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5分でわかるかもしれないJSエンジンの歴史
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Taketoshi Aono(青野健利 a.k.a brn)
June 26, 2018
Programming
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5分でわかるかもしれないJSエンジンの歴史
5分でわかるかもしれない(わからない)JSエンジンの歴史です
Taketoshi Aono(青野健利 a.k.a brn)
June 26, 2018
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Transcript
History of Javascript Engine in 5minutes
Name @brn (ꫬꅿ⨳ⵃ) Occupation ؿٗٝزؒٝسؒٝآص،٥ط؎ذ؍ـؒٝآص، Company Cyberagent ،سذؙأةآؔ AI Messenger
OSS Contributor of V8 About http://info.b6n.ch
Evolution of engines JSؒٝآٝך鹌⻉כְֻאַךأذ٦آחⴓַגֶծ ➙㔐כ⟃♴ך㹋遤倯䒭חאְג䪔ֲ AST؎ٝة٦فٔة Bytecode؎ٝة٦فٔة Baseline JIT Method
JIT
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
JIT Just In Time Compilerך殛 ؝٦سך㜥דط؎ذ؍ـ؝٦سח؝ٝػ؎ֿٕׅהד넝鸞ז ؝٦س㹋遤遤ֲ ׃ծ؝ٝػ؎ٕח儗ַַָծぐ珏؎ٝة٦فٔةה إحزחזגְֿהָ㢳ְ
Simple Interpreters ⴱ劍ךJavascriptؒٝآٝ
SpiderMonkey 㨣תכ1996䎃ח Netscape Navigator2.0ח䵧鯹ׁSpider Monkey ءٝفٕז؎ٝة٦فٔةד֮ծ鸞䏝鹼ְ
JScript 1996䎃ծMozillaח㼎䫑׃גMicrosoftָ涪׃ Internet Explorerח䵧鯹ׁJavascript Engine Javascriptדכ搀ֻծMicrosoft杝荈ךJScriptהְֲ鎉铂ٓٝة؎ي חזגֶծ䗍㦩ח䭁䓸ׁגְկ COM/OLE♳ח㹋鄲ׁגְךדծ➭ך،فٔ؛٦ءַّٝ ⵃ欽דֹկ
JavascriptCore(SquirrelFish) הכKDEהְֲX Window Systemד⹛⡲ׅ،فٔ؛٦ءّٝ أ؎٦زך♧鿇ה׃ג㹋鄲ׁגְծ Konquerorהְֲـٓؐؠדⵃ欽ׁגְKJSהח AppleָSafari㹋鄲欽ח何⥜遤ךָJavascriptCoreד֮ SquirrelFishהְֲ넝鸞ז؎ٝة٦فٔة䵧鯹׃גְ
JIT egines Native؝٦سח؝ٝػ؎ٕ׃ג㹋遤ׅ
Trace Monkey SpiderMonkeyח䵧鯹ׁJITؒٝآٝ TraceJITהㄎלծ؎ٝة٦فٔة٦⹛⡲ׇׁגְחمح زأهحز䱱׃䔲גגJIT؝ٝػ؎ٕ遤ֲؒٝآٝ
JägerMonkey TraceMonkeyכTraceJIT遤ֲתדָ⡚鸞ծك٦أٓ؎ ٝ؝٦سMethodJITⵃ欽׃ג؝ٝػ؎ٕׅ״ֲח׃ؒٝآ ٝ 暴䗙כCFGך剑黝⻉דכזֻBytecodeך剑黝⻉遤ֲֿה ׃ծךInstruction Reordering瘝ך剑黝⻉ָ遤ִזְ
Ion Monkey JägerMonkeyך䖓竰ؒٝآٝ CFGך⡲䧭ה剑黝⻉ָ遤״ֲחז 植㖈ךFirefoxךJITؒٝآٝ
V8(initial release) Google Chromeח䵧鯹ׁגְJSؒٝآٝ 暴䗙כ؎ٝة٦فٔة䵧鯹׃גְזְֿהדծ 湫䱸堣唒铂欰䧭׃ג㹋遤׃גְ ךٔٔ٦أׁ䔲ⴱכ旗鸞
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
V8(Ignition/TurboFan) Bytecode؎ٝة٦فٔة䵧鯹ֿׅהדك٦أٓ؎ٝJITך饯⹛ 儗٥ًٌٔⵃ欽桦⡚幾 Bytecodeַؚٓؿ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
JavascriptCore(SquirrelFish Extreme) SquirrelFish Extremeהㄎל넝鸞זMethodJIT䵧鯹 V8ָCrankshaft㹋鄲׃ךח㼎䫑׃גDFG JIT䵧鯹
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׃גծךחJIT؝ٝػ؎ٕ 遤גְ
Summary 5ⴓדכ⿑׃ַ… ׀幠耮ָ֮הֲ׀ְׂת׃