How V8 executes WASM

WASM Pipeline of V8 javascript engine

Transcript

1. H o w V 8 E x e c u t e W A S M
   

   View Slide

2. Name
   !CSO 5BLFUPTIJ"POP੨໺݈ར
   
   Occupation
   'SPOUFOE%FWFMPQFS1SPEVDU0XOFS
   Company
   $ZCFSBHFOU"EUFDI4UVEJP"*.FTTFOHFS
   OSS
   $POUSJCVUPSPG7
   About
   IUUQJOGPCODI
   

   View Slide

3. 8"4.࣮ߦύε
   

   View Slide

4. 8"4.
   -JGU0⒎
   JBY
   5VSCP'BO
   0UIFST
   5VSCP'BO
   %FCVH
   *OUFSQSFUFS
   

   View Slide

5. -JGUPGG
   8"4.ઐ༻ͷ#BTFMJOFίϯύΠϥ
   8"4.ͷ01ίʔυΛ+*5ʹม׵͢Δ
   ϨδελϚγϯ͕ͩɺ஋ͷϩʔυʹελοΫ΋࢖͏
   Ϩδελׂ෇͸ϦχΞʹߦ͍ɺϨδελ͕ރׇͨ͠ΒTQJMM͠ɺಛʹੜଘظؒ
   ͷ෼ੳ౳͸͍ͯ͠ͳ͍
   9ͱ*"ͷΈσϑΥϧτͰ0/ʹͳ͍ͬͯΔ
   

   View Slide

6. 5VSCP'BO
   7ͷ࠷దԽ+*5༻ύΠϓϥΠϯ
   άϥϑΛੜ੒͔ͯ͠Βɺάϥϑ΁ͷ࠷దԽύΠϓϥΠϯΛ௨Γɺ
   *OTUSVDUJPO4FMFDUPSΛܦͯ+*5ίʔυΛग़ྗ͢Δ
   +BWBTDSJQU΋͜ͷ࠷దԽΛܦͯ+*5ίʔυ͕ग़ྗ͞ΕΔ
   

   View Slide

7. 5VSCP'BO1JQFMJOF
   

   View Slide

8. 8"4.
   %FDPEF
   'VODUJPO#PEZ
   44"
   (SBQI
   0QUJNJ[BUJPO
   QBTT
   4DIFEVMJOH
   3FHJTUFS
   "MMPDBUJPO
   *OTUSVDUJPO
   TFMFDUJPO
   $PEF
   (FOFSBUJPO
   

   View Slide

9. -JGUPGG1JQFMJOF
   

   View Slide

10. 8"4.
    %FDPEF
    'VODUJPO#PEZ
    $PEF
    (FOFSBUJPO
    

    View Slide

11. KBWBTDSJQU1JQFMJOF
    

    View Slide

12. +4
    44"
    (SBQI
    0QUJNJ[BUJPO
    QBTT
    4DIFEVMJOH
    3FHJTUFS
    "MMPDBUJPO
    *OTUSVDUJPO
    TFMFDUJPO
    $PEF
    (FOFSBUJPO
    1BSTF
    "45
    #ZUFDPEF
    (SBQI
    #ZUFDPEF
    

    View Slide

13. -JGUPGG5JFSJOH
    

    View Slide

14. 8"4.
    -JGU0⒎
    &YFDVUFCBTFMJOF+*5
    5VSCP'BO
    *NNFEJBUFMZTUBSUCBDLHSPVOEDPNQJMF
    

    View Slide

15. 5JFSJOH
    -JGUPGGͷ৔߹͸࠷ॳʹ-JGUPGGͰ#BTFMJOF+*5Λग़ྗ࣮ͯ͠ߦ͢Δ
    ͜͏͢Δ͜ͱͰελʔτΞοϓλΠϜͷߴ଎ԽΛߦ͏
    ͞Βʹ8"4.͸+4ͱҧͬͯ੩తʹશͯܕ෇͚͞Ε͍ͯΔͨΊɺ࣮ߦͷ5SBDF
    ΛߦΘͣʹଈ࠷దԽ+*5Λग़ྗ͢Δ͜ͱ͕Ͱ͖Δ
    ͦͷͨΊɺ#BTFMJOFΛੜ੒ͭͭ͠όοΫάϥϯυͰ5VSCP'BOʹΑΔ࠷దԽ
    +*5ͷग़ྗΛಉ࣌ʹߦ͍ͬͯΔ
    

    View Slide

16. *OUFSQSFUFS
    8"4.༻ͷΠϯλϓϦλ࣮૷
    ී௨ʹ࣮ߦͨ͠৔߹ʹ͜ͷύεʹೖΔ͜ͱ͸ͳ͍
    σόοά༻్ͱͯ͠ͷΈଘࡏ͢Δ
    ଎౓͸ͱͯ΋஗͍
    

    View Slide

17. $PEF$BDIJOH
    

    View Slide

18. 5VSCP'BODPEFDBDIJOH
    8"4.ͷίʔυ͸Ұ౓ίϯύΠϧ͞ΕΔͱ$ISPNFʹΑͬͯΩϟογϡ͞Ε
    ͯ࣍ճҎ߱͸ߴ଎Ͱىಈ͢Δ
    

    View Slide

19. 5PFGpDJFOUDBDIJOH
    ʠJOTUBOUJBUF4USFBNJOHʡ͔ʠDPNQJMF4USFBNJOHʡΛར༻͢Δඞཁ͕͋
    Δ
    63-ͱXBTNͷ૊Έ߹ΘͤͰΩϟογϡΛߦ͏ͷͰɺҧ͏63-͔Βϩʔυ
    ͢ΔͷΛ΍ΊΔ
    

    View Slide

20. KBWBTDSJQUͱൺ΂ͯ
    

    View Slide

21. $PEFTJ[F
    ѹॖ͞Εͨ#ZUFDPEFͳͷͰ౰વKBWBTDSJQUͷιʔείʔυΑΓ΋খ͍͞
    ίʔυ಺༰ʹΑΔ͕
    
    

    View Slide

22. 5ZQF'FFECBDL
    KBWBTDSJQU͸ܕ͕ແ͍ͷͰɺCBTFMJOFͰ༷ʑͳܕʹରԠ͢ΔίʔυΛग़ྗ
    ͦͷޙऩू͞Εͨܕ৘ใ͔Βม਺ͷܕΛ༧૝ͯ͠+*5Λग़ྗ͢Δ
    8"4.͸੩తܕ෇͚ͳͷͰɺͦͷաఔΛܦΔඞཁ͕ແ͍
    

    View Slide

23. 4UBUJD0QUJNJ[BUJPO
    8"4.͸ଟ͘ͷ৔߹ɺίϯύΠϥ͔Βग़ྗ͞ΕΔͨΊɺίϯύΠϥͷόοΫ
    Τϯυ͕੩తͳ࠷దԽΛࢪ͢͜ͱ͕Ͱ͖Δ
    +*5ͷλΠϛϯάͰߦ͏࠷దԽ͸࣌ؒΛ͔͚ΒΕͳ͍ͨΊɺߦ͑Δ࠷దԽ͕
    ݶΒΕΔ
    

    View Slide

24. ($
    8"4.ʹ͸($͕ແ͍ͷͰߴ଎ͳׂ౰͕Մೳ
    8"4.ͷϝϞϦ͸+4ͷ"SSBZ#VGGFS͔ΒׂΓ౰ͯΒΕ͍ͯΔ͕ɺׂ౰ͷλΠ
    ϛϯάͰ0MEεϖʔεʹׂΓ౰ͯΔͷͰ+4ͷ($ͷର৅ʹ΋ͳΓͮΒ͍
    

    View Slide

25. ؾʹͳΔ఺
    8"4.͸͔ͳΓMPXMFWFMͳ#ZUFDPEFͳͷͰɺ+7.ͷΑ͏ͳલఏ৚݅Λ΋ͨ
    ͤΒΕͣɺΤϯδϯଆͰͰ͖Δ࠷దԽ͕͔ͳΓݶΒΕͯ͘Δ
    ࣄલͷ࠷దԽ͕ඇৗʹॏཁʹͳͬͯ͠·͍ɺ࢖͏ίϯύΠϥʹੑೳ͕େ͖͘
    ґଘͦ͠͏
    

    View Slide

26. ·ͱΊ
    ΍͸Γ8"4.͸ͱͯ΋ίϯύΠϥϑϨϯυϦʔ
    KBWBTDSJQUͷ࠷దԽύε͸͔ͳΓෳࡶʹݟ͑Δ
    

    View Slide