[LLVMdev] LLVM

[Chris Lattner]

On Tue, 24 Feb 2004, Jingling Xue wrote:

> Thanks for the quick input. The harder the LLVM is, the harder it is for
> me to teach the course :-) Too many optimisations have been added,
> meaning I have to design many new projects.

Ah, I see what you mean.  :)  If you are looking for ideas, there is still
larges opening in LLVM in the fields of profile guided optimizations and
loop optimizations.  The only PGO we have right now is a basic block
layout optimization, which is really only meant to be a proof of concept,
not a real transformation (it does speed programs up though :).  We have
very little in the way of loop optimization.

Another class of work that can be tackled is code-generator issues.  The
"1.2" code generator has been cleaned up quite a bit, and I am hoping to
get some time to write up some documentation for it in the 1.2
timeframe.  The code generator is currently pretty simple, but all of the
major components are in place.  If you want project ideas for code
generator work, just let me know.  :)

-Chris

> On Mon, Feb 23, 2004 at 09:41:13PM -0600, Chris Lattner wrote:
> > On Tue, 24 Feb 2004, Jingling Xue wrote:
> >
> > > I understand that LLVM is now available in the public domain.
> >
> > Yes it is.  It can be downloaded from the LLVM releases page here:
> > http://llvm.cs.uiuc.edu/releases/
> >
> > > I need to decide which compiler system I will use for my advanced
> > > compiler course this year.
> >
> > The current release is 1.1.  We are tentatively planning to release 1.2
> > sometime in the next month, which will include some improvements over 1.1.
> > A list of the new features and changes so far can be found in the "1.2"
> > release notes here:  http://llvm.cs.uiuc.edu/docs/ReleaseNotes.html
> >
> > So which release to use depends on your timeline.  If they will need to
> > start before ~Mar 20, then 1.1 makes sense.  If they will start after that
> > time, they can use 1.2 (which will be strictly better than 1.1).  If you
> > decide that you want some "1.2" feature before the 1.2 release, such as
> > the profiling infrastructure, you can always choose to work out of CVS.
> > CVS is pretty stable most of the time.
> >
> > > I assume many more optimisations have been added to the system.
> >
> > Yup, there have been a lot of new developments.  :)
> >
> > > Many students enjoyed working with your llvm last year.
> >
> > Great!  BTW, if any of them have any reports that they would like to
> > contribute to the "Projects built with LLVM" page, please have them send
> > them to me.  We'd like to showcase their hard work if they are willing to
> > share. :)  http://llvm.cs.uiuc.edu/ProjectsWithLLVM/
> >
> > > Thanks for the input.
> >
> > No problem, let me know if you still have questions.
> >
> > -Chris
> >
> >
> > > ---Jingling
> > > On Mon, Feb 23, 2004 at 09:20:01PM -0600, Chris Lattner wrote:
> > > > On Mon, 23 Feb 2004, Reid Spencer wrote:
> > > >
> > > > > Hi,
> > > > >
> > > > > Attempting to use cvs with LLVM is producing the following:
> > > > >
> > > > > bash-2.05b$ cvs status
> > > > > cvs [status aborted]: connect to
> > > > > llvm-cvs.cs.uiuc.edu(128.174.245.58):2401 failed: Connection refused
> > > > >
> > > > > I think this has happened before and the root cause was a stuck xinetd
> > > > > process on the cvs server.
> > > >
> > > > I kicked it, try again :)
> > > >
> > > > -Chris
> > > >
> > > > --
> > > > http://llvm.cs.uiuc.edu/
> > > > http://www.nondot.org/~sabre/Projects/
> > > >
> > > > _______________________________________________
> > > > LLVM Developers mailing list
> > > > LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> > > > http://mail.cs.uiuc.edu/mailman/listinfo/llvmdev
> > >
> > >
> >
> > -Chris
> >
> > --
> > http://llvm.cs.uiuc.edu/
> > http://www.nondot.org/~sabre/Projects/
> >
> > _______________________________________________
> > LLVM Developers mailing list
> > LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> > http://mail.cs.uiuc.edu/mailman/listinfo/llvmdev
>
>

-Chris

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