Π Firefox wopanga JIT wosinthidwa, Kodi WarpBuilder. Kuti mutsegule JIT yatsopano, njira ya "javascript.options.warp" imaperekedwa mu about:config.
Zadziwika kuti WarpBuilder ndi gawo loyamba lokhalo lophatikizira kukhathamiritsa kwatsopano mu msakatuli, zomwe zikuyembekezeka kukhazikitsidwa chaka chamawa.
JIT yatsopanoyo imathandizira magwiridwe antchito a injini ya SpiderMonkey JavaScript pochepetsa zambiri zamtundu wamkati zomwe zimatsatiridwa mkati mwa injiniyo komanso pogwiritsa ntchito njira ya Intermediate Code Caching (CacheIR) m'mbuyomu. mu "baseline" womasulira wa bytecode, yemwe amakhala ndi kagawo kakang'ono pakati pa womasulira wokhazikika ndi wophatikiza pre-JIT. Zosinthazi zidapangitsa kuti zitheke kufewetsa kamangidwe ka JIT, kuwonjezera kuyankha, kuchepetsa nthawi yotsegula masamba ndikuchepetsa kukumbukira kukumbukira.
kuti JIT yatsopano idathetsa mavuto ambiri a JIT IonBuilder yakale, monga:
- Kuvuta kwa kukhazikitsa ndi mavuto omwe angakhalepo achitetezo;
- Zowonjezera zowonjezera pamakhodi a Baseline/C++;
- Kukhazikika kopitilira muyeso kumabweretsa kubweza kosafunikira;
- Kupanga code yapakatikati (Middle-level IR) mu ulusi waukulu (mu WarpBuilder, msonkhano waukulu wa code wapakatikati umayikidwa mu ulusi wosiyana);
- Kugwiritsa ntchito kukumbukira kowonjezera posungira zambiri zamitundu ndi magulu azinthu (ObjectGroups).
Pa avareji, pamayesero omwe amayesa magwiridwe antchito potengera zowonera, kuthamanga kwa 5-15% kumawonedwa mukamagwiritsa ntchito WarpBuilder. Kuchuluka kwa mayeso a Speedometer kudakwera ndi 10%. Kuyesa pamasamba enieni kunawonetsa kuchepa kwa nthawi yotsegula ya Google Docs ndi , index potsegula gawo la Android pa Reddit bwino ndi , pdfpaint inayamba kugwira ntchito mofulumira . Kugwiritsa ntchito kukumbukira muyeso yatsika ndi 8%. ziwerengero mu zida zopangira mapulogalamu (devtools perf) zidawonetsanso kuchepa kwa 8% pakugwiritsa ntchito kukumbukira.
Source: opennet.ru