5分でわかるかもしれないJSエンジンの歴史

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1. History of Javascript Engine in 5minutes

2. Name @brn (ꫬꅿ⨳ⵃ) Occupation ؿٗٝزؒٝسؒٝآص،٥ط؎ذ؍ـؒٝآص، Company Cyberagent ،سذؙأةآؔ AI Messenger

   OSS Contributor of V8 About http://info.b6n.ch

3. Evolution of engines
   JSؒٝآٝך鹌⻉כְֻאַךأذ٦آחⴓַ׸גֶ׶ծ ➙㔐כ⟃♴ך㹋遤倯䒭חאְג䪔ֲ AST؎ٝة٦فٔة Bytecode؎ٝة٦فٔة Baseline JIT Method

   JIT

4. Interpreter
   ⴱ劍כAST(ا٦أ؝٦سךخٔ٦邌植)׾鴬׏ג㹋遤ׅ׷؎ٝة٦ف ٔة׌׏׋ 鸞䏝ָ鹼ֻծ⡦䏝׮ずׄػأ׾㹋遤ׅ׷׋׭يت׮㢳ְ ׉׸׵ָ鹌⻉׃גBytecode؎ٝة٦فٔةָ㹋鄲ׁ׸׋ Bytecode؎ٝة٦فٔةכ♧傉ا٦أ؝٦س׾㣐ֹזㄏ⟀⴨ח㢌䳔 ׃ג׉׸׾㹋遤ׅ׷VM׾㹋鄲ׅ׷倯䒭
   

5. JIT
   Just In Time Compilerך殛 ؝٦س׾׉ך㜥דط؎ذ؍ـ؝٦سח؝ٝػ؎ٕׅ׷ֿהד넝鸞ז ؝٦س׾㹋遤׾遤ֲ ׋׌׃ծ؝ٝػ؎ٕח儗꟦ַַָ׷׋׭ծぐ珏؎ٝة٦فٔةה إحزחז׏גְ׷ֿהָ㢳ְ
   

6. Simple Interpreters
   ⴱ劍ךJavascriptؒٝآٝ
   

7. SpiderMonkey
   㨣ת׶כ1996䎃ח Netscape Navigator2.0ח䵧鯹ׁ׸׋Spider Monkey ءٝفٕז؎ٝة٦فٔةד֮׶ծ鸞䏝׮鹼ְ
   

8. JScript
   1996䎃ծMozillaח㼎䫑׃גMicrosoftָꟚ涪׃׋ Internet Explorerח䵧鯹ׁ׸׋Javascript Engine Javascriptדכ搀ֻծMicrosoft杝荈ךJScriptהְֲ鎉铂ٓٝة؎ي חז׏גֶ׶ծ䗍㦩ח䭁䓸ׁ׸גְ׷կ COM/OLE♳ח㹋鄲ׁ׸גְ׷ךדծ➭ך،فٔ؛٦ءַّٝ׵׮ ⵃ欽דֹ׋կ
   

9. JavascriptCore(SquirrelFish)
   ׮ה׮כKDEהְֲX Window Systemד⹛⡲ׅ׷،فٔ؛٦ءّٝ أ؎٦زך♧鿇ה׃ג㹋鄲ׁ׸גְ׋ծ Konquerorהְֲـٓؐؠדⵃ欽ׁ׸גְ׋KJS׾׮הח AppleָSafari㹋鄲欽ח何⥜׾遤׏׋ךָJavascriptCoreד֮׷ SquirrelFishהְֲ넝鸞ז؎ٝة٦فٔة׾䵧鯹׃גְ׋

10. JIT egines
    Native؝٦سח؝ٝػ؎ٕ׃ג㹋遤ׅ׷
    

11. Trace Monkey
    SpiderMonkeyח䵧鯹ׁ׸׋JITؒٝآٝ TraceJITהㄎל׸׷ծ؎ٝة٦فٔة٦׾⹛⡲ׇׁגְ׷꟦חمح زأهحز׾䱱׃䔲גגJIT؝ٝػ؎ٕ׾遤ֲؒٝآٝ
    

12. JägerMonkey
    TraceMonkeyכTraceJIT׾遤ֲתדָ⡚鸞׌׏׋׋׭ծك٦أٓ؎ ٝ؝٦س׾MethodJIT׾ⵃ欽׃ג؝ٝػ؎ٕׅ׷״ֲח׃׋ؒٝآ ٝ 暴䗙כCFGך剑黝⻉דכזֻBytecodeך剑黝⻉׾遤ֲֿה ׋׌׃ծ׉ך׋׭Instruction Reordering瘝ך剑黝⻉ָ遤ִזְ

13. Ion Monkey
    JägerMonkeyך䖓竰ؒٝآٝ CFGך⡲䧭ה剑黝⻉ָ遤׻׸׷״ֲחז׏׋ 植㖈ךFirefoxךJITؒٝآٝ
    

14. V8(initial release)
    Google Chromeח䵧鯹ׁ׸גְ׷JSؒٝآٝ 暴䗙כ؎ٝة٦فٔة׾䵧鯹׃גְזְֿהדծ 湫䱸堣唒铂׾欰䧭׃ג㹋遤׃גְ׋ ׉ך׋׭ٔٔ٦أׁ׸׋䔲ⴱכ旗鸞׌׏׋
    

15. V8(Crankshaft)
    JITؒٝآٝך何⥜׾遤ְSSA䕎䒭ך⚥꟦邌植װծ 膴剑黝⻉,OnStackReplacement瘝ךぐ珏剑黝⻉ػ؎فٓ؎ٝ׾䓼⻉ ׃׋׮ך

16. V8(Ignition/TurboFan)
    Bytecode؎ٝة٦فٔة׾䵧鯹ׅ׷ֿהדك٦أٓ؎ٝJITך饯⹛ 儗꟦٥ًٌٔⵃ欽桦׾⡚幾 Bytecodeַ׵ؚٓؿ䕎䒭ך⚥꟦邌植ח㢌䳔ծ剑黝⻉׾遤ֲֿהד➙ תדا٦أ؝٦سַ׵遤׏גְ׋剑黝⻉׾غ؎ز؝٦سַ׵遤ִ׷ ״ֲחז׏׋

17. JavascriptCore(SquirrelFish Extreme)
    SquirrelFish Extremeהㄎל׸׷넝鸞זMethodJIT׾䵧鯹 V8ָCrankshaft׾㹋鄲׃׋ךח㼎䫑׃גDFG JIT׾䵧鯹
    

18. Chakra
    Internet Explorer9ַ׵䵧鯹ׁ׸㨣׭׋倜JSؒٝآٝ ؎ٝة٦فٔةד㹋遤⚥חغحؙؚٓؐٝسד؝ٝػ؎ٕ׾㹋遤ׅ ׷ֿהדJIT؝ٝػ؎ٕך頾蚚׾幾׵׃גְ׷ V8הずׄ״ֲחBytecode׾㹋遤׃גծ׉ך꟦חJIT؝ٝػ؎ٕ׾ 遤׏גְ׷

19. Summary
    5ⴓדכ⿑׃ַ׏׋… ׀幠耮֮׶ָהֲ׀ְׂת׃׋