[zorg] r284153 - Added support for ThinLTO.

[Galina Kistanova via llvm-commits]

Hello Teresa,

For a ThinLTOwith gold, you could just use the getClangWithLTOBuildFactory
with depends_on_projects=['llvm', 'clang'], and lto='thin'. On the builder
you would need to link ld to gold.
Feel free to ask if you will have questions or would need some help.

Thanks

Galina




On Fri, Oct 14, 2016 at 12:39 PM, Galina Kistanova <gkistanova at gmail.com>
wrote:

> Hi Teresa,
>
> We do have a LTO builder with gold:
> http://lab.llvm.org:8011/builders/clang-3stage-ubuntu.
> Anyway, here is the a short explanation of how to add a bot:
> http://llvm.org/docs/HowToAddABuilder.html
> Hope it will help. Please feel free to ask if you have more questions.
>
> Thanks
>
> Galina
>
>
>
>
> On Thu, Oct 13, 2016 at 2:56 PM, Teresa Johnson <tejohnson at google.com>
> wrote:
>
>> Thanks for setting up an lld ThinLTO bot. I've been meaning do so for
>> gold, but have no idea where to start. Does anyone have any pointers they
>> could send me on how to set up bots?
>> Thanks,
>> Teresa
>>
>>
>> On Thu, Oct 13, 2016, 2:46 PM Galina Kistanova via llvm-commits <
>> llvm-commits at lists.llvm.org> wrote:
>>
>>> I am going to set it it builder definition, also I might change the
>>> implementation in favor of cmake option LLVM_ENABLE_LTO={THIN,FULL}, which
>>> I am in the middle of checking.
>>>
>>>
>>>  {'name' : "clang-with-thin-lto-ubuntu",
>>>          'slavenames' : ["ps4-buildslave1a"],
>>>          'builddir' : "clang-with-thin-lto-ubuntu",
>>>          'factory': ClangLTOBuilder.getClangWithLT
>>> OBuildFactory(lto='thin'),
>>>          'category'   : 'lld'},
>>>
>>>
>>> Thanks
>>>
>>> Galina
>>>
>>>
>>>
>>> On Thu, Oct 13, 2016 at 1:13 PM, Davide Italiano <davide at freebsd.org>
>>> wrote:
>>>
>>> On Thu, Oct 13, 2016 at 12:32 PM, Galina Kistanova via llvm-commits
>>> <llvm-commits at lists.llvm.org> wrote:
>>> > Author: gkistanova
>>> > Date: Thu Oct 13 14:32:23 2016
>>> > New Revision: 284153
>>> >
>>> > URL: http://llvm.org/viewvc/llvm-project?rev=284153&view=rev
>>> > Log:
>>> > Added support for ThinLTO.
>>> >
>>>
>>> Thanks. I may miss something, but where are you actually setting
>>> `-flto=thin` ?
>>>
>>> > Modified:
>>> >     zorg/trunk/zorg/buildbot/builders/ClangLTOBuilder.py
>>> >
>>> > Modified: zorg/trunk/zorg/buildbot/builders/ClangLTOBuilder.py
>>> > URL: http://llvm.org/viewvc/llvm-project/zorg/trunk/zorg/buildbot
>>> /builders/ClangLTOBuilder.py?rev=284153&r1=284152&r2=284153&view=diff
>>> > ============================================================
>>> ==================
>>> > --- zorg/trunk/zorg/buildbot/builders/ClangLTOBuilder.py (original)
>>> > +++ zorg/trunk/zorg/buildbot/builders/ClangLTOBuilder.py Thu Oct 13
>>> 14:32:23 2016
>>> > @@ -233,6 +233,7 @@ def getClangWithLTOBuildFactory(
>>> >             jobs  = None,
>>> >             extra_configure_args = None,
>>> >             compare_last_2_stages = True,
>>> > +           lto = None, # The string gets passed to -flto flag as is.
>>> Like -flto=thin.
>>> >             env = None):
>>> >
>>> >      # Set defaults
>>> > @@ -305,11 +306,16 @@ def getClangWithLTOBuildFactory(
>>> >      # Build all the remaining stages with exactly the same
>>> configuration.
>>> >
>>> >      # Set proper compile and link flags.
>>> > +    if lto:
>>> > +        lto = '-flto=%s' % lto
>>> > +    else:
>>> > +        lto = '-flto'
>>> > +
>>> >      CmakeCommand.appendFlags(extra_configure_args, [
>>> > -        ('-DCMAKE_CXX_FLAGS=',           ['-flto']),
>>> > -        ('-DCMAKE_EXE_LINKER_FLAGS=',    ['-flto', '-fuse-ld=lld']),
>>> > -        ('-DCMAKE_MODULE_LINKER_FLAGS=', ['-flto', '-fuse-ld=lld']),
>>> > -        ('-DCMAKE_SHARED_LINKER_FLAGS=', ['-flto', '-fuse-ld=lld']),
>>> > +        ('-DCMAKE_CXX_FLAGS=',           [lto]),
>>> > +        ('-DCMAKE_EXE_LINKER_FLAGS=',    [lto, '-fuse-ld=lld']),
>>> > +        ('-DCMAKE_MODULE_LINKER_FLAGS=', [lto, '-fuse-ld=lld']),
>>> > +        ('-DCMAKE_SHARED_LINKER_FLAGS=', [lto, '-fuse-ld=lld']),
>>> >          ])
>>> >
>>> >      # The rest are test stages, which depend on the staged compiler
>>> we are ultimately after.
>>> >
>>> >
>>> > _______________________________________________
>>> > llvm-commits mailing list
>>> > llvm-commits at lists.llvm.org
>>> > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-commits
>>>
>>> --
>>> Davide
>>>
>>> "There are no solved problems; there are only problems that are more
>>> or less solved" -- Henri Poincare
>>>
>>>
>>> _______________________________________________
>>> llvm-commits mailing list
>>> llvm-commits at lists.llvm.org
>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-commits
>>>
>>
>
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