4 ms·V8, SpiderMonkey, and jsc also all have regular expression JITs.by simonster 13y agoV8, SpiderMonkey, and jsc also all have regular expression JITs.cglace 13y agoI believe pypy also has a regex jit.kingkilr 13y agoYup we do.bdash 13y agoSpiderMonkey uses JavaScriptCore's regular expression JIT, YARR (Yet Another RegExp Runtime).