Status: New
Owner: ----
New issue 3277 by [email protected]: Slow compilation of multiple
disjunction regexp
http://code.google.com/p/v8/issues/detail?id=3277
On my macbook pro, the following snippet takes 320us in chrome (V8
3.25.28.12), but only 6us in firefox (version 28). WAI? This is a
simplified test case of a hotspot only occurring in chrome.
RegExp("aero|asia|biz|cat|com|coop|info|int|jobs|mobi|museum|name|net|org|
post|pro|tel|travel|xxx|edu|gov|mil|ac|ad|ae|af|ag|ai|al|am|an|ao|aq|ar|as|
at|au|aw|ax|az|ba|bb|bd|be|bf|bg|bh|bi|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|
cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|cr|cs|cu|cv|cx|cy|cz|dd|de|dj|dk|dm|do|dz|
ec|ee|eg|eh|er|es|et|eu|ext|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gg|gh|gi|gl|gm|
gn|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|im|in|io|iq|ir|is|it|
je|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|
ly|ma|mc|md|me|mg|mh|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|mv|mw|mx|my|mz|na|nc|
ne|nf|ng|ni|nl|no|np|nr|nu|nz|om|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|ps|pt|pw|py|
qa|re|ro|rs|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|sk|sl|sm|sn|so|sr|ss|st|su|sv|
sx|sy|sz|tc|td|tf|tg|th|tj|tk|tl|tm|tn|to|tp|tr|tt|tv|tw|tz|txt|ua|ug|uk|us|
uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|ye|yt|yu|za|zm|zw").test("");
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