[llvm-dev] buildbot failure in LLVM on llvm-clang-x86_64-expensive-checks-win

[Oliver Stannard via llvm-dev]

I’ve had another look, and some of the failing tests don’t use temporary files, so I don’t think this is a case of tests having side-effects.

Instead, I’ve noticed that in the build log (http://lab.llvm.org:8011/builders/llvm-clang-x86_64-expensive-checks-win/builds/6552/steps/build-unified-tree/logs/stdio), llvm-tblgen.exe is built (my patch modified it), but the table-generation steps of the main build (importantly, ARMGenAsmMatcher.inc) do not appear to be running. I think this would explain the FileCheck output from those failing tests.

Could there be a buildbot misconfiguration which is preventing the newly-built llvm-tblgen from being used?

Oliver

From: Galina Kistanova [mailto:gkistanova at gmail.com]
Sent: 04 December 2017 22:30
To: Oliver Stannard
Cc: Sander De Smalen; nd
Subject: Re: buildbot failure in LLVM on llvm-clang-x86_64-expensive-checks-win

Hi Oliver,

I have requested a clean build of that exact revision and all the tests passes.
http://lab.llvm.org:8011/builders/llvm-clang-x86_64-expensive-checks-win/builds/6561

This is kind of bad, as it seems some tests have side effects.

Thanks

Galina



On Mon, Dec 4, 2017 at 5:47 AM, Oliver Stannard <Oliver.Stannard at arm.com<mailto:Oliver.Stannard at arm.com>> wrote:
Hi Galina,

This buildbot failure looks related to my patch (blamelist of 1, the failing tests are ones I modified), but it's not clear what is wrong from the lit output, and I haven't been able to reproduce this locally. Would it be possible for you to send me the output of one of the failing llvm-mc commands on that bot?

Sander also hit a similar problem with the same bot in https://reviews.llvm.org/D40011.

Thanks,
Oliver

> -----Original Message-----
> From: llvm.buildmaster at lab.llvm.org<mailto:llvm.buildmaster at lab.llvm.org>
> [mailto:llvm.buildmaster at lab.llvm.org<mailto:llvm.buildmaster at lab.llvm.org>]
> Sent: 04 December 2017 12:51
> To: Oliver Stannard
> Cc: gkistanova at gmail.com<mailto:gkistanova at gmail.com>
> Subject: buildbot failure in LLVM on llvm-clang-x86_64-expensive-checks-
> win
>
> The Buildbot has detected a new failure on builder llvm-clang-x86_64-
> expensive-checks-win while building llvm.
> Full details are available at:
>  http://lab.llvm.org:8011/builders/llvm-clang-x86_64-expensive-checks-
> win/builds/6552
>
> Buildbot URL: http://lab.llvm.org:8011/
>
> Buildslave for this Build: ps4-buildslave2
>
> Build Reason: scheduler
> Build Source Stamp: [branch trunk] 319649
> Blamelist: olista01
>
> BUILD FAILED: failed test-check-all
>
> sincerely,
>  -The Buildbot
>
>

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