[MacRuby-devel] LLVM 2.8

[Laurent Sansonetti]

Hi Craig,

There is currently no effort. We are preparing the 0.7 release right now and I don't think synchronizing with the upcoming LLVM 2.8 release is a good idea, since it may introduce side effects. But once the release is done, we can look at it.

If you want to work on this feel free. I assume it will just be a matter of porting to the new APIs, assuming no regressions were added recently in LLVM ToT. It would be a good way to learn about the MacRuby compiler :) If you have any question let us know here.

Laurent

On Sep 24, 2010, at 7:17 AM, Craig Bosma wrote:

> Hi,
> 
> Is any effort being made to synchronize the upcoming MacRuby 0.7
> release with the upcoming LLVM 2.8 release? How big are the changes to
> LLVM between the preferred MacRuby version (r106781) and the latest RC
> (https://llvm.org/svn/llvm-project/llvm/tags/RELEASE_28/rc2, r114689)?
> 
> MacRuby HEAD doesn't build with 2.8rc2, (at a glance) related to the
> following changes listed here:
> http://llvm.org/docs/ReleaseNotes.html#whatsnew
> 
> * LLVM 2.8 changes the internal order of operands in InvokeInst and
> CallInst. To be portable across releases, resort to CallSite and the
> high-level accessors, such as getCalledValue and setUnwindDest.
> * You can no longer pass use_iterators directly to cast<> (and
> similar), because these routines tend to perform costly dereference
> operations more than once. You have to dereference the iterators
> yourself and pass them in.
> 
> I'm not expert on LLVM or MacRuby, but I'd like to see compatibility
> between 'stable' versions, so I'm happy to help if I can.
> 
> Craig
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