SwiftとCPUレジスタ

Transcript

1. SwiftͱCPUϨδελ
   2019/06/24 YUMEMI.swift #1
   @rikusouda
   

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2. ࣗݾ঺հ
   • @rikusouda (٢Ԭ༞थ)
   • גࣜձࣾGunosy
   • ϧʔτϏΞ͕޷͖
   • WWDC19͕ॳWWDC
   

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4. Swiftͱ
   CPUϨδελ
   

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5. ͳͥWWDC͔ΒϨδελͷ࿩?
   • WWDCʹ͸Lab͕͋ΔɻAppleͷΤϯδχΞ
   ʹ࣭໰͕Ͱ͖Δ৔ॴ
   • Swiftؔ࿈ͷLabߦ͖ͬͯͨ
   • ղܾͰ͖ͳ͔ͬͨ͜ͱ͕͋Γɺ೔ຊʹؼͬͯ
   ͖͔ͯΒࣗ෼Ͱௐ΂ͨ
   

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6. CPUϨδελͬͯԿ͚ͩͬ
   • ԋࢉ͢Δͱ͖ʹ࢖͏࡞ۀྖҬ = ൚༻Ϩδελ
   • CPUͷ಺෦ʹ͋ͬͯɺϝΠϯϝϞϦΑΓܻҧ
   ͍ʹૣ͍
   • ͨͩ͠਺ेݸͱ͔ɺ਺͕ݶΒΕ͍ͯΔ
   • Ϩδελʹͳ͍σʔλΛԋࢉ͢Δͱ͖͸ϝΠϯ
   ϝϞϦ͔ΒҰ୴ϩʔυ͢Δ
   

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7. ୊ࡐͷSwiftίʔυ
   

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8. ͜͏͍͏஋ܕͷม਺͸
   ʮελοΫͷϝϞϦྖҬʹ֬อ
   ͞ΕΔʯͱ͍͏ͷ͸༗໊
   ୊ࡐͷSwiftίʔυ
   

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9. ϝΠϯϝϞϦ࢖ΘͣʹϨδελ
   ͚ͩ࢖ͬͨ΄͏͕ޮ཰Α͘ͳ͍
   ͦ͏ͳ͍ͬͯΔ
   ୊ࡐͷSwiftίʔυ
   

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10. LabͰฉ͍ͯΈͨ
    • SwiftͷLabʹͯ
    • A. SwiftίϯύΠϥνʔϜͰ͸୲౰͍ͯ͠ͳ͍ൣғɻ
    LLVMͷਓʹฉ͘ͱΑͦ͞͏
    • LLVMͷLabʹͯ
    • A. Swift͸Θ͔Βͳ͍ɻCݴޠͩͱ͢ΔͱYesɻLLVM
    IRͱ͔ΞηϯϒϥಡΉͱ͍Ζ͍ΖΘ͔ͬͯ໘ന͍Α
    

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11. LLVM IRͱΞηϯϒϥͱ͸
    http://llvm.org/devmtg/2015-10/slides/GroffLattner-SILHighLevelIR.pdf
    

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12. LLVM IRͱΞηϯϒϥͱ͸
    http://llvm.org/devmtg/2015-10/slides/GroffLattner-SILHighLevelIR.pdf
    

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13. LLVM IRݟͯΈΑ͏
    

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14. Swiftίʔυ
    

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15. swiftc -emit-ir -O test.swift > test.ll
    ௨ৗɺϦϦʔεϏϧυ͸࠷ద
    Խ͢ΔͷͰಉ༷ʹ࠷దԽ
    

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17. ࠷దԽ͞Ε͗͢!!
    

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18. Swiftίʔυ
    

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19. Swiftίʔυ
    ϝιουͷࢀরܦ༝ͷݺͼग़͠ʹ͠
    ͯؔ਺ίʔϧ͕ͳ͘ͳΔͷΛආ͚Δ
    

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20. swiftc -emit-ir -O test.swift > test.ll
    

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21. LLVM IRίʔυ(barؔ਺಺)
    

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22. LLVM IRίʔυ(barؔ਺಺)
    ͷؔ਺Λίʔϧ݁͠ՌΛ΁
    GPPؔ਺ͷϙΠϯλ͕ʹೖ͍ͬͯΔ
    

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23. LLVM IRίʔυ(barؔ਺಺)
    ʹΛ଍ͯ͠ɺ໭Γ஋Λʹ
    

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24. LLVM IRίʔυ(barؔ਺಺)
    !MMWNTBEEXJUIPWFSqPXJͷ໭Γ஋
    ߏ଄ମ͔Βܭࢉ݁ՌΛऔΓग़͠ɺ
    ͦΕΛ໭Γ஋ͱͯ͠SFUVSO
    

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25. Α͛͞
    

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26. ೦ͷҝΞηϯϒϥ΋ݟΑ͏

    iPhoneΛ૝ఆ͠ARM64Ͱ
    

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27. xcrun -sdk iphoneos swiftc -
    emit-assembly -O -target arm64-
    apple-ios12.0 test.swift >
    test.s
    ͜ͷίϚϯυ͕ϕετͳͷ͔
    ࣗ৴͕ͳ͍ͷͰϚαΧϦืू
    

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28. ARM64ͷ
    Ξηϯϒϥ
    

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30. Y
    ΛҾ਺ͱͯ͠YʹඈͿ
    Yʹ͸GPPͷΞυϨε͕ೖ͍ͬͯΔ
    
    

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31. ໭Γ஋ Y
    ΛYʹίϐʔ
    

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32. YY
    ϨδελͱϦςϥϧͷՃࢉ
    ϝϞϦΞΫηεͳ͠
    
    

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33. YΛ໭Γ஋ͱͯ͠SFUVSO
    

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34. Swiftͷؔ਺಺ͷInt͸
    ϨδελͰ׬͍݁ͯͨ͠
    

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35. ͜Ε͔Β
    • LLVMίʔυΛݟͯཪ෇͚͕Ͱ͖͍ͯͳ͍ͷͰ
    ΍Γ͍ͨ
    • ↑͜͜·Ͱ΍ͬͯiOSDCͷLTͰ஻Γ͍ͨ
    

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36. ϓϩϙʔβϧʹελʔ͍ͩ͘͞
    • SwiftͷελοΫม਺ͱCPUϨδελͷؔ܎ΛಡΈղ͍ͨ
    • https://fortee.jp/iosdc-japan-2019/proposal/
    c2a89fff-ce66-4821-b2d4-4b7b6ff293d5
    • Swiftͷ஌ࣝΛ࢖ͬͯC++ͷੈքʹඈͼࠐ΋͏
    • https://fortee.jp/iosdc-japan-2019/proposal/
    c39e331a-8c70-42ef-b58e-38f798f40295
    • “rikusouda”Ͱݕࡧ͢Ε͹ग़͖ͯ·͢
    

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37. ·ͱΊ
    • Swiftͷ಺෦ಈ࡞Λ஌Γ͍ͨ৔߹͸தؒίʔυ
    ΛಡΉ͚ͩͰ݁ߏ෼͔Δɻ
    • ໋ྩͷ࢓༷ͱ͔άάΕ͹݁ߏಡΊΔ
    • ίϯύΠϥͷ஌ࣝͳͯ͘΋͜͜·Ͱ͸ߦ͚Δ
    • SwiftͷInt͸ɺҰൠతʹ࠷దԽ͋ΓͳΒ͹Ϩδ
    ελͰ׬݁͢Δ͜ͱ͕Θ͔ͬͨ
    

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