tstellar added a comment.

In D120305#3346880 <https://reviews.llvm.org/D120305#3346880>, @MaskRay wrote:

> In D120305#3346787 <https://reviews.llvm.org/D120305#3346787>, @nemanjai 
> wrote:
>
>> In D120305#3346144 <https://reviews.llvm.org/D120305#3346144>, @MaskRay 
>> wrote:
>>
>>> In D120305#3345978 <https://reviews.llvm.org/D120305#3345978>, @MaskRay 
>>> wrote:
>>>
>>>> In D120305#3345810 <https://reviews.llvm.org/D120305#3345810>, @RKSimon 
>>>> wrote:
>>>>
>>>>> @MaskRay The ppc buildbots have been red since these patches - please can 
>>>>> you take a look? https://lab.llvm.org/buildbot/#/builders/57/builds/15454
>>>>
>>>> Seems that ppc64 doesn't support test/sanitizer_common test/crt -fpie. 
>>>> I'll just disable them: https://github.com/llvm/llvm-project/issues/54084
>>>
>>> Actually I don't know how to disable the tests: 
>>> https://lab.llvm.org/buildbot/#/builders/57/builds/15497 still failed.
>>> Hope someone from #powerpc <https://reviews.llvm.org/tag/powerpc/> can 
>>> disable them.
>>
>> This does not appear to be a matter of simply marking some tests as 
>> UNSUPPORTED. Since this landed, there have been many builds with different 
>> sanitizer failures and different numbers of sanitizer failures. Please pull 
>> this patch to bring the bots back to green and we can work with you next 
>> week on fixing what needs to be fixed.
>
> I enabled -DCLANG_DEFAULT_PIE_ON_LINUX=OFF for clang-ppc64le-rhel: 
> https://github.com/llvm/llvm-zorg/commit/b6ddf02ce3a54da2df29e7e599b1838167e0e3ad
> which should fix the issues.
>
> While I feel sorry for leaving clang-ppc64le-rhel red for some time and am 
> willing to fix issues if I have access to a ppc64 machine (especially 
> compiler-rt ones that I care about),
> I feel uncomfortably if a group just bluntly request "please pull this patch" 
> when apparently (a) there is a better approach (explicitly setting 
> CLANG_DEFAULT_PIE_ON_LINUX=OFF) and (b) there is something a bot maintainer 
> can do
> and (c) there is just some inherent stability problem (in this case, consider 
> not enabling the testing when the target is still unstable) that is causing 
> not only this issue, but various other reports (as I watch sanitizer failures 
> quite closely and ppc64 often tends to be the outlier thing)

Fixing the buildbot like this doesn't help regular users though.  I think it's 
better to revert and then work on a solution as @nemanjai suggested.  What  are 
the downsides to reverting this?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D120305/new/

https://reviews.llvm.org/D120305

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