[llvm] r279573 - MachineFunction: Introduce NoPHIs property

Wed Aug 24 20:55:34 PDT 2016

this failure may also be related:
http://lab.llvm.org:8011/builders/sanitizer-ppc64be-linux/builds/3510/steps/run%20msan%20unit%20tests/logs/stdio

On Wed, Aug 24, 2016 at 7:37 PM, Kostya Serebryany <kcc at google.com> wrote:

>
> I afraid I may need some help now...
> http://lab.llvm.org:8011/builders/clang-ppc64be-linux-
> lnt/builds/7075/steps/ninja%20check%201/logs/FAIL%3A%
> 20AddressSanitizer-Unit%3A%3AAddressSanitizerInterface.
> ManyThreadsWithStatsStressTest
>
> [ RUN      ] AddressSanitizerInterface.ManyThreadsWithStatsStressTest
> ==18839==AddressSanitizer CHECK failed: /home/buildbots/ppc64be-clang-lnt-test/clang-ppc64be-lnt/llvm/projects/compiler-rt/lib/asan/asan_allocator.cc:484 "((m->free_tid)) == ((kInvalidTid))" (0x65, 0xffffff)
>     #0 0x10102680  (/home/buildbots/ppc64be-clang-lnt-test/clang-ppc64be-lnt/stage1/projects/compiler-rt/lib/asan/tests/default/Asan-powerpc64-inline-Test+0x10102680)
>     #1 0x10123754  (/home/buildbots/ppc64be-clang-lnt-test/clang-ppc64be-lnt/stage1/projects/compiler-rt/lib/asan/tests/default/Asan-powerpc64-inline-Test+0x10123754)
>
>
>
> This is most likely due to  r279664, so please verify that by reverting
> it locally.
>
> next, do you know why the stack traces on the bot are not symbolized?
> is that because llvm-symbolizer is not supported on PPC?
> I need the symbolized stack traces to get some clue...
>
> finally, will you be able to make the test smaller to narrow down the
> cause of the failure?
>
> If this is the only failure due to r279664 I'd rather disable this test
> on PPC than revert r279664.
> WDYT?
>
> --kcc
>
>
>
>
> On Wed, Aug 24, 2016 at 2:35 PM, Bill Seurer <seurer at linux.vnet.ibm.com>
> wrote:
>
>> On 08/24/16 13:22, Kostya Serebryany wrote:
>>
>>> Did reverting help?
>>> If yes, I will need someone's help to debug this on PPC -- I really need
>>> this change back.
>>>
>>
>> Reverting it did help.  In the future if you (or anyone else) needs help
>> with debugging a problem on power I can usually help.  Just let me know
>> what you need done.
>> --
>>
>> -Bill Seurer
>>
>>
>
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