[LLVMdev] stability of llvm ir across releases

Jeremy Lakeman Jeremy.Lakeman at gmail.com
Sat Mar 14 05:22:03 PDT 2015

Assembly syntax can and will break between versions. But bitcode should
generally be upgradeable, or a bug should be filed.

On Sat, Mar 14, 2015 at 4:41 PM, Hayden Livingston <halivingston at gmail.com>

> Is it safe to assume that LLVM IR will live more-or-less the same for most
> releases, and that significant changes will be communicated?
> Or is it something that can change at any time and you must not rely on it
> ever being same.
> To me, it seems like the IR has evolved slowly but no spectacularly large
> changes were made in the 1-1.5 years I've been watching it, -- sure some
> experimental patch point, gc stuff, but not your day-to-day types etc
> I'm asking because I'm going to take somewhat major dependencies in my
> upcoming system on the IR, and being able to store it across multiple
> releases of my system.
> I don't anticipate moving to newer versions of LLVM every time I release,
> but I do imagine wanting to upgrade to let's say LLVM 3.7 or whatever
> releases come by.
> Hayden
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20150314/cd77a5f2/attachment.html>

More information about the llvm-dev mailing list