[llvm] r229841 - Reverting r229831 due to multiple ARM/PPC/MIPS build-bot failures.

[Richard Barton]

Rentato - do you remember if Michael's latest attempt to land the patch caused problems for the ARMv7-A buildbot?

Would you have time to do the experiment that Michael mentions?

> -----Original Message-----
> From: Kuperstein, Michael M [mailto:michael.m.kuperstein at intel.com]
> Sent: 11 May 2015 22:10
> To: Richard Barton
> Cc: llvm-commits at cs.uiuc.edu
> Subject: RE: [llvm] r229841 - Reverting r229831 due to multiple
> ARM/PPC/MIPS build-bot failures.
>
> We can, but I'll need someone on the arm side to help me debug. :-)
>
> Aside from the MIPS failures, I was also getting self-host failures on arm -
> specifically, stage 2 crashes (or maybe out-of-memory, don't remember)
> when trying to compile the new tablegen-generated files.
> It seems like this doesn't happen on x86, and I'm not sure whether it's really
> a miscompile of the stage 1 clang caused by the change, or whether it just
> uncovers a front-end bug.
>
> I can rebase the patch and try to commit again, I'll need someone on the
> ARM side to help me out with the debugging.
> As an alternative, if you could try to reproduce the crash with r229841 or
> r233055 - e.g. try to self-host one of them, or build a clean top-of-trunk clang
> on a configuration similar to the armv7-a15-neon buildbot, and try to build
> r229841/r233055 with it, to see whether we really have a frontend issue, that
> would be great.
>
> Thanks,
>    Michael
>
> -----Original Message-----
> From: Richard Barton [mailto:richard.barton at arm.com]
> Sent: Monday, May 11, 2015 19:22
> To: Kuperstein, Michael M
> Cc: llvm-commits at cs.uiuc.edu
> Subject: RE: [llvm] r229841 - Reverting r229831 due to multiple
> ARM/PPC/MIPS build-bot failures.
>
> Hi Michael
>
> Now that Daniel has upgraded the gcc toolchain on the MIPS buildbot, I was
> wondering if there any reason why we cannot try and re-apply the patch to
> introduce the FeatureBitset to MC?
>
> Thanks
> Rich
>
>
>
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