JIT JS for Odyssey
  • Paladin of the Pegasos
    Paladin of the Pegasos
    Yasu
    Posts: 1724 from 2012/3/22
    From: Stockholm, Sweden
    @bigfoot

    A great thank you for all your work! So, would I be wrong to think that with this JIT in place, OWB would load for example Youtube about as fast as any other modern browser? If so, that would be amazing! :-D
    AMIGA FORUM - Hela Sveriges Amigatidning!
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  • »16.05.14 - 13:01
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  • MorphOS Developer
    bigfoot
    Posts: 508 from 2003/4/11
    I can't really say how any specific website is going to perform when the JIT is ready.
    I rarely log in to MorphZone which means that I often miss private messages sent on here. If you wish to contact me, please email me at [username]@asgaard.morphos-team.net, where [username] is my username here on MorphZone.
  • »16.05.14 - 13:37
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  • MorphOS Developer
    bigfoot
    Posts: 508 from 2003/4/11
    And a slightly more complicated demo, Tearable Cloth, now works in OWB-JIT.
    I rarely log in to MorphZone which means that I often miss private messages sent on here. If you wish to contact me, please email me at [username]@asgaard.morphos-team.net, where [username] is my username here on MorphZone.
  • »17.05.14 - 20:23
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  • Yokemate of Keyboards
    Yokemate of Keyboards
    takemehomegrandma
    Posts: 2720 from 2003/2/24
    Quote:

    bigfoot wrote:
    And a slightly more complicated demo, Tearable Cloth, now works in OWB-JIT.


    Cool! :-)

    Nice of you to report the progress, keep it coming!

    :-)
    MorphOS is Amiga done right! :-)
    MorphOS NG will be AROS done right! :-)
  • »17.05.14 - 20:56
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  • Acolyte of the Butterfly
    Acolyte of the Butterfly
    sabbate
    Posts: 110 from 2013/7/7
    From: Palermo - Italia
    congratulations I hope you can finish early, I would like to see if I can push a lot of my g4 350 mhz
  • »04.06.14 - 17:07
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  • MorphOS Developer
    bigfoot
    Posts: 508 from 2003/4/11
    Well, I've got enough Webkit issues fixed now that I can browse Morphzone (and write this comment) with JIT enabled!
    I rarely log in to MorphZone which means that I often miss private messages sent on here. If you wish to contact me, please email me at [username]@asgaard.morphos-team.net, where [username] is my username here on MorphZone.
  • »13.06.14 - 12:19
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  • MorphOS Developer
    bigfoot
    Posts: 508 from 2003/4/11
    I don't want to make any more promises that I can't keep, but at this rate it is indeed looking good. However, keep in mind that while Morphzone loads, most other sites I've thrown at it still crash, so there's plenty of things to debug still.

    Also, this is only the first level ("baseline") JIT, which isn't that much faster than the interpreter. I haven't started work on the second level ("DFG") yet, which will no doubt have its own set of problems to figure out.
    I rarely log in to MorphZone which means that I often miss private messages sent on here. If you wish to contact me, please email me at [username]@asgaard.morphos-team.net, where [username] is my username here on MorphZone.
  • »13.06.14 - 14:17
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  • MorphOS Developer
    bigfoot
    Posts: 508 from 2003/4/11
    Another site now loads without crashing

    However, with my current level of debug output, it was too slow to really try any of the functionality. Loading the front page generated 130MB of debug output.
    I rarely log in to MorphZone which means that I often miss private messages sent on here. If you wish to contact me, please email me at [username]@asgaard.morphos-team.net, where [username] is my username here on MorphZone.
  • »13.06.14 - 14:40
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  • Acolyte of the Butterfly
    Acolyte of the Butterfly
    naTmeg
    Posts: 135 from 2004/2/8
    Quote:

    Loading the front page generated 130MB of debug output.


    Sounds like fun, wish i could be there ;)
  • »13.06.14 - 15:56
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  • Leo
  • Order of the Butterfly
    Order of the Butterfly
    Leo
    Posts: 417 from 2003/8/18
    Any progress?
    Nothing hurts a project more than developers not taking the time to let their community know what is going on.
  • »18.09.14 - 08:20
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  • Order of the Butterfly
    Order of the Butterfly
    kriz
    Posts: 309 from 2005/10/18
    From: No(R)way
    Looking forward to this , great work bigfoot !!
    MacMiniG4 MOS 3.18 rulez ... For music check: Horrordelic Records - Dark Psychedelic Music Since 2011 -
  • »19.09.14 - 01:35
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  • MorphOS Developer
    bigfoot
    Posts: 508 from 2003/4/11
    Unfortunately there's no tangible progress to report at this moment. I'm currently moving to a new home, and it'll probably be a week or two before I can really get back to working on OWB.

    Sorry again for all the delays.
    I rarely log in to MorphZone which means that I often miss private messages sent on here. If you wish to contact me, please email me at [username]@asgaard.morphos-team.net, where [username] is my username here on MorphZone.
  • »20.09.14 - 06:55
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  • Priest of the Order of the Butterfly
    Priest of the Order of the Butterfly
    eliot
    Posts: 564 from 2004/4/15
    BTW What happens to your patches for webkit and java script interpreter?
    Are they commited to the official trunk?
    regards
    eliot
  • »20.09.14 - 07:38
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  • Just looking around
    Posts: 5 from 2014/9/29
    Did you know that at the time development of JavaScript JIT for OWB was started there already existed a working MacroAssembler for JSC? (I had ported it from TenFourFox to WebKit.)
    However I did never try to get the JavaScript JIT working (backporting of whole WebKit is keeping me busy enough) using that assembler but YarrJIT (regular expressions) is working well using it.
    Unfortunately I didn't know of a way to get in contact with bigfoot, until now - I'd really like to port this to Leopard WebKit (mainly targetted at PowerPC OS X 10.5).

    Please keep me updated in the progress of this - I'm also willing to cooperate in order to get this fully working in the not too distant future.
  • »01.10.14 - 19:34
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  • Yokemate of Keyboards
    Yokemate of Keyboards
    Andreas_Wolf
    Posts: 12089 from 2003/5/22
    From: Germany
    > at the time development of JavaScript JIT for OWB was started there already existed
    > a working MacroAssembler for JSC [...] (I had ported it from TenFourFox to WebKit.)
    > However I did never try to get the JavaScript JIT working [...] using that assembler but
    > YarrJIT (regular expressions) is working well using it.

    I remember the author of Odyssey talking about this here on MorphZone.

    > I'm also willing to cooperate in order to get this fully working in the not too distant future.

    That's a nice offer and I hope bigfoot can make use of it coming from a skilled person like you. And btw, thanks for fixing LLInt for 32-bit big endian.
  • »01.10.14 - 21:56
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  • MorphOS Developer
    bigfoot
    Posts: 508 from 2003/4/11
    Quote:

    internetzel wrote:
    Did you know that at the time development of JavaScript JIT for OWB was started there already existed a working MacroAssembler for JSC? (I had ported it from TenFourFox to WebKit.)
    However I did never try to get the JavaScript JIT working (backporting of whole WebKit is keeping me busy enough) using that assembler but YarrJIT (regular expressions) is working well using it.
    Unfortunately I didn't know of a way to get in contact with bigfoot, until now - I'd really like to port this to Leopard WebKit (mainly targetted at PowerPC OS X 10.5).


    The problem is not implementing the macro assembler... That was the easy part of this project :) The problem is that Webkit's JIT engine heavily depends on the machine it runs on being little endian. This dependency/assumption is embedded so deep into JSC that 90% of my time has been spent on fixing/working around this.

    As an example, Webkit has a structure that looks something like this:

    Code:

    union EndianFucked
    {
    double DoubleValue;
    int IntegerValue;
    };


    Then when accessing IntegerValue, it expects to get the lower half of DoubleValue. The JIT engine itself also expects this layout - it assumes that at a 32 pointer to a Javascript value lies the lower half of a 64 bit value, often in ways that are difficult or impossible to detect automatically. Which means I've spent a lot of time running websites, watch the generated code crash, generate hundreds of MB of debug logs over serial, spotting where it could look like that values got swapped, try to figure out where that happened in the JIT generator, and so on.

    This is also why this project is as delayed as it is. When I initially looked at it, it looked like I "just" had to implement a PPC code generator to get this working - but it turned out that that part would be less than 10% of the final project. Fixing these endian issues in Webkit is what keeps me busy.

    [ Edited by bigfoot 02.10.2014 - 03:46 ]
    I rarely log in to MorphZone which means that I often miss private messages sent on here. If you wish to contact me, please email me at [username]@asgaard.morphos-team.net, where [username] is my username here on MorphZone.
  • »02.10.14 - 05:46
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  • Order of the Butterfly
    Order of the Butterfly
    Posts: 165 from 2004/11/18
    Bigfoot many thanks for your incredible work on this project, you're the best pizza coder for sure ;-)
  • »02.10.14 - 22:33
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  • Priest of the Order of the Butterfly
    Priest of the Order of the Butterfly
    Cego
    Posts: 712 from 2006/5/28
    From: Germany
    hey bigfoot! is there any progress on this?

    thanks for your hard work!
    Pegasos II G4 @1.0GHz, 1GB DDR Ram, Radeon 9200Pro, 240GB SSD+160GB HD, MorphOS 3.18, AmigaOS4.1 FE, Debian 8
  • »02.03.15 - 00:40
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  • Priest of the Order of the Butterfly
    Priest of the Order of the Butterfly
    tolkien
    Posts: 502 from 2013/5/29
    No pressures but how is It going? Any advance? Thanks!
    MorphOS: PowerMac G5 - PowerBook G4 - MacMini.
    Classic: Amiga 1200/060 - A500 PiStorm
  • »14.08.15 - 06:05
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