[swift-dev] Are there any Swift/LLVM optimizations I could be assigned to?

[Erik Eckstein]

Hi Eddie,

> On Sep 19, 2016, at 6:10 PM, Eddie Santos via swift-dev <swift-dev at swift.org> wrote:
> 
> Hi all,
> 
> Are there any moderately do-able optimizations that can be done in the Swift compiler that have not been done yet?
> 
> I am a masters student at the University of Alberta in Dr. J. Nelson Amaral's compiler optimization course, and I am searching for a project that can be reasonably completed in two months' time. Contributing to Swift's compiler seems like a great choice!

Cool! Welcome!

> I am also open to making improvements to LLVM in general, though the point of this project is to get my feet wet in static analysis -- I'm not an expert yet.
> 
> I'm interested in anything character encodings, strings and unicode, but that limits my options in terms of *compiler optimizations*. I can also look into profile-guided optimizations in LLVM [Profile], but I wanna know who's got dibs before I start off on my own.
> 

There are two things which I have in mind:

1) You could look at optimizing character literals. Try to compile the following code and you’ll see what I mean.

func foo() -> Character {
  return Character("x")
}

2) Vedant has started working on PGO for swift. When the basic infrastructure is in place you could work on using PGO data in various SIL optimizations.


Erik



> Your input is welcome.
> 
> [Profile]: http://llvm.org/OpenProjects.html#profileguided <http://llvm.org/OpenProjects.html#profileguided>
> 
> Regards,
> Eddie
> --
> Eddie Antonio Santos
> M.Sc. Student and Teaching Assistant
> Department of Computing Science
> University of Alberta
> easantos at ualberta.ca <mailto:easantos at ualberta.ca>
> http://eddieantonio.ca/ <http://eddieantonio.ca/>_______________________________________________
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