it seems to break something inside the
compiler.
0-30bit numbers: 100% Speed
31bit numbers: 65% Speed
32bit numbers: 50% Speed
Testcases are available at: http://jsperf.com/128bit-hamming-distance/5
In contrast, when using Firefox, this phenomenon does not occur.
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