Potential self-hosting failure

[John Brawn via llvm-commits]

I've managed to reproduce this, but no luck so far in figuring out
what exactly is going wrong. I'll continue looking into it tomorrow.

John

> -----Original Message-----
> From: Renato Golin [mailto:renato.golin at linaro.org]
> Sent: 16 May 2017 12:18
> To: John Brawn
> Cc: James Molloy; Diana Picus; LLVM Commits; Clang Commits
> Subject: Potential self-hosting failure
> 
> Hi John,
> 
> It seems the LEApcrel patches have broken our self-hosting:
> 
> http://lab.llvm.org:8011/builders/clang-cmake-thumbv7-a15-full-
> sh/builds/1550
> 
> http://lab.llvm.org:8011/builders/clang-cmake-armv7-a15-selfhost-
> neon/builds/1349
> 
> http://lab.llvm.org:8011/builders/clang-cmake-armv7-a15-
> selfhost/builds/1845
> 
> The range in each is big, but the overlapping range is actually just
> 303051 ~ 303054.
> 
> Since two of those patches are yours and since this is a self-hosting
> issue, my money is on your patches, not the Dwarf one. :)
> 
> The tests don't help much, unfortunately.
> 
> I have had problems like this in Clang, where the code assumed some
> ABI that wasn't as generic as initially assumed, and changes in
> relocation are normally the ones that expose those wrong assumptions.
> 
> Can you have a look on your side, while we're testing on our side, too?
> 
> Thanks!
> --renato