On the 0x206 day of Apache Harmony Mikhail Fursov wrote: > On 18 Oct 2006 11:31:09 +0700, Egor Pasko <[EMAIL PROTECTED]> wrote: > > > > I think 2 more optimizations should find themselves in the list as > > separate items, because they are easily formulated and are a good > > chance for performance gains that Jitrino.OPT can offer: > > + "Type Value Profiling" in Jitrino.OPT - Implement profiling the most > > probable caller's type for virtual and interface calls. Integrate > > with Jitrino high-level devirtualizer and the "interface call > > devirtualization" item. > > > I understand "interface devirt with value profiler" item from Rana's list as > the same task.
I separeted them just to state them clearly. One task is a value profiler. Another is interface devirt. They are best when they coexist, but they can work without each other (hypothetically). There is also "virtual call devirt" that I mentioned. Value profiler should be useful here too. > + "Loop versioning" optimization in Jitrino.OPT - Implement versioning > > of hot loops to allow as little exceptions (especially bounds > > checks) as possible in these loops. Integrate with "ABCD > > improvements" item. > > > Yes, our (Jitrino.OPT) loop optimizations are in a bad state today :) +1 =) especially because Java is not the best for loop optimizations (sorry if offending:) > BTW the page I've created recently ( > http://wiki.apache.org/harmony/JIT_Tasks_For_Beginners ) could be removed > and all the tasks listed there are added to the new page. +1, I'll make the new page and copy-paste Rana's collection there spiced with my additionals .. if we all agree > Another proposal: mark every item with a level of expertise required for a > volunteer: Novice, Advanced, Expert > This will help both to novice and expert users: Novice will know if the task > is rather easy. An expert will have a hint that the task worth to be > discussed about side effects more carefully... Let's mark in 2 categories: "Novice" and "Advanced". Otherwise it sounds like "you should prove that you are an expert, only then you can take the task", which I do not want to stress on. -- Egor Pasko, Intel Managed Runtime Division --------------------------------------------------------------------- Terms of use : http://incubator.apache.org/harmony/mailing.html To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
