[llvm-dev] darwin bootstrap failure

Aaron Ballman via llvm-dev llvm-dev at lists.llvm.org
Sun Oct 15 10:03:52 PDT 2017 

On Sun, Oct 15, 2017 at 12:40 PM, Don Hinton <hintonda at gmail.com> wrote:
> On Sun, Oct 15, 2017 at 8:34 AM, Aaron Ballman <aaron at aaronballman.com>
> wrote:
>>
>> FWIW, most of the ones I was fixing up were guarded by NDEBUG instead
>> of LLVM_ENABLE_DUMP. Switching to LLVM_ENABLE_DUMP fixed the link
>> errors for me -- the only one I struggled with was
>> AsmMatcherEmitter::run(). But it sounds like you're saying switching
>> the configuration type in MSVC from Debug to Release would have
>> possibly caused issues as well?
>
>
> This is what I believe is going on -- hope this isn't too convoluted...
>
> I don't know how you invoked cmake, but the generators for VS and Xcode
> support multiple configurations, allowing you to delay choosing the build
> type and implicitly setting CMAKE_BUILD_TYPE=None.
>
> If CMAKE_BUILD_TYPE isn't passed or doesn't include "debug", CMakeLists.txt
> assumes it's a release build, turns off both asserts and dump methods, and
> generates llvm-config.h without defining LLVM_ENABLE_DUMP.  Since my change
> removed the NDEBUG test for most dump definitions, they were #ifdef'd away.
> While it's possible to override this behavior by passing
> -DLLVM_ENABLE_ASSERTIONS or -DLLMV_FORCE_ENABLE_DUMP, you don't seem to have
> done that.
>
> So, when a Debug build was later selected, llvm-config.h had already been
> written without defining LLVM_ENABLE_DUMP, and since table-gen didn't have
> the fix, it assumed the dump methods were available when it didn't see
> -DNEBUG on the command line -- hence the linking errors.
>
> So, setting LLVM_ENABLE_DUMP at configuration time won't work in this case,
> and I'm leaning toward removing it completely.

Ah, okay, I see what the issue is. Thank you for the explanation!

> Jack's issue involved removing -DNDEBUG in a script for Release builds.
> While it caused the same linking issues you saw, it really didn't have
> anything to do with the configuration issue you uncovered.  Had I seen any
> other errors, I would have rolled it back yesterday, but as you've said, the
>bots were clean wrt this change.

I was surprised that this didn't make any MSVC bots go red. The
default behavior I see is that I run cmake and I get a Debug build
without fiddling with anything in MSVC, unless I specify cmake options
to do a release build.

> So, thanks again for reverting it, and sorry for any inconvenience.

No problem -- sorry that the patch may not work out!

~Aaron

>
> hth...
> don
>
>>
>> ~Aaron
>>
>> >
>> > Thanks again...
>> > don
>> >
>> >
>> >
>> >
>> >>
>> >>
>> >> ~Aaron
>> >>
>> >> >
>> >> > thanks again...
>> >> > don
>> >> >
>> >> > On Sun, Oct 15, 2017 at 7:35 AM, Aaron Ballman
>> >> > <aaron at aaronballman.com>
>> >> > wrote:
>> >> >>
>> >> >> On Sat, Oct 14, 2017 at 11:25 AM, Don Hinton via llvm-dev
>> >> >> <llvm-dev at lists.llvm.org> wrote:
>> >> >> > Hi Jack:
>> >> >> >
>> >> >> > Yes, I was just looking at that.  Seems like TableGen wasn't done
>> >> >> > along
>> >> >> > with
>> >> >> > the rest of llvm.  I'll work up a complete patch shortly.
>> >> >>
>> >> >> This also broke the build for MSVC when doing a debug build (though
>> >> >> no
>> >> >> builder seems to be picking up the failure!). After working around a
>> >> >> handful of link errors, I came to one that's going to require more
>> >> >> understanding of LLVM's tablegen than I have.
>> >> >>
>> >> >> Error LNK2019 unresolved external symbol "public: void __cdecl
>> >> >> `anonymous namespace'::MatchableInfo::dump(void)const "
>> >> >> (?dump at MatchableInfo@?A0xf4f1c304@@QEBAXXZ) referenced in function
>> >> >> "public: void __cdecl `anonymous
>> >> >> namespace'::AsmMatcherEmitter::run(class llvm::raw_ostream &)"
>> >> >> (?run at AsmMatcherEmitter@?A0xf4f1c304@@QEAAXAEAVraw_ostream at llvm@@@Z)
>> >> >> llvm-tblgen D:\llvm\2017\utils\TableGen\AsmMatcherEmitter.obj 1
>> >> >>
>> >> >> Since this has been broken for over a day and the fixes are
>> >> >> nontrivial, I've reverted your commit (r315590) in r315854.
>> >> >> Hopefully
>> >> >> this doesn't cause you too many problems!
>> >> >>
>> >> >> ~Aaron
>> >> >>
>> >> >> >
>> >> >> > Btw, I'm curious how this happened.  Do you have a stale
>> >> >> > CMakeCache.txt
>> >> >> > by
>> >> >> > any chance?  You might check the value for LLVM_ENABLE_DUMP and
>> >> >> > see
>> >> >> > if
>> >> >> > it's
>> >> >> > consistent.
>> >> >> >
>> >> >> > Again, I'll gen up a complete patch shortly -- sorry for delay,
>> >> >> > had
>> >> >> > to
>> >> >> > walk
>> >> >> > my dog first...
>> >> >> >
>> >> >> > thanks...
>> >> >> > don
>> >> >> >
>> >> >> > On Sat, Oct 14, 2017 at 8:06 AM, Jack Howarth
>> >> >> > <howarth.mailing.lists at gmail.com> wrote:
>> >> >> >>
>> >> >> >>
>> >> >> >>
>> >> >> >> On Sat, Oct 14, 2017 at 10:25 AM, Don Hinton <hintonda at gmail.com>
>> >> >> >> wrote:
>> >> >> >>>
>> >> >> >>> Hi Jack:
>> >> >> >>>
>> >> >> >>> Looks like I missed this one in my recent change.
>> >> >> >>>
>> >> >> >>> Please let me know if this solves your problem:
>> >> >> >>>
>> >> >> >>> $ git diff
>> >> >> >>> diff --git a/utils/TableGen/InfoByHwMode.cpp
>> >> >> >>> b/utils/TableGen/InfoByHwMode.cpp
>> >> >> >>> index 7e1e1864356..8d3636432aa 100644
>> >> >> >>> --- a/utils/TableGen/InfoByHwMode.cpp
>> >> >> >>> +++ b/utils/TableGen/InfoByHwMode.cpp
>> >> >> >>> @@ -98,14 +98,16 @@ void
>> >> >> >>> ValueTypeByHwMode::writeToStream(raw_ostream
>> >> >> >>> &OS) const {
>> >> >> >>>    OS << '}';
>> >> >> >>>  }
>> >> >> >>>
>> >> >> >>> +#ifdef LLVM_ENABLE_DUMP
>> >> >> >>>  LLVM_DUMP_METHOD
>> >> >> >>>  void ValueTypeByHwMode::dump() const {
>> >> >> >>>    dbgs() << *this << '\n';
>> >> >> >>>  }
>> >> >> >>> +#endif
>> >> >> >>>
>> >> >> >>>  ValueTypeByHwMode llvm::getValueTypeByHwMode(Record *Rec,
>> >> >> >>>                                               const
>> >> >> >>> CodeGenHwModes
>> >> >> >>> &CGH)
>> >> >> >>> {
>> >> >> >>> -#ifndef NDEBUG
>> >> >> >>> +#ifdef LLVM_ENABLE_DUMP
>> >> >> >>>    if (!Rec->isSubClassOf("ValueType"))
>> >> >> >>>      Rec->dump();
>> >> >> >>>  #endif
>> >> >> >>>
>> >> >> >>>
>> >> >> >>> thanks...
>> >> >> >>> don
>> >> >> >>>
>> >> >> >>
>> >> >> >> The patch seems to be incomplete as it moves the failure to...
>> >> >> >>
>> >> >> >> [  6%] Linking CXX executable ../../bin/llvm-tblgen
>> >> >> >> cd /sw/src/fink.build/llvm60-6.0.0-1/build/stage1/utils/TableGen
>> >> >> >> &&
>> >> >> >> /sw/bin/cmake -E cmake_link_script
>> >> >> >> CMakeFiles/llvm-tblgen.dir/link.txt
>> >> >> >> --verbose=1
>> >> >> >> /sw/src/fink.build/llvm60-6.0.0-1/opt-bin/ccclang++  -fno-common
>> >> >> >> -fPIC
>> >> >> >> -fvisibility-inlines-hidden -Werror=date-time
>> >> >> >> -Werror=unguarded-availability-new -std=c++11 -Wall -W
>> >> >> >> -Wno-unused-parameter
>> >> >> >> -Wwrite-strings -Wcast-qual -Wmissing-field-initializers
>> >> >> >> -pedantic
>> >> >> >> -Wno-long-long -Wcovered-switch-default -Wnon-virtual-dtor
>> >> >> >> -Wdelete-non-virtual-dtor -Wstring-conversion -O3
>> >> >> >> -Wl,-search_paths_first
>> >> >> >> -Wl,-headerpad_max_install_names  -L/sw/lib  -Wl,-dead_strip
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/AsmMatcherEmitter.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/AsmWriterEmitter.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/AsmWriterInst.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/Attributes.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/CallingConvEmitter.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/CodeEmitterGen.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/CodeGenDAGPatterns.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/CodeGenHwModes.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/CodeGenInstruction.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/CodeGenMapTable.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/CodeGenRegisters.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/CodeGenSchedule.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/CodeGenTarget.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/DAGISelEmitter.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/DAGISelMatcherEmitter.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/DAGISelMatcherGen.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/DAGISelMatcherOpt.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/DAGISelMatcher.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/DFAPacketizerEmitter.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/DisassemblerEmitter.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/FastISelEmitter.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/FixedLenDecoderEmitter.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/GlobalISelEmitter.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/InfoByHwMode.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/InstrInfoEmitter.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/IntrinsicEmitter.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/OptParserEmitter.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/PseudoLoweringEmitter.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/RegisterBankEmitter.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/RegisterInfoEmitter.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/SearchableTableEmitter.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/SubtargetEmitter.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/SubtargetFeatureInfo.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/TableGen.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/Types.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/X86DisassemblerTables.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/X86EVEX2VEXTablesEmitter.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/X86FoldTablesEmitter.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/X86ModRMFilters.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/X86RecognizableInstr.cpp.o
>> >> >> >> CMakeFiles/obj.llvm-tblgen.dir/CTagsEmitter.cpp.o  -o
>> >> >> >> ../../bin/llvm-tblgen
>> >> >> >> -Wl,-rpath, at loader_path/../lib ../../lib/libLLVMSupport.a
>> >> >> >> ../../lib/libLLVMTableGen.a ../../lib/libLLVMSupport.a -lcurses
>> >> >> >> -lz
>> >> >> >> -lm
>> >> >> >> ../../lib/libLLVMDemangle.a
>> >> >> >> Undefined symbols for architecture x86_64:
>> >> >> >>   "llvm::SubtargetFeatureInfo::dump() const", referenced from:
>> >> >> >>       (anonymous namespace)::AsmMatcherInfo::buildInfo() in
>> >> >> >> AsmMatcherEmitter.cpp.o
>> >> >> >>   "(anonymous namespace)::MatchableInfo::dump() const",
>> >> >> >> referenced
>> >> >> >> from:
>> >> >> >>       (anonymous
>> >> >> >> namespace)::AsmMatcherEmitter::run(llvm::raw_ostream&)
>> >> >> >> in
>> >> >> >> AsmMatcherEmitter.cpp.o
>> >> >> >> ld: symbol(s) not found for architecture x86_64
>> >> >> >> clang: error: linker command failed with exit code 1 (use -v to
>> >> >> >> see
>> >> >> >> invocation)
>> >> >> >> make[2]: *** [bin/llvm-tblgen] Error 1
>> >> >> >> make[1]: *** [utils/TableGen/CMakeFiles/llvm-tblgen.dir/all]
>> >> >> >> Error 2
>> >> >> >> make: *** [all] Error 2
>> >> >> >>
>> >> >> >>         Jack
>> >> >> >>
>> >> >> >>>
>> >> >> >>>
>> >> >> >>> On Sat, Oct 14, 2017 at 6:06 AM, Jack Howarth via llvm-dev
>> >> >> >>> <llvm-dev at lists.llvm.org> wrote:
>> >> >> >>>>
>> >> >> >>>> Is anyone else seeing this bootstrap failure on current svn
>> >> >> >>>> trunk?
>> >> >> >>>>
>> >> >> >>>> [  6%] Linking CXX executable ../../bin/llvm-tblgen
>> >> >> >>>> cd
>> >> >> >>>> /sw/src/fink.build/llvm60-6.0.0-1/build/stage1/utils/TableGen
>> >> >> >>>> &&
>> >> >> >>>> /sw/bin/cmake -E cmake_link_script
>> >> >> >>>> CMakeFiles/llvm-tblgen.dir/link.txt
>> >> >> >>>> --verbose=1
>> >> >> >>>> /sw/src/fink.build/llvm60-6.0.0-1/opt-bin/ccclang++
>> >> >> >>>> -fno-common
>> >> >> >>>> -fPIC
>> >> >> >>>> -fvisibility-inlines-hidden -Werror=date-time
>> >> >> >>>> -Werror=unguarded-availability-new -std=c++11 -Wall -W
>> >> >> >>>> -Wno-unused-parameter
>> >> >> >>>> -Wwrite-strings -Wcast-qual -Wmissing-field-initializers
>> >> >> >>>> -pedantic
>> >> >> >>>> -Wno-long-long -Wcovered-switch-default -Wnon-virtual-dtor
>> >> >> >>>> -Wdelete-non-virtual-dtor -Wstring-conversion -O3
>> >> >> >>>> -Wl,-search_paths_first
>> >> >> >>>> -Wl,-headerpad_max_install_names  -L/sw/lib  -Wl,-dead_strip
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/AsmMatcherEmitter.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/AsmWriterEmitter.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/AsmWriterInst.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/Attributes.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/CallingConvEmitter.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/CodeEmitterGen.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/CodeGenDAGPatterns.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/CodeGenHwModes.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/CodeGenInstruction.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/CodeGenMapTable.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/CodeGenRegisters.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/CodeGenSchedule.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/CodeGenTarget.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/DAGISelEmitter.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/DAGISelMatcherEmitter.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/DAGISelMatcherGen.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/DAGISelMatcherOpt.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/DAGISelMatcher.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/DFAPacketizerEmitter.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/DisassemblerEmitter.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/FastISelEmitter.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/FixedLenDecoderEmitter.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/GlobalISelEmitter.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/InfoByHwMode.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/InstrInfoEmitter.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/IntrinsicEmitter.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/OptParserEmitter.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/PseudoLoweringEmitter.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/RegisterBankEmitter.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/RegisterInfoEmitter.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/SearchableTableEmitter.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/SubtargetEmitter.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/SubtargetFeatureInfo.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/TableGen.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/Types.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/X86DisassemblerTables.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/X86EVEX2VEXTablesEmitter.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/X86FoldTablesEmitter.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/X86ModRMFilters.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/X86RecognizableInstr.cpp.o
>> >> >> >>>> CMakeFiles/obj.llvm-tblgen.dir/CTagsEmitter.cpp.o  -o
>> >> >> >>>> ../../bin/llvm-tblgen
>> >> >> >>>> -Wl,-rpath, at loader_path/../lib ../../lib/libLLVMSupport.a
>> >> >> >>>> ../../lib/libLLVMTableGen.a ../../lib/libLLVMSupport.a -lcurses
>> >> >> >>>> -lz
>> >> >> >>>> -lm
>> >> >> >>>> ../../lib/libLLVMDemangle.a
>> >> >> >>>> Undefined symbols for architecture x86_64:
>> >> >> >>>>   "llvm::Record::dump() const", referenced from:
>> >> >> >>>>       llvm::getValueTypeByHwMode(llvm::Record*,
>> >> >> >>>> llvm::CodeGenHwModes
>> >> >> >>>> const&) in InfoByHwMode.cpp.o
>> >> >> >>>>   "llvm::SubtargetFeatureInfo::dump() const", referenced from:
>> >> >> >>>>       (anonymous namespace)::AsmMatcherInfo::buildInfo() in
>> >> >> >>>> AsmMatcherEmitter.cpp.o
>> >> >> >>>>   "(anonymous namespace)::MatchableInfo::dump() const",
>> >> >> >>>> referenced
>> >> >> >>>> from:
>> >> >> >>>>       (anonymous
>> >> >> >>>> namespace)::AsmMatcherEmitter::run(llvm::raw_ostream&)
>> >> >> >>>> in AsmMatcherEmitter.cpp.o
>> >> >> >>>> ld: symbol(s) not found for architecture x86_64
>> >> >> >>>> clang: error: linker command failed with exit code 1 (use -v to
>> >> >> >>>> see
>> >> >> >>>> invocation)
>> >> >> >>>> make[2]: *** [bin/llvm-tblgen] Error 1
>> >> >> >>>> make[1]: *** [utils/TableGen/CMakeFiles/llvm-tblgen.dir/all]
>> >> >> >>>> Error
>> >> >> >>>> 2
>> >> >> >>>> make: *** [all] Error 2
>> >> >> >>>>
>> >> >> >>>> This is on x86_64-apple-darwin16 with Xcode 9.0.
>> >> >> >>>>          Jack
>> >> >> >>>>
>> >> >> >>>> _______________________________________________
>> >> >> >>>> LLVM Developers mailing list
>> >> >> >>>> llvm-dev at lists.llvm.org
>> >> >> >>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>> >> >> >>>>
>> >> >> >>>
>> >> >> >>
>> >> >> >
>> >> >> >
>> >> >> > _______________________________________________
>> >> >> > LLVM Developers mailing list
>> >> >> > llvm-dev at lists.llvm.org
>> >> >> > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>> >> >> >
>> >> >
>> >> >
>> >
>> >
>
>

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