[LLVMdev] LLVM 3.4rc2 Binaries Now Available

[Bill Wendling]

+grosbach

Hi Hal,

Re (1): Jim is our resident ARM expert. Adding him here.

Re (2): There are a ton of simple programs that have been reported over the
last month that are failing at higher levels. It's quite disturbing,
really. I don't have a lot of time to debug these (it's no longer my main
job to work on LLVM). I'll try to press people as much as possible.

-bw


On Wed, Dec 4, 2013 at 5:42 AM, Hal Finkel <hfinkel at anl.gov> wrote:

> Bill, et al.,
>
> FYI, there are currently two issues that I'm tracking that should be fixed
> prior to release:
>
>  1. PowerPC self-hosting is currently broken(*), triggered by a change
> made to improve if conversion on ARM. There is a patch on the commits list
> that fixes problems seen by self hosting (and, if nothing else, that patch
> should likely go into 3.4), but I don't think that any of us are convinced
> that this is the right solution in principle. If you could pin down Evan
> (who I believe wrote the original code in question), or someone else
> familiar with ARM and if conversion, to look at this, I think that would
> help a lot.
>
>  See the thread, "Re: [llvm] r190309 - [ARMv8] Prevent generation of
> deprecated IT blocks on ARMv8 in Thumb mode." on the llvm-commits list.
>
>  2. There is a set of (fairly simple) C programs in PR16431 that are
> currently miscompiled by Clang/LLVM >= -O2 on x86_64 (both Linux and Mac).
> I've isolated what appear to be the two underlying bugs in PR18067 (GVN)
> and PR18068 (DSE). We need to have these looked at.
>
> I would appreciate any assistance you could provide.
>
> Thanks again,
> Hal
>
> (*) Only when compiling without asserts, which is why the buildbots
> currently miss the problem.
>
> ----- Original Message -----
> > From: "Bill Wendling" <isanbard at gmail.com>
> > To: "<llvmdev at cs.uiuc.edu> Mailing List" <llvmdev at cs.uiuc.edu>, "
> cfe-dev at cs.uiuc.edu Developers"
> > <cfe-dev at cs.uiuc.edu>
> > Sent: Wednesday, December 4, 2013 1:22:50 AM
> > Subject: [LLVMdev] LLVM 3.4rc2 Binaries Now Available
> >
> > The LLVM 3.4rc2 binaries are now available for testing! Please
> > download them and compile and test things. See if it breaks your
> > code! Please file bugs for any issues you encounter. At this point,
> > we’re only accepting fixes for regressions from 3.3.
> >
> > Share and enjoy!
> > -bw
> >
> >
> > _______________________________________________
> > LLVM Developers mailing list
> > LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
> >
>
> --
> Hal Finkel
> Assistant Computational Scientist
> Leadership Computing Facility
> Argonne National Laboratory
>
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