On Fri, Jul 20, 2012 at 2:55 PM, Michael Foord <fuzzy...@voidspace.org.uk>wrote:
> > On 17 Jul 2012, at 23:04, mar...@v.loewis.de wrote: > > >> [snip...] > > > >> I would like to use a JIT to generate specialized functions for a > >> combinaison of arguments types. > > > > I think history has moved past specializing JITs. Tracing JITs are the > > status quo; they provide specialization as a side effect. > > > > Mozilla implemented a method-JIT (compile whole methods) on top of their > tracing JIT because a tracing JIT only optimises part of your code (only in > loops and only if executed more times than the threshold) and there are > further performance improvements to be had. So tracing JITs are not the > *whole* of the state of the art. > > Michael > I'm sorry michael but you're like a 100th person I have to explain this to. The pure reason that mozilla did not make a tracing JIT work does not mean the entire approach is horribly doomed as many people would like to assume. The reasons are multiple, but a lot of them are connected to poor engineering (for example the part inherited from adobe is notoriously bad, have a look if you want). Cheers, fijal
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